diff options
Diffstat (limited to 'lib/src/main/java/com/trilead')
115 files changed, 18727 insertions, 18727 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/ChannelCondition.java b/lib/src/main/java/com/trilead/ssh2/ChannelCondition.java index f3a0755..df1ad50 100644 --- a/lib/src/main/java/com/trilead/ssh2/ChannelCondition.java +++ b/lib/src/main/java/com/trilead/ssh2/ChannelCondition.java @@ -1,61 +1,61 @@ -
-package com.trilead.ssh2;
-
-/**
- * Contains constants that can be used to specify what conditions to wait for on
- * a SSH-2 channel (e.g., represented by a {@link Session}).
- *
- * @see Session#waitForCondition(int, long)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelCondition.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public abstract interface ChannelCondition
-{
- /**
- * A timeout has occurred, none of your requested conditions is fulfilled.
- * However, other conditions may be true - therefore, NEVER use the "=="
- * operator to test for this (or any other) condition. Always use
- * something like <code>((cond & ChannelCondition.CLOSED) != 0)</code>.
- */
- public static final int TIMEOUT = 1;
-
- /**
- * The underlying SSH-2 channel, however not necessarily the whole connection,
- * has been closed. This implies <code>EOF</code>. Note that there may still
- * be unread stdout or stderr data in the local window, i.e, <code>STDOUT_DATA</code>
- * or/and <code>STDERR_DATA</code> may be set at the same time.
- */
- public static final int CLOSED = 2;
-
- /**
- * There is stdout data available that is ready to be consumed.
- */
- public static final int STDOUT_DATA = 4;
-
- /**
- * There is stderr data available that is ready to be consumed.
- */
- public static final int STDERR_DATA = 8;
-
- /**
- * EOF on has been reached, no more _new_ stdout or stderr data will arrive
- * from the remote server. However, there may be unread stdout or stderr
- * data, i.e, <code>STDOUT_DATA</code> or/and <code>STDERR_DATA</code>
- * may be set at the same time.
- */
- public static final int EOF = 16;
-
- /**
- * The exit status of the remote process is available.
- * Some servers never send the exist status, or occasionally "forget" to do so.
- */
- public static final int EXIT_STATUS = 32;
-
- /**
- * The exit signal of the remote process is available.
- */
- public static final int EXIT_SIGNAL = 64;
-
-}
+ +package com.trilead.ssh2; + +/** + * Contains constants that can be used to specify what conditions to wait for on + * a SSH-2 channel (e.g., represented by a {@link Session}). + * + * @see Session#waitForCondition(int, long) + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ChannelCondition.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public abstract interface ChannelCondition +{ + /** + * A timeout has occurred, none of your requested conditions is fulfilled. + * However, other conditions may be true - therefore, NEVER use the "==" + * operator to test for this (or any other) condition. Always use + * something like <code>((cond & ChannelCondition.CLOSED) != 0)</code>. + */ + public static final int TIMEOUT = 1; + + /** + * The underlying SSH-2 channel, however not necessarily the whole connection, + * has been closed. This implies <code>EOF</code>. Note that there may still + * be unread stdout or stderr data in the local window, i.e, <code>STDOUT_DATA</code> + * or/and <code>STDERR_DATA</code> may be set at the same time. + */ + public static final int CLOSED = 2; + + /** + * There is stdout data available that is ready to be consumed. + */ + public static final int STDOUT_DATA = 4; + + /** + * There is stderr data available that is ready to be consumed. + */ + public static final int STDERR_DATA = 8; + + /** + * EOF on has been reached, no more _new_ stdout or stderr data will arrive + * from the remote server. However, there may be unread stdout or stderr + * data, i.e, <code>STDOUT_DATA</code> or/and <code>STDERR_DATA</code> + * may be set at the same time. + */ + public static final int EOF = 16; + + /** + * The exit status of the remote process is available. + * Some servers never send the exist status, or occasionally "forget" to do so. + */ + public static final int EXIT_STATUS = 32; + + /** + * The exit signal of the remote process is available. + */ + public static final int EXIT_SIGNAL = 64; + +} diff --git a/lib/src/main/java/com/trilead/ssh2/Connection.java b/lib/src/main/java/com/trilead/ssh2/Connection.java index c1e8711..163fdb5 100644 --- a/lib/src/main/java/com/trilead/ssh2/Connection.java +++ b/lib/src/main/java/com/trilead/ssh2/Connection.java @@ -1,1628 +1,1628 @@ -
-package com.trilead.ssh2;
-
-import java.io.CharArrayWriter;
-import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.SocketTimeoutException;
-import java.security.KeyPair;
-import java.security.SecureRandom;
-import java.security.Security;
-import java.util.Set;
-import java.util.Vector;
-
-import com.trilead.ssh2.auth.AuthenticationManager;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketIgnore;
-import com.trilead.ssh2.transport.KexManager;
-import com.trilead.ssh2.transport.TransportManager;
-import com.trilead.ssh2.util.TimeoutService;
-import com.trilead.ssh2.util.TimeoutService.TimeoutToken;
-
-/**
- * A <code>Connection</code> is used to establish an encrypted TCP/IP
- * connection to a SSH-2 server.
- * <p>
- * Typically, one
- * <ol>
- * <li>creates a {@link #Connection(String) Connection} object.</li>
- * <li>calls the {@link #connect() connect()} method.</li>
- * <li>calls some of the authentication methods (e.g.,
- * {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()}).</li>
- * <li>calls one or several times the {@link #openSession() openSession()}
- * method.</li>
- * <li>finally, one must close the connection and release resources with the
- * {@link #close() close()} method.</li>
- * </ol>
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Connection.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class Connection
-{
- /**
- * The identifier presented to the SSH-2 server.
- */
- public final static String identification = "TrileadSSH2Java_213";
-
- /**
- * Will be used to generate all random data needed for the current
- * connection. Note: SecureRandom.nextBytes() is thread safe.
- */
- private SecureRandom generator;
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @return The list of supported cipher algorithms by this implementation.
- */
- public static synchronized String[] getAvailableCiphers()
- {
- return BlockCipherFactory.getDefaultCipherList();
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @return The list of supported MAC algorthims by this implementation.
- */
- public static synchronized String[] getAvailableMACs()
- {
- return MAC.getMacList();
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @return The list of supported server host key algorthims by this
- * implementation.
- */
- public static synchronized String[] getAvailableServerHostKeyAlgorithms()
- {
- return KexManager.getDefaultServerHostkeyAlgorithmList();
- }
-
- private AuthenticationManager am;
-
- private boolean authenticated = false;
- private boolean compression = false;
- private ChannelManager cm;
-
- private CryptoWishList cryptoWishList = new CryptoWishList();
-
- private DHGexParameters dhgexpara = new DHGexParameters();
-
- private final String hostname;
-
- private final int port;
-
- private TransportManager tm;
-
- private boolean tcpNoDelay = false;
-
- private ProxyData proxyData = null;
-
- private Vector<ConnectionMonitor> connectionMonitors = new Vector<ConnectionMonitor>();
-
- /**
- * Prepares a fresh <code>Connection</code> object which can then be used
- * to establish a connection to the specified SSH-2 server.
- * <p>
- * Same as {@link #Connection(String, int) Connection(hostname, 22)}.
- *
- * @param hostname
- * the hostname of the SSH-2 server.
- */
- public Connection(String hostname)
- {
- this(hostname, 22);
- }
-
- /**
- * Prepares a fresh <code>Connection</code> object which can then be used
- * to establish a connection to the specified SSH-2 server.
- *
- * @param hostname
- * the host where we later want to connect to.
- * @param port
- * port on the server, normally 22.
- */
- public Connection(String hostname, int port)
- {
- this.hostname = hostname;
- this.port = port;
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. This method
- * is based on DSA (it uses DSA to sign a challenge sent by the server).
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If the server does not accept the request (or if further
- * authentication steps are needed), <code>false</code> is returned and
- * one can retry either by using this or any other authentication method
- * (use the <code>getRemainingAuthMethods</code> method to get a list of
- * the remaining possible methods).
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param pem
- * A <code>String</code> containing the DSA private key of the
- * user in OpenSSH key format (PEM, you can't miss the
- * "-----BEGIN DSA PRIVATE KEY-----" tag). The string may contain
- * linefeeds.
- * @param password
- * If the PEM string is 3DES encrypted ("DES-EDE3-CBC"), then you
- * must specify the password. Otherwise, this argument will be
- * ignored and can be set to <code>null</code>.
- *
- * @return whether the connection is now authenticated.
- * @throws IOException
- *
- * @deprecated You should use one of the
- * {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()}
- * methods, this method is just a wrapper for it and will
- * disappear in future builds.
- *
- */
- public synchronized boolean authenticateWithDSA(String user, String pem, String password) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- if (pem == null)
- throw new IllegalArgumentException("pem argument is null");
-
- authenticated = am.authenticatePublicKey(user, pem.toCharArray(), password, getOrCreateSecureRND());
-
- return authenticated;
- }
-
- /**
- * A wrapper that calls
- * {@link #authenticateWithKeyboardInteractive(String, String[], InteractiveCallback)
- * authenticateWithKeyboardInteractivewith} a <code>null</code> submethod
- * list.
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param cb
- * An <code>InteractiveCallback</code> which will be used to
- * determine the responses to the questions asked by the server.
- * @return whether the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithKeyboardInteractive(String user, InteractiveCallback cb)
- throws IOException
- {
- return authenticateWithKeyboardInteractive(user, null, cb);
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. This method
- * is based on "keyboard-interactive", specified in
- * draft-ietf-secsh-auth-kbdinteract-XX. Basically, you have to define a
- * callback object which will be feeded with challenges generated by the
- * server. Answers are then sent back to the server. It is possible that the
- * callback will be called several times during the invocation of this
- * method (e.g., if the server replies to the callback's answer(s) with
- * another challenge...)
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If the server does not accept the request (or if further
- * authentication steps are needed), <code>false</code> is returned and
- * one can retry either by using this or any other authentication method
- * (use the <code>getRemainingAuthMethods</code> method to get a list of
- * the remaining possible methods).
- * <p>
- * Note: some SSH servers advertise "keyboard-interactive", however, any
- * interactive request will be denied (without having sent any challenge to
- * the client).
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param submethods
- * An array of submethod names, see
- * draft-ietf-secsh-auth-kbdinteract-XX. May be <code>null</code>
- * to indicate an empty list.
- * @param cb
- * An <code>InteractiveCallback</code> which will be used to
- * determine the responses to the questions asked by the server.
- *
- * @return whether the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithKeyboardInteractive(String user, String[] submethods,
- InteractiveCallback cb) throws IOException
- {
- if (cb == null)
- throw new IllegalArgumentException("Callback may not ne NULL!");
-
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- authenticated = am.authenticateInteractive(user, submethods, cb);
-
- return authenticated;
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. This method
- * sends username and password to the server.
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If the server does not accept the request (or if further
- * authentication steps are needed), <code>false</code> is returned and
- * one can retry either by using this or any other authentication method
- * (use the <code>getRemainingAuthMethods</code> method to get a list of
- * the remaining possible methods).
- * <p>
- * Note: if this method fails, then please double-check that it is actually
- * offered by the server (use
- * {@link #getRemainingAuthMethods(String) getRemainingAuthMethods()}.
- * <p>
- * Often, password authentication is disabled, but users are not aware of
- * it. Many servers only offer "publickey" and "keyboard-interactive".
- * However, even though "keyboard-interactive" *feels* like password
- * authentication (e.g., when using the putty or openssh clients) it is
- * *not* the same mechanism.
- *
- * @param user
- * @param password
- * @return if the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithPassword(String user, String password) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- if (password == null)
- throw new IllegalArgumentException("password argument is null");
-
- authenticated = am.authenticatePassword(user, password);
-
- return authenticated;
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. This method
- * can be used to explicitly use the special "none" authentication method
- * (where only a username has to be specified).
- * <p>
- * Note 1: The "none" method may always be tried by clients, however as by
- * the specs, the server will not explicitly announce it. In other words,
- * the "none" token will never show up in the list returned by
- * {@link #getRemainingAuthMethods(String)}.
- * <p>
- * Note 2: no matter which one of the authenticateWithXXX() methods you
- * call, the library will always issue exactly one initial "none"
- * authentication request to retrieve the initially allowed list of
- * authentication methods by the server. Please read RFC 4252 for the
- * details.
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If further authentication steps are needed, <code>false</code>
- * is returned and one can retry by any other authentication method (use the
- * <code>getRemainingAuthMethods</code> method to get a list of the
- * remaining possible methods).
- *
- * @param user
- * @return if the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithNone(String user) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- /* Trigger the sending of the PacketUserauthRequestNone packet */
- /* (if not already done) */
-
- authenticated = am.authenticateNone(user);
-
- return authenticated;
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. The
- * authentication method "publickey" works by signing a challenge sent by
- * the server. The signature is either DSA or RSA based - it just depends on
- * the type of private key you specify, either a DSA or RSA private key in
- * PEM format. And yes, this is may seem to be a little confusing, the
- * method is called "publickey" in the SSH-2 protocol specification, however
- * since we need to generate a signature, you actually have to supply a
- * private key =).
- * <p>
- * The private key contained in the PEM file may also be encrypted
- * ("Proc-Type: 4,ENCRYPTED"). The library supports DES-CBC and DES-EDE3-CBC
- * encryption, as well as the more exotic PEM encrpytions AES-128-CBC,
- * AES-192-CBC and AES-256-CBC.
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If the server does not accept the request (or if further
- * authentication steps are needed), <code>false</code> is returned and
- * one can retry either by using this or any other authentication method
- * (use the <code>getRemainingAuthMethods</code> method to get a list of
- * the remaining possible methods).
- * <p>
- * NOTE PUTTY USERS: Event though your key file may start with
- * "-----BEGIN..." it is not in the expected format. You have to convert it
- * to the OpenSSH key format by using the "puttygen" tool (can be downloaded
- * from the Putty website). Simply load your key and then use the
- * "Conversions/Export OpenSSH key" functionality to get a proper PEM file.
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param pemPrivateKey
- * A <code>char[]</code> containing a DSA or RSA private key of
- * the user in OpenSSH key format (PEM, you can't miss the
- * "-----BEGIN DSA PRIVATE KEY-----" or "-----BEGIN RSA PRIVATE
- * KEY-----" tag). The char array may contain
- * linebreaks/linefeeds.
- * @param password
- * If the PEM structure is encrypted ("Proc-Type: 4,ENCRYPTED")
- * then you must specify a password. Otherwise, this argument
- * will be ignored and can be set to <code>null</code>.
- *
- * @return whether the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithPublicKey(String user, char[] pemPrivateKey, String password)
- throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- if (pemPrivateKey == null)
- throw new IllegalArgumentException("pemPrivateKey argument is null");
-
- authenticated = am.authenticatePublicKey(user, pemPrivateKey, password, getOrCreateSecureRND());
-
- return authenticated;
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. The
- * authentication method "publickey" works by signing a challenge sent by
- * the server. The signature is either DSA or RSA based - it just depends on
- * the type of private key you specify, either a DSA or RSA private key in
- * PEM format. And yes, this is may seem to be a little confusing, the
- * method is called "publickey" in the SSH-2 protocol specification, however
- * since we need to generate a signature, you actually have to supply a
- * private key =).
- * <p>
- * If the authentication phase is complete, <code>true</code> will be
- * returned. If the server does not accept the request (or if further
- * authentication steps are needed), <code>false</code> is returned and
- * one can retry either by using this or any other authentication method
- * (use the <code>getRemainingAuthMethods</code> method to get a list of
- * the remaining possible methods).
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param key
- * A <code>RSAPrivateKey</code> or <code>DSAPrivateKey</code>
- * containing a DSA or RSA private key of
- * the user in Trilead object format.
- *
- * @return whether the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithPublicKey(String user, KeyPair pair)
- throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- if (user == null)
- throw new IllegalArgumentException("user argument is null");
-
- if (pair == null)
- throw new IllegalArgumentException("Key pair argument is null");
-
- authenticated = am.authenticatePublicKey(user, pair, getOrCreateSecureRND());
-
- return authenticated;
- }
- /**
- * A convenience wrapper function which reads in a private key (PEM format,
- * either DSA or RSA) and then calls
- * <code>authenticateWithPublicKey(String, char[], String)</code>.
- * <p>
- * NOTE PUTTY USERS: Event though your key file may start with
- * "-----BEGIN..." it is not in the expected format. You have to convert it
- * to the OpenSSH key format by using the "puttygen" tool (can be downloaded
- * from the Putty website). Simply load your key and then use the
- * "Conversions/Export OpenSSH key" functionality to get a proper PEM file.
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param pemFile
- * A <code>File</code> object pointing to a file containing a
- * DSA or RSA private key of the user in OpenSSH key format (PEM,
- * you can't miss the "-----BEGIN DSA PRIVATE KEY-----" or
- * "-----BEGIN RSA PRIVATE KEY-----" tag).
- * @param password
- * If the PEM file is encrypted then you must specify the
- * password. Otherwise, this argument will be ignored and can be
- * set to <code>null</code>.
- *
- * @return whether the connection is now authenticated.
- * @throws IOException
- */
- public synchronized boolean authenticateWithPublicKey(String user, File pemFile, String password)
- throws IOException
- {
- if (pemFile == null)
- throw new IllegalArgumentException("pemFile argument is null");
-
- char[] buff = new char[256];
-
- CharArrayWriter cw = new CharArrayWriter();
-
- FileReader fr = new FileReader(pemFile);
-
- while (true)
- {
- int len = fr.read(buff);
- if (len < 0)
- break;
- cw.write(buff, 0, len);
- }
-
- fr.close();
-
- return authenticateWithPublicKey(user, cw.toCharArray(), password);
- }
-
- /**
- * Add a {@link ConnectionMonitor} to this connection. Can be invoked at any
- * time, but it is best to add connection monitors before invoking
- * <code>connect()</code> to avoid glitches (e.g., you add a connection
- * monitor after a successful connect(), but the connection has died in the
- * mean time. Then, your connection monitor won't be notified.)
- * <p>
- * You can add as many monitors as you like.
- *
- * @see ConnectionMonitor
- *
- * @param cmon
- * An object implementing the <code>ConnectionMonitor</code>
- * interface.
- */
- public synchronized void addConnectionMonitor(ConnectionMonitor cmon)
- {
- if (cmon == null)
- throw new IllegalArgumentException("cmon argument is null");
-
- connectionMonitors.addElement(cmon);
-
- if (tm != null)
- tm.setConnectionMonitors(connectionMonitors);
- }
-
- /**
- * Controls whether compression is used on the link or not.
- * <p>
- * Note: This can only be called before connect()
- * @param enabled whether to enable compression
- * @throws IOException
- */
- public synchronized void setCompression(boolean enabled) throws IOException {
- if (tm != null)
- throw new IOException("Connection to " + hostname + " is already in connected state!");
-
- compression = enabled;
- }
-
- /**
- * Close the connection to the SSH-2 server. All assigned sessions will be
- * closed, too. Can be called at any time. Don't forget to call this once
- * you don't need a connection anymore - otherwise the receiver thread may
- * run forever.
- */
- public synchronized void close()
- {
- Throwable t = new Throwable("Closed due to user request.");
- close(t, false);
- }
-
- private void close(Throwable t, boolean hard)
- {
- if (cm != null)
- cm.closeAllChannels();
-
- if (tm != null)
- {
- tm.close(t, hard == false);
- tm = null;
- }
- am = null;
- cm = null;
- authenticated = false;
- }
-
- /**
- * Same as
- * {@link #connect(ServerHostKeyVerifier, int, int) connect(null, 0, 0)}.
- *
- * @return see comments for the
- * {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)}
- * method.
- * @throws IOException
- */
- public synchronized ConnectionInfo connect() throws IOException
- {
- return connect(null, 0, 0);
- }
-
- /**
- * Same as
- * {@link #connect(ServerHostKeyVerifier, int, int) connect(verifier, 0, 0)}.
- *
- * @return see comments for the
- * {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)}
- * method.
- * @throws IOException
- */
- public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier) throws IOException
- {
- return connect(verifier, 0, 0);
- }
-
- /**
- * Connect to the SSH-2 server and, as soon as the server has presented its
- * host key, use the
- * {@link ServerHostKeyVerifier#verifyServerHostKey(String, int, String,
- * byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method of the
- * <code>verifier</code> to ask for permission to proceed. If
- * <code>verifier</code> is <code>null</code>, then any host key will
- * be accepted - this is NOT recommended, since it makes man-in-the-middle
- * attackes VERY easy (somebody could put a proxy SSH server between you and
- * the real server).
- * <p>
- * Note: The verifier will be called before doing any crypto calculations
- * (i.e., diffie-hellman). Therefore, if you don't like the presented host
- * key then no CPU cycles are wasted (and the evil server has less
- * information about us).
- * <p>
- * However, it is still possible that the server presented a fake host key:
- * the server cheated (typically a sign for a man-in-the-middle attack) and
- * is not able to generate a signature that matches its host key. Don't
- * worry, the library will detect such a scenario later when checking the
- * signature (the signature cannot be checked before having completed the
- * diffie-hellman exchange).
- * <p>
- * Note 2: The {@link ServerHostKeyVerifier#verifyServerHostKey(String, int,
- * String, byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method will
- * *NOT* be called from the current thread, the call is being made from a
- * background thread (there is a background dispatcher thread for every
- * established connection).
- * <p>
- * Note 3: This method will block as long as the key exchange of the
- * underlying connection has not been completed (and you have not specified
- * any timeouts).
- * <p>
- * Note 4: If you want to re-use a connection object that was successfully
- * connected, then you must call the {@link #close()} method before invoking
- * <code>connect()</code> again.
- *
- * @param verifier
- * An object that implements the {@link ServerHostKeyVerifier}
- * interface. Pass <code>null</code> to accept any server host
- * key - NOT recommended.
- *
- * @param connectTimeout
- * Connect the underlying TCP socket to the server with the given
- * timeout value (non-negative, in milliseconds). Zero means no
- * timeout. If a proxy is being used (see
- * {@link #setProxyData(ProxyData)}), then this timeout is used
- * for the connection establishment to the proxy.
- *
- * @param kexTimeout
- * Timeout for complete connection establishment (non-negative,
- * in milliseconds). Zero means no timeout. The timeout counts
- * from the moment you invoke the connect() method and is
- * cancelled as soon as the first key-exchange round has
- * finished. It is possible that the timeout event will be fired
- * during the invocation of the <code>verifier</code> callback,
- * but it will only have an effect after the
- * <code>verifier</code> returns.
- *
- * @return A {@link ConnectionInfo} object containing the details of the
- * established connection.
- *
- * @throws IOException
- * If any problem occurs, e.g., the server's host key is not
- * accepted by the <code>verifier</code> or there is problem
- * during the initial crypto setup (e.g., the signature sent by
- * the server is wrong).
- * <p>
- * In case of a timeout (either connectTimeout or kexTimeout) a
- * SocketTimeoutException is thrown.
- * <p>
- * An exception may also be thrown if the connection was already
- * successfully connected (no matter if the connection broke in
- * the mean time) and you invoke <code>connect()</code> again
- * without having called {@link #close()} first.
- * <p>
- * If a HTTP proxy is being used and the proxy refuses the
- * connection, then a {@link HTTPProxyException} may be thrown,
- * which contains the details returned by the proxy. If the
- * proxy is buggy and does not return a proper HTTP response,
- * then a normal IOException is thrown instead.
- */
- public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier, int connectTimeout, int kexTimeout)
- throws IOException
- {
- final class TimeoutState
- {
- boolean isCancelled = false;
- boolean timeoutSocketClosed = false;
- }
-
- if (tm != null)
- throw new IOException("Connection to " + hostname + " is already in connected state!");
-
- if (connectTimeout < 0)
- throw new IllegalArgumentException("connectTimeout must be non-negative!");
-
- if (kexTimeout < 0)
- throw new IllegalArgumentException("kexTimeout must be non-negative!");
-
- final TimeoutState state = new TimeoutState();
-
- tm = new TransportManager(hostname, port);
-
- tm.setConnectionMonitors(connectionMonitors);
-
- // Don't offer compression if not requested
- if (!compression) {
- cryptoWishList.c2s_comp_algos = new String[] { "none" };
- cryptoWishList.s2c_comp_algos = new String[] { "none" };
- }
-
- /*
- * Make sure that the runnable below will observe the new value of "tm"
- * and "state" (the runnable will be executed in a different thread,
- * which may be already running, that is why we need a memory barrier
- * here). See also the comment in Channel.java if you are interested in
- * the details.
- *
- * OKOK, this is paranoid since adding the runnable to the todo list of
- * the TimeoutService will ensure that all writes have been flushed
- * before the Runnable reads anything (there is a synchronized block in
- * TimeoutService.addTimeoutHandler).
- */
-
- synchronized (tm)
- {
- /* We could actually synchronize on anything. */
- }
-
- try
- {
- TimeoutToken token = null;
-
- if (kexTimeout > 0)
- {
- final Runnable timeoutHandler = new Runnable()
- {
- public void run()
- {
- synchronized (state)
- {
- if (state.isCancelled)
- return;
- state.timeoutSocketClosed = true;
- tm.close(new SocketTimeoutException("The connect timeout expired"), false);
- }
- }
- };
-
- long timeoutHorizont = System.currentTimeMillis() + kexTimeout;
-
- token = TimeoutService.addTimeoutHandler(timeoutHorizont, timeoutHandler);
- }
-
- try
- {
- tm.initialize(cryptoWishList, verifier, dhgexpara, connectTimeout, getOrCreateSecureRND(), proxyData);
- }
- catch (SocketTimeoutException se)
- {
- throw (SocketTimeoutException) new SocketTimeoutException(
- "The connect() operation on the socket timed out.").initCause(se);
- }
-
- tm.setTcpNoDelay(tcpNoDelay);
-
- /* Wait until first KEX has finished */
-
- ConnectionInfo ci = tm.getConnectionInfo(1);
-
- /* Now try to cancel the timeout, if needed */
-
- if (token != null)
- {
- TimeoutService.cancelTimeoutHandler(token);
-
- /* Were we too late? */
-
- synchronized (state)
- {
- if (state.timeoutSocketClosed)
- throw new IOException("This exception will be replaced by the one below =)");
- /*
- * Just in case the "cancelTimeoutHandler" invocation came
- * just a little bit too late but the handler did not enter
- * the semaphore yet - we can still stop it.
- */
- state.isCancelled = true;
- }
- }
-
- return ci;
- }
- catch (SocketTimeoutException ste)
- {
- throw ste;
- }
- catch (IOException e1)
- {
- /* This will also invoke any registered connection monitors */
- close(new Throwable("There was a problem during connect."), false);
-
- synchronized (state)
- {
- /*
- * Show a clean exception, not something like "the socket is
- * closed!?!"
- */
- if (state.timeoutSocketClosed)
- throw new SocketTimeoutException("The kexTimeout (" + kexTimeout + " ms) expired.");
- }
-
- /* Do not wrap a HTTPProxyException */
- if (e1 instanceof HTTPProxyException)
- throw e1;
-
- throw (IOException) new IOException("There was a problem while connecting to " + hostname + ":" + port)
- .initCause(e1);
- }
- }
-
- /**
- * Creates a new {@link LocalPortForwarder}. A
- * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive
- * at a local port via the secure tunnel to another host (which may or may
- * not be identical to the remote SSH-2 server).
- * <p>
- * This method must only be called after one has passed successfully the
- * authentication step. There is no limit on the number of concurrent
- * forwardings.
- *
- * @param local_port
- * the local port the LocalPortForwarder shall bind to.
- * @param host_to_connect
- * target address (IP or hostname)
- * @param port_to_connect
- * target port
- * @return A {@link LocalPortForwarder} object.
- * @throws IOException
- */
- public synchronized LocalPortForwarder createLocalPortForwarder(int local_port, String host_to_connect,
- int port_to_connect) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
- return new LocalPortForwarder(cm, local_port, host_to_connect, port_to_connect);
- }
-
- /**
- * Creates a new {@link LocalPortForwarder}. A
- * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive
- * at a local port via the secure tunnel to another host (which may or may
- * not be identical to the remote SSH-2 server).
- * <p>
- * This method must only be called after one has passed successfully the
- * authentication step. There is no limit on the number of concurrent
- * forwardings.
- *
- * @param addr
- * specifies the InetSocketAddress where the local socket shall
- * be bound to.
- * @param host_to_connect
- * target address (IP or hostname)
- * @param port_to_connect
- * target port
- * @return A {@link LocalPortForwarder} object.
- * @throws IOException
- */
- public synchronized LocalPortForwarder createLocalPortForwarder(InetSocketAddress addr, String host_to_connect,
- int port_to_connect) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
- return new LocalPortForwarder(cm, addr, host_to_connect, port_to_connect);
- }
-
- /**
- * Creates a new {@link LocalStreamForwarder}. A
- * <code>LocalStreamForwarder</code> manages an Input/Outputstream pair
- * that is being forwarded via the secure tunnel into a TCP/IP connection to
- * another host (which may or may not be identical to the remote SSH-2
- * server).
- *
- * @param host_to_connect
- * @param port_to_connect
- * @return A {@link LocalStreamForwarder} object.
- * @throws IOException
- */
- public synchronized LocalStreamForwarder createLocalStreamForwarder(String host_to_connect, int port_to_connect)
- throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot forward, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot forward, connection is not authenticated.");
-
- return new LocalStreamForwarder(cm, host_to_connect, port_to_connect);
- }
-
- /**
- * Creates a new {@link DynamicPortForwarder}. A
- * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive
- * at a local port via the secure tunnel to another host that is chosen via
- * the SOCKS protocol.
- * <p>
- * This method must only be called after one has passed successfully the
- * authentication step. There is no limit on the number of concurrent
- * forwardings.
- *
- * @param local_port
- * @return A {@link DynamicPortForwarder} object.
- * @throws IOException
- */
- public synchronized DynamicPortForwarder createDynamicPortForwarder(int local_port) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
- return new DynamicPortForwarder(cm, local_port);
- }
-
- /**
- * Creates a new {@link DynamicPortForwarder}. A
- * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive
- * at a local port via the secure tunnel to another host that is chosen via
- * the SOCKS protocol.
- * <p>
- * This method must only be called after one has passed successfully the
- * authentication step. There is no limit on the number of concurrent
- * forwardings.
- *
- * @param addr
- * specifies the InetSocketAddress where the local socket shall
- * be bound to.
- * @return A {@link DynamicPortForwarder} object.
- * @throws IOException
- */
- public synchronized DynamicPortForwarder createDynamicPortForwarder(InetSocketAddress addr) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
- return new DynamicPortForwarder(cm, addr);
- }
-
- /**
- * Create a very basic {@link SCPClient} that can be used to copy files
- * from/to the SSH-2 server.
- * <p>
- * Works only after one has passed successfully the authentication step.
- * There is no limit on the number of concurrent SCP clients.
- * <p>
- * Note: This factory method will probably disappear in the future.
- *
- * @return A {@link SCPClient} object.
- * @throws IOException
- */
- public synchronized SCPClient createSCPClient() throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot create SCP client, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot create SCP client, connection is not authenticated.");
-
- return new SCPClient(this);
- }
-
- /**
- * Force an asynchronous key re-exchange (the call does not block). The
- * latest values set for MAC, Cipher and DH group exchange parameters will
- * be used. If a key exchange is currently in progress, then this method has
- * the only effect that the so far specified parameters will be used for the
- * next (server driven) key exchange.
- * <p>
- * Note: This implementation will never start a key exchange (other than the
- * initial one) unless you or the SSH-2 server ask for it.
- *
- * @throws IOException
- * In case of any failure behind the scenes.
- */
- public synchronized void forceKeyExchange() throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("You need to establish a connection first.");
-
- tm.forceKeyExchange(cryptoWishList, dhgexpara);
- }
-
- /**
- * Returns the hostname that was passed to the constructor.
- *
- * @return the hostname
- */
- public synchronized String getHostname()
- {
- return hostname;
- }
-
- /**
- * Returns the port that was passed to the constructor.
- *
- * @return the TCP port
- */
- public synchronized int getPort()
- {
- return port;
- }
-
- /**
- * Returns a {@link ConnectionInfo} object containing the details of the
- * connection. Can be called as soon as the connection has been established
- * (successfully connected).
- *
- * @return A {@link ConnectionInfo} object.
- * @throws IOException
- * In case of any failure behind the scenes.
- */
- public synchronized ConnectionInfo getConnectionInfo() throws IOException
- {
- if (tm == null)
- throw new IllegalStateException(
- "Cannot get details of connection, you need to establish a connection first.");
- return tm.getConnectionInfo(1);
- }
-
- /**
- * After a successful connect, one has to authenticate oneself. This method
- * can be used to tell which authentication methods are supported by the
- * server at a certain stage of the authentication process (for the given
- * username).
- * <p>
- * Note 1: the username will only be used if no authentication step was done
- * so far (it will be used to ask the server for a list of possible
- * authentication methods by sending the initial "none" request). Otherwise,
- * this method ignores the user name and returns a cached method list (which
- * is based on the information contained in the last negative server
- * response).
- * <p>
- * Note 2: the server may return method names that are not supported by this
- * implementation.
- * <p>
- * After a successful authentication, this method must not be called
- * anymore.
- *
- * @param user
- * A <code>String</code> holding the username.
- *
- * @return a (possibly emtpy) array holding authentication method names.
- * @throws IOException
- */
- public synchronized String[] getRemainingAuthMethods(String user) throws IOException
- {
- if (user == null)
- throw new IllegalArgumentException("user argument may not be NULL!");
-
- if (tm == null)
- throw new IllegalStateException("Connection is not established!");
-
- if (authenticated)
- throw new IllegalStateException("Connection is already authenticated!");
-
- if (am == null)
- am = new AuthenticationManager(tm);
-
- if (cm == null)
- cm = new ChannelManager(tm);
-
- return am.getRemainingMethods(user);
- }
-
- /**
- * Determines if the authentication phase is complete. Can be called at any
- * time.
- *
- * @return <code>true</code> if no further authentication steps are
- * needed.
- */
- public synchronized boolean isAuthenticationComplete()
- {
- return authenticated;
- }
-
- /**
- * Returns true if there was at least one failed authentication request and
- * the last failed authentication request was marked with "partial success"
- * by the server. This is only needed in the rare case of SSH-2 server
- * setups that cannot be satisfied with a single successful authentication
- * request (i.e., multiple authentication steps are needed.)
- * <p>
- * If you are interested in the details, then have a look at RFC4252.
- *
- * @return if the there was a failed authentication step and the last one
- * was marked as a "partial success".
- */
- public synchronized boolean isAuthenticationPartialSuccess()
- {
- if (am == null)
- return false;
-
- return am.getPartialSuccess();
- }
-
- /**
- * Checks if a specified authentication method is available. This method is
- * actually just a wrapper for {@link #getRemainingAuthMethods(String)
- * getRemainingAuthMethods()}.
- *
- * @param user
- * A <code>String</code> holding the username.
- * @param method
- * An authentication method name (e.g., "publickey", "password",
- * "keyboard-interactive") as specified by the SSH-2 standard.
- * @return if the specified authentication method is currently available.
- * @throws IOException
- */
- public synchronized boolean isAuthMethodAvailable(String user, String method) throws IOException
- {
- if (method == null)
- throw new IllegalArgumentException("method argument may not be NULL!");
-
- String methods[] = getRemainingAuthMethods(user);
-
- for (int i = 0; i < methods.length; i++)
- {
- if (methods[i].compareTo(method) == 0)
- return true;
- }
-
- return false;
- }
-
- private final SecureRandom getOrCreateSecureRND()
- {
- if (generator == null)
- generator = new SecureRandom();
-
- return generator;
- }
-
- /**
- * Open a new {@link Session} on this connection. Works only after one has
- * passed successfully the authentication step. There is no limit on the
- * number of concurrent sessions.
- *
- * @return A {@link Session} object.
- * @throws IOException
- */
- public synchronized Session openSession() throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("Cannot open session, you need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("Cannot open session, connection is not authenticated.");
-
- return new Session(cm, getOrCreateSecureRND());
- }
-
- /**
- * Send an SSH_MSG_IGNORE packet. This method will generate a random data
- * attribute (length between 0 (invlusive) and 16 (exclusive) bytes,
- * contents are random bytes).
- * <p>
- * This method must only be called once the connection is established.
- *
- * @throws IOException
- */
- public synchronized void sendIgnorePacket() throws IOException
- {
- SecureRandom rnd = getOrCreateSecureRND();
-
- byte[] data = new byte[rnd.nextInt(16)];
- rnd.nextBytes(data);
-
- sendIgnorePacket(data);
- }
-
- /**
- * Send an SSH_MSG_IGNORE packet with the given data attribute.
- * <p>
- * This method must only be called once the connection is established.
- *
- * @throws IOException
- */
- public synchronized void sendIgnorePacket(byte[] data) throws IOException
- {
- if (data == null)
- throw new IllegalArgumentException("data argument must not be null.");
-
- if (tm == null)
- throw new IllegalStateException(
- "Cannot send SSH_MSG_IGNORE packet, you need to establish a connection first.");
-
- PacketIgnore pi = new PacketIgnore();
- pi.setData(data);
-
- tm.sendMessage(pi.getPayload());
- }
-
- /**
- * Removes duplicates from a String array, keeps only first occurence of
- * each element. Does not destroy order of elements; can handle nulls. Uses
- * a very efficient O(N^2) algorithm =)
- *
- * @param list
- * a String array.
- * @return a cleaned String array.
- */
- private String[] removeDuplicates(String[] list)
- {
- if ((list == null) || (list.length < 2))
- return list;
-
- String[] list2 = new String[list.length];
-
- int count = 0;
-
- for (int i = 0; i < list.length; i++)
- {
- boolean duplicate = false;
-
- String element = list[i];
-
- for (int j = 0; j < count; j++)
- {
- if (((element == null) && (list2[j] == null)) || ((element != null) && (element.equals(list2[j]))))
- {
- duplicate = true;
- break;
- }
- }
-
- if (duplicate)
- continue;
-
- list2[count++] = list[i];
- }
-
- if (count == list2.length)
- return list2;
-
- String[] tmp = new String[count];
- System.arraycopy(list2, 0, tmp, 0, count);
-
- return tmp;
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @param ciphers
- */
- public synchronized void setClient2ServerCiphers(String[] ciphers)
- {
- if ((ciphers == null) || (ciphers.length == 0))
- throw new IllegalArgumentException();
- ciphers = removeDuplicates(ciphers);
- BlockCipherFactory.checkCipherList(ciphers);
- cryptoWishList.c2s_enc_algos = ciphers;
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @param macs
- */
- public synchronized void setClient2ServerMACs(String[] macs)
- {
- if ((macs == null) || (macs.length == 0))
- throw new IllegalArgumentException();
- macs = removeDuplicates(macs);
- MAC.checkMacList(macs);
- cryptoWishList.c2s_mac_algos = macs;
- }
-
- /**
- * Sets the parameters for the diffie-hellman group exchange. Unless you
- * know what you are doing, you will never need this. Default values are
- * defined in the {@link DHGexParameters} class.
- *
- * @param dgp
- * {@link DHGexParameters}, non null.
- *
- */
- public synchronized void setDHGexParameters(DHGexParameters dgp)
- {
- if (dgp == null)
- throw new IllegalArgumentException();
-
- dhgexpara = dgp;
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @param ciphers
- */
- public synchronized void setServer2ClientCiphers(String[] ciphers)
- {
- if ((ciphers == null) || (ciphers.length == 0))
- throw new IllegalArgumentException();
- ciphers = removeDuplicates(ciphers);
- BlockCipherFactory.checkCipherList(ciphers);
- cryptoWishList.s2c_enc_algos = ciphers;
- }
-
- /**
- * Unless you know what you are doing, you will never need this.
- *
- * @param macs
- */
- public synchronized void setServer2ClientMACs(String[] macs)
- {
- if ((macs == null) || (macs.length == 0))
- throw new IllegalArgumentException();
-
- macs = removeDuplicates(macs);
- MAC.checkMacList(macs);
- cryptoWishList.s2c_mac_algos = macs;
- }
-
- /**
- * Define the set of allowed server host key algorithms to be used for the
- * following key exchange operations.
- * <p>
- * Unless you know what you are doing, you will never need this.
- *
- * @param algos
- * An array of allowed server host key algorithms. SSH-2 defines
- * <code>ssh-dss</code> and <code>ssh-rsa</code>. The
- * entries of the array must be ordered after preference, i.e.,
- * the entry at index 0 is the most preferred one. You must
- * specify at least one entry.
- */
- public synchronized void setServerHostKeyAlgorithms(String[] algos)
- {
- if ((algos == null) || (algos.length == 0))
- throw new IllegalArgumentException();
-
- algos = removeDuplicates(algos);
- KexManager.checkServerHostkeyAlgorithmsList(algos);
- cryptoWishList.serverHostKeyAlgorithms = algos;
- }
-
- /**
- * Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm) on the
- * underlying socket.
- * <p>
- * Can be called at any time. If the connection has not yet been established
- * then the passed value will be stored and set after the socket has been
- * set up. The default value that will be used is <code>false</code>.
- *
- * @param enable
- * the argument passed to the <code>Socket.setTCPNoDelay()</code>
- * method.
- * @throws IOException
- */
- public synchronized void setTCPNoDelay(boolean enable) throws IOException
- {
- tcpNoDelay = enable;
-
- if (tm != null)
- tm.setTcpNoDelay(enable);
- }
-
- /**
- * Used to tell the library that the connection shall be established through
- * a proxy server. It only makes sense to call this method before calling
- * the {@link #connect() connect()} method.
- * <p>
- * At the moment, only HTTP proxies are supported.
- * <p>
- * Note: This method can be called any number of times. The
- * {@link #connect() connect()} method will use the value set in the last
- * preceding invocation of this method.
- *
- * @see HTTPProxyData
- *
- * @param proxyData
- * Connection information about the proxy. If <code>null</code>,
- * then no proxy will be used (non surprisingly, this is also the
- * default).
- */
- public synchronized void setProxyData(ProxyData proxyData)
- {
- this.proxyData = proxyData;
- }
-
- /**
- * Request a remote port forwarding. If successful, then forwarded
- * connections will be redirected to the given target address. You can
- * cancle a requested remote port forwarding by calling
- * {@link #cancelRemotePortForwarding(int) cancelRemotePortForwarding()}.
- * <p>
- * A call of this method will block until the peer either agreed or
- * disagreed to your request-
- * <p>
- * Note 1: this method typically fails if you
- * <ul>
- * <li>pass a port number for which the used remote user has not enough
- * permissions (i.e., port < 1024)</li>
- * <li>or pass a port number that is already in use on the remote server</li>
- * <li>or if remote port forwarding is disabled on the server.</li>
- * </ul>
- * <p>
- * Note 2: (from the openssh man page): By default, the listening socket on
- * the server will be bound to the loopback interface only. This may be
- * overriden by specifying a bind address. Specifying a remote bind address
- * will only succeed if the server's <b>GatewayPorts</b> option is enabled
- * (see sshd_config(5)).
- *
- * @param bindAddress
- * address to bind to on the server:
- * <ul>
- * <li>"" means that connections are to be accepted on all
- * protocol families supported by the SSH implementation</li>
- * <li>"0.0.0.0" means to listen on all IPv4 addresses</li>
- * <li>"::" means to listen on all IPv6 addresses</li>
- * <li>"localhost" means to listen on all protocol families
- * supported by the SSH implementation on loopback addresses
- * only, [RFC3330] and RFC3513]</li>
- * <li>"127.0.0.1" and "::1" indicate listening on the loopback
- * interfaces for IPv4 and IPv6 respectively</li>
- * </ul>
- * @param bindPort
- * port number to bind on the server (must be > 0)
- * @param targetAddress
- * the target address (IP or hostname)
- * @param targetPort
- * the target port
- * @throws IOException
- */
- public synchronized void requestRemotePortForwarding(String bindAddress, int bindPort, String targetAddress,
- int targetPort) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("You need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("The connection is not authenticated.");
-
- if ((bindAddress == null) || (targetAddress == null) || (bindPort <= 0) || (targetPort <= 0))
- throw new IllegalArgumentException();
-
- cm.requestGlobalForward(bindAddress, bindPort, targetAddress, targetPort);
- }
-
- /**
- * Cancel an earlier requested remote port forwarding. Currently active
- * forwardings will not be affected (e.g., disrupted). Note that further
- * connection forwarding requests may be received until this method has
- * returned.
- *
- * @param bindPort
- * the allocated port number on the server
- * @throws IOException
- * if the remote side refuses the cancel request or another low
- * level error occurs (e.g., the underlying connection is
- * closed)
- */
- public synchronized void cancelRemotePortForwarding(int bindPort) throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("You need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("The connection is not authenticated.");
-
- cm.requestCancelGlobalForward(bindPort);
- }
-
- /**
- * Provide your own instance of SecureRandom. Can be used, e.g., if you want
- * to seed the used SecureRandom generator manually.
- * <p>
- * The SecureRandom instance is used during key exchanges, public key
- * authentication, x11 cookie generation and the like.
- *
- * @param rnd
- * a SecureRandom instance
- */
- public synchronized void setSecureRandom(SecureRandom rnd)
- {
- if (rnd == null)
- throw new IllegalArgumentException();
-
- this.generator = rnd;
- }
-
- /**
- * Enable/disable debug logging. <b>Only do this when requested by Trilead
- * support.</b>
- * <p>
- * For speed reasons, some static variables used to check whether debugging
- * is enabled are not protected with locks. In other words, if you
- * dynamicaly enable/disable debug logging, then some threads may still use
- * the old setting. To be on the safe side, enable debugging before doing
- * the <code>connect()</code> call.
- *
- * @param enable
- * on/off
- * @param logger
- * a {@link DebugLogger DebugLogger} instance, <code>null</code>
- * means logging using the simple logger which logs all messages
- * to to stderr. Ignored if enabled is <code>false</code>
- */
- public synchronized void enableDebugging(boolean enable, DebugLogger logger)
- {
- Logger.enabled = enable;
-
- if (enable == false)
- {
- Logger.logger = null;
- }
- else
- {
- if (logger == null)
- {
- logger = new DebugLogger()
- {
-
- public void log(int level, String className, String message)
- {
- long now = System.currentTimeMillis();
- System.err.println(now + " : " + className + ": " + message);
- }
- };
- }
-
- Logger.logger = logger;
- }
- }
-
- /**
- * This method can be used to perform end-to-end connection testing. It
- * sends a 'ping' message to the server and waits for the 'pong' from the
- * server.
- * <p>
- * When this method throws an exception, then you can assume that the
- * connection should be abandoned.
- * <p>
- * Note: Works only after one has passed successfully the authentication
- * step.
- * <p>
- * Implementation details: this method sends a SSH_MSG_GLOBAL_REQUEST
- * request ('trilead-ping') to the server and waits for the
- * SSH_MSG_REQUEST_FAILURE reply packet from the server.
- *
- * @throws IOException
- * in case of any problem
- */
- public synchronized void ping() throws IOException
- {
- if (tm == null)
- throw new IllegalStateException("You need to establish a connection first.");
-
- if (!authenticated)
- throw new IllegalStateException("The connection is not authenticated.");
-
- cm.requestGlobalTrileadPing();
- }
-}
+ +package com.trilead.ssh2; + +import java.io.CharArrayWriter; +import java.io.File; +import java.io.FileReader; +import java.io.IOException; +import java.net.InetSocketAddress; +import java.net.SocketTimeoutException; +import java.security.KeyPair; +import java.security.SecureRandom; +import java.security.Security; +import java.util.Set; +import java.util.Vector; + +import com.trilead.ssh2.auth.AuthenticationManager; +import com.trilead.ssh2.channel.ChannelManager; +import com.trilead.ssh2.crypto.CryptoWishList; +import com.trilead.ssh2.crypto.cipher.BlockCipherFactory; +import com.trilead.ssh2.crypto.digest.MAC; +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.PacketIgnore; +import com.trilead.ssh2.transport.KexManager; +import com.trilead.ssh2.transport.TransportManager; +import com.trilead.ssh2.util.TimeoutService; +import com.trilead.ssh2.util.TimeoutService.TimeoutToken; + +/** + * A <code>Connection</code> is used to establish an encrypted TCP/IP + * connection to a SSH-2 server. + * <p> + * Typically, one + * <ol> + * <li>creates a {@link #Connection(String) Connection} object.</li> + * <li>calls the {@link #connect() connect()} method.</li> + * <li>calls some of the authentication methods (e.g., + * {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()}).</li> + * <li>calls one or several times the {@link #openSession() openSession()} + * method.</li> + * <li>finally, one must close the connection and release resources with the + * {@link #close() close()} method.</li> + * </ol> + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Connection.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $ + */ + +public class Connection +{ + /** + * The identifier presented to the SSH-2 server. + */ + public final static String identification = "TrileadSSH2Java_213"; + + /** + * Will be used to generate all random data needed for the current + * connection. Note: SecureRandom.nextBytes() is thread safe. + */ + private SecureRandom generator; + + /** + * Unless you know what you are doing, you will never need this. + * + * @return The list of supported cipher algorithms by this implementation. + */ + public static synchronized String[] getAvailableCiphers() + { + return BlockCipherFactory.getDefaultCipherList(); + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @return The list of supported MAC algorthims by this implementation. + */ + public static synchronized String[] getAvailableMACs() + { + return MAC.getMacList(); + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @return The list of supported server host key algorthims by this + * implementation. + */ + public static synchronized String[] getAvailableServerHostKeyAlgorithms() + { + return KexManager.getDefaultServerHostkeyAlgorithmList(); + } + + private AuthenticationManager am; + + private boolean authenticated = false; + private boolean compression = false; + private ChannelManager cm; + + private CryptoWishList cryptoWishList = new CryptoWishList(); + + private DHGexParameters dhgexpara = new DHGexParameters(); + + private final String hostname; + + private final int port; + + private TransportManager tm; + + private boolean tcpNoDelay = false; + + private ProxyData proxyData = null; + + private Vector<ConnectionMonitor> connectionMonitors = new Vector<ConnectionMonitor>(); + + /** + * Prepares a fresh <code>Connection</code> object which can then be used + * to establish a connection to the specified SSH-2 server. + * <p> + * Same as {@link #Connection(String, int) Connection(hostname, 22)}. + * + * @param hostname + * the hostname of the SSH-2 server. + */ + public Connection(String hostname) + { + this(hostname, 22); + } + + /** + * Prepares a fresh <code>Connection</code> object which can then be used + * to establish a connection to the specified SSH-2 server. + * + * @param hostname + * the host where we later want to connect to. + * @param port + * port on the server, normally 22. + */ + public Connection(String hostname, int port) + { + this.hostname = hostname; + this.port = port; + } + + /** + * After a successful connect, one has to authenticate oneself. This method + * is based on DSA (it uses DSA to sign a challenge sent by the server). + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If the server does not accept the request (or if further + * authentication steps are needed), <code>false</code> is returned and + * one can retry either by using this or any other authentication method + * (use the <code>getRemainingAuthMethods</code> method to get a list of + * the remaining possible methods). + * + * @param user + * A <code>String</code> holding the username. + * @param pem + * A <code>String</code> containing the DSA private key of the + * user in OpenSSH key format (PEM, you can't miss the + * "-----BEGIN DSA PRIVATE KEY-----" tag). The string may contain + * linefeeds. + * @param password + * If the PEM string is 3DES encrypted ("DES-EDE3-CBC"), then you + * must specify the password. Otherwise, this argument will be + * ignored and can be set to <code>null</code>. + * + * @return whether the connection is now authenticated. + * @throws IOException + * + * @deprecated You should use one of the + * {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()} + * methods, this method is just a wrapper for it and will + * disappear in future builds. + * + */ + public synchronized boolean authenticateWithDSA(String user, String pem, String password) throws IOException + { + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + if (pem == null) + throw new IllegalArgumentException("pem argument is null"); + + authenticated = am.authenticatePublicKey(user, pem.toCharArray(), password, getOrCreateSecureRND()); + + return authenticated; + } + + /** + * A wrapper that calls + * {@link #authenticateWithKeyboardInteractive(String, String[], InteractiveCallback) + * authenticateWithKeyboardInteractivewith} a <code>null</code> submethod + * list. + * + * @param user + * A <code>String</code> holding the username. + * @param cb + * An <code>InteractiveCallback</code> which will be used to + * determine the responses to the questions asked by the server. + * @return whether the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithKeyboardInteractive(String user, InteractiveCallback cb) + throws IOException + { + return authenticateWithKeyboardInteractive(user, null, cb); + } + + /** + * After a successful connect, one has to authenticate oneself. This method + * is based on "keyboard-interactive", specified in + * draft-ietf-secsh-auth-kbdinteract-XX. Basically, you have to define a + * callback object which will be feeded with challenges generated by the + * server. Answers are then sent back to the server. It is possible that the + * callback will be called several times during the invocation of this + * method (e.g., if the server replies to the callback's answer(s) with + * another challenge...) + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If the server does not accept the request (or if further + * authentication steps are needed), <code>false</code> is returned and + * one can retry either by using this or any other authentication method + * (use the <code>getRemainingAuthMethods</code> method to get a list of + * the remaining possible methods). + * <p> + * Note: some SSH servers advertise "keyboard-interactive", however, any + * interactive request will be denied (without having sent any challenge to + * the client). + * + * @param user + * A <code>String</code> holding the username. + * @param submethods + * An array of submethod names, see + * draft-ietf-secsh-auth-kbdinteract-XX. May be <code>null</code> + * to indicate an empty list. + * @param cb + * An <code>InteractiveCallback</code> which will be used to + * determine the responses to the questions asked by the server. + * + * @return whether the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithKeyboardInteractive(String user, String[] submethods, + InteractiveCallback cb) throws IOException + { + if (cb == null) + throw new IllegalArgumentException("Callback may not ne NULL!"); + + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + authenticated = am.authenticateInteractive(user, submethods, cb); + + return authenticated; + } + + /** + * After a successful connect, one has to authenticate oneself. This method + * sends username and password to the server. + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If the server does not accept the request (or if further + * authentication steps are needed), <code>false</code> is returned and + * one can retry either by using this or any other authentication method + * (use the <code>getRemainingAuthMethods</code> method to get a list of + * the remaining possible methods). + * <p> + * Note: if this method fails, then please double-check that it is actually + * offered by the server (use + * {@link #getRemainingAuthMethods(String) getRemainingAuthMethods()}. + * <p> + * Often, password authentication is disabled, but users are not aware of + * it. Many servers only offer "publickey" and "keyboard-interactive". + * However, even though "keyboard-interactive" *feels* like password + * authentication (e.g., when using the putty or openssh clients) it is + * *not* the same mechanism. + * + * @param user + * @param password + * @return if the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithPassword(String user, String password) throws IOException + { + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + if (password == null) + throw new IllegalArgumentException("password argument is null"); + + authenticated = am.authenticatePassword(user, password); + + return authenticated; + } + + /** + * After a successful connect, one has to authenticate oneself. This method + * can be used to explicitly use the special "none" authentication method + * (where only a username has to be specified). + * <p> + * Note 1: The "none" method may always be tried by clients, however as by + * the specs, the server will not explicitly announce it. In other words, + * the "none" token will never show up in the list returned by + * {@link #getRemainingAuthMethods(String)}. + * <p> + * Note 2: no matter which one of the authenticateWithXXX() methods you + * call, the library will always issue exactly one initial "none" + * authentication request to retrieve the initially allowed list of + * authentication methods by the server. Please read RFC 4252 for the + * details. + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If further authentication steps are needed, <code>false</code> + * is returned and one can retry by any other authentication method (use the + * <code>getRemainingAuthMethods</code> method to get a list of the + * remaining possible methods). + * + * @param user + * @return if the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithNone(String user) throws IOException + { + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + /* Trigger the sending of the PacketUserauthRequestNone packet */ + /* (if not already done) */ + + authenticated = am.authenticateNone(user); + + return authenticated; + } + + /** + * After a successful connect, one has to authenticate oneself. The + * authentication method "publickey" works by signing a challenge sent by + * the server. The signature is either DSA or RSA based - it just depends on + * the type of private key you specify, either a DSA or RSA private key in + * PEM format. And yes, this is may seem to be a little confusing, the + * method is called "publickey" in the SSH-2 protocol specification, however + * since we need to generate a signature, you actually have to supply a + * private key =). + * <p> + * The private key contained in the PEM file may also be encrypted + * ("Proc-Type: 4,ENCRYPTED"). The library supports DES-CBC and DES-EDE3-CBC + * encryption, as well as the more exotic PEM encrpytions AES-128-CBC, + * AES-192-CBC and AES-256-CBC. + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If the server does not accept the request (or if further + * authentication steps are needed), <code>false</code> is returned and + * one can retry either by using this or any other authentication method + * (use the <code>getRemainingAuthMethods</code> method to get a list of + * the remaining possible methods). + * <p> + * NOTE PUTTY USERS: Event though your key file may start with + * "-----BEGIN..." it is not in the expected format. You have to convert it + * to the OpenSSH key format by using the "puttygen" tool (can be downloaded + * from the Putty website). Simply load your key and then use the + * "Conversions/Export OpenSSH key" functionality to get a proper PEM file. + * + * @param user + * A <code>String</code> holding the username. + * @param pemPrivateKey + * A <code>char[]</code> containing a DSA or RSA private key of + * the user in OpenSSH key format (PEM, you can't miss the + * "-----BEGIN DSA PRIVATE KEY-----" or "-----BEGIN RSA PRIVATE + * KEY-----" tag). The char array may contain + * linebreaks/linefeeds. + * @param password + * If the PEM structure is encrypted ("Proc-Type: 4,ENCRYPTED") + * then you must specify a password. Otherwise, this argument + * will be ignored and can be set to <code>null</code>. + * + * @return whether the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithPublicKey(String user, char[] pemPrivateKey, String password) + throws IOException + { + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + if (pemPrivateKey == null) + throw new IllegalArgumentException("pemPrivateKey argument is null"); + + authenticated = am.authenticatePublicKey(user, pemPrivateKey, password, getOrCreateSecureRND()); + + return authenticated; + } + + /** + * After a successful connect, one has to authenticate oneself. The + * authentication method "publickey" works by signing a challenge sent by + * the server. The signature is either DSA or RSA based - it just depends on + * the type of private key you specify, either a DSA or RSA private key in + * PEM format. And yes, this is may seem to be a little confusing, the + * method is called "publickey" in the SSH-2 protocol specification, however + * since we need to generate a signature, you actually have to supply a + * private key =). + * <p> + * If the authentication phase is complete, <code>true</code> will be + * returned. If the server does not accept the request (or if further + * authentication steps are needed), <code>false</code> is returned and + * one can retry either by using this or any other authentication method + * (use the <code>getRemainingAuthMethods</code> method to get a list of + * the remaining possible methods). + * + * @param user + * A <code>String</code> holding the username. + * @param key + * A <code>RSAPrivateKey</code> or <code>DSAPrivateKey</code> + * containing a DSA or RSA private key of + * the user in Trilead object format. + * + * @return whether the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithPublicKey(String user, KeyPair pair) + throws IOException + { + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + if (user == null) + throw new IllegalArgumentException("user argument is null"); + + if (pair == null) + throw new IllegalArgumentException("Key pair argument is null"); + + authenticated = am.authenticatePublicKey(user, pair, getOrCreateSecureRND()); + + return authenticated; + } + /** + * A convenience wrapper function which reads in a private key (PEM format, + * either DSA or RSA) and then calls + * <code>authenticateWithPublicKey(String, char[], String)</code>. + * <p> + * NOTE PUTTY USERS: Event though your key file may start with + * "-----BEGIN..." it is not in the expected format. You have to convert it + * to the OpenSSH key format by using the "puttygen" tool (can be downloaded + * from the Putty website). Simply load your key and then use the + * "Conversions/Export OpenSSH key" functionality to get a proper PEM file. + * + * @param user + * A <code>String</code> holding the username. + * @param pemFile + * A <code>File</code> object pointing to a file containing a + * DSA or RSA private key of the user in OpenSSH key format (PEM, + * you can't miss the "-----BEGIN DSA PRIVATE KEY-----" or + * "-----BEGIN RSA PRIVATE KEY-----" tag). + * @param password + * If the PEM file is encrypted then you must specify the + * password. Otherwise, this argument will be ignored and can be + * set to <code>null</code>. + * + * @return whether the connection is now authenticated. + * @throws IOException + */ + public synchronized boolean authenticateWithPublicKey(String user, File pemFile, String password) + throws IOException + { + if (pemFile == null) + throw new IllegalArgumentException("pemFile argument is null"); + + char[] buff = new char[256]; + + CharArrayWriter cw = new CharArrayWriter(); + + FileReader fr = new FileReader(pemFile); + + while (true) + { + int len = fr.read(buff); + if (len < 0) + break; + cw.write(buff, 0, len); + } + + fr.close(); + + return authenticateWithPublicKey(user, cw.toCharArray(), password); + } + + /** + * Add a {@link ConnectionMonitor} to this connection. Can be invoked at any + * time, but it is best to add connection monitors before invoking + * <code>connect()</code> to avoid glitches (e.g., you add a connection + * monitor after a successful connect(), but the connection has died in the + * mean time. Then, your connection monitor won't be notified.) + * <p> + * You can add as many monitors as you like. + * + * @see ConnectionMonitor + * + * @param cmon + * An object implementing the <code>ConnectionMonitor</code> + * interface. + */ + public synchronized void addConnectionMonitor(ConnectionMonitor cmon) + { + if (cmon == null) + throw new IllegalArgumentException("cmon argument is null"); + + connectionMonitors.addElement(cmon); + + if (tm != null) + tm.setConnectionMonitors(connectionMonitors); + } + + /** + * Controls whether compression is used on the link or not. + * <p> + * Note: This can only be called before connect() + * @param enabled whether to enable compression + * @throws IOException + */ + public synchronized void setCompression(boolean enabled) throws IOException { + if (tm != null) + throw new IOException("Connection to " + hostname + " is already in connected state!"); + + compression = enabled; + } + + /** + * Close the connection to the SSH-2 server. All assigned sessions will be + * closed, too. Can be called at any time. Don't forget to call this once + * you don't need a connection anymore - otherwise the receiver thread may + * run forever. + */ + public synchronized void close() + { + Throwable t = new Throwable("Closed due to user request."); + close(t, false); + } + + private void close(Throwable t, boolean hard) + { + if (cm != null) + cm.closeAllChannels(); + + if (tm != null) + { + tm.close(t, hard == false); + tm = null; + } + am = null; + cm = null; + authenticated = false; + } + + /** + * Same as + * {@link #connect(ServerHostKeyVerifier, int, int) connect(null, 0, 0)}. + * + * @return see comments for the + * {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)} + * method. + * @throws IOException + */ + public synchronized ConnectionInfo connect() throws IOException + { + return connect(null, 0, 0); + } + + /** + * Same as + * {@link #connect(ServerHostKeyVerifier, int, int) connect(verifier, 0, 0)}. + * + * @return see comments for the + * {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)} + * method. + * @throws IOException + */ + public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier) throws IOException + { + return connect(verifier, 0, 0); + } + + /** + * Connect to the SSH-2 server and, as soon as the server has presented its + * host key, use the + * {@link ServerHostKeyVerifier#verifyServerHostKey(String, int, String, + * byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method of the + * <code>verifier</code> to ask for permission to proceed. If + * <code>verifier</code> is <code>null</code>, then any host key will + * be accepted - this is NOT recommended, since it makes man-in-the-middle + * attackes VERY easy (somebody could put a proxy SSH server between you and + * the real server). + * <p> + * Note: The verifier will be called before doing any crypto calculations + * (i.e., diffie-hellman). Therefore, if you don't like the presented host + * key then no CPU cycles are wasted (and the evil server has less + * information about us). + * <p> + * However, it is still possible that the server presented a fake host key: + * the server cheated (typically a sign for a man-in-the-middle attack) and + * is not able to generate a signature that matches its host key. Don't + * worry, the library will detect such a scenario later when checking the + * signature (the signature cannot be checked before having completed the + * diffie-hellman exchange). + * <p> + * Note 2: The {@link ServerHostKeyVerifier#verifyServerHostKey(String, int, + * String, byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method will + * *NOT* be called from the current thread, the call is being made from a + * background thread (there is a background dispatcher thread for every + * established connection). + * <p> + * Note 3: This method will block as long as the key exchange of the + * underlying connection has not been completed (and you have not specified + * any timeouts). + * <p> + * Note 4: If you want to re-use a connection object that was successfully + * connected, then you must call the {@link #close()} method before invoking + * <code>connect()</code> again. + * + * @param verifier + * An object that implements the {@link ServerHostKeyVerifier} + * interface. Pass <code>null</code> to accept any server host + * key - NOT recommended. + * + * @param connectTimeout + * Connect the underlying TCP socket to the server with the given + * timeout value (non-negative, in milliseconds). Zero means no + * timeout. If a proxy is being used (see + * {@link #setProxyData(ProxyData)}), then this timeout is used + * for the connection establishment to the proxy. + * + * @param kexTimeout + * Timeout for complete connection establishment (non-negative, + * in milliseconds). Zero means no timeout. The timeout counts + * from the moment you invoke the connect() method and is + * cancelled as soon as the first key-exchange round has + * finished. It is possible that the timeout event will be fired + * during the invocation of the <code>verifier</code> callback, + * but it will only have an effect after the + * <code>verifier</code> returns. + * + * @return A {@link ConnectionInfo} object containing the details of the + * established connection. + * + * @throws IOException + * If any problem occurs, e.g., the server's host key is not + * accepted by the <code>verifier</code> or there is problem + * during the initial crypto setup (e.g., the signature sent by + * the server is wrong). + * <p> + * In case of a timeout (either connectTimeout or kexTimeout) a + * SocketTimeoutException is thrown. + * <p> + * An exception may also be thrown if the connection was already + * successfully connected (no matter if the connection broke in + * the mean time) and you invoke <code>connect()</code> again + * without having called {@link #close()} first. + * <p> + * If a HTTP proxy is being used and the proxy refuses the + * connection, then a {@link HTTPProxyException} may be thrown, + * which contains the details returned by the proxy. If the + * proxy is buggy and does not return a proper HTTP response, + * then a normal IOException is thrown instead. + */ + public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier, int connectTimeout, int kexTimeout) + throws IOException + { + final class TimeoutState + { + boolean isCancelled = false; + boolean timeoutSocketClosed = false; + } + + if (tm != null) + throw new IOException("Connection to " + hostname + " is already in connected state!"); + + if (connectTimeout < 0) + throw new IllegalArgumentException("connectTimeout must be non-negative!"); + + if (kexTimeout < 0) + throw new IllegalArgumentException("kexTimeout must be non-negative!"); + + final TimeoutState state = new TimeoutState(); + + tm = new TransportManager(hostname, port); + + tm.setConnectionMonitors(connectionMonitors); + + // Don't offer compression if not requested + if (!compression) { + cryptoWishList.c2s_comp_algos = new String[] { "none" }; + cryptoWishList.s2c_comp_algos = new String[] { "none" }; + } + + /* + * Make sure that the runnable below will observe the new value of "tm" + * and "state" (the runnable will be executed in a different thread, + * which may be already running, that is why we need a memory barrier + * here). See also the comment in Channel.java if you are interested in + * the details. + * + * OKOK, this is paranoid since adding the runnable to the todo list of + * the TimeoutService will ensure that all writes have been flushed + * before the Runnable reads anything (there is a synchronized block in + * TimeoutService.addTimeoutHandler). + */ + + synchronized (tm) + { + /* We could actually synchronize on anything. */ + } + + try + { + TimeoutToken token = null; + + if (kexTimeout > 0) + { + final Runnable timeoutHandler = new Runnable() + { + public void run() + { + synchronized (state) + { + if (state.isCancelled) + return; + state.timeoutSocketClosed = true; + tm.close(new SocketTimeoutException("The connect timeout expired"), false); + } + } + }; + + long timeoutHorizont = System.currentTimeMillis() + kexTimeout; + + token = TimeoutService.addTimeoutHandler(timeoutHorizont, timeoutHandler); + } + + try + { + tm.initialize(cryptoWishList, verifier, dhgexpara, connectTimeout, getOrCreateSecureRND(), proxyData); + } + catch (SocketTimeoutException se) + { + throw (SocketTimeoutException) new SocketTimeoutException( + "The connect() operation on the socket timed out.").initCause(se); + } + + tm.setTcpNoDelay(tcpNoDelay); + + /* Wait until first KEX has finished */ + + ConnectionInfo ci = tm.getConnectionInfo(1); + + /* Now try to cancel the timeout, if needed */ + + if (token != null) + { + TimeoutService.cancelTimeoutHandler(token); + + /* Were we too late? */ + + synchronized (state) + { + if (state.timeoutSocketClosed) + throw new IOException("This exception will be replaced by the one below =)"); + /* + * Just in case the "cancelTimeoutHandler" invocation came + * just a little bit too late but the handler did not enter + * the semaphore yet - we can still stop it. + */ + state.isCancelled = true; + } + } + + return ci; + } + catch (SocketTimeoutException ste) + { + throw ste; + } + catch (IOException e1) + { + /* This will also invoke any registered connection monitors */ + close(new Throwable("There was a problem during connect."), false); + + synchronized (state) + { + /* + * Show a clean exception, not something like "the socket is + * closed!?!" + */ + if (state.timeoutSocketClosed) + throw new SocketTimeoutException("The kexTimeout (" + kexTimeout + " ms) expired."); + } + + /* Do not wrap a HTTPProxyException */ + if (e1 instanceof HTTPProxyException) + throw e1; + + throw (IOException) new IOException("There was a problem while connecting to " + hostname + ":" + port) + .initCause(e1); + } + } + + /** + * Creates a new {@link LocalPortForwarder}. A + * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive + * at a local port via the secure tunnel to another host (which may or may + * not be identical to the remote SSH-2 server). + * <p> + * This method must only be called after one has passed successfully the + * authentication step. There is no limit on the number of concurrent + * forwardings. + * + * @param local_port + * the local port the LocalPortForwarder shall bind to. + * @param host_to_connect + * target address (IP or hostname) + * @param port_to_connect + * target port + * @return A {@link LocalPortForwarder} object. + * @throws IOException + */ + public synchronized LocalPortForwarder createLocalPortForwarder(int local_port, String host_to_connect, + int port_to_connect) throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot forward ports, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot forward ports, connection is not authenticated."); + + return new LocalPortForwarder(cm, local_port, host_to_connect, port_to_connect); + } + + /** + * Creates a new {@link LocalPortForwarder}. A + * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive + * at a local port via the secure tunnel to another host (which may or may + * not be identical to the remote SSH-2 server). + * <p> + * This method must only be called after one has passed successfully the + * authentication step. There is no limit on the number of concurrent + * forwardings. + * + * @param addr + * specifies the InetSocketAddress where the local socket shall + * be bound to. + * @param host_to_connect + * target address (IP or hostname) + * @param port_to_connect + * target port + * @return A {@link LocalPortForwarder} object. + * @throws IOException + */ + public synchronized LocalPortForwarder createLocalPortForwarder(InetSocketAddress addr, String host_to_connect, + int port_to_connect) throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot forward ports, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot forward ports, connection is not authenticated."); + + return new LocalPortForwarder(cm, addr, host_to_connect, port_to_connect); + } + + /** + * Creates a new {@link LocalStreamForwarder}. A + * <code>LocalStreamForwarder</code> manages an Input/Outputstream pair + * that is being forwarded via the secure tunnel into a TCP/IP connection to + * another host (which may or may not be identical to the remote SSH-2 + * server). + * + * @param host_to_connect + * @param port_to_connect + * @return A {@link LocalStreamForwarder} object. + * @throws IOException + */ + public synchronized LocalStreamForwarder createLocalStreamForwarder(String host_to_connect, int port_to_connect) + throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot forward, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot forward, connection is not authenticated."); + + return new LocalStreamForwarder(cm, host_to_connect, port_to_connect); + } + + /** + * Creates a new {@link DynamicPortForwarder}. A + * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive + * at a local port via the secure tunnel to another host that is chosen via + * the SOCKS protocol. + * <p> + * This method must only be called after one has passed successfully the + * authentication step. There is no limit on the number of concurrent + * forwardings. + * + * @param local_port + * @return A {@link DynamicPortForwarder} object. + * @throws IOException + */ + public synchronized DynamicPortForwarder createDynamicPortForwarder(int local_port) throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot forward ports, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot forward ports, connection is not authenticated."); + + return new DynamicPortForwarder(cm, local_port); + } + + /** + * Creates a new {@link DynamicPortForwarder}. A + * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive + * at a local port via the secure tunnel to another host that is chosen via + * the SOCKS protocol. + * <p> + * This method must only be called after one has passed successfully the + * authentication step. There is no limit on the number of concurrent + * forwardings. + * + * @param addr + * specifies the InetSocketAddress where the local socket shall + * be bound to. + * @return A {@link DynamicPortForwarder} object. + * @throws IOException + */ + public synchronized DynamicPortForwarder createDynamicPortForwarder(InetSocketAddress addr) throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot forward ports, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot forward ports, connection is not authenticated."); + + return new DynamicPortForwarder(cm, addr); + } + + /** + * Create a very basic {@link SCPClient} that can be used to copy files + * from/to the SSH-2 server. + * <p> + * Works only after one has passed successfully the authentication step. + * There is no limit on the number of concurrent SCP clients. + * <p> + * Note: This factory method will probably disappear in the future. + * + * @return A {@link SCPClient} object. + * @throws IOException + */ + public synchronized SCPClient createSCPClient() throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot create SCP client, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot create SCP client, connection is not authenticated."); + + return new SCPClient(this); + } + + /** + * Force an asynchronous key re-exchange (the call does not block). The + * latest values set for MAC, Cipher and DH group exchange parameters will + * be used. If a key exchange is currently in progress, then this method has + * the only effect that the so far specified parameters will be used for the + * next (server driven) key exchange. + * <p> + * Note: This implementation will never start a key exchange (other than the + * initial one) unless you or the SSH-2 server ask for it. + * + * @throws IOException + * In case of any failure behind the scenes. + */ + public synchronized void forceKeyExchange() throws IOException + { + if (tm == null) + throw new IllegalStateException("You need to establish a connection first."); + + tm.forceKeyExchange(cryptoWishList, dhgexpara); + } + + /** + * Returns the hostname that was passed to the constructor. + * + * @return the hostname + */ + public synchronized String getHostname() + { + return hostname; + } + + /** + * Returns the port that was passed to the constructor. + * + * @return the TCP port + */ + public synchronized int getPort() + { + return port; + } + + /** + * Returns a {@link ConnectionInfo} object containing the details of the + * connection. Can be called as soon as the connection has been established + * (successfully connected). + * + * @return A {@link ConnectionInfo} object. + * @throws IOException + * In case of any failure behind the scenes. + */ + public synchronized ConnectionInfo getConnectionInfo() throws IOException + { + if (tm == null) + throw new IllegalStateException( + "Cannot get details of connection, you need to establish a connection first."); + return tm.getConnectionInfo(1); + } + + /** + * After a successful connect, one has to authenticate oneself. This method + * can be used to tell which authentication methods are supported by the + * server at a certain stage of the authentication process (for the given + * username). + * <p> + * Note 1: the username will only be used if no authentication step was done + * so far (it will be used to ask the server for a list of possible + * authentication methods by sending the initial "none" request). Otherwise, + * this method ignores the user name and returns a cached method list (which + * is based on the information contained in the last negative server + * response). + * <p> + * Note 2: the server may return method names that are not supported by this + * implementation. + * <p> + * After a successful authentication, this method must not be called + * anymore. + * + * @param user + * A <code>String</code> holding the username. + * + * @return a (possibly emtpy) array holding authentication method names. + * @throws IOException + */ + public synchronized String[] getRemainingAuthMethods(String user) throws IOException + { + if (user == null) + throw new IllegalArgumentException("user argument may not be NULL!"); + + if (tm == null) + throw new IllegalStateException("Connection is not established!"); + + if (authenticated) + throw new IllegalStateException("Connection is already authenticated!"); + + if (am == null) + am = new AuthenticationManager(tm); + + if (cm == null) + cm = new ChannelManager(tm); + + return am.getRemainingMethods(user); + } + + /** + * Determines if the authentication phase is complete. Can be called at any + * time. + * + * @return <code>true</code> if no further authentication steps are + * needed. + */ + public synchronized boolean isAuthenticationComplete() + { + return authenticated; + } + + /** + * Returns true if there was at least one failed authentication request and + * the last failed authentication request was marked with "partial success" + * by the server. This is only needed in the rare case of SSH-2 server + * setups that cannot be satisfied with a single successful authentication + * request (i.e., multiple authentication steps are needed.) + * <p> + * If you are interested in the details, then have a look at RFC4252. + * + * @return if the there was a failed authentication step and the last one + * was marked as a "partial success". + */ + public synchronized boolean isAuthenticationPartialSuccess() + { + if (am == null) + return false; + + return am.getPartialSuccess(); + } + + /** + * Checks if a specified authentication method is available. This method is + * actually just a wrapper for {@link #getRemainingAuthMethods(String) + * getRemainingAuthMethods()}. + * + * @param user + * A <code>String</code> holding the username. + * @param method + * An authentication method name (e.g., "publickey", "password", + * "keyboard-interactive") as specified by the SSH-2 standard. + * @return if the specified authentication method is currently available. + * @throws IOException + */ + public synchronized boolean isAuthMethodAvailable(String user, String method) throws IOException + { + if (method == null) + throw new IllegalArgumentException("method argument may not be NULL!"); + + String methods[] = getRemainingAuthMethods(user); + + for (int i = 0; i < methods.length; i++) + { + if (methods[i].compareTo(method) == 0) + return true; + } + + return false; + } + + private final SecureRandom getOrCreateSecureRND() + { + if (generator == null) + generator = new SecureRandom(); + + return generator; + } + + /** + * Open a new {@link Session} on this connection. Works only after one has + * passed successfully the authentication step. There is no limit on the + * number of concurrent sessions. + * + * @return A {@link Session} object. + * @throws IOException + */ + public synchronized Session openSession() throws IOException + { + if (tm == null) + throw new IllegalStateException("Cannot open session, you need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("Cannot open session, connection is not authenticated."); + + return new Session(cm, getOrCreateSecureRND()); + } + + /** + * Send an SSH_MSG_IGNORE packet. This method will generate a random data + * attribute (length between 0 (invlusive) and 16 (exclusive) bytes, + * contents are random bytes). + * <p> + * This method must only be called once the connection is established. + * + * @throws IOException + */ + public synchronized void sendIgnorePacket() throws IOException + { + SecureRandom rnd = getOrCreateSecureRND(); + + byte[] data = new byte[rnd.nextInt(16)]; + rnd.nextBytes(data); + + sendIgnorePacket(data); + } + + /** + * Send an SSH_MSG_IGNORE packet with the given data attribute. + * <p> + * This method must only be called once the connection is established. + * + * @throws IOException + */ + public synchronized void sendIgnorePacket(byte[] data) throws IOException + { + if (data == null) + throw new IllegalArgumentException("data argument must not be null."); + + if (tm == null) + throw new IllegalStateException( + "Cannot send SSH_MSG_IGNORE packet, you need to establish a connection first."); + + PacketIgnore pi = new PacketIgnore(); + pi.setData(data); + + tm.sendMessage(pi.getPayload()); + } + + /** + * Removes duplicates from a String array, keeps only first occurence of + * each element. Does not destroy order of elements; can handle nulls. Uses + * a very efficient O(N^2) algorithm =) + * + * @param list + * a String array. + * @return a cleaned String array. + */ + private String[] removeDuplicates(String[] list) + { + if ((list == null) || (list.length < 2)) + return list; + + String[] list2 = new String[list.length]; + + int count = 0; + + for (int i = 0; i < list.length; i++) + { + boolean duplicate = false; + + String element = list[i]; + + for (int j = 0; j < count; j++) + { + if (((element == null) && (list2[j] == null)) || ((element != null) && (element.equals(list2[j])))) + { + duplicate = true; + break; + } + } + + if (duplicate) + continue; + + list2[count++] = list[i]; + } + + if (count == list2.length) + return list2; + + String[] tmp = new String[count]; + System.arraycopy(list2, 0, tmp, 0, count); + + return tmp; + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @param ciphers + */ + public synchronized void setClient2ServerCiphers(String[] ciphers) + { + if ((ciphers == null) || (ciphers.length == 0)) + throw new IllegalArgumentException(); + ciphers = removeDuplicates(ciphers); + BlockCipherFactory.checkCipherList(ciphers); + cryptoWishList.c2s_enc_algos = ciphers; + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @param macs + */ + public synchronized void setClient2ServerMACs(String[] macs) + { + if ((macs == null) || (macs.length == 0)) + throw new IllegalArgumentException(); + macs = removeDuplicates(macs); + MAC.checkMacList(macs); + cryptoWishList.c2s_mac_algos = macs; + } + + /** + * Sets the parameters for the diffie-hellman group exchange. Unless you + * know what you are doing, you will never need this. Default values are + * defined in the {@link DHGexParameters} class. + * + * @param dgp + * {@link DHGexParameters}, non null. + * + */ + public synchronized void setDHGexParameters(DHGexParameters dgp) + { + if (dgp == null) + throw new IllegalArgumentException(); + + dhgexpara = dgp; + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @param ciphers + */ + public synchronized void setServer2ClientCiphers(String[] ciphers) + { + if ((ciphers == null) || (ciphers.length == 0)) + throw new IllegalArgumentException(); + ciphers = removeDuplicates(ciphers); + BlockCipherFactory.checkCipherList(ciphers); + cryptoWishList.s2c_enc_algos = ciphers; + } + + /** + * Unless you know what you are doing, you will never need this. + * + * @param macs + */ + public synchronized void setServer2ClientMACs(String[] macs) + { + if ((macs == null) || (macs.length == 0)) + throw new IllegalArgumentException(); + + macs = removeDuplicates(macs); + MAC.checkMacList(macs); + cryptoWishList.s2c_mac_algos = macs; + } + + /** + * Define the set of allowed server host key algorithms to be used for the + * following key exchange operations. + * <p> + * Unless you know what you are doing, you will never need this. + * + * @param algos + * An array of allowed server host key algorithms. SSH-2 defines + * <code>ssh-dss</code> and <code>ssh-rsa</code>. The + * entries of the array must be ordered after preference, i.e., + * the entry at index 0 is the most preferred one. You must + * specify at least one entry. + */ + public synchronized void setServerHostKeyAlgorithms(String[] algos) + { + if ((algos == null) || (algos.length == 0)) + throw new IllegalArgumentException(); + + algos = removeDuplicates(algos); + KexManager.checkServerHostkeyAlgorithmsList(algos); + cryptoWishList.serverHostKeyAlgorithms = algos; + } + + /** + * Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm) on the + * underlying socket. + * <p> + * Can be called at any time. If the connection has not yet been established + * then the passed value will be stored and set after the socket has been + * set up. The default value that will be used is <code>false</code>. + * + * @param enable + * the argument passed to the <code>Socket.setTCPNoDelay()</code> + * method. + * @throws IOException + */ + public synchronized void setTCPNoDelay(boolean enable) throws IOException + { + tcpNoDelay = enable; + + if (tm != null) + tm.setTcpNoDelay(enable); + } + + /** + * Used to tell the library that the connection shall be established through + * a proxy server. It only makes sense to call this method before calling + * the {@link #connect() connect()} method. + * <p> + * At the moment, only HTTP proxies are supported. + * <p> + * Note: This method can be called any number of times. The + * {@link #connect() connect()} method will use the value set in the last + * preceding invocation of this method. + * + * @see HTTPProxyData + * + * @param proxyData + * Connection information about the proxy. If <code>null</code>, + * then no proxy will be used (non surprisingly, this is also the + * default). + */ + public synchronized void setProxyData(ProxyData proxyData) + { + this.proxyData = proxyData; + } + + /** + * Request a remote port forwarding. If successful, then forwarded + * connections will be redirected to the given target address. You can + * cancle a requested remote port forwarding by calling + * {@link #cancelRemotePortForwarding(int) cancelRemotePortForwarding()}. + * <p> + * A call of this method will block until the peer either agreed or + * disagreed to your request- + * <p> + * Note 1: this method typically fails if you + * <ul> + * <li>pass a port number for which the used remote user has not enough + * permissions (i.e., port < 1024)</li> + * <li>or pass a port number that is already in use on the remote server</li> + * <li>or if remote port forwarding is disabled on the server.</li> + * </ul> + * <p> + * Note 2: (from the openssh man page): By default, the listening socket on + * the server will be bound to the loopback interface only. This may be + * overriden by specifying a bind address. Specifying a remote bind address + * will only succeed if the server's <b>GatewayPorts</b> option is enabled + * (see sshd_config(5)). + * + * @param bindAddress + * address to bind to on the server: + * <ul> + * <li>"" means that connections are to be accepted on all + * protocol families supported by the SSH implementation</li> + * <li>"0.0.0.0" means to listen on all IPv4 addresses</li> + * <li>"::" means to listen on all IPv6 addresses</li> + * <li>"localhost" means to listen on all protocol families + * supported by the SSH implementation on loopback addresses + * only, [RFC3330] and RFC3513]</li> + * <li>"127.0.0.1" and "::1" indicate listening on the loopback + * interfaces for IPv4 and IPv6 respectively</li> + * </ul> + * @param bindPort + * port number to bind on the server (must be > 0) + * @param targetAddress + * the target address (IP or hostname) + * @param targetPort + * the target port + * @throws IOException + */ + public synchronized void requestRemotePortForwarding(String bindAddress, int bindPort, String targetAddress, + int targetPort) throws IOException + { + if (tm == null) + throw new IllegalStateException("You need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("The connection is not authenticated."); + + if ((bindAddress == null) || (targetAddress == null) || (bindPort <= 0) || (targetPort <= 0)) + throw new IllegalArgumentException(); + + cm.requestGlobalForward(bindAddress, bindPort, targetAddress, targetPort); + } + + /** + * Cancel an earlier requested remote port forwarding. Currently active + * forwardings will not be affected (e.g., disrupted). Note that further + * connection forwarding requests may be received until this method has + * returned. + * + * @param bindPort + * the allocated port number on the server + * @throws IOException + * if the remote side refuses the cancel request or another low + * level error occurs (e.g., the underlying connection is + * closed) + */ + public synchronized void cancelRemotePortForwarding(int bindPort) throws IOException + { + if (tm == null) + throw new IllegalStateException("You need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("The connection is not authenticated."); + + cm.requestCancelGlobalForward(bindPort); + } + + /** + * Provide your own instance of SecureRandom. Can be used, e.g., if you want + * to seed the used SecureRandom generator manually. + * <p> + * The SecureRandom instance is used during key exchanges, public key + * authentication, x11 cookie generation and the like. + * + * @param rnd + * a SecureRandom instance + */ + public synchronized void setSecureRandom(SecureRandom rnd) + { + if (rnd == null) + throw new IllegalArgumentException(); + + this.generator = rnd; + } + + /** + * Enable/disable debug logging. <b>Only do this when requested by Trilead + * support.</b> + * <p> + * For speed reasons, some static variables used to check whether debugging + * is enabled are not protected with locks. In other words, if you + * dynamicaly enable/disable debug logging, then some threads may still use + * the old setting. To be on the safe side, enable debugging before doing + * the <code>connect()</code> call. + * + * @param enable + * on/off + * @param logger + * a {@link DebugLogger DebugLogger} instance, <code>null</code> + * means logging using the simple logger which logs all messages + * to to stderr. Ignored if enabled is <code>false</code> + */ + public synchronized void enableDebugging(boolean enable, DebugLogger logger) + { + Logger.enabled = enable; + + if (enable == false) + { + Logger.logger = null; + } + else + { + if (logger == null) + { + logger = new DebugLogger() + { + + public void log(int level, String className, String message) + { + long now = System.currentTimeMillis(); + System.err.println(now + " : " + className + ": " + message); + } + }; + } + + Logger.logger = logger; + } + } + + /** + * This method can be used to perform end-to-end connection testing. It + * sends a 'ping' message to the server and waits for the 'pong' from the + * server. + * <p> + * When this method throws an exception, then you can assume that the + * connection should be abandoned. + * <p> + * Note: Works only after one has passed successfully the authentication + * step. + * <p> + * Implementation details: this method sends a SSH_MSG_GLOBAL_REQUEST + * request ('trilead-ping') to the server and waits for the + * SSH_MSG_REQUEST_FAILURE reply packet from the server. + * + * @throws IOException + * in case of any problem + */ + public synchronized void ping() throws IOException + { + if (tm == null) + throw new IllegalStateException("You need to establish a connection first."); + + if (!authenticated) + throw new IllegalStateException("The connection is not authenticated."); + + cm.requestGlobalTrileadPing(); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/ConnectionInfo.java b/lib/src/main/java/com/trilead/ssh2/ConnectionInfo.java index 34d9453..b0ddbcf 100644 --- a/lib/src/main/java/com/trilead/ssh2/ConnectionInfo.java +++ b/lib/src/main/java/com/trilead/ssh2/ConnectionInfo.java @@ -1,53 +1,53 @@ -
-package com.trilead.ssh2;
-
-/**
- * In most cases you probably do not need the information contained in here.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ConnectionInfo.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class ConnectionInfo
-{
- /**
- * The used key exchange (KEX) algorithm in the latest key exchange.
- */
- public String keyExchangeAlgorithm;
-
- /**
- * The currently used crypto algorithm for packets from to the client to the
- * server.
- */
- public String clientToServerCryptoAlgorithm;
- /**
- * The currently used crypto algorithm for packets from to the server to the
- * client.
- */
- public String serverToClientCryptoAlgorithm;
-
- /**
- * The currently used MAC algorithm for packets from to the client to the
- * server.
- */
- public String clientToServerMACAlgorithm;
- /**
- * The currently used MAC algorithm for packets from to the server to the
- * client.
- */
- public String serverToClientMACAlgorithm;
-
- /**
- * The type of the server host key (currently either "ssh-dss" or
- * "ssh-rsa").
- */
- public String serverHostKeyAlgorithm;
- /**
- * The server host key that was sent during the latest key exchange.
- */
- public byte[] serverHostKey;
-
- /**
- * Number of kex exchanges performed on this connection so far.
- */
- public int keyExchangeCounter = 0;
-}
+ +package com.trilead.ssh2; + +/** + * In most cases you probably do not need the information contained in here. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ConnectionInfo.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class ConnectionInfo +{ + /** + * The used key exchange (KEX) algorithm in the latest key exchange. + */ + public String keyExchangeAlgorithm; + + /** + * The currently used crypto algorithm for packets from to the client to the + * server. + */ + public String clientToServerCryptoAlgorithm; + /** + * The currently used crypto algorithm for packets from to the server to the + * client. + */ + public String serverToClientCryptoAlgorithm; + + /** + * The currently used MAC algorithm for packets from to the client to the + * server. + */ + public String clientToServerMACAlgorithm; + /** + * The currently used MAC algorithm for packets from to the server to the + * client. + */ + public String serverToClientMACAlgorithm; + + /** + * The type of the server host key (currently either "ssh-dss" or + * "ssh-rsa"). + */ + public String serverHostKeyAlgorithm; + /** + * The server host key that was sent during the latest key exchange. + */ + public byte[] serverHostKey; + + /** + * Number of kex exchanges performed on this connection so far. + */ + public int keyExchangeCounter = 0; +} diff --git a/lib/src/main/java/com/trilead/ssh2/ConnectionMonitor.java b/lib/src/main/java/com/trilead/ssh2/ConnectionMonitor.java index d378be5..2f96d25 100644 --- a/lib/src/main/java/com/trilead/ssh2/ConnectionMonitor.java +++ b/lib/src/main/java/com/trilead/ssh2/ConnectionMonitor.java @@ -1,34 +1,34 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>ConnectionMonitor</code> is used to get notified when the
- * underlying socket of a connection is closed.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ConnectionMonitor.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface ConnectionMonitor
-{
- /**
- * This method is called after the connection's underlying
- * socket has been closed. E.g., due to the {@link Connection#close()} request of the
- * user, if the peer closed the connection, due to a fatal error during connect()
- * (also if the socket cannot be established) or if a fatal error occured on
- * an established connection.
- * <p>
- * This is an experimental feature.
- * <p>
- * You MUST NOT make any assumption about the thread that invokes this method.
- * <p>
- * <b>Please note: if the connection is not connected (e.g., there was no successful
- * connect() call), then the invocation of {@link Connection#close()} will NOT trigger
- * this method.</b>
- *
- * @see Connection#addConnectionMonitor(ConnectionMonitor)
- *
- * @param reason Includes an indication why the socket was closed.
- */
- public void connectionLost(Throwable reason);
+ +package com.trilead.ssh2; + +/** + * A <code>ConnectionMonitor</code> is used to get notified when the + * underlying socket of a connection is closed. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ConnectionMonitor.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public interface ConnectionMonitor +{ + /** + * This method is called after the connection's underlying + * socket has been closed. E.g., due to the {@link Connection#close()} request of the + * user, if the peer closed the connection, due to a fatal error during connect() + * (also if the socket cannot be established) or if a fatal error occured on + * an established connection. + * <p> + * This is an experimental feature. + * <p> + * You MUST NOT make any assumption about the thread that invokes this method. + * <p> + * <b>Please note: if the connection is not connected (e.g., there was no successful + * connect() call), then the invocation of {@link Connection#close()} will NOT trigger + * this method.</b> + * + * @see Connection#addConnectionMonitor(ConnectionMonitor) + * + * @param reason Includes an indication why the socket was closed. + */ + public void connectionLost(Throwable reason); }
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/DHGexParameters.java b/lib/src/main/java/com/trilead/ssh2/DHGexParameters.java index 94afb30..a2945ee 100644 --- a/lib/src/main/java/com/trilead/ssh2/DHGexParameters.java +++ b/lib/src/main/java/com/trilead/ssh2/DHGexParameters.java @@ -1,121 +1,121 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>DHGexParameters</code> object can be used to specify parameters for
- * the diffie-hellman group exchange.
- * <p>
- * Depending on which constructor is used, either the use of a
- * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> or <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code>
- * can be forced.
- *
- * @see Connection#setDHGexParameters(DHGexParameters)
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DHGexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class DHGexParameters
-{
- private final int min_group_len;
- private final int pref_group_len;
- private final int max_group_len;
-
- private static final int MIN_ALLOWED = 1024;
- private static final int MAX_ALLOWED = 8192;
-
- /**
- * Same as calling {@link #DHGexParameters(int, int, int) DHGexParameters(1024, 1024, 4096)}.
- * This is also the default used by the Connection class.
- *
- */
- public DHGexParameters()
- {
- this(1024, 1024, 4096);
- }
-
- /**
- * This constructor can be used to force the sending of a
- * <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code> request.
- * Internally, the minimum and maximum group lengths will
- * be set to zero.
- *
- * @param pref_group_len has to be >= 1024 and <= 8192
- */
- public DHGexParameters(int pref_group_len)
- {
- if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED))
- throw new IllegalArgumentException("pref_group_len out of range!");
-
- this.pref_group_len = pref_group_len;
- this.min_group_len = 0;
- this.max_group_len = 0;
- }
-
- /**
- * This constructor can be used to force the sending of a
- * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> request.
- * <p>
- * Note: older OpenSSH servers don't understand this request, in which
- * case you should use the {@link #DHGexParameters(int)} constructor.
- * <p>
- * All values have to be >= 1024 and <= 8192. Furthermore,
- * min_group_len <= pref_group_len <= max_group_len.
- *
- * @param min_group_len
- * @param pref_group_len
- * @param max_group_len
- */
- public DHGexParameters(int min_group_len, int pref_group_len, int max_group_len)
- {
- if ((min_group_len < MIN_ALLOWED) || (min_group_len > MAX_ALLOWED))
- throw new IllegalArgumentException("min_group_len out of range!");
-
- if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED))
- throw new IllegalArgumentException("pref_group_len out of range!");
-
- if ((max_group_len < MIN_ALLOWED) || (max_group_len > MAX_ALLOWED))
- throw new IllegalArgumentException("max_group_len out of range!");
-
- if ((pref_group_len < min_group_len) || (pref_group_len > max_group_len))
- throw new IllegalArgumentException("pref_group_len is incompatible with min and max!");
-
- if (max_group_len < min_group_len)
- throw new IllegalArgumentException("max_group_len must not be smaller than min_group_len!");
-
- this.min_group_len = min_group_len;
- this.pref_group_len = pref_group_len;
- this.max_group_len = max_group_len;
- }
-
- /**
- * Get the maximum group length.
- *
- * @return the maximum group length, may be <code>zero</code> if
- * SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested
- */
- public int getMax_group_len()
- {
- return max_group_len;
- }
-
- /**
- * Get the minimum group length.
- *
- * @return minimum group length, may be <code>zero</code> if
- * SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested
- */
- public int getMin_group_len()
- {
- return min_group_len;
- }
-
- /**
- * Get the preferred group length.
- *
- * @return the preferred group length
- */
- public int getPref_group_len()
- {
- return pref_group_len;
- }
-}
+ +package com.trilead.ssh2; + +/** + * A <code>DHGexParameters</code> object can be used to specify parameters for + * the diffie-hellman group exchange. + * <p> + * Depending on which constructor is used, either the use of a + * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> or <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code> + * can be forced. + * + * @see Connection#setDHGexParameters(DHGexParameters) + * @author Christian Plattner, plattner@trilead.com + * @version $Id: DHGexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class DHGexParameters +{ + private final int min_group_len; + private final int pref_group_len; + private final int max_group_len; + + private static final int MIN_ALLOWED = 1024; + private static final int MAX_ALLOWED = 8192; + + /** + * Same as calling {@link #DHGexParameters(int, int, int) DHGexParameters(1024, 1024, 4096)}. + * This is also the default used by the Connection class. + * + */ + public DHGexParameters() + { + this(1024, 1024, 4096); + } + + /** + * This constructor can be used to force the sending of a + * <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code> request. + * Internally, the minimum and maximum group lengths will + * be set to zero. + * + * @param pref_group_len has to be >= 1024 and <= 8192 + */ + public DHGexParameters(int pref_group_len) + { + if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED)) + throw new IllegalArgumentException("pref_group_len out of range!"); + + this.pref_group_len = pref_group_len; + this.min_group_len = 0; + this.max_group_len = 0; + } + + /** + * This constructor can be used to force the sending of a + * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> request. + * <p> + * Note: older OpenSSH servers don't understand this request, in which + * case you should use the {@link #DHGexParameters(int)} constructor. + * <p> + * All values have to be >= 1024 and <= 8192. Furthermore, + * min_group_len <= pref_group_len <= max_group_len. + * + * @param min_group_len + * @param pref_group_len + * @param max_group_len + */ + public DHGexParameters(int min_group_len, int pref_group_len, int max_group_len) + { + if ((min_group_len < MIN_ALLOWED) || (min_group_len > MAX_ALLOWED)) + throw new IllegalArgumentException("min_group_len out of range!"); + + if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED)) + throw new IllegalArgumentException("pref_group_len out of range!"); + + if ((max_group_len < MIN_ALLOWED) || (max_group_len > MAX_ALLOWED)) + throw new IllegalArgumentException("max_group_len out of range!"); + + if ((pref_group_len < min_group_len) || (pref_group_len > max_group_len)) + throw new IllegalArgumentException("pref_group_len is incompatible with min and max!"); + + if (max_group_len < min_group_len) + throw new IllegalArgumentException("max_group_len must not be smaller than min_group_len!"); + + this.min_group_len = min_group_len; + this.pref_group_len = pref_group_len; + this.max_group_len = max_group_len; + } + + /** + * Get the maximum group length. + * + * @return the maximum group length, may be <code>zero</code> if + * SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested + */ + public int getMax_group_len() + { + return max_group_len; + } + + /** + * Get the minimum group length. + * + * @return minimum group length, may be <code>zero</code> if + * SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested + */ + public int getMin_group_len() + { + return min_group_len; + } + + /** + * Get the preferred group length. + * + * @return the preferred group length + */ + public int getPref_group_len() + { + return pref_group_len; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/DebugLogger.java b/lib/src/main/java/com/trilead/ssh2/DebugLogger.java index 731fa28..adf2c8e 100644 --- a/lib/src/main/java/com/trilead/ssh2/DebugLogger.java +++ b/lib/src/main/java/com/trilead/ssh2/DebugLogger.java @@ -1,23 +1,23 @@ -package com.trilead.ssh2;
-
-/**
- * An interface which needs to be implemented if you
- * want to capture debugging messages.
- *
- * @see Connection#enableDebugging(boolean, DebugLogger)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DebugLogger.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $
- */
-public interface DebugLogger
-{
-
-/**
- * Log a debug message.
- *
- * @param level 0-99, 99 is a the most verbose level
- * @param className the class that generated the message
- * @param message the debug message
- */
- public void log(int level, String className, String message);
-}
+package com.trilead.ssh2; + +/** + * An interface which needs to be implemented if you + * want to capture debugging messages. + * + * @see Connection#enableDebugging(boolean, DebugLogger) + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: DebugLogger.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $ + */ +public interface DebugLogger +{ + +/** + * Log a debug message. + * + * @param level 0-99, 99 is a the most verbose level + * @param className the class that generated the message + * @param message the debug message + */ + public void log(int level, String className, String message); +} diff --git a/lib/src/main/java/com/trilead/ssh2/HTTPProxyData.java b/lib/src/main/java/com/trilead/ssh2/HTTPProxyData.java index d99c28e..2edffe6 100644 --- a/lib/src/main/java/com/trilead/ssh2/HTTPProxyData.java +++ b/lib/src/main/java/com/trilead/ssh2/HTTPProxyData.java @@ -1,83 +1,83 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>HTTPProxyData</code> object is used to specify the needed connection data
- * to connect through a HTTP proxy.
- *
- * @see Connection#setProxyData(ProxyData)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HTTPProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class HTTPProxyData implements ProxyData
-{
- public final String proxyHost;
- public final int proxyPort;
- public final String proxyUser;
- public final String proxyPass;
- public final String[] requestHeaderLines;
-
- /**
- * Same as calling {@link #HTTPProxyData(String, int, String, String) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>)}
- *
- * @param proxyHost Proxy hostname.
- * @param proxyPort Proxy port.
- */
- public HTTPProxyData(String proxyHost, int proxyPort)
- {
- this(proxyHost, proxyPort, null, null);
- }
-
- /**
- * Same as calling {@link #HTTPProxyData(String, int, String, String, String[]) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>, <code>null</code>)}
- *
- * @param proxyHost Proxy hostname.
- * @param proxyPort Proxy port.
- * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed).
- * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed).
- */
- public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass)
- {
- this(proxyHost, proxyPort, proxyUser, proxyPass, null);
- }
-
- /**
- * Connection data for a HTTP proxy. It is possible to specify a username and password
- * if the proxy requires basic authentication. Also, additional request header lines can
- * be specified (e.g., "User-Agent: CERN-LineMode/2.15 libwww/2.17b3").
- * <p>
- * Please note: if you want to use basic authentication, then both <code>proxyUser</code>
- * and <code>proxyPass</code> must be non-null.
- * <p>
- * Here is an example:
- * <p>
- * <code>
- * new HTTPProxyData("192.168.1.1", "3128", "proxyuser", "secret", new String[] {"User-Agent: TrileadBasedClient/1.0", "X-My-Proxy-Option: something"});
- * </code>
- *
- * @param proxyHost Proxy hostname.
- * @param proxyPort Proxy port.
- * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed).
- * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed).
- * @param requestHeaderLines An array with additional request header lines (without end-of-line markers)
- * that have to be sent to the server. May be <code>null</code>.
- */
-
- public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass,
- String[] requestHeaderLines)
- {
- if (proxyHost == null)
- throw new IllegalArgumentException("proxyHost must be non-null");
-
- if (proxyPort < 0)
- throw new IllegalArgumentException("proxyPort must be non-negative");
-
- this.proxyHost = proxyHost;
- this.proxyPort = proxyPort;
- this.proxyUser = proxyUser;
- this.proxyPass = proxyPass;
- this.requestHeaderLines = requestHeaderLines;
- }
-}
+ +package com.trilead.ssh2; + +/** + * A <code>HTTPProxyData</code> object is used to specify the needed connection data + * to connect through a HTTP proxy. + * + * @see Connection#setProxyData(ProxyData) + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: HTTPProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class HTTPProxyData implements ProxyData +{ + public final String proxyHost; + public final int proxyPort; + public final String proxyUser; + public final String proxyPass; + public final String[] requestHeaderLines; + + /** + * Same as calling {@link #HTTPProxyData(String, int, String, String) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>)} + * + * @param proxyHost Proxy hostname. + * @param proxyPort Proxy port. + */ + public HTTPProxyData(String proxyHost, int proxyPort) + { + this(proxyHost, proxyPort, null, null); + } + + /** + * Same as calling {@link #HTTPProxyData(String, int, String, String, String[]) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>, <code>null</code>)} + * + * @param proxyHost Proxy hostname. + * @param proxyPort Proxy port. + * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed). + * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed). + */ + public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass) + { + this(proxyHost, proxyPort, proxyUser, proxyPass, null); + } + + /** + * Connection data for a HTTP proxy. It is possible to specify a username and password + * if the proxy requires basic authentication. Also, additional request header lines can + * be specified (e.g., "User-Agent: CERN-LineMode/2.15 libwww/2.17b3"). + * <p> + * Please note: if you want to use basic authentication, then both <code>proxyUser</code> + * and <code>proxyPass</code> must be non-null. + * <p> + * Here is an example: + * <p> + * <code> + * new HTTPProxyData("192.168.1.1", "3128", "proxyuser", "secret", new String[] {"User-Agent: TrileadBasedClient/1.0", "X-My-Proxy-Option: something"}); + * </code> + * + * @param proxyHost Proxy hostname. + * @param proxyPort Proxy port. + * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed). + * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed). + * @param requestHeaderLines An array with additional request header lines (without end-of-line markers) + * that have to be sent to the server. May be <code>null</code>. + */ + + public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass, + String[] requestHeaderLines) + { + if (proxyHost == null) + throw new IllegalArgumentException("proxyHost must be non-null"); + + if (proxyPort < 0) + throw new IllegalArgumentException("proxyPort must be non-negative"); + + this.proxyHost = proxyHost; + this.proxyPort = proxyPort; + this.proxyUser = proxyUser; + this.proxyPass = proxyPass; + this.requestHeaderLines = requestHeaderLines; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/HTTPProxyException.java b/lib/src/main/java/com/trilead/ssh2/HTTPProxyException.java index 3447be2..4687dd1 100644 --- a/lib/src/main/java/com/trilead/ssh2/HTTPProxyException.java +++ b/lib/src/main/java/com/trilead/ssh2/HTTPProxyException.java @@ -1,29 +1,29 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-
-/**
- * May be thrown upon connect() if a HTTP proxy is being used.
- *
- * @see Connection#connect()
- * @see Connection#setProxyData(ProxyData)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HTTPProxyException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class HTTPProxyException extends IOException
-{
- private static final long serialVersionUID = 2241537397104426186L;
-
- public final String httpResponse;
- public final int httpErrorCode;
-
- public HTTPProxyException(String httpResponse, int httpErrorCode)
- {
- super("HTTP Proxy Error (" + httpErrorCode + " " + httpResponse + ")");
- this.httpResponse = httpResponse;
- this.httpErrorCode = httpErrorCode;
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; + +/** + * May be thrown upon connect() if a HTTP proxy is being used. + * + * @see Connection#connect() + * @see Connection#setProxyData(ProxyData) + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: HTTPProxyException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class HTTPProxyException extends IOException +{ + private static final long serialVersionUID = 2241537397104426186L; + + public final String httpResponse; + public final int httpErrorCode; + + public HTTPProxyException(String httpResponse, int httpErrorCode) + { + super("HTTP Proxy Error (" + httpErrorCode + " " + httpResponse + ")"); + this.httpResponse = httpResponse; + this.httpErrorCode = httpErrorCode; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/InteractiveCallback.java b/lib/src/main/java/com/trilead/ssh2/InteractiveCallback.java index b81bb9f..3b83417 100644 --- a/lib/src/main/java/com/trilead/ssh2/InteractiveCallback.java +++ b/lib/src/main/java/com/trilead/ssh2/InteractiveCallback.java @@ -1,55 +1,55 @@ -
-package com.trilead.ssh2;
-
-/**
- * An <code>InteractiveCallback</code> is used to respond to challenges sent
- * by the server if authentication mode "keyboard-interactive" is selected.
- *
- * @see Connection#authenticateWithKeyboardInteractive(String,
- * String[], InteractiveCallback)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: InteractiveCallback.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface InteractiveCallback
-{
- /**
- * This callback interface is used during a "keyboard-interactive"
- * authentication. Every time the server sends a set of challenges (however,
- * most often just one challenge at a time), this callback function will be
- * called to give your application a chance to talk to the user and to
- * determine the response(s).
- * <p>
- * Some copy-paste information from the standard: a command line interface
- * (CLI) client SHOULD print the name and instruction (if non-empty), adding
- * newlines. Then for each prompt in turn, the client SHOULD display the
- * prompt and read the user input. The name and instruction fields MAY be
- * empty strings, the client MUST be prepared to handle this correctly. The
- * prompt field(s) MUST NOT be empty strings.
- * <p>
- * Please refer to draft-ietf-secsh-auth-kbdinteract-XX.txt for the details.
- * <p>
- * Note: clients SHOULD use control character filtering as discussed in
- * RFC4251 to avoid attacks by including
- * terminal control characters in the fields to be displayed.
- *
- * @param name
- * the name String sent by the server.
- * @param instruction
- * the instruction String sent by the server.
- * @param numPrompts
- * number of prompts - may be zero (in this case, you should just
- * return a String array of length zero).
- * @param prompt
- * an array (length <code>numPrompts</code>) of Strings
- * @param echo
- * an array (length <code>numPrompts</code>) of booleans. For
- * each prompt, the corresponding echo field indicates whether or
- * not the user input should be echoed as characters are typed.
- * @return an array of reponses - the array size must match the parameter
- * <code>numPrompts</code>.
- */
- public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo)
- throws Exception;
-}
+ +package com.trilead.ssh2; + +/** + * An <code>InteractiveCallback</code> is used to respond to challenges sent + * by the server if authentication mode "keyboard-interactive" is selected. + * + * @see Connection#authenticateWithKeyboardInteractive(String, + * String[], InteractiveCallback) + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: InteractiveCallback.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public interface InteractiveCallback +{ + /** + * This callback interface is used during a "keyboard-interactive" + * authentication. Every time the server sends a set of challenges (however, + * most often just one challenge at a time), this callback function will be + * called to give your application a chance to talk to the user and to + * determine the response(s). + * <p> + * Some copy-paste information from the standard: a command line interface + * (CLI) client SHOULD print the name and instruction (if non-empty), adding + * newlines. Then for each prompt in turn, the client SHOULD display the + * prompt and read the user input. The name and instruction fields MAY be + * empty strings, the client MUST be prepared to handle this correctly. The + * prompt field(s) MUST NOT be empty strings. + * <p> + * Please refer to draft-ietf-secsh-auth-kbdinteract-XX.txt for the details. + * <p> + * Note: clients SHOULD use control character filtering as discussed in + * RFC4251 to avoid attacks by including + * terminal control characters in the fields to be displayed. + * + * @param name + * the name String sent by the server. + * @param instruction + * the instruction String sent by the server. + * @param numPrompts + * number of prompts - may be zero (in this case, you should just + * return a String array of length zero). + * @param prompt + * an array (length <code>numPrompts</code>) of Strings + * @param echo + * an array (length <code>numPrompts</code>) of booleans. For + * each prompt, the corresponding echo field indicates whether or + * not the user input should be echoed as characters are typed. + * @return an array of reponses - the array size must match the parameter + * <code>numPrompts</code>. + */ + public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo) + throws Exception; +} diff --git a/lib/src/main/java/com/trilead/ssh2/KnownHosts.java b/lib/src/main/java/com/trilead/ssh2/KnownHosts.java index 3fba4da..ec022ff 100644 --- a/lib/src/main/java/com/trilead/ssh2/KnownHosts.java +++ b/lib/src/main/java/com/trilead/ssh2/KnownHosts.java @@ -1,844 +1,844 @@ -
-package com.trilead.ssh2;
-
-import java.io.BufferedReader;
-import java.io.CharArrayReader;
-import java.io.CharArrayWriter;
-import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-import java.io.UnsupportedEncodingException;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.security.InvalidKeyException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.security.PublicKey;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.Locale;
-import java.util.Vector;
-
-import javax.crypto.Mac;
-import javax.crypto.spec.SecretKeySpec;
-
-import com.trilead.ssh2.crypto.Base64;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-
-
-/**
- * The <code>KnownHosts</code> class is a handy tool to verify received server hostkeys
- * based on the information in <code>known_hosts</code> files (the ones used by OpenSSH).
- * <p>
- * It offers basically an in-memory database for known_hosts entries, as well as some
- * helper functions. Entries from a <code>known_hosts</code> file can be loaded at construction time.
- * It is also possible to add more keys later (e.g., one can parse different
- * <code>known_hosts<code> files).
- * <p>
- * It is a thread safe implementation, therefore, you need only to instantiate one
- * <code>KnownHosts</code> for your whole application.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KnownHosts.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class KnownHosts
-{
- public static final int HOSTKEY_IS_OK = 0;
- public static final int HOSTKEY_IS_NEW = 1;
- public static final int HOSTKEY_HAS_CHANGED = 2;
-
- private class KnownHostsEntry
- {
- String[] patterns;
- PublicKey key;
-
- KnownHostsEntry(String[] patterns, PublicKey key)
- {
- this.patterns = patterns;
- this.key = key;
- }
- }
-
- private LinkedList<KnownHostsEntry> publicKeys = new LinkedList<KnownHostsEntry>();
-
- public KnownHosts()
- {
- }
-
- public KnownHosts(char[] knownHostsData) throws IOException
- {
- initialize(knownHostsData);
- }
-
- public KnownHosts(File knownHosts) throws IOException
- {
- initialize(knownHosts);
- }
-
- /**
- * Adds a single public key entry to the database. Note: this will NOT add the public key
- * to any physical file (e.g., "~/.ssh/known_hosts") - use <code>addHostkeyToFile()</code> for that purpose.
- * This method is designed to be used in a {@link ServerHostKeyVerifier}.
- *
- * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
- * OpenSSH sshd man page for a description of the pattern matching algorithm.
- * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
- * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
- * @throws IOException
- */
- public void addHostkey(String hostnames[], String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException
- {
- if (hostnames == null)
- throw new IllegalArgumentException("hostnames may not be null");
-
- if ("ssh-rsa".equals(serverHostKeyAlgorithm))
- {
- RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
-
- synchronized (publicKeys)
- {
- publicKeys.add(new KnownHostsEntry(hostnames, rpk));
- }
- }
- else if ("ssh-dss".equals(serverHostKeyAlgorithm))
- {
- DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
-
- synchronized (publicKeys)
- {
- publicKeys.add(new KnownHostsEntry(hostnames, dpk));
- }
- }
- else if (serverHostKeyAlgorithm.startsWith(ECDSASHA2Verify.ECDSA_SHA2_PREFIX))
- {
- ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
-
- synchronized (publicKeys) {
- publicKeys.add(new KnownHostsEntry(hostnames, epk));
- }
- }
- else
- throw new IOException("Unknwon host key type (" + serverHostKeyAlgorithm + ")");
- }
-
- /**
- * Parses the given known_hosts data and adds entries to the database.
- *
- * @param knownHostsData
- * @throws IOException
- */
- public void addHostkeys(char[] knownHostsData) throws IOException
- {
- initialize(knownHostsData);
- }
-
- /**
- * Parses the given known_hosts file and adds entries to the database.
- *
- * @param knownHosts
- * @throws IOException
- */
- public void addHostkeys(File knownHosts) throws IOException
- {
- initialize(knownHosts);
- }
-
- /**
- * Generate the hashed representation of the given hostname. Useful for adding entries
- * with hashed hostnames to a known_hosts file. (see -H option of OpenSSH key-gen).
- *
- * @param hostname
- * @return the hashed representation, e.g., "|1|cDhrv7zwEUV3k71CEPHnhHZezhA=|Xo+2y6rUXo2OIWRAYhBOIijbJMA="
- */
- public static final String createHashedHostname(String hostname)
- {
- MessageDigest sha1;
- try {
- sha1 = MessageDigest.getInstance("SHA1");
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException("VM doesn't support SHA1", e);
- }
-
- byte[] salt = new byte[sha1.getDigestLength()];
-
- new SecureRandom().nextBytes(salt);
-
- byte[] hash = hmacSha1Hash(salt, hostname);
-
- String base64_salt = new String(Base64.encode(salt));
- String base64_hash = new String(Base64.encode(hash));
-
- return new String("|1|" + base64_salt + "|" + base64_hash);
- }
-
- private static final byte[] hmacSha1Hash(byte[] salt, String hostname)
- {
- Mac hmac;
- try {
- hmac = Mac.getInstance("HmacSHA1");
- if (salt.length != hmac.getMacLength())
- throw new IllegalArgumentException("Salt has wrong length (" + salt.length + ")");
- hmac.init(new SecretKeySpec(salt, "HmacSHA1"));
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException("Unable to HMAC-SHA1", e);
- } catch (InvalidKeyException e) {
- throw new RuntimeException("Unable to create SecretKey", e);
- }
-
- try
- {
- hmac.update(hostname.getBytes("ISO-8859-1"));
- }catch(UnsupportedEncodingException ignore)
- {
- /* Actually, ISO-8859-1 is supported by all correct
- * Java implementations. But... you never know. */
- hmac.update(hostname.getBytes());
- }
-
- return hmac.doFinal();
- }
-
- private final boolean checkHashed(String entry, String hostname)
- {
- if (entry.startsWith("|1|") == false)
- return false;
-
- int delim_idx = entry.indexOf('|', 3);
-
- if (delim_idx == -1)
- return false;
-
- String salt_base64 = entry.substring(3, delim_idx);
- String hash_base64 = entry.substring(delim_idx + 1);
-
- byte[] salt = null;
- byte[] hash = null;
-
- try
- {
- salt = Base64.decode(salt_base64.toCharArray());
- hash = Base64.decode(hash_base64.toCharArray());
- }
- catch (IOException e)
- {
- return false;
- }
-
- try {
- MessageDigest sha1 = MessageDigest.getInstance("SHA1");
- if (salt.length != sha1.getDigestLength())
- return false;
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException("VM does not support SHA1", e);
- }
-
- byte[] dig = hmacSha1Hash(salt, hostname);
-
- for (int i = 0; i < dig.length; i++)
- if (dig[i] != hash[i])
- return false;
-
- return true;
- }
-
- private int checkKey(String remoteHostname, PublicKey remoteKey)
- {
- int result = HOSTKEY_IS_NEW;
-
- synchronized (publicKeys)
- {
- Iterator<KnownHostsEntry> i = publicKeys.iterator();
-
- while (i.hasNext())
- {
- KnownHostsEntry ke = i.next();
-
- if (hostnameMatches(ke.patterns, remoteHostname) == false)
- continue;
-
- boolean res = matchKeys(ke.key, remoteKey);
-
- if (res == true)
- return HOSTKEY_IS_OK;
-
- result = HOSTKEY_HAS_CHANGED;
- }
- }
- return result;
- }
-
- private Vector<PublicKey> getAllKeys(String hostname)
- {
- Vector<PublicKey> keys = new Vector<PublicKey>();
-
- synchronized (publicKeys)
- {
- Iterator<KnownHostsEntry> i = publicKeys.iterator();
-
- while (i.hasNext())
- {
- KnownHostsEntry ke = i.next();
-
- if (hostnameMatches(ke.patterns, hostname) == false)
- continue;
-
- keys.addElement(ke.key);
- }
- }
-
- return keys;
- }
-
- /**
- * Try to find the preferred order of hostkey algorithms for the given hostname.
- * Based on the type of hostkey that is present in the internal database
- * (i.e., either <code>ssh-rsa</code> or <code>ssh-dss</code>)
- * an ordered list of hostkey algorithms is returned which can be passed
- * to <code>Connection.setServerHostKeyAlgorithms</code>.
- *
- * @param hostname
- * @return <code>null</code> if no key for the given hostname is present or
- * there are keys of multiple types present for the given hostname. Otherwise,
- * an array with hostkey algorithms is returned (i.e., an array of length 2).
- */
- public String[] getPreferredServerHostkeyAlgorithmOrder(String hostname)
- {
- String[] algos = recommendHostkeyAlgorithms(hostname);
-
- if (algos != null)
- return algos;
-
- InetAddress[] ipAdresses = null;
-
- try
- {
- ipAdresses = InetAddress.getAllByName(hostname);
- }
- catch (UnknownHostException e)
- {
- return null;
- }
-
- for (int i = 0; i < ipAdresses.length; i++)
- {
- algos = recommendHostkeyAlgorithms(ipAdresses[i].getHostAddress());
-
- if (algos != null)
- return algos;
- }
-
- return null;
- }
-
- private final boolean hostnameMatches(String[] hostpatterns, String hostname)
- {
- boolean isMatch = false;
- boolean negate = false;
-
- hostname = hostname.toLowerCase(Locale.US);
-
- for (int k = 0; k < hostpatterns.length; k++)
- {
- if (hostpatterns[k] == null)
- continue;
-
- String pattern = null;
-
- /* In contrast to OpenSSH we also allow negated hash entries (as well as hashed
- * entries in lines with multiple entries).
- */
-
- if ((hostpatterns[k].length() > 0) && (hostpatterns[k].charAt(0) == '!'))
- {
- pattern = hostpatterns[k].substring(1);
- negate = true;
- }
- else
- {
- pattern = hostpatterns[k];
- negate = false;
- }
-
- /* Optimize, no need to check this entry */
-
- if ((isMatch) && (negate == false))
- continue;
-
- /* Now compare */
-
- if (pattern.charAt(0) == '|')
- {
- if (checkHashed(pattern, hostname))
- {
- if (negate)
- return false;
- isMatch = true;
- }
- }
- else
- {
- pattern = pattern.toLowerCase(Locale.US);
-
- if ((pattern.indexOf('?') != -1) || (pattern.indexOf('*') != -1))
- {
- if (pseudoRegex(pattern.toCharArray(), 0, hostname.toCharArray(), 0))
- {
- if (negate)
- return false;
- isMatch = true;
- }
- }
- else if (pattern.compareTo(hostname) == 0)
- {
- if (negate)
- return false;
- isMatch = true;
- }
- }
- }
-
- return isMatch;
- }
-
- private void initialize(char[] knownHostsData) throws IOException
- {
- BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData));
-
- while (true)
- {
- String line = br.readLine();
-
- if (line == null)
- break;
-
- line = line.trim();
-
- if (line.startsWith("#"))
- continue;
-
- String[] arr = line.split(" ");
-
- if (arr.length >= 3)
- {
- if ((arr[1].compareTo("ssh-rsa") == 0) || (arr[1].compareTo("ssh-dss") == 0))
- {
- String[] hostnames = arr[0].split(",");
-
- byte[] msg = Base64.decode(arr[2].toCharArray());
-
- addHostkey(hostnames, arr[1], msg);
- }
- }
- }
- }
-
- private void initialize(File knownHosts) throws IOException
- {
- char[] buff = new char[512];
-
- CharArrayWriter cw = new CharArrayWriter();
-
- knownHosts.createNewFile();
-
- FileReader fr = new FileReader(knownHosts);
-
- while (true)
- {
- int len = fr.read(buff);
- if (len < 0)
- break;
- cw.write(buff, 0, len);
- }
-
- fr.close();
-
- initialize(cw.toCharArray());
- }
-
- private final boolean matchKeys(PublicKey key1, PublicKey key2)
- {
- return key1.equals(key2);
- }
-
- private final boolean pseudoRegex(char[] pattern, int i, char[] match, int j)
- {
- /* This matching logic is equivalent to the one present in OpenSSH 4.1 */
-
- while (true)
- {
- /* Are we at the end of the pattern? */
-
- if (pattern.length == i)
- return (match.length == j);
-
- if (pattern[i] == '*')
- {
- i++;
-
- if (pattern.length == i)
- return true;
-
- if ((pattern[i] != '*') && (pattern[i] != '?'))
- {
- while (true)
- {
- if ((pattern[i] == match[j]) && pseudoRegex(pattern, i + 1, match, j + 1))
- return true;
- j++;
- if (match.length == j)
- return false;
- }
- }
-
- while (true)
- {
- if (pseudoRegex(pattern, i, match, j))
- return true;
- j++;
- if (match.length == j)
- return false;
- }
- }
-
- if (match.length == j)
- return false;
-
- if ((pattern[i] != '?') && (pattern[i] != match[j]))
- return false;
-
- i++;
- j++;
- }
- }
-
- private String[] recommendHostkeyAlgorithms(String hostname)
- {
- String preferredAlgo = null;
-
- Vector<PublicKey> keys = getAllKeys(hostname);
-
- for (int i = 0; i < keys.size(); i++)
- {
- String thisAlgo = null;
-
- if (keys.elementAt(i) instanceof RSAPublicKey)
- thisAlgo = "ssh-rsa";
- else if (keys.elementAt(i) instanceof DSAPublicKey)
- thisAlgo = "ssh-dss";
- else
- continue;
-
- if (preferredAlgo != null)
- {
- /* If we find different key types, then return null */
-
- if (preferredAlgo.compareTo(thisAlgo) != 0)
- return null;
-
- /* OK, we found the same algo again, optimize */
-
- continue;
- }
- }
-
- /* If we did not find anything that we know of, return null */
-
- if (preferredAlgo == null)
- return null;
-
- /* Now put the preferred algo to the start of the array.
- * You may ask yourself why we do it that way - basically, we could just
- * return only the preferred algorithm: since we have a saved key of that
- * type (sent earlier from the remote host), then that should work out.
- * However, imagine that the server is (for whatever reasons) not offering
- * that type of hostkey anymore (e.g., "ssh-rsa" was disabled and
- * now "ssh-dss" is being used). If we then do not let the server send us
- * a fresh key of the new type, then we shoot ourself into the foot:
- * the connection cannot be established and hence the user cannot decide
- * if he/she wants to accept the new key.
- */
-
- if (preferredAlgo.equals("ssh-rsa"))
- return new String[] { "ssh-rsa", "ssh-dss" };
-
- return new String[] { "ssh-dss", "ssh-rsa" };
- }
-
- /**
- * Checks the internal hostkey database for the given hostkey.
- * If no matching key can be found, then the hostname is resolved to an IP address
- * and the search is repeated using that IP address.
- *
- * @param hostname the server's hostname, will be matched with all hostname patterns
- * @param serverHostKeyAlgorithm type of hostkey, either <code>ssh-rsa</code> or <code>ssh-dss</code>
- * @param serverHostKey the key blob
- * @return <ul>
- * <li><code>HOSTKEY_IS_OK</code>: the given hostkey matches an entry for the given hostname</li>
- * <li><code>HOSTKEY_IS_NEW</code>: no entries found for this hostname and this type of hostkey</li>
- * <li><code>HOSTKEY_HAS_CHANGED</code>: hostname is known, but with another key of the same type
- * (man-in-the-middle attack?)</li>
- * </ul>
- * @throws IOException if the supplied key blob cannot be parsed or does not match the given hostkey type.
- */
- public int verifyHostkey(String hostname, String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException
- {
- PublicKey remoteKey = null;
-
- if ("ssh-rsa".equals(serverHostKeyAlgorithm))
- {
- remoteKey = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
- }
- else if ("ssh-dss".equals(serverHostKeyAlgorithm))
- {
- remoteKey = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
- }
- else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-"))
- {
- remoteKey = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
- }
- else
- throw new IllegalArgumentException("Unknown hostkey type " + serverHostKeyAlgorithm);
-
- int result = checkKey(hostname, remoteKey);
-
- if (result == HOSTKEY_IS_OK)
- return result;
-
- InetAddress[] ipAdresses = null;
-
- try
- {
- ipAdresses = InetAddress.getAllByName(hostname);
- }
- catch (UnknownHostException e)
- {
- return result;
- }
-
- for (int i = 0; i < ipAdresses.length; i++)
- {
- int newresult = checkKey(ipAdresses[i].getHostAddress(), remoteKey);
-
- if (newresult == HOSTKEY_IS_OK)
- return newresult;
-
- if (newresult == HOSTKEY_HAS_CHANGED)
- result = HOSTKEY_HAS_CHANGED;
- }
-
- return result;
- }
-
- /**
- * Adds a single public key entry to the a known_hosts file.
- * This method is designed to be used in a {@link ServerHostKeyVerifier}.
- *
- * @param knownHosts the file where the publickey entry will be appended.
- * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
- * OpenSSH sshd man page for a description of the pattern matching algorithm.
- * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
- * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
- * @throws IOException
- */
- public final static void addHostkeyToFile(File knownHosts, String[] hostnames, String serverHostKeyAlgorithm,
- byte[] serverHostKey) throws IOException
- {
- if ((hostnames == null) || (hostnames.length == 0))
- throw new IllegalArgumentException("Need at least one hostname specification");
-
- if ((serverHostKeyAlgorithm == null) || (serverHostKey == null))
- throw new IllegalArgumentException();
-
- CharArrayWriter writer = new CharArrayWriter();
-
- for (int i = 0; i < hostnames.length; i++)
- {
- if (i != 0)
- writer.write(',');
- writer.write(hostnames[i]);
- }
-
- writer.write(' ');
- writer.write(serverHostKeyAlgorithm);
- writer.write(' ');
- writer.write(Base64.encode(serverHostKey));
- writer.write("\n");
-
- char[] entry = writer.toCharArray();
-
- RandomAccessFile raf = new RandomAccessFile(knownHosts, "rw");
-
- long len = raf.length();
-
- if (len > 0)
- {
- raf.seek(len - 1);
- int last = raf.read();
- if (last != '\n')
- raf.write('\n');
- }
-
- raf.write(new String(entry).getBytes("ISO-8859-1"));
- raf.close();
- }
-
- /**
- * Generates a "raw" fingerprint of a hostkey.
- *
- * @param type either "md5" or "sha1"
- * @param keyType either "ssh-rsa" or "ssh-dss"
- * @param hostkey the hostkey
- * @return the raw fingerprint
- */
- static final private byte[] rawFingerPrint(String type, String keyType, byte[] hostkey)
- {
- MessageDigest dig = null;
-
- try {
- if ("md5".equals(type))
- {
- dig = MessageDigest.getInstance("MD5");
- }
- else if ("sha1".equals(type))
- {
- dig = MessageDigest.getInstance("SHA1");
- }
- else
- {
- throw new IllegalArgumentException("Unknown hash type " + type);
- }
- } catch (NoSuchAlgorithmException e) {
- throw new IllegalArgumentException("Unknown hash type " + type);
- }
-
- if (keyType.startsWith("ecdsa-sha2-"))
- {
- }
- else if ("ssh-rsa".equals(keyType))
- {
- }
- else if ("ssh-dss".equals(keyType))
- {
- }
- else
- throw new IllegalArgumentException("Unknown key type " + keyType);
-
- if (hostkey == null)
- throw new IllegalArgumentException("hostkey is null");
-
- dig.update(hostkey);
- return dig.digest();
- }
-
- /**
- * Convert a raw fingerprint to hex representation (XX:YY:ZZ...).
- * @param fingerprint raw fingerprint
- * @return the hex representation
- */
- static final private String rawToHexFingerprint(byte[] fingerprint)
- {
- final char[] alpha = "0123456789abcdef".toCharArray();
-
- StringBuffer sb = new StringBuffer();
-
- for (int i = 0; i < fingerprint.length; i++)
- {
- if (i != 0)
- sb.append(':');
- int b = fingerprint[i] & 0xff;
- sb.append(alpha[b >> 4]);
- sb.append(alpha[b & 15]);
- }
-
- return sb.toString();
- }
-
- /**
- * Convert a raw fingerprint to bubblebabble representation.
- * @param raw raw fingerprint
- * @return the bubblebabble representation
- */
- static final private String rawToBubblebabbleFingerprint(byte[] raw)
- {
- final char[] v = "aeiouy".toCharArray();
- final char[] c = "bcdfghklmnprstvzx".toCharArray();
-
- StringBuffer sb = new StringBuffer();
-
- int seed = 1;
-
- int rounds = (raw.length / 2) + 1;
-
- sb.append('x');
-
- for (int i = 0; i < rounds; i++)
- {
- if (((i + 1) < rounds) || ((raw.length) % 2 != 0))
- {
- sb.append(v[(((raw[2 * i] >> 6) & 3) + seed) % 6]);
- sb.append(c[(raw[2 * i] >> 2) & 15]);
- sb.append(v[((raw[2 * i] & 3) + (seed / 6)) % 6]);
-
- if ((i + 1) < rounds)
- {
- sb.append(c[(((raw[(2 * i) + 1])) >> 4) & 15]);
- sb.append('-');
- sb.append(c[(((raw[(2 * i) + 1]))) & 15]);
- // As long as seed >= 0, seed will be >= 0 afterwards
- seed = ((seed * 5) + (((raw[2 * i] & 0xff) * 7) + (raw[(2 * i) + 1] & 0xff))) % 36;
- }
- }
- else
- {
- sb.append(v[seed % 6]); // seed >= 0, therefore index positive
- sb.append('x');
- sb.append(v[seed / 6]);
- }
- }
-
- sb.append('x');
-
- return sb.toString();
- }
-
- /**
- * Convert a ssh2 key-blob into a human readable hex fingerprint.
- * Generated fingerprints are identical to those generated by OpenSSH.
- * <p>
- * Example fingerprint: d0:cb:76:19:99:5a:03:fc:73:10:70:93:f2:44:63:47.
-
- * @param keytype either "ssh-rsa" or "ssh-dss"
- * @param publickey key blob
- * @return Hex fingerprint
- */
- public final static String createHexFingerprint(String keytype, byte[] publickey)
- {
- byte[] raw = rawFingerPrint("md5", keytype, publickey);
- return rawToHexFingerprint(raw);
- }
-
- /**
- * Convert a ssh2 key-blob into a human readable bubblebabble fingerprint.
- * The used bubblebabble algorithm (taken from OpenSSH) generates fingerprints
- * that are easier to remember for humans.
- * <p>
- * Example fingerprint: xofoc-bubuz-cazin-zufyl-pivuk-biduk-tacib-pybur-gonar-hotat-lyxux.
- *
- * @param keytype either "ssh-rsa" or "ssh-dss"
- * @param publickey key data
- * @return Bubblebabble fingerprint
- */
- public final static String createBubblebabbleFingerprint(String keytype, byte[] publickey)
- {
- byte[] raw = rawFingerPrint("sha1", keytype, publickey);
- return rawToBubblebabbleFingerprint(raw);
- }
-}
+ +package com.trilead.ssh2; + +import java.io.BufferedReader; +import java.io.CharArrayReader; +import java.io.CharArrayWriter; +import java.io.File; +import java.io.FileReader; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.io.UnsupportedEncodingException; +import java.net.InetAddress; +import java.net.UnknownHostException; +import java.security.InvalidKeyException; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.security.PublicKey; +import java.security.SecureRandom; +import java.security.interfaces.DSAPublicKey; +import java.security.interfaces.ECPublicKey; +import java.security.interfaces.RSAPublicKey; +import java.util.Iterator; +import java.util.LinkedList; +import java.util.Locale; +import java.util.Vector; + +import javax.crypto.Mac; +import javax.crypto.spec.SecretKeySpec; + +import com.trilead.ssh2.crypto.Base64; +import com.trilead.ssh2.signature.DSASHA1Verify; +import com.trilead.ssh2.signature.ECDSASHA2Verify; +import com.trilead.ssh2.signature.RSASHA1Verify; + + +/** + * The <code>KnownHosts</code> class is a handy tool to verify received server hostkeys + * based on the information in <code>known_hosts</code> files (the ones used by OpenSSH). + * <p> + * It offers basically an in-memory database for known_hosts entries, as well as some + * helper functions. Entries from a <code>known_hosts</code> file can be loaded at construction time. + * It is also possible to add more keys later (e.g., one can parse different + * <code>known_hosts<code> files). + * <p> + * It is a thread safe implementation, therefore, you need only to instantiate one + * <code>KnownHosts</code> for your whole application. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: KnownHosts.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ + +public class KnownHosts +{ + public static final int HOSTKEY_IS_OK = 0; + public static final int HOSTKEY_IS_NEW = 1; + public static final int HOSTKEY_HAS_CHANGED = 2; + + private class KnownHostsEntry + { + String[] patterns; + PublicKey key; + + KnownHostsEntry(String[] patterns, PublicKey key) + { + this.patterns = patterns; + this.key = key; + } + } + + private LinkedList<KnownHostsEntry> publicKeys = new LinkedList<KnownHostsEntry>(); + + public KnownHosts() + { + } + + public KnownHosts(char[] knownHostsData) throws IOException + { + initialize(knownHostsData); + } + + public KnownHosts(File knownHosts) throws IOException + { + initialize(knownHosts); + } + + /** + * Adds a single public key entry to the database. Note: this will NOT add the public key + * to any physical file (e.g., "~/.ssh/known_hosts") - use <code>addHostkeyToFile()</code> for that purpose. + * This method is designed to be used in a {@link ServerHostKeyVerifier}. + * + * @param hostnames a list of hostname patterns - at least one most be specified. Check out the + * OpenSSH sshd man page for a description of the pattern matching algorithm. + * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}. + * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}. + * @throws IOException + */ + public void addHostkey(String hostnames[], String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException + { + if (hostnames == null) + throw new IllegalArgumentException("hostnames may not be null"); + + if ("ssh-rsa".equals(serverHostKeyAlgorithm)) + { + RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey); + + synchronized (publicKeys) + { + publicKeys.add(new KnownHostsEntry(hostnames, rpk)); + } + } + else if ("ssh-dss".equals(serverHostKeyAlgorithm)) + { + DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey); + + synchronized (publicKeys) + { + publicKeys.add(new KnownHostsEntry(hostnames, dpk)); + } + } + else if (serverHostKeyAlgorithm.startsWith(ECDSASHA2Verify.ECDSA_SHA2_PREFIX)) + { + ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey); + + synchronized (publicKeys) { + publicKeys.add(new KnownHostsEntry(hostnames, epk)); + } + } + else + throw new IOException("Unknwon host key type (" + serverHostKeyAlgorithm + ")"); + } + + /** + * Parses the given known_hosts data and adds entries to the database. + * + * @param knownHostsData + * @throws IOException + */ + public void addHostkeys(char[] knownHostsData) throws IOException + { + initialize(knownHostsData); + } + + /** + * Parses the given known_hosts file and adds entries to the database. + * + * @param knownHosts + * @throws IOException + */ + public void addHostkeys(File knownHosts) throws IOException + { + initialize(knownHosts); + } + + /** + * Generate the hashed representation of the given hostname. Useful for adding entries + * with hashed hostnames to a known_hosts file. (see -H option of OpenSSH key-gen). + * + * @param hostname + * @return the hashed representation, e.g., "|1|cDhrv7zwEUV3k71CEPHnhHZezhA=|Xo+2y6rUXo2OIWRAYhBOIijbJMA=" + */ + public static final String createHashedHostname(String hostname) + { + MessageDigest sha1; + try { + sha1 = MessageDigest.getInstance("SHA1"); + } catch (NoSuchAlgorithmException e) { + throw new RuntimeException("VM doesn't support SHA1", e); + } + + byte[] salt = new byte[sha1.getDigestLength()]; + + new SecureRandom().nextBytes(salt); + + byte[] hash = hmacSha1Hash(salt, hostname); + + String base64_salt = new String(Base64.encode(salt)); + String base64_hash = new String(Base64.encode(hash)); + + return new String("|1|" + base64_salt + "|" + base64_hash); + } + + private static final byte[] hmacSha1Hash(byte[] salt, String hostname) + { + Mac hmac; + try { + hmac = Mac.getInstance("HmacSHA1"); + if (salt.length != hmac.getMacLength()) + throw new IllegalArgumentException("Salt has wrong length (" + salt.length + ")"); + hmac.init(new SecretKeySpec(salt, "HmacSHA1")); + } catch (NoSuchAlgorithmException e) { + throw new RuntimeException("Unable to HMAC-SHA1", e); + } catch (InvalidKeyException e) { + throw new RuntimeException("Unable to create SecretKey", e); + } + + try + { + hmac.update(hostname.getBytes("ISO-8859-1")); + }catch(UnsupportedEncodingException ignore) + { + /* Actually, ISO-8859-1 is supported by all correct + * Java implementations. But... you never know. */ + hmac.update(hostname.getBytes()); + } + + return hmac.doFinal(); + } + + private final boolean checkHashed(String entry, String hostname) + { + if (entry.startsWith("|1|") == false) + return false; + + int delim_idx = entry.indexOf('|', 3); + + if (delim_idx == -1) + return false; + + String salt_base64 = entry.substring(3, delim_idx); + String hash_base64 = entry.substring(delim_idx + 1); + + byte[] salt = null; + byte[] hash = null; + + try + { + salt = Base64.decode(salt_base64.toCharArray()); + hash = Base64.decode(hash_base64.toCharArray()); + } + catch (IOException e) + { + return false; + } + + try { + MessageDigest sha1 = MessageDigest.getInstance("SHA1"); + if (salt.length != sha1.getDigestLength()) + return false; + } catch (NoSuchAlgorithmException e) { + throw new RuntimeException("VM does not support SHA1", e); + } + + byte[] dig = hmacSha1Hash(salt, hostname); + + for (int i = 0; i < dig.length; i++) + if (dig[i] != hash[i]) + return false; + + return true; + } + + private int checkKey(String remoteHostname, PublicKey remoteKey) + { + int result = HOSTKEY_IS_NEW; + + synchronized (publicKeys) + { + Iterator<KnownHostsEntry> i = publicKeys.iterator(); + + while (i.hasNext()) + { + KnownHostsEntry ke = i.next(); + + if (hostnameMatches(ke.patterns, remoteHostname) == false) + continue; + + boolean res = matchKeys(ke.key, remoteKey); + + if (res == true) + return HOSTKEY_IS_OK; + + result = HOSTKEY_HAS_CHANGED; + } + } + return result; + } + + private Vector<PublicKey> getAllKeys(String hostname) + { + Vector<PublicKey> keys = new Vector<PublicKey>(); + + synchronized (publicKeys) + { + Iterator<KnownHostsEntry> i = publicKeys.iterator(); + + while (i.hasNext()) + { + KnownHostsEntry ke = i.next(); + + if (hostnameMatches(ke.patterns, hostname) == false) + continue; + + keys.addElement(ke.key); + } + } + + return keys; + } + + /** + * Try to find the preferred order of hostkey algorithms for the given hostname. + * Based on the type of hostkey that is present in the internal database + * (i.e., either <code>ssh-rsa</code> or <code>ssh-dss</code>) + * an ordered list of hostkey algorithms is returned which can be passed + * to <code>Connection.setServerHostKeyAlgorithms</code>. + * + * @param hostname + * @return <code>null</code> if no key for the given hostname is present or + * there are keys of multiple types present for the given hostname. Otherwise, + * an array with hostkey algorithms is returned (i.e., an array of length 2). + */ + public String[] getPreferredServerHostkeyAlgorithmOrder(String hostname) + { + String[] algos = recommendHostkeyAlgorithms(hostname); + + if (algos != null) + return algos; + + InetAddress[] ipAdresses = null; + + try + { + ipAdresses = InetAddress.getAllByName(hostname); + } + catch (UnknownHostException e) + { + return null; + } + + for (int i = 0; i < ipAdresses.length; i++) + { + algos = recommendHostkeyAlgorithms(ipAdresses[i].getHostAddress()); + + if (algos != null) + return algos; + } + + return null; + } + + private final boolean hostnameMatches(String[] hostpatterns, String hostname) + { + boolean isMatch = false; + boolean negate = false; + + hostname = hostname.toLowerCase(Locale.US); + + for (int k = 0; k < hostpatterns.length; k++) + { + if (hostpatterns[k] == null) + continue; + + String pattern = null; + + /* In contrast to OpenSSH we also allow negated hash entries (as well as hashed + * entries in lines with multiple entries). + */ + + if ((hostpatterns[k].length() > 0) && (hostpatterns[k].charAt(0) == '!')) + { + pattern = hostpatterns[k].substring(1); + negate = true; + } + else + { + pattern = hostpatterns[k]; + negate = false; + } + + /* Optimize, no need to check this entry */ + + if ((isMatch) && (negate == false)) + continue; + + /* Now compare */ + + if (pattern.charAt(0) == '|') + { + if (checkHashed(pattern, hostname)) + { + if (negate) + return false; + isMatch = true; + } + } + else + { + pattern = pattern.toLowerCase(Locale.US); + + if ((pattern.indexOf('?') != -1) || (pattern.indexOf('*') != -1)) + { + if (pseudoRegex(pattern.toCharArray(), 0, hostname.toCharArray(), 0)) + { + if (negate) + return false; + isMatch = true; + } + } + else if (pattern.compareTo(hostname) == 0) + { + if (negate) + return false; + isMatch = true; + } + } + } + + return isMatch; + } + + private void initialize(char[] knownHostsData) throws IOException + { + BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData)); + + while (true) + { + String line = br.readLine(); + + if (line == null) + break; + + line = line.trim(); + + if (line.startsWith("#")) + continue; + + String[] arr = line.split(" "); + + if (arr.length >= 3) + { + if ((arr[1].compareTo("ssh-rsa") == 0) || (arr[1].compareTo("ssh-dss") == 0)) + { + String[] hostnames = arr[0].split(","); + + byte[] msg = Base64.decode(arr[2].toCharArray()); + + addHostkey(hostnames, arr[1], msg); + } + } + } + } + + private void initialize(File knownHosts) throws IOException + { + char[] buff = new char[512]; + + CharArrayWriter cw = new CharArrayWriter(); + + knownHosts.createNewFile(); + + FileReader fr = new FileReader(knownHosts); + + while (true) + { + int len = fr.read(buff); + if (len < 0) + break; + cw.write(buff, 0, len); + } + + fr.close(); + + initialize(cw.toCharArray()); + } + + private final boolean matchKeys(PublicKey key1, PublicKey key2) + { + return key1.equals(key2); + } + + private final boolean pseudoRegex(char[] pattern, int i, char[] match, int j) + { + /* This matching logic is equivalent to the one present in OpenSSH 4.1 */ + + while (true) + { + /* Are we at the end of the pattern? */ + + if (pattern.length == i) + return (match.length == j); + + if (pattern[i] == '*') + { + i++; + + if (pattern.length == i) + return true; + + if ((pattern[i] != '*') && (pattern[i] != '?')) + { + while (true) + { + if ((pattern[i] == match[j]) && pseudoRegex(pattern, i + 1, match, j + 1)) + return true; + j++; + if (match.length == j) + return false; + } + } + + while (true) + { + if (pseudoRegex(pattern, i, match, j)) + return true; + j++; + if (match.length == j) + return false; + } + } + + if (match.length == j) + return false; + + if ((pattern[i] != '?') && (pattern[i] != match[j])) + return false; + + i++; + j++; + } + } + + private String[] recommendHostkeyAlgorithms(String hostname) + { + String preferredAlgo = null; + + Vector<PublicKey> keys = getAllKeys(hostname); + + for (int i = 0; i < keys.size(); i++) + { + String thisAlgo = null; + + if (keys.elementAt(i) instanceof RSAPublicKey) + thisAlgo = "ssh-rsa"; + else if (keys.elementAt(i) instanceof DSAPublicKey) + thisAlgo = "ssh-dss"; + else + continue; + + if (preferredAlgo != null) + { + /* If we find different key types, then return null */ + + if (preferredAlgo.compareTo(thisAlgo) != 0) + return null; + + /* OK, we found the same algo again, optimize */ + + continue; + } + } + + /* If we did not find anything that we know of, return null */ + + if (preferredAlgo == null) + return null; + + /* Now put the preferred algo to the start of the array. + * You may ask yourself why we do it that way - basically, we could just + * return only the preferred algorithm: since we have a saved key of that + * type (sent earlier from the remote host), then that should work out. + * However, imagine that the server is (for whatever reasons) not offering + * that type of hostkey anymore (e.g., "ssh-rsa" was disabled and + * now "ssh-dss" is being used). If we then do not let the server send us + * a fresh key of the new type, then we shoot ourself into the foot: + * the connection cannot be established and hence the user cannot decide + * if he/she wants to accept the new key. + */ + + if (preferredAlgo.equals("ssh-rsa")) + return new String[] { "ssh-rsa", "ssh-dss" }; + + return new String[] { "ssh-dss", "ssh-rsa" }; + } + + /** + * Checks the internal hostkey database for the given hostkey. + * If no matching key can be found, then the hostname is resolved to an IP address + * and the search is repeated using that IP address. + * + * @param hostname the server's hostname, will be matched with all hostname patterns + * @param serverHostKeyAlgorithm type of hostkey, either <code>ssh-rsa</code> or <code>ssh-dss</code> + * @param serverHostKey the key blob + * @return <ul> + * <li><code>HOSTKEY_IS_OK</code>: the given hostkey matches an entry for the given hostname</li> + * <li><code>HOSTKEY_IS_NEW</code>: no entries found for this hostname and this type of hostkey</li> + * <li><code>HOSTKEY_HAS_CHANGED</code>: hostname is known, but with another key of the same type + * (man-in-the-middle attack?)</li> + * </ul> + * @throws IOException if the supplied key blob cannot be parsed or does not match the given hostkey type. + */ + public int verifyHostkey(String hostname, String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException + { + PublicKey remoteKey = null; + + if ("ssh-rsa".equals(serverHostKeyAlgorithm)) + { + remoteKey = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey); + } + else if ("ssh-dss".equals(serverHostKeyAlgorithm)) + { + remoteKey = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey); + } + else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-")) + { + remoteKey = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey); + } + else + throw new IllegalArgumentException("Unknown hostkey type " + serverHostKeyAlgorithm); + + int result = checkKey(hostname, remoteKey); + + if (result == HOSTKEY_IS_OK) + return result; + + InetAddress[] ipAdresses = null; + + try + { + ipAdresses = InetAddress.getAllByName(hostname); + } + catch (UnknownHostException e) + { + return result; + } + + for (int i = 0; i < ipAdresses.length; i++) + { + int newresult = checkKey(ipAdresses[i].getHostAddress(), remoteKey); + + if (newresult == HOSTKEY_IS_OK) + return newresult; + + if (newresult == HOSTKEY_HAS_CHANGED) + result = HOSTKEY_HAS_CHANGED; + } + + return result; + } + + /** + * Adds a single public key entry to the a known_hosts file. + * This method is designed to be used in a {@link ServerHostKeyVerifier}. + * + * @param knownHosts the file where the publickey entry will be appended. + * @param hostnames a list of hostname patterns - at least one most be specified. Check out the + * OpenSSH sshd man page for a description of the pattern matching algorithm. + * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}. + * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}. + * @throws IOException + */ + public final static void addHostkeyToFile(File knownHosts, String[] hostnames, String serverHostKeyAlgorithm, + byte[] serverHostKey) throws IOException + { + if ((hostnames == null) || (hostnames.length == 0)) + throw new IllegalArgumentException("Need at least one hostname specification"); + + if ((serverHostKeyAlgorithm == null) || (serverHostKey == null)) + throw new IllegalArgumentException(); + + CharArrayWriter writer = new CharArrayWriter(); + + for (int i = 0; i < hostnames.length; i++) + { + if (i != 0) + writer.write(','); + writer.write(hostnames[i]); + } + + writer.write(' '); + writer.write(serverHostKeyAlgorithm); + writer.write(' '); + writer.write(Base64.encode(serverHostKey)); + writer.write("\n"); + + char[] entry = writer.toCharArray(); + + RandomAccessFile raf = new RandomAccessFile(knownHosts, "rw"); + + long len = raf.length(); + + if (len > 0) + { + raf.seek(len - 1); + int last = raf.read(); + if (last != '\n') + raf.write('\n'); + } + + raf.write(new String(entry).getBytes("ISO-8859-1")); + raf.close(); + } + + /** + * Generates a "raw" fingerprint of a hostkey. + * + * @param type either "md5" or "sha1" + * @param keyType either "ssh-rsa" or "ssh-dss" + * @param hostkey the hostkey + * @return the raw fingerprint + */ + static final private byte[] rawFingerPrint(String type, String keyType, byte[] hostkey) + { + MessageDigest dig = null; + + try { + if ("md5".equals(type)) + { + dig = MessageDigest.getInstance("MD5"); + } + else if ("sha1".equals(type)) + { + dig = MessageDigest.getInstance("SHA1"); + } + else + { + throw new IllegalArgumentException("Unknown hash type " + type); + } + } catch (NoSuchAlgorithmException e) { + throw new IllegalArgumentException("Unknown hash type " + type); + } + + if (keyType.startsWith("ecdsa-sha2-")) + { + } + else if ("ssh-rsa".equals(keyType)) + { + } + else if ("ssh-dss".equals(keyType)) + { + } + else + throw new IllegalArgumentException("Unknown key type " + keyType); + + if (hostkey == null) + throw new IllegalArgumentException("hostkey is null"); + + dig.update(hostkey); + return dig.digest(); + } + + /** + * Convert a raw fingerprint to hex representation (XX:YY:ZZ...). + * @param fingerprint raw fingerprint + * @return the hex representation + */ + static final private String rawToHexFingerprint(byte[] fingerprint) + { + final char[] alpha = "0123456789abcdef".toCharArray(); + + StringBuffer sb = new StringBuffer(); + + for (int i = 0; i < fingerprint.length; i++) + { + if (i != 0) + sb.append(':'); + int b = fingerprint[i] & 0xff; + sb.append(alpha[b >> 4]); + sb.append(alpha[b & 15]); + } + + return sb.toString(); + } + + /** + * Convert a raw fingerprint to bubblebabble representation. + * @param raw raw fingerprint + * @return the bubblebabble representation + */ + static final private String rawToBubblebabbleFingerprint(byte[] raw) + { + final char[] v = "aeiouy".toCharArray(); + final char[] c = "bcdfghklmnprstvzx".toCharArray(); + + StringBuffer sb = new StringBuffer(); + + int seed = 1; + + int rounds = (raw.length / 2) + 1; + + sb.append('x'); + + for (int i = 0; i < rounds; i++) + { + if (((i + 1) < rounds) || ((raw.length) % 2 != 0)) + { + sb.append(v[(((raw[2 * i] >> 6) & 3) + seed) % 6]); + sb.append(c[(raw[2 * i] >> 2) & 15]); + sb.append(v[((raw[2 * i] & 3) + (seed / 6)) % 6]); + + if ((i + 1) < rounds) + { + sb.append(c[(((raw[(2 * i) + 1])) >> 4) & 15]); + sb.append('-'); + sb.append(c[(((raw[(2 * i) + 1]))) & 15]); + // As long as seed >= 0, seed will be >= 0 afterwards + seed = ((seed * 5) + (((raw[2 * i] & 0xff) * 7) + (raw[(2 * i) + 1] & 0xff))) % 36; + } + } + else + { + sb.append(v[seed % 6]); // seed >= 0, therefore index positive + sb.append('x'); + sb.append(v[seed / 6]); + } + } + + sb.append('x'); + + return sb.toString(); + } + + /** + * Convert a ssh2 key-blob into a human readable hex fingerprint. + * Generated fingerprints are identical to those generated by OpenSSH. + * <p> + * Example fingerprint: d0:cb:76:19:99:5a:03:fc:73:10:70:93:f2:44:63:47. + + * @param keytype either "ssh-rsa" or "ssh-dss" + * @param publickey key blob + * @return Hex fingerprint + */ + public final static String createHexFingerprint(String keytype, byte[] publickey) + { + byte[] raw = rawFingerPrint("md5", keytype, publickey); + return rawToHexFingerprint(raw); + } + + /** + * Convert a ssh2 key-blob into a human readable bubblebabble fingerprint. + * The used bubblebabble algorithm (taken from OpenSSH) generates fingerprints + * that are easier to remember for humans. + * <p> + * Example fingerprint: xofoc-bubuz-cazin-zufyl-pivuk-biduk-tacib-pybur-gonar-hotat-lyxux. + * + * @param keytype either "ssh-rsa" or "ssh-dss" + * @param publickey key data + * @return Bubblebabble fingerprint + */ + public final static String createBubblebabbleFingerprint(String keytype, byte[] publickey) + { + byte[] raw = rawFingerPrint("sha1", keytype, publickey); + return rawToBubblebabbleFingerprint(raw); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/LocalPortForwarder.java b/lib/src/main/java/com/trilead/ssh2/LocalPortForwarder.java index c3183cb..96fa082 100644 --- a/lib/src/main/java/com/trilead/ssh2/LocalPortForwarder.java +++ b/lib/src/main/java/com/trilead/ssh2/LocalPortForwarder.java @@ -1,63 +1,63 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.LocalAcceptThread;
-
-
-/**
- * A <code>LocalPortForwarder</code> forwards TCP/IP connections to a local
- * port via the secure tunnel to another host (which may or may not be identical
- * to the remote SSH-2 server). Checkout {@link Connection#createLocalPortForwarder(int, String, int)}
- * on how to create one.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalPortForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalPortForwarder
-{
- ChannelManager cm;
-
- String host_to_connect;
-
- int port_to_connect;
-
- LocalAcceptThread lat;
-
- LocalPortForwarder(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect)
- throws IOException
- {
- this.cm = cm;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
-
- lat = new LocalAcceptThread(cm, local_port, host_to_connect, port_to_connect);
- lat.setDaemon(true);
- lat.start();
- }
-
- LocalPortForwarder(ChannelManager cm, InetSocketAddress addr, String host_to_connect, int port_to_connect)
- throws IOException
- {
- this.cm = cm;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
-
- lat = new LocalAcceptThread(cm, addr, host_to_connect, port_to_connect);
- lat.setDaemon(true);
- lat.start();
- }
-
- /**
- * Stop TCP/IP forwarding of newly arriving connections.
- *
- * @throws IOException
- */
- public void close() throws IOException
- {
- lat.stopWorking();
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; +import java.net.InetSocketAddress; + +import com.trilead.ssh2.channel.ChannelManager; +import com.trilead.ssh2.channel.LocalAcceptThread; + + +/** + * A <code>LocalPortForwarder</code> forwards TCP/IP connections to a local + * port via the secure tunnel to another host (which may or may not be identical + * to the remote SSH-2 server). Checkout {@link Connection#createLocalPortForwarder(int, String, int)} + * on how to create one. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: LocalPortForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class LocalPortForwarder +{ + ChannelManager cm; + + String host_to_connect; + + int port_to_connect; + + LocalAcceptThread lat; + + LocalPortForwarder(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect) + throws IOException + { + this.cm = cm; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + + lat = new LocalAcceptThread(cm, local_port, host_to_connect, port_to_connect); + lat.setDaemon(true); + lat.start(); + } + + LocalPortForwarder(ChannelManager cm, InetSocketAddress addr, String host_to_connect, int port_to_connect) + throws IOException + { + this.cm = cm; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + + lat = new LocalAcceptThread(cm, addr, host_to_connect, port_to_connect); + lat.setDaemon(true); + lat.start(); + } + + /** + * Stop TCP/IP forwarding of newly arriving connections. + * + * @throws IOException + */ + public void close() throws IOException + { + lat.stopWorking(); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java b/lib/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java index a841976..7899367 100644 --- a/lib/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java +++ b/lib/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java @@ -1,78 +1,78 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-import com.trilead.ssh2.channel.Channel;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.LocalAcceptThread;
-
-
-/**
- * A <code>LocalStreamForwarder</code> forwards an Input- and Outputstream
- * pair via the secure tunnel to another host (which may or may not be identical
- * to the remote SSH-2 server).
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalStreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalStreamForwarder
-{
- ChannelManager cm;
-
- String host_to_connect;
- int port_to_connect;
- LocalAcceptThread lat;
-
- Channel cn;
-
- LocalStreamForwarder(ChannelManager cm, String host_to_connect, int port_to_connect) throws IOException
- {
- this.cm = cm;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
-
- cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, "127.0.0.1", 0);
- }
-
- /**
- * @return An <code>InputStream</code> object.
- * @throws IOException
- */
- public InputStream getInputStream() throws IOException
- {
- return cn.getStdoutStream();
- }
-
- /**
- * Get the OutputStream. Please be aware that the implementation MAY use an
- * internal buffer. To make sure that the buffered data is sent over the
- * tunnel, you have to call the <code>flush</code> method of the
- * <code>OutputStream</code>. To signal EOF, please use the
- * <code>close</code> method of the <code>OutputStream</code>.
- *
- * @return An <code>OutputStream</code> object.
- * @throws IOException
- */
- public OutputStream getOutputStream() throws IOException
- {
- return cn.getStdinStream();
- }
-
- /**
- * Close the underlying SSH forwarding channel and free up resources.
- * You can also use this method to force the shutdown of the underlying
- * forwarding channel. Pending output (OutputStream not flushed) will NOT
- * be sent. Pending input (InputStream) can still be read. If the shutdown
- * operation is already in progress (initiated from either side), then this
- * call is a no-op.
- *
- * @throws IOException
- */
- public void close() throws IOException
- {
- cm.closeChannel(cn, "Closed due to user request.", true);
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; + +import com.trilead.ssh2.channel.Channel; +import com.trilead.ssh2.channel.ChannelManager; +import com.trilead.ssh2.channel.LocalAcceptThread; + + +/** + * A <code>LocalStreamForwarder</code> forwards an Input- and Outputstream + * pair via the secure tunnel to another host (which may or may not be identical + * to the remote SSH-2 server). + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: LocalStreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class LocalStreamForwarder +{ + ChannelManager cm; + + String host_to_connect; + int port_to_connect; + LocalAcceptThread lat; + + Channel cn; + + LocalStreamForwarder(ChannelManager cm, String host_to_connect, int port_to_connect) throws IOException + { + this.cm = cm; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + + cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, "127.0.0.1", 0); + } + + /** + * @return An <code>InputStream</code> object. + * @throws IOException + */ + public InputStream getInputStream() throws IOException + { + return cn.getStdoutStream(); + } + + /** + * Get the OutputStream. Please be aware that the implementation MAY use an + * internal buffer. To make sure that the buffered data is sent over the + * tunnel, you have to call the <code>flush</code> method of the + * <code>OutputStream</code>. To signal EOF, please use the + * <code>close</code> method of the <code>OutputStream</code>. + * + * @return An <code>OutputStream</code> object. + * @throws IOException + */ + public OutputStream getOutputStream() throws IOException + { + return cn.getStdinStream(); + } + + /** + * Close the underlying SSH forwarding channel and free up resources. + * You can also use this method to force the shutdown of the underlying + * forwarding channel. Pending output (OutputStream not flushed) will NOT + * be sent. Pending input (InputStream) can still be read. If the shutdown + * operation is already in progress (initiated from either side), then this + * call is a no-op. + * + * @throws IOException + */ + public void close() throws IOException + { + cm.closeChannel(cn, "Closed due to user request.", true); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/ProxyData.java b/lib/src/main/java/com/trilead/ssh2/ProxyData.java index 3298a9d..059a6e3 100644 --- a/lib/src/main/java/com/trilead/ssh2/ProxyData.java +++ b/lib/src/main/java/com/trilead/ssh2/ProxyData.java @@ -1,15 +1,15 @@ -
-package com.trilead.ssh2;
-
-/**
- * An abstract marker interface implemented by all proxy data implementations.
- *
- * @see HTTPProxyData
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public abstract interface ProxyData
-{
-}
+ +package com.trilead.ssh2; + +/** + * An abstract marker interface implemented by all proxy data implementations. + * + * @see HTTPProxyData + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public abstract interface ProxyData +{ +} diff --git a/lib/src/main/java/com/trilead/ssh2/SCPClient.java b/lib/src/main/java/com/trilead/ssh2/SCPClient.java index 8ea248a..b692750 100644 --- a/lib/src/main/java/com/trilead/ssh2/SCPClient.java +++ b/lib/src/main/java/com/trilead/ssh2/SCPClient.java @@ -1,729 +1,729 @@ -
-package com.trilead.ssh2;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * A very basic <code>SCPClient</code> that can be used to copy files from/to
- * the SSH-2 server. On the server side, the "scp" program must be in the PATH.
- * <p>
- * This scp client is thread safe - you can download (and upload) different sets
- * of files concurrently without any troubles. The <code>SCPClient</code> is
- * actually mapping every request to a distinct {@link Session}.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SCPClient.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class SCPClient
-{
- Connection conn;
-
- class LenNamePair
- {
- long length;
- String filename;
- }
-
- public SCPClient(Connection conn)
- {
- if (conn == null)
- throw new IllegalArgumentException("Cannot accept null argument!");
- this.conn = conn;
- }
-
- private void readResponse(InputStream is) throws IOException
- {
- int c = is.read();
-
- if (c == 0)
- return;
-
- if (c == -1)
- throw new IOException("Remote scp terminated unexpectedly.");
-
- if ((c != 1) && (c != 2))
- throw new IOException("Remote scp sent illegal error code.");
-
- if (c == 2)
- throw new IOException("Remote scp terminated with error.");
-
- String err = receiveLine(is);
- throw new IOException("Remote scp terminated with error (" + err + ").");
- }
-
- private String receiveLine(InputStream is) throws IOException
- {
- StringBuffer sb = new StringBuffer(30);
-
- while (true)
- {
- /*
- * This is a random limit - if your path names are longer, then
- * adjust it
- */
-
- if (sb.length() > 8192)
- throw new IOException("Remote scp sent a too long line");
-
- int c = is.read();
-
- if (c < 0)
- throw new IOException("Remote scp terminated unexpectedly.");
-
- if (c == '\n')
- break;
-
- sb.append((char) c);
-
- }
- return sb.toString();
- }
-
- private LenNamePair parseCLine(String line) throws IOException
- {
- /* Minimum line: "xxxx y z" ---> 8 chars */
-
- long len;
-
- if (line.length() < 8)
- throw new IOException("Malformed C line sent by remote SCP binary, line too short.");
-
- if ((line.charAt(4) != ' ') || (line.charAt(5) == ' '))
- throw new IOException("Malformed C line sent by remote SCP binary.");
-
- int length_name_sep = line.indexOf(' ', 5);
-
- if (length_name_sep == -1)
- throw new IOException("Malformed C line sent by remote SCP binary.");
-
- String length_substring = line.substring(5, length_name_sep);
- String name_substring = line.substring(length_name_sep + 1);
-
- if ((length_substring.length() <= 0) || (name_substring.length() <= 0))
- throw new IOException("Malformed C line sent by remote SCP binary.");
-
- if ((6 + length_substring.length() + name_substring.length()) != line.length())
- throw new IOException("Malformed C line sent by remote SCP binary.");
-
- try
- {
- len = Long.parseLong(length_substring);
- }
- catch (NumberFormatException e)
- {
- throw new IOException("Malformed C line sent by remote SCP binary, cannot parse file length.");
- }
-
- if (len < 0)
- throw new IOException("Malformed C line sent by remote SCP binary, illegal file length.");
-
- LenNamePair lnp = new LenNamePair();
- lnp.length = len;
- lnp.filename = name_substring;
-
- return lnp;
- }
-
- private void sendBytes(Session sess, byte[] data, String fileName, String mode) throws IOException
- {
- OutputStream os = sess.getStdin();
- InputStream is = new BufferedInputStream(sess.getStdout(), 512);
-
- readResponse(is);
-
- String cline = "C" + mode + " " + data.length + " " + fileName + "\n";
-
- os.write(cline.getBytes("ISO-8859-1"));
- os.flush();
-
- readResponse(is);
-
- os.write(data, 0, data.length);
- os.write(0);
- os.flush();
-
- readResponse(is);
-
- os.write("E\n".getBytes("ISO-8859-1"));
- os.flush();
- }
-
- private void sendFiles(Session sess, String[] files, String[] remoteFiles, String mode) throws IOException
- {
- byte[] buffer = new byte[8192];
-
- OutputStream os = new BufferedOutputStream(sess.getStdin(), 40000);
- InputStream is = new BufferedInputStream(sess.getStdout(), 512);
-
- readResponse(is);
-
- for (int i = 0; i < files.length; i++)
- {
- File f = new File(files[i]);
- long remain = f.length();
-
- String remoteName;
-
- if ((remoteFiles != null) && (remoteFiles.length > i) && (remoteFiles[i] != null))
- remoteName = remoteFiles[i];
- else
- remoteName = f.getName();
-
- String cline = "C" + mode + " " + remain + " " + remoteName + "\n";
-
- os.write(cline.getBytes("ISO-8859-1"));
- os.flush();
-
- readResponse(is);
-
- FileInputStream fis = null;
-
- try
- {
- fis = new FileInputStream(f);
-
- while (remain > 0)
- {
- int trans;
- if (remain > buffer.length)
- trans = buffer.length;
- else
- trans = (int) remain;
-
- if (fis.read(buffer, 0, trans) != trans)
- throw new IOException("Cannot read enough from local file " + files[i]);
-
- os.write(buffer, 0, trans);
-
- remain -= trans;
- }
- }
- finally
- {
- if (fis != null)
- fis.close();
- }
-
- os.write(0);
- os.flush();
-
- readResponse(is);
- }
-
- os.write("E\n".getBytes("ISO-8859-1"));
- os.flush();
- }
-
- private void receiveFiles(Session sess, OutputStream[] targets) throws IOException
- {
- byte[] buffer = new byte[8192];
-
- OutputStream os = new BufferedOutputStream(sess.getStdin(), 512);
- InputStream is = new BufferedInputStream(sess.getStdout(), 40000);
-
- os.write(0x0);
- os.flush();
-
- for (int i = 0; i < targets.length; i++)
- {
- LenNamePair lnp = null;
-
- while (true)
- {
- int c = is.read();
- if (c < 0)
- throw new IOException("Remote scp terminated unexpectedly.");
-
- String line = receiveLine(is);
-
- if (c == 'T')
- {
- /* Ignore modification times */
-
- continue;
- }
-
- if ((c == 1) || (c == 2))
- throw new IOException("Remote SCP error: " + line);
-
- if (c == 'C')
- {
- lnp = parseCLine(line);
- break;
-
- }
- throw new IOException("Remote SCP error: " + ((char) c) + line);
- }
-
- os.write(0x0);
- os.flush();
-
- long remain = lnp.length;
-
- while (remain > 0)
- {
- int trans;
- if (remain > buffer.length)
- trans = buffer.length;
- else
- trans = (int) remain;
-
- int this_time_received = is.read(buffer, 0, trans);
-
- if (this_time_received < 0)
- {
- throw new IOException("Remote scp terminated connection unexpectedly");
- }
-
- targets[i].write(buffer, 0, this_time_received);
-
- remain -= this_time_received;
- }
-
- readResponse(is);
-
- os.write(0x0);
- os.flush();
- }
- }
-
- private void receiveFiles(Session sess, String[] files, String target) throws IOException
- {
- byte[] buffer = new byte[8192];
-
- OutputStream os = new BufferedOutputStream(sess.getStdin(), 512);
- InputStream is = new BufferedInputStream(sess.getStdout(), 40000);
-
- os.write(0x0);
- os.flush();
-
- for (int i = 0; i < files.length; i++)
- {
- LenNamePair lnp = null;
-
- while (true)
- {
- int c = is.read();
- if (c < 0)
- throw new IOException("Remote scp terminated unexpectedly.");
-
- String line = receiveLine(is);
-
- if (c == 'T')
- {
- /* Ignore modification times */
-
- continue;
- }
-
- if ((c == 1) || (c == 2))
- throw new IOException("Remote SCP error: " + line);
-
- if (c == 'C')
- {
- lnp = parseCLine(line);
- break;
-
- }
- throw new IOException("Remote SCP error: " + ((char) c) + line);
- }
-
- os.write(0x0);
- os.flush();
-
- File f = new File(target + File.separatorChar + lnp.filename);
- FileOutputStream fop = null;
-
- try
- {
- fop = new FileOutputStream(f);
-
- long remain = lnp.length;
-
- while (remain > 0)
- {
- int trans;
- if (remain > buffer.length)
- trans = buffer.length;
- else
- trans = (int) remain;
-
- int this_time_received = is.read(buffer, 0, trans);
-
- if (this_time_received < 0)
- {
- throw new IOException("Remote scp terminated connection unexpectedly");
- }
-
- fop.write(buffer, 0, this_time_received);
-
- remain -= this_time_received;
- }
- }
- finally
- {
- if (fop != null)
- fop.close();
- }
-
- readResponse(is);
-
- os.write(0x0);
- os.flush();
- }
- }
-
- /**
- * Copy a local file to a remote directory, uses mode 0600 when creating the
- * file on the remote side.
- *
- * @param localFile
- * Path and name of local file.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- *
- * @throws IOException
- */
- public void put(String localFile, String remoteTargetDirectory) throws IOException
- {
- put(new String[] { localFile }, remoteTargetDirectory, "0600");
- }
-
- /**
- * Copy a set of local files to a remote directory, uses mode 0600 when
- * creating files on the remote side.
- *
- * @param localFiles
- * Paths and names of local file names.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- *
- * @throws IOException
- */
-
- public void put(String[] localFiles, String remoteTargetDirectory) throws IOException
- {
- put(localFiles, remoteTargetDirectory, "0600");
- }
-
- /**
- * Copy a local file to a remote directory, uses the specified mode when
- * creating the file on the remote side.
- *
- * @param localFile
- * Path and name of local file.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- * @param mode
- * a four digit string (e.g., 0644, see "man chmod", "man open")
- * @throws IOException
- */
- public void put(String localFile, String remoteTargetDirectory, String mode) throws IOException
- {
- put(new String[] { localFile }, remoteTargetDirectory, mode);
- }
-
- /**
- * Copy a local file to a remote directory, uses the specified mode and
- * remote filename when creating the file on the remote side.
- *
- * @param localFile
- * Path and name of local file.
- * @param remoteFileName
- * The name of the file which will be created in the remote
- * target directory.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- * @param mode
- * a four digit string (e.g., 0644, see "man chmod", "man open")
- * @throws IOException
- */
- public void put(String localFile, String remoteFileName, String remoteTargetDirectory, String mode)
- throws IOException
- {
- put(new String[] { localFile }, new String[] { remoteFileName }, remoteTargetDirectory, mode);
- }
-
- /**
- * Create a remote file and copy the contents of the passed byte array into
- * it. Uses mode 0600 for creating the remote file.
- *
- * @param data
- * the data to be copied into the remote file.
- * @param remoteFileName
- * The name of the file which will be created in the remote
- * target directory.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- * @throws IOException
- */
-
- public void put(byte[] data, String remoteFileName, String remoteTargetDirectory) throws IOException
- {
- put(data, remoteFileName, remoteTargetDirectory, "0600");
- }
-
- /**
- * Create a remote file and copy the contents of the passed byte array into
- * it. The method use the specified mode when creating the file on the
- * remote side.
- *
- * @param data
- * the data to be copied into the remote file.
- * @param remoteFileName
- * The name of the file which will be created in the remote
- * target directory.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- * @param mode
- * a four digit string (e.g., 0644, see "man chmod", "man open")
- * @throws IOException
- */
- public void put(byte[] data, String remoteFileName, String remoteTargetDirectory, String mode) throws IOException
- {
- Session sess = null;
-
- if ((remoteFileName == null) || (remoteTargetDirectory == null) || (mode == null))
- throw new IllegalArgumentException("Null argument.");
-
- if (mode.length() != 4)
- throw new IllegalArgumentException("Invalid mode.");
-
- for (int i = 0; i < mode.length(); i++)
- if (Character.isDigit(mode.charAt(i)) == false)
- throw new IllegalArgumentException("Invalid mode.");
-
- remoteTargetDirectory = remoteTargetDirectory.trim();
- remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : ".";
-
- String cmd = "scp -t -d " + remoteTargetDirectory;
-
- try
- {
- sess = conn.openSession();
- sess.execCommand(cmd);
- sendBytes(sess, data, remoteFileName, mode);
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
- }
- finally
- {
- if (sess != null)
- sess.close();
- }
- }
-
- /**
- * Copy a set of local files to a remote directory, uses the specified mode
- * when creating the files on the remote side.
- *
- * @param localFiles
- * Paths and names of the local files.
- * @param remoteTargetDirectory
- * Remote target directory. Use an empty string to specify the
- * default directory.
- * @param mode
- * a four digit string (e.g., 0644, see "man chmod", "man open")
- * @throws IOException
- */
- public void put(String[] localFiles, String remoteTargetDirectory, String mode) throws IOException
- {
- put(localFiles, null, remoteTargetDirectory, mode);
- }
-
- public void put(String[] localFiles, String[] remoteFiles, String remoteTargetDirectory, String mode)
- throws IOException
- {
- Session sess = null;
-
- /*
- * remoteFiles may be null, indicating that the local filenames shall be
- * used
- */
-
- if ((localFiles == null) || (remoteTargetDirectory == null) || (mode == null))
- throw new IllegalArgumentException("Null argument.");
-
- if (mode.length() != 4)
- throw new IllegalArgumentException("Invalid mode.");
-
- for (int i = 0; i < mode.length(); i++)
- if (Character.isDigit(mode.charAt(i)) == false)
- throw new IllegalArgumentException("Invalid mode.");
-
- if (localFiles.length == 0)
- return;
-
- remoteTargetDirectory = remoteTargetDirectory.trim();
- remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : ".";
-
- String cmd = "scp -t -d " + remoteTargetDirectory;
-
- for (int i = 0; i < localFiles.length; i++)
- {
- if (localFiles[i] == null)
- throw new IllegalArgumentException("Cannot accept null filename.");
- }
-
- try
- {
- sess = conn.openSession();
- sess.execCommand(cmd);
- sendFiles(sess, localFiles, remoteFiles, mode);
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
- }
- finally
- {
- if (sess != null)
- sess.close();
- }
- }
-
- /**
- * Download a file from the remote server to a local directory.
- *
- * @param remoteFile
- * Path and name of the remote file.
- * @param localTargetDirectory
- * Local directory to put the downloaded file.
- *
- * @throws IOException
- */
- public void get(String remoteFile, String localTargetDirectory) throws IOException
- {
- get(new String[] { remoteFile }, localTargetDirectory);
- }
-
- /**
- * Download a file from the remote server and pipe its contents into an
- * <code>OutputStream</code>. Please note that, to enable flexible usage
- * of this method, the <code>OutputStream</code> will not be closed nor
- * flushed.
- *
- * @param remoteFile
- * Path and name of the remote file.
- * @param target
- * OutputStream where the contents of the file will be sent to.
- * @throws IOException
- */
- public void get(String remoteFile, OutputStream target) throws IOException
- {
- get(new String[] { remoteFile }, new OutputStream[] { target });
- }
-
- private void get(String remoteFiles[], OutputStream[] targets) throws IOException
- {
- Session sess = null;
-
- if ((remoteFiles == null) || (targets == null))
- throw new IllegalArgumentException("Null argument.");
-
- if (remoteFiles.length != targets.length)
- throw new IllegalArgumentException("Length of arguments does not match.");
-
- if (remoteFiles.length == 0)
- return;
-
- String cmd = "scp -f";
-
- for (int i = 0; i < remoteFiles.length; i++)
- {
- if (remoteFiles[i] == null)
- throw new IllegalArgumentException("Cannot accept null filename.");
-
- String tmp = remoteFiles[i].trim();
-
- if (tmp.length() == 0)
- throw new IllegalArgumentException("Cannot accept empty filename.");
-
- cmd += (" " + tmp);
- }
-
- try
- {
- sess = conn.openSession();
- sess.execCommand(cmd);
- receiveFiles(sess, targets);
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
- }
- finally
- {
- if (sess != null)
- sess.close();
- }
- }
-
- /**
- * Download a set of files from the remote server to a local directory.
- *
- * @param remoteFiles
- * Paths and names of the remote files.
- * @param localTargetDirectory
- * Local directory to put the downloaded files.
- *
- * @throws IOException
- */
- public void get(String remoteFiles[], String localTargetDirectory) throws IOException
- {
- Session sess = null;
-
- if ((remoteFiles == null) || (localTargetDirectory == null))
- throw new IllegalArgumentException("Null argument.");
-
- if (remoteFiles.length == 0)
- return;
-
- String cmd = "scp -f";
-
- for (int i = 0; i < remoteFiles.length; i++)
- {
- if (remoteFiles[i] == null)
- throw new IllegalArgumentException("Cannot accept null filename.");
-
- String tmp = remoteFiles[i].trim();
-
- if (tmp.length() == 0)
- throw new IllegalArgumentException("Cannot accept empty filename.");
-
- cmd += (" " + tmp);
- }
-
- try
- {
- sess = conn.openSession();
- sess.execCommand(cmd);
- receiveFiles(sess, remoteFiles, localTargetDirectory);
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
- }
- finally
- {
- if (sess != null)
- sess.close();
- }
- }
-}
+ +package com.trilead.ssh2; + +import java.io.BufferedInputStream; +import java.io.BufferedOutputStream; +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; + +/** + * A very basic <code>SCPClient</code> that can be used to copy files from/to + * the SSH-2 server. On the server side, the "scp" program must be in the PATH. + * <p> + * This scp client is thread safe - you can download (and upload) different sets + * of files concurrently without any troubles. The <code>SCPClient</code> is + * actually mapping every request to a distinct {@link Session}. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SCPClient.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ + +public class SCPClient +{ + Connection conn; + + class LenNamePair + { + long length; + String filename; + } + + public SCPClient(Connection conn) + { + if (conn == null) + throw new IllegalArgumentException("Cannot accept null argument!"); + this.conn = conn; + } + + private void readResponse(InputStream is) throws IOException + { + int c = is.read(); + + if (c == 0) + return; + + if (c == -1) + throw new IOException("Remote scp terminated unexpectedly."); + + if ((c != 1) && (c != 2)) + throw new IOException("Remote scp sent illegal error code."); + + if (c == 2) + throw new IOException("Remote scp terminated with error."); + + String err = receiveLine(is); + throw new IOException("Remote scp terminated with error (" + err + ")."); + } + + private String receiveLine(InputStream is) throws IOException + { + StringBuffer sb = new StringBuffer(30); + + while (true) + { + /* + * This is a random limit - if your path names are longer, then + * adjust it + */ + + if (sb.length() > 8192) + throw new IOException("Remote scp sent a too long line"); + + int c = is.read(); + + if (c < 0) + throw new IOException("Remote scp terminated unexpectedly."); + + if (c == '\n') + break; + + sb.append((char) c); + + } + return sb.toString(); + } + + private LenNamePair parseCLine(String line) throws IOException + { + /* Minimum line: "xxxx y z" ---> 8 chars */ + + long len; + + if (line.length() < 8) + throw new IOException("Malformed C line sent by remote SCP binary, line too short."); + + if ((line.charAt(4) != ' ') || (line.charAt(5) == ' ')) + throw new IOException("Malformed C line sent by remote SCP binary."); + + int length_name_sep = line.indexOf(' ', 5); + + if (length_name_sep == -1) + throw new IOException("Malformed C line sent by remote SCP binary."); + + String length_substring = line.substring(5, length_name_sep); + String name_substring = line.substring(length_name_sep + 1); + + if ((length_substring.length() <= 0) || (name_substring.length() <= 0)) + throw new IOException("Malformed C line sent by remote SCP binary."); + + if ((6 + length_substring.length() + name_substring.length()) != line.length()) + throw new IOException("Malformed C line sent by remote SCP binary."); + + try + { + len = Long.parseLong(length_substring); + } + catch (NumberFormatException e) + { + throw new IOException("Malformed C line sent by remote SCP binary, cannot parse file length."); + } + + if (len < 0) + throw new IOException("Malformed C line sent by remote SCP binary, illegal file length."); + + LenNamePair lnp = new LenNamePair(); + lnp.length = len; + lnp.filename = name_substring; + + return lnp; + } + + private void sendBytes(Session sess, byte[] data, String fileName, String mode) throws IOException + { + OutputStream os = sess.getStdin(); + InputStream is = new BufferedInputStream(sess.getStdout(), 512); + + readResponse(is); + + String cline = "C" + mode + " " + data.length + " " + fileName + "\n"; + + os.write(cline.getBytes("ISO-8859-1")); + os.flush(); + + readResponse(is); + + os.write(data, 0, data.length); + os.write(0); + os.flush(); + + readResponse(is); + + os.write("E\n".getBytes("ISO-8859-1")); + os.flush(); + } + + private void sendFiles(Session sess, String[] files, String[] remoteFiles, String mode) throws IOException + { + byte[] buffer = new byte[8192]; + + OutputStream os = new BufferedOutputStream(sess.getStdin(), 40000); + InputStream is = new BufferedInputStream(sess.getStdout(), 512); + + readResponse(is); + + for (int i = 0; i < files.length; i++) + { + File f = new File(files[i]); + long remain = f.length(); + + String remoteName; + + if ((remoteFiles != null) && (remoteFiles.length > i) && (remoteFiles[i] != null)) + remoteName = remoteFiles[i]; + else + remoteName = f.getName(); + + String cline = "C" + mode + " " + remain + " " + remoteName + "\n"; + + os.write(cline.getBytes("ISO-8859-1")); + os.flush(); + + readResponse(is); + + FileInputStream fis = null; + + try + { + fis = new FileInputStream(f); + + while (remain > 0) + { + int trans; + if (remain > buffer.length) + trans = buffer.length; + else + trans = (int) remain; + + if (fis.read(buffer, 0, trans) != trans) + throw new IOException("Cannot read enough from local file " + files[i]); + + os.write(buffer, 0, trans); + + remain -= trans; + } + } + finally + { + if (fis != null) + fis.close(); + } + + os.write(0); + os.flush(); + + readResponse(is); + } + + os.write("E\n".getBytes("ISO-8859-1")); + os.flush(); + } + + private void receiveFiles(Session sess, OutputStream[] targets) throws IOException + { + byte[] buffer = new byte[8192]; + + OutputStream os = new BufferedOutputStream(sess.getStdin(), 512); + InputStream is = new BufferedInputStream(sess.getStdout(), 40000); + + os.write(0x0); + os.flush(); + + for (int i = 0; i < targets.length; i++) + { + LenNamePair lnp = null; + + while (true) + { + int c = is.read(); + if (c < 0) + throw new IOException("Remote scp terminated unexpectedly."); + + String line = receiveLine(is); + + if (c == 'T') + { + /* Ignore modification times */ + + continue; + } + + if ((c == 1) || (c == 2)) + throw new IOException("Remote SCP error: " + line); + + if (c == 'C') + { + lnp = parseCLine(line); + break; + + } + throw new IOException("Remote SCP error: " + ((char) c) + line); + } + + os.write(0x0); + os.flush(); + + long remain = lnp.length; + + while (remain > 0) + { + int trans; + if (remain > buffer.length) + trans = buffer.length; + else + trans = (int) remain; + + int this_time_received = is.read(buffer, 0, trans); + + if (this_time_received < 0) + { + throw new IOException("Remote scp terminated connection unexpectedly"); + } + + targets[i].write(buffer, 0, this_time_received); + + remain -= this_time_received; + } + + readResponse(is); + + os.write(0x0); + os.flush(); + } + } + + private void receiveFiles(Session sess, String[] files, String target) throws IOException + { + byte[] buffer = new byte[8192]; + + OutputStream os = new BufferedOutputStream(sess.getStdin(), 512); + InputStream is = new BufferedInputStream(sess.getStdout(), 40000); + + os.write(0x0); + os.flush(); + + for (int i = 0; i < files.length; i++) + { + LenNamePair lnp = null; + + while (true) + { + int c = is.read(); + if (c < 0) + throw new IOException("Remote scp terminated unexpectedly."); + + String line = receiveLine(is); + + if (c == 'T') + { + /* Ignore modification times */ + + continue; + } + + if ((c == 1) || (c == 2)) + throw new IOException("Remote SCP error: " + line); + + if (c == 'C') + { + lnp = parseCLine(line); + break; + + } + throw new IOException("Remote SCP error: " + ((char) c) + line); + } + + os.write(0x0); + os.flush(); + + File f = new File(target + File.separatorChar + lnp.filename); + FileOutputStream fop = null; + + try + { + fop = new FileOutputStream(f); + + long remain = lnp.length; + + while (remain > 0) + { + int trans; + if (remain > buffer.length) + trans = buffer.length; + else + trans = (int) remain; + + int this_time_received = is.read(buffer, 0, trans); + + if (this_time_received < 0) + { + throw new IOException("Remote scp terminated connection unexpectedly"); + } + + fop.write(buffer, 0, this_time_received); + + remain -= this_time_received; + } + } + finally + { + if (fop != null) + fop.close(); + } + + readResponse(is); + + os.write(0x0); + os.flush(); + } + } + + /** + * Copy a local file to a remote directory, uses mode 0600 when creating the + * file on the remote side. + * + * @param localFile + * Path and name of local file. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * + * @throws IOException + */ + public void put(String localFile, String remoteTargetDirectory) throws IOException + { + put(new String[] { localFile }, remoteTargetDirectory, "0600"); + } + + /** + * Copy a set of local files to a remote directory, uses mode 0600 when + * creating files on the remote side. + * + * @param localFiles + * Paths and names of local file names. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * + * @throws IOException + */ + + public void put(String[] localFiles, String remoteTargetDirectory) throws IOException + { + put(localFiles, remoteTargetDirectory, "0600"); + } + + /** + * Copy a local file to a remote directory, uses the specified mode when + * creating the file on the remote side. + * + * @param localFile + * Path and name of local file. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * @param mode + * a four digit string (e.g., 0644, see "man chmod", "man open") + * @throws IOException + */ + public void put(String localFile, String remoteTargetDirectory, String mode) throws IOException + { + put(new String[] { localFile }, remoteTargetDirectory, mode); + } + + /** + * Copy a local file to a remote directory, uses the specified mode and + * remote filename when creating the file on the remote side. + * + * @param localFile + * Path and name of local file. + * @param remoteFileName + * The name of the file which will be created in the remote + * target directory. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * @param mode + * a four digit string (e.g., 0644, see "man chmod", "man open") + * @throws IOException + */ + public void put(String localFile, String remoteFileName, String remoteTargetDirectory, String mode) + throws IOException + { + put(new String[] { localFile }, new String[] { remoteFileName }, remoteTargetDirectory, mode); + } + + /** + * Create a remote file and copy the contents of the passed byte array into + * it. Uses mode 0600 for creating the remote file. + * + * @param data + * the data to be copied into the remote file. + * @param remoteFileName + * The name of the file which will be created in the remote + * target directory. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * @throws IOException + */ + + public void put(byte[] data, String remoteFileName, String remoteTargetDirectory) throws IOException + { + put(data, remoteFileName, remoteTargetDirectory, "0600"); + } + + /** + * Create a remote file and copy the contents of the passed byte array into + * it. The method use the specified mode when creating the file on the + * remote side. + * + * @param data + * the data to be copied into the remote file. + * @param remoteFileName + * The name of the file which will be created in the remote + * target directory. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * @param mode + * a four digit string (e.g., 0644, see "man chmod", "man open") + * @throws IOException + */ + public void put(byte[] data, String remoteFileName, String remoteTargetDirectory, String mode) throws IOException + { + Session sess = null; + + if ((remoteFileName == null) || (remoteTargetDirectory == null) || (mode == null)) + throw new IllegalArgumentException("Null argument."); + + if (mode.length() != 4) + throw new IllegalArgumentException("Invalid mode."); + + for (int i = 0; i < mode.length(); i++) + if (Character.isDigit(mode.charAt(i)) == false) + throw new IllegalArgumentException("Invalid mode."); + + remoteTargetDirectory = remoteTargetDirectory.trim(); + remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : "."; + + String cmd = "scp -t -d " + remoteTargetDirectory; + + try + { + sess = conn.openSession(); + sess.execCommand(cmd); + sendBytes(sess, data, remoteFileName, mode); + } + catch (IOException e) + { + throw (IOException) new IOException("Error during SCP transfer.").initCause(e); + } + finally + { + if (sess != null) + sess.close(); + } + } + + /** + * Copy a set of local files to a remote directory, uses the specified mode + * when creating the files on the remote side. + * + * @param localFiles + * Paths and names of the local files. + * @param remoteTargetDirectory + * Remote target directory. Use an empty string to specify the + * default directory. + * @param mode + * a four digit string (e.g., 0644, see "man chmod", "man open") + * @throws IOException + */ + public void put(String[] localFiles, String remoteTargetDirectory, String mode) throws IOException + { + put(localFiles, null, remoteTargetDirectory, mode); + } + + public void put(String[] localFiles, String[] remoteFiles, String remoteTargetDirectory, String mode) + throws IOException + { + Session sess = null; + + /* + * remoteFiles may be null, indicating that the local filenames shall be + * used + */ + + if ((localFiles == null) || (remoteTargetDirectory == null) || (mode == null)) + throw new IllegalArgumentException("Null argument."); + + if (mode.length() != 4) + throw new IllegalArgumentException("Invalid mode."); + + for (int i = 0; i < mode.length(); i++) + if (Character.isDigit(mode.charAt(i)) == false) + throw new IllegalArgumentException("Invalid mode."); + + if (localFiles.length == 0) + return; + + remoteTargetDirectory = remoteTargetDirectory.trim(); + remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : "."; + + String cmd = "scp -t -d " + remoteTargetDirectory; + + for (int i = 0; i < localFiles.length; i++) + { + if (localFiles[i] == null) + throw new IllegalArgumentException("Cannot accept null filename."); + } + + try + { + sess = conn.openSession(); + sess.execCommand(cmd); + sendFiles(sess, localFiles, remoteFiles, mode); + } + catch (IOException e) + { + throw (IOException) new IOException("Error during SCP transfer.").initCause(e); + } + finally + { + if (sess != null) + sess.close(); + } + } + + /** + * Download a file from the remote server to a local directory. + * + * @param remoteFile + * Path and name of the remote file. + * @param localTargetDirectory + * Local directory to put the downloaded file. + * + * @throws IOException + */ + public void get(String remoteFile, String localTargetDirectory) throws IOException + { + get(new String[] { remoteFile }, localTargetDirectory); + } + + /** + * Download a file from the remote server and pipe its contents into an + * <code>OutputStream</code>. Please note that, to enable flexible usage + * of this method, the <code>OutputStream</code> will not be closed nor + * flushed. + * + * @param remoteFile + * Path and name of the remote file. + * @param target + * OutputStream where the contents of the file will be sent to. + * @throws IOException + */ + public void get(String remoteFile, OutputStream target) throws IOException + { + get(new String[] { remoteFile }, new OutputStream[] { target }); + } + + private void get(String remoteFiles[], OutputStream[] targets) throws IOException + { + Session sess = null; + + if ((remoteFiles == null) || (targets == null)) + throw new IllegalArgumentException("Null argument."); + + if (remoteFiles.length != targets.length) + throw new IllegalArgumentException("Length of arguments does not match."); + + if (remoteFiles.length == 0) + return; + + String cmd = "scp -f"; + + for (int i = 0; i < remoteFiles.length; i++) + { + if (remoteFiles[i] == null) + throw new IllegalArgumentException("Cannot accept null filename."); + + String tmp = remoteFiles[i].trim(); + + if (tmp.length() == 0) + throw new IllegalArgumentException("Cannot accept empty filename."); + + cmd += (" " + tmp); + } + + try + { + sess = conn.openSession(); + sess.execCommand(cmd); + receiveFiles(sess, targets); + } + catch (IOException e) + { + throw (IOException) new IOException("Error during SCP transfer.").initCause(e); + } + finally + { + if (sess != null) + sess.close(); + } + } + + /** + * Download a set of files from the remote server to a local directory. + * + * @param remoteFiles + * Paths and names of the remote files. + * @param localTargetDirectory + * Local directory to put the downloaded files. + * + * @throws IOException + */ + public void get(String remoteFiles[], String localTargetDirectory) throws IOException + { + Session sess = null; + + if ((remoteFiles == null) || (localTargetDirectory == null)) + throw new IllegalArgumentException("Null argument."); + + if (remoteFiles.length == 0) + return; + + String cmd = "scp -f"; + + for (int i = 0; i < remoteFiles.length; i++) + { + if (remoteFiles[i] == null) + throw new IllegalArgumentException("Cannot accept null filename."); + + String tmp = remoteFiles[i].trim(); + + if (tmp.length() == 0) + throw new IllegalArgumentException("Cannot accept empty filename."); + + cmd += (" " + tmp); + } + + try + { + sess = conn.openSession(); + sess.execCommand(cmd); + receiveFiles(sess, remoteFiles, localTargetDirectory); + } + catch (IOException e) + { + throw (IOException) new IOException("Error during SCP transfer.").initCause(e); + } + finally + { + if (sess != null) + sess.close(); + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/SFTPException.java b/lib/src/main/java/com/trilead/ssh2/SFTPException.java index f3b6d3e..d97723f 100644 --- a/lib/src/main/java/com/trilead/ssh2/SFTPException.java +++ b/lib/src/main/java/com/trilead/ssh2/SFTPException.java @@ -1,91 +1,91 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-
-import com.trilead.ssh2.sftp.ErrorCodes;
-
-
-/**
- * Used in combination with the SFTPv3Client. This exception wraps
- * error messages sent by the SFTP server.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPException extends IOException
-{
- private static final long serialVersionUID = 578654644222421811L;
-
- private final String sftpErrorMessage;
- private final int sftpErrorCode;
-
- private static String constructMessage(String s, int errorCode)
- {
- String[] detail = ErrorCodes.getDescription(errorCode);
-
- if (detail == null)
- return s + " (UNKNOW SFTP ERROR CODE)";
-
- return s + " (" + detail[0] + ": " + detail[1] + ")";
- }
-
- SFTPException(String msg, int errorCode)
- {
- super(constructMessage(msg, errorCode));
- sftpErrorMessage = msg;
- sftpErrorCode = errorCode;
- }
-
- /**
- * Get the error message sent by the server. Often, this
- * message does not help a lot (e.g., "failure").
- *
- * @return the plain string as sent by the server.
- */
- public String getServerErrorMessage()
- {
- return sftpErrorMessage;
- }
-
- /**
- * Get the error code sent by the server.
- *
- * @return an error code as defined in the SFTP specs.
- */
- public int getServerErrorCode()
- {
- return sftpErrorCode;
- }
-
- /**
- * Get the symbolic name of the error code as given in the SFTP specs.
- *
- * @return e.g., "SSH_FX_INVALID_FILENAME".
- */
- public String getServerErrorCodeSymbol()
- {
- String[] detail = ErrorCodes.getDescription(sftpErrorCode);
-
- if (detail == null)
- return "UNKNOW SFTP ERROR CODE " + sftpErrorCode;
-
- return detail[0];
- }
-
- /**
- * Get the description of the error code as given in the SFTP specs.
- *
- * @return e.g., "The filename is not valid."
- */
- public String getServerErrorCodeVerbose()
- {
- String[] detail = ErrorCodes.getDescription(sftpErrorCode);
-
- if (detail == null)
- return "The error code " + sftpErrorCode + " is unknown.";
-
- return detail[1];
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; + +import com.trilead.ssh2.sftp.ErrorCodes; + + +/** + * Used in combination with the SFTPv3Client. This exception wraps + * error messages sent by the SFTP server. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SFTPException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class SFTPException extends IOException +{ + private static final long serialVersionUID = 578654644222421811L; + + private final String sftpErrorMessage; + private final int sftpErrorCode; + + private static String constructMessage(String s, int errorCode) + { + String[] detail = ErrorCodes.getDescription(errorCode); + + if (detail == null) + return s + " (UNKNOW SFTP ERROR CODE)"; + + return s + " (" + detail[0] + ": " + detail[1] + ")"; + } + + SFTPException(String msg, int errorCode) + { + super(constructMessage(msg, errorCode)); + sftpErrorMessage = msg; + sftpErrorCode = errorCode; + } + + /** + * Get the error message sent by the server. Often, this + * message does not help a lot (e.g., "failure"). + * + * @return the plain string as sent by the server. + */ + public String getServerErrorMessage() + { + return sftpErrorMessage; + } + + /** + * Get the error code sent by the server. + * + * @return an error code as defined in the SFTP specs. + */ + public int getServerErrorCode() + { + return sftpErrorCode; + } + + /** + * Get the symbolic name of the error code as given in the SFTP specs. + * + * @return e.g., "SSH_FX_INVALID_FILENAME". + */ + public String getServerErrorCodeSymbol() + { + String[] detail = ErrorCodes.getDescription(sftpErrorCode); + + if (detail == null) + return "UNKNOW SFTP ERROR CODE " + sftpErrorCode; + + return detail[0]; + } + + /** + * Get the description of the error code as given in the SFTP specs. + * + * @return e.g., "The filename is not valid." + */ + public String getServerErrorCodeVerbose() + { + String[] detail = ErrorCodes.getDescription(sftpErrorCode); + + if (detail == null) + return "The error code " + sftpErrorCode + " is unknown."; + + return detail[1]; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/SFTPv3Client.java b/lib/src/main/java/com/trilead/ssh2/SFTPv3Client.java index be2fa1c..06796e9 100644 --- a/lib/src/main/java/com/trilead/ssh2/SFTPv3Client.java +++ b/lib/src/main/java/com/trilead/ssh2/SFTPv3Client.java @@ -1,1388 +1,1388 @@ -
-package com.trilead.ssh2;
-
-import java.io.BufferedOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.PrintStream;
-import java.nio.charset.Charset;
-import java.util.HashMap;
-import java.util.Vector;
-
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-import com.trilead.ssh2.sftp.AttribFlags;
-import com.trilead.ssh2.sftp.ErrorCodes;
-import com.trilead.ssh2.sftp.Packet;
-
-
-/**
- * A <code>SFTPv3Client</code> represents a SFTP (protocol version 3)
- * client connection tunnelled over a SSH-2 connection. This is a very simple
- * (synchronous) implementation.
- * <p>
- * Basically, most methods in this class map directly to one of
- * the packet types described in draft-ietf-secsh-filexfer-02.txt.
- * <p>
- * Note: this is experimental code.
- * <p>
- * Error handling: the methods of this class throw IOExceptions. However, unless
- * there is catastrophic failure, exceptions of the type {@link SFTPv3Client} will
- * be thrown (a subclass of IOException). Therefore, you can implement more verbose
- * behavior by checking if a thrown exception if of this type. If yes, then you
- * can cast the exception and access detailed information about the failure.
- * <p>
- * Notes about file names, directory names and paths, copy-pasted
- * from the specs:
- * <ul>
- * <li>SFTP v3 represents file names as strings. File names are
- * assumed to use the slash ('/') character as a directory separator.</li>
- * <li>File names starting with a slash are "absolute", and are relative to
- * the root of the file system. Names starting with any other character
- * are relative to the user's default directory (home directory).</li>
- * <li>Servers SHOULD interpret a path name component ".." as referring to
- * the parent directory, and "." as referring to the current directory.
- * If the server implementation limits access to certain parts of the
- * file system, it must be extra careful in parsing file names when
- * enforcing such restrictions. There have been numerous reported
- * security bugs where a ".." in a path name has allowed access outside
- * the intended area.</li>
- * <li>An empty path name is valid, and it refers to the user's default
- * directory (usually the user's home directory).</li>
- * </ul>
- * <p>
- * If you are still not tired then please go on and read the comment for
- * {@link #setCharset(String)}.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3Client.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $
- */
-public class SFTPv3Client
-{
- final Connection conn;
- final Session sess;
- final PrintStream debug;
-
- boolean flag_closed = false;
-
- InputStream is;
- OutputStream os;
-
- int protocol_version = 0;
- HashMap server_extensions = new HashMap();
-
- int next_request_id = 1000;
-
- String charsetName = null;
-
- /**
- * Create a SFTP v3 client.
- *
- * @param conn The underlying SSH-2 connection to be used.
- * @param debug
- * @throws IOException
- *
- * @deprecated this constructor (debug version) will disappear in the future,
- * use {@link #SFTPv3Client(Connection)} instead.
- */
- public SFTPv3Client(Connection conn, PrintStream debug) throws IOException
- {
- if (conn == null)
- throw new IllegalArgumentException("Cannot accept null argument!");
-
- this.conn = conn;
- this.debug = debug;
-
- if (debug != null)
- debug.println("Opening session and starting SFTP subsystem.");
-
- sess = conn.openSession();
- sess.startSubSystem("sftp");
-
- is = sess.getStdout();
- os = new BufferedOutputStream(sess.getStdin(), 2048);
-
- if ((is == null) || (os == null))
- throw new IOException("There is a problem with the streams of the underlying channel.");
-
- init();
- }
-
- /**
- * Create a SFTP v3 client.
- *
- * @param conn The underlying SSH-2 connection to be used.
- * @throws IOException
- */
- public SFTPv3Client(Connection conn) throws IOException
- {
- this(conn, null);
- }
-
- /**
- * Set the charset used to convert between Java Unicode Strings and byte encodings
- * used by the server for paths and file names. Unfortunately, the SFTP v3 draft
- * says NOTHING about such conversions (well, with the exception of error messages
- * which have to be in UTF-8). Newer drafts specify to use UTF-8 for file names
- * (if I remember correctly). However, a quick test using OpenSSH serving a EXT-3
- * filesystem has shown that UTF-8 seems to be a bad choice for SFTP v3 (tested with
- * filenames containing german umlauts). "windows-1252" seems to work better for Europe.
- * Luckily, "windows-1252" is the platform default in my case =).
- * <p>
- * If you don't set anything, then the platform default will be used (this is the default
- * behavior).
- *
- * @see #getCharset()
- *
- * @param charset the name of the charset to be used or <code>null</code> to use the platform's
- * default encoding.
- * @throws IOException
- */
- public void setCharset(String charset) throws IOException
- {
- if (charset == null)
- {
- charsetName = charset;
- return;
- }
-
- try
- {
- Charset.forName(charset);
- }
- catch (Exception e)
- {
- throw (IOException) new IOException("This charset is not supported").initCause(e);
- }
- charsetName = charset;
- }
-
- /**
- * The currently used charset for filename encoding/decoding.
- *
- * @see #setCharset(String)
- *
- * @return The name of the charset (<code>null</code> if the platform's default charset is being used)
- */
- public String getCharset()
- {
- return charsetName;
- }
-
- private final void checkHandleValidAndOpen(SFTPv3FileHandle handle) throws IOException
- {
- if (handle.client != this)
- throw new IOException("The file handle was created with another SFTPv3FileHandle instance.");
-
- if (handle.isClosed == true)
- throw new IOException("The file handle is closed.");
- }
-
- private final void sendMessage(int type, int requestId, byte[] msg, int off, int len) throws IOException
- {
- int msglen = len + 1;
-
- if (type != Packet.SSH_FXP_INIT)
- msglen += 4;
-
- os.write(msglen >> 24);
- os.write(msglen >> 16);
- os.write(msglen >> 8);
- os.write(msglen);
- os.write(type);
-
- if (type != Packet.SSH_FXP_INIT)
- {
- os.write(requestId >> 24);
- os.write(requestId >> 16);
- os.write(requestId >> 8);
- os.write(requestId);
- }
-
- os.write(msg, off, len);
- os.flush();
- }
-
- private final void sendMessage(int type, int requestId, byte[] msg) throws IOException
- {
- sendMessage(type, requestId, msg, 0, msg.length);
- }
-
- private final void readBytes(byte[] buff, int pos, int len) throws IOException
- {
- while (len > 0)
- {
- int count = is.read(buff, pos, len);
- if (count < 0)
- throw new IOException("Unexpected end of sftp stream.");
- if ((count == 0) || (count > len))
- throw new IOException("Underlying stream implementation is bogus!");
- len -= count;
- pos += count;
- }
- }
-
- /**
- * Read a message and guarantee that the <b>contents</b> is not larger than
- * <code>maxlen</code> bytes.
- * <p>
- * Note: receiveMessage(34000) actually means that the message may be up to 34004
- * bytes (the length attribute preceeding the contents is 4 bytes).
- *
- * @param maxlen
- * @return the message contents
- * @throws IOException
- */
- private final byte[] receiveMessage(int maxlen) throws IOException
- {
- byte[] msglen = new byte[4];
-
- readBytes(msglen, 0, 4);
-
- int len = (((msglen[0] & 0xff) << 24) | ((msglen[1] & 0xff) << 16) | ((msglen[2] & 0xff) << 8) | (msglen[3] & 0xff));
-
- if ((len > maxlen) || (len <= 0))
- throw new IOException("Illegal sftp packet len: " + len);
-
- byte[] msg = new byte[len];
-
- readBytes(msg, 0, len);
-
- return msg;
- }
-
- private final int generateNextRequestID()
- {
- synchronized (this)
- {
- return next_request_id++;
- }
- }
-
- private final void closeHandle(byte[] handle) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle, 0, handle.length);
-
- sendMessage(Packet.SSH_FXP_CLOSE, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- private SFTPv3FileAttributes readAttrs(TypesReader tr) throws IOException
- {
- /*
- * uint32 flags
- * uint64 size present only if flag SSH_FILEXFER_ATTR_SIZE
- * uint32 uid present only if flag SSH_FILEXFER_ATTR_V3_UIDGID
- * uint32 gid present only if flag SSH_FILEXFER_ATTR_V3_UIDGID
- * uint32 permissions present only if flag SSH_FILEXFER_ATTR_PERMISSIONS
- * uint32 atime present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME
- * uint32 mtime present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME
- * uint32 extended_count present only if flag SSH_FILEXFER_ATTR_EXTENDED
- * string extended_type
- * string extended_data
- * ... more extended data (extended_type - extended_data pairs),
- * so that number of pairs equals extended_count
- */
-
- SFTPv3FileAttributes fa = new SFTPv3FileAttributes();
-
- int flags = tr.readUINT32();
-
- if ((flags & AttribFlags.SSH_FILEXFER_ATTR_SIZE) != 0)
- {
- if (debug != null)
- debug.println("SSH_FILEXFER_ATTR_SIZE");
- fa.size = new Long(tr.readUINT64());
- }
-
- if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID) != 0)
- {
- if (debug != null)
- debug.println("SSH_FILEXFER_ATTR_V3_UIDGID");
- fa.uid = new Integer(tr.readUINT32());
- fa.gid = new Integer(tr.readUINT32());
- }
-
- if ((flags & AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS) != 0)
- {
- if (debug != null)
- debug.println("SSH_FILEXFER_ATTR_PERMISSIONS");
- fa.permissions = new Integer(tr.readUINT32());
- }
-
- if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME) != 0)
- {
- if (debug != null)
- debug.println("SSH_FILEXFER_ATTR_V3_ACMODTIME");
- fa.atime = new Long(((long)tr.readUINT32()) & 0xffffffffl);
- fa.mtime = new Long(((long)tr.readUINT32()) & 0xffffffffl);
-
- }
-
- if ((flags & AttribFlags.SSH_FILEXFER_ATTR_EXTENDED) != 0)
- {
- int count = tr.readUINT32();
-
- if (debug != null)
- debug.println("SSH_FILEXFER_ATTR_EXTENDED (" + count + ")");
-
- /* Read it anyway to detect corrupt packets */
-
- while (count > 0)
- {
- tr.readByteString();
- tr.readByteString();
- count--;
- }
- }
-
- return fa;
- }
-
- /**
- * Retrieve the file attributes of an open file.
- *
- * @param handle a SFTPv3FileHandle handle.
- * @return a SFTPv3FileAttributes object.
- * @throws IOException
- */
- public SFTPv3FileAttributes fstat(SFTPv3FileHandle handle) throws IOException
- {
- checkHandleValidAndOpen(handle);
-
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_FSTAT...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_FSTAT, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_ATTRS)
- {
- return readAttrs(tr);
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- throw new SFTPException(tr.readString(), errorCode);
- }
-
- private SFTPv3FileAttributes statBoth(String path, int statMethod) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(path, charsetName);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_STAT/SSH_FXP_LSTAT...");
- debug.flush();
- }
-
- sendMessage(statMethod, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_ATTRS)
- {
- return readAttrs(tr);
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- throw new SFTPException(tr.readString(), errorCode);
- }
-
- /**
- * Retrieve the file attributes of a file. This method
- * follows symbolic links on the server.
- *
- * @see #lstat(String)
- *
- * @param path See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileAttributes object.
- * @throws IOException
- */
- public SFTPv3FileAttributes stat(String path) throws IOException
- {
- return statBoth(path, Packet.SSH_FXP_STAT);
- }
-
- /**
- * Retrieve the file attributes of a file. This method
- * does NOT follow symbolic links on the server.
- *
- * @see #stat(String)
- *
- * @param path See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileAttributes object.
- * @throws IOException
- */
- public SFTPv3FileAttributes lstat(String path) throws IOException
- {
- return statBoth(path, Packet.SSH_FXP_LSTAT);
- }
-
- /**
- * Read the target of a symbolic link.
- *
- * @param path See the {@link SFTPv3Client comment} for the class for more details.
- * @return The target of the link.
- * @throws IOException
- */
- public String readLink(String path) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(path, charsetName);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_READLINK...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_READLINK, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_NAME)
- {
- int count = tr.readUINT32();
-
- if (count != 1)
- throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");
-
- return tr.readString(charsetName);
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- throw new SFTPException(tr.readString(), errorCode);
- }
-
- private void expectStatusOKMessage(int id) throws IOException
- {
- byte[] resp = receiveMessage(34000);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- if (errorCode == ErrorCodes.SSH_FX_OK)
- return;
-
- throw new SFTPException(tr.readString(), errorCode);
- }
-
- /**
- * Modify the attributes of a file. Used for operations such as changing
- * the ownership, permissions or access times, as well as for truncating a file.
- *
- * @param path See the {@link SFTPv3Client comment} for the class for more details.
- * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be
- * made to the attributes of the file. Empty fields will be ignored.
- * @throws IOException
- */
- public void setstat(String path, SFTPv3FileAttributes attr) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(path, charsetName);
- tw.writeBytes(createAttrs(attr));
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_SETSTAT...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_SETSTAT, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Modify the attributes of a file. Used for operations such as changing
- * the ownership, permissions or access times, as well as for truncating a file.
- *
- * @param handle a SFTPv3FileHandle handle
- * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be
- * made to the attributes of the file. Empty fields will be ignored.
- * @throws IOException
- */
- public void fsetstat(SFTPv3FileHandle handle, SFTPv3FileAttributes attr) throws IOException
- {
- checkHandleValidAndOpen(handle);
-
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
- tw.writeBytes(createAttrs(attr));
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_FSETSTAT...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_FSETSTAT, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Create a symbolic link on the server. Creates a link "src" that points
- * to "target".
- *
- * @param src See the {@link SFTPv3Client comment} for the class for more details.
- * @param target See the {@link SFTPv3Client comment} for the class for more details.
- * @throws IOException
- */
- public void createSymlink(String src, String target) throws IOException
- {
- int req_id = generateNextRequestID();
-
- /* Either I am too stupid to understand the SFTP draft
- * or the OpenSSH guys changed the semantics of src and target.
- */
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(target, charsetName);
- tw.writeString(src, charsetName);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_SYMLINK...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_SYMLINK, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Have the server canonicalize any given path name to an absolute path.
- * This is useful for converting path names containing ".." components or
- * relative pathnames without a leading slash into absolute paths.
- *
- * @param path See the {@link SFTPv3Client comment} for the class for more details.
- * @return An absolute path.
- * @throws IOException
- */
- public String canonicalPath(String path) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(path, charsetName);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_REALPATH...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_REALPATH, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_NAME)
- {
- int count = tr.readUINT32();
-
- if (count != 1)
- throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");
-
- return tr.readString(charsetName);
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- throw new SFTPException(tr.readString(), errorCode);
- }
-
- private final Vector scanDirectory(byte[] handle) throws IOException
- {
- Vector files = new Vector();
-
- while (true)
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle, 0, handle.length);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_READDIR...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_READDIR, req_id, tw.getBytes());
-
- /* Some servers send here a packet with size > 34000 */
- /* To whom it may concern: please learn to read the specs. */
-
- byte[] resp = receiveMessage(65536);
-
- if (debug != null)
- {
- debug.println("Got REPLY.");
- debug.flush();
- }
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_NAME)
- {
- int count = tr.readUINT32();
-
- if (debug != null)
- debug.println("Parsing " + count + " name entries...");
-
- while (count > 0)
- {
- SFTPv3DirectoryEntry dirEnt = new SFTPv3DirectoryEntry();
-
- dirEnt.filename = tr.readString(charsetName);
- dirEnt.longEntry = tr.readString(charsetName);
-
- dirEnt.attributes = readAttrs(tr);
- files.addElement(dirEnt);
-
- if (debug != null)
- debug.println("File: '" + dirEnt.filename + "'");
- count--;
- }
- continue;
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- if (errorCode == ErrorCodes.SSH_FX_EOF)
- return files;
-
- throw new SFTPException(tr.readString(), errorCode);
- }
- }
-
- private final byte[] openDirectory(String path) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(path, charsetName);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_OPENDIR...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_HANDLE)
- {
- if (debug != null)
- {
- debug.println("Got SSH_FXP_HANDLE.");
- debug.flush();
- }
-
- byte[] handle = tr.readByteString();
- return handle;
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
- String errorMessage = tr.readString();
-
- throw new SFTPException(errorMessage, errorCode);
- }
-
- private final String expandString(byte[] b, int off, int len)
- {
- StringBuffer sb = new StringBuffer();
-
- for (int i = 0; i < len; i++)
- {
- int c = b[off + i] & 0xff;
-
- if ((c >= 32) && (c <= 126))
- {
- sb.append((char) c);
- }
- else
- {
- sb.append("{0x" + Integer.toHexString(c) + "}");
- }
- }
-
- return sb.toString();
- }
-
- private void init() throws IOException
- {
- /* Send SSH_FXP_INIT (version 3) */
-
- final int client_version = 3;
-
- if (debug != null)
- debug.println("Sending SSH_FXP_INIT (" + client_version + ")...");
-
- TypesWriter tw = new TypesWriter();
- tw.writeUINT32(client_version);
- sendMessage(Packet.SSH_FXP_INIT, 0, tw.getBytes());
-
- /* Receive SSH_FXP_VERSION */
-
- if (debug != null)
- debug.println("Waiting for SSH_FXP_VERSION...");
-
- TypesReader tr = new TypesReader(receiveMessage(34000)); /* Should be enough for any reasonable server */
-
- int type = tr.readByte();
-
- if (type != Packet.SSH_FXP_VERSION)
- {
- throw new IOException("The server did not send a SSH_FXP_VERSION packet (got " + type + ")");
- }
-
- protocol_version = tr.readUINT32();
-
- if (debug != null)
- debug.println("SSH_FXP_VERSION: protocol_version = " + protocol_version);
-
- if (protocol_version != 3)
- throw new IOException("Server version " + protocol_version + " is currently not supported");
-
- /* Read and save extensions (if any) for later use */
-
- while (tr.remain() != 0)
- {
- String name = tr.readString();
- byte[] value = tr.readByteString();
- server_extensions.put(name, value);
-
- if (debug != null)
- debug.println("SSH_FXP_VERSION: extension: " + name + " = '" + expandString(value, 0, value.length)
- + "'");
- }
- }
-
- /**
- * Returns the negotiated SFTP protocol version between the client and the server.
- *
- * @return SFTP protocol version, i.e., "3".
- *
- */
- public int getProtocolVersion()
- {
- return protocol_version;
- }
-
- /**
- * Close this SFTP session. NEVER forget to call this method to free up
- * resources - even if you got an exception from one of the other methods.
- * Sometimes these other methods may throw an exception, saying that the
- * underlying channel is closed (this can happen, e.g., if the other server
- * sent a close message.) However, as long as you have not called the
- * <code>close()</code> method, you are likely wasting resources.
- *
- */
- public void close()
- {
- sess.close();
- }
-
- /**
- * List the contents of a directory.
- *
- * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
- * @return A Vector containing {@link SFTPv3DirectoryEntry} objects.
- * @throws IOException
- */
- public Vector ls(String dirName) throws IOException
- {
- byte[] handle = openDirectory(dirName);
- Vector result = scanDirectory(handle);
- closeHandle(handle);
- return result;
- }
-
- /**
- * Create a new directory.
- *
- * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
- * @param posixPermissions the permissions for this directory, e.g., "0700" (remember that
- * this is octal noation). The server will likely apply a umask.
- *
- * @throws IOException
- */
- public void mkdir(String dirName, int posixPermissions) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(dirName, charsetName);
- tw.writeUINT32(AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS);
- tw.writeUINT32(posixPermissions);
-
- sendMessage(Packet.SSH_FXP_MKDIR, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Remove a file.
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @throws IOException
- */
- public void rm(String fileName) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(fileName, charsetName);
-
- sendMessage(Packet.SSH_FXP_REMOVE, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Remove an empty directory.
- *
- * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
- * @throws IOException
- */
- public void rmdir(String dirName) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(dirName, charsetName);
-
- sendMessage(Packet.SSH_FXP_RMDIR, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Move a file or directory.
- *
- * @param oldPath See the {@link SFTPv3Client comment} for the class for more details.
- * @param newPath See the {@link SFTPv3Client comment} for the class for more details.
- * @throws IOException
- */
- public void mv(String oldPath, String newPath) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(oldPath, charsetName);
- tw.writeString(newPath, charsetName);
-
- sendMessage(Packet.SSH_FXP_RENAME, req_id, tw.getBytes());
-
- expectStatusOKMessage(req_id);
- }
-
- /**
- * Open a file for reading.
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle openFileRO(String fileName) throws IOException
- {
- return openFile(fileName, 0x00000001, null); // SSH_FXF_READ
- }
-
- /**
- * Open a file for reading and writing.
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle openFileRW(String fileName) throws IOException
- {
- return openFile(fileName, 0x00000003, null); // SSH_FXF_READ | SSH_FXF_WRITE
- }
-
- // Append is broken (already in the specification, because there is no way to
- // send a write operation (what offset to use??))
- // public SFTPv3FileHandle openFileRWAppend(String fileName) throws IOException
- // {
- // return openFile(fileName, 0x00000007, null); // SSH_FXF_READ | SSH_FXF_WRITE | SSH_FXF_APPEND
- // }
-
- /**
- * Create a file and open it for reading and writing.
- * Same as {@link #createFile(String, SFTPv3FileAttributes) createFile(fileName, null)}.
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle createFile(String fileName) throws IOException
- {
- return createFile(fileName, null);
- }
-
- /**
- * Create a file and open it for reading and writing.
- * You can specify the default attributes of the file (the server may or may
- * not respect your wishes).
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @param attr may be <code>null</code> to use server defaults. Probably only
- * the <code>uid</code>, <code>gid</code> and <code>permissions</code>
- * (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle}
- * structure make sense. You need only to set those fields where you want
- * to override the server's defaults.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle createFile(String fileName, SFTPv3FileAttributes attr) throws IOException
- {
- return openFile(fileName, 0x00000008 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_READ | SSH_FXF_WRITE
- }
-
- /**
- * Create a file (truncate it if it already exists) and open it for reading and writing.
- * Same as {@link #createFileTruncate(String, SFTPv3FileAttributes) createFileTruncate(fileName, null)}.
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle createFileTruncate(String fileName) throws IOException
- {
- return createFileTruncate(fileName, null);
- }
-
- /**
- * reate a file (truncate it if it already exists) and open it for reading and writing.
- * You can specify the default attributes of the file (the server may or may
- * not respect your wishes).
- *
- * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
- * @param attr may be <code>null</code> to use server defaults. Probably only
- * the <code>uid</code>, <code>gid</code> and <code>permissions</code>
- * (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle}
- * structure make sense. You need only to set those fields where you want
- * to override the server's defaults.
- * @return a SFTPv3FileHandle handle
- * @throws IOException
- */
- public SFTPv3FileHandle createFileTruncate(String fileName, SFTPv3FileAttributes attr) throws IOException
- {
- return openFile(fileName, 0x00000018 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_TRUNC | SSH_FXF_READ | SSH_FXF_WRITE
- }
-
- private byte[] createAttrs(SFTPv3FileAttributes attr)
- {
- TypesWriter tw = new TypesWriter();
-
- int attrFlags = 0;
-
- if (attr == null)
- {
- tw.writeUINT32(0);
- }
- else
- {
- if (attr.size != null)
- attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_SIZE;
-
- if ((attr.uid != null) && (attr.gid != null))
- attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID;
-
- if (attr.permissions != null)
- attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS;
-
- if ((attr.atime != null) && (attr.mtime != null))
- attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME;
-
- tw.writeUINT32(attrFlags);
-
- if (attr.size != null)
- tw.writeUINT64(attr.size.longValue());
-
- if ((attr.uid != null) && (attr.gid != null))
- {
- tw.writeUINT32(attr.uid.intValue());
- tw.writeUINT32(attr.gid.intValue());
- }
-
- if (attr.permissions != null)
- tw.writeUINT32(attr.permissions.intValue());
-
- if ((attr.atime != null) && (attr.mtime != null))
- {
- tw.writeUINT32(attr.atime.intValue());
- tw.writeUINT32(attr.mtime.intValue());
- }
- }
-
- return tw.getBytes();
- }
-
- private SFTPv3FileHandle openFile(String fileName, int flags, SFTPv3FileAttributes attr) throws IOException
- {
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(fileName, charsetName);
- tw.writeUINT32(flags);
- tw.writeBytes(createAttrs(attr));
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_OPEN...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_OPEN, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_HANDLE)
- {
- if (debug != null)
- {
- debug.println("Got SSH_FXP_HANDLE.");
- debug.flush();
- }
-
- return new SFTPv3FileHandle(this, tr.readByteString());
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
- String errorMessage = tr.readString();
-
- throw new SFTPException(errorMessage, errorCode);
- }
-
- /**
- * Read bytes from a file. No more than 32768 bytes may be read at once.
- * Be aware that the semantics of read() are different than for Java streams.
- * <p>
- * <ul>
- * <li>The server will read as many bytes as it can from the file (up to <code>len</code>),
- * and return them.</li>
- * <li>If EOF is encountered before reading any data, <code>-1</code> is returned.
- * <li>If an error occurs, an exception is thrown</li>.
- * <li>For normal disk files, it is guaranteed that the server will return the specified
- * number of bytes, or up to end of file. For, e.g., device files this may return
- * fewer bytes than requested.</li>
- * </ul>
- *
- * @param handle a SFTPv3FileHandle handle
- * @param fileOffset offset (in bytes) in the file
- * @param dst the destination byte array
- * @param dstoff offset in the destination byte array
- * @param len how many bytes to read, 0 < len <= 32768 bytes
- * @return the number of bytes that could be read, may be less than requested if
- * the end of the file is reached, -1 is returned in case of <code>EOF</code>
- * @throws IOException
- */
- public int read(SFTPv3FileHandle handle, long fileOffset, byte[] dst, int dstoff, int len) throws IOException
- {
- checkHandleValidAndOpen(handle);
-
- if ((len > 32768) || (len <= 0))
- throw new IllegalArgumentException("invalid len argument");
-
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
- tw.writeUINT64(fileOffset);
- tw.writeUINT32(len);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_READ...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_READ, req_id, tw.getBytes());
-
- byte[] resp = receiveMessage(34000);
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t == Packet.SSH_FXP_DATA)
- {
- if (debug != null)
- {
- debug.println("Got SSH_FXP_DATA...");
- debug.flush();
- }
-
- int readLen = tr.readUINT32();
-
- if ((readLen < 0) || (readLen > len))
- throw new IOException("The server sent an invalid length field.");
-
- tr.readBytes(dst, dstoff, readLen);
-
- return readLen;
- }
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- if (errorCode == ErrorCodes.SSH_FX_EOF)
- {
- if (debug != null)
- {
- debug.println("Got SSH_FX_EOF.");
- debug.flush();
- }
-
- return -1;
- }
-
- String errorMessage = tr.readString();
-
- throw new SFTPException(errorMessage, errorCode);
- }
-
- /**
- * Write bytes to a file. If <code>len</code> > 32768, then the write operation will
- * be split into multiple writes.
- *
- * @param handle a SFTPv3FileHandle handle.
- * @param fileOffset offset (in bytes) in the file.
- * @param src the source byte array.
- * @param srcoff offset in the source byte array.
- * @param len how many bytes to write.
- * @throws IOException
- */
- public void write(SFTPv3FileHandle handle, long fileOffset, byte[] src, int srcoff, int len) throws IOException
- {
- checkHandleValidAndOpen(handle);
-
- while (len > 0)
- {
- int writeRequestLen = len;
-
- if (writeRequestLen > 32768)
- writeRequestLen = 32768;
-
- int req_id = generateNextRequestID();
-
- TypesWriter tw = new TypesWriter();
- tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
- tw.writeUINT64(fileOffset);
- tw.writeString(src, srcoff, writeRequestLen);
-
- if (debug != null)
- {
- debug.println("Sending SSH_FXP_WRITE...");
- debug.flush();
- }
-
- sendMessage(Packet.SSH_FXP_WRITE, req_id, tw.getBytes());
-
- fileOffset += writeRequestLen;
-
- srcoff += writeRequestLen;
- len -= writeRequestLen;
-
- byte[] resp = receiveMessage(34000);
-
- TypesReader tr = new TypesReader(resp);
-
- int t = tr.readByte();
-
- int rep_id = tr.readUINT32();
- if (rep_id != req_id)
- throw new IOException("The server sent an invalid id field.");
-
- if (t != Packet.SSH_FXP_STATUS)
- throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
- int errorCode = tr.readUINT32();
-
- if (errorCode == ErrorCodes.SSH_FX_OK)
- continue;
-
- String errorMessage = tr.readString();
-
- throw new SFTPException(errorMessage, errorCode);
- }
- }
-
- /**
- * Close a file.
- *
- * @param handle a SFTPv3FileHandle handle
- * @throws IOException
- */
- public void closeFile(SFTPv3FileHandle handle) throws IOException
- {
- if (handle == null)
- throw new IllegalArgumentException("the handle argument may not be null");
-
- try
- {
- if (handle.isClosed == false)
- {
- closeHandle(handle.fileHandle);
- }
- }
- finally
- {
- handle.isClosed = true;
- }
- }
-}
+ +package com.trilead.ssh2; + +import java.io.BufferedOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.PrintStream; +import java.nio.charset.Charset; +import java.util.HashMap; +import java.util.Vector; + +import com.trilead.ssh2.packets.TypesReader; +import com.trilead.ssh2.packets.TypesWriter; +import com.trilead.ssh2.sftp.AttribFlags; +import com.trilead.ssh2.sftp.ErrorCodes; +import com.trilead.ssh2.sftp.Packet; + + +/** + * A <code>SFTPv3Client</code> represents a SFTP (protocol version 3) + * client connection tunnelled over a SSH-2 connection. This is a very simple + * (synchronous) implementation. + * <p> + * Basically, most methods in this class map directly to one of + * the packet types described in draft-ietf-secsh-filexfer-02.txt. + * <p> + * Note: this is experimental code. + * <p> + * Error handling: the methods of this class throw IOExceptions. However, unless + * there is catastrophic failure, exceptions of the type {@link SFTPv3Client} will + * be thrown (a subclass of IOException). Therefore, you can implement more verbose + * behavior by checking if a thrown exception if of this type. If yes, then you + * can cast the exception and access detailed information about the failure. + * <p> + * Notes about file names, directory names and paths, copy-pasted + * from the specs: + * <ul> + * <li>SFTP v3 represents file names as strings. File names are + * assumed to use the slash ('/') character as a directory separator.</li> + * <li>File names starting with a slash are "absolute", and are relative to + * the root of the file system. Names starting with any other character + * are relative to the user's default directory (home directory).</li> + * <li>Servers SHOULD interpret a path name component ".." as referring to + * the parent directory, and "." as referring to the current directory. + * If the server implementation limits access to certain parts of the + * file system, it must be extra careful in parsing file names when + * enforcing such restrictions. There have been numerous reported + * security bugs where a ".." in a path name has allowed access outside + * the intended area.</li> + * <li>An empty path name is valid, and it refers to the user's default + * directory (usually the user's home directory).</li> + * </ul> + * <p> + * If you are still not tired then please go on and read the comment for + * {@link #setCharset(String)}. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SFTPv3Client.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $ + */ +public class SFTPv3Client +{ + final Connection conn; + final Session sess; + final PrintStream debug; + + boolean flag_closed = false; + + InputStream is; + OutputStream os; + + int protocol_version = 0; + HashMap server_extensions = new HashMap(); + + int next_request_id = 1000; + + String charsetName = null; + + /** + * Create a SFTP v3 client. + * + * @param conn The underlying SSH-2 connection to be used. + * @param debug + * @throws IOException + * + * @deprecated this constructor (debug version) will disappear in the future, + * use {@link #SFTPv3Client(Connection)} instead. + */ + public SFTPv3Client(Connection conn, PrintStream debug) throws IOException + { + if (conn == null) + throw new IllegalArgumentException("Cannot accept null argument!"); + + this.conn = conn; + this.debug = debug; + + if (debug != null) + debug.println("Opening session and starting SFTP subsystem."); + + sess = conn.openSession(); + sess.startSubSystem("sftp"); + + is = sess.getStdout(); + os = new BufferedOutputStream(sess.getStdin(), 2048); + + if ((is == null) || (os == null)) + throw new IOException("There is a problem with the streams of the underlying channel."); + + init(); + } + + /** + * Create a SFTP v3 client. + * + * @param conn The underlying SSH-2 connection to be used. + * @throws IOException + */ + public SFTPv3Client(Connection conn) throws IOException + { + this(conn, null); + } + + /** + * Set the charset used to convert between Java Unicode Strings and byte encodings + * used by the server for paths and file names. Unfortunately, the SFTP v3 draft + * says NOTHING about such conversions (well, with the exception of error messages + * which have to be in UTF-8). Newer drafts specify to use UTF-8 for file names + * (if I remember correctly). However, a quick test using OpenSSH serving a EXT-3 + * filesystem has shown that UTF-8 seems to be a bad choice for SFTP v3 (tested with + * filenames containing german umlauts). "windows-1252" seems to work better for Europe. + * Luckily, "windows-1252" is the platform default in my case =). + * <p> + * If you don't set anything, then the platform default will be used (this is the default + * behavior). + * + * @see #getCharset() + * + * @param charset the name of the charset to be used or <code>null</code> to use the platform's + * default encoding. + * @throws IOException + */ + public void setCharset(String charset) throws IOException + { + if (charset == null) + { + charsetName = charset; + return; + } + + try + { + Charset.forName(charset); + } + catch (Exception e) + { + throw (IOException) new IOException("This charset is not supported").initCause(e); + } + charsetName = charset; + } + + /** + * The currently used charset for filename encoding/decoding. + * + * @see #setCharset(String) + * + * @return The name of the charset (<code>null</code> if the platform's default charset is being used) + */ + public String getCharset() + { + return charsetName; + } + + private final void checkHandleValidAndOpen(SFTPv3FileHandle handle) throws IOException + { + if (handle.client != this) + throw new IOException("The file handle was created with another SFTPv3FileHandle instance."); + + if (handle.isClosed == true) + throw new IOException("The file handle is closed."); + } + + private final void sendMessage(int type, int requestId, byte[] msg, int off, int len) throws IOException + { + int msglen = len + 1; + + if (type != Packet.SSH_FXP_INIT) + msglen += 4; + + os.write(msglen >> 24); + os.write(msglen >> 16); + os.write(msglen >> 8); + os.write(msglen); + os.write(type); + + if (type != Packet.SSH_FXP_INIT) + { + os.write(requestId >> 24); + os.write(requestId >> 16); + os.write(requestId >> 8); + os.write(requestId); + } + + os.write(msg, off, len); + os.flush(); + } + + private final void sendMessage(int type, int requestId, byte[] msg) throws IOException + { + sendMessage(type, requestId, msg, 0, msg.length); + } + + private final void readBytes(byte[] buff, int pos, int len) throws IOException + { + while (len > 0) + { + int count = is.read(buff, pos, len); + if (count < 0) + throw new IOException("Unexpected end of sftp stream."); + if ((count == 0) || (count > len)) + throw new IOException("Underlying stream implementation is bogus!"); + len -= count; + pos += count; + } + } + + /** + * Read a message and guarantee that the <b>contents</b> is not larger than + * <code>maxlen</code> bytes. + * <p> + * Note: receiveMessage(34000) actually means that the message may be up to 34004 + * bytes (the length attribute preceeding the contents is 4 bytes). + * + * @param maxlen + * @return the message contents + * @throws IOException + */ + private final byte[] receiveMessage(int maxlen) throws IOException + { + byte[] msglen = new byte[4]; + + readBytes(msglen, 0, 4); + + int len = (((msglen[0] & 0xff) << 24) | ((msglen[1] & 0xff) << 16) | ((msglen[2] & 0xff) << 8) | (msglen[3] & 0xff)); + + if ((len > maxlen) || (len <= 0)) + throw new IOException("Illegal sftp packet len: " + len); + + byte[] msg = new byte[len]; + + readBytes(msg, 0, len); + + return msg; + } + + private final int generateNextRequestID() + { + synchronized (this) + { + return next_request_id++; + } + } + + private final void closeHandle(byte[] handle) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle, 0, handle.length); + + sendMessage(Packet.SSH_FXP_CLOSE, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + private SFTPv3FileAttributes readAttrs(TypesReader tr) throws IOException + { + /* + * uint32 flags + * uint64 size present only if flag SSH_FILEXFER_ATTR_SIZE + * uint32 uid present only if flag SSH_FILEXFER_ATTR_V3_UIDGID + * uint32 gid present only if flag SSH_FILEXFER_ATTR_V3_UIDGID + * uint32 permissions present only if flag SSH_FILEXFER_ATTR_PERMISSIONS + * uint32 atime present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME + * uint32 mtime present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME + * uint32 extended_count present only if flag SSH_FILEXFER_ATTR_EXTENDED + * string extended_type + * string extended_data + * ... more extended data (extended_type - extended_data pairs), + * so that number of pairs equals extended_count + */ + + SFTPv3FileAttributes fa = new SFTPv3FileAttributes(); + + int flags = tr.readUINT32(); + + if ((flags & AttribFlags.SSH_FILEXFER_ATTR_SIZE) != 0) + { + if (debug != null) + debug.println("SSH_FILEXFER_ATTR_SIZE"); + fa.size = new Long(tr.readUINT64()); + } + + if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID) != 0) + { + if (debug != null) + debug.println("SSH_FILEXFER_ATTR_V3_UIDGID"); + fa.uid = new Integer(tr.readUINT32()); + fa.gid = new Integer(tr.readUINT32()); + } + + if ((flags & AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS) != 0) + { + if (debug != null) + debug.println("SSH_FILEXFER_ATTR_PERMISSIONS"); + fa.permissions = new Integer(tr.readUINT32()); + } + + if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME) != 0) + { + if (debug != null) + debug.println("SSH_FILEXFER_ATTR_V3_ACMODTIME"); + fa.atime = new Long(((long)tr.readUINT32()) & 0xffffffffl); + fa.mtime = new Long(((long)tr.readUINT32()) & 0xffffffffl); + + } + + if ((flags & AttribFlags.SSH_FILEXFER_ATTR_EXTENDED) != 0) + { + int count = tr.readUINT32(); + + if (debug != null) + debug.println("SSH_FILEXFER_ATTR_EXTENDED (" + count + ")"); + + /* Read it anyway to detect corrupt packets */ + + while (count > 0) + { + tr.readByteString(); + tr.readByteString(); + count--; + } + } + + return fa; + } + + /** + * Retrieve the file attributes of an open file. + * + * @param handle a SFTPv3FileHandle handle. + * @return a SFTPv3FileAttributes object. + * @throws IOException + */ + public SFTPv3FileAttributes fstat(SFTPv3FileHandle handle) throws IOException + { + checkHandleValidAndOpen(handle); + + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle.fileHandle, 0, handle.fileHandle.length); + + if (debug != null) + { + debug.println("Sending SSH_FXP_FSTAT..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_FSTAT, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_ATTRS) + { + return readAttrs(tr); + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + throw new SFTPException(tr.readString(), errorCode); + } + + private SFTPv3FileAttributes statBoth(String path, int statMethod) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(path, charsetName); + + if (debug != null) + { + debug.println("Sending SSH_FXP_STAT/SSH_FXP_LSTAT..."); + debug.flush(); + } + + sendMessage(statMethod, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_ATTRS) + { + return readAttrs(tr); + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + throw new SFTPException(tr.readString(), errorCode); + } + + /** + * Retrieve the file attributes of a file. This method + * follows symbolic links on the server. + * + * @see #lstat(String) + * + * @param path See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileAttributes object. + * @throws IOException + */ + public SFTPv3FileAttributes stat(String path) throws IOException + { + return statBoth(path, Packet.SSH_FXP_STAT); + } + + /** + * Retrieve the file attributes of a file. This method + * does NOT follow symbolic links on the server. + * + * @see #stat(String) + * + * @param path See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileAttributes object. + * @throws IOException + */ + public SFTPv3FileAttributes lstat(String path) throws IOException + { + return statBoth(path, Packet.SSH_FXP_LSTAT); + } + + /** + * Read the target of a symbolic link. + * + * @param path See the {@link SFTPv3Client comment} for the class for more details. + * @return The target of the link. + * @throws IOException + */ + public String readLink(String path) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(path, charsetName); + + if (debug != null) + { + debug.println("Sending SSH_FXP_READLINK..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_READLINK, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_NAME) + { + int count = tr.readUINT32(); + + if (count != 1) + throw new IOException("The server sent an invalid SSH_FXP_NAME packet."); + + return tr.readString(charsetName); + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + throw new SFTPException(tr.readString(), errorCode); + } + + private void expectStatusOKMessage(int id) throws IOException + { + byte[] resp = receiveMessage(34000); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != id) + throw new IOException("The server sent an invalid id field."); + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + if (errorCode == ErrorCodes.SSH_FX_OK) + return; + + throw new SFTPException(tr.readString(), errorCode); + } + + /** + * Modify the attributes of a file. Used for operations such as changing + * the ownership, permissions or access times, as well as for truncating a file. + * + * @param path See the {@link SFTPv3Client comment} for the class for more details. + * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be + * made to the attributes of the file. Empty fields will be ignored. + * @throws IOException + */ + public void setstat(String path, SFTPv3FileAttributes attr) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(path, charsetName); + tw.writeBytes(createAttrs(attr)); + + if (debug != null) + { + debug.println("Sending SSH_FXP_SETSTAT..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_SETSTAT, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Modify the attributes of a file. Used for operations such as changing + * the ownership, permissions or access times, as well as for truncating a file. + * + * @param handle a SFTPv3FileHandle handle + * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be + * made to the attributes of the file. Empty fields will be ignored. + * @throws IOException + */ + public void fsetstat(SFTPv3FileHandle handle, SFTPv3FileAttributes attr) throws IOException + { + checkHandleValidAndOpen(handle); + + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle.fileHandle, 0, handle.fileHandle.length); + tw.writeBytes(createAttrs(attr)); + + if (debug != null) + { + debug.println("Sending SSH_FXP_FSETSTAT..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_FSETSTAT, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Create a symbolic link on the server. Creates a link "src" that points + * to "target". + * + * @param src See the {@link SFTPv3Client comment} for the class for more details. + * @param target See the {@link SFTPv3Client comment} for the class for more details. + * @throws IOException + */ + public void createSymlink(String src, String target) throws IOException + { + int req_id = generateNextRequestID(); + + /* Either I am too stupid to understand the SFTP draft + * or the OpenSSH guys changed the semantics of src and target. + */ + + TypesWriter tw = new TypesWriter(); + tw.writeString(target, charsetName); + tw.writeString(src, charsetName); + + if (debug != null) + { + debug.println("Sending SSH_FXP_SYMLINK..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_SYMLINK, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Have the server canonicalize any given path name to an absolute path. + * This is useful for converting path names containing ".." components or + * relative pathnames without a leading slash into absolute paths. + * + * @param path See the {@link SFTPv3Client comment} for the class for more details. + * @return An absolute path. + * @throws IOException + */ + public String canonicalPath(String path) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(path, charsetName); + + if (debug != null) + { + debug.println("Sending SSH_FXP_REALPATH..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_REALPATH, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_NAME) + { + int count = tr.readUINT32(); + + if (count != 1) + throw new IOException("The server sent an invalid SSH_FXP_NAME packet."); + + return tr.readString(charsetName); + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + throw new SFTPException(tr.readString(), errorCode); + } + + private final Vector scanDirectory(byte[] handle) throws IOException + { + Vector files = new Vector(); + + while (true) + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle, 0, handle.length); + + if (debug != null) + { + debug.println("Sending SSH_FXP_READDIR..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_READDIR, req_id, tw.getBytes()); + + /* Some servers send here a packet with size > 34000 */ + /* To whom it may concern: please learn to read the specs. */ + + byte[] resp = receiveMessage(65536); + + if (debug != null) + { + debug.println("Got REPLY."); + debug.flush(); + } + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_NAME) + { + int count = tr.readUINT32(); + + if (debug != null) + debug.println("Parsing " + count + " name entries..."); + + while (count > 0) + { + SFTPv3DirectoryEntry dirEnt = new SFTPv3DirectoryEntry(); + + dirEnt.filename = tr.readString(charsetName); + dirEnt.longEntry = tr.readString(charsetName); + + dirEnt.attributes = readAttrs(tr); + files.addElement(dirEnt); + + if (debug != null) + debug.println("File: '" + dirEnt.filename + "'"); + count--; + } + continue; + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + if (errorCode == ErrorCodes.SSH_FX_EOF) + return files; + + throw new SFTPException(tr.readString(), errorCode); + } + } + + private final byte[] openDirectory(String path) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(path, charsetName); + + if (debug != null) + { + debug.println("Sending SSH_FXP_OPENDIR..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_HANDLE) + { + if (debug != null) + { + debug.println("Got SSH_FXP_HANDLE."); + debug.flush(); + } + + byte[] handle = tr.readByteString(); + return handle; + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + String errorMessage = tr.readString(); + + throw new SFTPException(errorMessage, errorCode); + } + + private final String expandString(byte[] b, int off, int len) + { + StringBuffer sb = new StringBuffer(); + + for (int i = 0; i < len; i++) + { + int c = b[off + i] & 0xff; + + if ((c >= 32) && (c <= 126)) + { + sb.append((char) c); + } + else + { + sb.append("{0x" + Integer.toHexString(c) + "}"); + } + } + + return sb.toString(); + } + + private void init() throws IOException + { + /* Send SSH_FXP_INIT (version 3) */ + + final int client_version = 3; + + if (debug != null) + debug.println("Sending SSH_FXP_INIT (" + client_version + ")..."); + + TypesWriter tw = new TypesWriter(); + tw.writeUINT32(client_version); + sendMessage(Packet.SSH_FXP_INIT, 0, tw.getBytes()); + + /* Receive SSH_FXP_VERSION */ + + if (debug != null) + debug.println("Waiting for SSH_FXP_VERSION..."); + + TypesReader tr = new TypesReader(receiveMessage(34000)); /* Should be enough for any reasonable server */ + + int type = tr.readByte(); + + if (type != Packet.SSH_FXP_VERSION) + { + throw new IOException("The server did not send a SSH_FXP_VERSION packet (got " + type + ")"); + } + + protocol_version = tr.readUINT32(); + + if (debug != null) + debug.println("SSH_FXP_VERSION: protocol_version = " + protocol_version); + + if (protocol_version != 3) + throw new IOException("Server version " + protocol_version + " is currently not supported"); + + /* Read and save extensions (if any) for later use */ + + while (tr.remain() != 0) + { + String name = tr.readString(); + byte[] value = tr.readByteString(); + server_extensions.put(name, value); + + if (debug != null) + debug.println("SSH_FXP_VERSION: extension: " + name + " = '" + expandString(value, 0, value.length) + + "'"); + } + } + + /** + * Returns the negotiated SFTP protocol version between the client and the server. + * + * @return SFTP protocol version, i.e., "3". + * + */ + public int getProtocolVersion() + { + return protocol_version; + } + + /** + * Close this SFTP session. NEVER forget to call this method to free up + * resources - even if you got an exception from one of the other methods. + * Sometimes these other methods may throw an exception, saying that the + * underlying channel is closed (this can happen, e.g., if the other server + * sent a close message.) However, as long as you have not called the + * <code>close()</code> method, you are likely wasting resources. + * + */ + public void close() + { + sess.close(); + } + + /** + * List the contents of a directory. + * + * @param dirName See the {@link SFTPv3Client comment} for the class for more details. + * @return A Vector containing {@link SFTPv3DirectoryEntry} objects. + * @throws IOException + */ + public Vector ls(String dirName) throws IOException + { + byte[] handle = openDirectory(dirName); + Vector result = scanDirectory(handle); + closeHandle(handle); + return result; + } + + /** + * Create a new directory. + * + * @param dirName See the {@link SFTPv3Client comment} for the class for more details. + * @param posixPermissions the permissions for this directory, e.g., "0700" (remember that + * this is octal noation). The server will likely apply a umask. + * + * @throws IOException + */ + public void mkdir(String dirName, int posixPermissions) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(dirName, charsetName); + tw.writeUINT32(AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS); + tw.writeUINT32(posixPermissions); + + sendMessage(Packet.SSH_FXP_MKDIR, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Remove a file. + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @throws IOException + */ + public void rm(String fileName) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(fileName, charsetName); + + sendMessage(Packet.SSH_FXP_REMOVE, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Remove an empty directory. + * + * @param dirName See the {@link SFTPv3Client comment} for the class for more details. + * @throws IOException + */ + public void rmdir(String dirName) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(dirName, charsetName); + + sendMessage(Packet.SSH_FXP_RMDIR, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Move a file or directory. + * + * @param oldPath See the {@link SFTPv3Client comment} for the class for more details. + * @param newPath See the {@link SFTPv3Client comment} for the class for more details. + * @throws IOException + */ + public void mv(String oldPath, String newPath) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(oldPath, charsetName); + tw.writeString(newPath, charsetName); + + sendMessage(Packet.SSH_FXP_RENAME, req_id, tw.getBytes()); + + expectStatusOKMessage(req_id); + } + + /** + * Open a file for reading. + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle openFileRO(String fileName) throws IOException + { + return openFile(fileName, 0x00000001, null); // SSH_FXF_READ + } + + /** + * Open a file for reading and writing. + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle openFileRW(String fileName) throws IOException + { + return openFile(fileName, 0x00000003, null); // SSH_FXF_READ | SSH_FXF_WRITE + } + + // Append is broken (already in the specification, because there is no way to + // send a write operation (what offset to use??)) + // public SFTPv3FileHandle openFileRWAppend(String fileName) throws IOException + // { + // return openFile(fileName, 0x00000007, null); // SSH_FXF_READ | SSH_FXF_WRITE | SSH_FXF_APPEND + // } + + /** + * Create a file and open it for reading and writing. + * Same as {@link #createFile(String, SFTPv3FileAttributes) createFile(fileName, null)}. + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle createFile(String fileName) throws IOException + { + return createFile(fileName, null); + } + + /** + * Create a file and open it for reading and writing. + * You can specify the default attributes of the file (the server may or may + * not respect your wishes). + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @param attr may be <code>null</code> to use server defaults. Probably only + * the <code>uid</code>, <code>gid</code> and <code>permissions</code> + * (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle} + * structure make sense. You need only to set those fields where you want + * to override the server's defaults. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle createFile(String fileName, SFTPv3FileAttributes attr) throws IOException + { + return openFile(fileName, 0x00000008 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_READ | SSH_FXF_WRITE + } + + /** + * Create a file (truncate it if it already exists) and open it for reading and writing. + * Same as {@link #createFileTruncate(String, SFTPv3FileAttributes) createFileTruncate(fileName, null)}. + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle createFileTruncate(String fileName) throws IOException + { + return createFileTruncate(fileName, null); + } + + /** + * reate a file (truncate it if it already exists) and open it for reading and writing. + * You can specify the default attributes of the file (the server may or may + * not respect your wishes). + * + * @param fileName See the {@link SFTPv3Client comment} for the class for more details. + * @param attr may be <code>null</code> to use server defaults. Probably only + * the <code>uid</code>, <code>gid</code> and <code>permissions</code> + * (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle} + * structure make sense. You need only to set those fields where you want + * to override the server's defaults. + * @return a SFTPv3FileHandle handle + * @throws IOException + */ + public SFTPv3FileHandle createFileTruncate(String fileName, SFTPv3FileAttributes attr) throws IOException + { + return openFile(fileName, 0x00000018 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_TRUNC | SSH_FXF_READ | SSH_FXF_WRITE + } + + private byte[] createAttrs(SFTPv3FileAttributes attr) + { + TypesWriter tw = new TypesWriter(); + + int attrFlags = 0; + + if (attr == null) + { + tw.writeUINT32(0); + } + else + { + if (attr.size != null) + attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_SIZE; + + if ((attr.uid != null) && (attr.gid != null)) + attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID; + + if (attr.permissions != null) + attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS; + + if ((attr.atime != null) && (attr.mtime != null)) + attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME; + + tw.writeUINT32(attrFlags); + + if (attr.size != null) + tw.writeUINT64(attr.size.longValue()); + + if ((attr.uid != null) && (attr.gid != null)) + { + tw.writeUINT32(attr.uid.intValue()); + tw.writeUINT32(attr.gid.intValue()); + } + + if (attr.permissions != null) + tw.writeUINT32(attr.permissions.intValue()); + + if ((attr.atime != null) && (attr.mtime != null)) + { + tw.writeUINT32(attr.atime.intValue()); + tw.writeUINT32(attr.mtime.intValue()); + } + } + + return tw.getBytes(); + } + + private SFTPv3FileHandle openFile(String fileName, int flags, SFTPv3FileAttributes attr) throws IOException + { + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(fileName, charsetName); + tw.writeUINT32(flags); + tw.writeBytes(createAttrs(attr)); + + if (debug != null) + { + debug.println("Sending SSH_FXP_OPEN..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_OPEN, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_HANDLE) + { + if (debug != null) + { + debug.println("Got SSH_FXP_HANDLE."); + debug.flush(); + } + + return new SFTPv3FileHandle(this, tr.readByteString()); + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + String errorMessage = tr.readString(); + + throw new SFTPException(errorMessage, errorCode); + } + + /** + * Read bytes from a file. No more than 32768 bytes may be read at once. + * Be aware that the semantics of read() are different than for Java streams. + * <p> + * <ul> + * <li>The server will read as many bytes as it can from the file (up to <code>len</code>), + * and return them.</li> + * <li>If EOF is encountered before reading any data, <code>-1</code> is returned. + * <li>If an error occurs, an exception is thrown</li>. + * <li>For normal disk files, it is guaranteed that the server will return the specified + * number of bytes, or up to end of file. For, e.g., device files this may return + * fewer bytes than requested.</li> + * </ul> + * + * @param handle a SFTPv3FileHandle handle + * @param fileOffset offset (in bytes) in the file + * @param dst the destination byte array + * @param dstoff offset in the destination byte array + * @param len how many bytes to read, 0 < len <= 32768 bytes + * @return the number of bytes that could be read, may be less than requested if + * the end of the file is reached, -1 is returned in case of <code>EOF</code> + * @throws IOException + */ + public int read(SFTPv3FileHandle handle, long fileOffset, byte[] dst, int dstoff, int len) throws IOException + { + checkHandleValidAndOpen(handle); + + if ((len > 32768) || (len <= 0)) + throw new IllegalArgumentException("invalid len argument"); + + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle.fileHandle, 0, handle.fileHandle.length); + tw.writeUINT64(fileOffset); + tw.writeUINT32(len); + + if (debug != null) + { + debug.println("Sending SSH_FXP_READ..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_READ, req_id, tw.getBytes()); + + byte[] resp = receiveMessage(34000); + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t == Packet.SSH_FXP_DATA) + { + if (debug != null) + { + debug.println("Got SSH_FXP_DATA..."); + debug.flush(); + } + + int readLen = tr.readUINT32(); + + if ((readLen < 0) || (readLen > len)) + throw new IOException("The server sent an invalid length field."); + + tr.readBytes(dst, dstoff, readLen); + + return readLen; + } + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + if (errorCode == ErrorCodes.SSH_FX_EOF) + { + if (debug != null) + { + debug.println("Got SSH_FX_EOF."); + debug.flush(); + } + + return -1; + } + + String errorMessage = tr.readString(); + + throw new SFTPException(errorMessage, errorCode); + } + + /** + * Write bytes to a file. If <code>len</code> > 32768, then the write operation will + * be split into multiple writes. + * + * @param handle a SFTPv3FileHandle handle. + * @param fileOffset offset (in bytes) in the file. + * @param src the source byte array. + * @param srcoff offset in the source byte array. + * @param len how many bytes to write. + * @throws IOException + */ + public void write(SFTPv3FileHandle handle, long fileOffset, byte[] src, int srcoff, int len) throws IOException + { + checkHandleValidAndOpen(handle); + + while (len > 0) + { + int writeRequestLen = len; + + if (writeRequestLen > 32768) + writeRequestLen = 32768; + + int req_id = generateNextRequestID(); + + TypesWriter tw = new TypesWriter(); + tw.writeString(handle.fileHandle, 0, handle.fileHandle.length); + tw.writeUINT64(fileOffset); + tw.writeString(src, srcoff, writeRequestLen); + + if (debug != null) + { + debug.println("Sending SSH_FXP_WRITE..."); + debug.flush(); + } + + sendMessage(Packet.SSH_FXP_WRITE, req_id, tw.getBytes()); + + fileOffset += writeRequestLen; + + srcoff += writeRequestLen; + len -= writeRequestLen; + + byte[] resp = receiveMessage(34000); + + TypesReader tr = new TypesReader(resp); + + int t = tr.readByte(); + + int rep_id = tr.readUINT32(); + if (rep_id != req_id) + throw new IOException("The server sent an invalid id field."); + + if (t != Packet.SSH_FXP_STATUS) + throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")"); + + int errorCode = tr.readUINT32(); + + if (errorCode == ErrorCodes.SSH_FX_OK) + continue; + + String errorMessage = tr.readString(); + + throw new SFTPException(errorMessage, errorCode); + } + } + + /** + * Close a file. + * + * @param handle a SFTPv3FileHandle handle + * @throws IOException + */ + public void closeFile(SFTPv3FileHandle handle) throws IOException + { + if (handle == null) + throw new IllegalArgumentException("the handle argument may not be null"); + + try + { + if (handle.isClosed == false) + { + closeHandle(handle.fileHandle); + } + } + finally + { + handle.isClosed = true; + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java b/lib/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java index 370aefa..669ba87 100644 --- a/lib/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java +++ b/lib/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java @@ -1,38 +1,38 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3DirectoryEntry</code> as returned by {@link SFTPv3Client#ls(String)}.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3DirectoryEntry.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPv3DirectoryEntry
-{
- /**
- * A relative name within the directory, without any path components.
- */
- public String filename;
-
- /**
- * An expanded format for the file name, similar to what is returned by
- * "ls -l" on Un*x systems.
- * <p>
- * The format of this field is unspecified by the SFTP v3 protocol.
- * It MUST be suitable for use in the output of a directory listing
- * command (in fact, the recommended operation for a directory listing
- * command is to simply display this data). However, clients SHOULD NOT
- * attempt to parse the longname field for file attributes; they SHOULD
- * use the attrs field instead.
- * <p>
- * The recommended format for the longname field is as follows:<br>
- * <code>-rwxr-xr-x 1 mjos staff 348911 Mar 25 14:29 t-filexfer</code>
- */
- public String longEntry;
-
- /**
- * The attributes of this entry.
- */
- public SFTPv3FileAttributes attributes;
-}
+ +package com.trilead.ssh2; + +/** + * A <code>SFTPv3DirectoryEntry</code> as returned by {@link SFTPv3Client#ls(String)}. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SFTPv3DirectoryEntry.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class SFTPv3DirectoryEntry +{ + /** + * A relative name within the directory, without any path components. + */ + public String filename; + + /** + * An expanded format for the file name, similar to what is returned by + * "ls -l" on Un*x systems. + * <p> + * The format of this field is unspecified by the SFTP v3 protocol. + * It MUST be suitable for use in the output of a directory listing + * command (in fact, the recommended operation for a directory listing + * command is to simply display this data). However, clients SHOULD NOT + * attempt to parse the longname field for file attributes; they SHOULD + * use the attrs field instead. + * <p> + * The recommended format for the longname field is as follows:<br> + * <code>-rwxr-xr-x 1 mjos staff 348911 Mar 25 14:29 t-filexfer</code> + */ + public String longEntry; + + /** + * The attributes of this entry. + */ + public SFTPv3FileAttributes attributes; +} diff --git a/lib/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java b/lib/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java index 56c9c87..7b1d321 100644 --- a/lib/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java +++ b/lib/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java @@ -1,145 +1,145 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3FileAttributes</code> object represents detail information
- * about a file on the server. Not all fields may/must be present.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3FileAttributes.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class SFTPv3FileAttributes
-{
- /**
- * The SIZE attribute. <code>NULL</code> if not present.
- */
- public Long size = null;
-
- /**
- * The UID attribute. <code>NULL</code> if not present.
- */
- public Integer uid = null;
-
- /**
- * The GID attribute. <code>NULL</code> if not present.
- */
- public Integer gid = null;
-
- /**
- * The POSIX permissions. <code>NULL</code> if not present.
- * <p>
- * Here is a list:
- * <p>
- * <pre>Note: these numbers are all OCTAL.
- *
- * S_IFMT 0170000 bitmask for the file type bitfields
- * S_IFSOCK 0140000 socket
- * S_IFLNK 0120000 symbolic link
- * S_IFREG 0100000 regular file
- * S_IFBLK 0060000 block device
- * S_IFDIR 0040000 directory
- * S_IFCHR 0020000 character device
- * S_IFIFO 0010000 fifo
- * S_ISUID 0004000 set UID bit
- * S_ISGID 0002000 set GID bit
- * S_ISVTX 0001000 sticky bit
- *
- * S_IRWXU 00700 mask for file owner permissions
- * S_IRUSR 00400 owner has read permission
- * S_IWUSR 00200 owner has write permission
- * S_IXUSR 00100 owner has execute permission
- * S_IRWXG 00070 mask for group permissions
- * S_IRGRP 00040 group has read permission
- * S_IWGRP 00020 group has write permission
- * S_IXGRP 00010 group has execute permission
- * S_IRWXO 00007 mask for permissions for others (not in group)
- * S_IROTH 00004 others have read permission
- * S_IWOTH 00002 others have write permisson
- * S_IXOTH 00001 others have execute permission
- * </pre>
- */
- public Integer permissions = null;
-
- /**
- * The ATIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
- * <code>NULL</code> if not present.
- */
- public Long atime = null;
-
- /**
- * The MTIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
- * <code>NULL</code> if not present.
- */
- public Long mtime = null;
-
- /**
- * Checks if this entry is a directory.
- *
- * @return Returns true if permissions are available and they indicate
- * that this entry represents a directory.
- */
- public boolean isDirectory()
- {
- if (permissions == null)
- return false;
-
- return ((permissions.intValue() & 0040000) != 0);
- }
-
- /**
- * Checks if this entry is a regular file.
- *
- * @return Returns true if permissions are available and they indicate
- * that this entry represents a regular file.
- */
- public boolean isRegularFile()
- {
- if (permissions == null)
- return false;
-
- return ((permissions.intValue() & 0100000) != 0);
- }
-
- /**
- * Checks if this entry is a a symlink.
- *
- * @return Returns true if permissions are available and they indicate
- * that this entry represents a symlink.
- */
- public boolean isSymlink()
- {
- if (permissions == null)
- return false;
-
- return ((permissions.intValue() & 0120000) != 0);
- }
-
- /**
- * Turn the POSIX permissions into a 7 digit octal representation.
- * Note: the returned value is first masked with <code>0177777</code>.
- *
- * @return <code>NULL</code> if permissions are not available.
- */
- public String getOctalPermissions()
- {
- if (permissions == null)
- return null;
-
- String res = Integer.toString(permissions.intValue() & 0177777, 8);
-
- StringBuffer sb = new StringBuffer();
-
- int leadingZeros = 7 - res.length();
-
- while (leadingZeros > 0)
- {
- sb.append('0');
- leadingZeros--;
- }
-
- sb.append(res);
-
- return sb.toString();
- }
-}
+ +package com.trilead.ssh2; + +/** + * A <code>SFTPv3FileAttributes</code> object represents detail information + * about a file on the server. Not all fields may/must be present. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SFTPv3FileAttributes.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ + +public class SFTPv3FileAttributes +{ + /** + * The SIZE attribute. <code>NULL</code> if not present. + */ + public Long size = null; + + /** + * The UID attribute. <code>NULL</code> if not present. + */ + public Integer uid = null; + + /** + * The GID attribute. <code>NULL</code> if not present. + */ + public Integer gid = null; + + /** + * The POSIX permissions. <code>NULL</code> if not present. + * <p> + * Here is a list: + * <p> + * <pre>Note: these numbers are all OCTAL. + * + * S_IFMT 0170000 bitmask for the file type bitfields + * S_IFSOCK 0140000 socket + * S_IFLNK 0120000 symbolic link + * S_IFREG 0100000 regular file + * S_IFBLK 0060000 block device + * S_IFDIR 0040000 directory + * S_IFCHR 0020000 character device + * S_IFIFO 0010000 fifo + * S_ISUID 0004000 set UID bit + * S_ISGID 0002000 set GID bit + * S_ISVTX 0001000 sticky bit + * + * S_IRWXU 00700 mask for file owner permissions + * S_IRUSR 00400 owner has read permission + * S_IWUSR 00200 owner has write permission + * S_IXUSR 00100 owner has execute permission + * S_IRWXG 00070 mask for group permissions + * S_IRGRP 00040 group has read permission + * S_IWGRP 00020 group has write permission + * S_IXGRP 00010 group has execute permission + * S_IRWXO 00007 mask for permissions for others (not in group) + * S_IROTH 00004 others have read permission + * S_IWOTH 00002 others have write permisson + * S_IXOTH 00001 others have execute permission + * </pre> + */ + public Integer permissions = null; + + /** + * The ATIME attribute. Represented as seconds from Jan 1, 1970 in UTC. + * <code>NULL</code> if not present. + */ + public Long atime = null; + + /** + * The MTIME attribute. Represented as seconds from Jan 1, 1970 in UTC. + * <code>NULL</code> if not present. + */ + public Long mtime = null; + + /** + * Checks if this entry is a directory. + * + * @return Returns true if permissions are available and they indicate + * that this entry represents a directory. + */ + public boolean isDirectory() + { + if (permissions == null) + return false; + + return ((permissions.intValue() & 0040000) != 0); + } + + /** + * Checks if this entry is a regular file. + * + * @return Returns true if permissions are available and they indicate + * that this entry represents a regular file. + */ + public boolean isRegularFile() + { + if (permissions == null) + return false; + + return ((permissions.intValue() & 0100000) != 0); + } + + /** + * Checks if this entry is a a symlink. + * + * @return Returns true if permissions are available and they indicate + * that this entry represents a symlink. + */ + public boolean isSymlink() + { + if (permissions == null) + return false; + + return ((permissions.intValue() & 0120000) != 0); + } + + /** + * Turn the POSIX permissions into a 7 digit octal representation. + * Note: the returned value is first masked with <code>0177777</code>. + * + * @return <code>NULL</code> if permissions are not available. + */ + public String getOctalPermissions() + { + if (permissions == null) + return null; + + String res = Integer.toString(permissions.intValue() & 0177777, 8); + + StringBuffer sb = new StringBuffer(); + + int leadingZeros = 7 - res.length(); + + while (leadingZeros > 0) + { + sb.append('0'); + leadingZeros--; + } + + sb.append(res); + + return sb.toString(); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java b/lib/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java index c8b5477..9b3dbb6 100644 --- a/lib/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java +++ b/lib/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java @@ -1,45 +1,45 @@ -
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3FileHandle</code>.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3FileHandle.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPv3FileHandle
-{
- final SFTPv3Client client;
- final byte[] fileHandle;
- boolean isClosed = false;
-
- /* The constructor is NOT public */
-
- SFTPv3FileHandle(SFTPv3Client client, byte[] h)
- {
- this.client = client;
- this.fileHandle = h;
- }
-
- /**
- * Get the SFTPv3Client instance which created this handle.
- *
- * @return A SFTPv3Client instance.
- */
- public SFTPv3Client getClient()
- {
- return client;
- }
-
- /**
- * Check if this handle was closed with the {@link SFTPv3Client#closeFile(SFTPv3FileHandle)} method
- * of the <code>SFTPv3Client</code> instance which created the handle.
- *
- * @return if the handle is closed.
- */
- public boolean isClosed()
- {
- return isClosed;
- }
-}
+ +package com.trilead.ssh2; + +/** + * A <code>SFTPv3FileHandle</code>. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SFTPv3FileHandle.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class SFTPv3FileHandle +{ + final SFTPv3Client client; + final byte[] fileHandle; + boolean isClosed = false; + + /* The constructor is NOT public */ + + SFTPv3FileHandle(SFTPv3Client client, byte[] h) + { + this.client = client; + this.fileHandle = h; + } + + /** + * Get the SFTPv3Client instance which created this handle. + * + * @return A SFTPv3Client instance. + */ + public SFTPv3Client getClient() + { + return client; + } + + /** + * Check if this handle was closed with the {@link SFTPv3Client#closeFile(SFTPv3FileHandle)} method + * of the <code>SFTPv3Client</code> instance which created the handle. + * + * @return if the handle is closed. + */ + public boolean isClosed() + { + return isClosed; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java b/lib/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java index 1c33454..ac65955 100644 --- a/lib/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java +++ b/lib/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java @@ -1,31 +1,31 @@ -
-package com.trilead.ssh2;
-
-/**
- * A callback interface used to implement a client specific method of checking
- * server host keys.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ServerHostKeyVerifier.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface ServerHostKeyVerifier
-{
- /**
- * The actual verifier method, it will be called by the key exchange code
- * on EVERY key exchange - this can happen several times during the lifetime
- * of a connection.
- * <p>
- * Note: SSH-2 servers are allowed to change their hostkey at ANY time.
- *
- * @param hostname the hostname used to create the {@link Connection} object
- * @param port the remote TCP port
- * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>)
- * @param serverHostKey the server's public key blob
- * @return if the client wants to accept the server's host key - if not, the
- * connection will be closed.
- * @throws Exception Will be wrapped with an IOException, extended version of returning false =)
- */
- public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)
- throws Exception;
-}
+ +package com.trilead.ssh2; + +/** + * A callback interface used to implement a client specific method of checking + * server host keys. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ServerHostKeyVerifier.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public interface ServerHostKeyVerifier +{ + /** + * The actual verifier method, it will be called by the key exchange code + * on EVERY key exchange - this can happen several times during the lifetime + * of a connection. + * <p> + * Note: SSH-2 servers are allowed to change their hostkey at ANY time. + * + * @param hostname the hostname used to create the {@link Connection} object + * @param port the remote TCP port + * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>) + * @param serverHostKey the server's public key blob + * @return if the client wants to accept the server's host key - if not, the + * connection will be closed. + * @throws Exception Will be wrapped with an IOException, extended version of returning false =) + */ + public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey) + throws Exception; +} diff --git a/lib/src/main/java/com/trilead/ssh2/Session.java b/lib/src/main/java/com/trilead/ssh2/Session.java index fa0c36f..bf3c7e0 100644 --- a/lib/src/main/java/com/trilead/ssh2/Session.java +++ b/lib/src/main/java/com/trilead/ssh2/Session.java @@ -1,530 +1,530 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.channel.Channel;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.X11ServerData;
-
-
-/**
- * A <code>Session</code> is a remote execution of a program. "Program" means
- * in this context either a shell, an application or a system command. The
- * program may or may not have a tty. Only one single program can be started on
- * a session. However, multiple sessions can be active simultaneously.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Session.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-public class Session
-{
- ChannelManager cm;
- Channel cn;
-
- boolean flag_pty_requested = false;
- boolean flag_x11_requested = false;
- boolean flag_execution_started = false;
- boolean flag_closed = false;
-
- String x11FakeCookie = null;
-
- final SecureRandom rnd;
-
- Session(ChannelManager cm, SecureRandom rnd) throws IOException
- {
- this.cm = cm;
- this.cn = cm.openSessionChannel();
- this.rnd = rnd;
- }
-
- /**
- * Basically just a wrapper for lazy people - identical to calling
- * <code>requestPTY("dumb", 0, 0, 0, 0, null)</code>.
- *
- * @throws IOException
- */
- public void requestDumbPTY() throws IOException
- {
- requestPTY("dumb", 0, 0, 0, 0, null);
- }
-
- /**
- * Basically just another wrapper for lazy people - identical to calling
- * <code>requestPTY(term, 0, 0, 0, 0, null)</code>.
- *
- * @throws IOException
- */
- public void requestPTY(String term) throws IOException
- {
- requestPTY(term, 0, 0, 0, 0, null);
- }
-
- /**
- * Allocate a pseudo-terminal for this session.
- * <p>
- * This method may only be called before a program or shell is started in
- * this session.
- * <p>
- * Different aspects can be specified:
- * <p>
- * <ul>
- * <li>The TERM environment variable value (e.g., vt100)</li>
- * <li>The terminal's dimensions.</li>
- * <li>The encoded terminal modes.</li>
- * </ul>
- * Zero dimension parameters are ignored. The character/row dimensions
- * override the pixel dimensions (when nonzero). Pixel dimensions refer to
- * the drawable area of the window. The dimension parameters are only
- * informational. The encoding of terminal modes (parameter
- * <code>terminal_modes</code>) is described in RFC4254.
- *
- * @param term
- * The TERM environment variable value (e.g., vt100)
- * @param term_width_characters
- * terminal width, characters (e.g., 80)
- * @param term_height_characters
- * terminal height, rows (e.g., 24)
- * @param term_width_pixels
- * terminal width, pixels (e.g., 640)
- * @param term_height_pixels
- * terminal height, pixels (e.g., 480)
- * @param terminal_modes
- * encoded terminal modes (may be <code>null</code>)
- * @throws IOException
- */
- public void requestPTY(String term, int term_width_characters, int term_height_characters, int term_width_pixels,
- int term_height_pixels, byte[] terminal_modes) throws IOException
- {
- if (term == null)
- throw new IllegalArgumentException("TERM cannot be null.");
-
- if ((terminal_modes != null) && (terminal_modes.length > 0))
- {
- if (terminal_modes[terminal_modes.length - 1] != 0)
- throw new IOException("Illegal terminal modes description, does not end in zero byte");
- }
- else
- terminal_modes = new byte[] { 0 };
-
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
-
- if (flag_pty_requested)
- throw new IOException("A PTY was already requested.");
-
- if (flag_execution_started)
- throw new IOException(
- "Cannot request PTY at this stage anymore, a remote execution has already started.");
-
- flag_pty_requested = true;
- }
-
- cm.requestPTY(cn, term, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels,
- terminal_modes);
- }
-
- /**
- * Inform other side of connection that our PTY has resized.
- * <p>
- * Zero dimension parameters are ignored. The character/row dimensions
- * override the pixel dimensions (when nonzero). Pixel dimensions refer to
- * the drawable area of the window. The dimension parameters are only
- * informational.
- *
- * @param term_width_characters
- * terminal width, characters (e.g., 80)
- * @param term_height_characters
- * terminal height, rows (e.g., 24)
- * @param term_width_pixels
- * terminal width, pixels (e.g., 640)
- * @param term_height_pixels
- * terminal height, pixels (e.g., 480)
- * @throws IOException
- */
- public void resizePTY(int term_width_characters, int term_height_characters, int term_width_pixels,
- int term_height_pixels) throws IOException {
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
- }
-
- cm.resizePTY(cn, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels);
- }
-
- /**
- * Request X11 forwarding for the current session.
- * <p>
- * You have to supply the name and port of your X-server.
- * <p>
- * This method may only be called before a program or shell is started in
- * this session.
- *
- * @param hostname the hostname of the real (target) X11 server (e.g., 127.0.0.1)
- * @param port the port of the real (target) X11 server (e.g., 6010)
- * @param cookie if non-null, then present this cookie to the real X11 server
- * @param singleConnection if true, then the server is instructed to only forward one single
- * connection, no more connections shall be forwarded after first, or after the session
- * channel has been closed
- * @throws IOException
- */
- public void requestX11Forwarding(String hostname, int port, byte[] cookie, boolean singleConnection)
- throws IOException
- {
- if (hostname == null)
- throw new IllegalArgumentException("hostname argument may not be null");
-
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
-
- if (flag_x11_requested)
- throw new IOException("X11 forwarding was already requested.");
-
- if (flag_execution_started)
- throw new IOException(
- "Cannot request X11 forwarding at this stage anymore, a remote execution has already started.");
-
- flag_x11_requested = true;
- }
-
- /* X11ServerData - used to store data about the target X11 server */
-
- X11ServerData x11data = new X11ServerData();
-
- x11data.hostname = hostname;
- x11data.port = port;
- x11data.x11_magic_cookie = cookie; /* if non-null, then present this cookie to the real X11 server */
-
- /* Generate fake cookie - this one is used between remote clients and our proxy */
-
- byte[] fakeCookie = new byte[16];
- String hexEncodedFakeCookie;
-
- /* Make sure that this fake cookie is unique for this connection */
-
- while (true)
- {
- rnd.nextBytes(fakeCookie);
-
- /* Generate also hex representation of fake cookie */
-
- StringBuffer tmp = new StringBuffer(32);
- for (int i = 0; i < fakeCookie.length; i++)
- {
- String digit2 = Integer.toHexString(fakeCookie[i] & 0xff);
- tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2);
- }
- hexEncodedFakeCookie = tmp.toString();
-
- /* Well, yes, chances are low, but we want to be on the safe side */
-
- if (cm.checkX11Cookie(hexEncodedFakeCookie) == null)
- break;
- }
-
- /* Ask for X11 forwarding */
-
- cm.requestX11(cn, singleConnection, "MIT-MAGIC-COOKIE-1", hexEncodedFakeCookie, 0);
-
- /* OK, that went fine, get ready to accept X11 connections... */
- /* ... but only if the user has not called close() in the meantime =) */
-
- synchronized (this)
- {
- if (flag_closed == false)
- {
- this.x11FakeCookie = hexEncodedFakeCookie;
- cm.registerX11Cookie(hexEncodedFakeCookie, x11data);
- }
- }
-
- /* Now it is safe to start remote X11 programs */
- }
-
- /**
- * Execute a command on the remote machine.
- *
- * @param cmd
- * The command to execute on the remote host.
- * @throws IOException
- */
- public void execCommand(String cmd) throws IOException
- {
- if (cmd == null)
- throw new IllegalArgumentException("cmd argument may not be null");
-
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
-
- if (flag_execution_started)
- throw new IOException("A remote execution has already started.");
-
- flag_execution_started = true;
- }
-
- cm.requestExecCommand(cn, cmd);
- }
-
- /**
- * Start a shell on the remote machine.
- *
- * @throws IOException
- */
- public void startShell() throws IOException
- {
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
-
- if (flag_execution_started)
- throw new IOException("A remote execution has already started.");
-
- flag_execution_started = true;
- }
-
- cm.requestShell(cn);
- }
-
- /**
- * Start a subsystem on the remote machine.
- * Unless you know what you are doing, you will never need this.
- *
- * @param name the name of the subsystem.
- * @throws IOException
- */
- public void startSubSystem(String name) throws IOException
- {
- if (name == null)
- throw new IllegalArgumentException("name argument may not be null");
-
- synchronized (this)
- {
- /* The following is just a nicer error, we would catch it anyway later in the channel code */
- if (flag_closed)
- throw new IOException("This session is closed.");
-
- if (flag_execution_started)
- throw new IOException("A remote execution has already started.");
-
- flag_execution_started = true;
- }
-
- cm.requestSubSystem(cn, name);
- }
-
- /**
- * This method can be used to perform end-to-end session (i.e., SSH channel)
- * testing. It sends a 'ping' message to the server and waits for the 'pong'
- * from the server.
- * <p>
- * Implementation details: this method sends a SSH_MSG_CHANNEL_REQUEST request
- * ('trilead-ping') to the server and waits for the SSH_MSG_CHANNEL_FAILURE reply
- * packet.
- *
- * @throws IOException in case of any problem or when the session is closed
- */
- public void ping() throws IOException
- {
- synchronized (this)
- {
- /*
- * The following is just a nicer error, we would catch it anyway
- * later in the channel code
- */
- if (flag_closed)
- throw new IOException("This session is closed.");
- }
-
- cm.requestChannelTrileadPing(cn);
- }
-
- /**
- * Request authentication agent forwarding.
- * @param agent object that implements the callbacks
- *
- * @throws IOException in case of any problem or when the session is closed
- */
- public synchronized boolean requestAuthAgentForwarding(AuthAgentCallback agent) throws IOException
- {
- synchronized (this)
- {
- /*
- * The following is just a nicer error, we would catch it anyway
- * later in the channel code
- */
- if (flag_closed)
- throw new IOException("This session is closed.");
- }
-
- return cm.requestChannelAgentForwarding(cn, agent);
- }
-
- public InputStream getStdout()
- {
- return cn.getStdoutStream();
- }
-
- public InputStream getStderr()
- {
- return cn.getStderrStream();
- }
-
- public OutputStream getStdin()
- {
- return cn.getStdinStream();
- }
-
- /**
- * This method blocks until there is more data available on either the
- * stdout or stderr InputStream of this <code>Session</code>. Very useful
- * if you do not want to use two parallel threads for reading from the two
- * InputStreams. One can also specify a timeout. NOTE: do NOT call this
- * method if you use concurrent threads that operate on either of the two
- * InputStreams of this <code>Session</code> (otherwise this method may
- * block, even though more data is available).
- *
- * @param timeout
- * The (non-negative) timeout in <code>ms</code>. <code>0</code> means no
- * timeout, the call may block forever.
- * @return
- * <ul>
- * <li><code>0</code> if no more data will arrive.</li>
- * <li><code>1</code> if more data is available.</li>
- * <li><code>-1</code> if a timeout occurred.</li>
- * </ul>
- *
- * @throws IOException
- * @deprecated This method has been replaced with a much more powerful wait-for-condition
- * interface and therefore acts only as a wrapper.
- *
- */
- public int waitUntilDataAvailable(long timeout) throws IOException
- {
- if (timeout < 0)
- throw new IllegalArgumentException("timeout must not be negative!");
-
- int conditions = cm.waitForCondition(cn, timeout, ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA
- | ChannelCondition.EOF);
-
- if ((conditions & ChannelCondition.TIMEOUT) != 0)
- return -1;
-
- if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) != 0)
- return 1;
-
- /* Here we do not need to check separately for CLOSED, since CLOSED implies EOF */
-
- if ((conditions & ChannelCondition.EOF) != 0)
- return 0;
-
- throw new IllegalStateException("Unexpected condition result (" + conditions + ")");
- }
-
- /**
- * This method blocks until certain conditions hold true on the underlying SSH-2 channel.
- * <p>
- * This method returns as soon as one of the following happens:
- * <ul>
- * <li>at least of the specified conditions (see {@link ChannelCondition}) holds true</li>
- * <li>timeout > 0 and a timeout occured (TIMEOUT will be set in result conditions)</a>
- * <li>the underlying channel was closed (CLOSED will be set in result conditions)</a>
- * </ul>
- * <p>
- * In any case, the result value contains ALL current conditions, which may be more
- * than the specified condition set (i.e., never use the "==" operator to test for conditions
- * in the bitmask, see also comments in {@link ChannelCondition}).
- * <p>
- * Note: do NOT call this method if you want to wait for STDOUT_DATA or STDERR_DATA and
- * there are concurrent threads (e.g., StreamGobblers) that operate on either of the two
- * InputStreams of this <code>Session</code> (otherwise this method may
- * block, even though more data is available in the StreamGobblers).
- *
- * @param condition_set a bitmask based on {@link ChannelCondition} values
- * @param timeout non-negative timeout in ms, <code>0</code> means no timeout
- * @return all bitmask specifying all current conditions that are true
- */
-
- public int waitForCondition(int condition_set, long timeout)
- {
- if (timeout < 0)
- throw new IllegalArgumentException("timeout must be non-negative!");
-
- return cm.waitForCondition(cn, timeout, condition_set);
- }
-
- /**
- * Get the exit code/status from the remote command - if available. Be
- * careful - not all server implementations return this value. It is
- * generally a good idea to call this method only when all data from the
- * remote side has been consumed (see also the <code<WaitForCondition</code> method).
- *
- * @return An <code>Integer</code> holding the exit code, or
- * <code>null</code> if no exit code is (yet) available.
- */
- public Integer getExitStatus()
- {
- return cn.getExitStatus();
- }
-
- /**
- * Get the name of the signal by which the process on the remote side was
- * stopped - if available and applicable. Be careful - not all server
- * implementations return this value.
- *
- * @return An <code>String</code> holding the name of the signal, or
- * <code>null</code> if the process exited normally or is still
- * running (or if the server forgot to send this information).
- */
- public String getExitSignal()
- {
- return cn.getExitSignal();
- }
-
- /**
- * Close this session. NEVER forget to call this method to free up resources -
- * even if you got an exception from one of the other methods (or when
- * getting an Exception on the Input- or OutputStreams). Sometimes these other
- * methods may throw an exception, saying that the underlying channel is
- * closed (this can happen, e.g., if the other server sent a close message.)
- * However, as long as you have not called the <code>close()</code>
- * method, you may be wasting (local) resources.
- *
- */
- public void close()
- {
- synchronized (this)
- {
- if (flag_closed)
- return;
-
- flag_closed = true;
-
- if (x11FakeCookie != null)
- cm.unRegisterX11Cookie(x11FakeCookie, true);
-
- try
- {
- cm.closeChannel(cn, "Closed due to user request", true);
- }
- catch (IOException ignored)
- {
- }
- }
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.security.SecureRandom; + +import com.trilead.ssh2.channel.Channel; +import com.trilead.ssh2.channel.ChannelManager; +import com.trilead.ssh2.channel.X11ServerData; + + +/** + * A <code>Session</code> is a remote execution of a program. "Program" means + * in this context either a shell, an application or a system command. The + * program may or may not have a tty. Only one single program can be started on + * a session. However, multiple sessions can be active simultaneously. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Session.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $ + */ +public class Session +{ + ChannelManager cm; + Channel cn; + + boolean flag_pty_requested = false; + boolean flag_x11_requested = false; + boolean flag_execution_started = false; + boolean flag_closed = false; + + String x11FakeCookie = null; + + final SecureRandom rnd; + + Session(ChannelManager cm, SecureRandom rnd) throws IOException + { + this.cm = cm; + this.cn = cm.openSessionChannel(); + this.rnd = rnd; + } + + /** + * Basically just a wrapper for lazy people - identical to calling + * <code>requestPTY("dumb", 0, 0, 0, 0, null)</code>. + * + * @throws IOException + */ + public void requestDumbPTY() throws IOException + { + requestPTY("dumb", 0, 0, 0, 0, null); + } + + /** + * Basically just another wrapper for lazy people - identical to calling + * <code>requestPTY(term, 0, 0, 0, 0, null)</code>. + * + * @throws IOException + */ + public void requestPTY(String term) throws IOException + { + requestPTY(term, 0, 0, 0, 0, null); + } + + /** + * Allocate a pseudo-terminal for this session. + * <p> + * This method may only be called before a program or shell is started in + * this session. + * <p> + * Different aspects can be specified: + * <p> + * <ul> + * <li>The TERM environment variable value (e.g., vt100)</li> + * <li>The terminal's dimensions.</li> + * <li>The encoded terminal modes.</li> + * </ul> + * Zero dimension parameters are ignored. The character/row dimensions + * override the pixel dimensions (when nonzero). Pixel dimensions refer to + * the drawable area of the window. The dimension parameters are only + * informational. The encoding of terminal modes (parameter + * <code>terminal_modes</code>) is described in RFC4254. + * + * @param term + * The TERM environment variable value (e.g., vt100) + * @param term_width_characters + * terminal width, characters (e.g., 80) + * @param term_height_characters + * terminal height, rows (e.g., 24) + * @param term_width_pixels + * terminal width, pixels (e.g., 640) + * @param term_height_pixels + * terminal height, pixels (e.g., 480) + * @param terminal_modes + * encoded terminal modes (may be <code>null</code>) + * @throws IOException + */ + public void requestPTY(String term, int term_width_characters, int term_height_characters, int term_width_pixels, + int term_height_pixels, byte[] terminal_modes) throws IOException + { + if (term == null) + throw new IllegalArgumentException("TERM cannot be null."); + + if ((terminal_modes != null) && (terminal_modes.length > 0)) + { + if (terminal_modes[terminal_modes.length - 1] != 0) + throw new IOException("Illegal terminal modes description, does not end in zero byte"); + } + else + terminal_modes = new byte[] { 0 }; + + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + + if (flag_pty_requested) + throw new IOException("A PTY was already requested."); + + if (flag_execution_started) + throw new IOException( + "Cannot request PTY at this stage anymore, a remote execution has already started."); + + flag_pty_requested = true; + } + + cm.requestPTY(cn, term, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels, + terminal_modes); + } + + /** + * Inform other side of connection that our PTY has resized. + * <p> + * Zero dimension parameters are ignored. The character/row dimensions + * override the pixel dimensions (when nonzero). Pixel dimensions refer to + * the drawable area of the window. The dimension parameters are only + * informational. + * + * @param term_width_characters + * terminal width, characters (e.g., 80) + * @param term_height_characters + * terminal height, rows (e.g., 24) + * @param term_width_pixels + * terminal width, pixels (e.g., 640) + * @param term_height_pixels + * terminal height, pixels (e.g., 480) + * @throws IOException + */ + public void resizePTY(int term_width_characters, int term_height_characters, int term_width_pixels, + int term_height_pixels) throws IOException { + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + } + + cm.resizePTY(cn, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels); + } + + /** + * Request X11 forwarding for the current session. + * <p> + * You have to supply the name and port of your X-server. + * <p> + * This method may only be called before a program or shell is started in + * this session. + * + * @param hostname the hostname of the real (target) X11 server (e.g., 127.0.0.1) + * @param port the port of the real (target) X11 server (e.g., 6010) + * @param cookie if non-null, then present this cookie to the real X11 server + * @param singleConnection if true, then the server is instructed to only forward one single + * connection, no more connections shall be forwarded after first, or after the session + * channel has been closed + * @throws IOException + */ + public void requestX11Forwarding(String hostname, int port, byte[] cookie, boolean singleConnection) + throws IOException + { + if (hostname == null) + throw new IllegalArgumentException("hostname argument may not be null"); + + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + + if (flag_x11_requested) + throw new IOException("X11 forwarding was already requested."); + + if (flag_execution_started) + throw new IOException( + "Cannot request X11 forwarding at this stage anymore, a remote execution has already started."); + + flag_x11_requested = true; + } + + /* X11ServerData - used to store data about the target X11 server */ + + X11ServerData x11data = new X11ServerData(); + + x11data.hostname = hostname; + x11data.port = port; + x11data.x11_magic_cookie = cookie; /* if non-null, then present this cookie to the real X11 server */ + + /* Generate fake cookie - this one is used between remote clients and our proxy */ + + byte[] fakeCookie = new byte[16]; + String hexEncodedFakeCookie; + + /* Make sure that this fake cookie is unique for this connection */ + + while (true) + { + rnd.nextBytes(fakeCookie); + + /* Generate also hex representation of fake cookie */ + + StringBuffer tmp = new StringBuffer(32); + for (int i = 0; i < fakeCookie.length; i++) + { + String digit2 = Integer.toHexString(fakeCookie[i] & 0xff); + tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2); + } + hexEncodedFakeCookie = tmp.toString(); + + /* Well, yes, chances are low, but we want to be on the safe side */ + + if (cm.checkX11Cookie(hexEncodedFakeCookie) == null) + break; + } + + /* Ask for X11 forwarding */ + + cm.requestX11(cn, singleConnection, "MIT-MAGIC-COOKIE-1", hexEncodedFakeCookie, 0); + + /* OK, that went fine, get ready to accept X11 connections... */ + /* ... but only if the user has not called close() in the meantime =) */ + + synchronized (this) + { + if (flag_closed == false) + { + this.x11FakeCookie = hexEncodedFakeCookie; + cm.registerX11Cookie(hexEncodedFakeCookie, x11data); + } + } + + /* Now it is safe to start remote X11 programs */ + } + + /** + * Execute a command on the remote machine. + * + * @param cmd + * The command to execute on the remote host. + * @throws IOException + */ + public void execCommand(String cmd) throws IOException + { + if (cmd == null) + throw new IllegalArgumentException("cmd argument may not be null"); + + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + + if (flag_execution_started) + throw new IOException("A remote execution has already started."); + + flag_execution_started = true; + } + + cm.requestExecCommand(cn, cmd); + } + + /** + * Start a shell on the remote machine. + * + * @throws IOException + */ + public void startShell() throws IOException + { + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + + if (flag_execution_started) + throw new IOException("A remote execution has already started."); + + flag_execution_started = true; + } + + cm.requestShell(cn); + } + + /** + * Start a subsystem on the remote machine. + * Unless you know what you are doing, you will never need this. + * + * @param name the name of the subsystem. + * @throws IOException + */ + public void startSubSystem(String name) throws IOException + { + if (name == null) + throw new IllegalArgumentException("name argument may not be null"); + + synchronized (this) + { + /* The following is just a nicer error, we would catch it anyway later in the channel code */ + if (flag_closed) + throw new IOException("This session is closed."); + + if (flag_execution_started) + throw new IOException("A remote execution has already started."); + + flag_execution_started = true; + } + + cm.requestSubSystem(cn, name); + } + + /** + * This method can be used to perform end-to-end session (i.e., SSH channel) + * testing. It sends a 'ping' message to the server and waits for the 'pong' + * from the server. + * <p> + * Implementation details: this method sends a SSH_MSG_CHANNEL_REQUEST request + * ('trilead-ping') to the server and waits for the SSH_MSG_CHANNEL_FAILURE reply + * packet. + * + * @throws IOException in case of any problem or when the session is closed + */ + public void ping() throws IOException + { + synchronized (this) + { + /* + * The following is just a nicer error, we would catch it anyway + * later in the channel code + */ + if (flag_closed) + throw new IOException("This session is closed."); + } + + cm.requestChannelTrileadPing(cn); + } + + /** + * Request authentication agent forwarding. + * @param agent object that implements the callbacks + * + * @throws IOException in case of any problem or when the session is closed + */ + public synchronized boolean requestAuthAgentForwarding(AuthAgentCallback agent) throws IOException + { + synchronized (this) + { + /* + * The following is just a nicer error, we would catch it anyway + * later in the channel code + */ + if (flag_closed) + throw new IOException("This session is closed."); + } + + return cm.requestChannelAgentForwarding(cn, agent); + } + + public InputStream getStdout() + { + return cn.getStdoutStream(); + } + + public InputStream getStderr() + { + return cn.getStderrStream(); + } + + public OutputStream getStdin() + { + return cn.getStdinStream(); + } + + /** + * This method blocks until there is more data available on either the + * stdout or stderr InputStream of this <code>Session</code>. Very useful + * if you do not want to use two parallel threads for reading from the two + * InputStreams. One can also specify a timeout. NOTE: do NOT call this + * method if you use concurrent threads that operate on either of the two + * InputStreams of this <code>Session</code> (otherwise this method may + * block, even though more data is available). + * + * @param timeout + * The (non-negative) timeout in <code>ms</code>. <code>0</code> means no + * timeout, the call may block forever. + * @return + * <ul> + * <li><code>0</code> if no more data will arrive.</li> + * <li><code>1</code> if more data is available.</li> + * <li><code>-1</code> if a timeout occurred.</li> + * </ul> + * + * @throws IOException + * @deprecated This method has been replaced with a much more powerful wait-for-condition + * interface and therefore acts only as a wrapper. + * + */ + public int waitUntilDataAvailable(long timeout) throws IOException + { + if (timeout < 0) + throw new IllegalArgumentException("timeout must not be negative!"); + + int conditions = cm.waitForCondition(cn, timeout, ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA + | ChannelCondition.EOF); + + if ((conditions & ChannelCondition.TIMEOUT) != 0) + return -1; + + if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) != 0) + return 1; + + /* Here we do not need to check separately for CLOSED, since CLOSED implies EOF */ + + if ((conditions & ChannelCondition.EOF) != 0) + return 0; + + throw new IllegalStateException("Unexpected condition result (" + conditions + ")"); + } + + /** + * This method blocks until certain conditions hold true on the underlying SSH-2 channel. + * <p> + * This method returns as soon as one of the following happens: + * <ul> + * <li>at least of the specified conditions (see {@link ChannelCondition}) holds true</li> + * <li>timeout > 0 and a timeout occured (TIMEOUT will be set in result conditions)</a> + * <li>the underlying channel was closed (CLOSED will be set in result conditions)</a> + * </ul> + * <p> + * In any case, the result value contains ALL current conditions, which may be more + * than the specified condition set (i.e., never use the "==" operator to test for conditions + * in the bitmask, see also comments in {@link ChannelCondition}). + * <p> + * Note: do NOT call this method if you want to wait for STDOUT_DATA or STDERR_DATA and + * there are concurrent threads (e.g., StreamGobblers) that operate on either of the two + * InputStreams of this <code>Session</code> (otherwise this method may + * block, even though more data is available in the StreamGobblers). + * + * @param condition_set a bitmask based on {@link ChannelCondition} values + * @param timeout non-negative timeout in ms, <code>0</code> means no timeout + * @return all bitmask specifying all current conditions that are true + */ + + public int waitForCondition(int condition_set, long timeout) + { + if (timeout < 0) + throw new IllegalArgumentException("timeout must be non-negative!"); + + return cm.waitForCondition(cn, timeout, condition_set); + } + + /** + * Get the exit code/status from the remote command - if available. Be + * careful - not all server implementations return this value. It is + * generally a good idea to call this method only when all data from the + * remote side has been consumed (see also the <code<WaitForCondition</code> method). + * + * @return An <code>Integer</code> holding the exit code, or + * <code>null</code> if no exit code is (yet) available. + */ + public Integer getExitStatus() + { + return cn.getExitStatus(); + } + + /** + * Get the name of the signal by which the process on the remote side was + * stopped - if available and applicable. Be careful - not all server + * implementations return this value. + * + * @return An <code>String</code> holding the name of the signal, or + * <code>null</code> if the process exited normally or is still + * running (or if the server forgot to send this information). + */ + public String getExitSignal() + { + return cn.getExitSignal(); + } + + /** + * Close this session. NEVER forget to call this method to free up resources - + * even if you got an exception from one of the other methods (or when + * getting an Exception on the Input- or OutputStreams). Sometimes these other + * methods may throw an exception, saying that the underlying channel is + * closed (this can happen, e.g., if the other server sent a close message.) + * However, as long as you have not called the <code>close()</code> + * method, you may be wasting (local) resources. + * + */ + public void close() + { + synchronized (this) + { + if (flag_closed) + return; + + flag_closed = true; + + if (x11FakeCookie != null) + cm.unRegisterX11Cookie(x11FakeCookie, true); + + try + { + cm.closeChannel(cn, "Closed due to user request", true); + } + catch (IOException ignored) + { + } + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/StreamGobbler.java b/lib/src/main/java/com/trilead/ssh2/StreamGobbler.java index 1e87bb1..e93c388 100644 --- a/lib/src/main/java/com/trilead/ssh2/StreamGobbler.java +++ b/lib/src/main/java/com/trilead/ssh2/StreamGobbler.java @@ -1,229 +1,229 @@ -
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * A <code>StreamGobbler</code> is an InputStream that uses an internal worker
- * thread to constantly consume input from another InputStream. It uses a buffer
- * to store the consumed data. The buffer size is automatically adjusted, if needed.
- * <p>
- * This class is sometimes very convenient - if you wrap a session's STDOUT and STDERR
- * InputStreams with instances of this class, then you don't have to bother about
- * the shared window of STDOUT and STDERR in the low level SSH-2 protocol,
- * since all arriving data will be immediatelly consumed by the worker threads.
- * Also, as a side effect, the streams will be buffered (e.g., single byte
- * read() operations are faster).
- * <p>
- * Other SSH for Java libraries include this functionality by default in
- * their STDOUT and STDERR InputStream implementations, however, please be aware
- * that this approach has also a downside:
- * <p>
- * If you do not call the StreamGobbler's <code>read()</code> method often enough
- * and the peer is constantly sending huge amounts of data, then you will sooner or later
- * encounter a low memory situation due to the aggregated data (well, it also depends on the Java heap size).
- * Joe Average will like this class anyway - a paranoid programmer would never use such an approach.
- * <p>
- * The term "StreamGobbler" was taken from an article called "When Runtime.exec() won't",
- * see http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: StreamGobbler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class StreamGobbler extends InputStream
-{
- class GobblerThread extends Thread
- {
- public void run()
- {
- byte[] buff = new byte[8192];
-
- while (true)
- {
- try
- {
- int avail = is.read(buff);
-
- synchronized (synchronizer)
- {
- if (avail <= 0)
- {
- isEOF = true;
- synchronizer.notifyAll();
- break;
- }
-
- int space_available = buffer.length - write_pos;
-
- if (space_available < avail)
- {
- /* compact/resize buffer */
-
- int unread_size = write_pos - read_pos;
- int need_space = unread_size + avail;
-
- byte[] new_buffer = buffer;
-
- if (need_space > buffer.length)
- {
- int inc = need_space / 3;
- inc = (inc < 256) ? 256 : inc;
- inc = (inc > 8192) ? 8192 : inc;
- new_buffer = new byte[need_space + inc];
- }
-
- if (unread_size > 0)
- System.arraycopy(buffer, read_pos, new_buffer, 0, unread_size);
-
- buffer = new_buffer;
-
- read_pos = 0;
- write_pos = unread_size;
- }
-
- System.arraycopy(buff, 0, buffer, write_pos, avail);
- write_pos += avail;
-
- synchronizer.notifyAll();
- }
- }
- catch (IOException e)
- {
- synchronized (synchronizer)
- {
- exception = e;
- synchronizer.notifyAll();
- break;
- }
- }
- }
- }
- }
-
- private InputStream is;
- private GobblerThread t;
-
- private Object synchronizer = new Object();
-
- private boolean isEOF = false;
- private boolean isClosed = false;
- private IOException exception = null;
-
- private byte[] buffer = new byte[2048];
- private int read_pos = 0;
- private int write_pos = 0;
-
- public StreamGobbler(InputStream is)
- {
- this.is = is;
- t = new GobblerThread();
- t.setDaemon(true);
- t.start();
- }
-
- public int read() throws IOException
- {
- synchronized (synchronizer)
- {
- if (isClosed)
- throw new IOException("This StreamGobbler is closed.");
-
- while (read_pos == write_pos)
- {
- if (exception != null)
- throw exception;
-
- if (isEOF)
- return -1;
-
- try
- {
- synchronizer.wait();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- int b = buffer[read_pos++] & 0xff;
-
- return b;
- }
- }
-
- public int available() throws IOException
- {
- synchronized (synchronizer)
- {
- if (isClosed)
- throw new IOException("This StreamGobbler is closed.");
-
- return write_pos - read_pos;
- }
- }
-
- public int read(byte[] b) throws IOException
- {
- return read(b, 0, b.length);
- }
-
- public void close() throws IOException
- {
- synchronized (synchronizer)
- {
- if (isClosed)
- return;
- isClosed = true;
- isEOF = true;
- synchronizer.notifyAll();
- is.close();
- }
- }
-
- public int read(byte[] b, int off, int len) throws IOException
- {
- if (b == null)
- throw new NullPointerException();
-
- if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
- throw new IndexOutOfBoundsException();
-
- if (len == 0)
- return 0;
-
- synchronized (synchronizer)
- {
- if (isClosed)
- throw new IOException("This StreamGobbler is closed.");
-
- while (read_pos == write_pos)
- {
- if (exception != null)
- throw exception;
-
- if (isEOF)
- return -1;
-
- try
- {
- synchronizer.wait();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- int avail = write_pos - read_pos;
-
- avail = (avail > len) ? len : avail;
-
- System.arraycopy(buffer, read_pos, b, off, avail);
-
- read_pos += avail;
-
- return avail;
- }
- }
-}
+ +package com.trilead.ssh2; + +import java.io.IOException; +import java.io.InputStream; + +/** + * A <code>StreamGobbler</code> is an InputStream that uses an internal worker + * thread to constantly consume input from another InputStream. It uses a buffer + * to store the consumed data. The buffer size is automatically adjusted, if needed. + * <p> + * This class is sometimes very convenient - if you wrap a session's STDOUT and STDERR + * InputStreams with instances of this class, then you don't have to bother about + * the shared window of STDOUT and STDERR in the low level SSH-2 protocol, + * since all arriving data will be immediatelly consumed by the worker threads. + * Also, as a side effect, the streams will be buffered (e.g., single byte + * read() operations are faster). + * <p> + * Other SSH for Java libraries include this functionality by default in + * their STDOUT and STDERR InputStream implementations, however, please be aware + * that this approach has also a downside: + * <p> + * If you do not call the StreamGobbler's <code>read()</code> method often enough + * and the peer is constantly sending huge amounts of data, then you will sooner or later + * encounter a low memory situation due to the aggregated data (well, it also depends on the Java heap size). + * Joe Average will like this class anyway - a paranoid programmer would never use such an approach. + * <p> + * The term "StreamGobbler" was taken from an article called "When Runtime.exec() won't", + * see http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: StreamGobbler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class StreamGobbler extends InputStream +{ + class GobblerThread extends Thread + { + public void run() + { + byte[] buff = new byte[8192]; + + while (true) + { + try + { + int avail = is.read(buff); + + synchronized (synchronizer) + { + if (avail <= 0) + { + isEOF = true; + synchronizer.notifyAll(); + break; + } + + int space_available = buffer.length - write_pos; + + if (space_available < avail) + { + /* compact/resize buffer */ + + int unread_size = write_pos - read_pos; + int need_space = unread_size + avail; + + byte[] new_buffer = buffer; + + if (need_space > buffer.length) + { + int inc = need_space / 3; + inc = (inc < 256) ? 256 : inc; + inc = (inc > 8192) ? 8192 : inc; + new_buffer = new byte[need_space + inc]; + } + + if (unread_size > 0) + System.arraycopy(buffer, read_pos, new_buffer, 0, unread_size); + + buffer = new_buffer; + + read_pos = 0; + write_pos = unread_size; + } + + System.arraycopy(buff, 0, buffer, write_pos, avail); + write_pos += avail; + + synchronizer.notifyAll(); + } + } + catch (IOException e) + { + synchronized (synchronizer) + { + exception = e; + synchronizer.notifyAll(); + break; + } + } + } + } + } + + private InputStream is; + private GobblerThread t; + + private Object synchronizer = new Object(); + + private boolean isEOF = false; + private boolean isClosed = false; + private IOException exception = null; + + private byte[] buffer = new byte[2048]; + private int read_pos = 0; + private int write_pos = 0; + + public StreamGobbler(InputStream is) + { + this.is = is; + t = new GobblerThread(); + t.setDaemon(true); + t.start(); + } + + public int read() throws IOException + { + synchronized (synchronizer) + { + if (isClosed) + throw new IOException("This StreamGobbler is closed."); + + while (read_pos == write_pos) + { + if (exception != null) + throw exception; + + if (isEOF) + return -1; + + try + { + synchronizer.wait(); + } + catch (InterruptedException e) + { + } + } + + int b = buffer[read_pos++] & 0xff; + + return b; + } + } + + public int available() throws IOException + { + synchronized (synchronizer) + { + if (isClosed) + throw new IOException("This StreamGobbler is closed."); + + return write_pos - read_pos; + } + } + + public int read(byte[] b) throws IOException + { + return read(b, 0, b.length); + } + + public void close() throws IOException + { + synchronized (synchronizer) + { + if (isClosed) + return; + isClosed = true; + isEOF = true; + synchronizer.notifyAll(); + is.close(); + } + } + + public int read(byte[] b, int off, int len) throws IOException + { + if (b == null) + throw new NullPointerException(); + + if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length)) + throw new IndexOutOfBoundsException(); + + if (len == 0) + return 0; + + synchronized (synchronizer) + { + if (isClosed) + throw new IOException("This StreamGobbler is closed."); + + while (read_pos == write_pos) + { + if (exception != null) + throw exception; + + if (isEOF) + return -1; + + try + { + synchronizer.wait(); + } + catch (InterruptedException e) + { + } + } + + int avail = write_pos - read_pos; + + avail = (avail > len) ? len : avail; + + System.arraycopy(buffer, read_pos, b, off, avail); + + read_pos += avail; + + return avail; + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java b/lib/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java index db54273..7a1305b 100644 --- a/lib/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java +++ b/lib/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java @@ -1,464 +1,464 @@ -
-package com.trilead.ssh2.auth;
-
-import java.io.IOException;
-import java.security.KeyPair;
-import java.security.PrivateKey;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPrivateKey;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPrivateKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPrivateKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.Vector;
-
-import com.trilead.ssh2.InteractiveCallback;
-import com.trilead.ssh2.crypto.PEMDecoder;
-import com.trilead.ssh2.packets.PacketServiceAccept;
-import com.trilead.ssh2.packets.PacketServiceRequest;
-import com.trilead.ssh2.packets.PacketUserauthBanner;
-import com.trilead.ssh2.packets.PacketUserauthFailure;
-import com.trilead.ssh2.packets.PacketUserauthInfoRequest;
-import com.trilead.ssh2.packets.PacketUserauthInfoResponse;
-import com.trilead.ssh2.packets.PacketUserauthRequestInteractive;
-import com.trilead.ssh2.packets.PacketUserauthRequestNone;
-import com.trilead.ssh2.packets.PacketUserauthRequestPassword;
-import com.trilead.ssh2.packets.PacketUserauthRequestPublicKey;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesWriter;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-import com.trilead.ssh2.transport.MessageHandler;
-import com.trilead.ssh2.transport.TransportManager;
-
-
-/**
- * AuthenticationManager.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AuthenticationManager.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class AuthenticationManager implements MessageHandler
-{
- TransportManager tm;
-
- Vector packets = new Vector();
- boolean connectionClosed = false;
-
- String banner;
-
- String[] remainingMethods = new String[0];
- boolean isPartialSuccess = false;
-
- boolean authenticated = false;
- boolean initDone = false;
-
- public AuthenticationManager(TransportManager tm)
- {
- this.tm = tm;
- }
-
- boolean methodPossible(String methName)
- {
- if (remainingMethods == null)
- return false;
-
- for (int i = 0; i < remainingMethods.length; i++)
- {
- if (remainingMethods[i].compareTo(methName) == 0)
- return true;
- }
- return false;
- }
-
- byte[] deQueue() throws IOException
- {
- synchronized (packets)
- {
- while (packets.size() == 0)
- {
- if (connectionClosed)
- throw (IOException) new IOException("The connection is closed.").initCause(tm
- .getReasonClosedCause());
-
- try
- {
- packets.wait();
- }
- catch (InterruptedException ign)
- {
- }
- }
- /* This sequence works with J2ME */
- byte[] res = (byte[]) packets.firstElement();
- packets.removeElementAt(0);
- return res;
- }
- }
-
- byte[] getNextMessage() throws IOException
- {
- while (true)
- {
- byte[] msg = deQueue();
-
- if (msg[0] != Packets.SSH_MSG_USERAUTH_BANNER)
- return msg;
-
- PacketUserauthBanner sb = new PacketUserauthBanner(msg, 0, msg.length);
-
- banner = sb.getBanner();
- }
- }
-
- public String[] getRemainingMethods(String user) throws IOException
- {
- initialize(user);
- return remainingMethods;
- }
-
- public boolean getPartialSuccess()
- {
- return isPartialSuccess;
- }
-
- private boolean initialize(String user) throws IOException
- {
- if (initDone == false)
- {
- tm.registerMessageHandler(this, 0, 255);
-
- PacketServiceRequest sr = new PacketServiceRequest("ssh-userauth");
- tm.sendMessage(sr.getPayload());
-
- PacketUserauthRequestNone urn = new PacketUserauthRequestNone("ssh-connection", user);
- tm.sendMessage(urn.getPayload());
-
- byte[] msg = getNextMessage();
- new PacketServiceAccept(msg, 0, msg.length);
- msg = getNextMessage();
-
- initDone = true;
-
- if (msg[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
- {
- authenticated = true;
- tm.removeMessageHandler(this, 0, 255);
- return true;
- }
-
- if (msg[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
- {
- PacketUserauthFailure puf = new PacketUserauthFailure(msg, 0, msg.length);
-
- remainingMethods = puf.getAuthThatCanContinue();
- isPartialSuccess = puf.isPartialSuccess();
- return false;
- }
-
- throw new IOException("Unexpected SSH message (type " + msg[0] + ")");
- }
- return authenticated;
- }
-
- public boolean authenticatePublicKey(String user, char[] PEMPrivateKey, String password, SecureRandom rnd)
- throws IOException
- {
- KeyPair pair = PEMDecoder.decode(PEMPrivateKey, password);
-
- return authenticatePublicKey(user, pair, rnd);
- }
-
- public boolean authenticatePublicKey(String user, KeyPair pair, SecureRandom rnd)
- throws IOException
- {
- PrivateKey key = pair.getPrivate();
-
- try
- {
- initialize(user);
-
- if (methodPossible("publickey") == false)
- throw new IOException("Authentication method publickey not supported by the server at this stage.");
-
- if (key instanceof DSAPrivateKey)
- {
- DSAPrivateKey pk = (DSAPrivateKey) key;
-
- byte[] pk_enc = DSASHA1Verify.encodeSSHDSAPublicKey((DSAPublicKey) pair.getPublic());
-
- TypesWriter tw = new TypesWriter();
-
- byte[] H = tm.getSessionIdentifier();
-
- tw.writeString(H, 0, H.length);
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(user);
- tw.writeString("ssh-connection");
- tw.writeString("publickey");
- tw.writeBoolean(true);
- tw.writeString("ssh-dss");
- tw.writeString(pk_enc, 0, pk_enc.length);
-
- byte[] msg = tw.getBytes();
-
- byte[] ds = DSASHA1Verify.generateSignature(msg, pk, rnd);
-
- byte[] ds_enc = DSASHA1Verify.encodeSSHDSASignature(ds);
-
- PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
- "ssh-dss", pk_enc, ds_enc);
- tm.sendMessage(ua.getPayload());
- }
- else if (key instanceof RSAPrivateKey)
- {
- RSAPrivateKey pk = (RSAPrivateKey) key;
-
- byte[] pk_enc = RSASHA1Verify.encodeSSHRSAPublicKey((RSAPublicKey) pair.getPublic());
-
- TypesWriter tw = new TypesWriter();
- {
- byte[] H = tm.getSessionIdentifier();
-
- tw.writeString(H, 0, H.length);
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(user);
- tw.writeString("ssh-connection");
- tw.writeString("publickey");
- tw.writeBoolean(true);
- tw.writeString("ssh-rsa");
- tw.writeString(pk_enc, 0, pk_enc.length);
- }
-
- byte[] msg = tw.getBytes();
-
- byte[] ds = RSASHA1Verify.generateSignature(msg, pk);
-
- byte[] rsa_sig_enc = RSASHA1Verify.encodeSSHRSASignature(ds);
-
- PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
- "ssh-rsa", pk_enc, rsa_sig_enc);
-
- tm.sendMessage(ua.getPayload());
- }
- else if (key instanceof ECPrivateKey)
- {
- ECPrivateKey pk = (ECPrivateKey) key;
-
- byte[] pk_enc = ECDSASHA2Verify.encodeSSHECDSAPublicKey((ECPublicKey) pair.getPublic());
-
- TypesWriter tw = new TypesWriter();
- {
- byte[] H = tm.getSessionIdentifier();
-
- tw.writeString(H, 0, H.length);
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(user);
- tw.writeString("ssh-connection");
- tw.writeString("publickey");
- tw.writeBoolean(true);
- tw.writeString("ecdsa-sha2-nistp256");
- tw.writeString(pk_enc, 0, pk_enc.length);
- }
-
- byte[] msg = tw.getBytes();
-
- byte[] ds = ECDSASHA2Verify.generateSignature(msg, pk);
-
- byte[] ec_sig_enc = ECDSASHA2Verify.encodeSSHECDSASignature(ds, pk.getParams());
-
- PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
- "ecdsa-sha2-nistp256", pk_enc, ec_sig_enc);
-
- tm.sendMessage(ua.getPayload());
- }
- else
- {
- throw new IOException("Unknown private key type returned by the PEM decoder.");
- }
-
- byte[] ar = getNextMessage();
- if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
- {
- authenticated = true;
- tm.removeMessageHandler(this, 0, 255);
- return true;
- }
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
- {
- PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
- remainingMethods = puf.getAuthThatCanContinue();
- isPartialSuccess = puf.isPartialSuccess();
-
- return false;
- }
-
- throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
-
- }
- catch (IOException e)
- {
-e.printStackTrace();
- tm.close(e, false);
- throw (IOException) new IOException("Publickey authentication failed.").initCause(e);
- }
- }
-
- public boolean authenticateNone(String user) throws IOException
- {
- try
- {
- initialize(user);
- return authenticated;
- }
- catch (IOException e)
- {
- tm.close(e, false);
- throw (IOException) new IOException("None authentication failed.").initCause(e);
- }
- }
-
- public boolean authenticatePassword(String user, String pass) throws IOException
- {
- try
- {
- initialize(user);
-
- if (methodPossible("password") == false)
- throw new IOException("Authentication method password not supported by the server at this stage.");
-
- PacketUserauthRequestPassword ua = new PacketUserauthRequestPassword("ssh-connection", user, pass);
- tm.sendMessage(ua.getPayload());
-
- byte[] ar = getNextMessage();
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
- {
- authenticated = true;
- tm.removeMessageHandler(this, 0, 255);
- return true;
- }
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
- {
- PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
- remainingMethods = puf.getAuthThatCanContinue();
- isPartialSuccess = puf.isPartialSuccess();
-
- return false;
- }
-
- throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
-
- }
- catch (IOException e)
- {
- tm.close(e, false);
- throw (IOException) new IOException("Password authentication failed.").initCause(e);
- }
- }
-
- public boolean authenticateInteractive(String user, String[] submethods, InteractiveCallback cb) throws IOException
- {
- try
- {
- initialize(user);
-
- if (methodPossible("keyboard-interactive") == false)
- throw new IOException(
- "Authentication method keyboard-interactive not supported by the server at this stage.");
-
- if (submethods == null)
- submethods = new String[0];
-
- PacketUserauthRequestInteractive ua = new PacketUserauthRequestInteractive("ssh-connection", user,
- submethods);
-
- tm.sendMessage(ua.getPayload());
-
- while (true)
- {
- byte[] ar = getNextMessage();
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
- {
- authenticated = true;
- tm.removeMessageHandler(this, 0, 255);
- return true;
- }
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
- {
- PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
- remainingMethods = puf.getAuthThatCanContinue();
- isPartialSuccess = puf.isPartialSuccess();
-
- return false;
- }
-
- if (ar[0] == Packets.SSH_MSG_USERAUTH_INFO_REQUEST)
- {
- PacketUserauthInfoRequest pui = new PacketUserauthInfoRequest(ar, 0, ar.length);
-
- String[] responses;
-
- try
- {
- responses = cb.replyToChallenge(pui.getName(), pui.getInstruction(), pui.getNumPrompts(), pui
- .getPrompt(), pui.getEcho());
- }
- catch (Exception e)
- {
- throw (IOException) new IOException("Exception in callback.").initCause(e);
- }
-
- if (responses == null)
- throw new IOException("Your callback may not return NULL!");
-
- PacketUserauthInfoResponse puir = new PacketUserauthInfoResponse(responses);
- tm.sendMessage(puir.getPayload());
-
- continue;
- }
-
- throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
- }
- }
- catch (IOException e)
- {
- tm.close(e, false);
- throw (IOException) new IOException("Keyboard-interactive authentication failed.").initCause(e);
- }
- }
-
- public void handleMessage(byte[] msg, int msglen) throws IOException
- {
- synchronized (packets)
- {
- if (msg == null)
- {
- connectionClosed = true;
- }
- else
- {
- byte[] tmp = new byte[msglen];
- System.arraycopy(msg, 0, tmp, 0, msglen);
- packets.addElement(tmp);
- }
-
- packets.notifyAll();
-
- if (packets.size() > 5)
- {
- connectionClosed = true;
- throw new IOException("Error, peer is flooding us with authentication packets.");
- }
- }
- }
-}
+ +package com.trilead.ssh2.auth; + +import java.io.IOException; +import java.security.KeyPair; +import java.security.PrivateKey; +import java.security.SecureRandom; +import java.security.interfaces.DSAPrivateKey; +import java.security.interfaces.DSAPublicKey; +import java.security.interfaces.ECPrivateKey; +import java.security.interfaces.ECPublicKey; +import java.security.interfaces.RSAPrivateKey; +import java.security.interfaces.RSAPublicKey; +import java.util.Vector; + +import com.trilead.ssh2.InteractiveCallback; +import com.trilead.ssh2.crypto.PEMDecoder; +import com.trilead.ssh2.packets.PacketServiceAccept; +import com.trilead.ssh2.packets.PacketServiceRequest; +import com.trilead.ssh2.packets.PacketUserauthBanner; +import com.trilead.ssh2.packets.PacketUserauthFailure; +import com.trilead.ssh2.packets.PacketUserauthInfoRequest; +import com.trilead.ssh2.packets.PacketUserauthInfoResponse; +import com.trilead.ssh2.packets.PacketUserauthRequestInteractive; +import com.trilead.ssh2.packets.PacketUserauthRequestNone; +import com.trilead.ssh2.packets.PacketUserauthRequestPassword; +import com.trilead.ssh2.packets.PacketUserauthRequestPublicKey; +import com.trilead.ssh2.packets.Packets; +import com.trilead.ssh2.packets.TypesWriter; +import com.trilead.ssh2.signature.DSASHA1Verify; +import com.trilead.ssh2.signature.ECDSASHA2Verify; +import com.trilead.ssh2.signature.RSASHA1Verify; +import com.trilead.ssh2.transport.MessageHandler; +import com.trilead.ssh2.transport.TransportManager; + + +/** + * AuthenticationManager. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AuthenticationManager.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class AuthenticationManager implements MessageHandler +{ + TransportManager tm; + + Vector packets = new Vector(); + boolean connectionClosed = false; + + String banner; + + String[] remainingMethods = new String[0]; + boolean isPartialSuccess = false; + + boolean authenticated = false; + boolean initDone = false; + + public AuthenticationManager(TransportManager tm) + { + this.tm = tm; + } + + boolean methodPossible(String methName) + { + if (remainingMethods == null) + return false; + + for (int i = 0; i < remainingMethods.length; i++) + { + if (remainingMethods[i].compareTo(methName) == 0) + return true; + } + return false; + } + + byte[] deQueue() throws IOException + { + synchronized (packets) + { + while (packets.size() == 0) + { + if (connectionClosed) + throw (IOException) new IOException("The connection is closed.").initCause(tm + .getReasonClosedCause()); + + try + { + packets.wait(); + } + catch (InterruptedException ign) + { + } + } + /* This sequence works with J2ME */ + byte[] res = (byte[]) packets.firstElement(); + packets.removeElementAt(0); + return res; + } + } + + byte[] getNextMessage() throws IOException + { + while (true) + { + byte[] msg = deQueue(); + + if (msg[0] != Packets.SSH_MSG_USERAUTH_BANNER) + return msg; + + PacketUserauthBanner sb = new PacketUserauthBanner(msg, 0, msg.length); + + banner = sb.getBanner(); + } + } + + public String[] getRemainingMethods(String user) throws IOException + { + initialize(user); + return remainingMethods; + } + + public boolean getPartialSuccess() + { + return isPartialSuccess; + } + + private boolean initialize(String user) throws IOException + { + if (initDone == false) + { + tm.registerMessageHandler(this, 0, 255); + + PacketServiceRequest sr = new PacketServiceRequest("ssh-userauth"); + tm.sendMessage(sr.getPayload()); + + PacketUserauthRequestNone urn = new PacketUserauthRequestNone("ssh-connection", user); + tm.sendMessage(urn.getPayload()); + + byte[] msg = getNextMessage(); + new PacketServiceAccept(msg, 0, msg.length); + msg = getNextMessage(); + + initDone = true; + + if (msg[0] == Packets.SSH_MSG_USERAUTH_SUCCESS) + { + authenticated = true; + tm.removeMessageHandler(this, 0, 255); + return true; + } + + if (msg[0] == Packets.SSH_MSG_USERAUTH_FAILURE) + { + PacketUserauthFailure puf = new PacketUserauthFailure(msg, 0, msg.length); + + remainingMethods = puf.getAuthThatCanContinue(); + isPartialSuccess = puf.isPartialSuccess(); + return false; + } + + throw new IOException("Unexpected SSH message (type " + msg[0] + ")"); + } + return authenticated; + } + + public boolean authenticatePublicKey(String user, char[] PEMPrivateKey, String password, SecureRandom rnd) + throws IOException + { + KeyPair pair = PEMDecoder.decode(PEMPrivateKey, password); + + return authenticatePublicKey(user, pair, rnd); + } + + public boolean authenticatePublicKey(String user, KeyPair pair, SecureRandom rnd) + throws IOException + { + PrivateKey key = pair.getPrivate(); + + try + { + initialize(user); + + if (methodPossible("publickey") == false) + throw new IOException("Authentication method publickey not supported by the server at this stage."); + + if (key instanceof DSAPrivateKey) + { + DSAPrivateKey pk = (DSAPrivateKey) key; + + byte[] pk_enc = DSASHA1Verify.encodeSSHDSAPublicKey((DSAPublicKey) pair.getPublic()); + + TypesWriter tw = new TypesWriter(); + + byte[] H = tm.getSessionIdentifier(); + + tw.writeString(H, 0, H.length); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(user); + tw.writeString("ssh-connection"); + tw.writeString("publickey"); + tw.writeBoolean(true); + tw.writeString("ssh-dss"); + tw.writeString(pk_enc, 0, pk_enc.length); + + byte[] msg = tw.getBytes(); + + byte[] ds = DSASHA1Verify.generateSignature(msg, pk, rnd); + + byte[] ds_enc = DSASHA1Verify.encodeSSHDSASignature(ds); + + PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user, + "ssh-dss", pk_enc, ds_enc); + tm.sendMessage(ua.getPayload()); + } + else if (key instanceof RSAPrivateKey) + { + RSAPrivateKey pk = (RSAPrivateKey) key; + + byte[] pk_enc = RSASHA1Verify.encodeSSHRSAPublicKey((RSAPublicKey) pair.getPublic()); + + TypesWriter tw = new TypesWriter(); + { + byte[] H = tm.getSessionIdentifier(); + + tw.writeString(H, 0, H.length); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(user); + tw.writeString("ssh-connection"); + tw.writeString("publickey"); + tw.writeBoolean(true); + tw.writeString("ssh-rsa"); + tw.writeString(pk_enc, 0, pk_enc.length); + } + + byte[] msg = tw.getBytes(); + + byte[] ds = RSASHA1Verify.generateSignature(msg, pk); + + byte[] rsa_sig_enc = RSASHA1Verify.encodeSSHRSASignature(ds); + + PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user, + "ssh-rsa", pk_enc, rsa_sig_enc); + + tm.sendMessage(ua.getPayload()); + } + else if (key instanceof ECPrivateKey) + { + ECPrivateKey pk = (ECPrivateKey) key; + + byte[] pk_enc = ECDSASHA2Verify.encodeSSHECDSAPublicKey((ECPublicKey) pair.getPublic()); + + TypesWriter tw = new TypesWriter(); + { + byte[] H = tm.getSessionIdentifier(); + + tw.writeString(H, 0, H.length); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(user); + tw.writeString("ssh-connection"); + tw.writeString("publickey"); + tw.writeBoolean(true); + tw.writeString("ecdsa-sha2-nistp256"); + tw.writeString(pk_enc, 0, pk_enc.length); + } + + byte[] msg = tw.getBytes(); + + byte[] ds = ECDSASHA2Verify.generateSignature(msg, pk); + + byte[] ec_sig_enc = ECDSASHA2Verify.encodeSSHECDSASignature(ds, pk.getParams()); + + PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user, + "ecdsa-sha2-nistp256", pk_enc, ec_sig_enc); + + tm.sendMessage(ua.getPayload()); + } + else + { + throw new IOException("Unknown private key type returned by the PEM decoder."); + } + + byte[] ar = getNextMessage(); + if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS) + { + authenticated = true; + tm.removeMessageHandler(this, 0, 255); + return true; + } + + if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE) + { + PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length); + + remainingMethods = puf.getAuthThatCanContinue(); + isPartialSuccess = puf.isPartialSuccess(); + + return false; + } + + throw new IOException("Unexpected SSH message (type " + ar[0] + ")"); + + } + catch (IOException e) + { +e.printStackTrace(); + tm.close(e, false); + throw (IOException) new IOException("Publickey authentication failed.").initCause(e); + } + } + + public boolean authenticateNone(String user) throws IOException + { + try + { + initialize(user); + return authenticated; + } + catch (IOException e) + { + tm.close(e, false); + throw (IOException) new IOException("None authentication failed.").initCause(e); + } + } + + public boolean authenticatePassword(String user, String pass) throws IOException + { + try + { + initialize(user); + + if (methodPossible("password") == false) + throw new IOException("Authentication method password not supported by the server at this stage."); + + PacketUserauthRequestPassword ua = new PacketUserauthRequestPassword("ssh-connection", user, pass); + tm.sendMessage(ua.getPayload()); + + byte[] ar = getNextMessage(); + + if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS) + { + authenticated = true; + tm.removeMessageHandler(this, 0, 255); + return true; + } + + if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE) + { + PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length); + + remainingMethods = puf.getAuthThatCanContinue(); + isPartialSuccess = puf.isPartialSuccess(); + + return false; + } + + throw new IOException("Unexpected SSH message (type " + ar[0] + ")"); + + } + catch (IOException e) + { + tm.close(e, false); + throw (IOException) new IOException("Password authentication failed.").initCause(e); + } + } + + public boolean authenticateInteractive(String user, String[] submethods, InteractiveCallback cb) throws IOException + { + try + { + initialize(user); + + if (methodPossible("keyboard-interactive") == false) + throw new IOException( + "Authentication method keyboard-interactive not supported by the server at this stage."); + + if (submethods == null) + submethods = new String[0]; + + PacketUserauthRequestInteractive ua = new PacketUserauthRequestInteractive("ssh-connection", user, + submethods); + + tm.sendMessage(ua.getPayload()); + + while (true) + { + byte[] ar = getNextMessage(); + + if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS) + { + authenticated = true; + tm.removeMessageHandler(this, 0, 255); + return true; + } + + if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE) + { + PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length); + + remainingMethods = puf.getAuthThatCanContinue(); + isPartialSuccess = puf.isPartialSuccess(); + + return false; + } + + if (ar[0] == Packets.SSH_MSG_USERAUTH_INFO_REQUEST) + { + PacketUserauthInfoRequest pui = new PacketUserauthInfoRequest(ar, 0, ar.length); + + String[] responses; + + try + { + responses = cb.replyToChallenge(pui.getName(), pui.getInstruction(), pui.getNumPrompts(), pui + .getPrompt(), pui.getEcho()); + } + catch (Exception e) + { + throw (IOException) new IOException("Exception in callback.").initCause(e); + } + + if (responses == null) + throw new IOException("Your callback may not return NULL!"); + + PacketUserauthInfoResponse puir = new PacketUserauthInfoResponse(responses); + tm.sendMessage(puir.getPayload()); + + continue; + } + + throw new IOException("Unexpected SSH message (type " + ar[0] + ")"); + } + } + catch (IOException e) + { + tm.close(e, false); + throw (IOException) new IOException("Keyboard-interactive authentication failed.").initCause(e); + } + } + + public void handleMessage(byte[] msg, int msglen) throws IOException + { + synchronized (packets) + { + if (msg == null) + { + connectionClosed = true; + } + else + { + byte[] tmp = new byte[msglen]; + System.arraycopy(msg, 0, tmp, 0, msglen); + packets.addElement(tmp); + } + + packets.notifyAll(); + + if (packets.size() > 5) + { + connectionClosed = true; + throw new IOException("Error, peer is flooding us with authentication packets."); + } + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/Channel.java b/lib/src/main/java/com/trilead/ssh2/channel/Channel.java index 4b19a48..8365f12 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/Channel.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/Channel.java @@ -1,207 +1,207 @@ -
-package com.trilead.ssh2.channel;
-
-/**
- * Channel.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Channel.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class Channel
-{
- /*
- * OK. Here is an important part of the JVM Specification:
- * (http://java.sun.com/docs/books/vmspec/2nd-edition/html/Threads.doc.html#22214)
- *
- * Any association between locks and variables is purely conventional.
- * Locking any lock conceptually flushes all variables from a thread's
- * working memory, and unlocking any lock forces the writing out to main
- * memory of all variables that the thread has assigned. That a lock may be
- * associated with a particular object or a class is purely a convention.
- * (...)
- *
- * If a thread uses a particular shared variable only after locking a
- * particular lock and before the corresponding unlocking of that same lock,
- * then the thread will read the shared value of that variable from main
- * memory after the lock operation, if necessary, and will copy back to main
- * memory the value most recently assigned to that variable before the
- * unlock operation.
- *
- * This, in conjunction with the mutual exclusion rules for locks, suffices
- * to guarantee that values are correctly transmitted from one thread to
- * another through shared variables.
- *
- * ====> Always keep that in mind when modifying the Channel/ChannelManger
- * code.
- *
- */
-
- static final int STATE_OPENING = 1;
- static final int STATE_OPEN = 2;
- static final int STATE_CLOSED = 4;
-
- static final int CHANNEL_BUFFER_SIZE = 30000;
-
- /*
- * To achieve correctness, the following rules have to be respected when
- * accessing this object:
- */
-
- // These fields can always be read
- final ChannelManager cm;
- final ChannelOutputStream stdinStream;
- final ChannelInputStream stdoutStream;
- final ChannelInputStream stderrStream;
-
- // These two fields will only be written while the Channel is in state
- // STATE_OPENING.
- // The code makes sure that the two fields are written out when the state is
- // changing to STATE_OPEN.
- // Therefore, if you know that the Channel is in state STATE_OPEN, then you
- // can read these two fields without synchronizing on the Channel. However, make
- // sure that you get the latest values (e.g., flush caches by synchronizing on any
- // object). However, to be on the safe side, you can lock the channel.
-
- int localID = -1;
- int remoteID = -1;
-
- /*
- * Make sure that we never send a data/EOF/WindowChange msg after a CLOSE
- * msg.
- *
- * This is a little bit complicated, but we have to do it in that way, since
- * we cannot keep a lock on the Channel during the send operation (this
- * would block sometimes the receiver thread, and, in extreme cases, can
- * lead to a deadlock on both sides of the connection (senders are blocked
- * since the receive buffers on the other side are full, and receiver
- * threads wait for the senders to finish). It all depends on the
- * implementation on the other side. But we cannot make any assumptions, we
- * have to assume the worst case. Confused? Just believe me.
- */
-
- /*
- * If you send a message on a channel, then you have to aquire the
- * "channelSendLock" and check the "closeMessageSent" flag (this variable
- * may only be accessed while holding the "channelSendLock" !!!
- *
- * BTW: NEVER EVER SEND MESSAGES FROM THE RECEIVE THREAD - see explanation
- * above.
- */
-
- final Object channelSendLock = new Object();
- boolean closeMessageSent = false;
-
- /*
- * Stop memory fragmentation by allocating this often used buffer.
- * May only be used while holding the channelSendLock
- */
-
- final byte[] msgWindowAdjust = new byte[9];
-
- // If you access (read or write) any of the following fields, then you have
- // to synchronize on the channel.
-
- int state = STATE_OPENING;
-
- boolean closeMessageRecv = false;
-
- /* This is a stupid implementation. At the moment we can only wait
- * for one pending request per channel.
- */
- int successCounter = 0;
- int failedCounter = 0;
-
- int localWindow = 0; /* locally, we use a small window, < 2^31 */
- long remoteWindow = 0; /* long for readable 2^32 - 1 window support */
-
- int localMaxPacketSize = -1;
- int remoteMaxPacketSize = -1;
-
- final byte[] stdoutBuffer = new byte[CHANNEL_BUFFER_SIZE];
- final byte[] stderrBuffer = new byte[CHANNEL_BUFFER_SIZE];
-
- int stdoutReadpos = 0;
- int stdoutWritepos = 0;
- int stderrReadpos = 0;
- int stderrWritepos = 0;
-
- boolean EOF = false;
-
- Integer exit_status;
-
- String exit_signal;
-
- // we keep the x11 cookie so that this channel can be closed when this
- // specific x11 forwarding gets stopped
-
- String hexX11FakeCookie;
-
- // reasonClosed is special, since we sometimes need to access it
- // while holding the channelSendLock.
- // We protect it with a private short term lock.
-
- private final Object reasonClosedLock = new Object();
- private String reasonClosed = null;
-
- public Channel(ChannelManager cm)
- {
- this.cm = cm;
-
- this.localWindow = CHANNEL_BUFFER_SIZE;
- this.localMaxPacketSize = 35000 - 1024; // leave enough slack
-
- this.stdinStream = new ChannelOutputStream(this);
- this.stdoutStream = new ChannelInputStream(this, false);
- this.stderrStream = new ChannelInputStream(this, true);
- }
-
- /* Methods to allow access from classes outside of this package */
-
- public ChannelInputStream getStderrStream()
- {
- return stderrStream;
- }
-
- public ChannelOutputStream getStdinStream()
- {
- return stdinStream;
- }
-
- public ChannelInputStream getStdoutStream()
- {
- return stdoutStream;
- }
-
- public String getExitSignal()
- {
- synchronized (this)
- {
- return exit_signal;
- }
- }
-
- public Integer getExitStatus()
- {
- synchronized (this)
- {
- return exit_status;
- }
- }
-
- public String getReasonClosed()
- {
- synchronized (reasonClosedLock)
- {
- return reasonClosed;
- }
- }
-
- public void setReasonClosed(String reasonClosed)
- {
- synchronized (reasonClosedLock)
- {
- if (this.reasonClosed == null)
- this.reasonClosed = reasonClosed;
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +/** + * Channel. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Channel.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class Channel +{ + /* + * OK. Here is an important part of the JVM Specification: + * (http://java.sun.com/docs/books/vmspec/2nd-edition/html/Threads.doc.html#22214) + * + * Any association between locks and variables is purely conventional. + * Locking any lock conceptually flushes all variables from a thread's + * working memory, and unlocking any lock forces the writing out to main + * memory of all variables that the thread has assigned. That a lock may be + * associated with a particular object or a class is purely a convention. + * (...) + * + * If a thread uses a particular shared variable only after locking a + * particular lock and before the corresponding unlocking of that same lock, + * then the thread will read the shared value of that variable from main + * memory after the lock operation, if necessary, and will copy back to main + * memory the value most recently assigned to that variable before the + * unlock operation. + * + * This, in conjunction with the mutual exclusion rules for locks, suffices + * to guarantee that values are correctly transmitted from one thread to + * another through shared variables. + * + * ====> Always keep that in mind when modifying the Channel/ChannelManger + * code. + * + */ + + static final int STATE_OPENING = 1; + static final int STATE_OPEN = 2; + static final int STATE_CLOSED = 4; + + static final int CHANNEL_BUFFER_SIZE = 30000; + + /* + * To achieve correctness, the following rules have to be respected when + * accessing this object: + */ + + // These fields can always be read + final ChannelManager cm; + final ChannelOutputStream stdinStream; + final ChannelInputStream stdoutStream; + final ChannelInputStream stderrStream; + + // These two fields will only be written while the Channel is in state + // STATE_OPENING. + // The code makes sure that the two fields are written out when the state is + // changing to STATE_OPEN. + // Therefore, if you know that the Channel is in state STATE_OPEN, then you + // can read these two fields without synchronizing on the Channel. However, make + // sure that you get the latest values (e.g., flush caches by synchronizing on any + // object). However, to be on the safe side, you can lock the channel. + + int localID = -1; + int remoteID = -1; + + /* + * Make sure that we never send a data/EOF/WindowChange msg after a CLOSE + * msg. + * + * This is a little bit complicated, but we have to do it in that way, since + * we cannot keep a lock on the Channel during the send operation (this + * would block sometimes the receiver thread, and, in extreme cases, can + * lead to a deadlock on both sides of the connection (senders are blocked + * since the receive buffers on the other side are full, and receiver + * threads wait for the senders to finish). It all depends on the + * implementation on the other side. But we cannot make any assumptions, we + * have to assume the worst case. Confused? Just believe me. + */ + + /* + * If you send a message on a channel, then you have to aquire the + * "channelSendLock" and check the "closeMessageSent" flag (this variable + * may only be accessed while holding the "channelSendLock" !!! + * + * BTW: NEVER EVER SEND MESSAGES FROM THE RECEIVE THREAD - see explanation + * above. + */ + + final Object channelSendLock = new Object(); + boolean closeMessageSent = false; + + /* + * Stop memory fragmentation by allocating this often used buffer. + * May only be used while holding the channelSendLock + */ + + final byte[] msgWindowAdjust = new byte[9]; + + // If you access (read or write) any of the following fields, then you have + // to synchronize on the channel. + + int state = STATE_OPENING; + + boolean closeMessageRecv = false; + + /* This is a stupid implementation. At the moment we can only wait + * for one pending request per channel. + */ + int successCounter = 0; + int failedCounter = 0; + + int localWindow = 0; /* locally, we use a small window, < 2^31 */ + long remoteWindow = 0; /* long for readable 2^32 - 1 window support */ + + int localMaxPacketSize = -1; + int remoteMaxPacketSize = -1; + + final byte[] stdoutBuffer = new byte[CHANNEL_BUFFER_SIZE]; + final byte[] stderrBuffer = new byte[CHANNEL_BUFFER_SIZE]; + + int stdoutReadpos = 0; + int stdoutWritepos = 0; + int stderrReadpos = 0; + int stderrWritepos = 0; + + boolean EOF = false; + + Integer exit_status; + + String exit_signal; + + // we keep the x11 cookie so that this channel can be closed when this + // specific x11 forwarding gets stopped + + String hexX11FakeCookie; + + // reasonClosed is special, since we sometimes need to access it + // while holding the channelSendLock. + // We protect it with a private short term lock. + + private final Object reasonClosedLock = new Object(); + private String reasonClosed = null; + + public Channel(ChannelManager cm) + { + this.cm = cm; + + this.localWindow = CHANNEL_BUFFER_SIZE; + this.localMaxPacketSize = 35000 - 1024; // leave enough slack + + this.stdinStream = new ChannelOutputStream(this); + this.stdoutStream = new ChannelInputStream(this, false); + this.stderrStream = new ChannelInputStream(this, true); + } + + /* Methods to allow access from classes outside of this package */ + + public ChannelInputStream getStderrStream() + { + return stderrStream; + } + + public ChannelOutputStream getStdinStream() + { + return stdinStream; + } + + public ChannelInputStream getStdoutStream() + { + return stdoutStream; + } + + public String getExitSignal() + { + synchronized (this) + { + return exit_signal; + } + } + + public Integer getExitStatus() + { + synchronized (this) + { + return exit_status; + } + } + + public String getReasonClosed() + { + synchronized (reasonClosedLock) + { + return reasonClosed; + } + } + + public void setReasonClosed(String reasonClosed) + { + synchronized (reasonClosedLock) + { + if (this.reasonClosed == null) + this.reasonClosed = reasonClosed; + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java b/lib/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java index a6d936f..f88522c 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java @@ -1,86 +1,86 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * ChannelInputStream.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelInputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public final class ChannelInputStream extends InputStream
-{
- Channel c;
-
- boolean isClosed = false;
- boolean isEOF = false;
- boolean extendedFlag = false;
-
- ChannelInputStream(Channel c, boolean isExtended)
- {
- this.c = c;
- this.extendedFlag = isExtended;
- }
-
- public int available() throws IOException
- {
- if (isEOF)
- return 0;
-
- int avail = c.cm.getAvailable(c, extendedFlag);
-
- /* We must not return -1 on EOF */
-
- return (avail > 0) ? avail : 0;
- }
-
- public void close() throws IOException
- {
- isClosed = true;
- }
-
- public int read(byte[] b, int off, int len) throws IOException
- {
- if (b == null)
- throw new NullPointerException();
-
- if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
- throw new IndexOutOfBoundsException();
-
- if (len == 0)
- return 0;
-
- if (isEOF)
- return -1;
-
- int ret = c.cm.getChannelData(c, extendedFlag, b, off, len);
-
- if (ret == -1)
- {
- isEOF = true;
- }
-
- return ret;
- }
-
- public int read(byte[] b) throws IOException
- {
- return read(b, 0, b.length);
- }
-
- public int read() throws IOException
- {
- /* Yes, this stream is pure and unbuffered, a single byte read() is slow */
-
- final byte b[] = new byte[1];
-
- int ret = read(b, 0, 1);
-
- if (ret != 1)
- return -1;
-
- return b[0] & 0xff;
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.io.InputStream; + +/** + * ChannelInputStream. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ChannelInputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public final class ChannelInputStream extends InputStream +{ + Channel c; + + boolean isClosed = false; + boolean isEOF = false; + boolean extendedFlag = false; + + ChannelInputStream(Channel c, boolean isExtended) + { + this.c = c; + this.extendedFlag = isExtended; + } + + public int available() throws IOException + { + if (isEOF) + return 0; + + int avail = c.cm.getAvailable(c, extendedFlag); + + /* We must not return -1 on EOF */ + + return (avail > 0) ? avail : 0; + } + + public void close() throws IOException + { + isClosed = true; + } + + public int read(byte[] b, int off, int len) throws IOException + { + if (b == null) + throw new NullPointerException(); + + if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length)) + throw new IndexOutOfBoundsException(); + + if (len == 0) + return 0; + + if (isEOF) + return -1; + + int ret = c.cm.getChannelData(c, extendedFlag, b, off, len); + + if (ret == -1) + { + isEOF = true; + } + + return ret; + } + + public int read(byte[] b) throws IOException + { + return read(b, 0, b.length); + } + + public int read() throws IOException + { + /* Yes, this stream is pure and unbuffered, a single byte read() is slow */ + + final byte b[] = new byte[1]; + + int ret = read(b, 0, 1); + + if (ret != 1) + return -1; + + return b[0] & 0xff; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java b/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java index 432aef5..88beffd 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java @@ -1,1756 +1,1756 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Vector;
-
-import com.trilead.ssh2.AuthAgentCallback;
-import com.trilead.ssh2.ChannelCondition;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketChannelAuthAgentReq;
-import com.trilead.ssh2.packets.PacketChannelOpenConfirmation;
-import com.trilead.ssh2.packets.PacketChannelOpenFailure;
-import com.trilead.ssh2.packets.PacketChannelTrileadPing;
-import com.trilead.ssh2.packets.PacketGlobalCancelForwardRequest;
-import com.trilead.ssh2.packets.PacketGlobalForwardRequest;
-import com.trilead.ssh2.packets.PacketGlobalTrileadPing;
-import com.trilead.ssh2.packets.PacketOpenDirectTCPIPChannel;
-import com.trilead.ssh2.packets.PacketOpenSessionChannel;
-import com.trilead.ssh2.packets.PacketSessionExecCommand;
-import com.trilead.ssh2.packets.PacketSessionPtyRequest;
-import com.trilead.ssh2.packets.PacketSessionPtyResize;
-import com.trilead.ssh2.packets.PacketSessionStartShell;
-import com.trilead.ssh2.packets.PacketSessionSubsystemRequest;
-import com.trilead.ssh2.packets.PacketSessionX11Request;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.transport.MessageHandler;
-import com.trilead.ssh2.transport.TransportManager;
-
-/**
- * ChannelManager. Please read the comments in Channel.java.
- * <p>
- * Besides the crypto part, this is the core of the library.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelManager.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-public class ChannelManager implements MessageHandler
-{
- private static final Logger log = Logger.getLogger(ChannelManager.class);
-
- private HashMap<String, X11ServerData> x11_magic_cookies = new HashMap<String, X11ServerData>();
-
- private TransportManager tm;
-
- private Vector<Channel> channels = new Vector<Channel>();
- private int nextLocalChannel = 100;
- private boolean shutdown = false;
- private int globalSuccessCounter = 0;
- private int globalFailedCounter = 0;
-
- private HashMap<Integer, RemoteForwardingData> remoteForwardings = new HashMap<Integer, RemoteForwardingData>();
-
- private AuthAgentCallback authAgent;
-
- private Vector<IChannelWorkerThread> listenerThreads = new Vector<IChannelWorkerThread>();
-
- private boolean listenerThreadsAllowed = true;
-
- public ChannelManager(TransportManager tm)
- {
- this.tm = tm;
- tm.registerMessageHandler(this, 80, 100);
- }
-
- private Channel getChannel(int id)
- {
- synchronized (channels)
- {
- for (int i = 0; i < channels.size(); i++)
- {
- Channel c = channels.elementAt(i);
- if (c.localID == id)
- return c;
- }
- }
- return null;
- }
-
- private void removeChannel(int id)
- {
- synchronized (channels)
- {
- for (int i = 0; i < channels.size(); i++)
- {
- Channel c = channels.elementAt(i);
- if (c.localID == id)
- {
- channels.removeElementAt(i);
- break;
- }
- }
- }
- }
-
- private int addChannel(Channel c)
- {
- synchronized (channels)
- {
- channels.addElement(c);
- return nextLocalChannel++;
- }
- }
-
- private void waitUntilChannelOpen(Channel c) throws IOException
- {
- synchronized (c)
- {
- while (c.state == Channel.STATE_OPENING)
- {
- try
- {
- c.wait();
- }
- catch (InterruptedException ignore)
- {
- }
- }
-
- if (c.state != Channel.STATE_OPEN)
- {
- removeChannel(c.localID);
-
- String detail = c.getReasonClosed();
-
- if (detail == null)
- detail = "state: " + c.state;
-
- throw new IOException("Could not open channel (" + detail + ")");
- }
- }
- }
-
- private final boolean waitForGlobalRequestResult() throws IOException
- {
- synchronized (channels)
- {
- while ((globalSuccessCounter == 0) && (globalFailedCounter == 0))
- {
- if (shutdown)
- {
- throw new IOException("The connection is being shutdown");
- }
-
- try
- {
- channels.wait();
- }
- catch (InterruptedException ignore)
- {
- }
- }
-
- if ((globalFailedCounter == 0) && (globalSuccessCounter == 1))
- return true;
-
- if ((globalFailedCounter == 1) && (globalSuccessCounter == 0))
- return false;
-
- throw new IOException("Illegal state. The server sent " + globalSuccessCounter
- + " SSH_MSG_REQUEST_SUCCESS and " + globalFailedCounter + " SSH_MSG_REQUEST_FAILURE messages.");
- }
- }
-
- private final boolean waitForChannelRequestResult(Channel c) throws IOException
- {
- synchronized (c)
- {
- while ((c.successCounter == 0) && (c.failedCounter == 0))
- {
- if (c.state != Channel.STATE_OPEN)
- {
- String detail = c.getReasonClosed();
-
- if (detail == null)
- detail = "state: " + c.state;
-
- throw new IOException("This SSH2 channel is not open (" + detail + ")");
- }
-
- try
- {
- c.wait();
- }
- catch (InterruptedException ignore)
- {
- }
- }
-
- if ((c.failedCounter == 0) && (c.successCounter == 1))
- return true;
-
- if ((c.failedCounter == 1) && (c.successCounter == 0))
- return false;
-
- throw new IOException("Illegal state. The server sent " + c.successCounter
- + " SSH_MSG_CHANNEL_SUCCESS and " + c.failedCounter + " SSH_MSG_CHANNEL_FAILURE messages.");
- }
- }
-
- public void registerX11Cookie(String hexFakeCookie, X11ServerData data)
- {
- synchronized (x11_magic_cookies)
- {
- x11_magic_cookies.put(hexFakeCookie, data);
- }
- }
-
- public void unRegisterX11Cookie(String hexFakeCookie, boolean killChannels)
- {
- if (hexFakeCookie == null)
- throw new IllegalStateException("hexFakeCookie may not be null");
-
- synchronized (x11_magic_cookies)
- {
- x11_magic_cookies.remove(hexFakeCookie);
- }
-
- if (killChannels == false)
- return;
-
- if (log.isEnabled())
- log.log(50, "Closing all X11 channels for the given fake cookie");
-
- Vector<Channel> channel_copy;
-
- synchronized (channels)
- {
- channel_copy = (Vector<Channel>) channels.clone();
- }
-
- for (int i = 0; i < channel_copy.size(); i++)
- {
- Channel c = channel_copy.elementAt(i);
-
- synchronized (c)
- {
- if (hexFakeCookie.equals(c.hexX11FakeCookie) == false)
- continue;
- }
-
- try
- {
- closeChannel(c, "Closing X11 channel since the corresponding session is closing", true);
- }
- catch (IOException e)
- {
- }
- }
- }
-
- public X11ServerData checkX11Cookie(String hexFakeCookie)
- {
- synchronized (x11_magic_cookies)
- {
- if (hexFakeCookie != null)
- return x11_magic_cookies.get(hexFakeCookie);
- }
- return null;
- }
-
- public void closeAllChannels()
- {
- if (log.isEnabled())
- log.log(50, "Closing all channels");
-
- Vector<Channel> channel_copy;
-
- synchronized (channels)
- {
- channel_copy = (Vector<Channel>) channels.clone();
- }
-
- for (int i = 0; i < channel_copy.size(); i++)
- {
- Channel c = channel_copy.elementAt(i);
- try
- {
- closeChannel(c, "Closing all channels", true);
- }
- catch (IOException e)
- {
- }
- }
- }
-
- public void closeChannel(Channel c, String reason, boolean force) throws IOException
- {
- byte msg[] = new byte[5];
-
- synchronized (c)
- {
- if (force)
- {
- c.state = Channel.STATE_CLOSED;
- c.EOF = true;
- }
-
- c.setReasonClosed(reason);
-
- msg[0] = Packets.SSH_MSG_CHANNEL_CLOSE;
- msg[1] = (byte) (c.remoteID >> 24);
- msg[2] = (byte) (c.remoteID >> 16);
- msg[3] = (byte) (c.remoteID >> 8);
- msg[4] = (byte) (c.remoteID);
-
- c.notifyAll();
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent == true)
- return;
- tm.sendMessage(msg);
- c.closeMessageSent = true;
- }
-
- if (log.isEnabled())
- log.log(50, "Sent SSH_MSG_CHANNEL_CLOSE (channel " + c.localID + ")");
- }
-
- public void sendEOF(Channel c) throws IOException
- {
- byte[] msg = new byte[5];
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- return;
-
- msg[0] = Packets.SSH_MSG_CHANNEL_EOF;
- msg[1] = (byte) (c.remoteID >> 24);
- msg[2] = (byte) (c.remoteID >> 16);
- msg[3] = (byte) (c.remoteID >> 8);
- msg[4] = (byte) (c.remoteID);
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent == true)
- return;
- tm.sendMessage(msg);
- }
-
- if (log.isEnabled())
- log.log(50, "Sent EOF (Channel " + c.localID + "/" + c.remoteID + ")");
- }
-
- public void sendOpenConfirmation(Channel c) throws IOException
- {
- PacketChannelOpenConfirmation pcoc = null;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPENING)
- return;
-
- c.state = Channel.STATE_OPEN;
-
- pcoc = new PacketChannelOpenConfirmation(c.remoteID, c.localID, c.localWindow, c.localMaxPacketSize);
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent == true)
- return;
- tm.sendMessage(pcoc.getPayload());
- }
- }
-
- public void sendData(Channel c, byte[] buffer, int pos, int len) throws IOException
- {
- while (len > 0)
- {
- int thislen = 0;
- byte[] msg;
-
- synchronized (c)
- {
- while (true)
- {
- if (c.state == Channel.STATE_CLOSED)
- throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")");
-
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("SSH channel in strange state. (" + c.state + ")");
-
- if (c.remoteWindow != 0)
- break;
-
- try
- {
- c.wait();
- }
- catch (InterruptedException ignore)
- {
- }
- }
-
- /* len > 0, no sign extension can happen when comparing */
-
- thislen = (c.remoteWindow >= len) ? len : (int) c.remoteWindow;
-
- int estimatedMaxDataLen = c.remoteMaxPacketSize - (tm.getPacketOverheadEstimate() + 9);
-
- /* The worst case scenario =) a true bottleneck */
-
- if (estimatedMaxDataLen <= 0)
- {
- estimatedMaxDataLen = 1;
- }
-
- if (thislen > estimatedMaxDataLen)
- thislen = estimatedMaxDataLen;
-
- c.remoteWindow -= thislen;
-
- msg = new byte[1 + 8 + thislen];
-
- msg[0] = Packets.SSH_MSG_CHANNEL_DATA;
- msg[1] = (byte) (c.remoteID >> 24);
- msg[2] = (byte) (c.remoteID >> 16);
- msg[3] = (byte) (c.remoteID >> 8);
- msg[4] = (byte) (c.remoteID);
- msg[5] = (byte) (thislen >> 24);
- msg[6] = (byte) (thislen >> 16);
- msg[7] = (byte) (thislen >> 8);
- msg[8] = (byte) (thislen);
-
- System.arraycopy(buffer, pos, msg, 9, thislen);
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent == true)
- throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")");
-
- tm.sendMessage(msg);
- }
-
- pos += thislen;
- len -= thislen;
- }
- }
-
- public int requestGlobalForward(String bindAddress, int bindPort, String targetAddress, int targetPort)
- throws IOException
- {
- RemoteForwardingData rfd = new RemoteForwardingData();
-
- rfd.bindAddress = bindAddress;
- rfd.bindPort = bindPort;
- rfd.targetAddress = targetAddress;
- rfd.targetPort = targetPort;
-
- synchronized (remoteForwardings)
- {
- Integer key = Integer.valueOf(bindPort);
-
- if (remoteForwardings.get(key) != null)
- {
- throw new IOException("There is already a forwarding for remote port " + bindPort);
- }
-
- remoteForwardings.put(key, rfd);
- }
-
- synchronized (channels)
- {
- globalSuccessCounter = globalFailedCounter = 0;
- }
-
- PacketGlobalForwardRequest pgf = new PacketGlobalForwardRequest(true, bindAddress, bindPort);
- tm.sendMessage(pgf.getPayload());
-
- if (log.isEnabled())
- log.log(50, "Requesting a remote forwarding ('" + bindAddress + "', " + bindPort + ")");
-
- try
- {
- if (waitForGlobalRequestResult() == false)
- throw new IOException("The server denied the request (did you enable port forwarding?)");
- }
- catch (IOException e)
- {
- synchronized (remoteForwardings)
- {
- remoteForwardings.remove(rfd);
- }
- throw e;
- }
-
- return bindPort;
- }
-
- public void requestCancelGlobalForward(int bindPort) throws IOException
- {
- RemoteForwardingData rfd = null;
-
- synchronized (remoteForwardings)
- {
- rfd = remoteForwardings.get(Integer.valueOf(bindPort));
-
- if (rfd == null)
- throw new IOException("Sorry, there is no known remote forwarding for remote port " + bindPort);
- }
-
- synchronized (channels)
- {
- globalSuccessCounter = globalFailedCounter = 0;
- }
-
- PacketGlobalCancelForwardRequest pgcf = new PacketGlobalCancelForwardRequest(true, rfd.bindAddress,
- rfd.bindPort);
- tm.sendMessage(pgcf.getPayload());
-
- if (log.isEnabled())
- log.log(50, "Requesting cancelation of remote forward ('" + rfd.bindAddress + "', " + rfd.bindPort + ")");
-
- try
- {
- if (waitForGlobalRequestResult() == false)
- throw new IOException("The server denied the request.");
- }
- finally
- {
- synchronized (remoteForwardings)
- {
- /* Only now we are sure that no more forwarded connections will arrive */
- remoteForwardings.remove(rfd);
- }
- }
-
- }
-
- /**
- * @param agent
- * @throws IOException
- */
- public boolean requestChannelAgentForwarding(Channel c, AuthAgentCallback authAgent) throws IOException {
- synchronized (this)
- {
- if (this.authAgent != null)
- throw new IllegalStateException("Auth agent already exists");
-
- this.authAgent = authAgent;
- }
-
- synchronized (channels)
- {
- globalSuccessCounter = globalFailedCounter = 0;
- }
-
- if (log.isEnabled())
- log.log(50, "Requesting agent forwarding");
-
- PacketChannelAuthAgentReq aar = new PacketChannelAuthAgentReq(c.remoteID);
- tm.sendMessage(aar.getPayload());
-
- if (waitForChannelRequestResult(c) == false) {
- authAgent = null;
- return false;
- }
-
- return true;
- }
-
- public void registerThread(IChannelWorkerThread thr) throws IOException
- {
- synchronized (listenerThreads)
- {
- if (listenerThreadsAllowed == false)
- throw new IOException("Too late, this connection is closed.");
- listenerThreads.addElement(thr);
- }
- }
-
- public Channel openDirectTCPIPChannel(String host_to_connect, int port_to_connect, String originator_IP_address,
- int originator_port) throws IOException
- {
- Channel c = new Channel(this);
-
- synchronized (c)
- {
- c.localID = addChannel(c);
- // end of synchronized block forces writing out to main memory
- }
-
- PacketOpenDirectTCPIPChannel dtc = new PacketOpenDirectTCPIPChannel(c.localID, c.localWindow,
- c.localMaxPacketSize, host_to_connect, port_to_connect, originator_IP_address, originator_port);
-
- tm.sendMessage(dtc.getPayload());
-
- waitUntilChannelOpen(c);
-
- return c;
- }
-
- public Channel openSessionChannel() throws IOException
- {
- Channel c = new Channel(this);
-
- synchronized (c)
- {
- c.localID = addChannel(c);
- // end of synchronized block forces the writing out to main memory
- }
-
- if (log.isEnabled())
- log.log(50, "Sending SSH_MSG_CHANNEL_OPEN (Channel " + c.localID + ")");
-
- PacketOpenSessionChannel smo = new PacketOpenSessionChannel(c.localID, c.localWindow, c.localMaxPacketSize);
- tm.sendMessage(smo.getPayload());
-
- waitUntilChannelOpen(c);
-
- return c;
- }
-
- public void requestGlobalTrileadPing() throws IOException
- {
- synchronized (channels)
- {
- globalSuccessCounter = globalFailedCounter = 0;
- }
-
- PacketGlobalTrileadPing pgtp = new PacketGlobalTrileadPing();
-
- tm.sendMessage(pgtp.getPayload());
-
- if (log.isEnabled())
- log.log(50, "Sending SSH_MSG_GLOBAL_REQUEST 'trilead-ping'.");
-
- try
- {
- if (waitForGlobalRequestResult() == true)
- throw new IOException("Your server is alive - but buggy. "
- + "It replied with SSH_MSG_REQUEST_SUCCESS when it actually should not.");
-
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The ping request failed.").initCause(e);
- }
- }
-
- public void requestChannelTrileadPing(Channel c) throws IOException
- {
- PacketChannelTrileadPing pctp;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")");
-
- pctp = new PacketChannelTrileadPing(c.remoteID);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(pctp.getPayload());
- }
-
- try
- {
- if (waitForChannelRequestResult(c) == true)
- throw new IOException("Your server is alive - but buggy. "
- + "It replied with SSH_MSG_SESSION_SUCCESS when it actually should not.");
-
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The ping request failed.").initCause(e);
- }
- }
-
- public void requestPTY(Channel c, String term, int term_width_characters, int term_height_characters,
- int term_width_pixels, int term_height_pixels, byte[] terminal_modes) throws IOException
- {
- PacketSessionPtyRequest spr;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")");
-
- spr = new PacketSessionPtyRequest(c.remoteID, true, term, term_width_characters, term_height_characters,
- term_width_pixels, term_height_pixels, terminal_modes);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(spr.getPayload());
- }
-
- try
- {
- if (waitForChannelRequestResult(c) == false)
- throw new IOException("The server denied the request.");
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("PTY request failed").initCause(e);
- }
- }
-
-
- public void resizePTY(Channel c, int term_width_characters, int term_height_characters,
- int term_width_pixels, int term_height_pixels) throws IOException {
- PacketSessionPtyResize spr;
-
- synchronized (c) {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot request PTY on this channel ("
- + c.getReasonClosed() + ")");
-
- spr = new PacketSessionPtyResize(c.remoteID, term_width_characters, term_height_characters,
- term_width_pixels, term_height_pixels);
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock) {
- if (c.closeMessageSent)
- throw new IOException("Cannot request PTY on this channel ("
- + c.getReasonClosed() + ")");
- tm.sendMessage(spr.getPayload());
- }
- }
-
-
- public void requestX11(Channel c, boolean singleConnection, String x11AuthenticationProtocol,
- String x11AuthenticationCookie, int x11ScreenNumber) throws IOException
- {
- PacketSessionX11Request psr;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")");
-
- psr = new PacketSessionX11Request(c.remoteID, true, singleConnection, x11AuthenticationProtocol,
- x11AuthenticationCookie, x11ScreenNumber);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(psr.getPayload());
- }
-
- if (log.isEnabled())
- log.log(50, "Requesting X11 forwarding (Channel " + c.localID + "/" + c.remoteID + ")");
-
- try
- {
- if (waitForChannelRequestResult(c) == false)
- throw new IOException("The server denied the request.");
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The X11 request failed.").initCause(e);
- }
- }
-
- public void requestSubSystem(Channel c, String subSystemName) throws IOException
- {
- PacketSessionSubsystemRequest ssr;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")");
-
- ssr = new PacketSessionSubsystemRequest(c.remoteID, true, subSystemName);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(ssr.getPayload());
- }
-
- try
- {
- if (waitForChannelRequestResult(c) == false)
- throw new IOException("The server denied the request.");
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The subsystem request failed.").initCause(e);
- }
- }
-
- public void requestExecCommand(Channel c, String cmd) throws IOException
- {
- PacketSessionExecCommand sm;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")");
-
- sm = new PacketSessionExecCommand(c.remoteID, true, cmd);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(sm.getPayload());
- }
-
- if (log.isEnabled())
- log.log(50, "Executing command (channel " + c.localID + ", '" + cmd + "')");
-
- try
- {
- if (waitForChannelRequestResult(c) == false)
- throw new IOException("The server denied the request.");
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The execute request failed.").initCause(e);
- }
- }
-
- public void requestShell(Channel c) throws IOException
- {
- PacketSessionStartShell sm;
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")");
-
- sm = new PacketSessionStartShell(c.remoteID, true);
-
- c.successCounter = c.failedCounter = 0;
- }
-
- synchronized (c.channelSendLock)
- {
- if (c.closeMessageSent)
- throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")");
- tm.sendMessage(sm.getPayload());
- }
-
- try
- {
- if (waitForChannelRequestResult(c) == false)
- throw new IOException("The server denied the request.");
- }
- catch (IOException e)
- {
- throw (IOException) new IOException("The shell request failed.").initCause(e);
- }
- }
-
- public void msgChannelExtendedData(byte[] msg, int msglen) throws IOException
- {
- if (msglen <= 13)
- throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
- int dataType = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
- int len = ((msg[9] & 0xff) << 24) | ((msg[10] & 0xff) << 16) | ((msg[11] & 0xff) << 8) | (msg[12] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_EXTENDED_DATA message for non-existent channel " + id);
-
- if (dataType != Packets.SSH_EXTENDED_DATA_STDERR)
- throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has unknown type (" + dataType + ")");
-
- if (len != (msglen - 13))
- throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong len (calculated " + (msglen - 13)
- + ", got " + len + ")");
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_CHANNEL_EXTENDED_DATA (channel " + id + ", " + len + ")");
-
- synchronized (c)
- {
- if (c.state == Channel.STATE_CLOSED)
- return; // ignore
-
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Got SSH_MSG_CHANNEL_EXTENDED_DATA, but channel is not in correct state ("
- + c.state + ")");
-
- if (c.localWindow < len)
- throw new IOException("Remote sent too much data, does not fit into window.");
-
- c.localWindow -= len;
-
- System.arraycopy(msg, 13, c.stderrBuffer, c.stderrWritepos, len);
- c.stderrWritepos += len;
-
- c.notifyAll();
- }
- }
-
- /**
- * Wait until for a condition.
- *
- * @param c
- * Channel
- * @param timeout
- * in ms, 0 means no timeout.
- * @param condition_mask
- * minimum event mask
- * @return all current events
- *
- */
- public int waitForCondition(Channel c, long timeout, int condition_mask)
- {
- long end_time = 0;
- boolean end_time_set = false;
-
- synchronized (c)
- {
- while (true)
- {
- int current_cond = 0;
-
- int stdoutAvail = c.stdoutWritepos - c.stdoutReadpos;
- int stderrAvail = c.stderrWritepos - c.stderrReadpos;
-
- if (stdoutAvail > 0)
- current_cond = current_cond | ChannelCondition.STDOUT_DATA;
-
- if (stderrAvail > 0)
- current_cond = current_cond | ChannelCondition.STDERR_DATA;
-
- if (c.EOF)
- current_cond = current_cond | ChannelCondition.EOF;
-
- if (c.getExitStatus() != null)
- current_cond = current_cond | ChannelCondition.EXIT_STATUS;
-
- if (c.getExitSignal() != null)
- current_cond = current_cond | ChannelCondition.EXIT_SIGNAL;
-
- if (c.state == Channel.STATE_CLOSED)
- return current_cond | ChannelCondition.CLOSED | ChannelCondition.EOF;
-
- if ((current_cond & condition_mask) != 0)
- return current_cond;
-
- if (timeout > 0)
- {
- if (!end_time_set)
- {
- end_time = System.currentTimeMillis() + timeout;
- end_time_set = true;
- }
- else
- {
- timeout = end_time - System.currentTimeMillis();
-
- if (timeout <= 0)
- return current_cond | ChannelCondition.TIMEOUT;
- }
- }
-
- try
- {
- if (timeout > 0)
- c.wait(timeout);
- else
- c.wait();
- }
- catch (InterruptedException e)
- {
- }
- }
- }
- }
-
- public int getAvailable(Channel c, boolean extended) throws IOException
- {
- synchronized (c)
- {
- int avail;
-
- if (extended)
- avail = c.stderrWritepos - c.stderrReadpos;
- else
- avail = c.stdoutWritepos - c.stdoutReadpos;
-
- return ((avail > 0) ? avail : (c.EOF ? -1 : 0));
- }
- }
-
- public int getChannelData(Channel c, boolean extended, byte[] target, int off, int len) throws IOException
- {
- int copylen = 0;
- int increment = 0;
- int remoteID = 0;
- int localID = 0;
-
- synchronized (c)
- {
- int stdoutAvail = 0;
- int stderrAvail = 0;
-
- while (true)
- {
- /*
- * Data available? We have to return remaining data even if the
- * channel is already closed.
- */
-
- stdoutAvail = c.stdoutWritepos - c.stdoutReadpos;
- stderrAvail = c.stderrWritepos - c.stderrReadpos;
-
- if ((!extended) && (stdoutAvail != 0))
- break;
-
- if ((extended) && (stderrAvail != 0))
- break;
-
- /* Do not wait if more data will never arrive (EOF or CLOSED) */
-
- if ((c.EOF) || (c.state != Channel.STATE_OPEN))
- return -1;
-
- try
- {
- c.wait();
- }
- catch (InterruptedException ignore)
- {
- }
- }
-
- /* OK, there is some data. Return it. */
-
- if (!extended)
- {
- copylen = (stdoutAvail > len) ? len : stdoutAvail;
- System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, target, off, copylen);
- c.stdoutReadpos += copylen;
-
- if (c.stdoutReadpos != c.stdoutWritepos)
-
- System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, c.stdoutBuffer, 0, c.stdoutWritepos
- - c.stdoutReadpos);
-
- c.stdoutWritepos -= c.stdoutReadpos;
- c.stdoutReadpos = 0;
- }
- else
- {
- copylen = (stderrAvail > len) ? len : stderrAvail;
- System.arraycopy(c.stderrBuffer, c.stderrReadpos, target, off, copylen);
- c.stderrReadpos += copylen;
-
- if (c.stderrReadpos != c.stderrWritepos)
-
- System.arraycopy(c.stderrBuffer, c.stderrReadpos, c.stderrBuffer, 0, c.stderrWritepos
- - c.stderrReadpos);
-
- c.stderrWritepos -= c.stderrReadpos;
- c.stderrReadpos = 0;
- }
-
- if (c.state != Channel.STATE_OPEN)
- return copylen;
-
- if (c.localWindow < ((Channel.CHANNEL_BUFFER_SIZE + 1) / 2))
- {
- int minFreeSpace = Math.min(Channel.CHANNEL_BUFFER_SIZE - c.stdoutWritepos, Channel.CHANNEL_BUFFER_SIZE
- - c.stderrWritepos);
-
- increment = minFreeSpace - c.localWindow;
- c.localWindow = minFreeSpace;
- }
-
- remoteID = c.remoteID; /* read while holding the lock */
- localID = c.localID; /* read while holding the lock */
- }
-
- /*
- * If a consumer reads stdout and stdin in parallel, we may end up with
- * sending two msgWindowAdjust messages. Luckily, it
- * does not matter in which order they arrive at the server.
- */
-
- if (increment > 0)
- {
- if (log.isEnabled())
- log.log(80, "Sending SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + localID + ", " + increment + ")");
-
- synchronized (c.channelSendLock)
- {
- byte[] msg = c.msgWindowAdjust;
-
- msg[0] = Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST;
- msg[1] = (byte) (remoteID >> 24);
- msg[2] = (byte) (remoteID >> 16);
- msg[3] = (byte) (remoteID >> 8);
- msg[4] = (byte) (remoteID);
- msg[5] = (byte) (increment >> 24);
- msg[6] = (byte) (increment >> 16);
- msg[7] = (byte) (increment >> 8);
- msg[8] = (byte) (increment);
-
- if (c.closeMessageSent == false)
- tm.sendMessage(msg);
- }
- }
-
- return copylen;
- }
-
- public void msgChannelData(byte[] msg, int msglen) throws IOException
- {
- if (msglen <= 9)
- throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
- int len = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_DATA message for non-existent channel " + id);
-
- if (len != (msglen - 9))
- throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong len (calculated " + (msglen - 9) + ", got "
- + len + ")");
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_CHANNEL_DATA (channel " + id + ", " + len + ")");
-
- synchronized (c)
- {
- if (c.state == Channel.STATE_CLOSED)
- return; // ignore
-
- if (c.state != Channel.STATE_OPEN)
- throw new IOException("Got SSH_MSG_CHANNEL_DATA, but channel is not in correct state (" + c.state + ")");
-
- if (c.localWindow < len)
- throw new IOException("Remote sent too much data, does not fit into window.");
-
- c.localWindow -= len;
-
- System.arraycopy(msg, 9, c.stdoutBuffer, c.stdoutWritepos, len);
- c.stdoutWritepos += len;
-
- c.notifyAll();
- }
- }
-
- public void msgChannelWindowAdjust(byte[] msg, int msglen) throws IOException
- {
- if (msglen != 9)
- throw new IOException("SSH_MSG_CHANNEL_WINDOW_ADJUST message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
- int windowChange = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_WINDOW_ADJUST message for non-existent channel " + id);
-
- synchronized (c)
- {
- final long huge = 0xFFFFffffL; /* 2^32 - 1 */
-
- c.remoteWindow += (windowChange & huge); /* avoid sign extension */
-
- /* TODO - is this a good heuristic? */
-
- if ((c.remoteWindow > huge))
- c.remoteWindow = huge;
-
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + id + ", " + windowChange + ")");
- }
-
- public void msgChannelOpen(byte[] msg, int msglen) throws IOException
- {
- TypesReader tr = new TypesReader(msg, 0, msglen);
-
- tr.readByte(); // skip packet type
- String channelType = tr.readString();
- int remoteID = tr.readUINT32(); /* sender channel */
- int remoteWindow = tr.readUINT32(); /* initial window size */
- int remoteMaxPacketSize = tr.readUINT32(); /* maximum packet size */
-
- if ("x11".equals(channelType))
- {
- synchronized (x11_magic_cookies)
- {
- /* If we did not request X11 forwarding, then simply ignore this bogus request. */
-
- if (x11_magic_cookies.size() == 0)
- {
- PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID,
- Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, "X11 forwarding not activated", "");
-
- tm.sendAsynchronousMessage(pcof.getPayload());
-
- if (log.isEnabled())
- log.log(20, "Unexpected X11 request, denying it!");
-
- return;
- }
- }
-
- String remoteOriginatorAddress = tr.readString();
- int remoteOriginatorPort = tr.readUINT32();
-
- Channel c = new Channel(this);
-
- synchronized (c)
- {
- c.remoteID = remoteID;
- c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */
- c.remoteMaxPacketSize = remoteMaxPacketSize;
- c.localID = addChannel(c);
- }
-
- /*
- * The open confirmation message will be sent from another thread
- */
-
- RemoteX11AcceptThread rxat = new RemoteX11AcceptThread(c, remoteOriginatorAddress, remoteOriginatorPort);
- rxat.setDaemon(true);
- rxat.start();
-
- return;
- }
-
- if ("forwarded-tcpip".equals(channelType))
- {
- String remoteConnectedAddress = tr.readString(); /* address that was connected */
- int remoteConnectedPort = tr.readUINT32(); /* port that was connected */
- String remoteOriginatorAddress = tr.readString(); /* originator IP address */
- int remoteOriginatorPort = tr.readUINT32(); /* originator port */
-
- RemoteForwardingData rfd = null;
-
- synchronized (remoteForwardings)
- {
- rfd = remoteForwardings.get(Integer.valueOf(remoteConnectedPort));
- }
-
- if (rfd == null)
- {
- PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID,
- Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED,
- "No thanks, unknown port in forwarded-tcpip request", "");
-
- /* Always try to be polite. */
-
- tm.sendAsynchronousMessage(pcof.getPayload());
-
- if (log.isEnabled())
- log.log(20, "Unexpected forwarded-tcpip request, denying it!");
-
- return;
- }
-
- Channel c = new Channel(this);
-
- synchronized (c)
- {
- c.remoteID = remoteID;
- c.remoteWindow = remoteWindow & 0xFFFFffffL; /* convert UINT32 to long */
- c.remoteMaxPacketSize = remoteMaxPacketSize;
- c.localID = addChannel(c);
- }
-
- /*
- * The open confirmation message will be sent from another thread.
- */
-
- RemoteAcceptThread rat = new RemoteAcceptThread(c, remoteConnectedAddress, remoteConnectedPort,
- remoteOriginatorAddress, remoteOriginatorPort, rfd.targetAddress, rfd.targetPort);
-
- rat.setDaemon(true);
- rat.start();
-
- return;
- }
-
- if ("auth-agent@openssh.com".equals(channelType)) {
- Channel c = new Channel(this);
-
- synchronized (c)
- {
- c.remoteID = remoteID;
- c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */
- c.remoteMaxPacketSize = remoteMaxPacketSize;
- c.localID = addChannel(c);
- }
-
- AuthAgentForwardThread aat = new AuthAgentForwardThread(c, authAgent);
-
- aat.setDaemon(true);
- aat.start();
-
- return;
- }
-
- /* Tell the server that we have no idea what it is talking about */
-
- PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID, Packets.SSH_OPEN_UNKNOWN_CHANNEL_TYPE,
- "Unknown channel type", "");
-
- tm.sendAsynchronousMessage(pcof.getPayload());
-
- if (log.isEnabled())
- log.log(20, "The peer tried to open an unsupported channel type (" + channelType + ")");
- }
-
- public void msgChannelRequest(byte[] msg, int msglen) throws IOException
- {
- TypesReader tr = new TypesReader(msg, 0, msglen);
-
- tr.readByte(); // skip packet type
- int id = tr.readUINT32();
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_REQUEST message for non-existent channel " + id);
-
- String type = tr.readString("US-ASCII");
- boolean wantReply = tr.readBoolean();
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_CHANNEL_REQUEST (channel " + id + ", '" + type + "')");
-
- if (type.equals("exit-status"))
- {
- if (wantReply != false)
- throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");
-
- int exit_status = tr.readUINT32();
-
- if (tr.remain() != 0)
- throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");
-
- synchronized (c)
- {
- c.exit_status = Integer.valueOf(exit_status);
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got EXIT STATUS (channel " + id + ", status " + exit_status + ")");
-
- return;
- }
-
- if (type.equals("exit-signal"))
- {
- if (wantReply != false)
- throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");
-
- String signame = tr.readString("US-ASCII");
- tr.readBoolean();
- tr.readString();
- tr.readString();
-
- if (tr.remain() != 0)
- throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");
-
- synchronized (c)
- {
- c.exit_signal = signame;
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got EXIT SIGNAL (channel " + id + ", signal " + signame + ")");
-
- return;
- }
-
- /* We simply ignore unknown channel requests, however, if the server wants a reply,
- * then we signal that we have no idea what it is about.
- */
-
- if (wantReply)
- {
- byte[] reply = new byte[5];
-
- reply[0] = Packets.SSH_MSG_CHANNEL_FAILURE;
- reply[1] = (byte) (c.remoteID >> 24);
- reply[2] = (byte) (c.remoteID >> 16);
- reply[3] = (byte) (c.remoteID >> 8);
- reply[4] = (byte) (c.remoteID);
-
- tm.sendAsynchronousMessage(reply);
- }
-
- if (log.isEnabled())
- log.log(50, "Channel request '" + type + "' is not known, ignoring it");
- }
-
- public void msgChannelEOF(byte[] msg, int msglen) throws IOException
- {
- if (msglen != 5)
- throw new IOException("SSH_MSG_CHANNEL_EOF message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_EOF message for non-existent channel " + id);
-
- synchronized (c)
- {
- c.EOF = true;
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got SSH_MSG_CHANNEL_EOF (channel " + id + ")");
- }
-
- public void msgChannelClose(byte[] msg, int msglen) throws IOException
- {
- if (msglen != 5)
- throw new IOException("SSH_MSG_CHANNEL_CLOSE message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_CLOSE message for non-existent channel " + id);
-
- synchronized (c)
- {
- c.EOF = true;
- c.state = Channel.STATE_CLOSED;
- c.setReasonClosed("Close requested by remote");
- c.closeMessageRecv = true;
-
- removeChannel(c.localID);
-
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got SSH_MSG_CHANNEL_CLOSE (channel " + id + ")");
- }
-
- public void msgChannelSuccess(byte[] msg, int msglen) throws IOException
- {
- if (msglen != 5)
- throw new IOException("SSH_MSG_CHANNEL_SUCCESS message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_SUCCESS message for non-existent channel " + id);
-
- synchronized (c)
- {
- c.successCounter++;
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_CHANNEL_SUCCESS (channel " + id + ")");
- }
-
- public void msgChannelFailure(byte[] msg, int msglen) throws IOException
- {
- if (msglen != 5)
- throw new IOException("SSH_MSG_CHANNEL_FAILURE message has wrong size (" + msglen + ")");
-
- int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_FAILURE message for non-existent channel " + id);
-
- synchronized (c)
- {
- c.failedCounter++;
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got SSH_MSG_CHANNEL_FAILURE (channel " + id + ")");
- }
-
- public void msgChannelOpenConfirmation(byte[] msg, int msglen) throws IOException
- {
- PacketChannelOpenConfirmation sm = new PacketChannelOpenConfirmation(msg, 0, msglen);
-
- Channel c = getChannel(sm.recipientChannelID);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for non-existent channel "
- + sm.recipientChannelID);
-
- synchronized (c)
- {
- if (c.state != Channel.STATE_OPENING)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for channel "
- + sm.recipientChannelID);
-
- c.remoteID = sm.senderChannelID;
- c.remoteWindow = sm.initialWindowSize & 0xFFFFffffL; /* convert UINT32 to long */
- c.remoteMaxPacketSize = sm.maxPacketSize;
- c.state = Channel.STATE_OPEN;
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got SSH_MSG_CHANNEL_OPEN_CONFIRMATION (channel " + sm.recipientChannelID + " / remote: "
- + sm.senderChannelID + ")");
- }
-
- public void msgChannelOpenFailure(byte[] msg, int msglen) throws IOException
- {
- if (msglen < 5)
- throw new IOException("SSH_MSG_CHANNEL_OPEN_FAILURE message has wrong size (" + msglen + ")");
-
- TypesReader tr = new TypesReader(msg, 0, msglen);
-
- tr.readByte(); // skip packet type
- int id = tr.readUINT32(); /* sender channel */
-
- Channel c = getChannel(id);
-
- if (c == null)
- throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_FAILURE message for non-existent channel " + id);
-
- int reasonCode = tr.readUINT32();
- String description = tr.readString("UTF-8");
-
- String reasonCodeSymbolicName = null;
-
- switch (reasonCode)
- {
- case 1:
- reasonCodeSymbolicName = "SSH_OPEN_ADMINISTRATIVELY_PROHIBITED";
- break;
- case 2:
- reasonCodeSymbolicName = "SSH_OPEN_CONNECT_FAILED";
- break;
- case 3:
- reasonCodeSymbolicName = "SSH_OPEN_UNKNOWN_CHANNEL_TYPE";
- break;
- case 4:
- reasonCodeSymbolicName = "SSH_OPEN_RESOURCE_SHORTAGE";
- break;
- default:
- reasonCodeSymbolicName = "UNKNOWN REASON CODE (" + reasonCode + ")";
- }
-
- StringBuffer descriptionBuffer = new StringBuffer();
- descriptionBuffer.append(description);
-
- for (int i = 0; i < descriptionBuffer.length(); i++)
- {
- char cc = descriptionBuffer.charAt(i);
-
- if ((cc >= 32) && (cc <= 126))
- continue;
- descriptionBuffer.setCharAt(i, '\uFFFD');
- }
-
- synchronized (c)
- {
- c.EOF = true;
- c.state = Channel.STATE_CLOSED;
- c.setReasonClosed("The server refused to open the channel (" + reasonCodeSymbolicName + ", '"
- + descriptionBuffer.toString() + "')");
- c.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(50, "Got SSH_MSG_CHANNEL_OPEN_FAILURE (channel " + id + ")");
- }
-
- public void msgGlobalRequest(byte[] msg, int msglen) throws IOException
- {
- /* Currently we do not support any kind of global request */
-
- TypesReader tr = new TypesReader(msg, 0, msglen);
-
- tr.readByte(); // skip packet type
- String requestName = tr.readString();
- boolean wantReply = tr.readBoolean();
-
- if (wantReply)
- {
- byte[] reply_failure = new byte[1];
- reply_failure[0] = Packets.SSH_MSG_REQUEST_FAILURE;
-
- tm.sendAsynchronousMessage(reply_failure);
- }
-
- /* We do not clean up the requestName String - that is OK for debug */
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_GLOBAL_REQUEST (" + requestName + ")");
- }
-
- public void msgGlobalSuccess() throws IOException
- {
- synchronized (channels)
- {
- globalSuccessCounter++;
- channels.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_REQUEST_SUCCESS");
- }
-
- public void msgGlobalFailure() throws IOException
- {
- synchronized (channels)
- {
- globalFailedCounter++;
- channels.notifyAll();
- }
-
- if (log.isEnabled())
- log.log(80, "Got SSH_MSG_REQUEST_FAILURE");
- }
-
- public void handleMessage(byte[] msg, int msglen) throws IOException
- {
- if (msg == null)
- {
- if (log.isEnabled())
- log.log(50, "HandleMessage: got shutdown");
-
- synchronized (listenerThreads)
- {
- for (int i = 0; i < listenerThreads.size(); i++)
- {
- IChannelWorkerThread lat = listenerThreads.elementAt(i);
- lat.stopWorking();
- }
- listenerThreadsAllowed = false;
- }
-
- synchronized (channels)
- {
- shutdown = true;
-
- for (int i = 0; i < channels.size(); i++)
- {
- Channel c = channels.elementAt(i);
- synchronized (c)
- {
- c.EOF = true;
- c.state = Channel.STATE_CLOSED;
- c.setReasonClosed("The connection is being shutdown");
- c.closeMessageRecv = true; /*
- * You never know, perhaps
- * we are waiting for a
- * pending close message
- * from the server...
- */
- c.notifyAll();
- }
- }
- /* Works with J2ME */
- channels.setSize(0);
- channels.trimToSize();
- channels.notifyAll(); /* Notify global response waiters */
- return;
- }
- }
-
- switch (msg[0])
- {
- case Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION:
- msgChannelOpenConfirmation(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST:
- msgChannelWindowAdjust(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_DATA:
- msgChannelData(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_EXTENDED_DATA:
- msgChannelExtendedData(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_REQUEST:
- msgChannelRequest(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_EOF:
- msgChannelEOF(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_OPEN:
- msgChannelOpen(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_CLOSE:
- msgChannelClose(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_SUCCESS:
- msgChannelSuccess(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_FAILURE:
- msgChannelFailure(msg, msglen);
- break;
- case Packets.SSH_MSG_CHANNEL_OPEN_FAILURE:
- msgChannelOpenFailure(msg, msglen);
- break;
- case Packets.SSH_MSG_GLOBAL_REQUEST:
- msgGlobalRequest(msg, msglen);
- break;
- case Packets.SSH_MSG_REQUEST_SUCCESS:
- msgGlobalSuccess();
- break;
- case Packets.SSH_MSG_REQUEST_FAILURE:
- msgGlobalFailure();
- break;
- default:
- throw new IOException("Cannot handle unknown channel message " + (msg[0] & 0xff));
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.util.HashMap; +import java.util.Vector; + +import com.trilead.ssh2.AuthAgentCallback; +import com.trilead.ssh2.ChannelCondition; +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.PacketChannelAuthAgentReq; +import com.trilead.ssh2.packets.PacketChannelOpenConfirmation; +import com.trilead.ssh2.packets.PacketChannelOpenFailure; +import com.trilead.ssh2.packets.PacketChannelTrileadPing; +import com.trilead.ssh2.packets.PacketGlobalCancelForwardRequest; +import com.trilead.ssh2.packets.PacketGlobalForwardRequest; +import com.trilead.ssh2.packets.PacketGlobalTrileadPing; +import com.trilead.ssh2.packets.PacketOpenDirectTCPIPChannel; +import com.trilead.ssh2.packets.PacketOpenSessionChannel; +import com.trilead.ssh2.packets.PacketSessionExecCommand; +import com.trilead.ssh2.packets.PacketSessionPtyRequest; +import com.trilead.ssh2.packets.PacketSessionPtyResize; +import com.trilead.ssh2.packets.PacketSessionStartShell; +import com.trilead.ssh2.packets.PacketSessionSubsystemRequest; +import com.trilead.ssh2.packets.PacketSessionX11Request; +import com.trilead.ssh2.packets.Packets; +import com.trilead.ssh2.packets.TypesReader; +import com.trilead.ssh2.transport.MessageHandler; +import com.trilead.ssh2.transport.TransportManager; + +/** + * ChannelManager. Please read the comments in Channel.java. + * <p> + * Besides the crypto part, this is the core of the library. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ChannelManager.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $ + */ +public class ChannelManager implements MessageHandler +{ + private static final Logger log = Logger.getLogger(ChannelManager.class); + + private HashMap<String, X11ServerData> x11_magic_cookies = new HashMap<String, X11ServerData>(); + + private TransportManager tm; + + private Vector<Channel> channels = new Vector<Channel>(); + private int nextLocalChannel = 100; + private boolean shutdown = false; + private int globalSuccessCounter = 0; + private int globalFailedCounter = 0; + + private HashMap<Integer, RemoteForwardingData> remoteForwardings = new HashMap<Integer, RemoteForwardingData>(); + + private AuthAgentCallback authAgent; + + private Vector<IChannelWorkerThread> listenerThreads = new Vector<IChannelWorkerThread>(); + + private boolean listenerThreadsAllowed = true; + + public ChannelManager(TransportManager tm) + { + this.tm = tm; + tm.registerMessageHandler(this, 80, 100); + } + + private Channel getChannel(int id) + { + synchronized (channels) + { + for (int i = 0; i < channels.size(); i++) + { + Channel c = channels.elementAt(i); + if (c.localID == id) + return c; + } + } + return null; + } + + private void removeChannel(int id) + { + synchronized (channels) + { + for (int i = 0; i < channels.size(); i++) + { + Channel c = channels.elementAt(i); + if (c.localID == id) + { + channels.removeElementAt(i); + break; + } + } + } + } + + private int addChannel(Channel c) + { + synchronized (channels) + { + channels.addElement(c); + return nextLocalChannel++; + } + } + + private void waitUntilChannelOpen(Channel c) throws IOException + { + synchronized (c) + { + while (c.state == Channel.STATE_OPENING) + { + try + { + c.wait(); + } + catch (InterruptedException ignore) + { + } + } + + if (c.state != Channel.STATE_OPEN) + { + removeChannel(c.localID); + + String detail = c.getReasonClosed(); + + if (detail == null) + detail = "state: " + c.state; + + throw new IOException("Could not open channel (" + detail + ")"); + } + } + } + + private final boolean waitForGlobalRequestResult() throws IOException + { + synchronized (channels) + { + while ((globalSuccessCounter == 0) && (globalFailedCounter == 0)) + { + if (shutdown) + { + throw new IOException("The connection is being shutdown"); + } + + try + { + channels.wait(); + } + catch (InterruptedException ignore) + { + } + } + + if ((globalFailedCounter == 0) && (globalSuccessCounter == 1)) + return true; + + if ((globalFailedCounter == 1) && (globalSuccessCounter == 0)) + return false; + + throw new IOException("Illegal state. The server sent " + globalSuccessCounter + + " SSH_MSG_REQUEST_SUCCESS and " + globalFailedCounter + " SSH_MSG_REQUEST_FAILURE messages."); + } + } + + private final boolean waitForChannelRequestResult(Channel c) throws IOException + { + synchronized (c) + { + while ((c.successCounter == 0) && (c.failedCounter == 0)) + { + if (c.state != Channel.STATE_OPEN) + { + String detail = c.getReasonClosed(); + + if (detail == null) + detail = "state: " + c.state; + + throw new IOException("This SSH2 channel is not open (" + detail + ")"); + } + + try + { + c.wait(); + } + catch (InterruptedException ignore) + { + } + } + + if ((c.failedCounter == 0) && (c.successCounter == 1)) + return true; + + if ((c.failedCounter == 1) && (c.successCounter == 0)) + return false; + + throw new IOException("Illegal state. The server sent " + c.successCounter + + " SSH_MSG_CHANNEL_SUCCESS and " + c.failedCounter + " SSH_MSG_CHANNEL_FAILURE messages."); + } + } + + public void registerX11Cookie(String hexFakeCookie, X11ServerData data) + { + synchronized (x11_magic_cookies) + { + x11_magic_cookies.put(hexFakeCookie, data); + } + } + + public void unRegisterX11Cookie(String hexFakeCookie, boolean killChannels) + { + if (hexFakeCookie == null) + throw new IllegalStateException("hexFakeCookie may not be null"); + + synchronized (x11_magic_cookies) + { + x11_magic_cookies.remove(hexFakeCookie); + } + + if (killChannels == false) + return; + + if (log.isEnabled()) + log.log(50, "Closing all X11 channels for the given fake cookie"); + + Vector<Channel> channel_copy; + + synchronized (channels) + { + channel_copy = (Vector<Channel>) channels.clone(); + } + + for (int i = 0; i < channel_copy.size(); i++) + { + Channel c = channel_copy.elementAt(i); + + synchronized (c) + { + if (hexFakeCookie.equals(c.hexX11FakeCookie) == false) + continue; + } + + try + { + closeChannel(c, "Closing X11 channel since the corresponding session is closing", true); + } + catch (IOException e) + { + } + } + } + + public X11ServerData checkX11Cookie(String hexFakeCookie) + { + synchronized (x11_magic_cookies) + { + if (hexFakeCookie != null) + return x11_magic_cookies.get(hexFakeCookie); + } + return null; + } + + public void closeAllChannels() + { + if (log.isEnabled()) + log.log(50, "Closing all channels"); + + Vector<Channel> channel_copy; + + synchronized (channels) + { + channel_copy = (Vector<Channel>) channels.clone(); + } + + for (int i = 0; i < channel_copy.size(); i++) + { + Channel c = channel_copy.elementAt(i); + try + { + closeChannel(c, "Closing all channels", true); + } + catch (IOException e) + { + } + } + } + + public void closeChannel(Channel c, String reason, boolean force) throws IOException + { + byte msg[] = new byte[5]; + + synchronized (c) + { + if (force) + { + c.state = Channel.STATE_CLOSED; + c.EOF = true; + } + + c.setReasonClosed(reason); + + msg[0] = Packets.SSH_MSG_CHANNEL_CLOSE; + msg[1] = (byte) (c.remoteID >> 24); + msg[2] = (byte) (c.remoteID >> 16); + msg[3] = (byte) (c.remoteID >> 8); + msg[4] = (byte) (c.remoteID); + + c.notifyAll(); + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent == true) + return; + tm.sendMessage(msg); + c.closeMessageSent = true; + } + + if (log.isEnabled()) + log.log(50, "Sent SSH_MSG_CHANNEL_CLOSE (channel " + c.localID + ")"); + } + + public void sendEOF(Channel c) throws IOException + { + byte[] msg = new byte[5]; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + return; + + msg[0] = Packets.SSH_MSG_CHANNEL_EOF; + msg[1] = (byte) (c.remoteID >> 24); + msg[2] = (byte) (c.remoteID >> 16); + msg[3] = (byte) (c.remoteID >> 8); + msg[4] = (byte) (c.remoteID); + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent == true) + return; + tm.sendMessage(msg); + } + + if (log.isEnabled()) + log.log(50, "Sent EOF (Channel " + c.localID + "/" + c.remoteID + ")"); + } + + public void sendOpenConfirmation(Channel c) throws IOException + { + PacketChannelOpenConfirmation pcoc = null; + + synchronized (c) + { + if (c.state != Channel.STATE_OPENING) + return; + + c.state = Channel.STATE_OPEN; + + pcoc = new PacketChannelOpenConfirmation(c.remoteID, c.localID, c.localWindow, c.localMaxPacketSize); + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent == true) + return; + tm.sendMessage(pcoc.getPayload()); + } + } + + public void sendData(Channel c, byte[] buffer, int pos, int len) throws IOException + { + while (len > 0) + { + int thislen = 0; + byte[] msg; + + synchronized (c) + { + while (true) + { + if (c.state == Channel.STATE_CLOSED) + throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")"); + + if (c.state != Channel.STATE_OPEN) + throw new IOException("SSH channel in strange state. (" + c.state + ")"); + + if (c.remoteWindow != 0) + break; + + try + { + c.wait(); + } + catch (InterruptedException ignore) + { + } + } + + /* len > 0, no sign extension can happen when comparing */ + + thislen = (c.remoteWindow >= len) ? len : (int) c.remoteWindow; + + int estimatedMaxDataLen = c.remoteMaxPacketSize - (tm.getPacketOverheadEstimate() + 9); + + /* The worst case scenario =) a true bottleneck */ + + if (estimatedMaxDataLen <= 0) + { + estimatedMaxDataLen = 1; + } + + if (thislen > estimatedMaxDataLen) + thislen = estimatedMaxDataLen; + + c.remoteWindow -= thislen; + + msg = new byte[1 + 8 + thislen]; + + msg[0] = Packets.SSH_MSG_CHANNEL_DATA; + msg[1] = (byte) (c.remoteID >> 24); + msg[2] = (byte) (c.remoteID >> 16); + msg[3] = (byte) (c.remoteID >> 8); + msg[4] = (byte) (c.remoteID); + msg[5] = (byte) (thislen >> 24); + msg[6] = (byte) (thislen >> 16); + msg[7] = (byte) (thislen >> 8); + msg[8] = (byte) (thislen); + + System.arraycopy(buffer, pos, msg, 9, thislen); + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent == true) + throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")"); + + tm.sendMessage(msg); + } + + pos += thislen; + len -= thislen; + } + } + + public int requestGlobalForward(String bindAddress, int bindPort, String targetAddress, int targetPort) + throws IOException + { + RemoteForwardingData rfd = new RemoteForwardingData(); + + rfd.bindAddress = bindAddress; + rfd.bindPort = bindPort; + rfd.targetAddress = targetAddress; + rfd.targetPort = targetPort; + + synchronized (remoteForwardings) + { + Integer key = Integer.valueOf(bindPort); + + if (remoteForwardings.get(key) != null) + { + throw new IOException("There is already a forwarding for remote port " + bindPort); + } + + remoteForwardings.put(key, rfd); + } + + synchronized (channels) + { + globalSuccessCounter = globalFailedCounter = 0; + } + + PacketGlobalForwardRequest pgf = new PacketGlobalForwardRequest(true, bindAddress, bindPort); + tm.sendMessage(pgf.getPayload()); + + if (log.isEnabled()) + log.log(50, "Requesting a remote forwarding ('" + bindAddress + "', " + bindPort + ")"); + + try + { + if (waitForGlobalRequestResult() == false) + throw new IOException("The server denied the request (did you enable port forwarding?)"); + } + catch (IOException e) + { + synchronized (remoteForwardings) + { + remoteForwardings.remove(rfd); + } + throw e; + } + + return bindPort; + } + + public void requestCancelGlobalForward(int bindPort) throws IOException + { + RemoteForwardingData rfd = null; + + synchronized (remoteForwardings) + { + rfd = remoteForwardings.get(Integer.valueOf(bindPort)); + + if (rfd == null) + throw new IOException("Sorry, there is no known remote forwarding for remote port " + bindPort); + } + + synchronized (channels) + { + globalSuccessCounter = globalFailedCounter = 0; + } + + PacketGlobalCancelForwardRequest pgcf = new PacketGlobalCancelForwardRequest(true, rfd.bindAddress, + rfd.bindPort); + tm.sendMessage(pgcf.getPayload()); + + if (log.isEnabled()) + log.log(50, "Requesting cancelation of remote forward ('" + rfd.bindAddress + "', " + rfd.bindPort + ")"); + + try + { + if (waitForGlobalRequestResult() == false) + throw new IOException("The server denied the request."); + } + finally + { + synchronized (remoteForwardings) + { + /* Only now we are sure that no more forwarded connections will arrive */ + remoteForwardings.remove(rfd); + } + } + + } + + /** + * @param agent + * @throws IOException + */ + public boolean requestChannelAgentForwarding(Channel c, AuthAgentCallback authAgent) throws IOException { + synchronized (this) + { + if (this.authAgent != null) + throw new IllegalStateException("Auth agent already exists"); + + this.authAgent = authAgent; + } + + synchronized (channels) + { + globalSuccessCounter = globalFailedCounter = 0; + } + + if (log.isEnabled()) + log.log(50, "Requesting agent forwarding"); + + PacketChannelAuthAgentReq aar = new PacketChannelAuthAgentReq(c.remoteID); + tm.sendMessage(aar.getPayload()); + + if (waitForChannelRequestResult(c) == false) { + authAgent = null; + return false; + } + + return true; + } + + public void registerThread(IChannelWorkerThread thr) throws IOException + { + synchronized (listenerThreads) + { + if (listenerThreadsAllowed == false) + throw new IOException("Too late, this connection is closed."); + listenerThreads.addElement(thr); + } + } + + public Channel openDirectTCPIPChannel(String host_to_connect, int port_to_connect, String originator_IP_address, + int originator_port) throws IOException + { + Channel c = new Channel(this); + + synchronized (c) + { + c.localID = addChannel(c); + // end of synchronized block forces writing out to main memory + } + + PacketOpenDirectTCPIPChannel dtc = new PacketOpenDirectTCPIPChannel(c.localID, c.localWindow, + c.localMaxPacketSize, host_to_connect, port_to_connect, originator_IP_address, originator_port); + + tm.sendMessage(dtc.getPayload()); + + waitUntilChannelOpen(c); + + return c; + } + + public Channel openSessionChannel() throws IOException + { + Channel c = new Channel(this); + + synchronized (c) + { + c.localID = addChannel(c); + // end of synchronized block forces the writing out to main memory + } + + if (log.isEnabled()) + log.log(50, "Sending SSH_MSG_CHANNEL_OPEN (Channel " + c.localID + ")"); + + PacketOpenSessionChannel smo = new PacketOpenSessionChannel(c.localID, c.localWindow, c.localMaxPacketSize); + tm.sendMessage(smo.getPayload()); + + waitUntilChannelOpen(c); + + return c; + } + + public void requestGlobalTrileadPing() throws IOException + { + synchronized (channels) + { + globalSuccessCounter = globalFailedCounter = 0; + } + + PacketGlobalTrileadPing pgtp = new PacketGlobalTrileadPing(); + + tm.sendMessage(pgtp.getPayload()); + + if (log.isEnabled()) + log.log(50, "Sending SSH_MSG_GLOBAL_REQUEST 'trilead-ping'."); + + try + { + if (waitForGlobalRequestResult() == true) + throw new IOException("Your server is alive - but buggy. " + + "It replied with SSH_MSG_REQUEST_SUCCESS when it actually should not."); + + } + catch (IOException e) + { + throw (IOException) new IOException("The ping request failed.").initCause(e); + } + } + + public void requestChannelTrileadPing(Channel c) throws IOException + { + PacketChannelTrileadPing pctp; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")"); + + pctp = new PacketChannelTrileadPing(c.remoteID); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(pctp.getPayload()); + } + + try + { + if (waitForChannelRequestResult(c) == true) + throw new IOException("Your server is alive - but buggy. " + + "It replied with SSH_MSG_SESSION_SUCCESS when it actually should not."); + + } + catch (IOException e) + { + throw (IOException) new IOException("The ping request failed.").initCause(e); + } + } + + public void requestPTY(Channel c, String term, int term_width_characters, int term_height_characters, + int term_width_pixels, int term_height_pixels, byte[] terminal_modes) throws IOException + { + PacketSessionPtyRequest spr; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")"); + + spr = new PacketSessionPtyRequest(c.remoteID, true, term, term_width_characters, term_height_characters, + term_width_pixels, term_height_pixels, terminal_modes); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(spr.getPayload()); + } + + try + { + if (waitForChannelRequestResult(c) == false) + throw new IOException("The server denied the request."); + } + catch (IOException e) + { + throw (IOException) new IOException("PTY request failed").initCause(e); + } + } + + + public void resizePTY(Channel c, int term_width_characters, int term_height_characters, + int term_width_pixels, int term_height_pixels) throws IOException { + PacketSessionPtyResize spr; + + synchronized (c) { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot request PTY on this channel (" + + c.getReasonClosed() + ")"); + + spr = new PacketSessionPtyResize(c.remoteID, term_width_characters, term_height_characters, + term_width_pixels, term_height_pixels); + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) { + if (c.closeMessageSent) + throw new IOException("Cannot request PTY on this channel (" + + c.getReasonClosed() + ")"); + tm.sendMessage(spr.getPayload()); + } + } + + + public void requestX11(Channel c, boolean singleConnection, String x11AuthenticationProtocol, + String x11AuthenticationCookie, int x11ScreenNumber) throws IOException + { + PacketSessionX11Request psr; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")"); + + psr = new PacketSessionX11Request(c.remoteID, true, singleConnection, x11AuthenticationProtocol, + x11AuthenticationCookie, x11ScreenNumber); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(psr.getPayload()); + } + + if (log.isEnabled()) + log.log(50, "Requesting X11 forwarding (Channel " + c.localID + "/" + c.remoteID + ")"); + + try + { + if (waitForChannelRequestResult(c) == false) + throw new IOException("The server denied the request."); + } + catch (IOException e) + { + throw (IOException) new IOException("The X11 request failed.").initCause(e); + } + } + + public void requestSubSystem(Channel c, String subSystemName) throws IOException + { + PacketSessionSubsystemRequest ssr; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")"); + + ssr = new PacketSessionSubsystemRequest(c.remoteID, true, subSystemName); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(ssr.getPayload()); + } + + try + { + if (waitForChannelRequestResult(c) == false) + throw new IOException("The server denied the request."); + } + catch (IOException e) + { + throw (IOException) new IOException("The subsystem request failed.").initCause(e); + } + } + + public void requestExecCommand(Channel c, String cmd) throws IOException + { + PacketSessionExecCommand sm; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")"); + + sm = new PacketSessionExecCommand(c.remoteID, true, cmd); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(sm.getPayload()); + } + + if (log.isEnabled()) + log.log(50, "Executing command (channel " + c.localID + ", '" + cmd + "')"); + + try + { + if (waitForChannelRequestResult(c) == false) + throw new IOException("The server denied the request."); + } + catch (IOException e) + { + throw (IOException) new IOException("The execute request failed.").initCause(e); + } + } + + public void requestShell(Channel c) throws IOException + { + PacketSessionStartShell sm; + + synchronized (c) + { + if (c.state != Channel.STATE_OPEN) + throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")"); + + sm = new PacketSessionStartShell(c.remoteID, true); + + c.successCounter = c.failedCounter = 0; + } + + synchronized (c.channelSendLock) + { + if (c.closeMessageSent) + throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")"); + tm.sendMessage(sm.getPayload()); + } + + try + { + if (waitForChannelRequestResult(c) == false) + throw new IOException("The server denied the request."); + } + catch (IOException e) + { + throw (IOException) new IOException("The shell request failed.").initCause(e); + } + } + + public void msgChannelExtendedData(byte[] msg, int msglen) throws IOException + { + if (msglen <= 13) + throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + int dataType = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff); + int len = ((msg[9] & 0xff) << 24) | ((msg[10] & 0xff) << 16) | ((msg[11] & 0xff) << 8) | (msg[12] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_EXTENDED_DATA message for non-existent channel " + id); + + if (dataType != Packets.SSH_EXTENDED_DATA_STDERR) + throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has unknown type (" + dataType + ")"); + + if (len != (msglen - 13)) + throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong len (calculated " + (msglen - 13) + + ", got " + len + ")"); + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_CHANNEL_EXTENDED_DATA (channel " + id + ", " + len + ")"); + + synchronized (c) + { + if (c.state == Channel.STATE_CLOSED) + return; // ignore + + if (c.state != Channel.STATE_OPEN) + throw new IOException("Got SSH_MSG_CHANNEL_EXTENDED_DATA, but channel is not in correct state (" + + c.state + ")"); + + if (c.localWindow < len) + throw new IOException("Remote sent too much data, does not fit into window."); + + c.localWindow -= len; + + System.arraycopy(msg, 13, c.stderrBuffer, c.stderrWritepos, len); + c.stderrWritepos += len; + + c.notifyAll(); + } + } + + /** + * Wait until for a condition. + * + * @param c + * Channel + * @param timeout + * in ms, 0 means no timeout. + * @param condition_mask + * minimum event mask + * @return all current events + * + */ + public int waitForCondition(Channel c, long timeout, int condition_mask) + { + long end_time = 0; + boolean end_time_set = false; + + synchronized (c) + { + while (true) + { + int current_cond = 0; + + int stdoutAvail = c.stdoutWritepos - c.stdoutReadpos; + int stderrAvail = c.stderrWritepos - c.stderrReadpos; + + if (stdoutAvail > 0) + current_cond = current_cond | ChannelCondition.STDOUT_DATA; + + if (stderrAvail > 0) + current_cond = current_cond | ChannelCondition.STDERR_DATA; + + if (c.EOF) + current_cond = current_cond | ChannelCondition.EOF; + + if (c.getExitStatus() != null) + current_cond = current_cond | ChannelCondition.EXIT_STATUS; + + if (c.getExitSignal() != null) + current_cond = current_cond | ChannelCondition.EXIT_SIGNAL; + + if (c.state == Channel.STATE_CLOSED) + return current_cond | ChannelCondition.CLOSED | ChannelCondition.EOF; + + if ((current_cond & condition_mask) != 0) + return current_cond; + + if (timeout > 0) + { + if (!end_time_set) + { + end_time = System.currentTimeMillis() + timeout; + end_time_set = true; + } + else + { + timeout = end_time - System.currentTimeMillis(); + + if (timeout <= 0) + return current_cond | ChannelCondition.TIMEOUT; + } + } + + try + { + if (timeout > 0) + c.wait(timeout); + else + c.wait(); + } + catch (InterruptedException e) + { + } + } + } + } + + public int getAvailable(Channel c, boolean extended) throws IOException + { + synchronized (c) + { + int avail; + + if (extended) + avail = c.stderrWritepos - c.stderrReadpos; + else + avail = c.stdoutWritepos - c.stdoutReadpos; + + return ((avail > 0) ? avail : (c.EOF ? -1 : 0)); + } + } + + public int getChannelData(Channel c, boolean extended, byte[] target, int off, int len) throws IOException + { + int copylen = 0; + int increment = 0; + int remoteID = 0; + int localID = 0; + + synchronized (c) + { + int stdoutAvail = 0; + int stderrAvail = 0; + + while (true) + { + /* + * Data available? We have to return remaining data even if the + * channel is already closed. + */ + + stdoutAvail = c.stdoutWritepos - c.stdoutReadpos; + stderrAvail = c.stderrWritepos - c.stderrReadpos; + + if ((!extended) && (stdoutAvail != 0)) + break; + + if ((extended) && (stderrAvail != 0)) + break; + + /* Do not wait if more data will never arrive (EOF or CLOSED) */ + + if ((c.EOF) || (c.state != Channel.STATE_OPEN)) + return -1; + + try + { + c.wait(); + } + catch (InterruptedException ignore) + { + } + } + + /* OK, there is some data. Return it. */ + + if (!extended) + { + copylen = (stdoutAvail > len) ? len : stdoutAvail; + System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, target, off, copylen); + c.stdoutReadpos += copylen; + + if (c.stdoutReadpos != c.stdoutWritepos) + + System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, c.stdoutBuffer, 0, c.stdoutWritepos + - c.stdoutReadpos); + + c.stdoutWritepos -= c.stdoutReadpos; + c.stdoutReadpos = 0; + } + else + { + copylen = (stderrAvail > len) ? len : stderrAvail; + System.arraycopy(c.stderrBuffer, c.stderrReadpos, target, off, copylen); + c.stderrReadpos += copylen; + + if (c.stderrReadpos != c.stderrWritepos) + + System.arraycopy(c.stderrBuffer, c.stderrReadpos, c.stderrBuffer, 0, c.stderrWritepos + - c.stderrReadpos); + + c.stderrWritepos -= c.stderrReadpos; + c.stderrReadpos = 0; + } + + if (c.state != Channel.STATE_OPEN) + return copylen; + + if (c.localWindow < ((Channel.CHANNEL_BUFFER_SIZE + 1) / 2)) + { + int minFreeSpace = Math.min(Channel.CHANNEL_BUFFER_SIZE - c.stdoutWritepos, Channel.CHANNEL_BUFFER_SIZE + - c.stderrWritepos); + + increment = minFreeSpace - c.localWindow; + c.localWindow = minFreeSpace; + } + + remoteID = c.remoteID; /* read while holding the lock */ + localID = c.localID; /* read while holding the lock */ + } + + /* + * If a consumer reads stdout and stdin in parallel, we may end up with + * sending two msgWindowAdjust messages. Luckily, it + * does not matter in which order they arrive at the server. + */ + + if (increment > 0) + { + if (log.isEnabled()) + log.log(80, "Sending SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + localID + ", " + increment + ")"); + + synchronized (c.channelSendLock) + { + byte[] msg = c.msgWindowAdjust; + + msg[0] = Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST; + msg[1] = (byte) (remoteID >> 24); + msg[2] = (byte) (remoteID >> 16); + msg[3] = (byte) (remoteID >> 8); + msg[4] = (byte) (remoteID); + msg[5] = (byte) (increment >> 24); + msg[6] = (byte) (increment >> 16); + msg[7] = (byte) (increment >> 8); + msg[8] = (byte) (increment); + + if (c.closeMessageSent == false) + tm.sendMessage(msg); + } + } + + return copylen; + } + + public void msgChannelData(byte[] msg, int msglen) throws IOException + { + if (msglen <= 9) + throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + int len = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_DATA message for non-existent channel " + id); + + if (len != (msglen - 9)) + throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong len (calculated " + (msglen - 9) + ", got " + + len + ")"); + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_CHANNEL_DATA (channel " + id + ", " + len + ")"); + + synchronized (c) + { + if (c.state == Channel.STATE_CLOSED) + return; // ignore + + if (c.state != Channel.STATE_OPEN) + throw new IOException("Got SSH_MSG_CHANNEL_DATA, but channel is not in correct state (" + c.state + ")"); + + if (c.localWindow < len) + throw new IOException("Remote sent too much data, does not fit into window."); + + c.localWindow -= len; + + System.arraycopy(msg, 9, c.stdoutBuffer, c.stdoutWritepos, len); + c.stdoutWritepos += len; + + c.notifyAll(); + } + } + + public void msgChannelWindowAdjust(byte[] msg, int msglen) throws IOException + { + if (msglen != 9) + throw new IOException("SSH_MSG_CHANNEL_WINDOW_ADJUST message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + int windowChange = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_WINDOW_ADJUST message for non-existent channel " + id); + + synchronized (c) + { + final long huge = 0xFFFFffffL; /* 2^32 - 1 */ + + c.remoteWindow += (windowChange & huge); /* avoid sign extension */ + + /* TODO - is this a good heuristic? */ + + if ((c.remoteWindow > huge)) + c.remoteWindow = huge; + + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + id + ", " + windowChange + ")"); + } + + public void msgChannelOpen(byte[] msg, int msglen) throws IOException + { + TypesReader tr = new TypesReader(msg, 0, msglen); + + tr.readByte(); // skip packet type + String channelType = tr.readString(); + int remoteID = tr.readUINT32(); /* sender channel */ + int remoteWindow = tr.readUINT32(); /* initial window size */ + int remoteMaxPacketSize = tr.readUINT32(); /* maximum packet size */ + + if ("x11".equals(channelType)) + { + synchronized (x11_magic_cookies) + { + /* If we did not request X11 forwarding, then simply ignore this bogus request. */ + + if (x11_magic_cookies.size() == 0) + { + PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID, + Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, "X11 forwarding not activated", ""); + + tm.sendAsynchronousMessage(pcof.getPayload()); + + if (log.isEnabled()) + log.log(20, "Unexpected X11 request, denying it!"); + + return; + } + } + + String remoteOriginatorAddress = tr.readString(); + int remoteOriginatorPort = tr.readUINT32(); + + Channel c = new Channel(this); + + synchronized (c) + { + c.remoteID = remoteID; + c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */ + c.remoteMaxPacketSize = remoteMaxPacketSize; + c.localID = addChannel(c); + } + + /* + * The open confirmation message will be sent from another thread + */ + + RemoteX11AcceptThread rxat = new RemoteX11AcceptThread(c, remoteOriginatorAddress, remoteOriginatorPort); + rxat.setDaemon(true); + rxat.start(); + + return; + } + + if ("forwarded-tcpip".equals(channelType)) + { + String remoteConnectedAddress = tr.readString(); /* address that was connected */ + int remoteConnectedPort = tr.readUINT32(); /* port that was connected */ + String remoteOriginatorAddress = tr.readString(); /* originator IP address */ + int remoteOriginatorPort = tr.readUINT32(); /* originator port */ + + RemoteForwardingData rfd = null; + + synchronized (remoteForwardings) + { + rfd = remoteForwardings.get(Integer.valueOf(remoteConnectedPort)); + } + + if (rfd == null) + { + PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID, + Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, + "No thanks, unknown port in forwarded-tcpip request", ""); + + /* Always try to be polite. */ + + tm.sendAsynchronousMessage(pcof.getPayload()); + + if (log.isEnabled()) + log.log(20, "Unexpected forwarded-tcpip request, denying it!"); + + return; + } + + Channel c = new Channel(this); + + synchronized (c) + { + c.remoteID = remoteID; + c.remoteWindow = remoteWindow & 0xFFFFffffL; /* convert UINT32 to long */ + c.remoteMaxPacketSize = remoteMaxPacketSize; + c.localID = addChannel(c); + } + + /* + * The open confirmation message will be sent from another thread. + */ + + RemoteAcceptThread rat = new RemoteAcceptThread(c, remoteConnectedAddress, remoteConnectedPort, + remoteOriginatorAddress, remoteOriginatorPort, rfd.targetAddress, rfd.targetPort); + + rat.setDaemon(true); + rat.start(); + + return; + } + + if ("auth-agent@openssh.com".equals(channelType)) { + Channel c = new Channel(this); + + synchronized (c) + { + c.remoteID = remoteID; + c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */ + c.remoteMaxPacketSize = remoteMaxPacketSize; + c.localID = addChannel(c); + } + + AuthAgentForwardThread aat = new AuthAgentForwardThread(c, authAgent); + + aat.setDaemon(true); + aat.start(); + + return; + } + + /* Tell the server that we have no idea what it is talking about */ + + PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID, Packets.SSH_OPEN_UNKNOWN_CHANNEL_TYPE, + "Unknown channel type", ""); + + tm.sendAsynchronousMessage(pcof.getPayload()); + + if (log.isEnabled()) + log.log(20, "The peer tried to open an unsupported channel type (" + channelType + ")"); + } + + public void msgChannelRequest(byte[] msg, int msglen) throws IOException + { + TypesReader tr = new TypesReader(msg, 0, msglen); + + tr.readByte(); // skip packet type + int id = tr.readUINT32(); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_REQUEST message for non-existent channel " + id); + + String type = tr.readString("US-ASCII"); + boolean wantReply = tr.readBoolean(); + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_CHANNEL_REQUEST (channel " + id + ", '" + type + "')"); + + if (type.equals("exit-status")) + { + if (wantReply != false) + throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true"); + + int exit_status = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message"); + + synchronized (c) + { + c.exit_status = Integer.valueOf(exit_status); + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got EXIT STATUS (channel " + id + ", status " + exit_status + ")"); + + return; + } + + if (type.equals("exit-signal")) + { + if (wantReply != false) + throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true"); + + String signame = tr.readString("US-ASCII"); + tr.readBoolean(); + tr.readString(); + tr.readString(); + + if (tr.remain() != 0) + throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message"); + + synchronized (c) + { + c.exit_signal = signame; + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got EXIT SIGNAL (channel " + id + ", signal " + signame + ")"); + + return; + } + + /* We simply ignore unknown channel requests, however, if the server wants a reply, + * then we signal that we have no idea what it is about. + */ + + if (wantReply) + { + byte[] reply = new byte[5]; + + reply[0] = Packets.SSH_MSG_CHANNEL_FAILURE; + reply[1] = (byte) (c.remoteID >> 24); + reply[2] = (byte) (c.remoteID >> 16); + reply[3] = (byte) (c.remoteID >> 8); + reply[4] = (byte) (c.remoteID); + + tm.sendAsynchronousMessage(reply); + } + + if (log.isEnabled()) + log.log(50, "Channel request '" + type + "' is not known, ignoring it"); + } + + public void msgChannelEOF(byte[] msg, int msglen) throws IOException + { + if (msglen != 5) + throw new IOException("SSH_MSG_CHANNEL_EOF message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_EOF message for non-existent channel " + id); + + synchronized (c) + { + c.EOF = true; + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got SSH_MSG_CHANNEL_EOF (channel " + id + ")"); + } + + public void msgChannelClose(byte[] msg, int msglen) throws IOException + { + if (msglen != 5) + throw new IOException("SSH_MSG_CHANNEL_CLOSE message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_CLOSE message for non-existent channel " + id); + + synchronized (c) + { + c.EOF = true; + c.state = Channel.STATE_CLOSED; + c.setReasonClosed("Close requested by remote"); + c.closeMessageRecv = true; + + removeChannel(c.localID); + + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got SSH_MSG_CHANNEL_CLOSE (channel " + id + ")"); + } + + public void msgChannelSuccess(byte[] msg, int msglen) throws IOException + { + if (msglen != 5) + throw new IOException("SSH_MSG_CHANNEL_SUCCESS message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_SUCCESS message for non-existent channel " + id); + + synchronized (c) + { + c.successCounter++; + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_CHANNEL_SUCCESS (channel " + id + ")"); + } + + public void msgChannelFailure(byte[] msg, int msglen) throws IOException + { + if (msglen != 5) + throw new IOException("SSH_MSG_CHANNEL_FAILURE message has wrong size (" + msglen + ")"); + + int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff); + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_FAILURE message for non-existent channel " + id); + + synchronized (c) + { + c.failedCounter++; + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got SSH_MSG_CHANNEL_FAILURE (channel " + id + ")"); + } + + public void msgChannelOpenConfirmation(byte[] msg, int msglen) throws IOException + { + PacketChannelOpenConfirmation sm = new PacketChannelOpenConfirmation(msg, 0, msglen); + + Channel c = getChannel(sm.recipientChannelID); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for non-existent channel " + + sm.recipientChannelID); + + synchronized (c) + { + if (c.state != Channel.STATE_OPENING) + throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for channel " + + sm.recipientChannelID); + + c.remoteID = sm.senderChannelID; + c.remoteWindow = sm.initialWindowSize & 0xFFFFffffL; /* convert UINT32 to long */ + c.remoteMaxPacketSize = sm.maxPacketSize; + c.state = Channel.STATE_OPEN; + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got SSH_MSG_CHANNEL_OPEN_CONFIRMATION (channel " + sm.recipientChannelID + " / remote: " + + sm.senderChannelID + ")"); + } + + public void msgChannelOpenFailure(byte[] msg, int msglen) throws IOException + { + if (msglen < 5) + throw new IOException("SSH_MSG_CHANNEL_OPEN_FAILURE message has wrong size (" + msglen + ")"); + + TypesReader tr = new TypesReader(msg, 0, msglen); + + tr.readByte(); // skip packet type + int id = tr.readUINT32(); /* sender channel */ + + Channel c = getChannel(id); + + if (c == null) + throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_FAILURE message for non-existent channel " + id); + + int reasonCode = tr.readUINT32(); + String description = tr.readString("UTF-8"); + + String reasonCodeSymbolicName = null; + + switch (reasonCode) + { + case 1: + reasonCodeSymbolicName = "SSH_OPEN_ADMINISTRATIVELY_PROHIBITED"; + break; + case 2: + reasonCodeSymbolicName = "SSH_OPEN_CONNECT_FAILED"; + break; + case 3: + reasonCodeSymbolicName = "SSH_OPEN_UNKNOWN_CHANNEL_TYPE"; + break; + case 4: + reasonCodeSymbolicName = "SSH_OPEN_RESOURCE_SHORTAGE"; + break; + default: + reasonCodeSymbolicName = "UNKNOWN REASON CODE (" + reasonCode + ")"; + } + + StringBuffer descriptionBuffer = new StringBuffer(); + descriptionBuffer.append(description); + + for (int i = 0; i < descriptionBuffer.length(); i++) + { + char cc = descriptionBuffer.charAt(i); + + if ((cc >= 32) && (cc <= 126)) + continue; + descriptionBuffer.setCharAt(i, '\uFFFD'); + } + + synchronized (c) + { + c.EOF = true; + c.state = Channel.STATE_CLOSED; + c.setReasonClosed("The server refused to open the channel (" + reasonCodeSymbolicName + ", '" + + descriptionBuffer.toString() + "')"); + c.notifyAll(); + } + + if (log.isEnabled()) + log.log(50, "Got SSH_MSG_CHANNEL_OPEN_FAILURE (channel " + id + ")"); + } + + public void msgGlobalRequest(byte[] msg, int msglen) throws IOException + { + /* Currently we do not support any kind of global request */ + + TypesReader tr = new TypesReader(msg, 0, msglen); + + tr.readByte(); // skip packet type + String requestName = tr.readString(); + boolean wantReply = tr.readBoolean(); + + if (wantReply) + { + byte[] reply_failure = new byte[1]; + reply_failure[0] = Packets.SSH_MSG_REQUEST_FAILURE; + + tm.sendAsynchronousMessage(reply_failure); + } + + /* We do not clean up the requestName String - that is OK for debug */ + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_GLOBAL_REQUEST (" + requestName + ")"); + } + + public void msgGlobalSuccess() throws IOException + { + synchronized (channels) + { + globalSuccessCounter++; + channels.notifyAll(); + } + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_REQUEST_SUCCESS"); + } + + public void msgGlobalFailure() throws IOException + { + synchronized (channels) + { + globalFailedCounter++; + channels.notifyAll(); + } + + if (log.isEnabled()) + log.log(80, "Got SSH_MSG_REQUEST_FAILURE"); + } + + public void handleMessage(byte[] msg, int msglen) throws IOException + { + if (msg == null) + { + if (log.isEnabled()) + log.log(50, "HandleMessage: got shutdown"); + + synchronized (listenerThreads) + { + for (int i = 0; i < listenerThreads.size(); i++) + { + IChannelWorkerThread lat = listenerThreads.elementAt(i); + lat.stopWorking(); + } + listenerThreadsAllowed = false; + } + + synchronized (channels) + { + shutdown = true; + + for (int i = 0; i < channels.size(); i++) + { + Channel c = channels.elementAt(i); + synchronized (c) + { + c.EOF = true; + c.state = Channel.STATE_CLOSED; + c.setReasonClosed("The connection is being shutdown"); + c.closeMessageRecv = true; /* + * You never know, perhaps + * we are waiting for a + * pending close message + * from the server... + */ + c.notifyAll(); + } + } + /* Works with J2ME */ + channels.setSize(0); + channels.trimToSize(); + channels.notifyAll(); /* Notify global response waiters */ + return; + } + } + + switch (msg[0]) + { + case Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION: + msgChannelOpenConfirmation(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST: + msgChannelWindowAdjust(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_DATA: + msgChannelData(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_EXTENDED_DATA: + msgChannelExtendedData(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_REQUEST: + msgChannelRequest(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_EOF: + msgChannelEOF(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_OPEN: + msgChannelOpen(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_CLOSE: + msgChannelClose(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_SUCCESS: + msgChannelSuccess(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_FAILURE: + msgChannelFailure(msg, msglen); + break; + case Packets.SSH_MSG_CHANNEL_OPEN_FAILURE: + msgChannelOpenFailure(msg, msglen); + break; + case Packets.SSH_MSG_GLOBAL_REQUEST: + msgGlobalRequest(msg, msglen); + break; + case Packets.SSH_MSG_REQUEST_SUCCESS: + msgGlobalSuccess(); + break; + case Packets.SSH_MSG_REQUEST_FAILURE: + msgGlobalFailure(); + break; + default: + throw new IOException("Cannot handle unknown channel message " + (msg[0] & 0xff)); + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java b/lib/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java index 30e8fd8..c1d56e8 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java @@ -1,71 +1,71 @@ -package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-/**
- * ChannelOutputStream.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelOutputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public final class ChannelOutputStream extends OutputStream
-{
- Channel c;
-
- private byte[] writeBuffer;
-
- boolean isClosed = false;
-
- ChannelOutputStream(Channel c)
- {
- this.c = c;
- writeBuffer = new byte[1];
- }
-
- public void write(int b) throws IOException
- {
- writeBuffer[0] = (byte) b;
-
- write(writeBuffer, 0, 1);
- }
-
- public void close() throws IOException
- {
- if (isClosed == false)
- {
- isClosed = true;
- c.cm.sendEOF(c);
- }
- }
-
- public void flush() throws IOException
- {
- if (isClosed)
- throw new IOException("This OutputStream is closed.");
-
- /* This is a no-op, since this stream is unbuffered */
- }
-
- public void write(byte[] b, int off, int len) throws IOException
- {
- if (isClosed)
- throw new IOException("This OutputStream is closed.");
-
- if (b == null)
- throw new NullPointerException();
-
- if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
- throw new IndexOutOfBoundsException();
-
- if (len == 0)
- return;
-
- c.cm.sendData(c, b, off, len);
- }
-
- public void write(byte[] b) throws IOException
- {
- write(b, 0, b.length);
- }
-}
+package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.io.OutputStream; + +/** + * ChannelOutputStream. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ChannelOutputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public final class ChannelOutputStream extends OutputStream +{ + Channel c; + + private byte[] writeBuffer; + + boolean isClosed = false; + + ChannelOutputStream(Channel c) + { + this.c = c; + writeBuffer = new byte[1]; + } + + public void write(int b) throws IOException + { + writeBuffer[0] = (byte) b; + + write(writeBuffer, 0, 1); + } + + public void close() throws IOException + { + if (isClosed == false) + { + isClosed = true; + c.cm.sendEOF(c); + } + } + + public void flush() throws IOException + { + if (isClosed) + throw new IOException("This OutputStream is closed."); + + /* This is a no-op, since this stream is unbuffered */ + } + + public void write(byte[] b, int off, int len) throws IOException + { + if (isClosed) + throw new IOException("This OutputStream is closed."); + + if (b == null) + throw new NullPointerException(); + + if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length)) + throw new IndexOutOfBoundsException(); + + if (len == 0) + return; + + c.cm.sendData(c, b, off, len); + } + + public void write(byte[] b) throws IOException + { + write(b, 0, b.length); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java b/lib/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java index c085421..bce9b1b 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java @@ -1,13 +1,13 @@ -
-package com.trilead.ssh2.channel;
-
-/**
- * IChannelWorkerThread.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: IChannelWorkerThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-interface IChannelWorkerThread
-{
- public void stopWorking();
-}
+ +package com.trilead.ssh2.channel; + +/** + * IChannelWorkerThread. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: IChannelWorkerThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +interface IChannelWorkerThread +{ + public void stopWorking(); +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java b/lib/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java index 885b41f..0d1bb35 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java @@ -1,135 +1,135 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.ServerSocket;
-import java.net.Socket;
-
-/**
- * LocalAcceptThread.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalAcceptThread extends Thread implements IChannelWorkerThread
-{
- ChannelManager cm;
- String host_to_connect;
- int port_to_connect;
-
- final ServerSocket ss;
-
- public LocalAcceptThread(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect)
- throws IOException
- {
- this.cm = cm;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
-
- ss = new ServerSocket(local_port);
- }
-
- public LocalAcceptThread(ChannelManager cm, InetSocketAddress localAddress, String host_to_connect,
- int port_to_connect) throws IOException
- {
- this.cm = cm;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
-
- ss = new ServerSocket();
- ss.bind(localAddress);
- }
-
- public void run()
- {
- try
- {
- cm.registerThread(this);
- }
- catch (IOException e)
- {
- stopWorking();
- return;
- }
-
- while (true)
- {
- Socket s = null;
-
- try
- {
- s = ss.accept();
- }
- catch (IOException e)
- {
- stopWorking();
- return;
- }
-
- Channel cn = null;
- StreamForwarder r2l = null;
- StreamForwarder l2r = null;
-
- try
- {
- /* This may fail, e.g., if the remote port is closed (in optimistic terms: not open yet) */
-
- cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, s.getInetAddress().getHostAddress(), s
- .getPort());
-
- }
- catch (IOException e)
- {
- /* Simply close the local socket and wait for the next incoming connection */
-
- try
- {
- s.close();
- }
- catch (IOException ignore)
- {
- }
-
- continue;
- }
-
- try
- {
- r2l = new StreamForwarder(cn, null, s, cn.stdoutStream, s.getOutputStream(), "RemoteToLocal");
- l2r = new StreamForwarder(cn, r2l, s, s.getInputStream(), cn.stdinStream, "LocalToRemote");
- }
- catch (IOException e)
- {
- try
- {
- /* This message is only visible during debugging, since we discard the channel immediatelly */
- cn.cm.closeChannel(cn, "Weird error during creation of StreamForwarder (" + e.getMessage() + ")",
- true);
- }
- catch (IOException ignore)
- {
- }
-
- continue;
- }
-
- r2l.setDaemon(true);
- l2r.setDaemon(true);
- r2l.start();
- l2r.start();
- }
- }
-
- public void stopWorking()
- {
- try
- {
- /* This will lead to an IOException in the ss.accept() call */
- ss.close();
- }
- catch (IOException e)
- {
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.net.InetSocketAddress; +import java.net.ServerSocket; +import java.net.Socket; + +/** + * LocalAcceptThread. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: LocalAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class LocalAcceptThread extends Thread implements IChannelWorkerThread +{ + ChannelManager cm; + String host_to_connect; + int port_to_connect; + + final ServerSocket ss; + + public LocalAcceptThread(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect) + throws IOException + { + this.cm = cm; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + + ss = new ServerSocket(local_port); + } + + public LocalAcceptThread(ChannelManager cm, InetSocketAddress localAddress, String host_to_connect, + int port_to_connect) throws IOException + { + this.cm = cm; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + + ss = new ServerSocket(); + ss.bind(localAddress); + } + + public void run() + { + try + { + cm.registerThread(this); + } + catch (IOException e) + { + stopWorking(); + return; + } + + while (true) + { + Socket s = null; + + try + { + s = ss.accept(); + } + catch (IOException e) + { + stopWorking(); + return; + } + + Channel cn = null; + StreamForwarder r2l = null; + StreamForwarder l2r = null; + + try + { + /* This may fail, e.g., if the remote port is closed (in optimistic terms: not open yet) */ + + cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, s.getInetAddress().getHostAddress(), s + .getPort()); + + } + catch (IOException e) + { + /* Simply close the local socket and wait for the next incoming connection */ + + try + { + s.close(); + } + catch (IOException ignore) + { + } + + continue; + } + + try + { + r2l = new StreamForwarder(cn, null, s, cn.stdoutStream, s.getOutputStream(), "RemoteToLocal"); + l2r = new StreamForwarder(cn, r2l, s, s.getInputStream(), cn.stdinStream, "LocalToRemote"); + } + catch (IOException e) + { + try + { + /* This message is only visible during debugging, since we discard the channel immediatelly */ + cn.cm.closeChannel(cn, "Weird error during creation of StreamForwarder (" + e.getMessage() + ")", + true); + } + catch (IOException ignore) + { + } + + continue; + } + + r2l.setDaemon(true); + l2r.setDaemon(true); + r2l.start(); + l2r.start(); + } + } + + public void stopWorking() + { + try + { + /* This will lead to an IOException in the ss.accept() call */ + ss.close(); + } + catch (IOException e) + { + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java b/lib/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java index 8b97b55..29b02b8 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java @@ -1,103 +1,103 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.net.Socket;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * RemoteAcceptThread.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class RemoteAcceptThread extends Thread
-{
- private static final Logger log = Logger.getLogger(RemoteAcceptThread.class);
-
- Channel c;
-
- String remoteConnectedAddress;
- int remoteConnectedPort;
- String remoteOriginatorAddress;
- int remoteOriginatorPort;
- String targetAddress;
- int targetPort;
-
- Socket s;
-
- public RemoteAcceptThread(Channel c, String remoteConnectedAddress, int remoteConnectedPort,
- String remoteOriginatorAddress, int remoteOriginatorPort, String targetAddress, int targetPort)
- {
- this.c = c;
- this.remoteConnectedAddress = remoteConnectedAddress;
- this.remoteConnectedPort = remoteConnectedPort;
- this.remoteOriginatorAddress = remoteOriginatorAddress;
- this.remoteOriginatorPort = remoteOriginatorPort;
- this.targetAddress = targetAddress;
- this.targetPort = targetPort;
-
- if (log.isEnabled())
- log.log(20, "RemoteAcceptThread: " + remoteConnectedAddress + "/" + remoteConnectedPort + ", R: "
- + remoteOriginatorAddress + "/" + remoteOriginatorPort);
- }
-
- public void run()
- {
- try
- {
- c.cm.sendOpenConfirmation(c);
-
- s = new Socket(targetAddress, targetPort);
-
- StreamForwarder r2l = new StreamForwarder(c, null, s, c.getStdoutStream(), s.getOutputStream(),
- "RemoteToLocal");
- StreamForwarder l2r = new StreamForwarder(c, null, null, s.getInputStream(), c.getStdinStream(),
- "LocalToRemote");
-
- /* No need to start two threads, one can be executed in the current thread */
-
- r2l.setDaemon(true);
- r2l.start();
- l2r.run();
-
- while (r2l.isAlive())
- {
- try
- {
- r2l.join();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- /* If the channel is already closed, then this is a no-op */
-
- c.cm.closeChannel(c, "EOF on both streams reached.", true);
- s.close();
- }
- catch (IOException e)
- {
- log.log(50, "IOException in proxy code: " + e.getMessage());
-
- try
- {
- c.cm.closeChannel(c, "IOException in proxy code (" + e.getMessage() + ")", true);
- }
- catch (IOException e1)
- {
- }
- try
- {
- if (s != null)
- s.close();
- }
- catch (IOException e1)
- {
- }
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.net.Socket; + +import com.trilead.ssh2.log.Logger; + + +/** + * RemoteAcceptThread. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: RemoteAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class RemoteAcceptThread extends Thread +{ + private static final Logger log = Logger.getLogger(RemoteAcceptThread.class); + + Channel c; + + String remoteConnectedAddress; + int remoteConnectedPort; + String remoteOriginatorAddress; + int remoteOriginatorPort; + String targetAddress; + int targetPort; + + Socket s; + + public RemoteAcceptThread(Channel c, String remoteConnectedAddress, int remoteConnectedPort, + String remoteOriginatorAddress, int remoteOriginatorPort, String targetAddress, int targetPort) + { + this.c = c; + this.remoteConnectedAddress = remoteConnectedAddress; + this.remoteConnectedPort = remoteConnectedPort; + this.remoteOriginatorAddress = remoteOriginatorAddress; + this.remoteOriginatorPort = remoteOriginatorPort; + this.targetAddress = targetAddress; + this.targetPort = targetPort; + + if (log.isEnabled()) + log.log(20, "RemoteAcceptThread: " + remoteConnectedAddress + "/" + remoteConnectedPort + ", R: " + + remoteOriginatorAddress + "/" + remoteOriginatorPort); + } + + public void run() + { + try + { + c.cm.sendOpenConfirmation(c); + + s = new Socket(targetAddress, targetPort); + + StreamForwarder r2l = new StreamForwarder(c, null, s, c.getStdoutStream(), s.getOutputStream(), + "RemoteToLocal"); + StreamForwarder l2r = new StreamForwarder(c, null, null, s.getInputStream(), c.getStdinStream(), + "LocalToRemote"); + + /* No need to start two threads, one can be executed in the current thread */ + + r2l.setDaemon(true); + r2l.start(); + l2r.run(); + + while (r2l.isAlive()) + { + try + { + r2l.join(); + } + catch (InterruptedException e) + { + } + } + + /* If the channel is already closed, then this is a no-op */ + + c.cm.closeChannel(c, "EOF on both streams reached.", true); + s.close(); + } + catch (IOException e) + { + log.log(50, "IOException in proxy code: " + e.getMessage()); + + try + { + c.cm.closeChannel(c, "IOException in proxy code (" + e.getMessage() + ")", true); + } + catch (IOException e1) + { + } + try + { + if (s != null) + s.close(); + } + catch (IOException e1) + { + } + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java b/lib/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java index 0bafce2..d05378e 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java @@ -1,17 +1,17 @@ -
-package com.trilead.ssh2.channel;
-
-/**
- * RemoteForwardingData. Data about a requested remote forwarding.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteForwardingData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class RemoteForwardingData
-{
- public String bindAddress;
- public int bindPort;
-
- String targetAddress;
- int targetPort;
-}
+ +package com.trilead.ssh2.channel; + +/** + * RemoteForwardingData. Data about a requested remote forwarding. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: RemoteForwardingData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class RemoteForwardingData +{ + public String bindAddress; + public int bindPort; + + String targetAddress; + int targetPort; +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java b/lib/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java index 34ce51f..9f99410 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java @@ -1,240 +1,240 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.Socket;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * RemoteX11AcceptThread.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteX11AcceptThread.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class RemoteX11AcceptThread extends Thread
-{
- private static final Logger log = Logger.getLogger(RemoteX11AcceptThread.class);
-
- Channel c;
-
- String remoteOriginatorAddress;
- int remoteOriginatorPort;
-
- Socket s;
-
- public RemoteX11AcceptThread(Channel c, String remoteOriginatorAddress, int remoteOriginatorPort)
- {
- this.c = c;
- this.remoteOriginatorAddress = remoteOriginatorAddress;
- this.remoteOriginatorPort = remoteOriginatorPort;
- }
-
- public void run()
- {
- try
- {
- /* Send Open Confirmation */
-
- c.cm.sendOpenConfirmation(c);
-
- /* Read startup packet from client */
-
- OutputStream remote_os = c.getStdinStream();
- InputStream remote_is = c.getStdoutStream();
-
- /* The following code is based on the protocol description given in:
- * Scheifler/Gettys,
- * X Windows System: Core and Extension Protocols:
- * X Version 11, Releases 6 and 6.1 ISBN 1-55558-148-X
- */
-
- /*
- * Client startup:
- *
- * 1 0X42 MSB first/0x6c lSB first - byteorder
- * 1 - unused
- * 2 card16 - protocol-major-version
- * 2 card16 - protocol-minor-version
- * 2 n - lenght of authorization-protocol-name
- * 2 d - lenght of authorization-protocol-data
- * 2 - unused
- * string8 - authorization-protocol-name
- * p - unused, p=pad(n)
- * string8 - authorization-protocol-data
- * q - unused, q=pad(d)
- *
- * pad(X) = (4 - (X mod 4)) mod 4
- *
- * Server response:
- *
- * 1 (0 failed, 2 authenticate, 1 success)
- * ...
- *
- */
-
- /* Later on we will simply forward the first 6 header bytes to the "real" X11 server */
-
- byte[] header = new byte[6];
-
- if (remote_is.read(header) != 6)
- throw new IOException("Unexpected EOF on X11 startup!");
-
- if ((header[0] != 0x42) && (header[0] != 0x6c)) // 0x42 MSB first, 0x6C LSB first
- throw new IOException("Unknown endian format in X11 message!");
-
- /* Yes, I came up with this myself - shall I file an application for a patent? =) */
-
- int idxMSB = (header[0] == 0x42) ? 0 : 1;
-
- /* Read authorization data header */
-
- byte[] auth_buff = new byte[6];
-
- if (remote_is.read(auth_buff) != 6)
- throw new IOException("Unexpected EOF on X11 startup!");
-
- int authProtocolNameLength = ((auth_buff[idxMSB] & 0xff) << 8) | (auth_buff[1 - idxMSB] & 0xff);
- int authProtocolDataLength = ((auth_buff[2 + idxMSB] & 0xff) << 8) | (auth_buff[3 - idxMSB] & 0xff);
-
- if ((authProtocolNameLength > 256) || (authProtocolDataLength > 256))
- throw new IOException("Buggy X11 authorization data");
-
- int authProtocolNamePadding = ((4 - (authProtocolNameLength % 4)) % 4);
- int authProtocolDataPadding = ((4 - (authProtocolDataLength % 4)) % 4);
-
- byte[] authProtocolName = new byte[authProtocolNameLength];
- byte[] authProtocolData = new byte[authProtocolDataLength];
-
- byte[] paddingBuffer = new byte[4];
-
- if (remote_is.read(authProtocolName) != authProtocolNameLength)
- throw new IOException("Unexpected EOF on X11 startup! (authProtocolName)");
-
- if (remote_is.read(paddingBuffer, 0, authProtocolNamePadding) != authProtocolNamePadding)
- throw new IOException("Unexpected EOF on X11 startup! (authProtocolNamePadding)");
-
- if (remote_is.read(authProtocolData) != authProtocolDataLength)
- throw new IOException("Unexpected EOF on X11 startup! (authProtocolData)");
-
- if (remote_is.read(paddingBuffer, 0, authProtocolDataPadding) != authProtocolDataPadding)
- throw new IOException("Unexpected EOF on X11 startup! (authProtocolDataPadding)");
-
- if ("MIT-MAGIC-COOKIE-1".equals(new String(authProtocolName, "ISO-8859-1")) == false)
- throw new IOException("Unknown X11 authorization protocol!");
-
- if (authProtocolDataLength != 16)
- throw new IOException("Wrong data length for X11 authorization data!");
-
- StringBuffer tmp = new StringBuffer(32);
- for (int i = 0; i < authProtocolData.length; i++)
- {
- String digit2 = Integer.toHexString(authProtocolData[i] & 0xff);
- tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2);
- }
- String hexEncodedFakeCookie = tmp.toString();
-
- /* Order is very important here - it may be that a certain x11 forwarding
- * gets disabled right in the moment when we check and register our connection
- * */
-
- synchronized (c)
- {
- /* Please read the comment in Channel.java */
- c.hexX11FakeCookie = hexEncodedFakeCookie;
- }
-
- /* Now check our fake cookie directory to see if we produced this cookie */
-
- X11ServerData sd = c.cm.checkX11Cookie(hexEncodedFakeCookie);
-
- if (sd == null)
- throw new IOException("Invalid X11 cookie received.");
-
- /* If the session which corresponds to this cookie is closed then we will
- * detect this: the session's close code will close all channels
- * with the session's assigned x11 fake cookie.
- */
-
- s = new Socket(sd.hostname, sd.port);
-
- OutputStream x11_os = s.getOutputStream();
- InputStream x11_is = s.getInputStream();
-
- /* Now we are sending the startup packet to the real X11 server */
-
- x11_os.write(header);
-
- if (sd.x11_magic_cookie == null)
- {
- byte[] emptyAuthData = new byte[6];
- /* empty auth data, hopefully you are connecting to localhost =) */
- x11_os.write(emptyAuthData);
- }
- else
- {
- if (sd.x11_magic_cookie.length != 16)
- throw new IOException("The real X11 cookie has an invalid length!");
-
- /* send X11 cookie specified by client */
- x11_os.write(auth_buff);
- x11_os.write(authProtocolName); /* re-use */
- x11_os.write(paddingBuffer, 0, authProtocolNamePadding);
- x11_os.write(sd.x11_magic_cookie);
- x11_os.write(paddingBuffer, 0, authProtocolDataPadding);
- }
-
- x11_os.flush();
-
- /* Start forwarding traffic */
-
- StreamForwarder r2l = new StreamForwarder(c, null, s, remote_is, x11_os, "RemoteToX11");
- StreamForwarder l2r = new StreamForwarder(c, null, null, x11_is, remote_os, "X11ToRemote");
-
- /* No need to start two threads, one can be executed in the current thread */
-
- r2l.setDaemon(true);
- r2l.start();
- l2r.run();
-
- while (r2l.isAlive())
- {
- try
- {
- r2l.join();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- /* If the channel is already closed, then this is a no-op */
-
- c.cm.closeChannel(c, "EOF on both X11 streams reached.", true);
- s.close();
- }
- catch (IOException e)
- {
- log.log(50, "IOException in X11 proxy code: " + e.getMessage());
-
- try
- {
- c.cm.closeChannel(c, "IOException in X11 proxy code (" + e.getMessage() + ")", true);
- }
- catch (IOException e1)
- {
- }
- try
- {
- if (s != null)
- s.close();
- }
- catch (IOException e1)
- {
- }
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.Socket; + +import com.trilead.ssh2.log.Logger; + + +/** + * RemoteX11AcceptThread. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: RemoteX11AcceptThread.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class RemoteX11AcceptThread extends Thread +{ + private static final Logger log = Logger.getLogger(RemoteX11AcceptThread.class); + + Channel c; + + String remoteOriginatorAddress; + int remoteOriginatorPort; + + Socket s; + + public RemoteX11AcceptThread(Channel c, String remoteOriginatorAddress, int remoteOriginatorPort) + { + this.c = c; + this.remoteOriginatorAddress = remoteOriginatorAddress; + this.remoteOriginatorPort = remoteOriginatorPort; + } + + public void run() + { + try + { + /* Send Open Confirmation */ + + c.cm.sendOpenConfirmation(c); + + /* Read startup packet from client */ + + OutputStream remote_os = c.getStdinStream(); + InputStream remote_is = c.getStdoutStream(); + + /* The following code is based on the protocol description given in: + * Scheifler/Gettys, + * X Windows System: Core and Extension Protocols: + * X Version 11, Releases 6 and 6.1 ISBN 1-55558-148-X + */ + + /* + * Client startup: + * + * 1 0X42 MSB first/0x6c lSB first - byteorder + * 1 - unused + * 2 card16 - protocol-major-version + * 2 card16 - protocol-minor-version + * 2 n - lenght of authorization-protocol-name + * 2 d - lenght of authorization-protocol-data + * 2 - unused + * string8 - authorization-protocol-name + * p - unused, p=pad(n) + * string8 - authorization-protocol-data + * q - unused, q=pad(d) + * + * pad(X) = (4 - (X mod 4)) mod 4 + * + * Server response: + * + * 1 (0 failed, 2 authenticate, 1 success) + * ... + * + */ + + /* Later on we will simply forward the first 6 header bytes to the "real" X11 server */ + + byte[] header = new byte[6]; + + if (remote_is.read(header) != 6) + throw new IOException("Unexpected EOF on X11 startup!"); + + if ((header[0] != 0x42) && (header[0] != 0x6c)) // 0x42 MSB first, 0x6C LSB first + throw new IOException("Unknown endian format in X11 message!"); + + /* Yes, I came up with this myself - shall I file an application for a patent? =) */ + + int idxMSB = (header[0] == 0x42) ? 0 : 1; + + /* Read authorization data header */ + + byte[] auth_buff = new byte[6]; + + if (remote_is.read(auth_buff) != 6) + throw new IOException("Unexpected EOF on X11 startup!"); + + int authProtocolNameLength = ((auth_buff[idxMSB] & 0xff) << 8) | (auth_buff[1 - idxMSB] & 0xff); + int authProtocolDataLength = ((auth_buff[2 + idxMSB] & 0xff) << 8) | (auth_buff[3 - idxMSB] & 0xff); + + if ((authProtocolNameLength > 256) || (authProtocolDataLength > 256)) + throw new IOException("Buggy X11 authorization data"); + + int authProtocolNamePadding = ((4 - (authProtocolNameLength % 4)) % 4); + int authProtocolDataPadding = ((4 - (authProtocolDataLength % 4)) % 4); + + byte[] authProtocolName = new byte[authProtocolNameLength]; + byte[] authProtocolData = new byte[authProtocolDataLength]; + + byte[] paddingBuffer = new byte[4]; + + if (remote_is.read(authProtocolName) != authProtocolNameLength) + throw new IOException("Unexpected EOF on X11 startup! (authProtocolName)"); + + if (remote_is.read(paddingBuffer, 0, authProtocolNamePadding) != authProtocolNamePadding) + throw new IOException("Unexpected EOF on X11 startup! (authProtocolNamePadding)"); + + if (remote_is.read(authProtocolData) != authProtocolDataLength) + throw new IOException("Unexpected EOF on X11 startup! (authProtocolData)"); + + if (remote_is.read(paddingBuffer, 0, authProtocolDataPadding) != authProtocolDataPadding) + throw new IOException("Unexpected EOF on X11 startup! (authProtocolDataPadding)"); + + if ("MIT-MAGIC-COOKIE-1".equals(new String(authProtocolName, "ISO-8859-1")) == false) + throw new IOException("Unknown X11 authorization protocol!"); + + if (authProtocolDataLength != 16) + throw new IOException("Wrong data length for X11 authorization data!"); + + StringBuffer tmp = new StringBuffer(32); + for (int i = 0; i < authProtocolData.length; i++) + { + String digit2 = Integer.toHexString(authProtocolData[i] & 0xff); + tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2); + } + String hexEncodedFakeCookie = tmp.toString(); + + /* Order is very important here - it may be that a certain x11 forwarding + * gets disabled right in the moment when we check and register our connection + * */ + + synchronized (c) + { + /* Please read the comment in Channel.java */ + c.hexX11FakeCookie = hexEncodedFakeCookie; + } + + /* Now check our fake cookie directory to see if we produced this cookie */ + + X11ServerData sd = c.cm.checkX11Cookie(hexEncodedFakeCookie); + + if (sd == null) + throw new IOException("Invalid X11 cookie received."); + + /* If the session which corresponds to this cookie is closed then we will + * detect this: the session's close code will close all channels + * with the session's assigned x11 fake cookie. + */ + + s = new Socket(sd.hostname, sd.port); + + OutputStream x11_os = s.getOutputStream(); + InputStream x11_is = s.getInputStream(); + + /* Now we are sending the startup packet to the real X11 server */ + + x11_os.write(header); + + if (sd.x11_magic_cookie == null) + { + byte[] emptyAuthData = new byte[6]; + /* empty auth data, hopefully you are connecting to localhost =) */ + x11_os.write(emptyAuthData); + } + else + { + if (sd.x11_magic_cookie.length != 16) + throw new IOException("The real X11 cookie has an invalid length!"); + + /* send X11 cookie specified by client */ + x11_os.write(auth_buff); + x11_os.write(authProtocolName); /* re-use */ + x11_os.write(paddingBuffer, 0, authProtocolNamePadding); + x11_os.write(sd.x11_magic_cookie); + x11_os.write(paddingBuffer, 0, authProtocolDataPadding); + } + + x11_os.flush(); + + /* Start forwarding traffic */ + + StreamForwarder r2l = new StreamForwarder(c, null, s, remote_is, x11_os, "RemoteToX11"); + StreamForwarder l2r = new StreamForwarder(c, null, null, x11_is, remote_os, "X11ToRemote"); + + /* No need to start two threads, one can be executed in the current thread */ + + r2l.setDaemon(true); + r2l.start(); + l2r.run(); + + while (r2l.isAlive()) + { + try + { + r2l.join(); + } + catch (InterruptedException e) + { + } + } + + /* If the channel is already closed, then this is a no-op */ + + c.cm.closeChannel(c, "EOF on both X11 streams reached.", true); + s.close(); + } + catch (IOException e) + { + log.log(50, "IOException in X11 proxy code: " + e.getMessage()); + + try + { + c.cm.closeChannel(c, "IOException in X11 proxy code (" + e.getMessage() + ")", true); + } + catch (IOException e1) + { + } + try + { + if (s != null) + s.close(); + } + catch (IOException e1) + { + } + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java b/lib/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java index 7e54efb..e1afee8 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java @@ -1,113 +1,113 @@ -
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.Socket;
-
-/**
- * A StreamForwarder forwards data between two given streams.
- * If two StreamForwarder threads are used (one for each direction)
- * then one can be configured to shutdown the underlying channel/socket
- * if both threads have finished forwarding (EOF).
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: StreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class StreamForwarder extends Thread
-{
- final OutputStream os;
- final InputStream is;
- final byte[] buffer = new byte[Channel.CHANNEL_BUFFER_SIZE];
- final Channel c;
- final StreamForwarder sibling;
- final Socket s;
- final String mode;
-
- StreamForwarder(Channel c, StreamForwarder sibling, Socket s, InputStream is, OutputStream os, String mode)
- throws IOException
- {
- this.is = is;
- this.os = os;
- this.mode = mode;
- this.c = c;
- this.sibling = sibling;
- this.s = s;
- }
-
- public void run()
- {
- try
- {
- while (true)
- {
- int len = is.read(buffer);
- if (len <= 0)
- break;
- os.write(buffer, 0, len);
- os.flush();
- }
- }
- catch (IOException ignore)
- {
- try
- {
- c.cm.closeChannel(c, "Closed due to exception in StreamForwarder (" + mode + "): "
- + ignore.getMessage(), true);
- }
- catch (IOException e)
- {
- }
- }
- finally
- {
- try
- {
- os.close();
- }
- catch (IOException e1)
- {
- }
- try
- {
- is.close();
- }
- catch (IOException e2)
- {
- }
-
- if (sibling != null)
- {
- while (sibling.isAlive())
- {
- try
- {
- sibling.join();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- try
- {
- c.cm.closeChannel(c, "StreamForwarder (" + mode + ") is cleaning up the connection", true);
- }
- catch (IOException e3)
- {
- }
- }
-
- if (s != null) {
- try
- {
- s.close();
- }
- catch (IOException e1)
- {
- }
- }
- }
- }
-}
+ +package com.trilead.ssh2.channel; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.Socket; + +/** + * A StreamForwarder forwards data between two given streams. + * If two StreamForwarder threads are used (one for each direction) + * then one can be configured to shutdown the underlying channel/socket + * if both threads have finished forwarding (EOF). + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: StreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class StreamForwarder extends Thread +{ + final OutputStream os; + final InputStream is; + final byte[] buffer = new byte[Channel.CHANNEL_BUFFER_SIZE]; + final Channel c; + final StreamForwarder sibling; + final Socket s; + final String mode; + + StreamForwarder(Channel c, StreamForwarder sibling, Socket s, InputStream is, OutputStream os, String mode) + throws IOException + { + this.is = is; + this.os = os; + this.mode = mode; + this.c = c; + this.sibling = sibling; + this.s = s; + } + + public void run() + { + try + { + while (true) + { + int len = is.read(buffer); + if (len <= 0) + break; + os.write(buffer, 0, len); + os.flush(); + } + } + catch (IOException ignore) + { + try + { + c.cm.closeChannel(c, "Closed due to exception in StreamForwarder (" + mode + "): " + + ignore.getMessage(), true); + } + catch (IOException e) + { + } + } + finally + { + try + { + os.close(); + } + catch (IOException e1) + { + } + try + { + is.close(); + } + catch (IOException e2) + { + } + + if (sibling != null) + { + while (sibling.isAlive()) + { + try + { + sibling.join(); + } + catch (InterruptedException e) + { + } + } + + try + { + c.cm.closeChannel(c, "StreamForwarder (" + mode + ") is cleaning up the connection", true); + } + catch (IOException e3) + { + } + } + + if (s != null) { + try + { + s.close(); + } + catch (IOException e1) + { + } + } + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/channel/X11ServerData.java b/lib/src/main/java/com/trilead/ssh2/channel/X11ServerData.java index 0840376..041f9cb 100644 --- a/lib/src/main/java/com/trilead/ssh2/channel/X11ServerData.java +++ b/lib/src/main/java/com/trilead/ssh2/channel/X11ServerData.java @@ -1,16 +1,16 @@ -
-package com.trilead.ssh2.channel;
-
-/**
- * X11ServerData. Data regarding an x11 forwarding target.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: X11ServerData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- *
- */
-public class X11ServerData
-{
- public String hostname;
- public int port;
- public byte[] x11_magic_cookie; /* not the remote (fake) one, the local (real) one */
-}
+ +package com.trilead.ssh2.channel; + +/** + * X11ServerData. Data regarding an x11 forwarding target. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: X11ServerData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + * + */ +public class X11ServerData +{ + public String hostname; + public int port; + public byte[] x11_magic_cookie; /* not the remote (fake) one, the local (real) one */ +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/Base64.java b/lib/src/main/java/com/trilead/ssh2/crypto/Base64.java index 18a524f..93770ac 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/Base64.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/Base64.java @@ -1,148 +1,148 @@ -
-package com.trilead.ssh2.crypto;
-
-import java.io.CharArrayWriter;
-import java.io.IOException;
-
-/**
- * Basic Base64 Support.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Base64.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class Base64
-{
- static final char[] alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
-
- public static char[] encode(byte[] content)
- {
- CharArrayWriter cw = new CharArrayWriter((4 * content.length) / 3);
-
- int idx = 0;
-
- int x = 0;
-
- for (int i = 0; i < content.length; i++)
- {
- if (idx == 0)
- x = (content[i] & 0xff) << 16;
- else if (idx == 1)
- x = x | ((content[i] & 0xff) << 8);
- else
- x = x | (content[i] & 0xff);
-
- idx++;
-
- if (idx == 3)
- {
- cw.write(alphabet[x >> 18]);
- cw.write(alphabet[(x >> 12) & 0x3f]);
- cw.write(alphabet[(x >> 6) & 0x3f]);
- cw.write(alphabet[x & 0x3f]);
-
- idx = 0;
- }
- }
-
- if (idx == 1)
- {
- cw.write(alphabet[x >> 18]);
- cw.write(alphabet[(x >> 12) & 0x3f]);
- cw.write('=');
- cw.write('=');
- }
-
- if (idx == 2)
- {
- cw.write(alphabet[x >> 18]);
- cw.write(alphabet[(x >> 12) & 0x3f]);
- cw.write(alphabet[(x >> 6) & 0x3f]);
- cw.write('=');
- }
-
- return cw.toCharArray();
- }
-
- public static byte[] decode(char[] message) throws IOException
- {
- byte buff[] = new byte[4];
- byte dest[] = new byte[message.length];
-
- int bpos = 0;
- int destpos = 0;
-
- for (int i = 0; i < message.length; i++)
- {
- int c = message[i];
-
- if ((c == '\n') || (c == '\r') || (c == ' ') || (c == '\t'))
- continue;
-
- if ((c >= 'A') && (c <= 'Z'))
- {
- buff[bpos++] = (byte) (c - 'A');
- }
- else if ((c >= 'a') && (c <= 'z'))
- {
- buff[bpos++] = (byte) ((c - 'a') + 26);
- }
- else if ((c >= '0') && (c <= '9'))
- {
- buff[bpos++] = (byte) ((c - '0') + 52);
- }
- else if (c == '+')
- {
- buff[bpos++] = 62;
- }
- else if (c == '/')
- {
- buff[bpos++] = 63;
- }
- else if (c == '=')
- {
- buff[bpos++] = 64;
- }
- else
- {
- throw new IOException("Illegal char in base64 code.");
- }
-
- if (bpos == 4)
- {
- bpos = 0;
-
- if (buff[0] == 64)
- break;
-
- if (buff[1] == 64)
- throw new IOException("Unexpected '=' in base64 code.");
-
- if (buff[2] == 64)
- {
- int v = (((buff[0] & 0x3f) << 6) | ((buff[1] & 0x3f)));
- dest[destpos++] = (byte) (v >> 4);
- break;
- }
- else if (buff[3] == 64)
- {
- int v = (((buff[0] & 0x3f) << 12) | ((buff[1] & 0x3f) << 6) | ((buff[2] & 0x3f)));
- dest[destpos++] = (byte) (v >> 10);
- dest[destpos++] = (byte) (v >> 2);
- break;
- }
- else
- {
- int v = (((buff[0] & 0x3f) << 18) | ((buff[1] & 0x3f) << 12) | ((buff[2] & 0x3f) << 6) | ((buff[3] & 0x3f)));
- dest[destpos++] = (byte) (v >> 16);
- dest[destpos++] = (byte) (v >> 8);
- dest[destpos++] = (byte) (v);
- }
- }
- }
-
- byte[] res = new byte[destpos];
- System.arraycopy(dest, 0, res, 0, destpos);
-
- return res;
- }
-}
+ +package com.trilead.ssh2.crypto; + +import java.io.CharArrayWriter; +import java.io.IOException; + +/** + * Basic Base64 Support. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Base64.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class Base64 +{ + static final char[] alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray(); + + public static char[] encode(byte[] content) + { + CharArrayWriter cw = new CharArrayWriter((4 * content.length) / 3); + + int idx = 0; + + int x = 0; + + for (int i = 0; i < content.length; i++) + { + if (idx == 0) + x = (content[i] & 0xff) << 16; + else if (idx == 1) + x = x | ((content[i] & 0xff) << 8); + else + x = x | (content[i] & 0xff); + + idx++; + + if (idx == 3) + { + cw.write(alphabet[x >> 18]); + cw.write(alphabet[(x >> 12) & 0x3f]); + cw.write(alphabet[(x >> 6) & 0x3f]); + cw.write(alphabet[x & 0x3f]); + + idx = 0; + } + } + + if (idx == 1) + { + cw.write(alphabet[x >> 18]); + cw.write(alphabet[(x >> 12) & 0x3f]); + cw.write('='); + cw.write('='); + } + + if (idx == 2) + { + cw.write(alphabet[x >> 18]); + cw.write(alphabet[(x >> 12) & 0x3f]); + cw.write(alphabet[(x >> 6) & 0x3f]); + cw.write('='); + } + + return cw.toCharArray(); + } + + public static byte[] decode(char[] message) throws IOException + { + byte buff[] = new byte[4]; + byte dest[] = new byte[message.length]; + + int bpos = 0; + int destpos = 0; + + for (int i = 0; i < message.length; i++) + { + int c = message[i]; + + if ((c == '\n') || (c == '\r') || (c == ' ') || (c == '\t')) + continue; + + if ((c >= 'A') && (c <= 'Z')) + { + buff[bpos++] = (byte) (c - 'A'); + } + else if ((c >= 'a') && (c <= 'z')) + { + buff[bpos++] = (byte) ((c - 'a') + 26); + } + else if ((c >= '0') && (c <= '9')) + { + buff[bpos++] = (byte) ((c - '0') + 52); + } + else if (c == '+') + { + buff[bpos++] = 62; + } + else if (c == '/') + { + buff[bpos++] = 63; + } + else if (c == '=') + { + buff[bpos++] = 64; + } + else + { + throw new IOException("Illegal char in base64 code."); + } + + if (bpos == 4) + { + bpos = 0; + + if (buff[0] == 64) + break; + + if (buff[1] == 64) + throw new IOException("Unexpected '=' in base64 code."); + + if (buff[2] == 64) + { + int v = (((buff[0] & 0x3f) << 6) | ((buff[1] & 0x3f))); + dest[destpos++] = (byte) (v >> 4); + break; + } + else if (buff[3] == 64) + { + int v = (((buff[0] & 0x3f) << 12) | ((buff[1] & 0x3f) << 6) | ((buff[2] & 0x3f))); + dest[destpos++] = (byte) (v >> 10); + dest[destpos++] = (byte) (v >> 2); + break; + } + else + { + int v = (((buff[0] & 0x3f) << 18) | ((buff[1] & 0x3f) << 12) | ((buff[2] & 0x3f) << 6) | ((buff[3] & 0x3f))); + dest[destpos++] = (byte) (v >> 16); + dest[destpos++] = (byte) (v >> 8); + dest[destpos++] = (byte) (v); + } + } + } + + byte[] res = new byte[destpos]; + System.arraycopy(dest, 0, res, 0, destpos); + + return res; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java b/lib/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java index 8fc64e5..86959e7 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java @@ -1,26 +1,26 @@ -
-package com.trilead.ssh2.crypto;
-
-import com.trilead.ssh2.compression.CompressionFactory;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.transport.KexManager;
-
-
-/**
- * CryptoWishList.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CryptoWishList.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class CryptoWishList
-{
- public String[] kexAlgorithms = KexManager.getDefaultKexAlgorithmList();
- public String[] serverHostKeyAlgorithms = KexManager.getDefaultServerHostkeyAlgorithmList();
- public String[] c2s_enc_algos = BlockCipherFactory.getDefaultCipherList();
- public String[] s2c_enc_algos = BlockCipherFactory.getDefaultCipherList();
- public String[] c2s_mac_algos = MAC.getMacList();
- public String[] s2c_mac_algos = MAC.getMacList();
- public String[] c2s_comp_algos = CompressionFactory.getDefaultCompressorList();
- public String[] s2c_comp_algos = CompressionFactory.getDefaultCompressorList();
-}
+ +package com.trilead.ssh2.crypto; + +import com.trilead.ssh2.compression.CompressionFactory; +import com.trilead.ssh2.crypto.cipher.BlockCipherFactory; +import com.trilead.ssh2.crypto.digest.MAC; +import com.trilead.ssh2.transport.KexManager; + + +/** + * CryptoWishList. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: CryptoWishList.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class CryptoWishList +{ + public String[] kexAlgorithms = KexManager.getDefaultKexAlgorithmList(); + public String[] serverHostKeyAlgorithms = KexManager.getDefaultServerHostkeyAlgorithmList(); + public String[] c2s_enc_algos = BlockCipherFactory.getDefaultCipherList(); + public String[] s2c_enc_algos = BlockCipherFactory.getDefaultCipherList(); + public String[] c2s_mac_algos = MAC.getMacList(); + public String[] s2c_mac_algos = MAC.getMacList(); + public String[] c2s_comp_algos = CompressionFactory.getDefaultCompressorList(); + public String[] s2c_comp_algos = CompressionFactory.getDefaultCompressorList(); +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java b/lib/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java index 035717d..499422f 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java @@ -1,98 +1,98 @@ -
-package com.trilead.ssh2.crypto;
-
-
-import java.math.BigInteger;
+ +package com.trilead.ssh2.crypto; + + +import java.math.BigInteger; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; -
-import com.trilead.ssh2.crypto.digest.HashForSSH2Types;
-
-/**
- * Establishes key material for iv/key/mac (both directions).
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KeyMaterial.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KeyMaterial
-{
- public byte[] initial_iv_client_to_server;
- public byte[] initial_iv_server_to_client;
- public byte[] enc_key_client_to_server;
- public byte[] enc_key_server_to_client;
- public byte[] integrity_key_client_to_server;
- public byte[] integrity_key_server_to_client;
-
- private static byte[] calculateKey(HashForSSH2Types sh, BigInteger K, byte[] H, byte type, byte[] SessionID,
- int keyLength)
- {
- byte[] res = new byte[keyLength];
-
- int dglen = sh.getDigestLength();
- int numRounds = (keyLength + dglen - 1) / dglen;
-
- byte[][] tmp = new byte[numRounds][];
-
- sh.reset();
- sh.updateBigInt(K);
- sh.updateBytes(H);
- sh.updateByte(type);
- sh.updateBytes(SessionID);
-
- tmp[0] = sh.getDigest();
-
- int off = 0;
- int produced = Math.min(dglen, keyLength);
-
- System.arraycopy(tmp[0], 0, res, off, produced);
-
- keyLength -= produced;
- off += produced;
-
- for (int i = 1; i < numRounds; i++)
- {
- sh.updateBigInt(K);
- sh.updateBytes(H);
-
- for (int j = 0; j < i; j++)
- sh.updateBytes(tmp[j]);
-
- tmp[i] = sh.getDigest();
-
- produced = Math.min(dglen, keyLength);
- System.arraycopy(tmp[i], 0, res, off, produced);
- keyLength -= produced;
- off += produced;
- }
-
- return res;
- }
-
+ +import com.trilead.ssh2.crypto.digest.HashForSSH2Types; + +/** + * Establishes key material for iv/key/mac (both directions). + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: KeyMaterial.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class KeyMaterial +{ + public byte[] initial_iv_client_to_server; + public byte[] initial_iv_server_to_client; + public byte[] enc_key_client_to_server; + public byte[] enc_key_server_to_client; + public byte[] integrity_key_client_to_server; + public byte[] integrity_key_server_to_client; + + private static byte[] calculateKey(HashForSSH2Types sh, BigInteger K, byte[] H, byte type, byte[] SessionID, + int keyLength) + { + byte[] res = new byte[keyLength]; + + int dglen = sh.getDigestLength(); + int numRounds = (keyLength + dglen - 1) / dglen; + + byte[][] tmp = new byte[numRounds][]; + + sh.reset(); + sh.updateBigInt(K); + sh.updateBytes(H); + sh.updateByte(type); + sh.updateBytes(SessionID); + + tmp[0] = sh.getDigest(); + + int off = 0; + int produced = Math.min(dglen, keyLength); + + System.arraycopy(tmp[0], 0, res, off, produced); + + keyLength -= produced; + off += produced; + + for (int i = 1; i < numRounds; i++) + { + sh.updateBigInt(K); + sh.updateBytes(H); + + for (int j = 0; j < i; j++) + sh.updateBytes(tmp[j]); + + tmp[i] = sh.getDigest(); + + produced = Math.min(dglen, keyLength); + System.arraycopy(tmp[i], 0, res, off, produced); + keyLength -= produced; + off += produced; + } + + return res; + } + public static KeyMaterial create(String hashAlgo, byte[] H, BigInteger K, byte[] SessionID, int keyLengthCS, - int blockSizeCS, int macLengthCS, int keyLengthSC, int blockSizeSC, int macLengthSC)
- throws IllegalArgumentException
- {
- KeyMaterial km = new KeyMaterial();
-
+ int blockSizeCS, int macLengthCS, int keyLengthSC, int blockSizeSC, int macLengthSC) + throws IllegalArgumentException + { + KeyMaterial km = new KeyMaterial(); + HashForSSH2Types sh; try { sh = new HashForSSH2Types(MessageDigest.getInstance(hashAlgo)); } catch (NoSuchAlgorithmException e) { throw new IllegalArgumentException(e); } -
- km.initial_iv_client_to_server = calculateKey(sh, K, H, (byte) 'A', SessionID, blockSizeCS);
-
- km.initial_iv_server_to_client = calculateKey(sh, K, H, (byte) 'B', SessionID, blockSizeSC);
-
- km.enc_key_client_to_server = calculateKey(sh, K, H, (byte) 'C', SessionID, keyLengthCS);
-
- km.enc_key_server_to_client = calculateKey(sh, K, H, (byte) 'D', SessionID, keyLengthSC);
-
- km.integrity_key_client_to_server = calculateKey(sh, K, H, (byte) 'E', SessionID, macLengthCS);
-
- km.integrity_key_server_to_client = calculateKey(sh, K, H, (byte) 'F', SessionID, macLengthSC);
-
- return km;
- }
-}
+ + km.initial_iv_client_to_server = calculateKey(sh, K, H, (byte) 'A', SessionID, blockSizeCS); + + km.initial_iv_server_to_client = calculateKey(sh, K, H, (byte) 'B', SessionID, blockSizeSC); + + km.enc_key_client_to_server = calculateKey(sh, K, H, (byte) 'C', SessionID, keyLengthCS); + + km.enc_key_server_to_client = calculateKey(sh, K, H, (byte) 'D', SessionID, keyLengthSC); + + km.integrity_key_client_to_server = calculateKey(sh, K, H, (byte) 'E', SessionID, macLengthCS); + + km.integrity_key_server_to_client = calculateKey(sh, K, H, (byte) 'F', SessionID, macLengthSC); + + return km; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java b/lib/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java index cf6be37..bb14464 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java @@ -1,442 +1,442 @@ -
-package com.trilead.ssh2.crypto;
-
-import java.io.BufferedReader;
-import java.io.CharArrayReader;
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.DigestException;
-import java.security.KeyFactory;
-import java.security.KeyPair;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.security.PrivateKey;
-import java.security.PublicKey;
-import java.security.spec.DSAPrivateKeySpec;
-import java.security.spec.DSAPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.RSAPrivateCrtKeySpec;
-import java.security.spec.RSAPrivateKeySpec;
-import java.security.spec.RSAPublicKeySpec;
-
-import com.trilead.ssh2.crypto.cipher.AES;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.CBCMode;
-import com.trilead.ssh2.crypto.cipher.DES;
-import com.trilead.ssh2.crypto.cipher.DESede;
-
-/**
- * PEM Support.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PEMDecoder.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PEMDecoder
-{
- public static final int PEM_RSA_PRIVATE_KEY = 1;
- public static final int PEM_DSA_PRIVATE_KEY = 2;
-
- private static final int hexToInt(char c)
- {
- if ((c >= 'a') && (c <= 'f'))
- {
- return (c - 'a') + 10;
- }
-
- if ((c >= 'A') && (c <= 'F'))
- {
- return (c - 'A') + 10;
- }
-
- if ((c >= '0') && (c <= '9'))
- {
- return (c - '0');
- }
-
- throw new IllegalArgumentException("Need hex char");
- }
-
- private static byte[] hexToByteArray(String hex)
- {
- if (hex == null)
- throw new IllegalArgumentException("null argument");
-
- if ((hex.length() % 2) != 0)
- throw new IllegalArgumentException("Uneven string length in hex encoding.");
-
- byte decoded[] = new byte[hex.length() / 2];
-
- for (int i = 0; i < decoded.length; i++)
- {
- int hi = hexToInt(hex.charAt(i * 2));
- int lo = hexToInt(hex.charAt((i * 2) + 1));
-
- decoded[i] = (byte) (hi * 16 + lo);
- }
-
- return decoded;
- }
-
- private static byte[] generateKeyFromPasswordSaltWithMD5(byte[] password, byte[] salt, int keyLen)
- throws IOException
- {
- if (salt.length < 8)
- throw new IllegalArgumentException("Salt needs to be at least 8 bytes for key generation.");
-
- MessageDigest md5;
- try {
- md5 = MessageDigest.getInstance("MD5");
- } catch (NoSuchAlgorithmException e) {
- throw new IllegalArgumentException("VM does not support MD5", e);
- }
-
- byte[] key = new byte[keyLen];
- byte[] tmp = new byte[md5.getDigestLength()];
-
- while (true)
- {
- md5.update(password, 0, password.length);
- md5.update(salt, 0, 8); // ARGH we only use the first 8 bytes of the
- // salt in this step.
- // This took me two hours until I got AES-xxx running.
-
- int copy = (keyLen < tmp.length) ? keyLen : tmp.length;
-
- try {
- md5.digest(tmp, 0, tmp.length);
- } catch (DigestException e) {
- IOException ex = new IOException("could not digest password");
- ex.initCause(e);
- throw ex;
- }
-
- System.arraycopy(tmp, 0, key, key.length - keyLen, copy);
-
- keyLen -= copy;
-
- if (keyLen == 0)
- return key;
-
- md5.update(tmp, 0, tmp.length);
- }
- }
-
- private static byte[] removePadding(byte[] buff, int blockSize) throws IOException
- {
- /* Removes RFC 1423/PKCS #7 padding */
-
- int rfc_1423_padding = buff[buff.length - 1] & 0xff;
-
- if ((rfc_1423_padding < 1) || (rfc_1423_padding > blockSize))
- throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?");
-
- for (int i = 2; i <= rfc_1423_padding; i++)
- {
- if (buff[buff.length - i] != rfc_1423_padding)
- throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?");
- }
-
- byte[] tmp = new byte[buff.length - rfc_1423_padding];
- System.arraycopy(buff, 0, tmp, 0, buff.length - rfc_1423_padding);
- return tmp;
- }
-
- public static final PEMStructure parsePEM(char[] pem) throws IOException
- {
- PEMStructure ps = new PEMStructure();
-
- String line = null;
-
- BufferedReader br = new BufferedReader(new CharArrayReader(pem));
-
- String endLine = null;
-
- while (true)
- {
- line = br.readLine();
-
- if (line == null)
- throw new IOException("Invalid PEM structure, '-----BEGIN...' missing");
-
- line = line.trim();
-
- if (line.startsWith("-----BEGIN DSA PRIVATE KEY-----"))
- {
- endLine = "-----END DSA PRIVATE KEY-----";
- ps.pemType = PEM_DSA_PRIVATE_KEY;
- break;
- }
-
- if (line.startsWith("-----BEGIN RSA PRIVATE KEY-----"))
- {
- endLine = "-----END RSA PRIVATE KEY-----";
- ps.pemType = PEM_RSA_PRIVATE_KEY;
- break;
- }
- }
-
- while (true)
- {
- line = br.readLine();
-
- if (line == null)
- throw new IOException("Invalid PEM structure, " + endLine + " missing");
-
- line = line.trim();
-
- int sem_idx = line.indexOf(':');
-
- if (sem_idx == -1)
- break;
-
- String name = line.substring(0, sem_idx + 1);
- String value = line.substring(sem_idx + 1);
-
- String values[] = value.split(",");
-
- for (int i = 0; i < values.length; i++)
- values[i] = values[i].trim();
-
- // Proc-Type: 4,ENCRYPTED
- // DEK-Info: DES-EDE3-CBC,579B6BE3E5C60483
-
- if ("Proc-Type:".equals(name))
- {
- ps.procType = values;
- continue;
- }
-
- if ("DEK-Info:".equals(name))
- {
- ps.dekInfo = values;
- continue;
- }
- /* Ignore line */
- }
-
- StringBuffer keyData = new StringBuffer();
-
- while (true)
- {
- if (line == null)
- throw new IOException("Invalid PEM structure, " + endLine + " missing");
-
- line = line.trim();
-
- if (line.startsWith(endLine))
- break;
-
- keyData.append(line);
-
- line = br.readLine();
- }
-
- char[] pem_chars = new char[keyData.length()];
- keyData.getChars(0, pem_chars.length, pem_chars, 0);
-
- ps.data = Base64.decode(pem_chars);
-
- if (ps.data.length == 0)
- throw new IOException("Invalid PEM structure, no data available");
-
- return ps;
- }
-
- private static final void decryptPEM(PEMStructure ps, byte[] pw) throws IOException
- {
- if (ps.dekInfo == null)
- throw new IOException("Broken PEM, no mode and salt given, but encryption enabled");
-
- if (ps.dekInfo.length != 2)
- throw new IOException("Broken PEM, DEK-Info is incomplete!");
-
- String algo = ps.dekInfo[0];
- byte[] salt = hexToByteArray(ps.dekInfo[1]);
-
- BlockCipher bc = null;
-
- if (algo.equals("DES-EDE3-CBC"))
- {
- DESede des3 = new DESede();
- des3.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24));
- bc = new CBCMode(des3, salt, false);
- }
- else if (algo.equals("DES-CBC"))
- {
- DES des = new DES();
- des.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 8));
- bc = new CBCMode(des, salt, false);
- }
- else if (algo.equals("AES-128-CBC"))
- {
- AES aes = new AES();
- aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 16));
- bc = new CBCMode(aes, salt, false);
- }
- else if (algo.equals("AES-192-CBC"))
- {
- AES aes = new AES();
- aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24));
- bc = new CBCMode(aes, salt, false);
- }
- else if (algo.equals("AES-256-CBC"))
- {
- AES aes = new AES();
- aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 32));
- bc = new CBCMode(aes, salt, false);
- }
- else
- {
- throw new IOException("Cannot decrypt PEM structure, unknown cipher " + algo);
- }
-
- if ((ps.data.length % bc.getBlockSize()) != 0)
- throw new IOException("Invalid PEM structure, size of encrypted block is not a multiple of "
- + bc.getBlockSize());
-
- /* Now decrypt the content */
-
- byte[] dz = new byte[ps.data.length];
-
- for (int i = 0; i < ps.data.length / bc.getBlockSize(); i++)
- {
- bc.transformBlock(ps.data, i * bc.getBlockSize(), dz, i * bc.getBlockSize());
- }
-
- /* Now check and remove RFC 1423/PKCS #7 padding */
-
- dz = removePadding(dz, bc.getBlockSize());
-
- ps.data = dz;
- ps.dekInfo = null;
- ps.procType = null;
- }
-
- public static final boolean isPEMEncrypted(PEMStructure ps) throws IOException
- {
- if (ps.procType == null)
- return false;
-
- if (ps.procType.length != 2)
- throw new IOException("Unknown Proc-Type field.");
-
- if ("4".equals(ps.procType[0]) == false)
- throw new IOException("Unknown Proc-Type field (" + ps.procType[0] + ")");
-
- if ("ENCRYPTED".equals(ps.procType[1]))
- return true;
-
- return false;
- }
-
- public static KeyPair decode(char[] pem, String password) throws IOException
- {
- PEMStructure ps = parsePEM(pem);
-
- if (isPEMEncrypted(ps))
- {
- if (password == null)
- throw new IOException("PEM is encrypted, but no password was specified");
-
- decryptPEM(ps, password.getBytes("ISO-8859-1"));
- }
-
- if (ps.pemType == PEM_DSA_PRIVATE_KEY)
- {
- SimpleDERReader dr = new SimpleDERReader(ps.data);
-
- byte[] seq = dr.readSequenceAsByteArray();
-
- if (dr.available() != 0)
- throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
-
- dr.resetInput(seq);
-
- BigInteger version = dr.readInt();
-
- if (version.compareTo(BigInteger.ZERO) != 0)
- throw new IOException("Wrong version (" + version + ") in DSA PRIVATE KEY DER stream.");
-
- BigInteger p = dr.readInt();
- BigInteger q = dr.readInt();
- BigInteger g = dr.readInt();
- BigInteger y = dr.readInt();
- BigInteger x = dr.readInt();
-
- if (dr.available() != 0)
- throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
-
- DSAPrivateKeySpec privSpec = new DSAPrivateKeySpec(x, p, q, g);
- DSAPublicKeySpec pubSpec = new DSAPublicKeySpec(y, p, q, g);
-
- PublicKey pubKey;
- PrivateKey privKey;
- try {
- KeyFactory kf = KeyFactory.getInstance("DSA");
- pubKey = kf.generatePublic(pubSpec);
- privKey = kf.generatePrivate(privSpec);
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException();
- ex.initCause(ex);
- throw ex;
- } catch (InvalidKeySpecException e) {
- IOException ex = new IOException();
- ex.initCause(ex);
- throw ex;
- }
-
- return new KeyPair(pubKey, privKey);
- }
-
- if (ps.pemType == PEM_RSA_PRIVATE_KEY)
- {
- SimpleDERReader dr = new SimpleDERReader(ps.data);
-
- byte[] seq = dr.readSequenceAsByteArray();
-
- if (dr.available() != 0)
- throw new IOException("Padding in RSA PRIVATE KEY DER stream.");
-
- dr.resetInput(seq);
-
- BigInteger version = dr.readInt();
-
- if ((version.compareTo(BigInteger.ZERO) != 0) && (version.compareTo(BigInteger.ONE) != 0))
- throw new IOException("Wrong version (" + version + ") in RSA PRIVATE KEY DER stream.");
-
- BigInteger n = dr.readInt();
- BigInteger e = dr.readInt();
- BigInteger d = dr.readInt();
+ +package com.trilead.ssh2.crypto; + +import java.io.BufferedReader; +import java.io.CharArrayReader; +import java.io.IOException; +import java.math.BigInteger; +import java.security.DigestException; +import java.security.KeyFactory; +import java.security.KeyPair; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.security.spec.DSAPrivateKeySpec; +import java.security.spec.DSAPublicKeySpec; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.RSAPrivateCrtKeySpec; +import java.security.spec.RSAPrivateKeySpec; +import java.security.spec.RSAPublicKeySpec; + +import com.trilead.ssh2.crypto.cipher.AES; +import com.trilead.ssh2.crypto.cipher.BlockCipher; +import com.trilead.ssh2.crypto.cipher.CBCMode; +import com.trilead.ssh2.crypto.cipher.DES; +import com.trilead.ssh2.crypto.cipher.DESede; + +/** + * PEM Support. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PEMDecoder.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class PEMDecoder +{ + public static final int PEM_RSA_PRIVATE_KEY = 1; + public static final int PEM_DSA_PRIVATE_KEY = 2; + + private static final int hexToInt(char c) + { + if ((c >= 'a') && (c <= 'f')) + { + return (c - 'a') + 10; + } + + if ((c >= 'A') && (c <= 'F')) + { + return (c - 'A') + 10; + } + + if ((c >= '0') && (c <= '9')) + { + return (c - '0'); + } + + throw new IllegalArgumentException("Need hex char"); + } + + private static byte[] hexToByteArray(String hex) + { + if (hex == null) + throw new IllegalArgumentException("null argument"); + + if ((hex.length() % 2) != 0) + throw new IllegalArgumentException("Uneven string length in hex encoding."); + + byte decoded[] = new byte[hex.length() / 2]; + + for (int i = 0; i < decoded.length; i++) + { + int hi = hexToInt(hex.charAt(i * 2)); + int lo = hexToInt(hex.charAt((i * 2) + 1)); + + decoded[i] = (byte) (hi * 16 + lo); + } + + return decoded; + } + + private static byte[] generateKeyFromPasswordSaltWithMD5(byte[] password, byte[] salt, int keyLen) + throws IOException + { + if (salt.length < 8) + throw new IllegalArgumentException("Salt needs to be at least 8 bytes for key generation."); + + MessageDigest md5; + try { + md5 = MessageDigest.getInstance("MD5"); + } catch (NoSuchAlgorithmException e) { + throw new IllegalArgumentException("VM does not support MD5", e); + } + + byte[] key = new byte[keyLen]; + byte[] tmp = new byte[md5.getDigestLength()]; + + while (true) + { + md5.update(password, 0, password.length); + md5.update(salt, 0, 8); // ARGH we only use the first 8 bytes of the + // salt in this step. + // This took me two hours until I got AES-xxx running. + + int copy = (keyLen < tmp.length) ? keyLen : tmp.length; + + try { + md5.digest(tmp, 0, tmp.length); + } catch (DigestException e) { + IOException ex = new IOException("could not digest password"); + ex.initCause(e); + throw ex; + } + + System.arraycopy(tmp, 0, key, key.length - keyLen, copy); + + keyLen -= copy; + + if (keyLen == 0) + return key; + + md5.update(tmp, 0, tmp.length); + } + } + + private static byte[] removePadding(byte[] buff, int blockSize) throws IOException + { + /* Removes RFC 1423/PKCS #7 padding */ + + int rfc_1423_padding = buff[buff.length - 1] & 0xff; + + if ((rfc_1423_padding < 1) || (rfc_1423_padding > blockSize)) + throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?"); + + for (int i = 2; i <= rfc_1423_padding; i++) + { + if (buff[buff.length - i] != rfc_1423_padding) + throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?"); + } + + byte[] tmp = new byte[buff.length - rfc_1423_padding]; + System.arraycopy(buff, 0, tmp, 0, buff.length - rfc_1423_padding); + return tmp; + } + + public static final PEMStructure parsePEM(char[] pem) throws IOException + { + PEMStructure ps = new PEMStructure(); + + String line = null; + + BufferedReader br = new BufferedReader(new CharArrayReader(pem)); + + String endLine = null; + + while (true) + { + line = br.readLine(); + + if (line == null) + throw new IOException("Invalid PEM structure, '-----BEGIN...' missing"); + + line = line.trim(); + + if (line.startsWith("-----BEGIN DSA PRIVATE KEY-----")) + { + endLine = "-----END DSA PRIVATE KEY-----"; + ps.pemType = PEM_DSA_PRIVATE_KEY; + break; + } + + if (line.startsWith("-----BEGIN RSA PRIVATE KEY-----")) + { + endLine = "-----END RSA PRIVATE KEY-----"; + ps.pemType = PEM_RSA_PRIVATE_KEY; + break; + } + } + + while (true) + { + line = br.readLine(); + + if (line == null) + throw new IOException("Invalid PEM structure, " + endLine + " missing"); + + line = line.trim(); + + int sem_idx = line.indexOf(':'); + + if (sem_idx == -1) + break; + + String name = line.substring(0, sem_idx + 1); + String value = line.substring(sem_idx + 1); + + String values[] = value.split(","); + + for (int i = 0; i < values.length; i++) + values[i] = values[i].trim(); + + // Proc-Type: 4,ENCRYPTED + // DEK-Info: DES-EDE3-CBC,579B6BE3E5C60483 + + if ("Proc-Type:".equals(name)) + { + ps.procType = values; + continue; + } + + if ("DEK-Info:".equals(name)) + { + ps.dekInfo = values; + continue; + } + /* Ignore line */ + } + + StringBuffer keyData = new StringBuffer(); + + while (true) + { + if (line == null) + throw new IOException("Invalid PEM structure, " + endLine + " missing"); + + line = line.trim(); + + if (line.startsWith(endLine)) + break; + + keyData.append(line); + + line = br.readLine(); + } + + char[] pem_chars = new char[keyData.length()]; + keyData.getChars(0, pem_chars.length, pem_chars, 0); + + ps.data = Base64.decode(pem_chars); + + if (ps.data.length == 0) + throw new IOException("Invalid PEM structure, no data available"); + + return ps; + } + + private static final void decryptPEM(PEMStructure ps, byte[] pw) throws IOException + { + if (ps.dekInfo == null) + throw new IOException("Broken PEM, no mode and salt given, but encryption enabled"); + + if (ps.dekInfo.length != 2) + throw new IOException("Broken PEM, DEK-Info is incomplete!"); + + String algo = ps.dekInfo[0]; + byte[] salt = hexToByteArray(ps.dekInfo[1]); + + BlockCipher bc = null; + + if (algo.equals("DES-EDE3-CBC")) + { + DESede des3 = new DESede(); + des3.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24)); + bc = new CBCMode(des3, salt, false); + } + else if (algo.equals("DES-CBC")) + { + DES des = new DES(); + des.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 8)); + bc = new CBCMode(des, salt, false); + } + else if (algo.equals("AES-128-CBC")) + { + AES aes = new AES(); + aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 16)); + bc = new CBCMode(aes, salt, false); + } + else if (algo.equals("AES-192-CBC")) + { + AES aes = new AES(); + aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24)); + bc = new CBCMode(aes, salt, false); + } + else if (algo.equals("AES-256-CBC")) + { + AES aes = new AES(); + aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 32)); + bc = new CBCMode(aes, salt, false); + } + else + { + throw new IOException("Cannot decrypt PEM structure, unknown cipher " + algo); + } + + if ((ps.data.length % bc.getBlockSize()) != 0) + throw new IOException("Invalid PEM structure, size of encrypted block is not a multiple of " + + bc.getBlockSize()); + + /* Now decrypt the content */ + + byte[] dz = new byte[ps.data.length]; + + for (int i = 0; i < ps.data.length / bc.getBlockSize(); i++) + { + bc.transformBlock(ps.data, i * bc.getBlockSize(), dz, i * bc.getBlockSize()); + } + + /* Now check and remove RFC 1423/PKCS #7 padding */ + + dz = removePadding(dz, bc.getBlockSize()); + + ps.data = dz; + ps.dekInfo = null; + ps.procType = null; + } + + public static final boolean isPEMEncrypted(PEMStructure ps) throws IOException + { + if (ps.procType == null) + return false; + + if (ps.procType.length != 2) + throw new IOException("Unknown Proc-Type field."); + + if ("4".equals(ps.procType[0]) == false) + throw new IOException("Unknown Proc-Type field (" + ps.procType[0] + ")"); + + if ("ENCRYPTED".equals(ps.procType[1])) + return true; + + return false; + } + + public static KeyPair decode(char[] pem, String password) throws IOException + { + PEMStructure ps = parsePEM(pem); + + if (isPEMEncrypted(ps)) + { + if (password == null) + throw new IOException("PEM is encrypted, but no password was specified"); + + decryptPEM(ps, password.getBytes("ISO-8859-1")); + } + + if (ps.pemType == PEM_DSA_PRIVATE_KEY) + { + SimpleDERReader dr = new SimpleDERReader(ps.data); + + byte[] seq = dr.readSequenceAsByteArray(); + + if (dr.available() != 0) + throw new IOException("Padding in DSA PRIVATE KEY DER stream."); + + dr.resetInput(seq); + + BigInteger version = dr.readInt(); + + if (version.compareTo(BigInteger.ZERO) != 0) + throw new IOException("Wrong version (" + version + ") in DSA PRIVATE KEY DER stream."); + + BigInteger p = dr.readInt(); + BigInteger q = dr.readInt(); + BigInteger g = dr.readInt(); + BigInteger y = dr.readInt(); + BigInteger x = dr.readInt(); + + if (dr.available() != 0) + throw new IOException("Padding in DSA PRIVATE KEY DER stream."); + + DSAPrivateKeySpec privSpec = new DSAPrivateKeySpec(x, p, q, g); + DSAPublicKeySpec pubSpec = new DSAPublicKeySpec(y, p, q, g); + + PublicKey pubKey; + PrivateKey privKey; + try { + KeyFactory kf = KeyFactory.getInstance("DSA"); + pubKey = kf.generatePublic(pubSpec); + privKey = kf.generatePrivate(privSpec); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException(); + ex.initCause(ex); + throw ex; + } catch (InvalidKeySpecException e) { + IOException ex = new IOException(); + ex.initCause(ex); + throw ex; + } + + return new KeyPair(pubKey, privKey); + } + + if (ps.pemType == PEM_RSA_PRIVATE_KEY) + { + SimpleDERReader dr = new SimpleDERReader(ps.data); + + byte[] seq = dr.readSequenceAsByteArray(); + + if (dr.available() != 0) + throw new IOException("Padding in RSA PRIVATE KEY DER stream."); + + dr.resetInput(seq); + + BigInteger version = dr.readInt(); + + if ((version.compareTo(BigInteger.ZERO) != 0) && (version.compareTo(BigInteger.ONE) != 0)) + throw new IOException("Wrong version (" + version + ") in RSA PRIVATE KEY DER stream."); + + BigInteger n = dr.readInt(); + BigInteger e = dr.readInt(); + BigInteger d = dr.readInt(); // TODO: is this right? - BigInteger primeP = dr.readInt();
- BigInteger primeQ = dr.readInt();
- BigInteger expP = dr.readInt();
- BigInteger expQ = dr.readInt();
- BigInteger coeff = dr.readInt();
-
- RSAPrivateKeySpec privSpec = new RSAPrivateCrtKeySpec(n, e, d, primeP, primeQ, expP, expQ, coeff);
- RSAPublicKeySpec pubSpec = new RSAPublicKeySpec(n, e);
-
- PublicKey pubKey;
- PrivateKey privKey;
- try {
- KeyFactory kf = KeyFactory.getInstance("RSA");
- pubKey = kf.generatePublic(pubSpec);
- privKey = kf.generatePrivate(privSpec);
- } catch (NoSuchAlgorithmException ex) {
- IOException ioex = new IOException();
- ioex.initCause(ex);
- throw ioex;
- } catch (InvalidKeySpecException ex) {
- IOException ioex = new IOException("invalid keyspec");
- ioex.initCause(ex);
- throw ioex;
- }
-
- return new KeyPair(pubKey, privKey);
- }
-
- throw new IOException("PEM problem: it is of unknown type");
- }
-
-}
+ BigInteger primeP = dr.readInt(); + BigInteger primeQ = dr.readInt(); + BigInteger expP = dr.readInt(); + BigInteger expQ = dr.readInt(); + BigInteger coeff = dr.readInt(); + + RSAPrivateKeySpec privSpec = new RSAPrivateCrtKeySpec(n, e, d, primeP, primeQ, expP, expQ, coeff); + RSAPublicKeySpec pubSpec = new RSAPublicKeySpec(n, e); + + PublicKey pubKey; + PrivateKey privKey; + try { + KeyFactory kf = KeyFactory.getInstance("RSA"); + pubKey = kf.generatePublic(pubSpec); + privKey = kf.generatePrivate(privSpec); + } catch (NoSuchAlgorithmException ex) { + IOException ioex = new IOException(); + ioex.initCause(ex); + throw ioex; + } catch (InvalidKeySpecException ex) { + IOException ioex = new IOException("invalid keyspec"); + ioex.initCause(ex); + throw ioex; + } + + return new KeyPair(pubKey, privKey); + } + + throw new IOException("PEM problem: it is of unknown type"); + } + +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java b/lib/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java index 6b657e8..83fb799 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java @@ -1,17 +1,17 @@ -
-package com.trilead.ssh2.crypto;
-
-/**
- * Parsed PEM structure.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PEMStructure.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class PEMStructure
-{
- public int pemType;
- String dekInfo[];
- String procType[];
- public byte[] data;
+ +package com.trilead.ssh2.crypto; + +/** + * Parsed PEM structure. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PEMStructure.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ + +public class PEMStructure +{ + public int pemType; + String dekInfo[]; + String procType[]; + public byte[] data; }
\ No newline at end of file diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java b/lib/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java index 55c6c6a..9f626ad 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java @@ -1,160 +1,160 @@ -package com.trilead.ssh2.crypto;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * SimpleDERReader.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SimpleDERReader.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class SimpleDERReader
-{
- byte[] buffer;
- int pos;
- int count;
-
- public SimpleDERReader(byte[] b)
- {
- resetInput(b);
- }
-
- public SimpleDERReader(byte[] b, int off, int len)
- {
- resetInput(b, off, len);
- }
-
- public void resetInput(byte[] b)
- {
- resetInput(b, 0, b.length);
- }
-
- public void resetInput(byte[] b, int off, int len)
- {
- buffer = b;
- pos = off;
- count = len;
- }
-
- private byte readByte() throws IOException
- {
- if (count <= 0)
- throw new IOException("DER byte array: out of data");
- count--;
- return buffer[pos++];
- }
-
- private byte[] readBytes(int len) throws IOException
- {
- if (len > count)
- throw new IOException("DER byte array: out of data");
-
- byte[] b = new byte[len];
-
- System.arraycopy(buffer, pos, b, 0, len);
-
- pos += len;
- count -= len;
-
- return b;
- }
-
- public int available()
- {
- return count;
- }
-
- private int readLength() throws IOException
- {
- int len = readByte() & 0xff;
-
- if ((len & 0x80) == 0)
- return len;
-
- int remain = len & 0x7F;
-
- if (remain == 0)
- return -1;
-
- len = 0;
-
- while (remain > 0)
- {
- len = len << 8;
- len = len | (readByte() & 0xff);
- remain--;
- }
-
- return len;
- }
-
- public int ignoreNextObject() throws IOException
- {
- int type = readByte() & 0xff;
-
- int len = readLength();
-
- if ((len < 0) || len > available())
- throw new IOException("Illegal len in DER object (" + len + ")");
-
- readBytes(len);
-
- return type;
- }
-
- public BigInteger readInt() throws IOException
- {
- int type = readByte() & 0xff;
-
- if (type != 0x02)
- throw new IOException("Expected DER Integer, but found type " + type);
-
- int len = readLength();
-
- if ((len < 0) || len > available())
- throw new IOException("Illegal len in DER object (" + len + ")");
-
- byte[] b = readBytes(len);
-
- BigInteger bi = new BigInteger(b);
-
- return bi;
- }
-
- public byte[] readSequenceAsByteArray() throws IOException
- {
- int type = readByte() & 0xff;
-
- if (type != 0x30)
- throw new IOException("Expected DER Sequence, but found type " + type);
-
- int len = readLength();
-
- if ((len < 0) || len > available())
- throw new IOException("Illegal len in DER object (" + len + ")");
-
- byte[] b = readBytes(len);
-
- return b;
- }
-
- public byte[] readOctetString() throws IOException
- {
- int type = readByte() & 0xff;
-
- if (type != 0x04)
- throw new IOException("Expected DER Octetstring, but found type " + type);
-
- int len = readLength();
-
- if ((len < 0) || len > available())
- throw new IOException("Illegal len in DER object (" + len + ")");
-
- byte[] b = readBytes(len);
-
- return b;
- }
-
-}
+package com.trilead.ssh2.crypto; + +import java.io.IOException; + +import java.math.BigInteger; + +/** + * SimpleDERReader. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: SimpleDERReader.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class SimpleDERReader +{ + byte[] buffer; + int pos; + int count; + + public SimpleDERReader(byte[] b) + { + resetInput(b); + } + + public SimpleDERReader(byte[] b, int off, int len) + { + resetInput(b, off, len); + } + + public void resetInput(byte[] b) + { + resetInput(b, 0, b.length); + } + + public void resetInput(byte[] b, int off, int len) + { + buffer = b; + pos = off; + count = len; + } + + private byte readByte() throws IOException + { + if (count <= 0) + throw new IOException("DER byte array: out of data"); + count--; + return buffer[pos++]; + } + + private byte[] readBytes(int len) throws IOException + { + if (len > count) + throw new IOException("DER byte array: out of data"); + + byte[] b = new byte[len]; + + System.arraycopy(buffer, pos, b, 0, len); + + pos += len; + count -= len; + + return b; + } + + public int available() + { + return count; + } + + private int readLength() throws IOException + { + int len = readByte() & 0xff; + + if ((len & 0x80) == 0) + return len; + + int remain = len & 0x7F; + + if (remain == 0) + return -1; + + len = 0; + + while (remain > 0) + { + len = len << 8; + len = len | (readByte() & 0xff); + remain--; + } + + return len; + } + + public int ignoreNextObject() throws IOException + { + int type = readByte() & 0xff; + + int len = readLength(); + + if ((len < 0) || len > available()) + throw new IOException("Illegal len in DER object (" + len + ")"); + + readBytes(len); + + return type; + } + + public BigInteger readInt() throws IOException + { + int type = readByte() & 0xff; + + if (type != 0x02) + throw new IOException("Expected DER Integer, but found type " + type); + + int len = readLength(); + + if ((len < 0) || len > available()) + throw new IOException("Illegal len in DER object (" + len + ")"); + + byte[] b = readBytes(len); + + BigInteger bi = new BigInteger(b); + + return bi; + } + + public byte[] readSequenceAsByteArray() throws IOException + { + int type = readByte() & 0xff; + + if (type != 0x30) + throw new IOException("Expected DER Sequence, but found type " + type); + + int len = readLength(); + + if ((len < 0) || len > available()) + throw new IOException("Illegal len in DER object (" + len + ")"); + + byte[] b = readBytes(len); + + return b; + } + + public byte[] readOctetString() throws IOException + { + int type = readByte() & 0xff; + + if (type != 0x04) + throw new IOException("Expected DER Octetstring, but found type " + type); + + int len = readLength(); + + if ((len < 0) || len > available()) + throw new IOException("Illegal len in DER object (" + len + ")"); + + byte[] b = readBytes(len); + + return b; + } + +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java index 15fb410..e89e4a6 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java @@ -1,698 +1,698 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- */
-
-/**
- * An implementation of the AES (Rijndael), from FIPS-197.
- * <p>
- * For further details see: <a
- * href="http://csrc.nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/
- * </a>.
- *
- * This implementation is based on optimizations from Dr. Brian Gladman's paper
- * and C code at <a
- * href="http://fp.gladman.plus.com/cryptography_technology/rijndael/">http://fp.gladman.plus.com/cryptography_technology/rijndael/
- * </a>
- *
- * There are three levels of tradeoff of speed vs memory Because java has no
- * preprocessor, they are written as three separate classes from which to choose
- *
- * The fastest uses 8Kbytes of static tables to precompute round calculations, 4
- * 256 word tables for encryption and 4 for decryption.
- *
- * The middle performance version uses only one 256 word table for each, for a
- * total of 2Kbytes, adding 12 rotate operations per round to compute the values
- * contained in the other tables from the contents of the first
- *
- * The slowest version uses no static tables at all and computes the values in
- * each round
- * <p>
- * This file contains the fast version with 8Kbytes of static tables for round
- * precomputation
- *
- * @author See comments in the source file
- * @version $Id: AES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class AES implements BlockCipher
-{
- // The S box
- private static final byte[] S = { (byte) 99, (byte) 124, (byte) 119, (byte) 123, (byte) 242, (byte) 107,
- (byte) 111, (byte) 197, (byte) 48, (byte) 1, (byte) 103, (byte) 43, (byte) 254, (byte) 215, (byte) 171,
- (byte) 118, (byte) 202, (byte) 130, (byte) 201, (byte) 125, (byte) 250, (byte) 89, (byte) 71, (byte) 240,
- (byte) 173, (byte) 212, (byte) 162, (byte) 175, (byte) 156, (byte) 164, (byte) 114, (byte) 192, (byte) 183,
- (byte) 253, (byte) 147, (byte) 38, (byte) 54, (byte) 63, (byte) 247, (byte) 204, (byte) 52, (byte) 165,
- (byte) 229, (byte) 241, (byte) 113, (byte) 216, (byte) 49, (byte) 21, (byte) 4, (byte) 199, (byte) 35,
- (byte) 195, (byte) 24, (byte) 150, (byte) 5, (byte) 154, (byte) 7, (byte) 18, (byte) 128, (byte) 226,
- (byte) 235, (byte) 39, (byte) 178, (byte) 117, (byte) 9, (byte) 131, (byte) 44, (byte) 26, (byte) 27,
- (byte) 110, (byte) 90, (byte) 160, (byte) 82, (byte) 59, (byte) 214, (byte) 179, (byte) 41, (byte) 227,
- (byte) 47, (byte) 132, (byte) 83, (byte) 209, (byte) 0, (byte) 237, (byte) 32, (byte) 252, (byte) 177,
- (byte) 91, (byte) 106, (byte) 203, (byte) 190, (byte) 57, (byte) 74, (byte) 76, (byte) 88, (byte) 207,
- (byte) 208, (byte) 239, (byte) 170, (byte) 251, (byte) 67, (byte) 77, (byte) 51, (byte) 133, (byte) 69,
- (byte) 249, (byte) 2, (byte) 127, (byte) 80, (byte) 60, (byte) 159, (byte) 168, (byte) 81, (byte) 163,
- (byte) 64, (byte) 143, (byte) 146, (byte) 157, (byte) 56, (byte) 245, (byte) 188, (byte) 182, (byte) 218,
- (byte) 33, (byte) 16, (byte) 255, (byte) 243, (byte) 210, (byte) 205, (byte) 12, (byte) 19, (byte) 236,
- (byte) 95, (byte) 151, (byte) 68, (byte) 23, (byte) 196, (byte) 167, (byte) 126, (byte) 61, (byte) 100,
- (byte) 93, (byte) 25, (byte) 115, (byte) 96, (byte) 129, (byte) 79, (byte) 220, (byte) 34, (byte) 42,
- (byte) 144, (byte) 136, (byte) 70, (byte) 238, (byte) 184, (byte) 20, (byte) 222, (byte) 94, (byte) 11,
- (byte) 219, (byte) 224, (byte) 50, (byte) 58, (byte) 10, (byte) 73, (byte) 6, (byte) 36, (byte) 92,
- (byte) 194, (byte) 211, (byte) 172, (byte) 98, (byte) 145, (byte) 149, (byte) 228, (byte) 121, (byte) 231,
- (byte) 200, (byte) 55, (byte) 109, (byte) 141, (byte) 213, (byte) 78, (byte) 169, (byte) 108, (byte) 86,
- (byte) 244, (byte) 234, (byte) 101, (byte) 122, (byte) 174, (byte) 8, (byte) 186, (byte) 120, (byte) 37,
- (byte) 46, (byte) 28, (byte) 166, (byte) 180, (byte) 198, (byte) 232, (byte) 221, (byte) 116, (byte) 31,
- (byte) 75, (byte) 189, (byte) 139, (byte) 138, (byte) 112, (byte) 62, (byte) 181, (byte) 102, (byte) 72,
- (byte) 3, (byte) 246, (byte) 14, (byte) 97, (byte) 53, (byte) 87, (byte) 185, (byte) 134, (byte) 193,
- (byte) 29, (byte) 158, (byte) 225, (byte) 248, (byte) 152, (byte) 17, (byte) 105, (byte) 217, (byte) 142,
- (byte) 148, (byte) 155, (byte) 30, (byte) 135, (byte) 233, (byte) 206, (byte) 85, (byte) 40, (byte) 223,
- (byte) 140, (byte) 161, (byte) 137, (byte) 13, (byte) 191, (byte) 230, (byte) 66, (byte) 104, (byte) 65,
- (byte) 153, (byte) 45, (byte) 15, (byte) 176, (byte) 84, (byte) 187, (byte) 22, };
-
- // The inverse S-box
- private static final byte[] Si = { (byte) 82, (byte) 9, (byte) 106, (byte) 213, (byte) 48, (byte) 54, (byte) 165,
- (byte) 56, (byte) 191, (byte) 64, (byte) 163, (byte) 158, (byte) 129, (byte) 243, (byte) 215, (byte) 251,
- (byte) 124, (byte) 227, (byte) 57, (byte) 130, (byte) 155, (byte) 47, (byte) 255, (byte) 135, (byte) 52,
- (byte) 142, (byte) 67, (byte) 68, (byte) 196, (byte) 222, (byte) 233, (byte) 203, (byte) 84, (byte) 123,
- (byte) 148, (byte) 50, (byte) 166, (byte) 194, (byte) 35, (byte) 61, (byte) 238, (byte) 76, (byte) 149,
- (byte) 11, (byte) 66, (byte) 250, (byte) 195, (byte) 78, (byte) 8, (byte) 46, (byte) 161, (byte) 102,
- (byte) 40, (byte) 217, (byte) 36, (byte) 178, (byte) 118, (byte) 91, (byte) 162, (byte) 73, (byte) 109,
- (byte) 139, (byte) 209, (byte) 37, (byte) 114, (byte) 248, (byte) 246, (byte) 100, (byte) 134, (byte) 104,
- (byte) 152, (byte) 22, (byte) 212, (byte) 164, (byte) 92, (byte) 204, (byte) 93, (byte) 101, (byte) 182,
- (byte) 146, (byte) 108, (byte) 112, (byte) 72, (byte) 80, (byte) 253, (byte) 237, (byte) 185, (byte) 218,
- (byte) 94, (byte) 21, (byte) 70, (byte) 87, (byte) 167, (byte) 141, (byte) 157, (byte) 132, (byte) 144,
- (byte) 216, (byte) 171, (byte) 0, (byte) 140, (byte) 188, (byte) 211, (byte) 10, (byte) 247, (byte) 228,
- (byte) 88, (byte) 5, (byte) 184, (byte) 179, (byte) 69, (byte) 6, (byte) 208, (byte) 44, (byte) 30,
- (byte) 143, (byte) 202, (byte) 63, (byte) 15, (byte) 2, (byte) 193, (byte) 175, (byte) 189, (byte) 3,
- (byte) 1, (byte) 19, (byte) 138, (byte) 107, (byte) 58, (byte) 145, (byte) 17, (byte) 65, (byte) 79,
- (byte) 103, (byte) 220, (byte) 234, (byte) 151, (byte) 242, (byte) 207, (byte) 206, (byte) 240, (byte) 180,
- (byte) 230, (byte) 115, (byte) 150, (byte) 172, (byte) 116, (byte) 34, (byte) 231, (byte) 173, (byte) 53,
- (byte) 133, (byte) 226, (byte) 249, (byte) 55, (byte) 232, (byte) 28, (byte) 117, (byte) 223, (byte) 110,
- (byte) 71, (byte) 241, (byte) 26, (byte) 113, (byte) 29, (byte) 41, (byte) 197, (byte) 137, (byte) 111,
- (byte) 183, (byte) 98, (byte) 14, (byte) 170, (byte) 24, (byte) 190, (byte) 27, (byte) 252, (byte) 86,
- (byte) 62, (byte) 75, (byte) 198, (byte) 210, (byte) 121, (byte) 32, (byte) 154, (byte) 219, (byte) 192,
- (byte) 254, (byte) 120, (byte) 205, (byte) 90, (byte) 244, (byte) 31, (byte) 221, (byte) 168, (byte) 51,
- (byte) 136, (byte) 7, (byte) 199, (byte) 49, (byte) 177, (byte) 18, (byte) 16, (byte) 89, (byte) 39,
- (byte) 128, (byte) 236, (byte) 95, (byte) 96, (byte) 81, (byte) 127, (byte) 169, (byte) 25, (byte) 181,
- (byte) 74, (byte) 13, (byte) 45, (byte) 229, (byte) 122, (byte) 159, (byte) 147, (byte) 201, (byte) 156,
- (byte) 239, (byte) 160, (byte) 224, (byte) 59, (byte) 77, (byte) 174, (byte) 42, (byte) 245, (byte) 176,
- (byte) 200, (byte) 235, (byte) 187, (byte) 60, (byte) 131, (byte) 83, (byte) 153, (byte) 97, (byte) 23,
- (byte) 43, (byte) 4, (byte) 126, (byte) 186, (byte) 119, (byte) 214, (byte) 38, (byte) 225, (byte) 105,
- (byte) 20, (byte) 99, (byte) 85, (byte) 33, (byte) 12, (byte) 125, };
-
- // vector used in calculating key schedule (powers of x in GF(256))
- private static final int[] rcon = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab,
- 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91 };
-
- // precomputation tables of calculations for rounds
- private static final int[] T0 = { 0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff, 0xbd6b6bd6,
- 0xb16f6fde, 0x54c5c591, 0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d,
- 0x9a7676ec, 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb,
- 0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, 0xc2b7b775,
- 0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83, 0x5c343468, 0xf4a5a551,
- 0x34e5e5d1, 0x08f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, 0x0c040408, 0x52c7c795, 0x65232346,
- 0x5ec3c39d, 0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f, 0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df,
- 0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36,
- 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952, 0x3ee3e3dd,
- 0x712f2f5e, 0x97848413, 0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179,
- 0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85,
- 0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 0xcf45458a,
- 0x10f9f9e9, 0x06020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, 0xf35151a2, 0xfea3a35d,
- 0xc0404080, 0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1, 0xdfbcbc63, 0xc1b6b677, 0x75dadaaf,
- 0x63212142, 0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3,
- 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8,
- 0xe75d5dba, 0x2b191932, 0x957373e6, 0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54,
- 0xab90903b, 0x8388880b, 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16,
- 0x76dbdbad, 0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8,
- 0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 0x32e7e7d5,
- 0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8, 0xfa5656ac,
- 0x07f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, 0xd5baba6f, 0x887878f0, 0x6f25254a,
- 0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e,
- 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 0xd8484890,
- 0x05030306, 0x01f6f6f7, 0x120e0e1c, 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199,
- 0x271d1d3a, 0xb99e9e27, 0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07,
- 0xa7949433, 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5,
- 0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, 0xc3414182,
- 0xb0999929, 0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c };
-
- private static final int[] T1 = { 0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d, 0x6b6bd6bd,
- 0x6f6fdeb1, 0xc5c59154, 0x30306050, 0x01010203, 0x6767cea9, 0x2b2b567d, 0xfefee719, 0xd7d7b562, 0xabab4de6,
- 0x7676ec9a, 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b,
- 0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, 0xb7b775c2,
- 0xfdfde11c, 0x93933dae, 0x26264c6a, 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 0x3434685c, 0xa5a551f4,
- 0xe5e5d134, 0xf1f1f908, 0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, 0x0404080c, 0xc7c79552, 0x23234665,
- 0xc3c39d5e, 0x18183028, 0x969637a1, 0x05050a0f, 0x9a9a2fb5, 0x07070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d,
- 0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 0x0909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, 0x1b1b362d,
- 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 0x2929527b, 0xe3e3dd3e,
- 0x2f2f5e71, 0x84841397, 0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 0x20204060, 0xfcfce31f, 0xb1b179c8,
- 0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a,
- 0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 0x45458acf,
- 0xf9f9e910, 0x02020406, 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, 0x5151a2f3, 0xa3a35dfe,
- 0x404080c0, 0x8f8f058a, 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, 0xbcbc63df, 0xb6b677c1, 0xdadaaf75,
- 0x21214263, 0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 0xcdcd814c, 0x0c0c1814, 0x13132635, 0xececc32f,
- 0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 0x6464c8ac,
- 0x5d5dbae7, 0x1919322b, 0x7373e695, 0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, 0x22224466, 0x2a2a547e,
- 0x90903bab, 0x88880b83, 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 0xdedea779, 0x5e5ebce2, 0x0b0b161d,
- 0xdbdbad76, 0xe0e0db3b, 0x32326456, 0x3a3a744e, 0x0a0a141e, 0x494992db, 0x06060c0a, 0x2424486c, 0x5c5cb8e4,
- 0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 0xe7e7d532,
- 0xc8c88b43, 0x37376e59, 0x6d6ddab7, 0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4, 0x5656acfa,
- 0xf4f4f307, 0xeaeacf25, 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x08081018, 0xbaba6fd5, 0x7878f088, 0x25254a6f,
- 0x2e2e5c72, 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21,
- 0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, 0x484890d8,
- 0x03030605, 0xf6f6f701, 0x0e0e1c12, 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, 0x86861791, 0xc1c19958,
- 0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, 0x6969d2bb, 0xd9d9a970, 0x8e8e0789,
- 0x949433a7, 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a,
- 0x8c8c038f, 0xa1a159f8, 0x89890980, 0x0d0d1a17, 0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, 0x414182c3,
- 0x999929b0, 0x2d2d5a77, 0x0f0f1e11, 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a };
-
- private static final int[] T2 = { 0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2, 0x6bd6bd6b,
- 0x6fdeb16f, 0xc59154c5, 0x30605030, 0x01020301, 0x67cea967, 0x2b567d2b, 0xfee719fe, 0xd7b562d7, 0xab4de6ab,
- 0x76ec9a76, 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, 0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0,
- 0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, 0xb775c2b7,
- 0xfde11cfd, 0x933dae93, 0x264c6a26, 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 0x34685c34, 0xa551f4a5,
- 0xe5d134e5, 0xf1f908f1, 0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, 0x04080c04, 0xc79552c7, 0x23466523,
- 0xc39d5ec3, 0x18302818, 0x9637a196, 0x050a0f05, 0x9a2fb59a, 0x070e0907, 0x12243612, 0x801b9b80, 0xe2df3de2,
- 0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 0x09121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, 0x1b362d1b,
- 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 0x29527b29, 0xe3dd3ee3,
- 0x2f5e712f, 0x84139784, 0x53a6f553, 0xd1b968d1, 0x00000000, 0xedc12ced, 0x20406020, 0xfce31ffc, 0xb179c8b1,
- 0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf,
- 0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 0x458acf45,
- 0xf9e910f9, 0x02040602, 0x7ffe817f, 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, 0x51a2f351, 0xa35dfea3,
- 0x4080c040, 0x8f058a8f, 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, 0xbc63dfbc, 0xb677c1b6, 0xdaaf75da,
- 0x21426321, 0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 0xcd814ccd, 0x0c18140c, 0x13263513, 0xecc32fec,
- 0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 0x64c8ac64,
- 0x5dbae75d, 0x19322b19, 0x73e69573, 0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, 0x22446622, 0x2a547e2a,
- 0x903bab90, 0x880b8388, 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 0xdea779de, 0x5ebce25e, 0x0b161d0b,
- 0xdbad76db, 0xe0db3be0, 0x32645632, 0x3a744e3a, 0x0a141e0a, 0x4992db49, 0x060c0a06, 0x24486c24, 0x5cb8e45c,
- 0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 0xe7d532e7,
- 0xc88b43c8, 0x376e5937, 0x6ddab76d, 0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c, 0x56acfa56,
- 0xf4f307f4, 0xeacf25ea, 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x08101808, 0xba6fd5ba, 0x78f08878, 0x254a6f25,
- 0x2e5c722e, 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f,
- 0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, 0x4890d848,
- 0x03060503, 0xf6f701f6, 0x0e1c120e, 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, 0x86179186, 0xc19958c1,
- 0x1d3a271d, 0x9e27b99e, 0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, 0x69d2bb69, 0xd9a970d9, 0x8e07898e,
- 0x9433a794, 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf,
- 0x8c038f8c, 0xa159f8a1, 0x89098089, 0x0d1a170d, 0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, 0x4182c341,
- 0x9929b099, 0x2d5a772d, 0x0f1e110f, 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16 };
-
- private static final int[] T3 = { 0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 0xff0df2f2, 0xd6bd6b6b,
- 0xdeb16f6f, 0x9154c5c5, 0x60503030, 0x02030101, 0xcea96767, 0x567d2b2b, 0xe719fefe, 0xb562d7d7, 0x4de6abab,
- 0xec9a7676, 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0,
- 0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, 0x75c2b7b7,
- 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 0x685c3434, 0x51f4a5a5,
- 0xd134e5e5, 0xf908f1f1, 0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, 0x080c0404, 0x9552c7c7, 0x46652323,
- 0x9d5ec3c3, 0x30281818, 0x37a19696, 0x0a0f0505, 0x2fb59a9a, 0x0e090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2,
- 0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, 0x362d1b1b,
- 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 0x527b2929, 0xdd3ee3e3,
- 0x5e712f2f, 0x13978484, 0xa6f55353, 0xb968d1d1, 0x00000000, 0xc12ceded, 0x40602020, 0xe31ffcfc, 0x79c8b1b1,
- 0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf,
- 0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 0x8acf4545,
- 0xe910f9f9, 0x04060202, 0xfe817f7f, 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, 0xa2f35151, 0x5dfea3a3,
- 0x80c04040, 0x058a8f8f, 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, 0x63dfbcbc, 0x77c1b6b6, 0xaf75dada,
- 0x42632121, 0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec,
- 0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 0xc8ac6464,
- 0xbae75d5d, 0x322b1919, 0xe6957373, 0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, 0x44662222, 0x547e2a2a,
- 0x3bab9090, 0x0b838888, 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 0xa779dede, 0xbce25e5e, 0x161d0b0b,
- 0xad76dbdb, 0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 0x92db4949, 0x0c0a0606, 0x486c2424, 0xb8e45c5c,
- 0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 0xd532e7e7,
- 0x8b43c8c8, 0x6e593737, 0xdab76d6d, 0x018c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c, 0xacfa5656,
- 0xf307f4f4, 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, 0x6fd5baba, 0xf0887878, 0x4a6f2525,
- 0x5c722e2e, 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f,
- 0x96dd4b4b, 0x61dcbdbd, 0x0d868b8b, 0x0f858a8a, 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, 0x90d84848,
- 0x06050303, 0xf701f6f6, 0x1c120e0e, 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 0x17918686, 0x9958c1c1,
- 0x3a271d1d, 0x27b99e9e, 0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, 0xd2bb6969, 0xa970d9d9, 0x07898e8e,
- 0x33a79494, 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf,
- 0x038f8c8c, 0x59f8a1a1, 0x09808989, 0x1a170d0d, 0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, 0x82c34141,
- 0x29b09999, 0x5a772d2d, 0x1e110f0f, 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616 };
-
- private static final int[] Tinv0 = { 0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 0xcb6bab3b, 0xf1459d1f,
- 0xab58faac, 0x9303e34b, 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, 0xfcd7e54f, 0xd7cb2ac5, 0x80443526,
- 0x8fa362b5, 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, 0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b,
- 0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, 0x6a89c275,
- 0x78798ef4, 0x6b3e5899, 0xdd71b927, 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 0x184adf63, 0x82311ae5,
- 0x60335197, 0x457f5362, 0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 0x58684870, 0x19fd458f, 0x876cde94,
- 0xb7f87b52, 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3,
- 0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, 0xcdf4da65,
- 0xd5be0506, 0x1f6234d1, 0x8afea6c4, 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 0x39ec830b, 0xaaef6040,
- 0x069f715e, 0x51106ebd, 0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 0xb58d5491, 0x055dc471, 0x6fd40604,
- 0xff155060, 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879,
- 0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000, 0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 0xfbff0efd,
- 0x5638850f, 0x1ed5ae3d, 0x27392d36, 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, 0xb1670a0c, 0x0fe75793,
- 0xd296eeb4, 0x9e919b1b, 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, 0x0aba93e2, 0xe52aa0c0, 0x43e0223c,
- 0x1d171b12, 0x0b0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3,
- 0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 0xcadc31d7,
- 0x10856342, 0x40229713, 0x2011c684, 0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc,
- 0xec52860d, 0xd0e3c177, 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56,
- 0xef903322, 0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f,
- 0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54, 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 0xbe805d9f,
- 0x7c93d069, 0xa92dd56f, 0xb31225cf, 0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 0x097826cd, 0xf418596e,
- 0x01b79aec, 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef, 0xd99be7ba, 0xce366f4a, 0xd4099fea,
- 0xd67cb029, 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, 0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733,
- 0x4a9804f1, 0xf7daec41, 0x0e50cd7f, 0x2ff69117, 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, 0xe3b5d19e,
- 0x1b886a4c, 0xb81f2cc1, 0x7f516546, 0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, 0x5a1d67b3, 0x52d2db92,
- 0x335610e9, 0x1347d66d, 0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, 0xee27a9ce, 0x35c961b7, 0xede51ce1,
- 0x3cb1477a, 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478,
- 0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 0x72c31d16, 0x0c25e2bc, 0x8b493c28, 0x41950dff, 0x7101a839,
- 0xdeb30c08, 0x9ce4b4d8, 0x90c15664, 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0 };
-
- private static final int[] Tinv1 = { 0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 0x6bab3bcb, 0x459d1ff1,
- 0x58faacab, 0x03e34b93, 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, 0xd7e54ffc, 0xcb2ac5d7, 0x44352680,
- 0xa362b58f, 0x5ab1de49, 0x1bba2567, 0x0eea4598, 0xc0fe5de1, 0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6,
- 0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, 0x89c2756a,
- 0x798ef478, 0x3e58996b, 0x71b927dd, 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, 0x4adf6318, 0x311ae582,
- 0x33519760, 0x7f536245, 0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, 0x68487058, 0xfd458f19, 0x6cde9487,
- 0xf87b52b7, 0xd373ab23, 0x024b72e2, 0x8f1fe357, 0xab55662a, 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x0837d3a5,
- 0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, 0xf4da65cd,
- 0xbe0506d5, 0x6234d11f, 0xfea6c48a, 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 0xec830b39, 0xef6040aa,
- 0x9f715e06, 0x106ebd51, 0x8a213ef9, 0x06dd963d, 0x053eddae, 0xbde64d46, 0x8d5491b5, 0x5dc47105, 0xd406046f,
- 0x155060ff, 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db,
- 0x0a7ca147, 0x0f427ce9, 0x1e84f8c9, 0x00000000, 0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 0xff0efdfb,
- 0x38850f56, 0xd5ae3d1e, 0x392d3627, 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, 0x670a0cb1, 0xe757930f,
- 0x96eeb4d2, 0x919b1b9e, 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, 0xba93e20a, 0x2aa0c0e5, 0xe0223c43,
- 0x171b121d, 0x0d090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 0x19f15785, 0x0775af4c, 0xdd99eebb, 0x607fa3fd,
- 0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 0xdc31d7ca,
- 0x85634210, 0x22971340, 0x11c68420, 0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3,
- 0x52860dec, 0xe3c177d0, 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8,
- 0x903322ef, 0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0x0bd49836, 0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4,
- 0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 0x805d9fbe,
- 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 0x7826cd09, 0x18596ef4,
- 0xb79aec01, 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, 0x9be7bad9, 0x366f4ace, 0x099fead4,
- 0x7cb029d6, 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, 0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315,
- 0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x0496e4df, 0xb5d19ee3,
- 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, 0x1d67b35a, 0xd2db9252,
- 0x5610e933, 0x47d66d13, 0x61d79a8c, 0x0ca1377a, 0x14f8598e, 0x3c13eb89, 0x27a9ceee, 0xc961b735, 0xe51ce1ed,
- 0xb1477a3c, 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886,
- 0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, 0x01a83971,
- 0xb30c08de, 0xe4b4d89c, 0xc1566490, 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042 };
-
- private static final int[] Tinv2 = { 0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 0xab3bcb6b, 0x9d1ff145,
- 0xfaacab58, 0xe34b9303, 0x302055fa, 0x76adf66d, 0xcc889176, 0x02f5254c, 0xe54ffcd7, 0x2ac5d7cb, 0x35268044,
- 0x62b58fa3, 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, 0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9,
- 0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, 0xc2756a89,
- 0x8ef47879, 0x58996b3e, 0xb927dd71, 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, 0xdf63184a, 0x1ae58231,
- 0x51976033, 0x5362457f, 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x08f9942b, 0x48705868, 0x458f19fd, 0xde94876c,
- 0x7b52b7f8, 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508,
- 0x2830f287, 0xbf23b2a5, 0x0302ba6a, 0x16ed5c82, 0xcf8a2b1c, 0x79a792b4, 0x07f3f0f2, 0x694ea1e2, 0xda65cdf4,
- 0x0506d5be, 0x34d11f62, 0xa6c48afe, 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 0x830b39ec, 0x6040aaef,
- 0x715e069f, 0x6ebd5110, 0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 0x5491b58d, 0xc471055d, 0x06046fd4,
- 0x5060ff15, 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee,
- 0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x00000000, 0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 0x0efdfbff,
- 0x850f5638, 0xae3d1ed5, 0x2d362739, 0x0f0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, 0x0a0cb167, 0x57930fe7,
- 0xeeb4d296, 0x9b1b9e91, 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, 0x93e20aba, 0xa0c0e52a, 0x223c43e0,
- 0x1b121d17, 0x090e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60,
- 0x01f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 0x31d7cadc,
- 0x63421085, 0x97134022, 0xc6842011, 0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330,
- 0x860dec52, 0xc177d0e3, 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c,
- 0x3322ef90, 0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf,
- 0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 0x5d9fbe80,
- 0xd0697c93, 0xd56fa92d, 0x25cfb312, 0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978, 0x596ef418,
- 0x9aec01b7, 0x4f83a89a, 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, 0xe7bad99b, 0x6f4ace36, 0x9fead409,
- 0xb029d67c, 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, 0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8,
- 0x04f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, 0xd19ee3b5,
- 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0x0bfb2e41, 0x67b35a1d, 0xdb9252d2,
- 0x10e93356, 0xd66d1347, 0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, 0xa9ceee27, 0x61b735c9, 0x1ce1ede5,
- 0x477a3cb1, 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db,
- 0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0x0dff4195, 0xa8397101,
- 0x0c08deb3, 0xb4d89ce4, 0x566490c1, 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257 };
-
- private static final int[] Tinv3 = { 0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 0x3bcb6bab, 0x1ff1459d,
- 0xacab58fa, 0x4b9303e3, 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435,
- 0xb58fa362, 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, 0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3,
- 0x03e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, 0x756a89c2,
- 0xf478798e, 0x996b3e58, 0x27dd71b9, 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, 0x63184adf, 0xe582311a,
- 0x97603351, 0x62457f53, 0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 0x70586848, 0x8f19fd45, 0x94876cde,
- 0x52b7f87b, 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837,
- 0x30f28728, 0x23b2a5bf, 0x02ba6a03, 0xed5c8216, 0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, 0x65cdf4da,
- 0x06d5be05, 0xd11f6234, 0xc48afea6, 0x349d532e, 0xa2a055f3, 0x0532e18a, 0xa475ebf6, 0x0b39ec83, 0x40aaef60,
- 0x5e069f71, 0xbd51106e, 0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 0x91b58d54, 0x71055dc4, 0x046fd406,
- 0x60ff1550, 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, 0xb0bd42e8, 0x07888b89, 0xe7385b19, 0x79dbeec8,
- 0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x00000000, 0x09838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 0xfdfbff0e,
- 0x0f563885, 0x3d1ed5ae, 0x3627392d, 0x0a64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, 0x0cb1670a, 0x930fe757,
- 0xb4d296ee, 0x1b9e919b, 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, 0xe20aba93, 0xc0e52aa0, 0x3c43e022,
- 0x121d171b, 0x0e0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f,
- 0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, 0xd7cadc31,
- 0x42108563, 0x13402297, 0x842011c6, 0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, 0x1d4b2f9e, 0xdcf330b2,
- 0x0dec5286, 0x77d0e3c1, 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d,
- 0x22ef9033, 0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad,
- 0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 0x9fbe805d,
- 0x697c93d0, 0x6fa92dd5, 0xcfb31225, 0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 0xcd097826, 0x6ef41859,
- 0xec01b79a, 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, 0xbad99be7, 0x4ace366f, 0xead4099f,
- 0x29d67cb0, 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, 0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7,
- 0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, 0x9ee3b5d1,
- 0x4c1b886a, 0xc1b81f2c, 0x467f5165, 0x9d04ea5e, 0x015d358c, 0xfa737487, 0xfb2e410b, 0xb35a1d67, 0x9252d2db,
- 0xe9335610, 0x6d1347d6, 0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, 0xceee27a9, 0xb735c961, 0xe1ede51c,
- 0x7a3cb147, 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44,
- 0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, 0x397101a8,
- 0x08deb30c, 0xd89ce4b4, 0x6490c156, 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8 };
-
- private final int shift(int r, int shift)
- {
- return (((r >>> shift) | (r << (32 - shift))));
- }
-
- /* multiply four bytes in GF(2^8) by 'x' {02} in parallel */
-
- private static final int m1 = 0x80808080;
- private static final int m2 = 0x7f7f7f7f;
- private static final int m3 = 0x0000001b;
-
- private final int FFmulX(int x)
- {
- return (((x & m2) << 1) ^ (((x & m1) >>> 7) * m3));
- }
-
- /*
- * The following defines provide alternative definitions of FFmulX that
- * might give improved performance if a fast 32-bit multiply is not
- * available.
- *
- * private int FFmulX(int x) { int u = x & m1; u |= (u >> 1); return ((x &
- * m2) < < 1) ^ ((u >>> 3) | (u >>> 6)); } private static final int m4 =
- * 0x1b1b1b1b; private int FFmulX(int x) { int u = x & m1; return ((x & m2) < <
- * 1) ^ ((u - (u >>> 7)) & m4); }
- *
- */
-
- private final int inv_mcol(int x)
- {
- int f2 = FFmulX(x);
- int f4 = FFmulX(f2);
- int f8 = FFmulX(f4);
- int f9 = x ^ f8;
-
- return f2 ^ f4 ^ f8 ^ shift(f2 ^ f9, 8) ^ shift(f4 ^ f9, 16) ^ shift(f9, 24);
- }
-
- private final int subWord(int x)
- {
- return (S[x & 255] & 255 | ((S[(x >> 8) & 255] & 255) << 8) | ((S[(x >> 16) & 255] & 255) << 16) | S[(x >> 24) & 255] << 24);
- }
-
- /**
- * Calculate the necessary round keys The number of calculations depends on
- * key size and block size AES specified a fixed block size of 128 bits and
- * key sizes 128/192/256 bits This code is written assuming those are the
- * only possible values
- */
- private final int[][] generateWorkingKey(byte[] key, boolean forEncryption)
- {
- int KC = key.length / 4; // key length in words
- int t;
-
- if (((KC != 4) && (KC != 6) && (KC != 8)) || ((KC * 4) != key.length))
- {
- throw new IllegalArgumentException("Key length not 128/192/256 bits.");
- }
-
- ROUNDS = KC + 6; // This is not always true for the generalized
- // Rijndael that allows larger block sizes
- int[][] W = new int[ROUNDS + 1][4]; // 4 words in a block
-
- //
- // copy the key into the round key array
- //
-
- t = 0;
- for (int i = 0; i < key.length; t++)
- {
- W[t >> 2][t & 3] = (key[i] & 0xff) | ((key[i + 1] & 0xff) << 8) | ((key[i + 2] & 0xff) << 16)
- | (key[i + 3] << 24);
- i += 4;
- }
-
- //
- // while not enough round key material calculated
- // calculate new values
- //
- int k = (ROUNDS + 1) << 2;
- for (int i = KC; (i < k); i++)
- {
- int temp = W[(i - 1) >> 2][(i - 1) & 3];
- if ((i % KC) == 0)
- {
- temp = subWord(shift(temp, 8)) ^ rcon[(i / KC) - 1];
- }
- else if ((KC > 6) && ((i % KC) == 4))
- {
- temp = subWord(temp);
- }
-
- W[i >> 2][i & 3] = W[(i - KC) >> 2][(i - KC) & 3] ^ temp;
- }
-
- if (!forEncryption)
- {
- for (int j = 1; j < ROUNDS; j++)
- {
- for (int i = 0; i < 4; i++)
- {
- W[j][i] = inv_mcol(W[j][i]);
- }
- }
- }
-
- return W;
- }
-
- private int ROUNDS;
- private int[][] WorkingKey = null;
- private int C0, C1, C2, C3;
- private boolean doEncrypt;
-
- private static final int BLOCK_SIZE = 16;
-
- /**
- * default constructor - 128 bit block size.
- */
- public AES()
- {
- }
-
- /**
- * initialise an AES cipher.
- *
- * @param forEncryption
- * whether or not we are for encryption.
- * @param key
- * the key required to set up the cipher.
- * @exception IllegalArgumentException
- * if the params argument is inappropriate.
- */
-
- public final void init(boolean forEncryption, byte[] key)
- {
- WorkingKey = generateWorkingKey(key, forEncryption);
- this.doEncrypt = forEncryption;
- }
-
- public final String getAlgorithmName()
- {
- return "AES";
- }
-
- public final int getBlockSize()
- {
- return BLOCK_SIZE;
- }
-
- public final int processBlock(byte[] in, int inOff, byte[] out, int outOff)
- {
- if (WorkingKey == null)
- {
- throw new IllegalStateException("AES engine not initialised");
- }
-
- if ((inOff + (32 / 2)) > in.length)
- {
- throw new IllegalArgumentException("input buffer too short");
- }
-
- if ((outOff + (32 / 2)) > out.length)
- {
- throw new IllegalArgumentException("output buffer too short");
- }
-
- if (doEncrypt)
- {
- unpackBlock(in, inOff);
- encryptBlock(WorkingKey);
- packBlock(out, outOff);
- }
- else
- {
- unpackBlock(in, inOff);
- decryptBlock(WorkingKey);
- packBlock(out, outOff);
- }
-
- return BLOCK_SIZE;
- }
-
- public final void reset()
- {
- }
-
- private final void unpackBlock(byte[] bytes, int off)
- {
- int index = off;
-
- C0 = (bytes[index++] & 0xff);
- C0 |= (bytes[index++] & 0xff) << 8;
- C0 |= (bytes[index++] & 0xff) << 16;
- C0 |= bytes[index++] << 24;
-
- C1 = (bytes[index++] & 0xff);
- C1 |= (bytes[index++] & 0xff) << 8;
- C1 |= (bytes[index++] & 0xff) << 16;
- C1 |= bytes[index++] << 24;
-
- C2 = (bytes[index++] & 0xff);
- C2 |= (bytes[index++] & 0xff) << 8;
- C2 |= (bytes[index++] & 0xff) << 16;
- C2 |= bytes[index++] << 24;
-
- C3 = (bytes[index++] & 0xff);
- C3 |= (bytes[index++] & 0xff) << 8;
- C3 |= (bytes[index++] & 0xff) << 16;
- C3 |= bytes[index++] << 24;
- }
-
- private final void packBlock(byte[] bytes, int off)
- {
- int index = off;
-
- bytes[index++] = (byte) C0;
- bytes[index++] = (byte) (C0 >> 8);
- bytes[index++] = (byte) (C0 >> 16);
- bytes[index++] = (byte) (C0 >> 24);
-
- bytes[index++] = (byte) C1;
- bytes[index++] = (byte) (C1 >> 8);
- bytes[index++] = (byte) (C1 >> 16);
- bytes[index++] = (byte) (C1 >> 24);
-
- bytes[index++] = (byte) C2;
- bytes[index++] = (byte) (C2 >> 8);
- bytes[index++] = (byte) (C2 >> 16);
- bytes[index++] = (byte) (C2 >> 24);
-
- bytes[index++] = (byte) C3;
- bytes[index++] = (byte) (C3 >> 8);
- bytes[index++] = (byte) (C3 >> 16);
- bytes[index++] = (byte) (C3 >> 24);
- }
-
- private final void encryptBlock(int[][] KW)
- {
- int r, r0, r1, r2, r3;
-
- C0 ^= KW[0][0];
- C1 ^= KW[0][1];
- C2 ^= KW[0][2];
- C3 ^= KW[0][3];
-
- for (r = 1; r < ROUNDS - 1;)
- {
- r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0];
- r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1];
- r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2];
- r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3];
- C0 = T0[r0 & 255] ^ T1[(r1 >> 8) & 255] ^ T2[(r2 >> 16) & 255] ^ T3[(r3 >> 24) & 255] ^ KW[r][0];
- C1 = T0[r1 & 255] ^ T1[(r2 >> 8) & 255] ^ T2[(r3 >> 16) & 255] ^ T3[(r0 >> 24) & 255] ^ KW[r][1];
- C2 = T0[r2 & 255] ^ T1[(r3 >> 8) & 255] ^ T2[(r0 >> 16) & 255] ^ T3[(r1 >> 24) & 255] ^ KW[r][2];
- C3 = T0[r3 & 255] ^ T1[(r0 >> 8) & 255] ^ T2[(r1 >> 16) & 255] ^ T3[(r2 >> 24) & 255] ^ KW[r++][3];
- }
-
- r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0];
- r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1];
- r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2];
- r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3];
-
- // the final round's table is a simple function of S so we don't use a
- // whole other four tables for it
-
- C0 = (S[r0 & 255] & 255) ^ ((S[(r1 >> 8) & 255] & 255) << 8) ^ ((S[(r2 >> 16) & 255] & 255) << 16)
- ^ (S[(r3 >> 24) & 255] << 24) ^ KW[r][0];
- C1 = (S[r1 & 255] & 255) ^ ((S[(r2 >> 8) & 255] & 255) << 8) ^ ((S[(r3 >> 16) & 255] & 255) << 16)
- ^ (S[(r0 >> 24) & 255] << 24) ^ KW[r][1];
- C2 = (S[r2 & 255] & 255) ^ ((S[(r3 >> 8) & 255] & 255) << 8) ^ ((S[(r0 >> 16) & 255] & 255) << 16)
- ^ (S[(r1 >> 24) & 255] << 24) ^ KW[r][2];
- C3 = (S[r3 & 255] & 255) ^ ((S[(r0 >> 8) & 255] & 255) << 8) ^ ((S[(r1 >> 16) & 255] & 255) << 16)
- ^ (S[(r2 >> 24) & 255] << 24) ^ KW[r][3];
-
- }
-
- private final void decryptBlock(int[][] KW)
- {
- int r, r0, r1, r2, r3;
-
- C0 ^= KW[ROUNDS][0];
- C1 ^= KW[ROUNDS][1];
- C2 ^= KW[ROUNDS][2];
- C3 ^= KW[ROUNDS][3];
-
- for (r = ROUNDS - 1; r > 1;)
- {
- r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255]
- ^ KW[r][0];
- r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255]
- ^ KW[r][1];
- r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255]
- ^ KW[r][2];
- r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255]
- ^ KW[r--][3];
- C0 = Tinv0[r0 & 255] ^ Tinv1[(r3 >> 8) & 255] ^ Tinv2[(r2 >> 16) & 255] ^ Tinv3[(r1 >> 24) & 255]
- ^ KW[r][0];
- C1 = Tinv0[r1 & 255] ^ Tinv1[(r0 >> 8) & 255] ^ Tinv2[(r3 >> 16) & 255] ^ Tinv3[(r2 >> 24) & 255]
- ^ KW[r][1];
- C2 = Tinv0[r2 & 255] ^ Tinv1[(r1 >> 8) & 255] ^ Tinv2[(r0 >> 16) & 255] ^ Tinv3[(r3 >> 24) & 255]
- ^ KW[r][2];
- C3 = Tinv0[r3 & 255] ^ Tinv1[(r2 >> 8) & 255] ^ Tinv2[(r1 >> 16) & 255] ^ Tinv3[(r0 >> 24) & 255]
- ^ KW[r--][3];
- }
-
- r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255] ^ KW[r][0];
- r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255] ^ KW[r][1];
- r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255] ^ KW[r][2];
- r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255] ^ KW[r--][3];
-
- // the final round's table is a simple function of Si so we don't use a
- // whole other four tables for it
-
- C0 = (Si[r0 & 255] & 255) ^ ((Si[(r3 >> 8) & 255] & 255) << 8) ^ ((Si[(r2 >> 16) & 255] & 255) << 16)
- ^ (Si[(r1 >> 24) & 255] << 24) ^ KW[0][0];
- C1 = (Si[r1 & 255] & 255) ^ ((Si[(r0 >> 8) & 255] & 255) << 8) ^ ((Si[(r3 >> 16) & 255] & 255) << 16)
- ^ (Si[(r2 >> 24) & 255] << 24) ^ KW[0][1];
- C2 = (Si[r2 & 255] & 255) ^ ((Si[(r1 >> 8) & 255] & 255) << 8) ^ ((Si[(r0 >> 16) & 255] & 255) << 16)
- ^ (Si[(r3 >> 24) & 255] << 24) ^ KW[0][2];
- C3 = (Si[r3 & 255] & 255) ^ ((Si[(r2 >> 8) & 255] & 255) << 8) ^ ((Si[(r1 >> 16) & 255] & 255) << 16)
- ^ (Si[(r0 >> 24) & 255] << 24) ^ KW[0][3];
- }
-
- public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- processBlock(src, srcoff, dst, dstoff);
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +/* + This file was shamelessly taken from the Bouncy Castle Crypto package. + Their licence file states the following: + + Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle + (http://www.bouncycastle.org) + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + */ + +/** + * An implementation of the AES (Rijndael), from FIPS-197. + * <p> + * For further details see: <a + * href="http://csrc.nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/ + * </a>. + * + * This implementation is based on optimizations from Dr. Brian Gladman's paper + * and C code at <a + * href="http://fp.gladman.plus.com/cryptography_technology/rijndael/">http://fp.gladman.plus.com/cryptography_technology/rijndael/ + * </a> + * + * There are three levels of tradeoff of speed vs memory Because java has no + * preprocessor, they are written as three separate classes from which to choose + * + * The fastest uses 8Kbytes of static tables to precompute round calculations, 4 + * 256 word tables for encryption and 4 for decryption. + * + * The middle performance version uses only one 256 word table for each, for a + * total of 2Kbytes, adding 12 rotate operations per round to compute the values + * contained in the other tables from the contents of the first + * + * The slowest version uses no static tables at all and computes the values in + * each round + * <p> + * This file contains the fast version with 8Kbytes of static tables for round + * precomputation + * + * @author See comments in the source file + * @version $Id: AES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class AES implements BlockCipher +{ + // The S box + private static final byte[] S = { (byte) 99, (byte) 124, (byte) 119, (byte) 123, (byte) 242, (byte) 107, + (byte) 111, (byte) 197, (byte) 48, (byte) 1, (byte) 103, (byte) 43, (byte) 254, (byte) 215, (byte) 171, + (byte) 118, (byte) 202, (byte) 130, (byte) 201, (byte) 125, (byte) 250, (byte) 89, (byte) 71, (byte) 240, + (byte) 173, (byte) 212, (byte) 162, (byte) 175, (byte) 156, (byte) 164, (byte) 114, (byte) 192, (byte) 183, + (byte) 253, (byte) 147, (byte) 38, (byte) 54, (byte) 63, (byte) 247, (byte) 204, (byte) 52, (byte) 165, + (byte) 229, (byte) 241, (byte) 113, (byte) 216, (byte) 49, (byte) 21, (byte) 4, (byte) 199, (byte) 35, + (byte) 195, (byte) 24, (byte) 150, (byte) 5, (byte) 154, (byte) 7, (byte) 18, (byte) 128, (byte) 226, + (byte) 235, (byte) 39, (byte) 178, (byte) 117, (byte) 9, (byte) 131, (byte) 44, (byte) 26, (byte) 27, + (byte) 110, (byte) 90, (byte) 160, (byte) 82, (byte) 59, (byte) 214, (byte) 179, (byte) 41, (byte) 227, + (byte) 47, (byte) 132, (byte) 83, (byte) 209, (byte) 0, (byte) 237, (byte) 32, (byte) 252, (byte) 177, + (byte) 91, (byte) 106, (byte) 203, (byte) 190, (byte) 57, (byte) 74, (byte) 76, (byte) 88, (byte) 207, + (byte) 208, (byte) 239, (byte) 170, (byte) 251, (byte) 67, (byte) 77, (byte) 51, (byte) 133, (byte) 69, + (byte) 249, (byte) 2, (byte) 127, (byte) 80, (byte) 60, (byte) 159, (byte) 168, (byte) 81, (byte) 163, + (byte) 64, (byte) 143, (byte) 146, (byte) 157, (byte) 56, (byte) 245, (byte) 188, (byte) 182, (byte) 218, + (byte) 33, (byte) 16, (byte) 255, (byte) 243, (byte) 210, (byte) 205, (byte) 12, (byte) 19, (byte) 236, + (byte) 95, (byte) 151, (byte) 68, (byte) 23, (byte) 196, (byte) 167, (byte) 126, (byte) 61, (byte) 100, + (byte) 93, (byte) 25, (byte) 115, (byte) 96, (byte) 129, (byte) 79, (byte) 220, (byte) 34, (byte) 42, + (byte) 144, (byte) 136, (byte) 70, (byte) 238, (byte) 184, (byte) 20, (byte) 222, (byte) 94, (byte) 11, + (byte) 219, (byte) 224, (byte) 50, (byte) 58, (byte) 10, (byte) 73, (byte) 6, (byte) 36, (byte) 92, + (byte) 194, (byte) 211, (byte) 172, (byte) 98, (byte) 145, (byte) 149, (byte) 228, (byte) 121, (byte) 231, + (byte) 200, (byte) 55, (byte) 109, (byte) 141, (byte) 213, (byte) 78, (byte) 169, (byte) 108, (byte) 86, + (byte) 244, (byte) 234, (byte) 101, (byte) 122, (byte) 174, (byte) 8, (byte) 186, (byte) 120, (byte) 37, + (byte) 46, (byte) 28, (byte) 166, (byte) 180, (byte) 198, (byte) 232, (byte) 221, (byte) 116, (byte) 31, + (byte) 75, (byte) 189, (byte) 139, (byte) 138, (byte) 112, (byte) 62, (byte) 181, (byte) 102, (byte) 72, + (byte) 3, (byte) 246, (byte) 14, (byte) 97, (byte) 53, (byte) 87, (byte) 185, (byte) 134, (byte) 193, + (byte) 29, (byte) 158, (byte) 225, (byte) 248, (byte) 152, (byte) 17, (byte) 105, (byte) 217, (byte) 142, + (byte) 148, (byte) 155, (byte) 30, (byte) 135, (byte) 233, (byte) 206, (byte) 85, (byte) 40, (byte) 223, + (byte) 140, (byte) 161, (byte) 137, (byte) 13, (byte) 191, (byte) 230, (byte) 66, (byte) 104, (byte) 65, + (byte) 153, (byte) 45, (byte) 15, (byte) 176, (byte) 84, (byte) 187, (byte) 22, }; + + // The inverse S-box + private static final byte[] Si = { (byte) 82, (byte) 9, (byte) 106, (byte) 213, (byte) 48, (byte) 54, (byte) 165, + (byte) 56, (byte) 191, (byte) 64, (byte) 163, (byte) 158, (byte) 129, (byte) 243, (byte) 215, (byte) 251, + (byte) 124, (byte) 227, (byte) 57, (byte) 130, (byte) 155, (byte) 47, (byte) 255, (byte) 135, (byte) 52, + (byte) 142, (byte) 67, (byte) 68, (byte) 196, (byte) 222, (byte) 233, (byte) 203, (byte) 84, (byte) 123, + (byte) 148, (byte) 50, (byte) 166, (byte) 194, (byte) 35, (byte) 61, (byte) 238, (byte) 76, (byte) 149, + (byte) 11, (byte) 66, (byte) 250, (byte) 195, (byte) 78, (byte) 8, (byte) 46, (byte) 161, (byte) 102, + (byte) 40, (byte) 217, (byte) 36, (byte) 178, (byte) 118, (byte) 91, (byte) 162, (byte) 73, (byte) 109, + (byte) 139, (byte) 209, (byte) 37, (byte) 114, (byte) 248, (byte) 246, (byte) 100, (byte) 134, (byte) 104, + (byte) 152, (byte) 22, (byte) 212, (byte) 164, (byte) 92, (byte) 204, (byte) 93, (byte) 101, (byte) 182, + (byte) 146, (byte) 108, (byte) 112, (byte) 72, (byte) 80, (byte) 253, (byte) 237, (byte) 185, (byte) 218, + (byte) 94, (byte) 21, (byte) 70, (byte) 87, (byte) 167, (byte) 141, (byte) 157, (byte) 132, (byte) 144, + (byte) 216, (byte) 171, (byte) 0, (byte) 140, (byte) 188, (byte) 211, (byte) 10, (byte) 247, (byte) 228, + (byte) 88, (byte) 5, (byte) 184, (byte) 179, (byte) 69, (byte) 6, (byte) 208, (byte) 44, (byte) 30, + (byte) 143, (byte) 202, (byte) 63, (byte) 15, (byte) 2, (byte) 193, (byte) 175, (byte) 189, (byte) 3, + (byte) 1, (byte) 19, (byte) 138, (byte) 107, (byte) 58, (byte) 145, (byte) 17, (byte) 65, (byte) 79, + (byte) 103, (byte) 220, (byte) 234, (byte) 151, (byte) 242, (byte) 207, (byte) 206, (byte) 240, (byte) 180, + (byte) 230, (byte) 115, (byte) 150, (byte) 172, (byte) 116, (byte) 34, (byte) 231, (byte) 173, (byte) 53, + (byte) 133, (byte) 226, (byte) 249, (byte) 55, (byte) 232, (byte) 28, (byte) 117, (byte) 223, (byte) 110, + (byte) 71, (byte) 241, (byte) 26, (byte) 113, (byte) 29, (byte) 41, (byte) 197, (byte) 137, (byte) 111, + (byte) 183, (byte) 98, (byte) 14, (byte) 170, (byte) 24, (byte) 190, (byte) 27, (byte) 252, (byte) 86, + (byte) 62, (byte) 75, (byte) 198, (byte) 210, (byte) 121, (byte) 32, (byte) 154, (byte) 219, (byte) 192, + (byte) 254, (byte) 120, (byte) 205, (byte) 90, (byte) 244, (byte) 31, (byte) 221, (byte) 168, (byte) 51, + (byte) 136, (byte) 7, (byte) 199, (byte) 49, (byte) 177, (byte) 18, (byte) 16, (byte) 89, (byte) 39, + (byte) 128, (byte) 236, (byte) 95, (byte) 96, (byte) 81, (byte) 127, (byte) 169, (byte) 25, (byte) 181, + (byte) 74, (byte) 13, (byte) 45, (byte) 229, (byte) 122, (byte) 159, (byte) 147, (byte) 201, (byte) 156, + (byte) 239, (byte) 160, (byte) 224, (byte) 59, (byte) 77, (byte) 174, (byte) 42, (byte) 245, (byte) 176, + (byte) 200, (byte) 235, (byte) 187, (byte) 60, (byte) 131, (byte) 83, (byte) 153, (byte) 97, (byte) 23, + (byte) 43, (byte) 4, (byte) 126, (byte) 186, (byte) 119, (byte) 214, (byte) 38, (byte) 225, (byte) 105, + (byte) 20, (byte) 99, (byte) 85, (byte) 33, (byte) 12, (byte) 125, }; + + // vector used in calculating key schedule (powers of x in GF(256)) + private static final int[] rcon = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, + 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91 }; + + // precomputation tables of calculations for rounds + private static final int[] T0 = { 0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff, 0xbd6b6bd6, + 0xb16f6fde, 0x54c5c591, 0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d, + 0x9a7676ec, 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb, + 0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, 0xc2b7b775, + 0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83, 0x5c343468, 0xf4a5a551, + 0x34e5e5d1, 0x08f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, 0x0c040408, 0x52c7c795, 0x65232346, + 0x5ec3c39d, 0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f, 0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df, + 0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36, + 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952, 0x3ee3e3dd, + 0x712f2f5e, 0x97848413, 0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179, + 0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85, + 0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 0xcf45458a, + 0x10f9f9e9, 0x06020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, 0xf35151a2, 0xfea3a35d, + 0xc0404080, 0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1, 0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, + 0x63212142, 0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3, + 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8, + 0xe75d5dba, 0x2b191932, 0x957373e6, 0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54, + 0xab90903b, 0x8388880b, 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, + 0x76dbdbad, 0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8, + 0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 0x32e7e7d5, + 0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8, 0xfa5656ac, + 0x07f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, 0xd5baba6f, 0x887878f0, 0x6f25254a, + 0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, + 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 0xd8484890, + 0x05030306, 0x01f6f6f7, 0x120e0e1c, 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199, + 0x271d1d3a, 0xb99e9e27, 0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07, + 0xa7949433, 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5, + 0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, 0xc3414182, + 0xb0999929, 0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c }; + + private static final int[] T1 = { 0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d, 0x6b6bd6bd, + 0x6f6fdeb1, 0xc5c59154, 0x30306050, 0x01010203, 0x6767cea9, 0x2b2b567d, 0xfefee719, 0xd7d7b562, 0xabab4de6, + 0x7676ec9a, 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b, + 0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, 0xb7b775c2, + 0xfdfde11c, 0x93933dae, 0x26264c6a, 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 0x3434685c, 0xa5a551f4, + 0xe5e5d134, 0xf1f1f908, 0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, 0x0404080c, 0xc7c79552, 0x23234665, + 0xc3c39d5e, 0x18183028, 0x969637a1, 0x05050a0f, 0x9a9a2fb5, 0x07070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d, + 0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 0x0909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, 0x1b1b362d, + 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 0x2929527b, 0xe3e3dd3e, + 0x2f2f5e71, 0x84841397, 0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 0x20204060, 0xfcfce31f, 0xb1b179c8, + 0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a, + 0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 0x45458acf, + 0xf9f9e910, 0x02020406, 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, 0x5151a2f3, 0xa3a35dfe, + 0x404080c0, 0x8f8f058a, 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, 0xbcbc63df, 0xb6b677c1, 0xdadaaf75, + 0x21214263, 0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 0xcdcd814c, 0x0c0c1814, 0x13132635, 0xececc32f, + 0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 0x6464c8ac, + 0x5d5dbae7, 0x1919322b, 0x7373e695, 0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, 0x22224466, 0x2a2a547e, + 0x90903bab, 0x88880b83, 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 0xdedea779, 0x5e5ebce2, 0x0b0b161d, + 0xdbdbad76, 0xe0e0db3b, 0x32326456, 0x3a3a744e, 0x0a0a141e, 0x494992db, 0x06060c0a, 0x2424486c, 0x5c5cb8e4, + 0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 0xe7e7d532, + 0xc8c88b43, 0x37376e59, 0x6d6ddab7, 0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4, 0x5656acfa, + 0xf4f4f307, 0xeaeacf25, 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x08081018, 0xbaba6fd5, 0x7878f088, 0x25254a6f, + 0x2e2e5c72, 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21, + 0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, 0x484890d8, + 0x03030605, 0xf6f6f701, 0x0e0e1c12, 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, 0x86861791, 0xc1c19958, + 0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, 0x6969d2bb, 0xd9d9a970, 0x8e8e0789, + 0x949433a7, 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a, + 0x8c8c038f, 0xa1a159f8, 0x89890980, 0x0d0d1a17, 0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, 0x414182c3, + 0x999929b0, 0x2d2d5a77, 0x0f0f1e11, 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a }; + + private static final int[] T2 = { 0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2, 0x6bd6bd6b, + 0x6fdeb16f, 0xc59154c5, 0x30605030, 0x01020301, 0x67cea967, 0x2b567d2b, 0xfee719fe, 0xd7b562d7, 0xab4de6ab, + 0x76ec9a76, 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, 0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0, + 0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, 0xb775c2b7, + 0xfde11cfd, 0x933dae93, 0x264c6a26, 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 0x34685c34, 0xa551f4a5, + 0xe5d134e5, 0xf1f908f1, 0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, 0x04080c04, 0xc79552c7, 0x23466523, + 0xc39d5ec3, 0x18302818, 0x9637a196, 0x050a0f05, 0x9a2fb59a, 0x070e0907, 0x12243612, 0x801b9b80, 0xe2df3de2, + 0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 0x09121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, 0x1b362d1b, + 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 0x29527b29, 0xe3dd3ee3, + 0x2f5e712f, 0x84139784, 0x53a6f553, 0xd1b968d1, 0x00000000, 0xedc12ced, 0x20406020, 0xfce31ffc, 0xb179c8b1, + 0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf, + 0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 0x458acf45, + 0xf9e910f9, 0x02040602, 0x7ffe817f, 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, 0x51a2f351, 0xa35dfea3, + 0x4080c040, 0x8f058a8f, 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, 0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, + 0x21426321, 0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 0xcd814ccd, 0x0c18140c, 0x13263513, 0xecc32fec, + 0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 0x64c8ac64, + 0x5dbae75d, 0x19322b19, 0x73e69573, 0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, 0x22446622, 0x2a547e2a, + 0x903bab90, 0x880b8388, 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 0xdea779de, 0x5ebce25e, 0x0b161d0b, + 0xdbad76db, 0xe0db3be0, 0x32645632, 0x3a744e3a, 0x0a141e0a, 0x4992db49, 0x060c0a06, 0x24486c24, 0x5cb8e45c, + 0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 0xe7d532e7, + 0xc88b43c8, 0x376e5937, 0x6ddab76d, 0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c, 0x56acfa56, + 0xf4f307f4, 0xeacf25ea, 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x08101808, 0xba6fd5ba, 0x78f08878, 0x254a6f25, + 0x2e5c722e, 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f, + 0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, 0x4890d848, + 0x03060503, 0xf6f701f6, 0x0e1c120e, 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, 0x86179186, 0xc19958c1, + 0x1d3a271d, 0x9e27b99e, 0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, 0x69d2bb69, 0xd9a970d9, 0x8e07898e, + 0x9433a794, 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf, + 0x8c038f8c, 0xa159f8a1, 0x89098089, 0x0d1a170d, 0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, 0x4182c341, + 0x9929b099, 0x2d5a772d, 0x0f1e110f, 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16 }; + + private static final int[] T3 = { 0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 0xff0df2f2, 0xd6bd6b6b, + 0xdeb16f6f, 0x9154c5c5, 0x60503030, 0x02030101, 0xcea96767, 0x567d2b2b, 0xe719fefe, 0xb562d7d7, 0x4de6abab, + 0xec9a7676, 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0, + 0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, 0x75c2b7b7, + 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 0x685c3434, 0x51f4a5a5, + 0xd134e5e5, 0xf908f1f1, 0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, 0x080c0404, 0x9552c7c7, 0x46652323, + 0x9d5ec3c3, 0x30281818, 0x37a19696, 0x0a0f0505, 0x2fb59a9a, 0x0e090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2, + 0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, 0x362d1b1b, + 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 0x527b2929, 0xdd3ee3e3, + 0x5e712f2f, 0x13978484, 0xa6f55353, 0xb968d1d1, 0x00000000, 0xc12ceded, 0x40602020, 0xe31ffcfc, 0x79c8b1b1, + 0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf, + 0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 0x8acf4545, + 0xe910f9f9, 0x04060202, 0xfe817f7f, 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, 0xa2f35151, 0x5dfea3a3, + 0x80c04040, 0x058a8f8f, 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, 0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, + 0x42632121, 0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec, + 0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 0xc8ac6464, + 0xbae75d5d, 0x322b1919, 0xe6957373, 0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, 0x44662222, 0x547e2a2a, + 0x3bab9090, 0x0b838888, 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 0xa779dede, 0xbce25e5e, 0x161d0b0b, + 0xad76dbdb, 0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 0x92db4949, 0x0c0a0606, 0x486c2424, 0xb8e45c5c, + 0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 0xd532e7e7, + 0x8b43c8c8, 0x6e593737, 0xdab76d6d, 0x018c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c, 0xacfa5656, + 0xf307f4f4, 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, 0x6fd5baba, 0xf0887878, 0x4a6f2525, + 0x5c722e2e, 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f, + 0x96dd4b4b, 0x61dcbdbd, 0x0d868b8b, 0x0f858a8a, 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, 0x90d84848, + 0x06050303, 0xf701f6f6, 0x1c120e0e, 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 0x17918686, 0x9958c1c1, + 0x3a271d1d, 0x27b99e9e, 0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, 0xd2bb6969, 0xa970d9d9, 0x07898e8e, + 0x33a79494, 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf, + 0x038f8c8c, 0x59f8a1a1, 0x09808989, 0x1a170d0d, 0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, 0x82c34141, + 0x29b09999, 0x5a772d2d, 0x1e110f0f, 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616 }; + + private static final int[] Tinv0 = { 0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 0xcb6bab3b, 0xf1459d1f, + 0xab58faac, 0x9303e34b, 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, 0xfcd7e54f, 0xd7cb2ac5, 0x80443526, + 0x8fa362b5, 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, 0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b, + 0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, 0x6a89c275, + 0x78798ef4, 0x6b3e5899, 0xdd71b927, 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 0x184adf63, 0x82311ae5, + 0x60335197, 0x457f5362, 0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 0x58684870, 0x19fd458f, 0x876cde94, + 0xb7f87b52, 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3, + 0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, 0xcdf4da65, + 0xd5be0506, 0x1f6234d1, 0x8afea6c4, 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 0x39ec830b, 0xaaef6040, + 0x069f715e, 0x51106ebd, 0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 0xb58d5491, 0x055dc471, 0x6fd40604, + 0xff155060, 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879, + 0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000, 0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 0xfbff0efd, + 0x5638850f, 0x1ed5ae3d, 0x27392d36, 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, 0xb1670a0c, 0x0fe75793, + 0xd296eeb4, 0x9e919b1b, 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, 0x0aba93e2, 0xe52aa0c0, 0x43e0223c, + 0x1d171b12, 0x0b0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3, + 0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 0xcadc31d7, + 0x10856342, 0x40229713, 0x2011c684, 0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc, + 0xec52860d, 0xd0e3c177, 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, + 0xef903322, 0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f, + 0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54, 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 0xbe805d9f, + 0x7c93d069, 0xa92dd56f, 0xb31225cf, 0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 0x097826cd, 0xf418596e, + 0x01b79aec, 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef, 0xd99be7ba, 0xce366f4a, 0xd4099fea, + 0xd67cb029, 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, 0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733, + 0x4a9804f1, 0xf7daec41, 0x0e50cd7f, 0x2ff69117, 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, 0xe3b5d19e, + 0x1b886a4c, 0xb81f2cc1, 0x7f516546, 0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, 0x5a1d67b3, 0x52d2db92, + 0x335610e9, 0x1347d66d, 0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, 0xee27a9ce, 0x35c961b7, 0xede51ce1, + 0x3cb1477a, 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478, + 0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 0x72c31d16, 0x0c25e2bc, 0x8b493c28, 0x41950dff, 0x7101a839, + 0xdeb30c08, 0x9ce4b4d8, 0x90c15664, 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0 }; + + private static final int[] Tinv1 = { 0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 0x6bab3bcb, 0x459d1ff1, + 0x58faacab, 0x03e34b93, 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, 0xd7e54ffc, 0xcb2ac5d7, 0x44352680, + 0xa362b58f, 0x5ab1de49, 0x1bba2567, 0x0eea4598, 0xc0fe5de1, 0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6, + 0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, 0x89c2756a, + 0x798ef478, 0x3e58996b, 0x71b927dd, 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, 0x4adf6318, 0x311ae582, + 0x33519760, 0x7f536245, 0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, 0x68487058, 0xfd458f19, 0x6cde9487, + 0xf87b52b7, 0xd373ab23, 0x024b72e2, 0x8f1fe357, 0xab55662a, 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x0837d3a5, + 0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, 0xf4da65cd, + 0xbe0506d5, 0x6234d11f, 0xfea6c48a, 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 0xec830b39, 0xef6040aa, + 0x9f715e06, 0x106ebd51, 0x8a213ef9, 0x06dd963d, 0x053eddae, 0xbde64d46, 0x8d5491b5, 0x5dc47105, 0xd406046f, + 0x155060ff, 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db, + 0x0a7ca147, 0x0f427ce9, 0x1e84f8c9, 0x00000000, 0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 0xff0efdfb, + 0x38850f56, 0xd5ae3d1e, 0x392d3627, 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, 0x670a0cb1, 0xe757930f, + 0x96eeb4d2, 0x919b1b9e, 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, 0xba93e20a, 0x2aa0c0e5, 0xe0223c43, + 0x171b121d, 0x0d090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 0x19f15785, 0x0775af4c, 0xdd99eebb, 0x607fa3fd, + 0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 0xdc31d7ca, + 0x85634210, 0x22971340, 0x11c68420, 0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3, + 0x52860dec, 0xe3c177d0, 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, + 0x903322ef, 0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0x0bd49836, 0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4, + 0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 0x805d9fbe, + 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 0x7826cd09, 0x18596ef4, + 0xb79aec01, 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, 0x9be7bad9, 0x366f4ace, 0x099fead4, + 0x7cb029d6, 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, 0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315, + 0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x0496e4df, 0xb5d19ee3, + 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, 0x1d67b35a, 0xd2db9252, + 0x5610e933, 0x47d66d13, 0x61d79a8c, 0x0ca1377a, 0x14f8598e, 0x3c13eb89, 0x27a9ceee, 0xc961b735, 0xe51ce1ed, + 0xb1477a3c, 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886, + 0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, 0x01a83971, + 0xb30c08de, 0xe4b4d89c, 0xc1566490, 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042 }; + + private static final int[] Tinv2 = { 0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 0xab3bcb6b, 0x9d1ff145, + 0xfaacab58, 0xe34b9303, 0x302055fa, 0x76adf66d, 0xcc889176, 0x02f5254c, 0xe54ffcd7, 0x2ac5d7cb, 0x35268044, + 0x62b58fa3, 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, 0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9, + 0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, 0xc2756a89, + 0x8ef47879, 0x58996b3e, 0xb927dd71, 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, 0xdf63184a, 0x1ae58231, + 0x51976033, 0x5362457f, 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x08f9942b, 0x48705868, 0x458f19fd, 0xde94876c, + 0x7b52b7f8, 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508, + 0x2830f287, 0xbf23b2a5, 0x0302ba6a, 0x16ed5c82, 0xcf8a2b1c, 0x79a792b4, 0x07f3f0f2, 0x694ea1e2, 0xda65cdf4, + 0x0506d5be, 0x34d11f62, 0xa6c48afe, 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 0x830b39ec, 0x6040aaef, + 0x715e069f, 0x6ebd5110, 0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 0x5491b58d, 0xc471055d, 0x06046fd4, + 0x5060ff15, 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee, + 0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x00000000, 0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 0x0efdfbff, + 0x850f5638, 0xae3d1ed5, 0x2d362739, 0x0f0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, 0x0a0cb167, 0x57930fe7, + 0xeeb4d296, 0x9b1b9e91, 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, 0x93e20aba, 0xa0c0e52a, 0x223c43e0, + 0x1b121d17, 0x090e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60, + 0x01f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 0x31d7cadc, + 0x63421085, 0x97134022, 0xc6842011, 0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330, + 0x860dec52, 0xc177d0e3, 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, + 0x3322ef90, 0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf, + 0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 0x5d9fbe80, + 0xd0697c93, 0xd56fa92d, 0x25cfb312, 0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978, 0x596ef418, + 0x9aec01b7, 0x4f83a89a, 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, 0xe7bad99b, 0x6f4ace36, 0x9fead409, + 0xb029d67c, 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, 0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8, + 0x04f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, 0xd19ee3b5, + 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0x0bfb2e41, 0x67b35a1d, 0xdb9252d2, + 0x10e93356, 0xd66d1347, 0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, 0xa9ceee27, 0x61b735c9, 0x1ce1ede5, + 0x477a3cb1, 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db, + 0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0x0dff4195, 0xa8397101, + 0x0c08deb3, 0xb4d89ce4, 0x566490c1, 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257 }; + + private static final int[] Tinv3 = { 0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 0x3bcb6bab, 0x1ff1459d, + 0xacab58fa, 0x4b9303e3, 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, + 0xb58fa362, 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, 0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3, + 0x03e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, 0x756a89c2, + 0xf478798e, 0x996b3e58, 0x27dd71b9, 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, 0x63184adf, 0xe582311a, + 0x97603351, 0x62457f53, 0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 0x70586848, 0x8f19fd45, 0x94876cde, + 0x52b7f87b, 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837, + 0x30f28728, 0x23b2a5bf, 0x02ba6a03, 0xed5c8216, 0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, 0x65cdf4da, + 0x06d5be05, 0xd11f6234, 0xc48afea6, 0x349d532e, 0xa2a055f3, 0x0532e18a, 0xa475ebf6, 0x0b39ec83, 0x40aaef60, + 0x5e069f71, 0xbd51106e, 0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 0x91b58d54, 0x71055dc4, 0x046fd406, + 0x60ff1550, 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, 0xb0bd42e8, 0x07888b89, 0xe7385b19, 0x79dbeec8, + 0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x00000000, 0x09838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 0xfdfbff0e, + 0x0f563885, 0x3d1ed5ae, 0x3627392d, 0x0a64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, 0x0cb1670a, 0x930fe757, + 0xb4d296ee, 0x1b9e919b, 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, 0xe20aba93, 0xc0e52aa0, 0x3c43e022, + 0x121d171b, 0x0e0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f, + 0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, 0xd7cadc31, + 0x42108563, 0x13402297, 0x842011c6, 0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, 0x1d4b2f9e, 0xdcf330b2, + 0x0dec5286, 0x77d0e3c1, 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, + 0x22ef9033, 0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad, + 0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 0x9fbe805d, + 0x697c93d0, 0x6fa92dd5, 0xcfb31225, 0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 0xcd097826, 0x6ef41859, + 0xec01b79a, 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, 0xbad99be7, 0x4ace366f, 0xead4099f, + 0x29d67cb0, 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, 0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7, + 0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, 0x9ee3b5d1, + 0x4c1b886a, 0xc1b81f2c, 0x467f5165, 0x9d04ea5e, 0x015d358c, 0xfa737487, 0xfb2e410b, 0xb35a1d67, 0x9252d2db, + 0xe9335610, 0x6d1347d6, 0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, 0xceee27a9, 0xb735c961, 0xe1ede51c, + 0x7a3cb147, 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44, + 0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, 0x397101a8, + 0x08deb30c, 0xd89ce4b4, 0x6490c156, 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8 }; + + private final int shift(int r, int shift) + { + return (((r >>> shift) | (r << (32 - shift)))); + } + + /* multiply four bytes in GF(2^8) by 'x' {02} in parallel */ + + private static final int m1 = 0x80808080; + private static final int m2 = 0x7f7f7f7f; + private static final int m3 = 0x0000001b; + + private final int FFmulX(int x) + { + return (((x & m2) << 1) ^ (((x & m1) >>> 7) * m3)); + } + + /* + * The following defines provide alternative definitions of FFmulX that + * might give improved performance if a fast 32-bit multiply is not + * available. + * + * private int FFmulX(int x) { int u = x & m1; u |= (u >> 1); return ((x & + * m2) < < 1) ^ ((u >>> 3) | (u >>> 6)); } private static final int m4 = + * 0x1b1b1b1b; private int FFmulX(int x) { int u = x & m1; return ((x & m2) < < + * 1) ^ ((u - (u >>> 7)) & m4); } + * + */ + + private final int inv_mcol(int x) + { + int f2 = FFmulX(x); + int f4 = FFmulX(f2); + int f8 = FFmulX(f4); + int f9 = x ^ f8; + + return f2 ^ f4 ^ f8 ^ shift(f2 ^ f9, 8) ^ shift(f4 ^ f9, 16) ^ shift(f9, 24); + } + + private final int subWord(int x) + { + return (S[x & 255] & 255 | ((S[(x >> 8) & 255] & 255) << 8) | ((S[(x >> 16) & 255] & 255) << 16) | S[(x >> 24) & 255] << 24); + } + + /** + * Calculate the necessary round keys The number of calculations depends on + * key size and block size AES specified a fixed block size of 128 bits and + * key sizes 128/192/256 bits This code is written assuming those are the + * only possible values + */ + private final int[][] generateWorkingKey(byte[] key, boolean forEncryption) + { + int KC = key.length / 4; // key length in words + int t; + + if (((KC != 4) && (KC != 6) && (KC != 8)) || ((KC * 4) != key.length)) + { + throw new IllegalArgumentException("Key length not 128/192/256 bits."); + } + + ROUNDS = KC + 6; // This is not always true for the generalized + // Rijndael that allows larger block sizes + int[][] W = new int[ROUNDS + 1][4]; // 4 words in a block + + // + // copy the key into the round key array + // + + t = 0; + for (int i = 0; i < key.length; t++) + { + W[t >> 2][t & 3] = (key[i] & 0xff) | ((key[i + 1] & 0xff) << 8) | ((key[i + 2] & 0xff) << 16) + | (key[i + 3] << 24); + i += 4; + } + + // + // while not enough round key material calculated + // calculate new values + // + int k = (ROUNDS + 1) << 2; + for (int i = KC; (i < k); i++) + { + int temp = W[(i - 1) >> 2][(i - 1) & 3]; + if ((i % KC) == 0) + { + temp = subWord(shift(temp, 8)) ^ rcon[(i / KC) - 1]; + } + else if ((KC > 6) && ((i % KC) == 4)) + { + temp = subWord(temp); + } + + W[i >> 2][i & 3] = W[(i - KC) >> 2][(i - KC) & 3] ^ temp; + } + + if (!forEncryption) + { + for (int j = 1; j < ROUNDS; j++) + { + for (int i = 0; i < 4; i++) + { + W[j][i] = inv_mcol(W[j][i]); + } + } + } + + return W; + } + + private int ROUNDS; + private int[][] WorkingKey = null; + private int C0, C1, C2, C3; + private boolean doEncrypt; + + private static final int BLOCK_SIZE = 16; + + /** + * default constructor - 128 bit block size. + */ + public AES() + { + } + + /** + * initialise an AES cipher. + * + * @param forEncryption + * whether or not we are for encryption. + * @param key + * the key required to set up the cipher. + * @exception IllegalArgumentException + * if the params argument is inappropriate. + */ + + public final void init(boolean forEncryption, byte[] key) + { + WorkingKey = generateWorkingKey(key, forEncryption); + this.doEncrypt = forEncryption; + } + + public final String getAlgorithmName() + { + return "AES"; + } + + public final int getBlockSize() + { + return BLOCK_SIZE; + } + + public final int processBlock(byte[] in, int inOff, byte[] out, int outOff) + { + if (WorkingKey == null) + { + throw new IllegalStateException("AES engine not initialised"); + } + + if ((inOff + (32 / 2)) > in.length) + { + throw new IllegalArgumentException("input buffer too short"); + } + + if ((outOff + (32 / 2)) > out.length) + { + throw new IllegalArgumentException("output buffer too short"); + } + + if (doEncrypt) + { + unpackBlock(in, inOff); + encryptBlock(WorkingKey); + packBlock(out, outOff); + } + else + { + unpackBlock(in, inOff); + decryptBlock(WorkingKey); + packBlock(out, outOff); + } + + return BLOCK_SIZE; + } + + public final void reset() + { + } + + private final void unpackBlock(byte[] bytes, int off) + { + int index = off; + + C0 = (bytes[index++] & 0xff); + C0 |= (bytes[index++] & 0xff) << 8; + C0 |= (bytes[index++] & 0xff) << 16; + C0 |= bytes[index++] << 24; + + C1 = (bytes[index++] & 0xff); + C1 |= (bytes[index++] & 0xff) << 8; + C1 |= (bytes[index++] & 0xff) << 16; + C1 |= bytes[index++] << 24; + + C2 = (bytes[index++] & 0xff); + C2 |= (bytes[index++] & 0xff) << 8; + C2 |= (bytes[index++] & 0xff) << 16; + C2 |= bytes[index++] << 24; + + C3 = (bytes[index++] & 0xff); + C3 |= (bytes[index++] & 0xff) << 8; + C3 |= (bytes[index++] & 0xff) << 16; + C3 |= bytes[index++] << 24; + } + + private final void packBlock(byte[] bytes, int off) + { + int index = off; + + bytes[index++] = (byte) C0; + bytes[index++] = (byte) (C0 >> 8); + bytes[index++] = (byte) (C0 >> 16); + bytes[index++] = (byte) (C0 >> 24); + + bytes[index++] = (byte) C1; + bytes[index++] = (byte) (C1 >> 8); + bytes[index++] = (byte) (C1 >> 16); + bytes[index++] = (byte) (C1 >> 24); + + bytes[index++] = (byte) C2; + bytes[index++] = (byte) (C2 >> 8); + bytes[index++] = (byte) (C2 >> 16); + bytes[index++] = (byte) (C2 >> 24); + + bytes[index++] = (byte) C3; + bytes[index++] = (byte) (C3 >> 8); + bytes[index++] = (byte) (C3 >> 16); + bytes[index++] = (byte) (C3 >> 24); + } + + private final void encryptBlock(int[][] KW) + { + int r, r0, r1, r2, r3; + + C0 ^= KW[0][0]; + C1 ^= KW[0][1]; + C2 ^= KW[0][2]; + C3 ^= KW[0][3]; + + for (r = 1; r < ROUNDS - 1;) + { + r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0]; + r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1]; + r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2]; + r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3]; + C0 = T0[r0 & 255] ^ T1[(r1 >> 8) & 255] ^ T2[(r2 >> 16) & 255] ^ T3[(r3 >> 24) & 255] ^ KW[r][0]; + C1 = T0[r1 & 255] ^ T1[(r2 >> 8) & 255] ^ T2[(r3 >> 16) & 255] ^ T3[(r0 >> 24) & 255] ^ KW[r][1]; + C2 = T0[r2 & 255] ^ T1[(r3 >> 8) & 255] ^ T2[(r0 >> 16) & 255] ^ T3[(r1 >> 24) & 255] ^ KW[r][2]; + C3 = T0[r3 & 255] ^ T1[(r0 >> 8) & 255] ^ T2[(r1 >> 16) & 255] ^ T3[(r2 >> 24) & 255] ^ KW[r++][3]; + } + + r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0]; + r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1]; + r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2]; + r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3]; + + // the final round's table is a simple function of S so we don't use a + // whole other four tables for it + + C0 = (S[r0 & 255] & 255) ^ ((S[(r1 >> 8) & 255] & 255) << 8) ^ ((S[(r2 >> 16) & 255] & 255) << 16) + ^ (S[(r3 >> 24) & 255] << 24) ^ KW[r][0]; + C1 = (S[r1 & 255] & 255) ^ ((S[(r2 >> 8) & 255] & 255) << 8) ^ ((S[(r3 >> 16) & 255] & 255) << 16) + ^ (S[(r0 >> 24) & 255] << 24) ^ KW[r][1]; + C2 = (S[r2 & 255] & 255) ^ ((S[(r3 >> 8) & 255] & 255) << 8) ^ ((S[(r0 >> 16) & 255] & 255) << 16) + ^ (S[(r1 >> 24) & 255] << 24) ^ KW[r][2]; + C3 = (S[r3 & 255] & 255) ^ ((S[(r0 >> 8) & 255] & 255) << 8) ^ ((S[(r1 >> 16) & 255] & 255) << 16) + ^ (S[(r2 >> 24) & 255] << 24) ^ KW[r][3]; + + } + + private final void decryptBlock(int[][] KW) + { + int r, r0, r1, r2, r3; + + C0 ^= KW[ROUNDS][0]; + C1 ^= KW[ROUNDS][1]; + C2 ^= KW[ROUNDS][2]; + C3 ^= KW[ROUNDS][3]; + + for (r = ROUNDS - 1; r > 1;) + { + r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255] + ^ KW[r][0]; + r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255] + ^ KW[r][1]; + r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255] + ^ KW[r][2]; + r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255] + ^ KW[r--][3]; + C0 = Tinv0[r0 & 255] ^ Tinv1[(r3 >> 8) & 255] ^ Tinv2[(r2 >> 16) & 255] ^ Tinv3[(r1 >> 24) & 255] + ^ KW[r][0]; + C1 = Tinv0[r1 & 255] ^ Tinv1[(r0 >> 8) & 255] ^ Tinv2[(r3 >> 16) & 255] ^ Tinv3[(r2 >> 24) & 255] + ^ KW[r][1]; + C2 = Tinv0[r2 & 255] ^ Tinv1[(r1 >> 8) & 255] ^ Tinv2[(r0 >> 16) & 255] ^ Tinv3[(r3 >> 24) & 255] + ^ KW[r][2]; + C3 = Tinv0[r3 & 255] ^ Tinv1[(r2 >> 8) & 255] ^ Tinv2[(r1 >> 16) & 255] ^ Tinv3[(r0 >> 24) & 255] + ^ KW[r--][3]; + } + + r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255] ^ KW[r][0]; + r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255] ^ KW[r][1]; + r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255] ^ KW[r][2]; + r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255] ^ KW[r--][3]; + + // the final round's table is a simple function of Si so we don't use a + // whole other four tables for it + + C0 = (Si[r0 & 255] & 255) ^ ((Si[(r3 >> 8) & 255] & 255) << 8) ^ ((Si[(r2 >> 16) & 255] & 255) << 16) + ^ (Si[(r1 >> 24) & 255] << 24) ^ KW[0][0]; + C1 = (Si[r1 & 255] & 255) ^ ((Si[(r0 >> 8) & 255] & 255) << 8) ^ ((Si[(r3 >> 16) & 255] & 255) << 16) + ^ (Si[(r2 >> 24) & 255] << 24) ^ KW[0][1]; + C2 = (Si[r2 & 255] & 255) ^ ((Si[(r1 >> 8) & 255] & 255) << 8) ^ ((Si[(r0 >> 16) & 255] & 255) << 16) + ^ (Si[(r3 >> 24) & 255] << 24) ^ KW[0][2]; + C3 = (Si[r3 & 255] & 255) ^ ((Si[(r2 >> 8) & 255] & 255) << 8) ^ ((Si[(r1 >> 16) & 255] & 255) << 16) + ^ (Si[(r0 >> 24) & 255] << 24) ^ KW[0][3]; + } + + public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + processBlock(src, srcoff, dst, dstoff); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java index de60952..4cc28ab 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java @@ -1,16 +1,16 @@ -package com.trilead.ssh2.crypto.cipher;
-
-/**
- * BlockCipher.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: BlockCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public interface BlockCipher
-{
- public void init(boolean forEncryption, byte[] key);
-
- public int getBlockSize();
-
- public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff);
-}
+package com.trilead.ssh2.crypto.cipher; + +/** + * BlockCipher. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: BlockCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public interface BlockCipher +{ + public void init(boolean forEncryption, byte[] key); + + public int getBlockSize(); + + public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff); +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java index cf18f43..6e386a5 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java @@ -1,115 +1,115 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-import java.util.Vector;
-
-/**
- * BlockCipherFactory.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: BlockCipherFactory.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class BlockCipherFactory
-{
- static class CipherEntry
- {
- String type;
- int blocksize;
- int keysize;
- String cipherClass;
-
- public CipherEntry(String type, int blockSize, int keySize, String cipherClass)
- {
- this.type = type;
- this.blocksize = blockSize;
- this.keysize = keySize;
- this.cipherClass = cipherClass;
- }
- }
-
- static Vector<CipherEntry> ciphers = new Vector<CipherEntry>();
-
- static
- {
- /* Higher Priority First */
-
- ciphers.addElement(new CipherEntry("aes256-ctr", 16, 32, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("aes192-ctr", 16, 24, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("aes128-ctr", 16, 16, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("blowfish-ctr", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish"));
-
- ciphers.addElement(new CipherEntry("aes256-cbc", 16, 32, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("aes192-cbc", 16, 24, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("aes128-cbc", 16, 16, "com.trilead.ssh2.crypto.cipher.AES"));
- ciphers.addElement(new CipherEntry("blowfish-cbc", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish"));
-
- ciphers.addElement(new CipherEntry("3des-ctr", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede"));
- ciphers.addElement(new CipherEntry("3des-cbc", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede"));
- }
-
- public static String[] getDefaultCipherList()
- {
- String list[] = new String[ciphers.size()];
- for (int i = 0; i < ciphers.size(); i++)
- {
- CipherEntry ce = ciphers.elementAt(i);
- list[i] = new String(ce.type);
- }
- return list;
- }
-
- public static void checkCipherList(String[] cipherCandidates)
- {
- for (int i = 0; i < cipherCandidates.length; i++)
- getEntry(cipherCandidates[i]);
- }
-
- public static BlockCipher createCipher(String type, boolean encrypt, byte[] key, byte[] iv)
- {
- try
- {
- CipherEntry ce = getEntry(type);
- Class cc = Class.forName(ce.cipherClass);
- BlockCipher bc = (BlockCipher) cc.newInstance();
-
- if (type.endsWith("-cbc"))
- {
- bc.init(encrypt, key);
- return new CBCMode(bc, iv, encrypt);
- }
- else if (type.endsWith("-ctr"))
- {
- bc.init(true, key);
- return new CTRMode(bc, iv, encrypt);
- }
- throw new IllegalArgumentException("Cannot instantiate " + type);
- }
- catch (Exception e)
- {
- throw new IllegalArgumentException("Cannot instantiate " + type);
- }
- }
-
- private static CipherEntry getEntry(String type)
- {
- for (int i = 0; i < ciphers.size(); i++)
- {
- CipherEntry ce = ciphers.elementAt(i);
- if (ce.type.equals(type))
- return ce;
- }
- throw new IllegalArgumentException("Unkown algorithm " + type);
- }
-
- public static int getBlockSize(String type)
- {
- CipherEntry ce = getEntry(type);
- return ce.blocksize;
- }
-
- public static int getKeySize(String type)
- {
- CipherEntry ce = getEntry(type);
- return ce.keysize;
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +import java.util.Vector; + +/** + * BlockCipherFactory. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: BlockCipherFactory.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class BlockCipherFactory +{ + static class CipherEntry + { + String type; + int blocksize; + int keysize; + String cipherClass; + + public CipherEntry(String type, int blockSize, int keySize, String cipherClass) + { + this.type = type; + this.blocksize = blockSize; + this.keysize = keySize; + this.cipherClass = cipherClass; + } + } + + static Vector<CipherEntry> ciphers = new Vector<CipherEntry>(); + + static + { + /* Higher Priority First */ + + ciphers.addElement(new CipherEntry("aes256-ctr", 16, 32, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("aes192-ctr", 16, 24, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("aes128-ctr", 16, 16, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("blowfish-ctr", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish")); + + ciphers.addElement(new CipherEntry("aes256-cbc", 16, 32, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("aes192-cbc", 16, 24, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("aes128-cbc", 16, 16, "com.trilead.ssh2.crypto.cipher.AES")); + ciphers.addElement(new CipherEntry("blowfish-cbc", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish")); + + ciphers.addElement(new CipherEntry("3des-ctr", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede")); + ciphers.addElement(new CipherEntry("3des-cbc", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede")); + } + + public static String[] getDefaultCipherList() + { + String list[] = new String[ciphers.size()]; + for (int i = 0; i < ciphers.size(); i++) + { + CipherEntry ce = ciphers.elementAt(i); + list[i] = new String(ce.type); + } + return list; + } + + public static void checkCipherList(String[] cipherCandidates) + { + for (int i = 0; i < cipherCandidates.length; i++) + getEntry(cipherCandidates[i]); + } + + public static BlockCipher createCipher(String type, boolean encrypt, byte[] key, byte[] iv) + { + try + { + CipherEntry ce = getEntry(type); + Class cc = Class.forName(ce.cipherClass); + BlockCipher bc = (BlockCipher) cc.newInstance(); + + if (type.endsWith("-cbc")) + { + bc.init(encrypt, key); + return new CBCMode(bc, iv, encrypt); + } + else if (type.endsWith("-ctr")) + { + bc.init(true, key); + return new CTRMode(bc, iv, encrypt); + } + throw new IllegalArgumentException("Cannot instantiate " + type); + } + catch (Exception e) + { + throw new IllegalArgumentException("Cannot instantiate " + type); + } + } + + private static CipherEntry getEntry(String type) + { + for (int i = 0; i < ciphers.size(); i++) + { + CipherEntry ce = ciphers.elementAt(i); + if (ce.type.equals(type)) + return ce; + } + throw new IllegalArgumentException("Unkown algorithm " + type); + } + + public static int getBlockSize(String type) + { + CipherEntry ce = getEntry(type); + return ce.blocksize; + } + + public static int getKeySize(String type) + { + CipherEntry ce = getEntry(type); + return ce.keysize; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java index ea0f614..0b2f295 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java @@ -1,403 +1,403 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- */
-
-/**
- * A class that provides Blowfish key encryption operations, such as encoding
- * data and generating keys. All the algorithms herein are from Applied
- * Cryptography and implement a simplified cryptography interface.
- *
- * @author See comments in the source file
- * @version $Id: BlowFish.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class BlowFish implements BlockCipher
-{
-
- private final static int[] KP = { 0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344, 0xA4093822, 0x299F31D0,
- 0x082EFA98, 0xEC4E6C89, 0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C, 0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5,
- 0xB5470917, 0x9216D5D9, 0x8979FB1B },
-
- KS0 = { 0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7, 0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99, 0x24A19947,
- 0xB3916CF7, 0x0801F2E2, 0x858EFC16, 0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E, 0x0D95748F, 0x728EB658,
- 0x718BCD58, 0x82154AEE, 0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013, 0xC5D1B023, 0x286085F0, 0xCA417918,
- 0xB8DB38EF, 0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E, 0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60,
- 0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440, 0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE, 0xA15486AF,
- 0x7C72E993, 0xB3EE1411, 0x636FBC2A, 0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E, 0xAFD6BA33, 0x6C24CF5C,
- 0x7A325381, 0x28958677, 0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193, 0x61D809CC, 0xFB21A991, 0x487CAC60,
- 0x5DEC8032, 0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88, 0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239,
- 0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E, 0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0, 0x6A51A0D2,
- 0xD8542F68, 0x960FA728, 0xAB5133A3, 0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98, 0xA1F1651D, 0x39AF0176,
- 0x66CA593E, 0x82430E88, 0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE, 0xE06F75D8, 0x85C12073, 0x401A449F,
- 0x56C16AA6, 0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D, 0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B,
- 0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7, 0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA, 0xC1A94FB6,
- 0x409F60C4, 0x5E5C9EC2, 0x196A2463, 0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F, 0x6DFC511F, 0x9B30952C,
- 0xCC814544, 0xAF5EBD09, 0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3, 0xC0CBA857, 0x45C8740F, 0xD20B5F39,
- 0xB9D3FBDB, 0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279, 0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8,
- 0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB, 0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82, 0x9E5C57BB,
- 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB, 0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573, 0x695B27B0, 0xBBCA58C8,
- 0xE1FFA35D, 0xB8F011A0, 0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B, 0x9A53E479, 0xB6F84565, 0xD28E49BC,
- 0x4BFB9790, 0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8, 0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4,
- 0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0, 0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7, 0x8FF6E2FB,
- 0xF2122B64, 0x8888B812, 0x900DF01C, 0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD, 0x2F2F2218, 0xBE0E1777,
- 0xEA752DFE, 0x8B021FA1, 0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299, 0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81,
- 0xD2ADA8D9, 0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477, 0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF,
- 0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49, 0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF, 0x2464369B,
- 0xF009B91E, 0x5563911D, 0x59DFA6AA, 0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5, 0x83260376, 0x6295CFA9,
- 0x11C81968, 0x4E734A41, 0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915, 0xD60F573F, 0xBC9BC6E4, 0x2B60A476,
- 0x81E67400, 0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915, 0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664,
- 0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A },
-
- KS1 = { 0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623, 0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266, 0xECAA8C71,
- 0x699A17FF, 0x5664526C, 0xC2B19EE1, 0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E, 0x3F54989A, 0x5B429D65,
- 0x6B8FE4D6, 0x99F73FD6, 0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1, 0x4CDD2086, 0x8470EB26, 0x6382E9C6,
- 0x021ECC5E, 0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1, 0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737,
- 0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8, 0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF, 0xAE0CF51A,
- 0x3CB574B2, 0x25837A58, 0xDC0921BD, 0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701, 0x3AE5E581, 0x37C2DADC,
- 0xC8B57634, 0x9AF3DDA7, 0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41, 0xE238CD99, 0x3BEA0E2F, 0x3280BBA1,
- 0x183EB331, 0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF, 0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF,
- 0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E, 0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87, 0x7A584718,
- 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C, 0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2, 0xEF1C1847, 0x3215D908,
- 0xDD433B37, 0x24C2BA16, 0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD, 0x71DFF89E, 0x10314E55, 0x81AC77D6,
- 0x5F11199B, 0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509, 0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E,
- 0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3, 0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F, 0x803E89D6,
- 0x5266C825, 0x2E4CC978, 0x9C10B36A, 0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4, 0xF2F74EA7, 0x361D2B3D,
- 0x1939260F, 0x19C27960, 0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66, 0xE3BC4595, 0xA67BC883, 0xB17F37D1,
- 0x018CFF28, 0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802, 0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84,
- 0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510, 0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF, 0xB5735C90,
- 0x4C70A239, 0xD59E9E0B, 0xCBAADE14, 0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E, 0x648B1EAF, 0x19BDF0CA,
- 0xA02369B9, 0x655ABB50, 0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7, 0x9B540B19, 0x875FA099, 0x95F7997E,
- 0x623D7DA8, 0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281, 0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99,
- 0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696, 0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128, 0x58EBF2EF,
- 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73, 0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0, 0x45EEE2B6, 0xA3AAABEA,
- 0xDB6C4F15, 0xFACB4FD0, 0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105, 0xD81E799E, 0x86854DC7, 0xE44B476A,
- 0x3D816250, 0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3, 0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285,
- 0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00, 0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061, 0x3372F092,
- 0x8D937E41, 0xD65FECF1, 0x6C223BDB, 0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E, 0xA6078084, 0x19F8509E,
- 0xE8EFD855, 0x61D99735, 0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC, 0x9E447A2E, 0xC3453484, 0xFDD56705,
- 0x0E1E9EC9, 0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340, 0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20,
- 0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7 },
-
- KS2 = { 0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934, 0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068, 0xD4082471,
- 0x3320F46A, 0x43B7D4B7, 0x500061AF, 0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840, 0x4D95FC1D, 0x96B591AF,
- 0x70F4DDD3, 0x66A02F45, 0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504, 0x96EB27B3, 0x55FD3941, 0xDA2547E6,
- 0xABCA0A9A, 0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB, 0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE,
- 0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6, 0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42, 0x20FE9E35,
- 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B, 0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2, 0x3A6EFA74, 0xDD5B4332,
- 0x6841E7F7, 0xCA7820FB, 0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527, 0x55533A3A, 0x20838D87, 0xFE6BA9B7,
- 0xD096954B, 0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33, 0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C,
- 0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3, 0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC, 0x07F9C9EE,
- 0x41041F0F, 0x404779A4, 0x5D886E17, 0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564, 0x257B7834, 0x602A9C60,
- 0xDFF8E8A3, 0x1F636C1B, 0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115, 0x6B2395E0, 0x333E92E1, 0x3B240B62,
- 0xEEBEB922, 0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728, 0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0,
- 0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E, 0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37, 0xA812DC60,
- 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D, 0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804, 0xF1290DC7, 0xCC00FFA3,
- 0xB5390F92, 0x690FED0B, 0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3, 0xBB132F88, 0x515BAD24, 0x7B9479BF,
- 0x763BD6EB, 0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D, 0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C,
- 0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350, 0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9, 0x44421659,
- 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A, 0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE, 0x9DBC8057, 0xF0F7C086,
- 0x60787BF8, 0x6003604D, 0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC, 0x83426B33, 0xF01EAB71, 0xB0804187,
- 0x3C005E5F, 0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61, 0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2,
- 0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9, 0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2, 0x466E598E,
- 0x20B45770, 0x8CD55591, 0xC902DE4C, 0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E, 0xB77F19B6, 0xE0A9DC09,
- 0x662D09A1, 0xC4324633, 0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10, 0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F,
- 0x2868F169, 0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52, 0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027,
- 0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5, 0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62, 0x11E69ED7,
- 0x2338EA63, 0x53C2DD94, 0xC2C21634, 0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76, 0x6F05E409, 0x4B7C0188,
- 0x39720A3D, 0x7C927C24, 0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC, 0xED545578, 0x08FCA5B5, 0xD83D7CD3,
- 0x4DAD0FC4, 0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C, 0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837,
- 0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0 },
-
- KS3 = { 0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B, 0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE, 0xD5118E9D,
- 0xBF0F7315, 0xD62D1C7E, 0xC700C47B, 0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4, 0x5748AB2F, 0xBC946E79,
- 0xC6A376D2, 0x6549C2C8, 0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6, 0x2939BBDB, 0xA9BA4650, 0xAC9526E8,
- 0xBE5EE304, 0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22, 0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4,
- 0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6, 0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9, 0xC72FEFD3,
- 0xF752F7DA, 0x3F046F69, 0x77FA0A59, 0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593, 0xE990FD5A, 0x9E34D797,
- 0x2CF0B7D9, 0x022B8B51, 0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28, 0x1F9F25CF, 0xADF2B89B, 0x5AD6B472,
- 0x5A88F54C, 0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B, 0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28,
- 0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C, 0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD, 0xC3EB9E15,
- 0x3C9057A2, 0x97271AEC, 0xA93A072A, 0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319, 0x7533D928, 0xB155FDF5,
- 0x03563482, 0x8ABA3CBB, 0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F, 0x4DE81751, 0x3830DC8E, 0x379D5862,
- 0x9320F991, 0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32, 0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680,
- 0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166, 0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE, 0x5BBEF7DD,
- 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB, 0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5, 0x72EACEA8, 0xFA6484BB,
- 0x8D6612AE, 0xBF3C6F47, 0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370, 0x740E0D8D, 0xE75B1357, 0xF8721671,
- 0xAF537D5D, 0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84, 0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048,
- 0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8, 0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD, 0xA08839E1,
- 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9, 0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7, 0x1A908749, 0xD44FBD9A,
- 0xD0DADECB, 0xD50ADA38, 0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F, 0xF79E59B7, 0x43F5BB3A, 0xF2D519FF,
- 0x27D9459C, 0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525, 0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1,
- 0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442, 0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964, 0x9F1F9532,
- 0xE0D392DF, 0xD3A0342B, 0x8971F21E, 0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8, 0xDF359F8D, 0x9B992F2E,
- 0xE60B6F47, 0x0FE3F11D, 0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F, 0x1618B166, 0xFD2C1D05, 0x848FD2C5,
- 0xF6FB2299, 0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02, 0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC,
- 0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614, 0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A, 0xC9AA53FD,
- 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6, 0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B, 0x53113EC0, 0x1640E3D3,
- 0x38ABBD60, 0x2547ADF0, 0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060, 0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0,
- 0x4CF9AA7E, 0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9, 0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F,
- 0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6 };
-
- // ====================================
- // Useful constants
- // ====================================
-
- private static final int ROUNDS = 16;
- private static final int BLOCK_SIZE = 8; // bytes = 64 bits
- private static final int SBOX_SK = 256;
- private static final int P_SZ = ROUNDS + 2;
-
- private final int[] S0, S1, S2, S3; // the s-boxes
- private final int[] P; // the p-array
-
- private boolean doEncrypt = false;
-
- private byte[] workingKey = null;
-
- public BlowFish()
- {
- S0 = new int[SBOX_SK];
- S1 = new int[SBOX_SK];
- S2 = new int[SBOX_SK];
- S3 = new int[SBOX_SK];
- P = new int[P_SZ];
- }
-
- /**
- * initialise a Blowfish cipher.
- *
- * @param encrypting
- * whether or not we are for encryption.
- * @param key
- * the key required to set up the cipher.
- * @exception IllegalArgumentException
- * if the params argument is inappropriate.
- */
- public void init(boolean encrypting, byte[] key)
- {
- this.doEncrypt = encrypting;
- this.workingKey = key;
- setKey(this.workingKey);
- }
-
- public String getAlgorithmName()
- {
- return "Blowfish";
- }
-
- public final void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
- {
- if (workingKey == null)
- {
- throw new IllegalStateException("Blowfish not initialised");
- }
-
- if (doEncrypt)
- {
- encryptBlock(in, inOff, out, outOff);
- }
- else
- {
- decryptBlock(in, inOff, out, outOff);
- }
- }
-
- public void reset()
- {
- }
-
- public int getBlockSize()
- {
- return BLOCK_SIZE;
- }
-
- // ==================================
- // Private Implementation
- // ==================================
-
- private int F(int x)
- {
- return (((S0[(x >>> 24)] + S1[(x >>> 16) & 0xff]) ^ S2[(x >>> 8) & 0xff]) + S3[x & 0xff]);
- }
-
- /**
- * apply the encryption cycle to each value pair in the table.
- */
- private void processTable(int xl, int xr, int[] table)
- {
- int size = table.length;
-
- for (int s = 0; s < size; s += 2)
- {
- xl ^= P[0];
-
- for (int i = 1; i < ROUNDS; i += 2)
- {
- xr ^= F(xl) ^ P[i];
- xl ^= F(xr) ^ P[i + 1];
- }
-
- xr ^= P[ROUNDS + 1];
-
- table[s] = xr;
- table[s + 1] = xl;
-
- xr = xl; // end of cycle swap
- xl = table[s];
- }
- }
-
- private void setKey(byte[] key)
- {
- /*
- * - comments are from _Applied Crypto_, Schneier, p338 please be
- * careful comparing the two, AC numbers the arrays from 1, the enclosed
- * code from 0.
- *
- * (1) Initialise the S-boxes and the P-array, with a fixed string This
- * string contains the hexadecimal digits of pi (3.141...)
- */
- System.arraycopy(KS0, 0, S0, 0, SBOX_SK);
- System.arraycopy(KS1, 0, S1, 0, SBOX_SK);
- System.arraycopy(KS2, 0, S2, 0, SBOX_SK);
- System.arraycopy(KS3, 0, S3, 0, SBOX_SK);
-
- System.arraycopy(KP, 0, P, 0, P_SZ);
-
- /*
- * (2) Now, XOR P[0] with the first 32 bits of the key, XOR P[1] with
- * the second 32-bits of the key, and so on for all bits of the key (up
- * to P[17]). Repeatedly cycle through the key bits until the entire
- * P-array has been XOR-ed with the key bits
- */
- int keyLength = key.length;
- int keyIndex = 0;
-
- for (int i = 0; i < P_SZ; i++)
- {
- // get the 32 bits of the key, in 4 * 8 bit chunks
- int data = 0x0000000;
- for (int j = 0; j < 4; j++)
- {
- // create a 32 bit block
- data = (data << 8) | (key[keyIndex++] & 0xff);
-
- // wrap when we get to the end of the key
- if (keyIndex >= keyLength)
- {
- keyIndex = 0;
- }
- }
- // XOR the newly created 32 bit chunk onto the P-array
- P[i] ^= data;
- }
-
- /*
- * (3) Encrypt the all-zero string with the Blowfish algorithm, using
- * the subkeys described in (1) and (2)
- *
- * (4) Replace P1 and P2 with the output of step (3)
- *
- * (5) Encrypt the output of step(3) using the Blowfish algorithm, with
- * the modified subkeys.
- *
- * (6) Replace P3 and P4 with the output of step (5)
- *
- * (7) Continue the process, replacing all elements of the P-array and
- * then all four S-boxes in order, with the output of the continuously
- * changing Blowfish algorithm
- */
-
- processTable(0, 0, P);
- processTable(P[P_SZ - 2], P[P_SZ - 1], S0);
- processTable(S0[SBOX_SK - 2], S0[SBOX_SK - 1], S1);
- processTable(S1[SBOX_SK - 2], S1[SBOX_SK - 1], S2);
- processTable(S2[SBOX_SK - 2], S2[SBOX_SK - 1], S3);
- }
-
- /**
- * Encrypt the given input starting at the given offset and place the result
- * in the provided buffer starting at the given offset. The input will be an
- * exact multiple of our blocksize.
- */
- private void encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
- {
- int xl = BytesTo32bits(src, srcIndex);
- int xr = BytesTo32bits(src, srcIndex + 4);
-
- xl ^= P[0];
-
- for (int i = 1; i < ROUNDS; i += 2)
- {
- xr ^= F(xl) ^ P[i];
- xl ^= F(xr) ^ P[i + 1];
- }
-
- xr ^= P[ROUNDS + 1];
-
- Bits32ToBytes(xr, dst, dstIndex);
- Bits32ToBytes(xl, dst, dstIndex + 4);
- }
-
- /**
- * Decrypt the given input starting at the given offset and place the result
- * in the provided buffer starting at the given offset. The input will be an
- * exact multiple of our blocksize.
- */
- private void decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
- {
- int xl = BytesTo32bits(src, srcIndex);
- int xr = BytesTo32bits(src, srcIndex + 4);
-
- xl ^= P[ROUNDS + 1];
-
- for (int i = ROUNDS; i > 0; i -= 2)
- {
- xr ^= F(xl) ^ P[i];
- xl ^= F(xr) ^ P[i - 1];
- }
-
- xr ^= P[0];
-
- Bits32ToBytes(xr, dst, dstIndex);
- Bits32ToBytes(xl, dst, dstIndex + 4);
- }
-
- private int BytesTo32bits(byte[] b, int i)
- {
- return ((b[i] & 0xff) << 24) | ((b[i + 1] & 0xff) << 16) | ((b[i + 2] & 0xff) << 8) | ((b[i + 3] & 0xff));
- }
-
- private void Bits32ToBytes(int in, byte[] b, int offset)
- {
- b[offset + 3] = (byte) in;
- b[offset + 2] = (byte) (in >> 8);
- b[offset + 1] = (byte) (in >> 16);
- b[offset] = (byte) (in >> 24);
- }
-
-}
+ +package com.trilead.ssh2.crypto.cipher; + +/* + This file was shamelessly taken from the Bouncy Castle Crypto package. + Their licence file states the following: + + Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle + (http://www.bouncycastle.org) + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + */ + +/** + * A class that provides Blowfish key encryption operations, such as encoding + * data and generating keys. All the algorithms herein are from Applied + * Cryptography and implement a simplified cryptography interface. + * + * @author See comments in the source file + * @version $Id: BlowFish.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class BlowFish implements BlockCipher +{ + + private final static int[] KP = { 0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344, 0xA4093822, 0x299F31D0, + 0x082EFA98, 0xEC4E6C89, 0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C, 0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, + 0xB5470917, 0x9216D5D9, 0x8979FB1B }, + + KS0 = { 0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7, 0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99, 0x24A19947, + 0xB3916CF7, 0x0801F2E2, 0x858EFC16, 0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E, 0x0D95748F, 0x728EB658, + 0x718BCD58, 0x82154AEE, 0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013, 0xC5D1B023, 0x286085F0, 0xCA417918, + 0xB8DB38EF, 0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E, 0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60, + 0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440, 0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE, 0xA15486AF, + 0x7C72E993, 0xB3EE1411, 0x636FBC2A, 0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E, 0xAFD6BA33, 0x6C24CF5C, + 0x7A325381, 0x28958677, 0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193, 0x61D809CC, 0xFB21A991, 0x487CAC60, + 0x5DEC8032, 0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88, 0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239, + 0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E, 0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0, 0x6A51A0D2, + 0xD8542F68, 0x960FA728, 0xAB5133A3, 0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98, 0xA1F1651D, 0x39AF0176, + 0x66CA593E, 0x82430E88, 0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE, 0xE06F75D8, 0x85C12073, 0x401A449F, + 0x56C16AA6, 0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D, 0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B, + 0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7, 0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA, 0xC1A94FB6, + 0x409F60C4, 0x5E5C9EC2, 0x196A2463, 0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F, 0x6DFC511F, 0x9B30952C, + 0xCC814544, 0xAF5EBD09, 0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3, 0xC0CBA857, 0x45C8740F, 0xD20B5F39, + 0xB9D3FBDB, 0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279, 0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8, + 0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB, 0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82, 0x9E5C57BB, + 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB, 0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573, 0x695B27B0, 0xBBCA58C8, + 0xE1FFA35D, 0xB8F011A0, 0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B, 0x9A53E479, 0xB6F84565, 0xD28E49BC, + 0x4BFB9790, 0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8, 0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4, + 0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0, 0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7, 0x8FF6E2FB, + 0xF2122B64, 0x8888B812, 0x900DF01C, 0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD, 0x2F2F2218, 0xBE0E1777, + 0xEA752DFE, 0x8B021FA1, 0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299, 0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81, + 0xD2ADA8D9, 0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477, 0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF, + 0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49, 0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF, 0x2464369B, + 0xF009B91E, 0x5563911D, 0x59DFA6AA, 0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5, 0x83260376, 0x6295CFA9, + 0x11C81968, 0x4E734A41, 0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915, 0xD60F573F, 0xBC9BC6E4, 0x2B60A476, + 0x81E67400, 0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915, 0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664, + 0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A }, + + KS1 = { 0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623, 0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266, 0xECAA8C71, + 0x699A17FF, 0x5664526C, 0xC2B19EE1, 0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E, 0x3F54989A, 0x5B429D65, + 0x6B8FE4D6, 0x99F73FD6, 0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1, 0x4CDD2086, 0x8470EB26, 0x6382E9C6, + 0x021ECC5E, 0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1, 0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737, + 0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8, 0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF, 0xAE0CF51A, + 0x3CB574B2, 0x25837A58, 0xDC0921BD, 0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701, 0x3AE5E581, 0x37C2DADC, + 0xC8B57634, 0x9AF3DDA7, 0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41, 0xE238CD99, 0x3BEA0E2F, 0x3280BBA1, + 0x183EB331, 0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF, 0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF, + 0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E, 0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87, 0x7A584718, + 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C, 0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2, 0xEF1C1847, 0x3215D908, + 0xDD433B37, 0x24C2BA16, 0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD, 0x71DFF89E, 0x10314E55, 0x81AC77D6, + 0x5F11199B, 0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509, 0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E, + 0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3, 0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F, 0x803E89D6, + 0x5266C825, 0x2E4CC978, 0x9C10B36A, 0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4, 0xF2F74EA7, 0x361D2B3D, + 0x1939260F, 0x19C27960, 0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66, 0xE3BC4595, 0xA67BC883, 0xB17F37D1, + 0x018CFF28, 0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802, 0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84, + 0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510, 0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF, 0xB5735C90, + 0x4C70A239, 0xD59E9E0B, 0xCBAADE14, 0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E, 0x648B1EAF, 0x19BDF0CA, + 0xA02369B9, 0x655ABB50, 0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7, 0x9B540B19, 0x875FA099, 0x95F7997E, + 0x623D7DA8, 0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281, 0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99, + 0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696, 0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128, 0x58EBF2EF, + 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73, 0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0, 0x45EEE2B6, 0xA3AAABEA, + 0xDB6C4F15, 0xFACB4FD0, 0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105, 0xD81E799E, 0x86854DC7, 0xE44B476A, + 0x3D816250, 0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3, 0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285, + 0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00, 0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061, 0x3372F092, + 0x8D937E41, 0xD65FECF1, 0x6C223BDB, 0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E, 0xA6078084, 0x19F8509E, + 0xE8EFD855, 0x61D99735, 0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC, 0x9E447A2E, 0xC3453484, 0xFDD56705, + 0x0E1E9EC9, 0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340, 0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20, + 0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7 }, + + KS2 = { 0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934, 0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068, 0xD4082471, + 0x3320F46A, 0x43B7D4B7, 0x500061AF, 0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840, 0x4D95FC1D, 0x96B591AF, + 0x70F4DDD3, 0x66A02F45, 0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504, 0x96EB27B3, 0x55FD3941, 0xDA2547E6, + 0xABCA0A9A, 0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB, 0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE, + 0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6, 0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42, 0x20FE9E35, + 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B, 0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2, 0x3A6EFA74, 0xDD5B4332, + 0x6841E7F7, 0xCA7820FB, 0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527, 0x55533A3A, 0x20838D87, 0xFE6BA9B7, + 0xD096954B, 0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33, 0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C, + 0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3, 0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC, 0x07F9C9EE, + 0x41041F0F, 0x404779A4, 0x5D886E17, 0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564, 0x257B7834, 0x602A9C60, + 0xDFF8E8A3, 0x1F636C1B, 0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115, 0x6B2395E0, 0x333E92E1, 0x3B240B62, + 0xEEBEB922, 0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728, 0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0, + 0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E, 0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37, 0xA812DC60, + 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D, 0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804, 0xF1290DC7, 0xCC00FFA3, + 0xB5390F92, 0x690FED0B, 0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3, 0xBB132F88, 0x515BAD24, 0x7B9479BF, + 0x763BD6EB, 0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D, 0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C, + 0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350, 0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9, 0x44421659, + 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A, 0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE, 0x9DBC8057, 0xF0F7C086, + 0x60787BF8, 0x6003604D, 0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC, 0x83426B33, 0xF01EAB71, 0xB0804187, + 0x3C005E5F, 0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61, 0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2, + 0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9, 0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2, 0x466E598E, + 0x20B45770, 0x8CD55591, 0xC902DE4C, 0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E, 0xB77F19B6, 0xE0A9DC09, + 0x662D09A1, 0xC4324633, 0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10, 0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F, + 0x2868F169, 0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52, 0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027, + 0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5, 0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62, 0x11E69ED7, + 0x2338EA63, 0x53C2DD94, 0xC2C21634, 0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76, 0x6F05E409, 0x4B7C0188, + 0x39720A3D, 0x7C927C24, 0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC, 0xED545578, 0x08FCA5B5, 0xD83D7CD3, + 0x4DAD0FC4, 0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C, 0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837, + 0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0 }, + + KS3 = { 0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B, 0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE, 0xD5118E9D, + 0xBF0F7315, 0xD62D1C7E, 0xC700C47B, 0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4, 0x5748AB2F, 0xBC946E79, + 0xC6A376D2, 0x6549C2C8, 0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6, 0x2939BBDB, 0xA9BA4650, 0xAC9526E8, + 0xBE5EE304, 0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22, 0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4, + 0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6, 0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9, 0xC72FEFD3, + 0xF752F7DA, 0x3F046F69, 0x77FA0A59, 0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593, 0xE990FD5A, 0x9E34D797, + 0x2CF0B7D9, 0x022B8B51, 0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28, 0x1F9F25CF, 0xADF2B89B, 0x5AD6B472, + 0x5A88F54C, 0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B, 0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28, + 0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C, 0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD, 0xC3EB9E15, + 0x3C9057A2, 0x97271AEC, 0xA93A072A, 0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319, 0x7533D928, 0xB155FDF5, + 0x03563482, 0x8ABA3CBB, 0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F, 0x4DE81751, 0x3830DC8E, 0x379D5862, + 0x9320F991, 0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32, 0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680, + 0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166, 0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE, 0x5BBEF7DD, + 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB, 0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5, 0x72EACEA8, 0xFA6484BB, + 0x8D6612AE, 0xBF3C6F47, 0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370, 0x740E0D8D, 0xE75B1357, 0xF8721671, + 0xAF537D5D, 0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84, 0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048, + 0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8, 0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD, 0xA08839E1, + 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9, 0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7, 0x1A908749, 0xD44FBD9A, + 0xD0DADECB, 0xD50ADA38, 0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F, 0xF79E59B7, 0x43F5BB3A, 0xF2D519FF, + 0x27D9459C, 0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525, 0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1, + 0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442, 0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964, 0x9F1F9532, + 0xE0D392DF, 0xD3A0342B, 0x8971F21E, 0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8, 0xDF359F8D, 0x9B992F2E, + 0xE60B6F47, 0x0FE3F11D, 0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F, 0x1618B166, 0xFD2C1D05, 0x848FD2C5, + 0xF6FB2299, 0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02, 0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC, + 0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614, 0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A, 0xC9AA53FD, + 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6, 0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B, 0x53113EC0, 0x1640E3D3, + 0x38ABBD60, 0x2547ADF0, 0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060, 0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0, + 0x4CF9AA7E, 0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9, 0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F, + 0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6 }; + + // ==================================== + // Useful constants + // ==================================== + + private static final int ROUNDS = 16; + private static final int BLOCK_SIZE = 8; // bytes = 64 bits + private static final int SBOX_SK = 256; + private static final int P_SZ = ROUNDS + 2; + + private final int[] S0, S1, S2, S3; // the s-boxes + private final int[] P; // the p-array + + private boolean doEncrypt = false; + + private byte[] workingKey = null; + + public BlowFish() + { + S0 = new int[SBOX_SK]; + S1 = new int[SBOX_SK]; + S2 = new int[SBOX_SK]; + S3 = new int[SBOX_SK]; + P = new int[P_SZ]; + } + + /** + * initialise a Blowfish cipher. + * + * @param encrypting + * whether or not we are for encryption. + * @param key + * the key required to set up the cipher. + * @exception IllegalArgumentException + * if the params argument is inappropriate. + */ + public void init(boolean encrypting, byte[] key) + { + this.doEncrypt = encrypting; + this.workingKey = key; + setKey(this.workingKey); + } + + public String getAlgorithmName() + { + return "Blowfish"; + } + + public final void transformBlock(byte[] in, int inOff, byte[] out, int outOff) + { + if (workingKey == null) + { + throw new IllegalStateException("Blowfish not initialised"); + } + + if (doEncrypt) + { + encryptBlock(in, inOff, out, outOff); + } + else + { + decryptBlock(in, inOff, out, outOff); + } + } + + public void reset() + { + } + + public int getBlockSize() + { + return BLOCK_SIZE; + } + + // ================================== + // Private Implementation + // ================================== + + private int F(int x) + { + return (((S0[(x >>> 24)] + S1[(x >>> 16) & 0xff]) ^ S2[(x >>> 8) & 0xff]) + S3[x & 0xff]); + } + + /** + * apply the encryption cycle to each value pair in the table. + */ + private void processTable(int xl, int xr, int[] table) + { + int size = table.length; + + for (int s = 0; s < size; s += 2) + { + xl ^= P[0]; + + for (int i = 1; i < ROUNDS; i += 2) + { + xr ^= F(xl) ^ P[i]; + xl ^= F(xr) ^ P[i + 1]; + } + + xr ^= P[ROUNDS + 1]; + + table[s] = xr; + table[s + 1] = xl; + + xr = xl; // end of cycle swap + xl = table[s]; + } + } + + private void setKey(byte[] key) + { + /* + * - comments are from _Applied Crypto_, Schneier, p338 please be + * careful comparing the two, AC numbers the arrays from 1, the enclosed + * code from 0. + * + * (1) Initialise the S-boxes and the P-array, with a fixed string This + * string contains the hexadecimal digits of pi (3.141...) + */ + System.arraycopy(KS0, 0, S0, 0, SBOX_SK); + System.arraycopy(KS1, 0, S1, 0, SBOX_SK); + System.arraycopy(KS2, 0, S2, 0, SBOX_SK); + System.arraycopy(KS3, 0, S3, 0, SBOX_SK); + + System.arraycopy(KP, 0, P, 0, P_SZ); + + /* + * (2) Now, XOR P[0] with the first 32 bits of the key, XOR P[1] with + * the second 32-bits of the key, and so on for all bits of the key (up + * to P[17]). Repeatedly cycle through the key bits until the entire + * P-array has been XOR-ed with the key bits + */ + int keyLength = key.length; + int keyIndex = 0; + + for (int i = 0; i < P_SZ; i++) + { + // get the 32 bits of the key, in 4 * 8 bit chunks + int data = 0x0000000; + for (int j = 0; j < 4; j++) + { + // create a 32 bit block + data = (data << 8) | (key[keyIndex++] & 0xff); + + // wrap when we get to the end of the key + if (keyIndex >= keyLength) + { + keyIndex = 0; + } + } + // XOR the newly created 32 bit chunk onto the P-array + P[i] ^= data; + } + + /* + * (3) Encrypt the all-zero string with the Blowfish algorithm, using + * the subkeys described in (1) and (2) + * + * (4) Replace P1 and P2 with the output of step (3) + * + * (5) Encrypt the output of step(3) using the Blowfish algorithm, with + * the modified subkeys. + * + * (6) Replace P3 and P4 with the output of step (5) + * + * (7) Continue the process, replacing all elements of the P-array and + * then all four S-boxes in order, with the output of the continuously + * changing Blowfish algorithm + */ + + processTable(0, 0, P); + processTable(P[P_SZ - 2], P[P_SZ - 1], S0); + processTable(S0[SBOX_SK - 2], S0[SBOX_SK - 1], S1); + processTable(S1[SBOX_SK - 2], S1[SBOX_SK - 1], S2); + processTable(S2[SBOX_SK - 2], S2[SBOX_SK - 1], S3); + } + + /** + * Encrypt the given input starting at the given offset and place the result + * in the provided buffer starting at the given offset. The input will be an + * exact multiple of our blocksize. + */ + private void encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex) + { + int xl = BytesTo32bits(src, srcIndex); + int xr = BytesTo32bits(src, srcIndex + 4); + + xl ^= P[0]; + + for (int i = 1; i < ROUNDS; i += 2) + { + xr ^= F(xl) ^ P[i]; + xl ^= F(xr) ^ P[i + 1]; + } + + xr ^= P[ROUNDS + 1]; + + Bits32ToBytes(xr, dst, dstIndex); + Bits32ToBytes(xl, dst, dstIndex + 4); + } + + /** + * Decrypt the given input starting at the given offset and place the result + * in the provided buffer starting at the given offset. The input will be an + * exact multiple of our blocksize. + */ + private void decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex) + { + int xl = BytesTo32bits(src, srcIndex); + int xr = BytesTo32bits(src, srcIndex + 4); + + xl ^= P[ROUNDS + 1]; + + for (int i = ROUNDS; i > 0; i -= 2) + { + xr ^= F(xl) ^ P[i]; + xl ^= F(xr) ^ P[i - 1]; + } + + xr ^= P[0]; + + Bits32ToBytes(xr, dst, dstIndex); + Bits32ToBytes(xl, dst, dstIndex + 4); + } + + private int BytesTo32bits(byte[] b, int i) + { + return ((b[i] & 0xff) << 24) | ((b[i + 1] & 0xff) << 16) | ((b[i + 2] & 0xff) << 8) | ((b[i + 3] & 0xff)); + } + + private void Bits32ToBytes(int in, byte[] b, int offset) + { + b[offset + 3] = (byte) in; + b[offset + 2] = (byte) (in >> 8); + b[offset + 1] = (byte) (in >> 16); + b[offset] = (byte) (in >> 24); + } + +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java index 60889f0..0ae51b3 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java @@ -1,78 +1,78 @@ -package com.trilead.ssh2.crypto.cipher;
-
-/**
- * CBCMode.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CBCMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CBCMode implements BlockCipher
-{
- BlockCipher tc;
- int blockSize;
- boolean doEncrypt;
-
- byte[] cbc_vector;
- byte[] tmp_vector;
-
- public void init(boolean forEncryption, byte[] key)
- {
- }
-
- public CBCMode(BlockCipher tc, byte[] iv, boolean doEncrypt)
- throws IllegalArgumentException
- {
- this.tc = tc;
- this.blockSize = tc.getBlockSize();
- this.doEncrypt = doEncrypt;
-
- if (this.blockSize != iv.length)
- throw new IllegalArgumentException("IV must be " + blockSize
- + " bytes long! (currently " + iv.length + ")");
-
- this.cbc_vector = new byte[blockSize];
- this.tmp_vector = new byte[blockSize];
- System.arraycopy(iv, 0, cbc_vector, 0, blockSize);
- }
-
- public int getBlockSize()
- {
- return blockSize;
- }
-
- private void encryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- for (int i = 0; i < blockSize; i++)
- cbc_vector[i] ^= src[srcoff + i];
-
- tc.transformBlock(cbc_vector, 0, dst, dstoff);
-
- System.arraycopy(dst, dstoff, cbc_vector, 0, blockSize);
- }
-
- private void decryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- /* Assume the worst, src and dst are overlapping... */
-
- System.arraycopy(src, srcoff, tmp_vector, 0, blockSize);
-
- tc.transformBlock(src, srcoff, dst, dstoff);
-
- for (int i = 0; i < blockSize; i++)
- dst[dstoff + i] ^= cbc_vector[i];
-
- /* ...that is why we need a tmp buffer. */
-
- byte[] swap = cbc_vector;
- cbc_vector = tmp_vector;
- tmp_vector = swap;
- }
-
- public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- if (doEncrypt)
- encryptBlock(src, srcoff, dst, dstoff);
- else
- decryptBlock(src, srcoff, dst, dstoff);
- }
-}
+package com.trilead.ssh2.crypto.cipher; + +/** + * CBCMode. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: CBCMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class CBCMode implements BlockCipher +{ + BlockCipher tc; + int blockSize; + boolean doEncrypt; + + byte[] cbc_vector; + byte[] tmp_vector; + + public void init(boolean forEncryption, byte[] key) + { + } + + public CBCMode(BlockCipher tc, byte[] iv, boolean doEncrypt) + throws IllegalArgumentException + { + this.tc = tc; + this.blockSize = tc.getBlockSize(); + this.doEncrypt = doEncrypt; + + if (this.blockSize != iv.length) + throw new IllegalArgumentException("IV must be " + blockSize + + " bytes long! (currently " + iv.length + ")"); + + this.cbc_vector = new byte[blockSize]; + this.tmp_vector = new byte[blockSize]; + System.arraycopy(iv, 0, cbc_vector, 0, blockSize); + } + + public int getBlockSize() + { + return blockSize; + } + + private void encryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + for (int i = 0; i < blockSize; i++) + cbc_vector[i] ^= src[srcoff + i]; + + tc.transformBlock(cbc_vector, 0, dst, dstoff); + + System.arraycopy(dst, dstoff, cbc_vector, 0, blockSize); + } + + private void decryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + /* Assume the worst, src and dst are overlapping... */ + + System.arraycopy(src, srcoff, tmp_vector, 0, blockSize); + + tc.transformBlock(src, srcoff, dst, dstoff); + + for (int i = 0; i < blockSize; i++) + dst[dstoff + i] ^= cbc_vector[i]; + + /* ...that is why we need a tmp buffer. */ + + byte[] swap = cbc_vector; + cbc_vector = tmp_vector; + tmp_vector = swap; + } + + public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + if (doEncrypt) + encryptBlock(src, srcoff, dst, dstoff); + else + decryptBlock(src, srcoff, dst, dstoff); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java index d456095..8541c8d 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java @@ -1,62 +1,62 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-/**
- * This is CTR mode as described in draft-ietf-secsh-newmodes-XY.txt
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CTRMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CTRMode implements BlockCipher
-{
- byte[] X;
- byte[] Xenc;
-
- BlockCipher bc;
- int blockSize;
- boolean doEncrypt;
-
- int count = 0;
-
- public void init(boolean forEncryption, byte[] key)
- {
- }
-
- public CTRMode(BlockCipher tc, byte[] iv, boolean doEnc) throws IllegalArgumentException
- {
- bc = tc;
- blockSize = bc.getBlockSize();
- doEncrypt = doEnc;
-
- if (blockSize != iv.length)
- throw new IllegalArgumentException("IV must be " + blockSize + " bytes long! (currently " + iv.length + ")");
-
- X = new byte[blockSize];
- Xenc = new byte[blockSize];
-
- System.arraycopy(iv, 0, X, 0, blockSize);
- }
-
- public final int getBlockSize()
- {
- return blockSize;
- }
-
- public final void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- bc.transformBlock(X, 0, Xenc, 0);
-
- for (int i = 0; i < blockSize; i++)
- {
- dst[dstoff + i] = (byte) (src[srcoff + i] ^ Xenc[i]);
- }
-
- for (int i = (blockSize - 1); i >= 0; i--)
- {
- X[i]++;
- if (X[i] != 0)
- break;
-
- }
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +/** + * This is CTR mode as described in draft-ietf-secsh-newmodes-XY.txt + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: CTRMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class CTRMode implements BlockCipher +{ + byte[] X; + byte[] Xenc; + + BlockCipher bc; + int blockSize; + boolean doEncrypt; + + int count = 0; + + public void init(boolean forEncryption, byte[] key) + { + } + + public CTRMode(BlockCipher tc, byte[] iv, boolean doEnc) throws IllegalArgumentException + { + bc = tc; + blockSize = bc.getBlockSize(); + doEncrypt = doEnc; + + if (blockSize != iv.length) + throw new IllegalArgumentException("IV must be " + blockSize + " bytes long! (currently " + iv.length + ")"); + + X = new byte[blockSize]; + Xenc = new byte[blockSize]; + + System.arraycopy(iv, 0, X, 0, blockSize); + } + + public final int getBlockSize() + { + return blockSize; + } + + public final void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + bc.transformBlock(X, 0, Xenc, 0); + + for (int i = 0; i < blockSize; i++) + { + dst[dstoff + i] = (byte) (src[srcoff + i] ^ Xenc[i]); + } + + for (int i = (blockSize - 1); i >= 0; i--) + { + X[i]++; + if (X[i] != 0) + break; + + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java index 34af1e7..c9055ab 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java @@ -1,144 +1,144 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * CipherInputStream.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CipherInputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CipherInputStream
-{
- BlockCipher currentCipher;
- InputStream bi;
- byte[] buffer;
- byte[] enc;
- int blockSize;
- int pos;
-
- /*
- * We cannot use java.io.BufferedInputStream, since that is not available in
- * J2ME. Everything could be improved alot here.
- */
-
- final int BUFF_SIZE = 2048;
- byte[] input_buffer = new byte[BUFF_SIZE];
- int input_buffer_pos = 0;
- int input_buffer_size = 0;
-
- public CipherInputStream(BlockCipher tc, InputStream bi)
- {
- this.bi = bi;
- changeCipher(tc);
- }
-
- private int fill_buffer() throws IOException
- {
- input_buffer_pos = 0;
- input_buffer_size = bi.read(input_buffer, 0, BUFF_SIZE);
- return input_buffer_size;
- }
-
- private int internal_read(byte[] b, int off, int len) throws IOException
- {
- if (input_buffer_size < 0)
- return -1;
-
- if (input_buffer_pos >= input_buffer_size)
- {
- if (fill_buffer() <= 0)
- return -1;
- }
-
- int avail = input_buffer_size - input_buffer_pos;
- int thiscopy = (len > avail) ? avail : len;
-
- System.arraycopy(input_buffer, input_buffer_pos, b, off, thiscopy);
- input_buffer_pos += thiscopy;
-
- return thiscopy;
- }
-
- public void changeCipher(BlockCipher bc)
- {
- this.currentCipher = bc;
- blockSize = bc.getBlockSize();
- buffer = new byte[blockSize];
- enc = new byte[blockSize];
- pos = blockSize;
- }
-
- private void getBlock() throws IOException
- {
- int n = 0;
- while (n < blockSize)
- {
- int len = internal_read(enc, n, blockSize - n);
- if (len < 0)
- throw new IOException("Cannot read full block, EOF reached.");
- n += len;
- }
-
- try
- {
- currentCipher.transformBlock(enc, 0, buffer, 0);
- }
- catch (Exception e)
- {
- throw new IOException("Error while decrypting block.");
- }
- pos = 0;
- }
-
- public int read(byte[] dst) throws IOException
- {
- return read(dst, 0, dst.length);
- }
-
- public int read(byte[] dst, int off, int len) throws IOException
- {
- int count = 0;
-
- while (len > 0)
- {
- if (pos >= blockSize)
- getBlock();
-
- int avail = blockSize - pos;
- int copy = Math.min(avail, len);
- System.arraycopy(buffer, pos, dst, off, copy);
- pos += copy;
- off += copy;
- len -= copy;
- count += copy;
- }
- return count;
- }
-
- public int read() throws IOException
- {
- if (pos >= blockSize)
- {
- getBlock();
- }
- return buffer[pos++] & 0xff;
- }
-
- public int readPlain(byte[] b, int off, int len) throws IOException
- {
- if (pos != blockSize)
- throw new IOException("Cannot read plain since crypto buffer is not aligned.");
- int n = 0;
- while (n < len)
- {
- int cnt = internal_read(b, off + n, len - n);
- if (cnt < 0)
- throw new IOException("Cannot fill buffer, EOF reached.");
- n += cnt;
- }
- return n;
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +import java.io.IOException; +import java.io.InputStream; + +/** + * CipherInputStream. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: CipherInputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class CipherInputStream +{ + BlockCipher currentCipher; + InputStream bi; + byte[] buffer; + byte[] enc; + int blockSize; + int pos; + + /* + * We cannot use java.io.BufferedInputStream, since that is not available in + * J2ME. Everything could be improved alot here. + */ + + final int BUFF_SIZE = 2048; + byte[] input_buffer = new byte[BUFF_SIZE]; + int input_buffer_pos = 0; + int input_buffer_size = 0; + + public CipherInputStream(BlockCipher tc, InputStream bi) + { + this.bi = bi; + changeCipher(tc); + } + + private int fill_buffer() throws IOException + { + input_buffer_pos = 0; + input_buffer_size = bi.read(input_buffer, 0, BUFF_SIZE); + return input_buffer_size; + } + + private int internal_read(byte[] b, int off, int len) throws IOException + { + if (input_buffer_size < 0) + return -1; + + if (input_buffer_pos >= input_buffer_size) + { + if (fill_buffer() <= 0) + return -1; + } + + int avail = input_buffer_size - input_buffer_pos; + int thiscopy = (len > avail) ? avail : len; + + System.arraycopy(input_buffer, input_buffer_pos, b, off, thiscopy); + input_buffer_pos += thiscopy; + + return thiscopy; + } + + public void changeCipher(BlockCipher bc) + { + this.currentCipher = bc; + blockSize = bc.getBlockSize(); + buffer = new byte[blockSize]; + enc = new byte[blockSize]; + pos = blockSize; + } + + private void getBlock() throws IOException + { + int n = 0; + while (n < blockSize) + { + int len = internal_read(enc, n, blockSize - n); + if (len < 0) + throw new IOException("Cannot read full block, EOF reached."); + n += len; + } + + try + { + currentCipher.transformBlock(enc, 0, buffer, 0); + } + catch (Exception e) + { + throw new IOException("Error while decrypting block."); + } + pos = 0; + } + + public int read(byte[] dst) throws IOException + { + return read(dst, 0, dst.length); + } + + public int read(byte[] dst, int off, int len) throws IOException + { + int count = 0; + + while (len > 0) + { + if (pos >= blockSize) + getBlock(); + + int avail = blockSize - pos; + int copy = Math.min(avail, len); + System.arraycopy(buffer, pos, dst, off, copy); + pos += copy; + off += copy; + len -= copy; + count += copy; + } + return count; + } + + public int read() throws IOException + { + if (pos >= blockSize) + { + getBlock(); + } + return buffer[pos++] & 0xff; + } + + public int readPlain(byte[] b, int off, int len) throws IOException + { + if (pos != blockSize) + throw new IOException("Cannot read plain since crypto buffer is not aligned."); + int n = 0; + while (n < len) + { + int cnt = internal_read(b, off + n, len - n); + if (cnt < 0) + throw new IOException("Cannot fill buffer, EOF reached."); + n += cnt; + } + return n; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java index 9db88c2..cf0db4a 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java @@ -1,142 +1,142 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-/**
- * CipherOutputStream.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CipherOutputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CipherOutputStream
-{
- BlockCipher currentCipher;
- OutputStream bo;
- byte[] buffer;
- byte[] enc;
- int blockSize;
- int pos;
-
- /*
- * We cannot use java.io.BufferedOutputStream, since that is not available
- * in J2ME. Everything could be improved here alot.
- */
-
- final int BUFF_SIZE = 2048;
- byte[] out_buffer = new byte[BUFF_SIZE];
- int out_buffer_pos = 0;
-
- public CipherOutputStream(BlockCipher tc, OutputStream bo)
- {
- this.bo = bo;
- changeCipher(tc);
- }
-
- private void internal_write(byte[] src, int off, int len) throws IOException
- {
- while (len > 0)
- {
- int space = BUFF_SIZE - out_buffer_pos;
- int copy = (len > space) ? space : len;
-
- System.arraycopy(src, off, out_buffer, out_buffer_pos, copy);
-
- off += copy;
- out_buffer_pos += copy;
- len -= copy;
-
- if (out_buffer_pos >= BUFF_SIZE)
- {
- bo.write(out_buffer, 0, BUFF_SIZE);
- out_buffer_pos = 0;
- }
- }
- }
-
- private void internal_write(int b) throws IOException
- {
- out_buffer[out_buffer_pos++] = (byte) b;
- if (out_buffer_pos >= BUFF_SIZE)
- {
- bo.write(out_buffer, 0, BUFF_SIZE);
- out_buffer_pos = 0;
- }
- }
-
- public void flush() throws IOException
- {
- if (pos != 0)
- throw new IOException("FATAL: cannot flush since crypto buffer is not aligned.");
-
- if (out_buffer_pos > 0)
- {
- bo.write(out_buffer, 0, out_buffer_pos);
- out_buffer_pos = 0;
- }
- bo.flush();
- }
-
- public void changeCipher(BlockCipher bc)
- {
- this.currentCipher = bc;
- blockSize = bc.getBlockSize();
- buffer = new byte[blockSize];
- enc = new byte[blockSize];
- pos = 0;
- }
-
- private void writeBlock() throws IOException
- {
- try
- {
- currentCipher.transformBlock(buffer, 0, enc, 0);
- }
- catch (Exception e)
- {
- throw (IOException) new IOException("Error while decrypting block.").initCause(e);
- }
-
- internal_write(enc, 0, blockSize);
- pos = 0;
- }
-
- public void write(byte[] src, int off, int len) throws IOException
- {
- while (len > 0)
- {
- int avail = blockSize - pos;
- int copy = Math.min(avail, len);
-
- System.arraycopy(src, off, buffer, pos, copy);
- pos += copy;
- off += copy;
- len -= copy;
-
- if (pos >= blockSize)
- writeBlock();
- }
- }
-
- public void write(int b) throws IOException
- {
- buffer[pos++] = (byte) b;
- if (pos >= blockSize)
- writeBlock();
- }
-
- public void writePlain(int b) throws IOException
- {
- if (pos != 0)
- throw new IOException("Cannot write plain since crypto buffer is not aligned.");
- internal_write(b);
- }
-
- public void writePlain(byte[] b, int off, int len) throws IOException
- {
- if (pos != 0)
- throw new IOException("Cannot write plain since crypto buffer is not aligned.");
- internal_write(b, off, len);
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +import java.io.IOException; +import java.io.OutputStream; + +/** + * CipherOutputStream. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: CipherOutputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class CipherOutputStream +{ + BlockCipher currentCipher; + OutputStream bo; + byte[] buffer; + byte[] enc; + int blockSize; + int pos; + + /* + * We cannot use java.io.BufferedOutputStream, since that is not available + * in J2ME. Everything could be improved here alot. + */ + + final int BUFF_SIZE = 2048; + byte[] out_buffer = new byte[BUFF_SIZE]; + int out_buffer_pos = 0; + + public CipherOutputStream(BlockCipher tc, OutputStream bo) + { + this.bo = bo; + changeCipher(tc); + } + + private void internal_write(byte[] src, int off, int len) throws IOException + { + while (len > 0) + { + int space = BUFF_SIZE - out_buffer_pos; + int copy = (len > space) ? space : len; + + System.arraycopy(src, off, out_buffer, out_buffer_pos, copy); + + off += copy; + out_buffer_pos += copy; + len -= copy; + + if (out_buffer_pos >= BUFF_SIZE) + { + bo.write(out_buffer, 0, BUFF_SIZE); + out_buffer_pos = 0; + } + } + } + + private void internal_write(int b) throws IOException + { + out_buffer[out_buffer_pos++] = (byte) b; + if (out_buffer_pos >= BUFF_SIZE) + { + bo.write(out_buffer, 0, BUFF_SIZE); + out_buffer_pos = 0; + } + } + + public void flush() throws IOException + { + if (pos != 0) + throw new IOException("FATAL: cannot flush since crypto buffer is not aligned."); + + if (out_buffer_pos > 0) + { + bo.write(out_buffer, 0, out_buffer_pos); + out_buffer_pos = 0; + } + bo.flush(); + } + + public void changeCipher(BlockCipher bc) + { + this.currentCipher = bc; + blockSize = bc.getBlockSize(); + buffer = new byte[blockSize]; + enc = new byte[blockSize]; + pos = 0; + } + + private void writeBlock() throws IOException + { + try + { + currentCipher.transformBlock(buffer, 0, enc, 0); + } + catch (Exception e) + { + throw (IOException) new IOException("Error while decrypting block.").initCause(e); + } + + internal_write(enc, 0, blockSize); + pos = 0; + } + + public void write(byte[] src, int off, int len) throws IOException + { + while (len > 0) + { + int avail = blockSize - pos; + int copy = Math.min(avail, len); + + System.arraycopy(src, off, buffer, pos, copy); + pos += copy; + off += copy; + len -= copy; + + if (pos >= blockSize) + writeBlock(); + } + } + + public void write(int b) throws IOException + { + buffer[pos++] = (byte) b; + if (pos >= blockSize) + writeBlock(); + } + + public void writePlain(int b) throws IOException + { + if (pos != 0) + throw new IOException("Cannot write plain since crypto buffer is not aligned."); + internal_write(b); + } + + public void writePlain(byte[] b, int off, int len) throws IOException + { + if (pos != 0) + throw new IOException("Cannot write plain since crypto buffer is not aligned."); + internal_write(b, off, len); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java index 20480d3..6588459 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java @@ -1,373 +1,373 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file is based on the 3DES implementation from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- */
-
-/**
- * DES.
- *
- * @author See comments in the source file
- * @version $Id: DES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class DES implements BlockCipher
-{
- private int[] workingKey = null;
-
- /**
- * standard constructor.
- */
- public DES()
- {
- }
-
- /**
- * initialise a DES cipher.
- *
- * @param encrypting
- * whether or not we are for encryption.
- * @param key
- * the parameters required to set up the cipher.
- * @exception IllegalArgumentException
- * if the params argument is inappropriate.
- */
- public void init(boolean encrypting, byte[] key)
- {
- this.workingKey = generateWorkingKey(encrypting, key, 0);
- }
-
- public String getAlgorithmName()
- {
- return "DES";
- }
-
- public int getBlockSize()
- {
- return 8;
- }
-
- public void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
- {
- if (workingKey == null)
- {
- throw new IllegalStateException("DES engine not initialised!");
- }
-
- desFunc(workingKey, in, inOff, out, outOff);
- }
-
- public void reset()
- {
- }
-
- /**
- * what follows is mainly taken from "Applied Cryptography", by Bruce
- * Schneier, however it also bears great resemblance to Richard
- * Outerbridge's D3DES...
- */
-
- static short[] Df_Key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32,
- 0x10, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67 };
-
- static short[] bytebit = { 0200, 0100, 040, 020, 010, 04, 02, 01 };
-
- static int[] bigbyte = { 0x800000, 0x400000, 0x200000, 0x100000, 0x80000, 0x40000, 0x20000, 0x10000, 0x8000,
- 0x4000, 0x2000, 0x1000, 0x800, 0x400, 0x200, 0x100, 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1 };
-
- /*
- * Use the key schedule specified in the Standard (ANSI X3.92-1981).
- */
-
- static byte[] pc1 = { 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2,
- 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12,
- 4, 27, 19, 11, 3 };
-
- static byte[] totrot = { 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };
-
- static byte[] pc2 = { 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40,
- 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
-
- static int[] SP1 = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004,
- 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004,
- 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004,
- 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404,
- 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400,
- 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404,
- 0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004,
- 0x00010400, 0x00000000, 0x01010004 };
-
- static int[] SP2 = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020,
- 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020,
- 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020,
- 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020,
- 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020,
- 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020,
- 0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000,
- 0x80100020, 0x80108020, 0x00108000 };
-
- static int[] SP3 = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208,
- 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208,
- 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208,
- 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000,
- 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208,
- 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208,
- 0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208,
- 0x00000008, 0x08020008, 0x00020200 };
-
- static int[] SP4 = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001,
- 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001,
- 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081,
- 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001,
- 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081,
- 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000,
- 0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080,
- 0x00800000, 0x00002000, 0x00802080 };
-
- static int[] SP5 = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000,
- 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000,
- 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000,
- 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100,
- 0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000,
- 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100,
- 0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000,
- 0x40080000, 0x02080100, 0x40000100 };
-
- static int[] SP6 = { 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010,
- 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010,
- 0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010,
- 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010,
- 0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000,
- 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010,
- 0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000,
- 0x20000000, 0x00400010, 0x20004010 };
-
- static int[] SP7 = { 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802,
- 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802,
- 0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000,
- 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800,
- 0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800,
- 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000,
- 0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002,
- 0x04000800, 0x00000800, 0x00200002 };
-
- static int[] SP8 = { 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040,
- 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040,
- 0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040,
- 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000,
- 0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040,
- 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040,
- 0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040,
- 0x00040040, 0x10000000, 0x10041000 };
-
- /**
- * generate an integer based working key based on our secret key and what we
- * processing we are planning to do.
- *
- * Acknowledgements for this routine go to James Gillogly & Phil Karn.
- * (whoever, and wherever they are!).
- */
- protected int[] generateWorkingKey(boolean encrypting, byte[] key, int off)
- {
- int[] newKey = new int[32];
- boolean[] pc1m = new boolean[56], pcr = new boolean[56];
-
- for (int j = 0; j < 56; j++)
- {
- int l = pc1[j];
-
- pc1m[j] = ((key[off + (l >>> 3)] & bytebit[l & 07]) != 0);
- }
-
- for (int i = 0; i < 16; i++)
- {
- int l, m, n;
-
- if (encrypting)
- {
- m = i << 1;
- }
- else
- {
- m = (15 - i) << 1;
- }
-
- n = m + 1;
- newKey[m] = newKey[n] = 0;
-
- for (int j = 0; j < 28; j++)
- {
- l = j + totrot[i];
- if (l < 28)
- {
- pcr[j] = pc1m[l];
- }
- else
- {
- pcr[j] = pc1m[l - 28];
- }
- }
-
- for (int j = 28; j < 56; j++)
- {
- l = j + totrot[i];
- if (l < 56)
- {
- pcr[j] = pc1m[l];
- }
- else
- {
- pcr[j] = pc1m[l - 28];
- }
- }
-
- for (int j = 0; j < 24; j++)
- {
- if (pcr[pc2[j]])
- {
- newKey[m] |= bigbyte[j];
- }
-
- if (pcr[pc2[j + 24]])
- {
- newKey[n] |= bigbyte[j];
- }
- }
- }
-
- //
- // store the processed key
- //
- for (int i = 0; i != 32; i += 2)
- {
- int i1, i2;
-
- i1 = newKey[i];
- i2 = newKey[i + 1];
-
- newKey[i] = ((i1 & 0x00fc0000) << 6) | ((i1 & 0x00000fc0) << 10) | ((i2 & 0x00fc0000) >>> 10)
- | ((i2 & 0x00000fc0) >>> 6);
-
- newKey[i + 1] = ((i1 & 0x0003f000) << 12) | ((i1 & 0x0000003f) << 16) | ((i2 & 0x0003f000) >>> 4)
- | (i2 & 0x0000003f);
- }
-
- return newKey;
- }
-
- /**
- * the DES engine.
- */
- protected void desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff)
- {
- int work, right, left;
-
- left = (in[inOff + 0] & 0xff) << 24;
- left |= (in[inOff + 1] & 0xff) << 16;
- left |= (in[inOff + 2] & 0xff) << 8;
- left |= (in[inOff + 3] & 0xff);
-
- right = (in[inOff + 4] & 0xff) << 24;
- right |= (in[inOff + 5] & 0xff) << 16;
- right |= (in[inOff + 6] & 0xff) << 8;
- right |= (in[inOff + 7] & 0xff);
-
- work = ((left >>> 4) ^ right) & 0x0f0f0f0f;
- right ^= work;
- left ^= (work << 4);
- work = ((left >>> 16) ^ right) & 0x0000ffff;
- right ^= work;
- left ^= (work << 16);
- work = ((right >>> 2) ^ left) & 0x33333333;
- left ^= work;
- right ^= (work << 2);
- work = ((right >>> 8) ^ left) & 0x00ff00ff;
- left ^= work;
- right ^= (work << 8);
- right = ((right << 1) | ((right >>> 31) & 1)) & 0xffffffff;
- work = (left ^ right) & 0xaaaaaaaa;
- left ^= work;
- right ^= work;
- left = ((left << 1) | ((left >>> 31) & 1)) & 0xffffffff;
-
- for (int round = 0; round < 8; round++)
- {
- int fval;
-
- work = (right << 28) | (right >>> 4);
- work ^= wKey[round * 4 + 0];
- fval = SP7[work & 0x3f];
- fval |= SP5[(work >>> 8) & 0x3f];
- fval |= SP3[(work >>> 16) & 0x3f];
- fval |= SP1[(work >>> 24) & 0x3f];
- work = right ^ wKey[round * 4 + 1];
- fval |= SP8[work & 0x3f];
- fval |= SP6[(work >>> 8) & 0x3f];
- fval |= SP4[(work >>> 16) & 0x3f];
- fval |= SP2[(work >>> 24) & 0x3f];
- left ^= fval;
- work = (left << 28) | (left >>> 4);
- work ^= wKey[round * 4 + 2];
- fval = SP7[work & 0x3f];
- fval |= SP5[(work >>> 8) & 0x3f];
- fval |= SP3[(work >>> 16) & 0x3f];
- fval |= SP1[(work >>> 24) & 0x3f];
- work = left ^ wKey[round * 4 + 3];
- fval |= SP8[work & 0x3f];
- fval |= SP6[(work >>> 8) & 0x3f];
- fval |= SP4[(work >>> 16) & 0x3f];
- fval |= SP2[(work >>> 24) & 0x3f];
- right ^= fval;
- }
-
- right = (right << 31) | (right >>> 1);
- work = (left ^ right) & 0xaaaaaaaa;
- left ^= work;
- right ^= work;
- left = (left << 31) | (left >>> 1);
- work = ((left >>> 8) ^ right) & 0x00ff00ff;
- right ^= work;
- left ^= (work << 8);
- work = ((left >>> 2) ^ right) & 0x33333333;
- right ^= work;
- left ^= (work << 2);
- work = ((right >>> 16) ^ left) & 0x0000ffff;
- left ^= work;
- right ^= (work << 16);
- work = ((right >>> 4) ^ left) & 0x0f0f0f0f;
- left ^= work;
- right ^= (work << 4);
-
- out[outOff + 0] = (byte) ((right >>> 24) & 0xff);
- out[outOff + 1] = (byte) ((right >>> 16) & 0xff);
- out[outOff + 2] = (byte) ((right >>> 8) & 0xff);
- out[outOff + 3] = (byte) (right & 0xff);
- out[outOff + 4] = (byte) ((left >>> 24) & 0xff);
- out[outOff + 5] = (byte) ((left >>> 16) & 0xff);
- out[outOff + 6] = (byte) ((left >>> 8) & 0xff);
- out[outOff + 7] = (byte) (left & 0xff);
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +/* + This file is based on the 3DES implementation from the Bouncy Castle Crypto package. + Their licence file states the following: + + Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle + (http://www.bouncycastle.org) + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + */ + +/** + * DES. + * + * @author See comments in the source file + * @version $Id: DES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class DES implements BlockCipher +{ + private int[] workingKey = null; + + /** + * standard constructor. + */ + public DES() + { + } + + /** + * initialise a DES cipher. + * + * @param encrypting + * whether or not we are for encryption. + * @param key + * the parameters required to set up the cipher. + * @exception IllegalArgumentException + * if the params argument is inappropriate. + */ + public void init(boolean encrypting, byte[] key) + { + this.workingKey = generateWorkingKey(encrypting, key, 0); + } + + public String getAlgorithmName() + { + return "DES"; + } + + public int getBlockSize() + { + return 8; + } + + public void transformBlock(byte[] in, int inOff, byte[] out, int outOff) + { + if (workingKey == null) + { + throw new IllegalStateException("DES engine not initialised!"); + } + + desFunc(workingKey, in, inOff, out, outOff); + } + + public void reset() + { + } + + /** + * what follows is mainly taken from "Applied Cryptography", by Bruce + * Schneier, however it also bears great resemblance to Richard + * Outerbridge's D3DES... + */ + + static short[] Df_Key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, + 0x10, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67 }; + + static short[] bytebit = { 0200, 0100, 040, 020, 010, 04, 02, 01 }; + + static int[] bigbyte = { 0x800000, 0x400000, 0x200000, 0x100000, 0x80000, 0x40000, 0x20000, 0x10000, 0x8000, + 0x4000, 0x2000, 0x1000, 0x800, 0x400, 0x200, 0x100, 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1 }; + + /* + * Use the key schedule specified in the Standard (ANSI X3.92-1981). + */ + + static byte[] pc1 = { 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, + 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, + 4, 27, 19, 11, 3 }; + + static byte[] totrot = { 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 }; + + static byte[] pc2 = { 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40, + 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 }; + + static int[] SP1 = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004, + 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004, + 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004, + 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404, + 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400, + 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404, + 0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004, + 0x00010400, 0x00000000, 0x01010004 }; + + static int[] SP2 = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020, + 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020, + 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020, + 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020, + 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020, + 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020, + 0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000, + 0x80100020, 0x80108020, 0x00108000 }; + + static int[] SP3 = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208, + 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208, + 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208, + 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000, + 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208, + 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208, + 0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208, + 0x00000008, 0x08020008, 0x00020200 }; + + static int[] SP4 = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001, + 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001, + 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081, + 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001, + 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081, + 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000, + 0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080, + 0x00800000, 0x00002000, 0x00802080 }; + + static int[] SP5 = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000, + 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000, + 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000, + 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100, + 0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000, + 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100, + 0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000, + 0x40080000, 0x02080100, 0x40000100 }; + + static int[] SP6 = { 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010, + 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010, + 0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010, + 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010, + 0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000, + 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010, + 0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000, + 0x20000000, 0x00400010, 0x20004010 }; + + static int[] SP7 = { 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802, + 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802, + 0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000, + 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800, + 0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800, + 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000, + 0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002, + 0x04000800, 0x00000800, 0x00200002 }; + + static int[] SP8 = { 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040, + 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040, + 0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040, + 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000, + 0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040, + 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040, + 0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040, + 0x00040040, 0x10000000, 0x10041000 }; + + /** + * generate an integer based working key based on our secret key and what we + * processing we are planning to do. + * + * Acknowledgements for this routine go to James Gillogly & Phil Karn. + * (whoever, and wherever they are!). + */ + protected int[] generateWorkingKey(boolean encrypting, byte[] key, int off) + { + int[] newKey = new int[32]; + boolean[] pc1m = new boolean[56], pcr = new boolean[56]; + + for (int j = 0; j < 56; j++) + { + int l = pc1[j]; + + pc1m[j] = ((key[off + (l >>> 3)] & bytebit[l & 07]) != 0); + } + + for (int i = 0; i < 16; i++) + { + int l, m, n; + + if (encrypting) + { + m = i << 1; + } + else + { + m = (15 - i) << 1; + } + + n = m + 1; + newKey[m] = newKey[n] = 0; + + for (int j = 0; j < 28; j++) + { + l = j + totrot[i]; + if (l < 28) + { + pcr[j] = pc1m[l]; + } + else + { + pcr[j] = pc1m[l - 28]; + } + } + + for (int j = 28; j < 56; j++) + { + l = j + totrot[i]; + if (l < 56) + { + pcr[j] = pc1m[l]; + } + else + { + pcr[j] = pc1m[l - 28]; + } + } + + for (int j = 0; j < 24; j++) + { + if (pcr[pc2[j]]) + { + newKey[m] |= bigbyte[j]; + } + + if (pcr[pc2[j + 24]]) + { + newKey[n] |= bigbyte[j]; + } + } + } + + // + // store the processed key + // + for (int i = 0; i != 32; i += 2) + { + int i1, i2; + + i1 = newKey[i]; + i2 = newKey[i + 1]; + + newKey[i] = ((i1 & 0x00fc0000) << 6) | ((i1 & 0x00000fc0) << 10) | ((i2 & 0x00fc0000) >>> 10) + | ((i2 & 0x00000fc0) >>> 6); + + newKey[i + 1] = ((i1 & 0x0003f000) << 12) | ((i1 & 0x0000003f) << 16) | ((i2 & 0x0003f000) >>> 4) + | (i2 & 0x0000003f); + } + + return newKey; + } + + /** + * the DES engine. + */ + protected void desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff) + { + int work, right, left; + + left = (in[inOff + 0] & 0xff) << 24; + left |= (in[inOff + 1] & 0xff) << 16; + left |= (in[inOff + 2] & 0xff) << 8; + left |= (in[inOff + 3] & 0xff); + + right = (in[inOff + 4] & 0xff) << 24; + right |= (in[inOff + 5] & 0xff) << 16; + right |= (in[inOff + 6] & 0xff) << 8; + right |= (in[inOff + 7] & 0xff); + + work = ((left >>> 4) ^ right) & 0x0f0f0f0f; + right ^= work; + left ^= (work << 4); + work = ((left >>> 16) ^ right) & 0x0000ffff; + right ^= work; + left ^= (work << 16); + work = ((right >>> 2) ^ left) & 0x33333333; + left ^= work; + right ^= (work << 2); + work = ((right >>> 8) ^ left) & 0x00ff00ff; + left ^= work; + right ^= (work << 8); + right = ((right << 1) | ((right >>> 31) & 1)) & 0xffffffff; + work = (left ^ right) & 0xaaaaaaaa; + left ^= work; + right ^= work; + left = ((left << 1) | ((left >>> 31) & 1)) & 0xffffffff; + + for (int round = 0; round < 8; round++) + { + int fval; + + work = (right << 28) | (right >>> 4); + work ^= wKey[round * 4 + 0]; + fval = SP7[work & 0x3f]; + fval |= SP5[(work >>> 8) & 0x3f]; + fval |= SP3[(work >>> 16) & 0x3f]; + fval |= SP1[(work >>> 24) & 0x3f]; + work = right ^ wKey[round * 4 + 1]; + fval |= SP8[work & 0x3f]; + fval |= SP6[(work >>> 8) & 0x3f]; + fval |= SP4[(work >>> 16) & 0x3f]; + fval |= SP2[(work >>> 24) & 0x3f]; + left ^= fval; + work = (left << 28) | (left >>> 4); + work ^= wKey[round * 4 + 2]; + fval = SP7[work & 0x3f]; + fval |= SP5[(work >>> 8) & 0x3f]; + fval |= SP3[(work >>> 16) & 0x3f]; + fval |= SP1[(work >>> 24) & 0x3f]; + work = left ^ wKey[round * 4 + 3]; + fval |= SP8[work & 0x3f]; + fval |= SP6[(work >>> 8) & 0x3f]; + fval |= SP4[(work >>> 16) & 0x3f]; + fval |= SP2[(work >>> 24) & 0x3f]; + right ^= fval; + } + + right = (right << 31) | (right >>> 1); + work = (left ^ right) & 0xaaaaaaaa; + left ^= work; + right ^= work; + left = (left << 31) | (left >>> 1); + work = ((left >>> 8) ^ right) & 0x00ff00ff; + right ^= work; + left ^= (work << 8); + work = ((left >>> 2) ^ right) & 0x33333333; + right ^= work; + left ^= (work << 2); + work = ((right >>> 16) ^ left) & 0x0000ffff; + left ^= work; + right ^= (work << 16); + work = ((right >>> 4) ^ left) & 0x0f0f0f0f; + left ^= work; + right ^= (work << 4); + + out[outOff + 0] = (byte) ((right >>> 24) & 0xff); + out[outOff + 1] = (byte) ((right >>> 16) & 0xff); + out[outOff + 2] = (byte) ((right >>> 8) & 0xff); + out[outOff + 3] = (byte) (right & 0xff); + out[outOff + 4] = (byte) ((left >>> 24) & 0xff); + out[outOff + 5] = (byte) ((left >>> 16) & 0xff); + out[outOff + 6] = (byte) ((left >>> 8) & 0xff); + out[outOff + 7] = (byte) (left & 0xff); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java index 6c0d797..f47a636 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java @@ -1,105 +1,105 @@ -
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken (and modified) from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- */
-
-/**
- * DESede.
- *
- * @author See comments in the source file
- * @version $Id: DESede.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class DESede extends DES
-{
- private int[] key1 = null;
- private int[] key2 = null;
- private int[] key3 = null;
-
- private boolean encrypt;
-
- /**
- * standard constructor.
- */
- public DESede()
- {
- }
-
- /**
- * initialise a DES cipher.
- *
- * @param encrypting
- * whether or not we are for encryption.
- * @param key
- * the parameters required to set up the cipher.
- * @exception IllegalArgumentException
- * if the params argument is inappropriate.
- */
- public void init(boolean encrypting, byte[] key)
- {
- key1 = generateWorkingKey(encrypting, key, 0);
- key2 = generateWorkingKey(!encrypting, key, 8);
- key3 = generateWorkingKey(encrypting, key, 16);
-
- encrypt = encrypting;
- }
-
- public String getAlgorithmName()
- {
- return "DESede";
- }
-
- public int getBlockSize()
- {
- return 8;
- }
-
- public void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
- {
- if (key1 == null)
- {
- throw new IllegalStateException("DESede engine not initialised!");
- }
-
- if (encrypt)
- {
- desFunc(key1, in, inOff, out, outOff);
- desFunc(key2, out, outOff, out, outOff);
- desFunc(key3, out, outOff, out, outOff);
- }
- else
- {
- desFunc(key3, in, inOff, out, outOff);
- desFunc(key2, out, outOff, out, outOff);
- desFunc(key1, out, outOff, out, outOff);
- }
- }
-
- public void reset()
- {
- }
-}
+ +package com.trilead.ssh2.crypto.cipher; + +/* + This file was shamelessly taken (and modified) from the Bouncy Castle Crypto package. + Their licence file states the following: + + Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle + (http://www.bouncycastle.org) + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + */ + +/** + * DESede. + * + * @author See comments in the source file + * @version $Id: DESede.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class DESede extends DES +{ + private int[] key1 = null; + private int[] key2 = null; + private int[] key3 = null; + + private boolean encrypt; + + /** + * standard constructor. + */ + public DESede() + { + } + + /** + * initialise a DES cipher. + * + * @param encrypting + * whether or not we are for encryption. + * @param key + * the parameters required to set up the cipher. + * @exception IllegalArgumentException + * if the params argument is inappropriate. + */ + public void init(boolean encrypting, byte[] key) + { + key1 = generateWorkingKey(encrypting, key, 0); + key2 = generateWorkingKey(!encrypting, key, 8); + key3 = generateWorkingKey(encrypting, key, 16); + + encrypt = encrypting; + } + + public String getAlgorithmName() + { + return "DESede"; + } + + public int getBlockSize() + { + return 8; + } + + public void transformBlock(byte[] in, int inOff, byte[] out, int outOff) + { + if (key1 == null) + { + throw new IllegalStateException("DESede engine not initialised!"); + } + + if (encrypt) + { + desFunc(key1, in, inOff, out, outOff); + desFunc(key2, out, outOff, out, outOff); + desFunc(key3, out, outOff, out, outOff); + } + else + { + desFunc(key3, in, inOff, out, outOff); + desFunc(key2, out, outOff, out, outOff); + desFunc(key1, out, outOff, out, outOff); + } + } + + public void reset() + { + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java index 5a03608..38f8215 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java @@ -1,35 +1,35 @@ -package com.trilead.ssh2.crypto.cipher;
-
-/**
- * NullCipher.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NullCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class NullCipher implements BlockCipher
-{
- private int blockSize = 8;
-
- public NullCipher()
- {
- }
-
- public NullCipher(int blockSize)
- {
- this.blockSize = blockSize;
- }
-
- public void init(boolean forEncryption, byte[] key)
- {
- }
-
- public int getBlockSize()
- {
- return blockSize;
- }
-
- public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
- {
- System.arraycopy(src, srcoff, dst, dstoff, blockSize);
- }
-}
+package com.trilead.ssh2.crypto.cipher; + +/** + * NullCipher. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: NullCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class NullCipher implements BlockCipher +{ + private int blockSize = 8; + + public NullCipher() + { + } + + public NullCipher(int blockSize) + { + this.blockSize = blockSize; + } + + public void init(boolean forEncryption, byte[] key) + { + } + + public int getBlockSize() + { + return blockSize; + } + + public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff) + { + System.arraycopy(src, srcoff, dst, dstoff, blockSize); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java b/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java index d5bb112..3acde25 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java @@ -1,10 +1,10 @@ /** * */ -package com.trilead.ssh2.crypto.dh;
-
+package com.trilead.ssh2.crypto.dh; + import java.io.IOException; -import java.math.BigInteger;
+import java.math.BigInteger; import java.security.InvalidAlgorithmParameterException; import java.security.InvalidKeyException; import java.security.KeyFactory; @@ -18,15 +18,15 @@ import javax.crypto.interfaces.DHPrivateKey; import javax.crypto.interfaces.DHPublicKey; import javax.crypto.spec.DHParameterSpec; import javax.crypto.spec.DHPublicKeySpec; -
-/**
+ +/** * @author kenny * - */
+ */ public class DhExchange extends GenericDhExchange { -
- /* Given by the standard */
-
+ + /* Given by the standard */ + private static final BigInteger P1 = new BigInteger( "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" @@ -49,14 +49,14 @@ public class DhExchange extends GenericDhExchange { + "15728E5A8AACAA68FFFFFFFFFFFFFFFF", 16); private static final BigInteger G = BigInteger.valueOf(2); -
- /* Client public and private */
-
+ + /* Client public and private */ + private DHPrivateKey clientPrivate; private DHPublicKey clientPublic; -
- /* Server public */
-
+ + /* Server public */ + private DHPublicKey serverPublic; @Override @@ -81,24 +81,24 @@ public class DhExchange extends GenericDhExchange { } catch (InvalidAlgorithmParameterException e) { throw (IOException) new IOException("Invalid DH parameters").initCause(e); } - }
-
+ } + @Override public byte[] getE() { if (clientPublic == null) throw new IllegalStateException("DhExchange not initialized!"); -
+ return clientPublic.getY().toByteArray(); - }
-
+ } + @Override protected byte[] getServerE() { if (serverPublic == null) throw new IllegalStateException("DhExchange not initialized!"); -
+ return serverPublic.getY().toByteArray(); - }
-
+ } + @Override public void setF(byte[] f) throws IOException { if (clientPublic == null) @@ -120,13 +120,13 @@ public class DhExchange extends GenericDhExchange { throw (IOException) new IOException("Invalid DH key").initCause(e); } catch (InvalidKeySpecException e) { throw (IOException) new IOException("Invalid DH key").initCause(e); - }
-
+ } + sharedSecret = new BigInteger(ka.generateSecret()); } -
+ @Override public String getHashAlgo() { return "SHA1"; - }
-}
+ } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java b/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java index 8e798ee..2922284 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java @@ -1,113 +1,113 @@ -
-package com.trilead.ssh2.crypto.dh;
-
-import java.math.BigInteger;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.crypto.digest.HashForSSH2Types;
-
-
-/**
- * DhGroupExchange.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DhGroupExchange.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class DhGroupExchange
-{
- /* Given by the standard */
-
- private BigInteger p;
- private BigInteger g;
-
- /* Client public and private */
-
- private BigInteger e;
- private BigInteger x;
-
- /* Server public */
-
- private BigInteger f;
-
- /* Shared secret */
-
- private BigInteger k;
-
- public DhGroupExchange(BigInteger p, BigInteger g)
- {
- this.p = p;
- this.g = g;
- }
-
- public void init(SecureRandom rnd)
- {
- k = null;
-
- x = new BigInteger(p.bitLength() - 1, rnd);
- e = g.modPow(x, p);
- }
-
- /**
- * @return Returns the e.
- */
- public BigInteger getE()
- {
- if (e == null)
- throw new IllegalStateException("Not initialized!");
-
- return e;
- }
-
- /**
- * @return Returns the shared secret k.
- */
- public BigInteger getK()
- {
- if (k == null)
- throw new IllegalStateException("Shared secret not yet known, need f first!");
-
- return k;
- }
-
- /**
- * Sets f and calculates the shared secret.
- */
- public void setF(BigInteger f)
- {
- if (e == null)
- throw new IllegalStateException("Not initialized!");
-
- BigInteger zero = BigInteger.valueOf(0);
-
- if (zero.compareTo(f) >= 0 || p.compareTo(f) <= 0)
- throw new IllegalArgumentException("Invalid f specified!");
-
- this.f = f;
- this.k = f.modPow(x, p);
- }
-
- public byte[] calculateH(byte[] clientversion, byte[] serverversion, byte[] clientKexPayload,
- byte[] serverKexPayload, byte[] hostKey, DHGexParameters para)
- {
- HashForSSH2Types hash = new HashForSSH2Types("SHA1");
-
- hash.updateByteString(clientversion);
- hash.updateByteString(serverversion);
- hash.updateByteString(clientKexPayload);
- hash.updateByteString(serverKexPayload);
- hash.updateByteString(hostKey);
- if (para.getMin_group_len() > 0)
- hash.updateUINT32(para.getMin_group_len());
- hash.updateUINT32(para.getPref_group_len());
- if (para.getMax_group_len() > 0)
- hash.updateUINT32(para.getMax_group_len());
- hash.updateBigInt(p);
- hash.updateBigInt(g);
- hash.updateBigInt(e);
- hash.updateBigInt(f);
- hash.updateBigInt(k);
-
- return hash.getDigest();
- }
-}
+ +package com.trilead.ssh2.crypto.dh; + +import java.math.BigInteger; +import java.security.SecureRandom; + +import com.trilead.ssh2.DHGexParameters; +import com.trilead.ssh2.crypto.digest.HashForSSH2Types; + + +/** + * DhGroupExchange. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: DhGroupExchange.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class DhGroupExchange +{ + /* Given by the standard */ + + private BigInteger p; + private BigInteger g; + + /* Client public and private */ + + private BigInteger e; + private BigInteger x; + + /* Server public */ + + private BigInteger f; + + /* Shared secret */ + + private BigInteger k; + + public DhGroupExchange(BigInteger p, BigInteger g) + { + this.p = p; + this.g = g; + } + + public void init(SecureRandom rnd) + { + k = null; + + x = new BigInteger(p.bitLength() - 1, rnd); + e = g.modPow(x, p); + } + + /** + * @return Returns the e. + */ + public BigInteger getE() + { + if (e == null) + throw new IllegalStateException("Not initialized!"); + + return e; + } + + /** + * @return Returns the shared secret k. + */ + public BigInteger getK() + { + if (k == null) + throw new IllegalStateException("Shared secret not yet known, need f first!"); + + return k; + } + + /** + * Sets f and calculates the shared secret. + */ + public void setF(BigInteger f) + { + if (e == null) + throw new IllegalStateException("Not initialized!"); + + BigInteger zero = BigInteger.valueOf(0); + + if (zero.compareTo(f) >= 0 || p.compareTo(f) <= 0) + throw new IllegalArgumentException("Invalid f specified!"); + + this.f = f; + this.k = f.modPow(x, p); + } + + public byte[] calculateH(byte[] clientversion, byte[] serverversion, byte[] clientKexPayload, + byte[] serverKexPayload, byte[] hostKey, DHGexParameters para) + { + HashForSSH2Types hash = new HashForSSH2Types("SHA1"); + + hash.updateByteString(clientversion); + hash.updateByteString(serverversion); + hash.updateByteString(clientKexPayload); + hash.updateByteString(serverKexPayload); + hash.updateByteString(hostKey); + if (para.getMin_group_len() > 0) + hash.updateUINT32(para.getMin_group_len()); + hash.updateUINT32(para.getPref_group_len()); + if (para.getMax_group_len() > 0) + hash.updateUINT32(para.getMax_group_len()); + hash.updateBigInt(p); + hash.updateBigInt(g); + hash.updateBigInt(e); + hash.updateBigInt(f); + hash.updateBigInt(k); + + return hash.getDigest(); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java b/lib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java index 30ffe0d..9127d4e 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java @@ -1,100 +1,100 @@ -
-package com.trilead.ssh2.crypto.digest;
-
-import java.math.BigInteger;
-import java.security.DigestException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-/**
- * HashForSSH2Types.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HashForSSH2Types.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class HashForSSH2Types
-{
- MessageDigest md;
-
- public HashForSSH2Types(MessageDigest md)
- {
- this.md = md;
- }
-
- public HashForSSH2Types(String type)
- {
- try {
- if ("SHA1".equals(type) || "MD5".equals(type)) {
- md = MessageDigest.getInstance(type);
- } else {
- throw new IllegalArgumentException("Unknown algorithm " + type);
- }
- } catch (NoSuchAlgorithmException e) {
- throw new RuntimeException("Unsupported algorithm " + type);
- }
- }
-
- public void updateByte(byte b)
- {
- /* HACK - to test it with J2ME */
- byte[] tmp = new byte[1];
- tmp[0] = b;
- md.update(tmp);
- }
-
- public void updateBytes(byte[] b)
- {
- md.update(b);
- }
-
- public void updateUINT32(int v)
- {
- md.update((byte) (v >> 24));
- md.update((byte) (v >> 16));
- md.update((byte) (v >> 8));
- md.update((byte) (v));
- }
-
- public void updateByteString(byte[] b)
- {
- updateUINT32(b.length);
- updateBytes(b);
- }
-
- public void updateBigInt(BigInteger b)
- {
- updateByteString(b.toByteArray());
- }
-
- public void reset()
- {
- md.reset();
- }
-
- public int getDigestLength()
- {
- return md.getDigestLength();
- }
-
- public byte[] getDigest()
- {
- byte[] tmp = new byte[md.getDigestLength()];
- getDigest(tmp);
- return tmp;
- }
-
- public void getDigest(byte[] out)
- {
- getDigest(out, 0);
- }
-
- public void getDigest(byte[] out, int off)
- {
- try {
- md.digest(out, off, out.length - off);
- } catch (DigestException e) {
+ +package com.trilead.ssh2.crypto.digest; + +import java.math.BigInteger; +import java.security.DigestException; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; + +/** + * HashForSSH2Types. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: HashForSSH2Types.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class HashForSSH2Types +{ + MessageDigest md; + + public HashForSSH2Types(MessageDigest md) + { + this.md = md; + } + + public HashForSSH2Types(String type) + { + try { + if ("SHA1".equals(type) || "MD5".equals(type)) { + md = MessageDigest.getInstance(type); + } else { + throw new IllegalArgumentException("Unknown algorithm " + type); + } + } catch (NoSuchAlgorithmException e) { + throw new RuntimeException("Unsupported algorithm " + type); + } + } + + public void updateByte(byte b) + { + /* HACK - to test it with J2ME */ + byte[] tmp = new byte[1]; + tmp[0] = b; + md.update(tmp); + } + + public void updateBytes(byte[] b) + { + md.update(b); + } + + public void updateUINT32(int v) + { + md.update((byte) (v >> 24)); + md.update((byte) (v >> 16)); + md.update((byte) (v >> 8)); + md.update((byte) (v)); + } + + public void updateByteString(byte[] b) + { + updateUINT32(b.length); + updateBytes(b); + } + + public void updateBigInt(BigInteger b) + { + updateByteString(b.toByteArray()); + } + + public void reset() + { + md.reset(); + } + + public int getDigestLength() + { + return md.getDigestLength(); + } + + public byte[] getDigest() + { + byte[] tmp = new byte[md.getDigestLength()]; + getDigest(tmp); + return tmp; + } + + public void getDigest(byte[] out) + { + getDigest(out, 0); + } + + public void getDigest(byte[] out, int off) + { + try { + md.digest(out, off, out.length - off); + } catch (DigestException e) { // TODO is this right?! - throw new RuntimeException("Unable to digest", e);
- }
- }
-}
+ throw new RuntimeException("Unable to digest", e); + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java b/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java index 8138e63..20c52fa 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java @@ -1,118 +1,118 @@ -
-package com.trilead.ssh2.crypto.digest;
-
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
-
-import javax.crypto.Mac;
-import javax.crypto.ShortBufferException;
-import javax.crypto.spec.SecretKeySpec;
-
-/**
- * MAC.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: MAC.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public final class MAC
-{
- Mac mac;
- int outSize;
- int macSize;
- byte[] buffer;
-
- /* Higher Priority First */
- private static final String[] MAC_LIST = {
- "hmac-sha1-96", "hmac-sha1", "hmac-md5-96", "hmac-md5"
- };
-
- public final static String[] getMacList()
- {
- return MAC_LIST;
- }
-
- public final static void checkMacList(String[] macs)
- {
- for (int i = 0; i < macs.length; i++)
- getKeyLen(macs[i]);
- }
-
- public final static int getKeyLen(String type)
- {
- if (type.equals("hmac-sha1"))
- return 20;
- if (type.equals("hmac-sha1-96"))
- return 20;
- if (type.equals("hmac-md5"))
- return 16;
- if (type.equals("hmac-md5-96"))
- return 16;
- throw new IllegalArgumentException("Unkown algorithm " + type);
- }
-
- public MAC(String type, byte[] key)
- {
- try {
- if ("hmac-sha1".equals(type) || "hmac-sha1-96".equals(type))
- {
- mac = Mac.getInstance("HmacSHA1");
- }
- else if ("hmac-md5".equals(type) || "hmac-md5-96".equals(type))
- {
- mac = Mac.getInstance("HmacMD5");
- }
- else
- throw new IllegalArgumentException("Unkown algorithm " + type);
- } catch (NoSuchAlgorithmException e) {
- throw new IllegalArgumentException("Unknown algorithm " + type, e);
- }
-
- macSize = mac.getMacLength();
- if (type.endsWith("-96")) {
- outSize = 12;
- buffer = new byte[macSize];
- } else {
- outSize = macSize;
- buffer = null;
- }
-
- try {
- mac.init(new SecretKeySpec(key, type));
- } catch (InvalidKeyException e) {
- throw new IllegalArgumentException(e);
- }
- }
-
- public final void initMac(int seq)
- {
- mac.reset();
- mac.update((byte) (seq >> 24));
- mac.update((byte) (seq >> 16));
- mac.update((byte) (seq >> 8));
- mac.update((byte) (seq));
- }
-
- public final void update(byte[] packetdata, int off, int len)
- {
- mac.update(packetdata, off, len);
- }
-
- public final void getMac(byte[] out, int off)
- {
- try {
- if (buffer != null) {
- mac.doFinal(buffer, 0);
- System.arraycopy(buffer, 0, out, off, out.length - off);
- } else {
- mac.doFinal(out, off);
- }
- } catch (ShortBufferException e) {
- throw new IllegalStateException(e);
- }
- }
-
- public final int size()
- {
- return outSize;
- }
-}
+ +package com.trilead.ssh2.crypto.digest; + +import java.security.InvalidKeyException; +import java.security.NoSuchAlgorithmException; + +import javax.crypto.Mac; +import javax.crypto.ShortBufferException; +import javax.crypto.spec.SecretKeySpec; + +/** + * MAC. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: MAC.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public final class MAC +{ + Mac mac; + int outSize; + int macSize; + byte[] buffer; + + /* Higher Priority First */ + private static final String[] MAC_LIST = { + "hmac-sha1-96", "hmac-sha1", "hmac-md5-96", "hmac-md5" + }; + + public final static String[] getMacList() + { + return MAC_LIST; + } + + public final static void checkMacList(String[] macs) + { + for (int i = 0; i < macs.length; i++) + getKeyLen(macs[i]); + } + + public final static int getKeyLen(String type) + { + if (type.equals("hmac-sha1")) + return 20; + if (type.equals("hmac-sha1-96")) + return 20; + if (type.equals("hmac-md5")) + return 16; + if (type.equals("hmac-md5-96")) + return 16; + throw new IllegalArgumentException("Unkown algorithm " + type); + } + + public MAC(String type, byte[] key) + { + try { + if ("hmac-sha1".equals(type) || "hmac-sha1-96".equals(type)) + { + mac = Mac.getInstance("HmacSHA1"); + } + else if ("hmac-md5".equals(type) || "hmac-md5-96".equals(type)) + { + mac = Mac.getInstance("HmacMD5"); + } + else + throw new IllegalArgumentException("Unkown algorithm " + type); + } catch (NoSuchAlgorithmException e) { + throw new IllegalArgumentException("Unknown algorithm " + type, e); + } + + macSize = mac.getMacLength(); + if (type.endsWith("-96")) { + outSize = 12; + buffer = new byte[macSize]; + } else { + outSize = macSize; + buffer = null; + } + + try { + mac.init(new SecretKeySpec(key, type)); + } catch (InvalidKeyException e) { + throw new IllegalArgumentException(e); + } + } + + public final void initMac(int seq) + { + mac.reset(); + mac.update((byte) (seq >> 24)); + mac.update((byte) (seq >> 16)); + mac.update((byte) (seq >> 8)); + mac.update((byte) (seq)); + } + + public final void update(byte[] packetdata, int off, int len) + { + mac.update(packetdata, off, len); + } + + public final void getMac(byte[] out, int off) + { + try { + if (buffer != null) { + mac.doFinal(buffer, 0); + System.arraycopy(buffer, 0, out, off, out.length - off); + } else { + mac.doFinal(out, off); + } + } catch (ShortBufferException e) { + throw new IllegalStateException(e); + } + } + + public final int size() + { + return outSize; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/log/Logger.java b/lib/src/main/java/com/trilead/ssh2/log/Logger.java index fe388f7..20ab397 100644 --- a/lib/src/main/java/com/trilead/ssh2/log/Logger.java +++ b/lib/src/main/java/com/trilead/ssh2/log/Logger.java @@ -1,54 +1,54 @@ -
-package com.trilead.ssh2.log;
-
-import com.trilead.ssh2.DebugLogger;
-
-/**
- * Logger - a very simple logger, mainly used during development.
- * Is not based on log4j (to reduce external dependencies).
- * However, if needed, something like log4j could easily be
- * hooked in.
- * <p>
- * For speed reasons, the static variables are not protected
- * with semaphores. In other words, if you dynamicaly change the
- * logging settings, then some threads may still use the old setting.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Logger.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-
-public class Logger
-{
- public static boolean enabled = false;
- public static DebugLogger logger = null;
-
- private String className;
-
- public final static Logger getLogger(Class x)
- {
- return new Logger(x);
- }
-
- public Logger(Class x)
- {
- this.className = x.getName();
- }
-
- public final boolean isEnabled()
- {
- return enabled;
- }
-
- public final void log(int level, String message)
- {
- if (!enabled)
- return;
-
- DebugLogger target = logger;
-
- if (target == null)
- return;
-
- target.log(level, className, message);
- }
-}
+ +package com.trilead.ssh2.log; + +import com.trilead.ssh2.DebugLogger; + +/** + * Logger - a very simple logger, mainly used during development. + * Is not based on log4j (to reduce external dependencies). + * However, if needed, something like log4j could easily be + * hooked in. + * <p> + * For speed reasons, the static variables are not protected + * with semaphores. In other words, if you dynamicaly change the + * logging settings, then some threads may still use the old setting. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Logger.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $ + */ + +public class Logger +{ + public static boolean enabled = false; + public static DebugLogger logger = null; + + private String className; + + public final static Logger getLogger(Class x) + { + return new Logger(x); + } + + public Logger(Class x) + { + this.className = x.getName(); + } + + public final boolean isEnabled() + { + return enabled; + } + + public final void log(int level, String message) + { + if (!enabled) + return; + + DebugLogger target = logger; + + if (target == null) + return; + + target.log(level, className, message); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java index 111f6a2..bd2ea3f 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java @@ -1,66 +1,66 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelOpenConfirmation.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelOpenConfirmation.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelOpenConfirmation
-{
- byte[] payload;
-
- public int recipientChannelID;
- public int senderChannelID;
- public int initialWindowSize;
- public int maxPacketSize;
-
- public PacketChannelOpenConfirmation(int recipientChannelID, int senderChannelID, int initialWindowSize,
- int maxPacketSize)
- {
- this.recipientChannelID = recipientChannelID;
- this.senderChannelID = senderChannelID;
- this.initialWindowSize = initialWindowSize;
- this.maxPacketSize = maxPacketSize;
- }
-
- public PacketChannelOpenConfirmation(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION)
- throw new IOException(
- "This is not a SSH_MSG_CHANNEL_OPEN_CONFIRMATION! ("
- + packet_type + ")");
-
- recipientChannelID = tr.readUINT32();
- senderChannelID = tr.readUINT32();
- initialWindowSize = tr.readUINT32();
- maxPacketSize = tr.readUINT32();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_CONFIRMATION packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
- tw.writeUINT32(recipientChannelID);
- tw.writeUINT32(senderChannelID);
- tw.writeUINT32(initialWindowSize);
- tw.writeUINT32(maxPacketSize);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketChannelOpenConfirmation. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketChannelOpenConfirmation.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketChannelOpenConfirmation +{ + byte[] payload; + + public int recipientChannelID; + public int senderChannelID; + public int initialWindowSize; + public int maxPacketSize; + + public PacketChannelOpenConfirmation(int recipientChannelID, int senderChannelID, int initialWindowSize, + int maxPacketSize) + { + this.recipientChannelID = recipientChannelID; + this.senderChannelID = senderChannelID; + this.initialWindowSize = initialWindowSize; + this.maxPacketSize = maxPacketSize; + } + + public PacketChannelOpenConfirmation(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION) + throw new IOException( + "This is not a SSH_MSG_CHANNEL_OPEN_CONFIRMATION! (" + + packet_type + ")"); + + recipientChannelID = tr.readUINT32(); + senderChannelID = tr.readUINT32(); + initialWindowSize = tr.readUINT32(); + maxPacketSize = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_CONFIRMATION packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION); + tw.writeUINT32(recipientChannelID); + tw.writeUINT32(senderChannelID); + tw.writeUINT32(initialWindowSize); + tw.writeUINT32(maxPacketSize); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java index 5436ce3..1370355 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java @@ -1,66 +1,66 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelOpenFailure.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelOpenFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelOpenFailure
-{
- byte[] payload;
-
- public int recipientChannelID;
- public int reasonCode;
- public String description;
- public String languageTag;
-
- public PacketChannelOpenFailure(int recipientChannelID, int reasonCode, String description,
- String languageTag)
- {
- this.recipientChannelID = recipientChannelID;
- this.reasonCode = reasonCode;
- this.description = description;
- this.languageTag = languageTag;
- }
-
- public PacketChannelOpenFailure(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_FAILURE)
- throw new IOException(
- "This is not a SSH_MSG_CHANNEL_OPEN_FAILURE! ("
- + packet_type + ")");
-
- recipientChannelID = tr.readUINT32();
- reasonCode = tr.readUINT32();
- description = tr.readString();
- languageTag = tr.readString();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_FAILURE packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_FAILURE);
- tw.writeUINT32(recipientChannelID);
- tw.writeUINT32(reasonCode);
- tw.writeString(description);
- tw.writeString(languageTag);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketChannelOpenFailure. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketChannelOpenFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketChannelOpenFailure +{ + byte[] payload; + + public int recipientChannelID; + public int reasonCode; + public String description; + public String languageTag; + + public PacketChannelOpenFailure(int recipientChannelID, int reasonCode, String description, + String languageTag) + { + this.recipientChannelID = recipientChannelID; + this.reasonCode = reasonCode; + this.description = description; + this.languageTag = languageTag; + } + + public PacketChannelOpenFailure(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_FAILURE) + throw new IOException( + "This is not a SSH_MSG_CHANNEL_OPEN_FAILURE! (" + + packet_type + ")"); + + recipientChannelID = tr.readUINT32(); + reasonCode = tr.readUINT32(); + description = tr.readString(); + languageTag = tr.readString(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_FAILURE packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_FAILURE); + tw.writeUINT32(recipientChannelID); + tw.writeUINT32(reasonCode); + tw.writeString(description); + tw.writeString(languageTag); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java index 18002aa..c337930 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java @@ -1,35 +1,35 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketChannelTrileadPing.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelTrileadPing.java,v 1.1 2008/03/03 07:01:36
- * cplattne Exp $
- */
-public class PacketChannelTrileadPing
-{
- byte[] payload;
-
- public int recipientChannelID;
-
- public PacketChannelTrileadPing(int recipientChannelID)
- {
- this.recipientChannelID = recipientChannelID;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("trilead-ping");
- tw.writeBoolean(true);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketChannelTrileadPing. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketChannelTrileadPing.java,v 1.1 2008/03/03 07:01:36 + * cplattne Exp $ + */ +public class PacketChannelTrileadPing +{ + byte[] payload; + + public int recipientChannelID; + + public PacketChannelTrileadPing(int recipientChannelID) + { + this.recipientChannelID = recipientChannelID; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("trilead-ping"); + tw.writeBoolean(true); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java index bc0ac83..37ec081 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java @@ -1,57 +1,57 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelWindowAdjust.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelWindowAdjust.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelWindowAdjust
-{
- byte[] payload;
-
- public int recipientChannelID;
- public int windowChange;
-
- public PacketChannelWindowAdjust(int recipientChannelID, int windowChange)
- {
- this.recipientChannelID = recipientChannelID;
- this.windowChange = windowChange;
- }
-
- public PacketChannelWindowAdjust(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST)
- throw new IOException(
- "This is not a SSH_MSG_CHANNEL_WINDOW_ADJUST! ("
- + packet_type + ")");
-
- recipientChannelID = tr.readUINT32();
- windowChange = tr.readUINT32();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_CHANNEL_WINDOW_ADJUST packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST);
- tw.writeUINT32(recipientChannelID);
- tw.writeUINT32(windowChange);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketChannelWindowAdjust. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketChannelWindowAdjust.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketChannelWindowAdjust +{ + byte[] payload; + + public int recipientChannelID; + public int windowChange; + + public PacketChannelWindowAdjust(int recipientChannelID, int windowChange) + { + this.recipientChannelID = recipientChannelID; + this.windowChange = windowChange; + } + + public PacketChannelWindowAdjust(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST) + throw new IOException( + "This is not a SSH_MSG_CHANNEL_WINDOW_ADJUST! (" + + packet_type + ")"); + + recipientChannelID = tr.readUINT32(); + windowChange = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_CHANNEL_WINDOW_ADJUST packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST); + tw.writeUINT32(recipientChannelID); + tw.writeUINT32(windowChange); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java index 1811fb3..50d6ec2 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java @@ -1,57 +1,57 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketDisconnect.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketDisconnect.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PacketDisconnect
-{
- byte[] payload;
-
- int reason;
- String desc;
- String lang;
-
- public PacketDisconnect(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_DISCONNECT)
- throw new IOException("This is not a Disconnect Packet! (" + packet_type + ")");
-
- reason = tr.readUINT32();
- desc = tr.readString();
- lang = tr.readString();
- }
-
- public PacketDisconnect(int reason, String desc, String lang)
- {
- this.reason = reason;
- this.desc = desc;
- this.lang = lang;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_DISCONNECT);
- tw.writeUINT32(reason);
- tw.writeString(desc);
- tw.writeString(lang);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketDisconnect. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketDisconnect.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class PacketDisconnect +{ + byte[] payload; + + int reason; + String desc; + String lang; + + public PacketDisconnect(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_DISCONNECT) + throw new IOException("This is not a Disconnect Packet! (" + packet_type + ")"); + + reason = tr.readUINT32(); + desc = tr.readString(); + lang = tr.readString(); + } + + public PacketDisconnect(int reason, String desc, String lang) + { + this.reason = reason; + this.desc = desc; + this.lang = lang; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_DISCONNECT); + tw.writeUINT32(reason); + tw.writeString(desc); + tw.writeString(lang); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java index bc54b2e..20bd558 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java @@ -1,42 +1,42 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalCancelForwardRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalCancelForwardRequest.java,v 1.1 2007/10/15 12:49:55
- * cplattne Exp $
- */
-public class PacketGlobalCancelForwardRequest
-{
- byte[] payload;
-
- public boolean wantReply;
- public String bindAddress;
- public int bindPort;
-
- public PacketGlobalCancelForwardRequest(boolean wantReply, String bindAddress, int bindPort)
- {
- this.wantReply = wantReply;
- this.bindAddress = bindAddress;
- this.bindPort = bindPort;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-
- tw.writeString("cancel-tcpip-forward");
- tw.writeBoolean(wantReply);
- tw.writeString(bindAddress);
- tw.writeUINT32(bindPort);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketGlobalCancelForwardRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketGlobalCancelForwardRequest.java,v 1.1 2007/10/15 12:49:55 + * cplattne Exp $ + */ +public class PacketGlobalCancelForwardRequest +{ + byte[] payload; + + public boolean wantReply; + public String bindAddress; + public int bindPort; + + public PacketGlobalCancelForwardRequest(boolean wantReply, String bindAddress, int bindPort) + { + this.wantReply = wantReply; + this.bindAddress = bindAddress; + this.bindPort = bindPort; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST); + + tw.writeString("cancel-tcpip-forward"); + tw.writeBoolean(wantReply); + tw.writeString(bindAddress); + tw.writeUINT32(bindPort); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java index a97c4e3..55257e9 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java @@ -1,41 +1,41 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalForwardRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalForwardRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketGlobalForwardRequest
-{
- byte[] payload;
-
- public boolean wantReply;
- public String bindAddress;
- public int bindPort;
-
- public PacketGlobalForwardRequest(boolean wantReply, String bindAddress, int bindPort)
- {
- this.wantReply = wantReply;
- this.bindAddress = bindAddress;
- this.bindPort = bindPort;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-
- tw.writeString("tcpip-forward");
- tw.writeBoolean(wantReply);
- tw.writeString(bindAddress);
- tw.writeUINT32(bindPort);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketGlobalForwardRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketGlobalForwardRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketGlobalForwardRequest +{ + byte[] payload; + + public boolean wantReply; + public String bindAddress; + public int bindPort; + + public PacketGlobalForwardRequest(boolean wantReply, String bindAddress, int bindPort) + { + this.wantReply = wantReply; + this.bindAddress = bindAddress; + this.bindPort = bindPort; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST); + + tw.writeString("tcpip-forward"); + tw.writeBoolean(wantReply); + tw.writeString(bindAddress); + tw.writeUINT32(bindPort); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java index 5b9013d..3d8930e 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java @@ -1,32 +1,32 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalTrileadPing.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalTrileadPing.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $
- */
-public class PacketGlobalTrileadPing
-{
- byte[] payload;
-
- public PacketGlobalTrileadPing()
- {
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-
- tw.writeString("trilead-ping");
- tw.writeBoolean(true);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketGlobalTrileadPing. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketGlobalTrileadPing.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $ + */ +public class PacketGlobalTrileadPing +{ + byte[] payload; + + public PacketGlobalTrileadPing() + { + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST); + + tw.writeString("trilead-ping"); + tw.writeBoolean(true); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java index 591ed49..2b4d917 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java @@ -1,59 +1,59 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketIgnore.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketIgnore.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketIgnore
-{
- byte[] payload;
-
- byte[] data;
-
- public void setData(byte[] data)
- {
- this.data = data;
- payload = null;
- }
-
- public PacketIgnore()
- {
- }
-
- public PacketIgnore(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_IGNORE)
- throw new IOException("This is not a SSH_MSG_IGNORE packet! (" + packet_type + ")");
-
- /* Could parse String body */
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_IGNORE);
-
- if (data != null)
- tw.writeString(data, 0, data.length);
- else
- tw.writeString("");
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketIgnore. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketIgnore.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketIgnore +{ + byte[] payload; + + byte[] data; + + public void setData(byte[] data) + { + this.data = data; + payload = null; + } + + public PacketIgnore() + { + } + + public PacketIgnore(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_IGNORE) + throw new IOException("This is not a SSH_MSG_IGNORE packet! (" + packet_type + ")"); + + /* Could parse String body */ + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_IGNORE); + + if (data != null) + tw.writeString(data, 0, data.length); + else + tw.writeString(""); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java index 9201936..0092516 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java @@ -1,31 +1,31 @@ -package com.trilead.ssh2.packets;
-
-/**
- * PacketKexDHInit.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDHInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDHInit
-{
- byte[] payload;
-
+package com.trilead.ssh2.packets; + +/** + * PacketKexDHInit. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDHInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDHInit +{ + byte[] payload; + byte[] publicKey; -
+ public PacketKexDHInit(byte[] publicKey) - {
+ { this.publicKey = publicKey; - }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_KEXDH_INIT);
+ } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEXDH_INIT); tw.writeString(publicKey, 0, publicKey.length); - payload = tw.getBytes();
- }
- return payload;
- }
-}
+ payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java index 461f262..51f2bda 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java @@ -1,53 +1,53 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketKexDHReply.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDHReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDHReply
-{
- byte[] payload;
-
- byte[] hostKey;
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketKexDHReply. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDHReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDHReply +{ + byte[] payload; + + byte[] hostKey; byte[] publicKey; - byte[] signature;
-
- public PacketKexDHReply(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_KEXDH_REPLY)
- throw new IOException("This is not a SSH_MSG_KEXDH_REPLY! ("
- + packet_type + ")");
-
- hostKey = tr.readByteString();
+ byte[] signature; + + public PacketKexDHReply(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_KEXDH_REPLY) + throw new IOException("This is not a SSH_MSG_KEXDH_REPLY! (" + + packet_type + ")"); + + hostKey = tr.readByteString(); publicKey = tr.readByteString(); - signature = tr.readByteString();
-
- if (tr.remain() != 0) throw new IOException("PADDING IN SSH_MSG_KEXDH_REPLY!");
- }
-
+ signature = tr.readByteString(); + + if (tr.remain() != 0) throw new IOException("PADDING IN SSH_MSG_KEXDH_REPLY!"); + } + public byte[] getF() - {
+ { return publicKey; - }
-
- public byte[] getHostKey()
- {
- return hostKey;
- }
-
- public byte[] getSignature()
- {
- return signature;
- }
-}
+ } + + public byte[] getHostKey() + { + return hostKey; + } + + public byte[] getSignature() + { + return signature; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java index d531dad..db85b61 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java @@ -1,50 +1,50 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexGroup.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexGroup.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexGroup
-{
- byte[] payload;
-
- BigInteger p;
- BigInteger g;
-
- public PacketKexDhGexGroup(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_GROUP)
- throw new IllegalArgumentException(
- "This is not a SSH_MSG_KEX_DH_GEX_GROUP! (" + packet_type
- + ")");
-
- p = tr.readMPINT();
- g = tr.readMPINT();
-
- if (tr.remain() != 0)
- throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_GROUP!");
- }
-
- public BigInteger getG()
- {
- return g;
- }
-
- public BigInteger getP()
- {
- return p;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +import java.math.BigInteger; + +/** + * PacketKexDhGexGroup. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDhGexGroup.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDhGexGroup +{ + byte[] payload; + + BigInteger p; + BigInteger g; + + public PacketKexDhGexGroup(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_GROUP) + throw new IllegalArgumentException( + "This is not a SSH_MSG_KEX_DH_GEX_GROUP! (" + packet_type + + ")"); + + p = tr.readMPINT(); + g = tr.readMPINT(); + + if (tr.remain() != 0) + throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_GROUP!"); + } + + public BigInteger getG() + { + return g; + } + + public BigInteger getP() + { + return p; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java index f8f0916..8b34230 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java @@ -1,33 +1,33 @@ -package com.trilead.ssh2.packets;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexInit.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexInit
-{
- byte[] payload;
-
- BigInteger e;
-
- public PacketKexDhGexInit(BigInteger e)
- {
- this.e = e;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_INIT);
- tw.writeMPInt(e);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.math.BigInteger; + +/** + * PacketKexDhGexInit. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDhGexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDhGexInit +{ + byte[] payload; + + BigInteger e; + + public PacketKexDhGexInit(BigInteger e) + { + this.e = e; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_INIT); + tw.writeMPInt(e); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java index ae225fb..382b3b7 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java @@ -1,56 +1,56 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexReply.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexReply
-{
- byte[] payload;
-
- byte[] hostKey;
- BigInteger f;
- byte[] signature;
-
- public PacketKexDhGexReply(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_REPLY)
- throw new IOException("This is not a SSH_MSG_KEX_DH_GEX_REPLY! (" + packet_type + ")");
-
- hostKey = tr.readByteString();
- f = tr.readMPINT();
- signature = tr.readByteString();
-
- if (tr.remain() != 0)
- throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_REPLY!");
- }
-
- public BigInteger getF()
- {
- return f;
- }
-
- public byte[] getHostKey()
- {
- return hostKey;
- }
-
- public byte[] getSignature()
- {
- return signature;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +import java.math.BigInteger; + +/** + * PacketKexDhGexReply. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDhGexReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDhGexReply +{ + byte[] payload; + + byte[] hostKey; + BigInteger f; + byte[] signature; + + public PacketKexDhGexReply(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_REPLY) + throw new IOException("This is not a SSH_MSG_KEX_DH_GEX_REPLY! (" + packet_type + ")"); + + hostKey = tr.readByteString(); + f = tr.readMPINT(); + signature = tr.readByteString(); + + if (tr.remain() != 0) + throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_REPLY!"); + } + + public BigInteger getF() + { + return f; + } + + public byte[] getHostKey() + { + return hostKey; + } + + public byte[] getSignature() + { + return signature; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java index 75fc2af..50369df 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java @@ -1,39 +1,39 @@ -package com.trilead.ssh2.packets;
-
-import com.trilead.ssh2.DHGexParameters;
-
-/**
- * PacketKexDhGexRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexRequest
-{
- byte[] payload;
-
- int min;
- int n;
- int max;
-
- public PacketKexDhGexRequest(DHGexParameters para)
- {
- this.min = para.getMin_group_len();
- this.n = para.getPref_group_len();
- this.max = para.getMax_group_len();
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST);
- tw.writeUINT32(min);
- tw.writeUINT32(n);
- tw.writeUINT32(max);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import com.trilead.ssh2.DHGexParameters; + +/** + * PacketKexDhGexRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDhGexRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDhGexRequest +{ + byte[] payload; + + int min; + int n; + int max; + + public PacketKexDhGexRequest(DHGexParameters para) + { + this.min = para.getMin_group_len(); + this.n = para.getPref_group_len(); + this.max = para.getMax_group_len(); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST); + tw.writeUINT32(min); + tw.writeUINT32(n); + tw.writeUINT32(max); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java index d89ec02..327f379 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java @@ -1,34 +1,34 @@ -
-package com.trilead.ssh2.packets;
-
-import com.trilead.ssh2.DHGexParameters;
-
-/**
- * PacketKexDhGexRequestOld.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexRequestOld.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexRequestOld
-{
- byte[] payload;
-
- int n;
-
- public PacketKexDhGexRequestOld(DHGexParameters para)
- {
- this.n = para.getPref_group_len();
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST_OLD);
- tw.writeUINT32(n);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +import com.trilead.ssh2.DHGexParameters; + +/** + * PacketKexDhGexRequestOld. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexDhGexRequestOld.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexDhGexRequestOld +{ + byte[] payload; + + int n; + + public PacketKexDhGexRequestOld(DHGexParameters para) + { + this.n = para.getPref_group_len(); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST_OLD); + tw.writeUINT32(n); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java index 2a961c2..087d658 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java @@ -1,165 +1,165 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.transport.KexParameters;
-
-
-/**
- * PacketKexInit.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexInit
-{
- byte[] payload;
-
- KexParameters kp = new KexParameters();
-
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; +import java.security.SecureRandom; + +import com.trilead.ssh2.crypto.CryptoWishList; +import com.trilead.ssh2.transport.KexParameters; + + +/** + * PacketKexInit. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketKexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketKexInit +{ + byte[] payload; + + KexParameters kp = new KexParameters(); + public PacketKexInit(CryptoWishList cwl) - {
- kp.cookie = new byte[16];
+ { + kp.cookie = new byte[16]; new SecureRandom().nextBytes(kp.cookie); -
- kp.kex_algorithms = cwl.kexAlgorithms;
- kp.server_host_key_algorithms = cwl.serverHostKeyAlgorithms;
- kp.encryption_algorithms_client_to_server = cwl.c2s_enc_algos;
- kp.encryption_algorithms_server_to_client = cwl.s2c_enc_algos;
- kp.mac_algorithms_client_to_server = cwl.c2s_mac_algos;
- kp.mac_algorithms_server_to_client = cwl.s2c_mac_algos;
- kp.compression_algorithms_client_to_server = cwl.c2s_comp_algos;
- kp.compression_algorithms_server_to_client = cwl.s2c_comp_algos;
- kp.languages_client_to_server = new String[] {};
- kp.languages_server_to_client = new String[] {};
- kp.first_kex_packet_follows = false;
- kp.reserved_field1 = 0;
- }
-
- public PacketKexInit(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_KEXINIT)
- throw new IOException("This is not a KexInitPacket! (" + packet_type + ")");
-
- kp.cookie = tr.readBytes(16);
- kp.kex_algorithms = tr.readNameList();
- kp.server_host_key_algorithms = tr.readNameList();
- kp.encryption_algorithms_client_to_server = tr.readNameList();
- kp.encryption_algorithms_server_to_client = tr.readNameList();
- kp.mac_algorithms_client_to_server = tr.readNameList();
- kp.mac_algorithms_server_to_client = tr.readNameList();
- kp.compression_algorithms_client_to_server = tr.readNameList();
- kp.compression_algorithms_server_to_client = tr.readNameList();
- kp.languages_client_to_server = tr.readNameList();
- kp.languages_server_to_client = tr.readNameList();
- kp.first_kex_packet_follows = tr.readBoolean();
- kp.reserved_field1 = tr.readUINT32();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in KexInitPacket!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_KEXINIT);
- tw.writeBytes(kp.cookie, 0, 16);
- tw.writeNameList(kp.kex_algorithms);
- tw.writeNameList(kp.server_host_key_algorithms);
- tw.writeNameList(kp.encryption_algorithms_client_to_server);
- tw.writeNameList(kp.encryption_algorithms_server_to_client);
- tw.writeNameList(kp.mac_algorithms_client_to_server);
- tw.writeNameList(kp.mac_algorithms_server_to_client);
- tw.writeNameList(kp.compression_algorithms_client_to_server);
- tw.writeNameList(kp.compression_algorithms_server_to_client);
- tw.writeNameList(kp.languages_client_to_server);
- tw.writeNameList(kp.languages_server_to_client);
- tw.writeBoolean(kp.first_kex_packet_follows);
- tw.writeUINT32(kp.reserved_field1);
- payload = tw.getBytes();
- }
- return payload;
- }
-
- public KexParameters getKexParameters()
- {
- return kp;
- }
-
- public String[] getCompression_algorithms_client_to_server()
- {
- return kp.compression_algorithms_client_to_server;
- }
-
- public String[] getCompression_algorithms_server_to_client()
- {
- return kp.compression_algorithms_server_to_client;
- }
-
- public byte[] getCookie()
- {
- return kp.cookie;
- }
-
- public String[] getEncryption_algorithms_client_to_server()
- {
- return kp.encryption_algorithms_client_to_server;
- }
-
- public String[] getEncryption_algorithms_server_to_client()
- {
- return kp.encryption_algorithms_server_to_client;
- }
-
- public boolean isFirst_kex_packet_follows()
- {
- return kp.first_kex_packet_follows;
- }
-
- public String[] getKex_algorithms()
- {
- return kp.kex_algorithms;
- }
-
- public String[] getLanguages_client_to_server()
- {
- return kp.languages_client_to_server;
- }
-
- public String[] getLanguages_server_to_client()
- {
- return kp.languages_server_to_client;
- }
-
- public String[] getMac_algorithms_client_to_server()
- {
- return kp.mac_algorithms_client_to_server;
- }
-
- public String[] getMac_algorithms_server_to_client()
- {
- return kp.mac_algorithms_server_to_client;
- }
-
- public int getReserved_field1()
- {
- return kp.reserved_field1;
- }
-
- public String[] getServer_host_key_algorithms()
- {
- return kp.server_host_key_algorithms;
- }
-}
+ + kp.kex_algorithms = cwl.kexAlgorithms; + kp.server_host_key_algorithms = cwl.serverHostKeyAlgorithms; + kp.encryption_algorithms_client_to_server = cwl.c2s_enc_algos; + kp.encryption_algorithms_server_to_client = cwl.s2c_enc_algos; + kp.mac_algorithms_client_to_server = cwl.c2s_mac_algos; + kp.mac_algorithms_server_to_client = cwl.s2c_mac_algos; + kp.compression_algorithms_client_to_server = cwl.c2s_comp_algos; + kp.compression_algorithms_server_to_client = cwl.s2c_comp_algos; + kp.languages_client_to_server = new String[] {}; + kp.languages_server_to_client = new String[] {}; + kp.first_kex_packet_follows = false; + kp.reserved_field1 = 0; + } + + public PacketKexInit(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_KEXINIT) + throw new IOException("This is not a KexInitPacket! (" + packet_type + ")"); + + kp.cookie = tr.readBytes(16); + kp.kex_algorithms = tr.readNameList(); + kp.server_host_key_algorithms = tr.readNameList(); + kp.encryption_algorithms_client_to_server = tr.readNameList(); + kp.encryption_algorithms_server_to_client = tr.readNameList(); + kp.mac_algorithms_client_to_server = tr.readNameList(); + kp.mac_algorithms_server_to_client = tr.readNameList(); + kp.compression_algorithms_client_to_server = tr.readNameList(); + kp.compression_algorithms_server_to_client = tr.readNameList(); + kp.languages_client_to_server = tr.readNameList(); + kp.languages_server_to_client = tr.readNameList(); + kp.first_kex_packet_follows = tr.readBoolean(); + kp.reserved_field1 = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Padding in KexInitPacket!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_KEXINIT); + tw.writeBytes(kp.cookie, 0, 16); + tw.writeNameList(kp.kex_algorithms); + tw.writeNameList(kp.server_host_key_algorithms); + tw.writeNameList(kp.encryption_algorithms_client_to_server); + tw.writeNameList(kp.encryption_algorithms_server_to_client); + tw.writeNameList(kp.mac_algorithms_client_to_server); + tw.writeNameList(kp.mac_algorithms_server_to_client); + tw.writeNameList(kp.compression_algorithms_client_to_server); + tw.writeNameList(kp.compression_algorithms_server_to_client); + tw.writeNameList(kp.languages_client_to_server); + tw.writeNameList(kp.languages_server_to_client); + tw.writeBoolean(kp.first_kex_packet_follows); + tw.writeUINT32(kp.reserved_field1); + payload = tw.getBytes(); + } + return payload; + } + + public KexParameters getKexParameters() + { + return kp; + } + + public String[] getCompression_algorithms_client_to_server() + { + return kp.compression_algorithms_client_to_server; + } + + public String[] getCompression_algorithms_server_to_client() + { + return kp.compression_algorithms_server_to_client; + } + + public byte[] getCookie() + { + return kp.cookie; + } + + public String[] getEncryption_algorithms_client_to_server() + { + return kp.encryption_algorithms_client_to_server; + } + + public String[] getEncryption_algorithms_server_to_client() + { + return kp.encryption_algorithms_server_to_client; + } + + public boolean isFirst_kex_packet_follows() + { + return kp.first_kex_packet_follows; + } + + public String[] getKex_algorithms() + { + return kp.kex_algorithms; + } + + public String[] getLanguages_client_to_server() + { + return kp.languages_client_to_server; + } + + public String[] getLanguages_server_to_client() + { + return kp.languages_server_to_client; + } + + public String[] getMac_algorithms_client_to_server() + { + return kp.mac_algorithms_client_to_server; + } + + public String[] getMac_algorithms_server_to_client() + { + return kp.mac_algorithms_server_to_client; + } + + public int getReserved_field1() + { + return kp.reserved_field1; + } + + public String[] getServer_host_key_algorithms() + { + return kp.server_host_key_algorithms; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java index 34ed7e7..3ca6503 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java @@ -1,46 +1,46 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketNewKeys.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketNewKeys.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketNewKeys
-{
- byte[] payload;
-
- public PacketNewKeys()
- {
- }
-
- public PacketNewKeys(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_NEWKEYS)
- throw new IOException("This is not a SSH_MSG_NEWKEYS! ("
- + packet_type + ")");
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_NEWKEYS packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_NEWKEYS);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketNewKeys. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketNewKeys.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketNewKeys +{ + byte[] payload; + + public PacketNewKeys() + { + } + + public PacketNewKeys(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_NEWKEYS) + throw new IOException("This is not a SSH_MSG_NEWKEYS! (" + + packet_type + ")"); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_NEWKEYS packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_NEWKEYS); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java index 289e70e..da6cbef 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java @@ -1,56 +1,56 @@ -package com.trilead.ssh2.packets;
-
-
-/**
- * PacketOpenDirectTCPIPChannel.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketOpenDirectTCPIPChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketOpenDirectTCPIPChannel
-{
- byte[] payload;
-
- int channelID;
- int initialWindowSize;
- int maxPacketSize;
-
- String host_to_connect;
- int port_to_connect;
- String originator_IP_address;
- int originator_port;
-
- public PacketOpenDirectTCPIPChannel(int channelID, int initialWindowSize, int maxPacketSize,
- String host_to_connect, int port_to_connect, String originator_IP_address,
- int originator_port)
- {
- this.channelID = channelID;
- this.initialWindowSize = initialWindowSize;
- this.maxPacketSize = maxPacketSize;
- this.host_to_connect = host_to_connect;
- this.port_to_connect = port_to_connect;
- this.originator_IP_address = originator_IP_address;
- this.originator_port = originator_port;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
-
- tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN);
- tw.writeString("direct-tcpip");
- tw.writeUINT32(channelID);
- tw.writeUINT32(initialWindowSize);
- tw.writeUINT32(maxPacketSize);
- tw.writeString(host_to_connect);
- tw.writeUINT32(port_to_connect);
- tw.writeString(originator_IP_address);
- tw.writeUINT32(originator_port);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + + +/** + * PacketOpenDirectTCPIPChannel. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketOpenDirectTCPIPChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketOpenDirectTCPIPChannel +{ + byte[] payload; + + int channelID; + int initialWindowSize; + int maxPacketSize; + + String host_to_connect; + int port_to_connect; + String originator_IP_address; + int originator_port; + + public PacketOpenDirectTCPIPChannel(int channelID, int initialWindowSize, int maxPacketSize, + String host_to_connect, int port_to_connect, String originator_IP_address, + int originator_port) + { + this.channelID = channelID; + this.initialWindowSize = initialWindowSize; + this.maxPacketSize = maxPacketSize; + this.host_to_connect = host_to_connect; + this.port_to_connect = port_to_connect; + this.originator_IP_address = originator_IP_address; + this.originator_port = originator_port; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + + tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN); + tw.writeString("direct-tcpip"); + tw.writeUINT32(channelID); + tw.writeUINT32(initialWindowSize); + tw.writeUINT32(maxPacketSize); + tw.writeString(host_to_connect); + tw.writeUINT32(port_to_connect); + tw.writeString(originator_IP_address); + tw.writeUINT32(originator_port); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java index ea69ad1..a75ea63 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java @@ -1,62 +1,62 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketOpenSessionChannel.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketOpenSessionChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketOpenSessionChannel
-{
- byte[] payload;
-
- int channelID;
- int initialWindowSize;
- int maxPacketSize;
-
- public PacketOpenSessionChannel(int channelID, int initialWindowSize,
- int maxPacketSize)
- {
- this.channelID = channelID;
- this.initialWindowSize = initialWindowSize;
- this.maxPacketSize = maxPacketSize;
- }
-
- public PacketOpenSessionChannel(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN)
- throw new IOException("This is not a SSH_MSG_CHANNEL_OPEN! ("
- + packet_type + ")");
-
- channelID = tr.readUINT32();
- initialWindowSize = tr.readUINT32();
- maxPacketSize = tr.readUINT32();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN);
- tw.writeString("session");
- tw.writeUINT32(channelID);
- tw.writeUINT32(initialWindowSize);
- tw.writeUINT32(maxPacketSize);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketOpenSessionChannel. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketOpenSessionChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketOpenSessionChannel +{ + byte[] payload; + + int channelID; + int initialWindowSize; + int maxPacketSize; + + public PacketOpenSessionChannel(int channelID, int initialWindowSize, + int maxPacketSize) + { + this.channelID = channelID; + this.initialWindowSize = initialWindowSize; + this.maxPacketSize = maxPacketSize; + } + + public PacketOpenSessionChannel(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN) + throw new IOException("This is not a SSH_MSG_CHANNEL_OPEN! (" + + packet_type + ")"); + + channelID = tr.readUINT32(); + initialWindowSize = tr.readUINT32(); + maxPacketSize = tr.readUINT32(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN); + tw.writeString("session"); + tw.writeUINT32(channelID); + tw.writeUINT32(initialWindowSize); + tw.writeUINT32(maxPacketSize); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java index 5081651..d5c9a90 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java @@ -1,61 +1,61 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketServiceAccept.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketServiceAccept.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PacketServiceAccept
-{
- byte[] payload;
-
- String serviceName;
-
- public PacketServiceAccept(String serviceName)
- {
- this.serviceName = serviceName;
- }
-
- public PacketServiceAccept(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_SERVICE_ACCEPT)
- throw new IOException("This is not a SSH_MSG_SERVICE_ACCEPT! (" + packet_type + ")");
-
- /* Be clever in case the server is not. Some servers seem to violate RFC4253 */
-
- if (tr.remain() > 0)
- {
- serviceName = tr.readString();
- }
- else
- {
- serviceName = "";
- }
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_SERVICE_ACCEPT packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_SERVICE_ACCEPT);
- tw.writeString(serviceName);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketServiceAccept. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketServiceAccept.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class PacketServiceAccept +{ + byte[] payload; + + String serviceName; + + public PacketServiceAccept(String serviceName) + { + this.serviceName = serviceName; + } + + public PacketServiceAccept(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_SERVICE_ACCEPT) + throw new IOException("This is not a SSH_MSG_SERVICE_ACCEPT! (" + packet_type + ")"); + + /* Be clever in case the server is not. Some servers seem to violate RFC4253 */ + + if (tr.remain() > 0) + { + serviceName = tr.readString(); + } + else + { + serviceName = ""; + } + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_SERVICE_ACCEPT packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_SERVICE_ACCEPT); + tw.writeString(serviceName); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java index df5b8b4..c2d2065 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java @@ -1,52 +1,52 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketServiceRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketServiceRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketServiceRequest
-{
- byte[] payload;
-
- String serviceName;
-
- public PacketServiceRequest(String serviceName)
- {
- this.serviceName = serviceName;
- }
-
- public PacketServiceRequest(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_SERVICE_REQUEST)
- throw new IOException("This is not a SSH_MSG_SERVICE_REQUEST! ("
- + packet_type + ")");
-
- serviceName = tr.readString();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_SERVICE_REQUEST packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_SERVICE_REQUEST);
- tw.writeString(serviceName);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketServiceRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketServiceRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketServiceRequest +{ + byte[] payload; + + String serviceName; + + public PacketServiceRequest(String serviceName) + { + this.serviceName = serviceName; + } + + public PacketServiceRequest(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_SERVICE_REQUEST) + throw new IOException("This is not a SSH_MSG_SERVICE_REQUEST! (" + + packet_type + ")"); + + serviceName = tr.readString(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_SERVICE_REQUEST packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_SERVICE_REQUEST); + tw.writeString(serviceName); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java index 5f459cf..84efa5d 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java @@ -1,39 +1,39 @@ -package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionExecCommand.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionExecCommand.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionExecCommand
-{
- byte[] payload;
-
- public int recipientChannelID;
- public boolean wantReply;
- public String command;
-
- public PacketSessionExecCommand(int recipientChannelID, boolean wantReply, String command)
- {
- this.recipientChannelID = recipientChannelID;
- this.wantReply = wantReply;
- this.command = command;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("exec");
- tw.writeBoolean(wantReply);
- tw.writeString(command);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + + +/** + * PacketSessionExecCommand. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketSessionExecCommand.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketSessionExecCommand +{ + byte[] payload; + + public int recipientChannelID; + public boolean wantReply; + public String command; + + public PacketSessionExecCommand(int recipientChannelID, boolean wantReply, String command) + { + this.recipientChannelID = recipientChannelID; + this.wantReply = wantReply; + this.command = command; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("exec"); + tw.writeBoolean(wantReply); + tw.writeString(command); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java index 93dd5ed..d9c3d59 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java @@ -1,57 +1,57 @@ -package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionPtyRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionPtyRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionPtyRequest
-{
- byte[] payload;
-
- public int recipientChannelID;
- public boolean wantReply;
- public String term;
- public int character_width;
- public int character_height;
- public int pixel_width;
- public int pixel_height;
- public byte[] terminal_modes;
-
- public PacketSessionPtyRequest(int recipientChannelID, boolean wantReply, String term,
- int character_width, int character_height, int pixel_width, int pixel_height,
- byte[] terminal_modes)
- {
- this.recipientChannelID = recipientChannelID;
- this.wantReply = wantReply;
- this.term = term;
- this.character_width = character_width;
- this.character_height = character_height;
- this.pixel_width = pixel_width;
- this.pixel_height = pixel_height;
- this.terminal_modes = terminal_modes;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("pty-req");
- tw.writeBoolean(wantReply);
- tw.writeString(term);
- tw.writeUINT32(character_width);
- tw.writeUINT32(character_height);
- tw.writeUINT32(pixel_width);
- tw.writeUINT32(pixel_height);
- tw.writeString(terminal_modes, 0, terminal_modes.length);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + + +/** + * PacketSessionPtyRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketSessionPtyRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketSessionPtyRequest +{ + byte[] payload; + + public int recipientChannelID; + public boolean wantReply; + public String term; + public int character_width; + public int character_height; + public int pixel_width; + public int pixel_height; + public byte[] terminal_modes; + + public PacketSessionPtyRequest(int recipientChannelID, boolean wantReply, String term, + int character_width, int character_height, int pixel_width, int pixel_height, + byte[] terminal_modes) + { + this.recipientChannelID = recipientChannelID; + this.wantReply = wantReply; + this.term = term; + this.character_width = character_width; + this.character_height = character_height; + this.pixel_width = pixel_width; + this.pixel_height = pixel_height; + this.terminal_modes = terminal_modes; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("pty-req"); + tw.writeBoolean(wantReply); + tw.writeString(term); + tw.writeUINT32(character_width); + tw.writeUINT32(character_height); + tw.writeUINT32(pixel_width); + tw.writeUINT32(pixel_height); + tw.writeString(terminal_modes, 0, terminal_modes.length); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java index edfc85b..e5add01 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java @@ -1,36 +1,36 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketSessionStartShell.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionStartShell.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionStartShell
-{
- byte[] payload;
-
- public int recipientChannelID;
- public boolean wantReply;
-
- public PacketSessionStartShell(int recipientChannelID, boolean wantReply)
- {
- this.recipientChannelID = recipientChannelID;
- this.wantReply = wantReply;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("shell");
- tw.writeBoolean(wantReply);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketSessionStartShell. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketSessionStartShell.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketSessionStartShell +{ + byte[] payload; + + public int recipientChannelID; + public boolean wantReply; + + public PacketSessionStartShell(int recipientChannelID, boolean wantReply) + { + this.recipientChannelID = recipientChannelID; + this.wantReply = wantReply; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("shell"); + tw.writeBoolean(wantReply); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java index 3aa77ba..cdc3a8c 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java @@ -1,40 +1,40 @@ -package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionSubsystemRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionSubsystemRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionSubsystemRequest
-{
- byte[] payload;
-
- public int recipientChannelID;
- public boolean wantReply;
- public String subsystem;
-
- public PacketSessionSubsystemRequest(int recipientChannelID, boolean wantReply, String subsystem)
- {
- this.recipientChannelID = recipientChannelID;
- this.wantReply = wantReply;
- this.subsystem = subsystem;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("subsystem");
- tw.writeBoolean(wantReply);
- tw.writeString(subsystem);
- payload = tw.getBytes();
- tw.getBytes(payload);
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + + +/** + * PacketSessionSubsystemRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketSessionSubsystemRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketSessionSubsystemRequest +{ + byte[] payload; + + public int recipientChannelID; + public boolean wantReply; + public String subsystem; + + public PacketSessionSubsystemRequest(int recipientChannelID, boolean wantReply, String subsystem) + { + this.recipientChannelID = recipientChannelID; + this.wantReply = wantReply; + this.subsystem = subsystem; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("subsystem"); + tw.writeBoolean(wantReply); + tw.writeString(subsystem); + payload = tw.getBytes(); + tw.getBytes(payload); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java index 5cc1d14..26479c7 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java @@ -1,53 +1,53 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketSessionX11Request.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionX11Request.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionX11Request
-{
- byte[] payload;
-
- public int recipientChannelID;
- public boolean wantReply;
-
- public boolean singleConnection;
- String x11AuthenticationProtocol;
- String x11AuthenticationCookie;
- int x11ScreenNumber;
-
- public PacketSessionX11Request(int recipientChannelID, boolean wantReply, boolean singleConnection,
- String x11AuthenticationProtocol, String x11AuthenticationCookie, int x11ScreenNumber)
- {
- this.recipientChannelID = recipientChannelID;
- this.wantReply = wantReply;
-
- this.singleConnection = singleConnection;
- this.x11AuthenticationProtocol = x11AuthenticationProtocol;
- this.x11AuthenticationCookie = x11AuthenticationCookie;
- this.x11ScreenNumber = x11ScreenNumber;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
- tw.writeUINT32(recipientChannelID);
- tw.writeString("x11-req");
- tw.writeBoolean(wantReply);
-
- tw.writeBoolean(singleConnection);
- tw.writeString(x11AuthenticationProtocol);
- tw.writeString(x11AuthenticationCookie);
- tw.writeUINT32(x11ScreenNumber);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketSessionX11Request. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketSessionX11Request.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketSessionX11Request +{ + byte[] payload; + + public int recipientChannelID; + public boolean wantReply; + + public boolean singleConnection; + String x11AuthenticationProtocol; + String x11AuthenticationCookie; + int x11ScreenNumber; + + public PacketSessionX11Request(int recipientChannelID, boolean wantReply, boolean singleConnection, + String x11AuthenticationProtocol, String x11AuthenticationCookie, int x11ScreenNumber) + { + this.recipientChannelID = recipientChannelID; + this.wantReply = wantReply; + + this.singleConnection = singleConnection; + this.x11AuthenticationProtocol = x11AuthenticationProtocol; + this.x11AuthenticationCookie = x11AuthenticationCookie; + this.x11ScreenNumber = x11ScreenNumber; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST); + tw.writeUINT32(recipientChannelID); + tw.writeString("x11-req"); + tw.writeBoolean(wantReply); + + tw.writeBoolean(singleConnection); + tw.writeString(x11AuthenticationProtocol); + tw.writeString(x11AuthenticationCookie); + tw.writeUINT32(x11ScreenNumber); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java index 2eafc5e..8ad8c3b 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java @@ -1,60 +1,60 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthBanner.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthBanner.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthBanner
-{
- byte[] payload;
-
- String message;
- String language;
-
- public PacketUserauthBanner(String message, String language)
- {
- this.message = message;
- this.language = language;
- }
-
- public String getBanner()
- {
- return message;
- }
-
- public PacketUserauthBanner(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_BANNER)
- throw new IOException("This is not a SSH_MSG_USERAUTH_BANNER! (" + packet_type + ")");
-
- message = tr.readString("UTF-8");
- language = tr.readString();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_BANNER);
- tw.writeString(message);
- tw.writeString(language);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthBanner. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthBanner.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthBanner +{ + byte[] payload; + + String message; + String language; + + public PacketUserauthBanner(String message, String language) + { + this.message = message; + this.language = language; + } + + public String getBanner() + { + return message; + } + + public PacketUserauthBanner(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_BANNER) + throw new IOException("This is not a SSH_MSG_USERAUTH_BANNER! (" + packet_type + ")"); + + message = tr.readString("UTF-8"); + language = tr.readString(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_BANNER); + tw.writeString(message); + tw.writeString(language); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java index 77e9cf9..fd4a726 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java @@ -1,53 +1,53 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthBanner.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthFailure
-{
- byte[] payload;
-
- String[] authThatCanContinue;
- boolean partialSuccess;
-
- public PacketUserauthFailure(String[] authThatCanContinue, boolean partialSuccess)
- {
- this.authThatCanContinue = authThatCanContinue;
- this.partialSuccess = partialSuccess;
- }
-
- public PacketUserauthFailure(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_FAILURE)
- throw new IOException("This is not a SSH_MSG_USERAUTH_FAILURE! (" + packet_type + ")");
-
- authThatCanContinue = tr.readNameList();
- partialSuccess = tr.readBoolean();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_USERAUTH_FAILURE packet!");
- }
-
- public String[] getAuthThatCanContinue()
- {
- return authThatCanContinue;
- }
-
- public boolean isPartialSuccess()
- {
- return partialSuccess;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthBanner. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthFailure +{ + byte[] payload; + + String[] authThatCanContinue; + boolean partialSuccess; + + public PacketUserauthFailure(String[] authThatCanContinue, boolean partialSuccess) + { + this.authThatCanContinue = authThatCanContinue; + this.partialSuccess = partialSuccess; + } + + public PacketUserauthFailure(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_FAILURE) + throw new IOException("This is not a SSH_MSG_USERAUTH_FAILURE! (" + packet_type + ")"); + + authThatCanContinue = tr.readNameList(); + partialSuccess = tr.readBoolean(); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_USERAUTH_FAILURE packet!"); + } + + public String[] getAuthThatCanContinue() + { + return authThatCanContinue; + } + + public boolean isPartialSuccess() + { + return partialSuccess; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java index 75a0730..e1606d1 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java @@ -1,84 +1,84 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthInfoRequest.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthInfoRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthInfoRequest
-{
- byte[] payload;
-
- String name;
- String instruction;
- String languageTag;
- int numPrompts;
-
- String prompt[];
- boolean echo[];
-
- public PacketUserauthInfoRequest(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_INFO_REQUEST)
- throw new IOException("This is not a SSH_MSG_USERAUTH_INFO_REQUEST! (" + packet_type + ")");
-
- name = tr.readString();
- instruction = tr.readString();
- languageTag = tr.readString();
-
- numPrompts = tr.readUINT32();
-
- prompt = new String[numPrompts];
- echo = new boolean[numPrompts];
-
- for (int i = 0; i < numPrompts; i++)
- {
- prompt[i] = tr.readString();
- echo[i] = tr.readBoolean();
- }
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_USERAUTH_INFO_REQUEST packet!");
- }
-
- public boolean[] getEcho()
- {
- return echo;
- }
-
- public String getInstruction()
- {
- return instruction;
- }
-
- public String getLanguageTag()
- {
- return languageTag;
- }
-
- public String getName()
- {
- return name;
- }
-
- public int getNumPrompts()
- {
- return numPrompts;
- }
-
- public String[] getPrompt()
- {
- return prompt;
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthInfoRequest. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthInfoRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthInfoRequest +{ + byte[] payload; + + String name; + String instruction; + String languageTag; + int numPrompts; + + String prompt[]; + boolean echo[]; + + public PacketUserauthInfoRequest(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_INFO_REQUEST) + throw new IOException("This is not a SSH_MSG_USERAUTH_INFO_REQUEST! (" + packet_type + ")"); + + name = tr.readString(); + instruction = tr.readString(); + languageTag = tr.readString(); + + numPrompts = tr.readUINT32(); + + prompt = new String[numPrompts]; + echo = new boolean[numPrompts]; + + for (int i = 0; i < numPrompts; i++) + { + prompt[i] = tr.readString(); + echo[i] = tr.readBoolean(); + } + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_USERAUTH_INFO_REQUEST packet!"); + } + + public boolean[] getEcho() + { + return echo; + } + + public String getInstruction() + { + return instruction; + } + + public String getLanguageTag() + { + return languageTag; + } + + public String getName() + { + return name; + } + + public int getNumPrompts() + { + return numPrompts; + } + + public String[] getPrompt() + { + return prompt; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java index b06f0b5..e8795d4 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java @@ -1,35 +1,35 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketUserauthInfoResponse.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthInfoResponse.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthInfoResponse
-{
- byte[] payload;
-
- String[] responses;
-
- public PacketUserauthInfoResponse(String[] responses)
- {
- this.responses = responses;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_INFO_RESPONSE);
- tw.writeUINT32(responses.length);
- for (int i = 0; i < responses.length; i++)
- tw.writeString(responses[i]);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketUserauthInfoResponse. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthInfoResponse.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthInfoResponse +{ + byte[] payload; + + String[] responses; + + public PacketUserauthInfoResponse(String[] responses) + { + this.responses = responses; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_INFO_RESPONSE); + tw.writeUINT32(responses.length); + for (int i = 0; i < responses.length; i++) + tw.writeString(responses[i]); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java index e0efd29..83e9f49 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java @@ -1,42 +1,42 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * PacketUserauthRequestInteractive.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestInteractive.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestInteractive
-{
- byte[] payload;
-
- String userName;
- String serviceName;
- String[] submethods;
-
- public PacketUserauthRequestInteractive(String serviceName, String user, String[] submethods)
- {
- this.serviceName = serviceName;
- this.userName = user;
- this.submethods = submethods;
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(userName);
- tw.writeString(serviceName);
- tw.writeString("keyboard-interactive");
- tw.writeString(""); // draft-ietf-secsh-newmodes-04.txt says that
- // the language tag should be empty.
- tw.writeNameList(submethods);
-
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+ +package com.trilead.ssh2.packets; + +/** + * PacketUserauthRequestInteractive. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthRequestInteractive.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthRequestInteractive +{ + byte[] payload; + + String userName; + String serviceName; + String[] submethods; + + public PacketUserauthRequestInteractive(String serviceName, String user, String[] submethods) + { + this.serviceName = serviceName; + this.userName = user; + this.submethods = submethods; + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(userName); + tw.writeString(serviceName); + tw.writeString("keyboard-interactive"); + tw.writeString(""); // draft-ietf-secsh-newmodes-04.txt says that + // the language tag should be empty. + tw.writeNameList(submethods); + + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java index 93f89d9..d786003 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java @@ -1,61 +1,61 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPassword.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestNone.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestNone
-{
- byte[] payload;
-
- String userName;
- String serviceName;
-
- public PacketUserauthRequestNone(String serviceName, String user)
- {
- this.serviceName = serviceName;
- this.userName = user;
- }
-
- public PacketUserauthRequestNone(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
- throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")");
-
- userName = tr.readString();
- serviceName = tr.readString();
-
- String method = tr.readString();
-
- if (method.equals("none") == false)
- throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type none!");
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(userName);
- tw.writeString(serviceName);
- tw.writeString("none");
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthRequestPassword. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthRequestNone.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthRequestNone +{ + byte[] payload; + + String userName; + String serviceName; + + public PacketUserauthRequestNone(String serviceName, String user) + { + this.serviceName = serviceName; + this.userName = user; + } + + public PacketUserauthRequestNone(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST) + throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")"); + + userName = tr.readString(); + serviceName = tr.readString(); + + String method = tr.readString(); + + if (method.equals("none") == false) + throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type none!"); + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(userName); + tw.writeString(serviceName); + tw.writeString("none"); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java index df7b36b..83047dd 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java @@ -1,67 +1,67 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPassword.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestPassword.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestPassword
-{
- byte[] payload;
-
- String userName;
- String serviceName;
- String password;
-
- public PacketUserauthRequestPassword(String serviceName, String user, String pass)
- {
- this.serviceName = serviceName;
- this.userName = user;
- this.password = pass;
- }
-
- public PacketUserauthRequestPassword(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
- throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")");
-
- userName = tr.readString();
- serviceName = tr.readString();
-
- String method = tr.readString();
-
- if (method.equals("password") == false)
- throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type password!");
-
- /* ... */
-
- if (tr.remain() != 0)
- throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(userName);
- tw.writeString(serviceName);
- tw.writeString("password");
- tw.writeBoolean(false);
- tw.writeString(password);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthRequestPassword. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthRequestPassword.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthRequestPassword +{ + byte[] payload; + + String userName; + String serviceName; + String password; + + public PacketUserauthRequestPassword(String serviceName, String user, String pass) + { + this.serviceName = serviceName; + this.userName = user; + this.password = pass; + } + + public PacketUserauthRequestPassword(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST) + throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")"); + + userName = tr.readString(); + serviceName = tr.readString(); + + String method = tr.readString(); + + if (method.equals("password") == false) + throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type password!"); + + /* ... */ + + if (tr.remain() != 0) + throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(userName); + tw.writeString(serviceName); + tw.writeString("password"); + tw.writeBoolean(false); + tw.writeString(password); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java index 1e38673..6462864 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java @@ -1,65 +1,65 @@ -package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPublicKey.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestPublicKey.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestPublicKey
-{
- byte[] payload;
-
- String userName;
- String serviceName;
- String password;
- String pkAlgoName;
- byte[] pk;
- byte[] sig;
-
- public PacketUserauthRequestPublicKey(String serviceName, String user,
- String pkAlgorithmName, byte[] pk, byte[] sig)
- {
- this.serviceName = serviceName;
- this.userName = user;
- this.pkAlgoName = pkAlgorithmName;
- this.pk = pk;
- this.sig = sig;
- }
-
- public PacketUserauthRequestPublicKey(byte payload[], int off, int len) throws IOException
- {
- this.payload = new byte[len];
- System.arraycopy(payload, off, this.payload, 0, len);
-
- TypesReader tr = new TypesReader(payload, off, len);
-
- int packet_type = tr.readByte();
-
- if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
- throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! ("
- + packet_type + ")");
-
- throw new IOException("Not implemented!");
- }
-
- public byte[] getPayload()
- {
- if (payload == null)
- {
- TypesWriter tw = new TypesWriter();
- tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
- tw.writeString(userName);
- tw.writeString(serviceName);
- tw.writeString("publickey");
- tw.writeBoolean(true);
- tw.writeString(pkAlgoName);
- tw.writeString(pk, 0, pk.length);
- tw.writeString(sig, 0, sig.length);
- payload = tw.getBytes();
- }
- return payload;
- }
-}
+package com.trilead.ssh2.packets; + +import java.io.IOException; + +/** + * PacketUserauthRequestPublicKey. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: PacketUserauthRequestPublicKey.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class PacketUserauthRequestPublicKey +{ + byte[] payload; + + String userName; + String serviceName; + String password; + String pkAlgoName; + byte[] pk; + byte[] sig; + + public PacketUserauthRequestPublicKey(String serviceName, String user, + String pkAlgorithmName, byte[] pk, byte[] sig) + { + this.serviceName = serviceName; + this.userName = user; + this.pkAlgoName = pkAlgorithmName; + this.pk = pk; + this.sig = sig; + } + + public PacketUserauthRequestPublicKey(byte payload[], int off, int len) throws IOException + { + this.payload = new byte[len]; + System.arraycopy(payload, off, this.payload, 0, len); + + TypesReader tr = new TypesReader(payload, off, len); + + int packet_type = tr.readByte(); + + if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST) + throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + + packet_type + ")"); + + throw new IOException("Not implemented!"); + } + + public byte[] getPayload() + { + if (payload == null) + { + TypesWriter tw = new TypesWriter(); + tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST); + tw.writeString(userName); + tw.writeString(serviceName); + tw.writeString("publickey"); + tw.writeBoolean(true); + tw.writeString(pkAlgoName); + tw.writeString(pk, 0, pk.length); + tw.writeString(sig, 0, sig.length); + payload = tw.getBytes(); + } + return payload; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/Packets.java b/lib/src/main/java/com/trilead/ssh2/packets/Packets.java index bc9a6c0..6989286 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/Packets.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/Packets.java @@ -1,149 +1,149 @@ -
-package com.trilead.ssh2.packets;
-
-/**
- * Packets.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Packets.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class Packets
-{
- public static final int SSH_MSG_DISCONNECT = 1;
- public static final int SSH_MSG_IGNORE = 2;
- public static final int SSH_MSG_UNIMPLEMENTED = 3;
- public static final int SSH_MSG_DEBUG = 4;
- public static final int SSH_MSG_SERVICE_REQUEST = 5;
- public static final int SSH_MSG_SERVICE_ACCEPT = 6;
-
- public static final int SSH_MSG_KEXINIT = 20;
- public static final int SSH_MSG_NEWKEYS = 21;
-
- public static final int SSH_MSG_KEXDH_INIT = 30;
- public static final int SSH_MSG_KEXDH_REPLY = 31;
-
- public static final int SSH_MSG_KEX_DH_GEX_REQUEST_OLD = 30;
- public static final int SSH_MSG_KEX_DH_GEX_REQUEST = 34;
- public static final int SSH_MSG_KEX_DH_GEX_GROUP = 31;
- public static final int SSH_MSG_KEX_DH_GEX_INIT = 32;
- public static final int SSH_MSG_KEX_DH_GEX_REPLY = 33;
-
- public static final int SSH_MSG_USERAUTH_REQUEST = 50;
- public static final int SSH_MSG_USERAUTH_FAILURE = 51;
- public static final int SSH_MSG_USERAUTH_SUCCESS = 52;
- public static final int SSH_MSG_USERAUTH_BANNER = 53;
- public static final int SSH_MSG_USERAUTH_INFO_REQUEST = 60;
- public static final int SSH_MSG_USERAUTH_INFO_RESPONSE = 61;
-
- public static final int SSH_MSG_GLOBAL_REQUEST = 80;
- public static final int SSH_MSG_REQUEST_SUCCESS = 81;
- public static final int SSH_MSG_REQUEST_FAILURE = 82;
-
- public static final int SSH_MSG_CHANNEL_OPEN = 90;
- public static final int SSH_MSG_CHANNEL_OPEN_CONFIRMATION = 91;
- public static final int SSH_MSG_CHANNEL_OPEN_FAILURE = 92;
- public static final int SSH_MSG_CHANNEL_WINDOW_ADJUST = 93;
- public static final int SSH_MSG_CHANNEL_DATA = 94;
- public static final int SSH_MSG_CHANNEL_EXTENDED_DATA = 95;
- public static final int SSH_MSG_CHANNEL_EOF = 96;
- public static final int SSH_MSG_CHANNEL_CLOSE = 97;
- public static final int SSH_MSG_CHANNEL_REQUEST = 98;
- public static final int SSH_MSG_CHANNEL_SUCCESS = 99;
- public static final int SSH_MSG_CHANNEL_FAILURE = 100;
-
- public static final int SSH_EXTENDED_DATA_STDERR = 1;
-
- public static final int SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT = 1;
- public static final int SSH_DISCONNECT_PROTOCOL_ERROR = 2;
- public static final int SSH_DISCONNECT_KEY_EXCHANGE_FAILED = 3;
- public static final int SSH_DISCONNECT_RESERVED = 4;
- public static final int SSH_DISCONNECT_MAC_ERROR = 5;
- public static final int SSH_DISCONNECT_COMPRESSION_ERROR = 6;
- public static final int SSH_DISCONNECT_SERVICE_NOT_AVAILABLE = 7;
- public static final int SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED = 8;
- public static final int SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE = 9;
- public static final int SSH_DISCONNECT_CONNECTION_LOST = 10;
- public static final int SSH_DISCONNECT_BY_APPLICATION = 11;
- public static final int SSH_DISCONNECT_TOO_MANY_CONNECTIONS = 12;
- public static final int SSH_DISCONNECT_AUTH_CANCELLED_BY_USER = 13;
- public static final int SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE = 14;
- public static final int SSH_DISCONNECT_ILLEGAL_USER_NAME = 15;
-
- public static final int SSH_OPEN_ADMINISTRATIVELY_PROHIBITED = 1;
- public static final int SSH_OPEN_CONNECT_FAILED = 2;
- public static final int SSH_OPEN_UNKNOWN_CHANNEL_TYPE = 3;
- public static final int SSH_OPEN_RESOURCE_SHORTAGE = 4;
-
- private static final String[] reverseNames = new String[101];
-
- static
- {
- reverseNames[1] = "SSH_MSG_DISCONNECT";
- reverseNames[2] = "SSH_MSG_IGNORE";
- reverseNames[3] = "SSH_MSG_UNIMPLEMENTED";
- reverseNames[4] = "SSH_MSG_DEBUG";
- reverseNames[5] = "SSH_MSG_SERVICE_REQUEST";
- reverseNames[6] = "SSH_MSG_SERVICE_ACCEPT";
-
- reverseNames[20] = "SSH_MSG_KEXINIT";
- reverseNames[21] = "SSH_MSG_NEWKEYS";
-
- reverseNames[30] = "SSH_MSG_KEXDH_INIT";
- reverseNames[31] = "SSH_MSG_KEXDH_REPLY/SSH_MSG_KEX_DH_GEX_GROUP";
- reverseNames[32] = "SSH_MSG_KEX_DH_GEX_INIT";
- reverseNames[33] = "SSH_MSG_KEX_DH_GEX_REPLY";
- reverseNames[34] = "SSH_MSG_KEX_DH_GEX_REQUEST";
-
- reverseNames[50] = "SSH_MSG_USERAUTH_REQUEST";
- reverseNames[51] = "SSH_MSG_USERAUTH_FAILURE";
- reverseNames[52] = "SSH_MSG_USERAUTH_SUCCESS";
- reverseNames[53] = "SSH_MSG_USERAUTH_BANNER";
-
- reverseNames[60] = "SSH_MSG_USERAUTH_INFO_REQUEST";
- reverseNames[61] = "SSH_MSG_USERAUTH_INFO_RESPONSE";
-
- reverseNames[80] = "SSH_MSG_GLOBAL_REQUEST";
- reverseNames[81] = "SSH_MSG_REQUEST_SUCCESS";
- reverseNames[82] = "SSH_MSG_REQUEST_FAILURE";
-
- reverseNames[90] = "SSH_MSG_CHANNEL_OPEN";
- reverseNames[91] = "SSH_MSG_CHANNEL_OPEN_CONFIRMATION";
- reverseNames[92] = "SSH_MSG_CHANNEL_OPEN_FAILURE";
- reverseNames[93] = "SSH_MSG_CHANNEL_WINDOW_ADJUST";
- reverseNames[94] = "SSH_MSG_CHANNEL_DATA";
- reverseNames[95] = "SSH_MSG_CHANNEL_EXTENDED_DATA";
- reverseNames[96] = "SSH_MSG_CHANNEL_EOF";
- reverseNames[97] = "SSH_MSG_CHANNEL_CLOSE";
- reverseNames[98] = "SSH_MSG_CHANNEL_REQUEST";
- reverseNames[99] = "SSH_MSG_CHANNEL_SUCCESS";
- reverseNames[100] = "SSH_MSG_CHANNEL_FAILURE";
- }
-
- public static final String getMessageName(int type)
- {
- String res = null;
-
- if ((type >= 0) && (type < reverseNames.length))
- {
- res = reverseNames[type];
- }
-
- return (res == null) ? ("UNKNOWN MSG " + type) : res;
- }
-
- // public static final void debug(String tag, byte[] msg)
- // {
- // System.err.println(tag + " Type: " + msg[0] + ", LEN: " + msg.length);
- //
- // for (int i = 0; i < msg.length; i++)
- // {
- // if (((msg[i] >= 'a') && (msg[i] <= 'z')) || ((msg[i] >= 'A') && (msg[i] <= 'Z'))
- // || ((msg[i] >= '0') && (msg[i] <= '9')) || (msg[i] == ' '))
- // System.err.print((char) msg[i]);
- // else
- // System.err.print(".");
- // }
- // System.err.println();
- // System.err.flush();
- // }
-}
+ +package com.trilead.ssh2.packets; + +/** + * Packets. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Packets.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class Packets +{ + public static final int SSH_MSG_DISCONNECT = 1; + public static final int SSH_MSG_IGNORE = 2; + public static final int SSH_MSG_UNIMPLEMENTED = 3; + public static final int SSH_MSG_DEBUG = 4; + public static final int SSH_MSG_SERVICE_REQUEST = 5; + public static final int SSH_MSG_SERVICE_ACCEPT = 6; + + public static final int SSH_MSG_KEXINIT = 20; + public static final int SSH_MSG_NEWKEYS = 21; + + public static final int SSH_MSG_KEXDH_INIT = 30; + public static final int SSH_MSG_KEXDH_REPLY = 31; + + public static final int SSH_MSG_KEX_DH_GEX_REQUEST_OLD = 30; + public static final int SSH_MSG_KEX_DH_GEX_REQUEST = 34; + public static final int SSH_MSG_KEX_DH_GEX_GROUP = 31; + public static final int SSH_MSG_KEX_DH_GEX_INIT = 32; + public static final int SSH_MSG_KEX_DH_GEX_REPLY = 33; + + public static final int SSH_MSG_USERAUTH_REQUEST = 50; + public static final int SSH_MSG_USERAUTH_FAILURE = 51; + public static final int SSH_MSG_USERAUTH_SUCCESS = 52; + public static final int SSH_MSG_USERAUTH_BANNER = 53; + public static final int SSH_MSG_USERAUTH_INFO_REQUEST = 60; + public static final int SSH_MSG_USERAUTH_INFO_RESPONSE = 61; + + public static final int SSH_MSG_GLOBAL_REQUEST = 80; + public static final int SSH_MSG_REQUEST_SUCCESS = 81; + public static final int SSH_MSG_REQUEST_FAILURE = 82; + + public static final int SSH_MSG_CHANNEL_OPEN = 90; + public static final int SSH_MSG_CHANNEL_OPEN_CONFIRMATION = 91; + public static final int SSH_MSG_CHANNEL_OPEN_FAILURE = 92; + public static final int SSH_MSG_CHANNEL_WINDOW_ADJUST = 93; + public static final int SSH_MSG_CHANNEL_DATA = 94; + public static final int SSH_MSG_CHANNEL_EXTENDED_DATA = 95; + public static final int SSH_MSG_CHANNEL_EOF = 96; + public static final int SSH_MSG_CHANNEL_CLOSE = 97; + public static final int SSH_MSG_CHANNEL_REQUEST = 98; + public static final int SSH_MSG_CHANNEL_SUCCESS = 99; + public static final int SSH_MSG_CHANNEL_FAILURE = 100; + + public static final int SSH_EXTENDED_DATA_STDERR = 1; + + public static final int SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT = 1; + public static final int SSH_DISCONNECT_PROTOCOL_ERROR = 2; + public static final int SSH_DISCONNECT_KEY_EXCHANGE_FAILED = 3; + public static final int SSH_DISCONNECT_RESERVED = 4; + public static final int SSH_DISCONNECT_MAC_ERROR = 5; + public static final int SSH_DISCONNECT_COMPRESSION_ERROR = 6; + public static final int SSH_DISCONNECT_SERVICE_NOT_AVAILABLE = 7; + public static final int SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED = 8; + public static final int SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE = 9; + public static final int SSH_DISCONNECT_CONNECTION_LOST = 10; + public static final int SSH_DISCONNECT_BY_APPLICATION = 11; + public static final int SSH_DISCONNECT_TOO_MANY_CONNECTIONS = 12; + public static final int SSH_DISCONNECT_AUTH_CANCELLED_BY_USER = 13; + public static final int SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE = 14; + public static final int SSH_DISCONNECT_ILLEGAL_USER_NAME = 15; + + public static final int SSH_OPEN_ADMINISTRATIVELY_PROHIBITED = 1; + public static final int SSH_OPEN_CONNECT_FAILED = 2; + public static final int SSH_OPEN_UNKNOWN_CHANNEL_TYPE = 3; + public static final int SSH_OPEN_RESOURCE_SHORTAGE = 4; + + private static final String[] reverseNames = new String[101]; + + static + { + reverseNames[1] = "SSH_MSG_DISCONNECT"; + reverseNames[2] = "SSH_MSG_IGNORE"; + reverseNames[3] = "SSH_MSG_UNIMPLEMENTED"; + reverseNames[4] = "SSH_MSG_DEBUG"; + reverseNames[5] = "SSH_MSG_SERVICE_REQUEST"; + reverseNames[6] = "SSH_MSG_SERVICE_ACCEPT"; + + reverseNames[20] = "SSH_MSG_KEXINIT"; + reverseNames[21] = "SSH_MSG_NEWKEYS"; + + reverseNames[30] = "SSH_MSG_KEXDH_INIT"; + reverseNames[31] = "SSH_MSG_KEXDH_REPLY/SSH_MSG_KEX_DH_GEX_GROUP"; + reverseNames[32] = "SSH_MSG_KEX_DH_GEX_INIT"; + reverseNames[33] = "SSH_MSG_KEX_DH_GEX_REPLY"; + reverseNames[34] = "SSH_MSG_KEX_DH_GEX_REQUEST"; + + reverseNames[50] = "SSH_MSG_USERAUTH_REQUEST"; + reverseNames[51] = "SSH_MSG_USERAUTH_FAILURE"; + reverseNames[52] = "SSH_MSG_USERAUTH_SUCCESS"; + reverseNames[53] = "SSH_MSG_USERAUTH_BANNER"; + + reverseNames[60] = "SSH_MSG_USERAUTH_INFO_REQUEST"; + reverseNames[61] = "SSH_MSG_USERAUTH_INFO_RESPONSE"; + + reverseNames[80] = "SSH_MSG_GLOBAL_REQUEST"; + reverseNames[81] = "SSH_MSG_REQUEST_SUCCESS"; + reverseNames[82] = "SSH_MSG_REQUEST_FAILURE"; + + reverseNames[90] = "SSH_MSG_CHANNEL_OPEN"; + reverseNames[91] = "SSH_MSG_CHANNEL_OPEN_CONFIRMATION"; + reverseNames[92] = "SSH_MSG_CHANNEL_OPEN_FAILURE"; + reverseNames[93] = "SSH_MSG_CHANNEL_WINDOW_ADJUST"; + reverseNames[94] = "SSH_MSG_CHANNEL_DATA"; + reverseNames[95] = "SSH_MSG_CHANNEL_EXTENDED_DATA"; + reverseNames[96] = "SSH_MSG_CHANNEL_EOF"; + reverseNames[97] = "SSH_MSG_CHANNEL_CLOSE"; + reverseNames[98] = "SSH_MSG_CHANNEL_REQUEST"; + reverseNames[99] = "SSH_MSG_CHANNEL_SUCCESS"; + reverseNames[100] = "SSH_MSG_CHANNEL_FAILURE"; + } + + public static final String getMessageName(int type) + { + String res = null; + + if ((type >= 0) && (type < reverseNames.length)) + { + res = reverseNames[type]; + } + + return (res == null) ? ("UNKNOWN MSG " + type) : res; + } + + // public static final void debug(String tag, byte[] msg) + // { + // System.err.println(tag + " Type: " + msg[0] + ", LEN: " + msg.length); + // + // for (int i = 0; i < msg.length; i++) + // { + // if (((msg[i] >= 'a') && (msg[i] <= 'z')) || ((msg[i] >= 'A') && (msg[i] <= 'Z')) + // || ((msg[i] >= '0') && (msg[i] <= '9')) || (msg[i] == ' ')) + // System.err.print((char) msg[i]); + // else + // System.err.print("."); + // } + // System.err.println(); + // System.err.flush(); + // } +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/TypesReader.java b/lib/src/main/java/com/trilead/ssh2/packets/TypesReader.java index c8d73e7..28f5363 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/TypesReader.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/TypesReader.java @@ -1,177 +1,177 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-import java.math.BigInteger;
-
-import com.trilead.ssh2.util.Tokenizer;
-
-
-/**
- * TypesReader.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TypesReader.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TypesReader
-{
- byte[] arr;
- int pos = 0;
- int max = 0;
-
- public TypesReader(byte[] arr)
- {
- this.arr = arr;
- pos = 0;
- max = arr.length;
- }
-
- public TypesReader(byte[] arr, int off)
- {
- this.arr = arr;
- this.pos = off;
- this.max = arr.length;
-
- if ((pos < 0) || (pos > arr.length))
- throw new IllegalArgumentException("Illegal offset.");
- }
-
- public TypesReader(byte[] arr, int off, int len)
- {
- this.arr = arr;
- this.pos = off;
- this.max = off + len;
-
- if ((pos < 0) || (pos > arr.length))
- throw new IllegalArgumentException("Illegal offset.");
-
- if ((max < 0) || (max > arr.length))
- throw new IllegalArgumentException("Illegal length.");
- }
-
- public int readByte() throws IOException
- {
- if (pos >= max)
- throw new IOException("Packet too short.");
-
- return (arr[pos++] & 0xff);
- }
-
- public byte[] readBytes(int len) throws IOException
- {
- if ((pos + len) > max)
- throw new IOException("Packet too short.");
-
- byte[] res = new byte[len];
-
- System.arraycopy(arr, pos, res, 0, len);
- pos += len;
-
- return res;
- }
-
- public void readBytes(byte[] dst, int off, int len) throws IOException
- {
- if ((pos + len) > max)
- throw new IOException("Packet too short.");
-
- System.arraycopy(arr, pos, dst, off, len);
- pos += len;
- }
-
- public boolean readBoolean() throws IOException
- {
- if (pos >= max)
- throw new IOException("Packet too short.");
-
- return (arr[pos++] != 0);
- }
-
- public int readUINT32() throws IOException
- {
- if ((pos + 4) > max)
- throw new IOException("Packet too short.");
-
- return ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
- | (arr[pos++] & 0xff);
- }
-
- public long readUINT64() throws IOException
- {
- if ((pos + 8) > max)
- throw new IOException("Packet too short.");
-
- long high = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
- | (arr[pos++] & 0xff); /* sign extension may take place - will be shifted away =) */
-
- long low = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
- | (arr[pos++] & 0xff); /* sign extension may take place - handle below */
-
- return (high << 32) | (low & 0xffffffffl); /* see Java language spec (15.22.1, 5.6.2) */
- }
-
- public BigInteger readMPINT() throws IOException
- {
- BigInteger b;
-
- byte raw[] = readByteString();
-
- if (raw.length == 0)
- b = BigInteger.ZERO;
- else
- b = new BigInteger(raw);
-
- return b;
- }
-
- public byte[] readByteString() throws IOException
- {
- int len = readUINT32();
-
- if ((len + pos) > max)
- throw new IOException("Malformed SSH byte string.");
-
- byte[] res = new byte[len];
- System.arraycopy(arr, pos, res, 0, len);
- pos += len;
- return res;
- }
-
- public String readString(String charsetName) throws IOException
- {
- int len = readUINT32();
-
- if ((len + pos) > max)
- throw new IOException("Malformed SSH string.");
-
- String res = (charsetName == null) ? new String(arr, pos, len) : new String(arr, pos, len, charsetName);
- pos += len;
-
- return res;
- }
-
- public String readString() throws IOException
- {
- int len = readUINT32();
-
- if ((len + pos) > max)
- throw new IOException("Malformed SSH string.");
-
- String res = new String(arr, pos, len, "ISO-8859-1");
-
- pos += len;
-
- return res;
- }
-
- public String[] readNameList() throws IOException
- {
- return Tokenizer.parseTokens(readString(), ',');
- }
-
- public int remain()
- {
- return max - pos;
- }
-
-}
+ +package com.trilead.ssh2.packets; + +import java.io.IOException; +import java.math.BigInteger; + +import com.trilead.ssh2.util.Tokenizer; + + +/** + * TypesReader. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: TypesReader.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class TypesReader +{ + byte[] arr; + int pos = 0; + int max = 0; + + public TypesReader(byte[] arr) + { + this.arr = arr; + pos = 0; + max = arr.length; + } + + public TypesReader(byte[] arr, int off) + { + this.arr = arr; + this.pos = off; + this.max = arr.length; + + if ((pos < 0) || (pos > arr.length)) + throw new IllegalArgumentException("Illegal offset."); + } + + public TypesReader(byte[] arr, int off, int len) + { + this.arr = arr; + this.pos = off; + this.max = off + len; + + if ((pos < 0) || (pos > arr.length)) + throw new IllegalArgumentException("Illegal offset."); + + if ((max < 0) || (max > arr.length)) + throw new IllegalArgumentException("Illegal length."); + } + + public int readByte() throws IOException + { + if (pos >= max) + throw new IOException("Packet too short."); + + return (arr[pos++] & 0xff); + } + + public byte[] readBytes(int len) throws IOException + { + if ((pos + len) > max) + throw new IOException("Packet too short."); + + byte[] res = new byte[len]; + + System.arraycopy(arr, pos, res, 0, len); + pos += len; + + return res; + } + + public void readBytes(byte[] dst, int off, int len) throws IOException + { + if ((pos + len) > max) + throw new IOException("Packet too short."); + + System.arraycopy(arr, pos, dst, off, len); + pos += len; + } + + public boolean readBoolean() throws IOException + { + if (pos >= max) + throw new IOException("Packet too short."); + + return (arr[pos++] != 0); + } + + public int readUINT32() throws IOException + { + if ((pos + 4) > max) + throw new IOException("Packet too short."); + + return ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8) + | (arr[pos++] & 0xff); + } + + public long readUINT64() throws IOException + { + if ((pos + 8) > max) + throw new IOException("Packet too short."); + + long high = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8) + | (arr[pos++] & 0xff); /* sign extension may take place - will be shifted away =) */ + + long low = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8) + | (arr[pos++] & 0xff); /* sign extension may take place - handle below */ + + return (high << 32) | (low & 0xffffffffl); /* see Java language spec (15.22.1, 5.6.2) */ + } + + public BigInteger readMPINT() throws IOException + { + BigInteger b; + + byte raw[] = readByteString(); + + if (raw.length == 0) + b = BigInteger.ZERO; + else + b = new BigInteger(raw); + + return b; + } + + public byte[] readByteString() throws IOException + { + int len = readUINT32(); + + if ((len + pos) > max) + throw new IOException("Malformed SSH byte string."); + + byte[] res = new byte[len]; + System.arraycopy(arr, pos, res, 0, len); + pos += len; + return res; + } + + public String readString(String charsetName) throws IOException + { + int len = readUINT32(); + + if ((len + pos) > max) + throw new IOException("Malformed SSH string."); + + String res = (charsetName == null) ? new String(arr, pos, len) : new String(arr, pos, len, charsetName); + pos += len; + + return res; + } + + public String readString() throws IOException + { + int len = readUINT32(); + + if ((len + pos) > max) + throw new IOException("Malformed SSH string."); + + String res = new String(arr, pos, len, "ISO-8859-1"); + + pos += len; + + return res; + } + + public String[] readNameList() throws IOException + { + return Tokenizer.parseTokens(readString(), ','); + } + + public int remain() + { + return max - pos; + } + +} diff --git a/lib/src/main/java/com/trilead/ssh2/packets/TypesWriter.java b/lib/src/main/java/com/trilead/ssh2/packets/TypesWriter.java index f2e5ef3..9f7336b 100644 --- a/lib/src/main/java/com/trilead/ssh2/packets/TypesWriter.java +++ b/lib/src/main/java/com/trilead/ssh2/packets/TypesWriter.java @@ -1,169 +1,169 @@ -
-package com.trilead.ssh2.packets;
-
-import java.io.UnsupportedEncodingException;
-import java.math.BigInteger;
-
-/**
- * TypesWriter.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TypesWriter.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TypesWriter
-{
- byte arr[];
- int pos;
-
- public TypesWriter()
- {
- arr = new byte[256];
- pos = 0;
- }
-
- private void resize(int len)
- {
- byte new_arr[] = new byte[len];
- System.arraycopy(arr, 0, new_arr, 0, arr.length);
- arr = new_arr;
- }
-
- public int length()
- {
- return pos;
- }
-
- public byte[] getBytes()
- {
- byte[] dst = new byte[pos];
- System.arraycopy(arr, 0, dst, 0, pos);
- return dst;
- }
-
- public void getBytes(byte dst[])
- {
- System.arraycopy(arr, 0, dst, 0, pos);
- }
-
- public void writeUINT32(int val, int off)
- {
- if ((off + 4) > arr.length)
- resize(off + 32);
-
- arr[off++] = (byte) (val >> 24);
- arr[off++] = (byte) (val >> 16);
- arr[off++] = (byte) (val >> 8);
- arr[off++] = (byte) val;
- }
-
- public void writeUINT32(int val)
- {
- writeUINT32(val, pos);
- pos += 4;
- }
-
- public void writeUINT64(long val)
- {
- if ((pos + 8) > arr.length)
- resize(arr.length + 32);
-
- arr[pos++] = (byte) (val >> 56);
- arr[pos++] = (byte) (val >> 48);
- arr[pos++] = (byte) (val >> 40);
- arr[pos++] = (byte) (val >> 32);
- arr[pos++] = (byte) (val >> 24);
- arr[pos++] = (byte) (val >> 16);
- arr[pos++] = (byte) (val >> 8);
- arr[pos++] = (byte) val;
- }
-
- public void writeBoolean(boolean v)
- {
- if ((pos + 1) > arr.length)
- resize(arr.length + 32);
-
- arr[pos++] = v ? (byte) 1 : (byte) 0;
- }
-
- public void writeByte(int v, int off)
- {
- if ((off + 1) > arr.length)
- resize(off + 32);
-
- arr[off] = (byte) v;
- }
-
- public void writeByte(int v)
- {
- writeByte(v, pos);
- pos++;
- }
-
- public void writeMPInt(BigInteger b)
- {
- byte raw[] = b.toByteArray();
-
- if ((raw.length == 1) && (raw[0] == 0))
- writeUINT32(0); /* String with zero bytes of data */
- else
- writeString(raw, 0, raw.length);
- }
-
- public void writeBytes(byte[] buff)
- {
- writeBytes(buff, 0, buff.length);
- }
-
- public void writeBytes(byte[] buff, int off, int len)
- {
- if ((pos + len) > arr.length)
- resize(arr.length + len + 32);
-
- System.arraycopy(buff, off, arr, pos, len);
- pos += len;
- }
-
- public void writeString(byte[] buff, int off, int len)
- {
- writeUINT32(len);
- writeBytes(buff, off, len);
- }
-
- public void writeString(String v)
- {
- byte[] b;
-
- try
- {
- /* All Java JVMs must support ISO-8859-1 */
- b = v.getBytes("ISO-8859-1");
- }
- catch (UnsupportedEncodingException ignore)
- {
- b = v.getBytes();
- }
-
- writeUINT32(b.length);
- writeBytes(b, 0, b.length);
- }
-
- public void writeString(String v, String charsetName) throws UnsupportedEncodingException
- {
- byte[] b = (charsetName == null) ? v.getBytes() : v.getBytes(charsetName);
-
- writeUINT32(b.length);
- writeBytes(b, 0, b.length);
- }
-
- public void writeNameList(String v[])
- {
- StringBuffer sb = new StringBuffer();
- for (int i = 0; i < v.length; i++)
- {
- if (i > 0)
- sb.append(',');
- sb.append(v[i]);
- }
- writeString(sb.toString());
- }
-}
+ +package com.trilead.ssh2.packets; + +import java.io.UnsupportedEncodingException; +import java.math.BigInteger; + +/** + * TypesWriter. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: TypesWriter.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class TypesWriter +{ + byte arr[]; + int pos; + + public TypesWriter() + { + arr = new byte[256]; + pos = 0; + } + + private void resize(int len) + { + byte new_arr[] = new byte[len]; + System.arraycopy(arr, 0, new_arr, 0, arr.length); + arr = new_arr; + } + + public int length() + { + return pos; + } + + public byte[] getBytes() + { + byte[] dst = new byte[pos]; + System.arraycopy(arr, 0, dst, 0, pos); + return dst; + } + + public void getBytes(byte dst[]) + { + System.arraycopy(arr, 0, dst, 0, pos); + } + + public void writeUINT32(int val, int off) + { + if ((off + 4) > arr.length) + resize(off + 32); + + arr[off++] = (byte) (val >> 24); + arr[off++] = (byte) (val >> 16); + arr[off++] = (byte) (val >> 8); + arr[off++] = (byte) val; + } + + public void writeUINT32(int val) + { + writeUINT32(val, pos); + pos += 4; + } + + public void writeUINT64(long val) + { + if ((pos + 8) > arr.length) + resize(arr.length + 32); + + arr[pos++] = (byte) (val >> 56); + arr[pos++] = (byte) (val >> 48); + arr[pos++] = (byte) (val >> 40); + arr[pos++] = (byte) (val >> 32); + arr[pos++] = (byte) (val >> 24); + arr[pos++] = (byte) (val >> 16); + arr[pos++] = (byte) (val >> 8); + arr[pos++] = (byte) val; + } + + public void writeBoolean(boolean v) + { + if ((pos + 1) > arr.length) + resize(arr.length + 32); + + arr[pos++] = v ? (byte) 1 : (byte) 0; + } + + public void writeByte(int v, int off) + { + if ((off + 1) > arr.length) + resize(off + 32); + + arr[off] = (byte) v; + } + + public void writeByte(int v) + { + writeByte(v, pos); + pos++; + } + + public void writeMPInt(BigInteger b) + { + byte raw[] = b.toByteArray(); + + if ((raw.length == 1) && (raw[0] == 0)) + writeUINT32(0); /* String with zero bytes of data */ + else + writeString(raw, 0, raw.length); + } + + public void writeBytes(byte[] buff) + { + writeBytes(buff, 0, buff.length); + } + + public void writeBytes(byte[] buff, int off, int len) + { + if ((pos + len) > arr.length) + resize(arr.length + len + 32); + + System.arraycopy(buff, off, arr, pos, len); + pos += len; + } + + public void writeString(byte[] buff, int off, int len) + { + writeUINT32(len); + writeBytes(buff, off, len); + } + + public void writeString(String v) + { + byte[] b; + + try + { + /* All Java JVMs must support ISO-8859-1 */ + b = v.getBytes("ISO-8859-1"); + } + catch (UnsupportedEncodingException ignore) + { + b = v.getBytes(); + } + + writeUINT32(b.length); + writeBytes(b, 0, b.length); + } + + public void writeString(String v, String charsetName) throws UnsupportedEncodingException + { + byte[] b = (charsetName == null) ? v.getBytes() : v.getBytes(charsetName); + + writeUINT32(b.length); + writeBytes(b, 0, b.length); + } + + public void writeNameList(String v[]) + { + StringBuffer sb = new StringBuffer(); + for (int i = 0; i < v.length; i++) + { + if (i > 0) + sb.append(','); + sb.append(v[i]); + } + writeString(sb.toString()); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java b/lib/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java index 7bac60f..19f0525 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java @@ -1,38 +1,38 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * Values for the 'text-hint' field in the SFTP ATTRS data type.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttrTextHints.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttrTextHints
-{
- /**
- * The server knows the file is a text file, and should be opened
- * using the SSH_FXF_ACCESS_TEXT_MODE flag.
- */
- public static final int SSH_FILEXFER_ATTR_KNOWN_TEXT = 0x00;
-
- /**
- * The server has applied a heuristic or other mechanism and
- * believes that the file should be opened with the
- * SSH_FXF_ACCESS_TEXT_MODE flag.
- */
- public static final int SSH_FILEXFER_ATTR_GUESSED_TEXT = 0x01;
-
- /**
- * The server knows the file has binary content.
- */
- public static final int SSH_FILEXFER_ATTR_KNOWN_BINARY = 0x02;
-
- /**
- * The server has applied a heuristic or other mechanism and
- * believes has binary content, and should not be opened with the
- * SSH_FXF_ACCESS_TEXT_MODE flag.
- */
- public static final int SSH_FILEXFER_ATTR_GUESSED_BINARY = 0x03;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * Values for the 'text-hint' field in the SFTP ATTRS data type. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AttrTextHints.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class AttrTextHints +{ + /** + * The server knows the file is a text file, and should be opened + * using the SSH_FXF_ACCESS_TEXT_MODE flag. + */ + public static final int SSH_FILEXFER_ATTR_KNOWN_TEXT = 0x00; + + /** + * The server has applied a heuristic or other mechanism and + * believes that the file should be opened with the + * SSH_FXF_ACCESS_TEXT_MODE flag. + */ + public static final int SSH_FILEXFER_ATTR_GUESSED_TEXT = 0x01; + + /** + * The server knows the file has binary content. + */ + public static final int SSH_FILEXFER_ATTR_KNOWN_BINARY = 0x02; + + /** + * The server has applied a heuristic or other mechanism and + * believes has binary content, and should not be opened with the + * SSH_FXF_ACCESS_TEXT_MODE flag. + */ + public static final int SSH_FILEXFER_ATTR_GUESSED_BINARY = 0x03; +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/AttribBits.java b/lib/src/main/java/com/trilead/ssh2/sftp/AttribBits.java index f040673..b143613 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/AttribBits.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/AttribBits.java @@ -1,129 +1,129 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Attribute Bits for the "attrib-bits" and "attrib-bits-valid" fields
- * of the SFTP ATTR data type.
- * <p>
- * Yes, these are the "attrib-bits", even though they have "_FLAGS_" in
- * their name. Don't ask - I did not invent it.
- * <p>
- * "<i>These fields, taken together, reflect various attributes of the file
- * or directory, on the server. Bits not set in 'attrib-bits-valid' MUST be
- * ignored in the 'attrib-bits' field. This allows both the server and the
- * client to communicate only the bits it knows about without inadvertently
- * twiddling bits they don't understand.</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribBits.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribBits
-{
- /**
- * Advisory, read-only bit. This bit is not part of the access
- * control information on the file, but is rather an advisory field
- * indicating that the file should not be written.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_READONLY = 0x00000001;
-
- /**
- * The file is part of the operating system.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_SYSTEM = 0x00000002;
-
- /**
- * File SHOULD NOT be shown to user unless specifically requested.
- * For example, most UNIX systems SHOULD set this bit if the filename
- * begins with a 'period'. This bit may be read-only (see section 5.4 of
- * the SFTP standard draft). Most UNIX systems will not allow this to be
- * changed.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_HIDDEN = 0x00000004;
-
- /**
- * This attribute applies only to directories. This attribute is
- * always read-only, and cannot be modified. This attribute means
- * that files and directory names in this directory should be compared
- * without regard to case.
- * <p>
- * It is recommended that where possible, the server's filesystem be
- * allowed to do comparisons. For example, if a client wished to prompt
- * a user before overwriting a file, it should not compare the new name
- * with the previously retrieved list of names in the directory. Rather,
- * it should first try to create the new file by specifying
- * SSH_FXF_CREATE_NEW flag. Then, if this fails and returns
- * SSH_FX_FILE_ALREADY_EXISTS, it should prompt the user and then retry
- * the create specifying SSH_FXF_CREATE_TRUNCATE.
- * <p>
- * Unless otherwise specified, filenames are assumed to be case sensitive.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE = 0x00000008;
-
- /**
- * The file should be included in backup / archive operations.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_ARCHIVE = 0x00000010;
-
- /**
- * The file is stored on disk using file-system level transparent
- * encryption. This flag does not affect the file data on the wire
- * (for either READ or WRITE requests.)
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED = 0x00000020;
-
- /**
- * The file is stored on disk using file-system level transparent
- * compression. This flag does not affect the file data on the wire.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_COMPRESSED = 0x00000040;
-
- /**
- * The file is a sparse file; this means that file blocks that have
- * not been explicitly written are not stored on disk. For example, if
- * a client writes a buffer at 10 M from the beginning of the file,
- * the blocks between the previous EOF marker and the 10 M offset would
- * not consume physical disk space.
- * <p>
- * Some servers may store all files as sparse files, in which case
- * this bit will be unconditionally set. Other servers may not have
- * a mechanism for determining if the file is sparse, and so the file
- * MAY be stored sparse even if this flag is not set.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_SPARSE = 0x00000080;
-
- /**
- * Opening the file without either the SSH_FXF_ACCESS_APPEND_DATA or
- * the SSH_FXF_ACCESS_APPEND_DATA_ATOMIC flag (see section 8.1.1.3
- * of the SFTP standard draft) MUST result in an
- * SSH_FX_INVALID_PARAMETER error.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY = 0x00000100;
-
- /**
- * The file cannot be deleted or renamed, no hard link can be created
- * to this file, and no data can be written to the file.
- * <p>
- * This bit implies a stronger level of protection than
- * SSH_FILEXFER_ATTR_FLAGS_READONLY, the file permission mask or ACLs.
- * Typically even the superuser cannot write to immutable files, and
- * only the superuser can set or remove the bit.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE = 0x00000200;
-
- /**
- * When the file is modified, the changes are written synchronously
- * to the disk.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_SYNC = 0x00000400;
-
- /**
- * The server MAY include this bit in a directory listing or realpath
- * response. It indicates there was a failure in the translation to UTF-8.
- * If this flag is included, the server SHOULD also include the
- * UNTRANSLATED_NAME attribute.
- */
- public static final int SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR = 0x00000800;
-
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * SFTP Attribute Bits for the "attrib-bits" and "attrib-bits-valid" fields + * of the SFTP ATTR data type. + * <p> + * Yes, these are the "attrib-bits", even though they have "_FLAGS_" in + * their name. Don't ask - I did not invent it. + * <p> + * "<i>These fields, taken together, reflect various attributes of the file + * or directory, on the server. Bits not set in 'attrib-bits-valid' MUST be + * ignored in the 'attrib-bits' field. This allows both the server and the + * client to communicate only the bits it knows about without inadvertently + * twiddling bits they don't understand.</i>" + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AttribBits.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class AttribBits +{ + /** + * Advisory, read-only bit. This bit is not part of the access + * control information on the file, but is rather an advisory field + * indicating that the file should not be written. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_READONLY = 0x00000001; + + /** + * The file is part of the operating system. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_SYSTEM = 0x00000002; + + /** + * File SHOULD NOT be shown to user unless specifically requested. + * For example, most UNIX systems SHOULD set this bit if the filename + * begins with a 'period'. This bit may be read-only (see section 5.4 of + * the SFTP standard draft). Most UNIX systems will not allow this to be + * changed. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_HIDDEN = 0x00000004; + + /** + * This attribute applies only to directories. This attribute is + * always read-only, and cannot be modified. This attribute means + * that files and directory names in this directory should be compared + * without regard to case. + * <p> + * It is recommended that where possible, the server's filesystem be + * allowed to do comparisons. For example, if a client wished to prompt + * a user before overwriting a file, it should not compare the new name + * with the previously retrieved list of names in the directory. Rather, + * it should first try to create the new file by specifying + * SSH_FXF_CREATE_NEW flag. Then, if this fails and returns + * SSH_FX_FILE_ALREADY_EXISTS, it should prompt the user and then retry + * the create specifying SSH_FXF_CREATE_TRUNCATE. + * <p> + * Unless otherwise specified, filenames are assumed to be case sensitive. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE = 0x00000008; + + /** + * The file should be included in backup / archive operations. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_ARCHIVE = 0x00000010; + + /** + * The file is stored on disk using file-system level transparent + * encryption. This flag does not affect the file data on the wire + * (for either READ or WRITE requests.) + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED = 0x00000020; + + /** + * The file is stored on disk using file-system level transparent + * compression. This flag does not affect the file data on the wire. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_COMPRESSED = 0x00000040; + + /** + * The file is a sparse file; this means that file blocks that have + * not been explicitly written are not stored on disk. For example, if + * a client writes a buffer at 10 M from the beginning of the file, + * the blocks between the previous EOF marker and the 10 M offset would + * not consume physical disk space. + * <p> + * Some servers may store all files as sparse files, in which case + * this bit will be unconditionally set. Other servers may not have + * a mechanism for determining if the file is sparse, and so the file + * MAY be stored sparse even if this flag is not set. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_SPARSE = 0x00000080; + + /** + * Opening the file without either the SSH_FXF_ACCESS_APPEND_DATA or + * the SSH_FXF_ACCESS_APPEND_DATA_ATOMIC flag (see section 8.1.1.3 + * of the SFTP standard draft) MUST result in an + * SSH_FX_INVALID_PARAMETER error. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY = 0x00000100; + + /** + * The file cannot be deleted or renamed, no hard link can be created + * to this file, and no data can be written to the file. + * <p> + * This bit implies a stronger level of protection than + * SSH_FILEXFER_ATTR_FLAGS_READONLY, the file permission mask or ACLs. + * Typically even the superuser cannot write to immutable files, and + * only the superuser can set or remove the bit. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE = 0x00000200; + + /** + * When the file is modified, the changes are written synchronously + * to the disk. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_SYNC = 0x00000400; + + /** + * The server MAY include this bit in a directory listing or realpath + * response. It indicates there was a failure in the translation to UTF-8. + * If this flag is included, the server SHOULD also include the + * UNTRANSLATED_NAME attribute. + */ + public static final int SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR = 0x00000800; + +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java b/lib/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java index 28ac613..ea27871 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java @@ -1,112 +1,112 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * Attribute Flags. The 'valid-attribute-flags' field in
- * the SFTP ATTRS data type specifies which of the fields are actually present.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribFlags
-{
- /**
- * Indicates that the 'allocation-size' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_SIZE = 0x00000001;
-
- /** Protocol version 6:
- * 0x00000002 was used in a previous version of this protocol.
- * It is now a reserved value and MUST NOT appear in the mask.
- * Some future version of this protocol may reuse this value.
- */
- public static final int SSH_FILEXFER_ATTR_V3_UIDGID = 0x00000002;
-
- /**
- * Indicates that the 'permissions' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_PERMISSIONS = 0x00000004;
-
- /**
- * Indicates that the 'atime' and 'mtime' field are present
- * (protocol v3).
- */
- public static final int SSH_FILEXFER_ATTR_V3_ACMODTIME = 0x00000008;
-
- /**
- * Indicates that the 'atime' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_ACCESSTIME = 0x00000008;
-
- /**
- * Indicates that the 'createtime' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_CREATETIME = 0x00000010;
-
- /**
- * Indicates that the 'mtime' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_MODIFYTIME = 0x00000020;
-
- /**
- * Indicates that the 'acl' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_ACL = 0x00000040;
-
- /**
- * Indicates that the 'owner' and 'group' fields are present.
- */
- public static final int SSH_FILEXFER_ATTR_OWNERGROUP = 0x00000080;
-
- /**
- * Indicates that additionally to the 'atime', 'createtime',
- * 'mtime' and 'ctime' fields (if present), there is also
- * 'atime-nseconds', 'createtime-nseconds', 'mtime-nseconds'
- * and 'ctime-nseconds'.
- */
- public static final int SSH_FILEXFER_ATTR_SUBSECOND_TIMES = 0x00000100;
-
- /**
- * Indicates that the 'attrib-bits' and 'attrib-bits-valid'
- * fields are present.
- */
- public static final int SSH_FILEXFER_ATTR_BITS = 0x00000200;
-
- /**
- * Indicates that the 'allocation-size' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_ALLOCATION_SIZE = 0x00000400;
-
- /**
- * Indicates that the 'text-hint' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_TEXT_HINT = 0x00000800;
-
- /**
- * Indicates that the 'mime-type' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_MIME_TYPE = 0x00001000;
-
- /**
- * Indicates that the 'link-count' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_LINK_COUNT = 0x00002000;
-
- /**
- * Indicates that the 'untranslated-name' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_UNTRANSLATED_NAME = 0x00004000;
-
- /**
- * Indicates that the 'ctime' field is present.
- */
- public static final int SSH_FILEXFER_ATTR_CTIME = 0x00008000;
-
- /**
- * Indicates that the 'extended-count' field (and probablby some
- * 'extensions') is present.
- */
- public static final int SSH_FILEXFER_ATTR_EXTENDED = 0x80000000;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * Attribute Flags. The 'valid-attribute-flags' field in + * the SFTP ATTRS data type specifies which of the fields are actually present. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AttribFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class AttribFlags +{ + /** + * Indicates that the 'allocation-size' field is present. + */ + public static final int SSH_FILEXFER_ATTR_SIZE = 0x00000001; + + /** Protocol version 6: + * 0x00000002 was used in a previous version of this protocol. + * It is now a reserved value and MUST NOT appear in the mask. + * Some future version of this protocol may reuse this value. + */ + public static final int SSH_FILEXFER_ATTR_V3_UIDGID = 0x00000002; + + /** + * Indicates that the 'permissions' field is present. + */ + public static final int SSH_FILEXFER_ATTR_PERMISSIONS = 0x00000004; + + /** + * Indicates that the 'atime' and 'mtime' field are present + * (protocol v3). + */ + public static final int SSH_FILEXFER_ATTR_V3_ACMODTIME = 0x00000008; + + /** + * Indicates that the 'atime' field is present. + */ + public static final int SSH_FILEXFER_ATTR_ACCESSTIME = 0x00000008; + + /** + * Indicates that the 'createtime' field is present. + */ + public static final int SSH_FILEXFER_ATTR_CREATETIME = 0x00000010; + + /** + * Indicates that the 'mtime' field is present. + */ + public static final int SSH_FILEXFER_ATTR_MODIFYTIME = 0x00000020; + + /** + * Indicates that the 'acl' field is present. + */ + public static final int SSH_FILEXFER_ATTR_ACL = 0x00000040; + + /** + * Indicates that the 'owner' and 'group' fields are present. + */ + public static final int SSH_FILEXFER_ATTR_OWNERGROUP = 0x00000080; + + /** + * Indicates that additionally to the 'atime', 'createtime', + * 'mtime' and 'ctime' fields (if present), there is also + * 'atime-nseconds', 'createtime-nseconds', 'mtime-nseconds' + * and 'ctime-nseconds'. + */ + public static final int SSH_FILEXFER_ATTR_SUBSECOND_TIMES = 0x00000100; + + /** + * Indicates that the 'attrib-bits' and 'attrib-bits-valid' + * fields are present. + */ + public static final int SSH_FILEXFER_ATTR_BITS = 0x00000200; + + /** + * Indicates that the 'allocation-size' field is present. + */ + public static final int SSH_FILEXFER_ATTR_ALLOCATION_SIZE = 0x00000400; + + /** + * Indicates that the 'text-hint' field is present. + */ + public static final int SSH_FILEXFER_ATTR_TEXT_HINT = 0x00000800; + + /** + * Indicates that the 'mime-type' field is present. + */ + public static final int SSH_FILEXFER_ATTR_MIME_TYPE = 0x00001000; + + /** + * Indicates that the 'link-count' field is present. + */ + public static final int SSH_FILEXFER_ATTR_LINK_COUNT = 0x00002000; + + /** + * Indicates that the 'untranslated-name' field is present. + */ + public static final int SSH_FILEXFER_ATTR_UNTRANSLATED_NAME = 0x00004000; + + /** + * Indicates that the 'ctime' field is present. + */ + public static final int SSH_FILEXFER_ATTR_CTIME = 0x00008000; + + /** + * Indicates that the 'extended-count' field (and probablby some + * 'extensions') is present. + */ + public static final int SSH_FILEXFER_ATTR_EXTENDED = 0x80000000; +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java b/lib/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java index 0c946c9..558aa6f 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java @@ -1,32 +1,32 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * Permissions for the 'permissions' field in the SFTP ATTRS data type.
- * <p>
- * "<i>The 'permissions' field contains a bit mask specifying file permissions.
- * These permissions correspond to the st_mode field of the stat structure
- * defined by POSIX [IEEE.1003-1.1996].</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribPermissions.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribPermissions
-{
- /* Octal values! */
-
- public static final int S_IRUSR = 0400;
- public static final int S_IWUSR = 0200;
- public static final int S_IXUSR = 0100;
- public static final int S_IRGRP = 0040;
- public static final int S_IWGRP = 0020;
- public static final int S_IXGRP = 0010;
- public static final int S_IROTH = 0004;
- public static final int S_IWOTH = 0002;
- public static final int S_IXOTH = 0001;
- public static final int S_ISUID = 04000;
- public static final int S_ISGID = 02000;
- public static final int S_ISVTX = 01000;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * Permissions for the 'permissions' field in the SFTP ATTRS data type. + * <p> + * "<i>The 'permissions' field contains a bit mask specifying file permissions. + * These permissions correspond to the st_mode field of the stat structure + * defined by POSIX [IEEE.1003-1.1996].</i>" + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AttribPermissions.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class AttribPermissions +{ + /* Octal values! */ + + public static final int S_IRUSR = 0400; + public static final int S_IWUSR = 0200; + public static final int S_IXUSR = 0100; + public static final int S_IRGRP = 0040; + public static final int S_IWGRP = 0020; + public static final int S_IXGRP = 0010; + public static final int S_IROTH = 0004; + public static final int S_IWOTH = 0002; + public static final int S_IXOTH = 0001; + public static final int S_ISUID = 04000; + public static final int S_ISGID = 02000; + public static final int S_ISVTX = 01000; +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java b/lib/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java index 8cacc3e..e2f4169 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java @@ -1,28 +1,28 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * Types for the 'type' field in the SFTP ATTRS data type.
- * <p>
- * "<i>On a POSIX system, these values would be derived from the mode field
- * of the stat structure. SPECIAL should be used for files that are of
- * a known type which cannot be expressed in the protocol. UNKNOWN
- * should be used if the type is not known.</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribTypes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribTypes
-{
- public static final int SSH_FILEXFER_TYPE_REGULAR = 1;
- public static final int SSH_FILEXFER_TYPE_DIRECTORY = 2;
- public static final int SSH_FILEXFER_TYPE_SYMLINK = 3;
- public static final int SSH_FILEXFER_TYPE_SPECIAL = 4;
- public static final int SSH_FILEXFER_TYPE_UNKNOWN = 5;
- public static final int SSH_FILEXFER_TYPE_SOCKET = 6;
- public static final int SSH_FILEXFER_TYPE_CHAR_DEVICE = 7;
- public static final int SSH_FILEXFER_TYPE_BLOCK_DEVICE = 8;
- public static final int SSH_FILEXFER_TYPE_FIFO = 9;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * Types for the 'type' field in the SFTP ATTRS data type. + * <p> + * "<i>On a POSIX system, these values would be derived from the mode field + * of the stat structure. SPECIAL should be used for files that are of + * a known type which cannot be expressed in the protocol. UNKNOWN + * should be used if the type is not known.</i>" + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: AttribTypes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class AttribTypes +{ + public static final int SSH_FILEXFER_TYPE_REGULAR = 1; + public static final int SSH_FILEXFER_TYPE_DIRECTORY = 2; + public static final int SSH_FILEXFER_TYPE_SYMLINK = 3; + public static final int SSH_FILEXFER_TYPE_SPECIAL = 4; + public static final int SSH_FILEXFER_TYPE_UNKNOWN = 5; + public static final int SSH_FILEXFER_TYPE_SOCKET = 6; + public static final int SSH_FILEXFER_TYPE_CHAR_DEVICE = 7; + public static final int SSH_FILEXFER_TYPE_BLOCK_DEVICE = 8; + public static final int SSH_FILEXFER_TYPE_FIFO = 9; +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java b/lib/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java index 58a0174..7317a00 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java @@ -1,104 +1,104 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Error Codes
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ErrorCodes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class ErrorCodes
-{
- public static final int SSH_FX_OK = 0;
- public static final int SSH_FX_EOF = 1;
- public static final int SSH_FX_NO_SUCH_FILE = 2;
- public static final int SSH_FX_PERMISSION_DENIED = 3;
- public static final int SSH_FX_FAILURE = 4;
- public static final int SSH_FX_BAD_MESSAGE = 5;
- public static final int SSH_FX_NO_CONNECTION = 6;
- public static final int SSH_FX_CONNECTION_LOST = 7;
- public static final int SSH_FX_OP_UNSUPPORTED = 8;
- public static final int SSH_FX_INVALID_HANDLE = 9;
- public static final int SSH_FX_NO_SUCH_PATH = 10;
- public static final int SSH_FX_FILE_ALREADY_EXISTS = 11;
- public static final int SSH_FX_WRITE_PROTECT = 12;
- public static final int SSH_FX_NO_MEDIA = 13;
- public static final int SSH_FX_NO_SPACE_ON_FILESYSTEM = 14;
- public static final int SSH_FX_QUOTA_EXCEEDED = 15;
- public static final int SSH_FX_UNKNOWN_PRINCIPAL = 16;
- public static final int SSH_FX_LOCK_CONFLICT = 17;
- public static final int SSH_FX_DIR_NOT_EMPTY = 18;
- public static final int SSH_FX_NOT_A_DIRECTORY = 19;
- public static final int SSH_FX_INVALID_FILENAME = 20;
- public static final int SSH_FX_LINK_LOOP = 21;
- public static final int SSH_FX_CANNOT_DELETE = 22;
- public static final int SSH_FX_INVALID_PARAMETER = 23;
- public static final int SSH_FX_FILE_IS_A_DIRECTORY = 24;
- public static final int SSH_FX_BYTE_RANGE_LOCK_CONFLICT = 25;
- public static final int SSH_FX_BYTE_RANGE_LOCK_REFUSED = 26;
- public static final int SSH_FX_DELETE_PENDING = 27;
- public static final int SSH_FX_FILE_CORRUPT = 28;
- public static final int SSH_FX_OWNER_INVALID = 29;
- public static final int SSH_FX_GROUP_INVALID = 30;
- public static final int SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK = 31;
-
- private static final String[][] messages = {
-
- { "SSH_FX_OK", "Indicates successful completion of the operation." },
- { "SSH_FX_EOF",
- "An attempt to read past the end-of-file was made; or, there are no more directory entries to return." },
- { "SSH_FX_NO_SUCH_FILE", "A reference was made to a file which does not exist." },
- { "SSH_FX_PERMISSION_DENIED", "The user does not have sufficient permissions to perform the operation." },
- { "SSH_FX_FAILURE", "An error occurred, but no specific error code exists to describe the failure." },
- { "SSH_FX_BAD_MESSAGE", "A badly formatted packet or other SFTP protocol incompatibility was detected." },
- { "SSH_FX_NO_CONNECTION", "There is no connection to the server." },
- { "SSH_FX_CONNECTION_LOST", "The connection to the server was lost." },
- { "SSH_FX_OP_UNSUPPORTED",
- "An attempted operation could not be completed by the server because the server does not support the operation." },
- { "SSH_FX_INVALID_HANDLE", "The handle value was invalid." },
- { "SSH_FX_NO_SUCH_PATH", "The file path does not exist or is invalid." },
- { "SSH_FX_FILE_ALREADY_EXISTS", "The file already exists." },
- { "SSH_FX_WRITE_PROTECT", "The file is on read-only media, or the media is write protected." },
- { "SSH_FX_NO_MEDIA",
- "The requested operation cannot be completed because there is no media available in the drive." },
- { "SSH_FX_NO_SPACE_ON_FILESYSTEM",
- "The requested operation cannot be completed because there is insufficient free space on the filesystem." },
- { "SSH_FX_QUOTA_EXCEEDED",
- "The operation cannot be completed because it would exceed the user's storage quota." },
- {
- "SSH_FX_UNKNOWN_PRINCIPAL",
- "A principal referenced by the request (either the 'owner', 'group', or 'who' field of an ACL), was unknown. The error specific data contains the problematic names." },
- { "SSH_FX_LOCK_CONFLICT", "The file could not be opened because it is locked by another process." },
- { "SSH_FX_DIR_NOT_EMPTY", "The directory is not empty." },
- { "SSH_FX_NOT_A_DIRECTORY", "The specified file is not a directory." },
- { "SSH_FX_INVALID_FILENAME", "The filename is not valid." },
- { "SSH_FX_LINK_LOOP",
- "Too many symbolic links encountered or, an SSH_FXF_NOFOLLOW open encountered a symbolic link as the final component." },
- { "SSH_FX_CANNOT_DELETE",
- "The file cannot be deleted. One possible reason is that the advisory READONLY attribute-bit is set." },
- { "SSH_FX_INVALID_PARAMETER",
- "One of the parameters was out of range, or the parameters specified cannot be used together." },
- { "SSH_FX_FILE_IS_A_DIRECTORY",
- "The specified file was a directory in a context where a directory cannot be used." },
- { "SSH_FX_BYTE_RANGE_LOCK_CONFLICT",
- " A read or write operation failed because another process's mandatory byte-range lock overlaps with the request." },
- { "SSH_FX_BYTE_RANGE_LOCK_REFUSED", "A request for a byte range lock was refused." },
- { "SSH_FX_DELETE_PENDING", "An operation was attempted on a file for which a delete operation is pending." },
- { "SSH_FX_FILE_CORRUPT", "The file is corrupt; an filesystem integrity check should be run." },
- { "SSH_FX_OWNER_INVALID", "The principal specified can not be assigned as an owner of a file." },
- { "SSH_FX_GROUP_INVALID", "The principal specified can not be assigned as the primary group of a file." },
- { "SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK",
- "The requested operation could not be completed because the specifed byte range lock has not been granted." },
-
- };
-
- public static final String[] getDescription(int errorCode)
- {
- if ((errorCode < 0) || (errorCode >= messages.length))
- return null;
-
- return messages[errorCode];
- }
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * SFTP Error Codes + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ErrorCodes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class ErrorCodes +{ + public static final int SSH_FX_OK = 0; + public static final int SSH_FX_EOF = 1; + public static final int SSH_FX_NO_SUCH_FILE = 2; + public static final int SSH_FX_PERMISSION_DENIED = 3; + public static final int SSH_FX_FAILURE = 4; + public static final int SSH_FX_BAD_MESSAGE = 5; + public static final int SSH_FX_NO_CONNECTION = 6; + public static final int SSH_FX_CONNECTION_LOST = 7; + public static final int SSH_FX_OP_UNSUPPORTED = 8; + public static final int SSH_FX_INVALID_HANDLE = 9; + public static final int SSH_FX_NO_SUCH_PATH = 10; + public static final int SSH_FX_FILE_ALREADY_EXISTS = 11; + public static final int SSH_FX_WRITE_PROTECT = 12; + public static final int SSH_FX_NO_MEDIA = 13; + public static final int SSH_FX_NO_SPACE_ON_FILESYSTEM = 14; + public static final int SSH_FX_QUOTA_EXCEEDED = 15; + public static final int SSH_FX_UNKNOWN_PRINCIPAL = 16; + public static final int SSH_FX_LOCK_CONFLICT = 17; + public static final int SSH_FX_DIR_NOT_EMPTY = 18; + public static final int SSH_FX_NOT_A_DIRECTORY = 19; + public static final int SSH_FX_INVALID_FILENAME = 20; + public static final int SSH_FX_LINK_LOOP = 21; + public static final int SSH_FX_CANNOT_DELETE = 22; + public static final int SSH_FX_INVALID_PARAMETER = 23; + public static final int SSH_FX_FILE_IS_A_DIRECTORY = 24; + public static final int SSH_FX_BYTE_RANGE_LOCK_CONFLICT = 25; + public static final int SSH_FX_BYTE_RANGE_LOCK_REFUSED = 26; + public static final int SSH_FX_DELETE_PENDING = 27; + public static final int SSH_FX_FILE_CORRUPT = 28; + public static final int SSH_FX_OWNER_INVALID = 29; + public static final int SSH_FX_GROUP_INVALID = 30; + public static final int SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK = 31; + + private static final String[][] messages = { + + { "SSH_FX_OK", "Indicates successful completion of the operation." }, + { "SSH_FX_EOF", + "An attempt to read past the end-of-file was made; or, there are no more directory entries to return." }, + { "SSH_FX_NO_SUCH_FILE", "A reference was made to a file which does not exist." }, + { "SSH_FX_PERMISSION_DENIED", "The user does not have sufficient permissions to perform the operation." }, + { "SSH_FX_FAILURE", "An error occurred, but no specific error code exists to describe the failure." }, + { "SSH_FX_BAD_MESSAGE", "A badly formatted packet or other SFTP protocol incompatibility was detected." }, + { "SSH_FX_NO_CONNECTION", "There is no connection to the server." }, + { "SSH_FX_CONNECTION_LOST", "The connection to the server was lost." }, + { "SSH_FX_OP_UNSUPPORTED", + "An attempted operation could not be completed by the server because the server does not support the operation." }, + { "SSH_FX_INVALID_HANDLE", "The handle value was invalid." }, + { "SSH_FX_NO_SUCH_PATH", "The file path does not exist or is invalid." }, + { "SSH_FX_FILE_ALREADY_EXISTS", "The file already exists." }, + { "SSH_FX_WRITE_PROTECT", "The file is on read-only media, or the media is write protected." }, + { "SSH_FX_NO_MEDIA", + "The requested operation cannot be completed because there is no media available in the drive." }, + { "SSH_FX_NO_SPACE_ON_FILESYSTEM", + "The requested operation cannot be completed because there is insufficient free space on the filesystem." }, + { "SSH_FX_QUOTA_EXCEEDED", + "The operation cannot be completed because it would exceed the user's storage quota." }, + { + "SSH_FX_UNKNOWN_PRINCIPAL", + "A principal referenced by the request (either the 'owner', 'group', or 'who' field of an ACL), was unknown. The error specific data contains the problematic names." }, + { "SSH_FX_LOCK_CONFLICT", "The file could not be opened because it is locked by another process." }, + { "SSH_FX_DIR_NOT_EMPTY", "The directory is not empty." }, + { "SSH_FX_NOT_A_DIRECTORY", "The specified file is not a directory." }, + { "SSH_FX_INVALID_FILENAME", "The filename is not valid." }, + { "SSH_FX_LINK_LOOP", + "Too many symbolic links encountered or, an SSH_FXF_NOFOLLOW open encountered a symbolic link as the final component." }, + { "SSH_FX_CANNOT_DELETE", + "The file cannot be deleted. One possible reason is that the advisory READONLY attribute-bit is set." }, + { "SSH_FX_INVALID_PARAMETER", + "One of the parameters was out of range, or the parameters specified cannot be used together." }, + { "SSH_FX_FILE_IS_A_DIRECTORY", + "The specified file was a directory in a context where a directory cannot be used." }, + { "SSH_FX_BYTE_RANGE_LOCK_CONFLICT", + " A read or write operation failed because another process's mandatory byte-range lock overlaps with the request." }, + { "SSH_FX_BYTE_RANGE_LOCK_REFUSED", "A request for a byte range lock was refused." }, + { "SSH_FX_DELETE_PENDING", "An operation was attempted on a file for which a delete operation is pending." }, + { "SSH_FX_FILE_CORRUPT", "The file is corrupt; an filesystem integrity check should be run." }, + { "SSH_FX_OWNER_INVALID", "The principal specified can not be assigned as an owner of a file." }, + { "SSH_FX_GROUP_INVALID", "The principal specified can not be assigned as the primary group of a file." }, + { "SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK", + "The requested operation could not be completed because the specifed byte range lock has not been granted." }, + + }; + + public static final String[] getDescription(int errorCode) + { + if ((errorCode < 0) || (errorCode >= messages.length)) + return null; + + return messages[errorCode]; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java b/lib/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java index bad30c3..b2979b9 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java @@ -1,223 +1,223 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Open Flags.
- *
- * The following table is provided to assist in mapping POSIX semantics
- * to equivalent SFTP file open parameters:
- * <p>
- * TODO: This comment should be moved to the open method.
- * <p>
- * <ul>
- * <li>O_RDONLY
- * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_WRONLY
- * <ul><li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_RDWR
- * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES | WRITE_DATA | WRITE_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_APPEND
- * <ul>
- * <li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES | APPEND_DATA</li>
- * <li>flags = SSH_FXF_ACCESS_APPEND_DATA and or SSH_FXF_ACCESS_APPEND_DATA_ATOMIC</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_CREAT
- * <ul>
- * <li>flags = SSH_FXF_OPEN_OR_CREATE</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_TRUNC
- * <ul>
- * <li>flags = SSH_FXF_TRUNCATE_EXISTING</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_TRUNC|O_CREATE
- * <ul>
- * <li>flags = SSH_FXF_CREATE_TRUNCATE</li>
- * </ul>
- * </li>
- * </ul>
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: OpenFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class OpenFlags
-{
- /**
- * Disposition is a 3 bit field that controls how the file is opened.
- * The server MUST support these bits (possible enumaration values:
- * SSH_FXF_CREATE_NEW, SSH_FXF_CREATE_TRUNCATE, SSH_FXF_OPEN_EXISTING,
- * SSH_FXF_OPEN_OR_CREATE or SSH_FXF_TRUNCATE_EXISTING).
- */
- public static final int SSH_FXF_ACCESS_DISPOSITION = 0x00000007;
-
- /**
- * A new file is created; if the file already exists, the server
- * MUST return status SSH_FX_FILE_ALREADY_EXISTS.
- */
- public static final int SSH_FXF_CREATE_NEW = 0x00000000;
-
- /**
- * A new file is created; if the file already exists, it is opened
- * and truncated.
- */
- public static final int SSH_FXF_CREATE_TRUNCATE = 0x00000001;
-
- /**
- * An existing file is opened. If the file does not exist, the
- * server MUST return SSH_FX_NO_SUCH_FILE. If a directory in the
- * path does not exist, the server SHOULD return
- * SSH_FX_NO_SUCH_PATH. It is also acceptable if the server
- * returns SSH_FX_NO_SUCH_FILE in this case.
- */
- public static final int SSH_FXF_OPEN_EXISTING = 0x00000002;
-
- /**
- * If the file exists, it is opened. If the file does not exist,
- * it is created.
- */
- public static final int SSH_FXF_OPEN_OR_CREATE = 0x00000003;
-
- /**
- * An existing file is opened and truncated. If the file does not
- * exist, the server MUST return the same error codes as defined
- * for SSH_FXF_OPEN_EXISTING.
- */
- public static final int SSH_FXF_TRUNCATE_EXISTING = 0x00000004;
-
- /**
- * Data is always written at the end of the file. The offset field
- * of the SSH_FXP_WRITE requests are ignored.
- * <p>
- * Data is not required to be appended atomically. This means that
- * if multiple writers attempt to append data simultaneously, data
- * from the first may be lost. However, data MAY be appended
- * atomically.
- */
- public static final int SSH_FXF_ACCESS_APPEND_DATA = 0x00000008;
-
- /**
- * Data is always written at the end of the file. The offset field
- * of the SSH_FXP_WRITE requests are ignored.
- * <p>
- * Data MUST be written atomically so that there is no chance that
- * multiple appenders can collide and result in data being lost.
- * <p>
- * If both append flags are specified, the server SHOULD use atomic
- * append if it is available, but SHOULD use non-atomic appends
- * otherwise. The server SHOULD NOT fail the request in this case.
- */
- public static final int SSH_FXF_ACCESS_APPEND_DATA_ATOMIC = 0x00000010;
-
- /**
- * Indicates that the server should treat the file as text and
- * convert it to the canonical newline convention in use.
- * (See Determining Server Newline Convention in section 5.3 in the
- * SFTP standard draft).
- * <p>
- * When a file is opened with this flag, the offset field in the read
- * and write functions is ignored.
- * <p>
- * Servers MUST process multiple, parallel reads and writes correctly
- * in this mode. Naturally, it is permissible for them to do this by
- * serializing the requests.
- * <p>
- * Clients SHOULD use the SSH_FXF_ACCESS_APPEND_DATA flag to append
- * data to a text file rather then using write with a calculated offset.
- */
- public static final int SSH_FXF_ACCESS_TEXT_MODE = 0x00000020;
-
- /**
- * The server MUST guarantee that no other handle has been opened
- * with ACE4_READ_DATA access, and that no other handle will be
- * opened with ACE4_READ_DATA access until the client closes the
- * handle. (This MUST apply both to other clients and to other
- * processes on the server.)
- * <p>
- * If there is a conflicting lock the server MUST return
- * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking
- * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
- * <p>
- * Other handles MAY be opened for ACE4_WRITE_DATA or any other
- * combination of accesses, as long as ACE4_READ_DATA is not included
- * in the mask.
- */
- public static final int SSH_FXF_ACCESS_BLOCK_READ = 0x00000040;
-
- /**
- * The server MUST guarantee that no other handle has been opened
- * with ACE4_WRITE_DATA or ACE4_APPEND_DATA access, and that no other
- * handle will be opened with ACE4_WRITE_DATA or ACE4_APPEND_DATA
- * access until the client closes the handle. (This MUST apply both
- * to other clients and to other processes on the server.)
- * <p>
- * If there is a conflicting lock the server MUST return
- * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking
- * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
- * <p>
- * Other handles MAY be opened for ACE4_READ_DATA or any other
- * combination of accesses, as long as neither ACE4_WRITE_DATA nor
- * ACE4_APPEND_DATA are included in the mask.
- */
- public static final int SSH_FXF_ACCESS_BLOCK_WRITE = 0x00000080;
-
- /**
- * The server MUST guarantee that no other handle has been opened
- * with ACE4_DELETE access, opened with the
- * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that no other handle
- * will be opened with ACE4_DELETE access or with the
- * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that the file itself
- * is not deleted in any other way until the client closes the handle.
- * <p>
- * If there is a conflicting lock the server MUST return
- * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking
- * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
- */
- public static final int SSH_FXF_ACCESS_BLOCK_DELETE = 0x00000100;
-
- /**
- * If this bit is set, the above BLOCK modes are advisory. In advisory
- * mode, only other accesses that specify a BLOCK mode need be
- * considered when determining whether the BLOCK can be granted,
- * and the server need not prevent I/O operations that violate the
- * block mode.
- * <p>
- * The server MAY perform mandatory locking even if the BLOCK_ADVISORY
- * bit is set.
- */
- public static final int SSH_FXF_ACCESS_BLOCK_ADVISORY = 0x00000200;
-
- /**
- * If the final component of the path is a symlink, then the open
- * MUST fail, and the error SSH_FX_LINK_LOOP MUST be returned.
- */
- public static final int SSH_FXF_ACCESS_NOFOLLOW = 0x00000400;
-
- /**
- * The file should be deleted when the last handle to it is closed.
- * (The last handle may not be an sftp-handle.) This MAY be emulated
- * by a server if the OS doesn't support it by deleting the file when
- * this handle is closed.
- * <p>
- * It is implementation specific whether the directory entry is
- * removed immediately or when the handle is closed.
- */
- public static final int SSH_FXF_ACCESS_DELETE_ON_CLOSE = 0x00000800;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * SFTP Open Flags. + * + * The following table is provided to assist in mapping POSIX semantics + * to equivalent SFTP file open parameters: + * <p> + * TODO: This comment should be moved to the open method. + * <p> + * <ul> + * <li>O_RDONLY + * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES</li></ul> + * </li> + * </ul> + * <ul> + * <li>O_WRONLY + * <ul><li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES</li></ul> + * </li> + * </ul> + * <ul> + * <li>O_RDWR + * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES | WRITE_DATA | WRITE_ATTRIBUTES</li></ul> + * </li> + * </ul> + * <ul> + * <li>O_APPEND + * <ul> + * <li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES | APPEND_DATA</li> + * <li>flags = SSH_FXF_ACCESS_APPEND_DATA and or SSH_FXF_ACCESS_APPEND_DATA_ATOMIC</li> + * </ul> + * </li> + * </ul> + * <ul> + * <li>O_CREAT + * <ul> + * <li>flags = SSH_FXF_OPEN_OR_CREATE</li> + * </ul> + * </li> + * </ul> + * <ul> + * <li>O_TRUNC + * <ul> + * <li>flags = SSH_FXF_TRUNCATE_EXISTING</li> + * </ul> + * </li> + * </ul> + * <ul> + * <li>O_TRUNC|O_CREATE + * <ul> + * <li>flags = SSH_FXF_CREATE_TRUNCATE</li> + * </ul> + * </li> + * </ul> + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: OpenFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + */ +public class OpenFlags +{ + /** + * Disposition is a 3 bit field that controls how the file is opened. + * The server MUST support these bits (possible enumaration values: + * SSH_FXF_CREATE_NEW, SSH_FXF_CREATE_TRUNCATE, SSH_FXF_OPEN_EXISTING, + * SSH_FXF_OPEN_OR_CREATE or SSH_FXF_TRUNCATE_EXISTING). + */ + public static final int SSH_FXF_ACCESS_DISPOSITION = 0x00000007; + + /** + * A new file is created; if the file already exists, the server + * MUST return status SSH_FX_FILE_ALREADY_EXISTS. + */ + public static final int SSH_FXF_CREATE_NEW = 0x00000000; + + /** + * A new file is created; if the file already exists, it is opened + * and truncated. + */ + public static final int SSH_FXF_CREATE_TRUNCATE = 0x00000001; + + /** + * An existing file is opened. If the file does not exist, the + * server MUST return SSH_FX_NO_SUCH_FILE. If a directory in the + * path does not exist, the server SHOULD return + * SSH_FX_NO_SUCH_PATH. It is also acceptable if the server + * returns SSH_FX_NO_SUCH_FILE in this case. + */ + public static final int SSH_FXF_OPEN_EXISTING = 0x00000002; + + /** + * If the file exists, it is opened. If the file does not exist, + * it is created. + */ + public static final int SSH_FXF_OPEN_OR_CREATE = 0x00000003; + + /** + * An existing file is opened and truncated. If the file does not + * exist, the server MUST return the same error codes as defined + * for SSH_FXF_OPEN_EXISTING. + */ + public static final int SSH_FXF_TRUNCATE_EXISTING = 0x00000004; + + /** + * Data is always written at the end of the file. The offset field + * of the SSH_FXP_WRITE requests are ignored. + * <p> + * Data is not required to be appended atomically. This means that + * if multiple writers attempt to append data simultaneously, data + * from the first may be lost. However, data MAY be appended + * atomically. + */ + public static final int SSH_FXF_ACCESS_APPEND_DATA = 0x00000008; + + /** + * Data is always written at the end of the file. The offset field + * of the SSH_FXP_WRITE requests are ignored. + * <p> + * Data MUST be written atomically so that there is no chance that + * multiple appenders can collide and result in data being lost. + * <p> + * If both append flags are specified, the server SHOULD use atomic + * append if it is available, but SHOULD use non-atomic appends + * otherwise. The server SHOULD NOT fail the request in this case. + */ + public static final int SSH_FXF_ACCESS_APPEND_DATA_ATOMIC = 0x00000010; + + /** + * Indicates that the server should treat the file as text and + * convert it to the canonical newline convention in use. + * (See Determining Server Newline Convention in section 5.3 in the + * SFTP standard draft). + * <p> + * When a file is opened with this flag, the offset field in the read + * and write functions is ignored. + * <p> + * Servers MUST process multiple, parallel reads and writes correctly + * in this mode. Naturally, it is permissible for them to do this by + * serializing the requests. + * <p> + * Clients SHOULD use the SSH_FXF_ACCESS_APPEND_DATA flag to append + * data to a text file rather then using write with a calculated offset. + */ + public static final int SSH_FXF_ACCESS_TEXT_MODE = 0x00000020; + + /** + * The server MUST guarantee that no other handle has been opened + * with ACE4_READ_DATA access, and that no other handle will be + * opened with ACE4_READ_DATA access until the client closes the + * handle. (This MUST apply both to other clients and to other + * processes on the server.) + * <p> + * If there is a conflicting lock the server MUST return + * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking + * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED. + * <p> + * Other handles MAY be opened for ACE4_WRITE_DATA or any other + * combination of accesses, as long as ACE4_READ_DATA is not included + * in the mask. + */ + public static final int SSH_FXF_ACCESS_BLOCK_READ = 0x00000040; + + /** + * The server MUST guarantee that no other handle has been opened + * with ACE4_WRITE_DATA or ACE4_APPEND_DATA access, and that no other + * handle will be opened with ACE4_WRITE_DATA or ACE4_APPEND_DATA + * access until the client closes the handle. (This MUST apply both + * to other clients and to other processes on the server.) + * <p> + * If there is a conflicting lock the server MUST return + * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking + * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED. + * <p> + * Other handles MAY be opened for ACE4_READ_DATA or any other + * combination of accesses, as long as neither ACE4_WRITE_DATA nor + * ACE4_APPEND_DATA are included in the mask. + */ + public static final int SSH_FXF_ACCESS_BLOCK_WRITE = 0x00000080; + + /** + * The server MUST guarantee that no other handle has been opened + * with ACE4_DELETE access, opened with the + * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that no other handle + * will be opened with ACE4_DELETE access or with the + * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that the file itself + * is not deleted in any other way until the client closes the handle. + * <p> + * If there is a conflicting lock the server MUST return + * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking + * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED. + */ + public static final int SSH_FXF_ACCESS_BLOCK_DELETE = 0x00000100; + + /** + * If this bit is set, the above BLOCK modes are advisory. In advisory + * mode, only other accesses that specify a BLOCK mode need be + * considered when determining whether the BLOCK can be granted, + * and the server need not prevent I/O operations that violate the + * block mode. + * <p> + * The server MAY perform mandatory locking even if the BLOCK_ADVISORY + * bit is set. + */ + public static final int SSH_FXF_ACCESS_BLOCK_ADVISORY = 0x00000200; + + /** + * If the final component of the path is a symlink, then the open + * MUST fail, and the error SSH_FX_LINK_LOOP MUST be returned. + */ + public static final int SSH_FXF_ACCESS_NOFOLLOW = 0x00000400; + + /** + * The file should be deleted when the last handle to it is closed. + * (The last handle may not be an sftp-handle.) This MAY be emulated + * by a server if the OS doesn't support it by deleting the file when + * this handle is closed. + * <p> + * It is implementation specific whether the directory entry is + * removed immediately or when the handle is closed. + */ + public static final int SSH_FXF_ACCESS_DELETE_ON_CLOSE = 0x00000800; +} diff --git a/lib/src/main/java/com/trilead/ssh2/sftp/Packet.java b/lib/src/main/java/com/trilead/ssh2/sftp/Packet.java index 295055c..444af90 100644 --- a/lib/src/main/java/com/trilead/ssh2/sftp/Packet.java +++ b/lib/src/main/java/com/trilead/ssh2/sftp/Packet.java @@ -1,43 +1,43 @@ -
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Paket Types
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Packet.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class Packet
-{
- public static final int SSH_FXP_INIT = 1;
- public static final int SSH_FXP_VERSION = 2;
- public static final int SSH_FXP_OPEN = 3;
- public static final int SSH_FXP_CLOSE = 4;
- public static final int SSH_FXP_READ = 5;
- public static final int SSH_FXP_WRITE = 6;
- public static final int SSH_FXP_LSTAT = 7;
- public static final int SSH_FXP_FSTAT = 8;
- public static final int SSH_FXP_SETSTAT = 9;
- public static final int SSH_FXP_FSETSTAT = 10;
- public static final int SSH_FXP_OPENDIR = 11;
- public static final int SSH_FXP_READDIR = 12;
- public static final int SSH_FXP_REMOVE = 13;
- public static final int SSH_FXP_MKDIR = 14;
- public static final int SSH_FXP_RMDIR = 15;
- public static final int SSH_FXP_REALPATH = 16;
- public static final int SSH_FXP_STAT = 17;
- public static final int SSH_FXP_RENAME = 18;
- public static final int SSH_FXP_READLINK = 19;
- public static final int SSH_FXP_SYMLINK = 20;
-
- public static final int SSH_FXP_STATUS = 101;
- public static final int SSH_FXP_HANDLE = 102;
- public static final int SSH_FXP_DATA = 103;
- public static final int SSH_FXP_NAME = 104;
- public static final int SSH_FXP_ATTRS = 105;
-
- public static final int SSH_FXP_EXTENDED = 200;
- public static final int SSH_FXP_EXTENDED_REPLY = 201;
-}
+ +package com.trilead.ssh2.sftp; + +/** + * + * SFTP Paket Types + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Packet.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $ + * + */ +public class Packet +{ + public static final int SSH_FXP_INIT = 1; + public static final int SSH_FXP_VERSION = 2; + public static final int SSH_FXP_OPEN = 3; + public static final int SSH_FXP_CLOSE = 4; + public static final int SSH_FXP_READ = 5; + public static final int SSH_FXP_WRITE = 6; + public static final int SSH_FXP_LSTAT = 7; + public static final int SSH_FXP_FSTAT = 8; + public static final int SSH_FXP_SETSTAT = 9; + public static final int SSH_FXP_FSETSTAT = 10; + public static final int SSH_FXP_OPENDIR = 11; + public static final int SSH_FXP_READDIR = 12; + public static final int SSH_FXP_REMOVE = 13; + public static final int SSH_FXP_MKDIR = 14; + public static final int SSH_FXP_RMDIR = 15; + public static final int SSH_FXP_REALPATH = 16; + public static final int SSH_FXP_STAT = 17; + public static final int SSH_FXP_RENAME = 18; + public static final int SSH_FXP_READLINK = 19; + public static final int SSH_FXP_SYMLINK = 20; + + public static final int SSH_FXP_STATUS = 101; + public static final int SSH_FXP_HANDLE = 102; + public static final int SSH_FXP_DATA = 103; + public static final int SSH_FXP_NAME = 104; + public static final int SSH_FXP_ATTRS = 105; + + public static final int SSH_FXP_EXTENDED = 200; + public static final int SSH_FXP_EXTENDED_REPLY = 201; +} diff --git a/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java b/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java index 357d66e..6fb6ddb 100644 --- a/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java +++ b/lib/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java @@ -1,255 +1,255 @@ -
-package com.trilead.ssh2.signature;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.interfaces.DSAParams;
-import java.security.interfaces.DSAPrivateKey;
-import java.security.interfaces.DSAPublicKey;
-import java.security.spec.DSAPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-
-
-/**
- * DSASHA1Verify.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DSASHA1Verify.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class DSASHA1Verify
-{
- private static final Logger log = Logger.getLogger(DSASHA1Verify.class);
-
- public static DSAPublicKey decodeSSHDSAPublicKey(byte[] key) throws IOException
- {
- TypesReader tr = new TypesReader(key);
-
- String key_format = tr.readString();
-
- if (key_format.equals("ssh-dss") == false)
- throw new IllegalArgumentException("This is not a ssh-dss public key!");
-
- BigInteger p = tr.readMPINT();
- BigInteger q = tr.readMPINT();
- BigInteger g = tr.readMPINT();
- BigInteger y = tr.readMPINT();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in DSA public key!");
-
- try {
- KeyFactory kf = KeyFactory.getInstance("DSA");
-
- KeySpec ks = new DSAPublicKeySpec(y, p, q, g);
- return (DSAPublicKey) kf.generatePublic(ks);
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (InvalidKeySpecException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- }
- }
-
- public static byte[] encodeSSHDSAPublicKey(DSAPublicKey pk) throws IOException
- {
- TypesWriter tw = new TypesWriter();
-
- tw.writeString("ssh-dss");
-
- DSAParams params = pk.getParams();
- tw.writeMPInt(params.getP());
- tw.writeMPInt(params.getQ());
- tw.writeMPInt(params.getG());
- tw.writeMPInt(pk.getY());
-
- return tw.getBytes();
- }
-
- /**
- * Convert from Java's signature ASN.1 encoding to the SSH spec.
- * <p>
- * Java ASN.1 encoding:
- * <pre>
- * SEQUENCE ::= {
- * r INTEGER,
- * s INTEGER
- * }
- * </pre>
- */
- public static byte[] encodeSSHDSASignature(byte[] ds)
- {
- TypesWriter tw = new TypesWriter();
-
- tw.writeString("ssh-dss");
-
- int len, index;
-
- index = 3;
- len = ds[index++] & 0xff;
- byte[] r = new byte[len];
- System.arraycopy(ds, index, r, 0, r.length);
-
- index = index + len + 1;
- len = ds[index++] & 0xff;
- byte[] s = new byte[len];
- System.arraycopy(ds, index, s, 0, s.length);
-
- byte[] a40 = new byte[40];
- - /* Patch (unsigned) r and s into the target array. */
-
- int r_copylen = (r.length < 20) ? r.length : 20;
- int s_copylen = (s.length < 20) ? s.length : 20;
-
- System.arraycopy(r, r.length - r_copylen, a40, 20 - r_copylen, r_copylen);
- System.arraycopy(s, s.length - s_copylen, a40, 40 - s_copylen, s_copylen);
-
- tw.writeString(a40, 0, 40);
-
- return tw.getBytes();
- }
-
- public static byte[] decodeSSHDSASignature(byte[] sig) throws IOException
- {
- byte[] rsArray = null;
-
- if (sig.length == 40)
- {
- /* OK, another broken SSH server. */
- rsArray = sig;
- }
- else
- {
- /* Hopefully a server obeying the standard... */
- TypesReader tr = new TypesReader(sig);
-
- String sig_format = tr.readString();
- if (sig_format.equals("ssh-dss") == false)
- throw new IOException("Peer sent wrong signature format");
-
- rsArray = tr.readByteString();
-
- if (rsArray.length != 40)
- throw new IOException("Peer sent corrupt signature");
-
- if (tr.remain() != 0)
- throw new IOException("Padding in DSA signature!");
- }
-
- int i = 0;
- int j = 0;
- byte[] tmp;
-
- if (rsArray[0] == 0 && rsArray[1] == 0 && rsArray[2] == 0) {
- j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
- | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
- i += j;
- j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
- | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
- tmp = new byte[j];
- System.arraycopy(rsArray, i, tmp, 0, j);
- rsArray = tmp;
- }
-
- /* ASN.1 */
- int frst = ((rsArray[0] & 0x80) != 0 ? 1 : 0);
- int scnd = ((rsArray[20] & 0x80) != 0 ? 1 : 0);
-
- /* Calculate output length */
- int length = rsArray.length + 6 + frst + scnd;
- tmp = new byte[length];
-
- /* DER-encoding to match Java */
- tmp[0] = (byte) 0x30;
-
- if (rsArray.length != 40)
- throw new IOException("Peer sent corrupt signature");
- /* Calculate length */
- tmp[1] = (byte) 0x2c;
- tmp[1] += frst;
- tmp[1] += scnd;
-
- /* First item */
- tmp[2] = (byte) 0x02;
-
- /* First item length */
- tmp[3] = (byte) 0x14;
- tmp[3] += frst;
-
- /* Copy in the data for first item */
- System.arraycopy(rsArray, 0, tmp, 4 + frst, 20);
-
- /* Second item */
- tmp[4 + tmp[3]] = (byte) 0x02;
-
- /* Second item length */
- tmp[5 + tmp[3]] = (byte) 0x14;
- tmp[5 + tmp[3]] += scnd;
-
- /* Copy in the data for the second item */
- System.arraycopy(rsArray, 20, tmp, 6 + tmp[3] + scnd, 20);
-
- /* Swap buffers */
- rsArray = tmp;
-
- return rsArray;
- }
-
- public static boolean verifySignature(byte[] message, byte[] ds, DSAPublicKey dpk) throws IOException
- {
- try {
- Signature s = Signature.getInstance("SHA1withDSA");
- s.initVerify(dpk);
- s.update(message);
- return s.verify(ds);
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException("No such algorithm");
- ex.initCause(e);
- throw ex;
- } catch (InvalidKeyException e) {
- IOException ex = new IOException("No such algorithm");
- ex.initCause(e);
- throw ex;
- } catch (SignatureException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- }
- }
-
- public static byte[] generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd) throws IOException
- {
- try {
- Signature s = Signature.getInstance("SHA1withDSA");
- s.initSign(pk);
- s.update(message);
- return s.sign();
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (InvalidKeyException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (SignatureException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- }
- }
-}
+ +package com.trilead.ssh2.signature; + +import java.io.IOException; +import java.math.BigInteger; +import java.security.InvalidKeyException; +import java.security.KeyFactory; +import java.security.NoSuchAlgorithmException; +import java.security.SecureRandom; +import java.security.Signature; +import java.security.SignatureException; +import java.security.interfaces.DSAParams; +import java.security.interfaces.DSAPrivateKey; +import java.security.interfaces.DSAPublicKey; +import java.security.spec.DSAPublicKeySpec; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.KeySpec; + +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.TypesReader; +import com.trilead.ssh2.packets.TypesWriter; + + +/** + * DSASHA1Verify. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: DSASHA1Verify.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class DSASHA1Verify +{ + private static final Logger log = Logger.getLogger(DSASHA1Verify.class); + + public static DSAPublicKey decodeSSHDSAPublicKey(byte[] key) throws IOException + { + TypesReader tr = new TypesReader(key); + + String key_format = tr.readString(); + + if (key_format.equals("ssh-dss") == false) + throw new IllegalArgumentException("This is not a ssh-dss public key!"); + + BigInteger p = tr.readMPINT(); + BigInteger q = tr.readMPINT(); + BigInteger g = tr.readMPINT(); + BigInteger y = tr.readMPINT(); + + if (tr.remain() != 0) + throw new IOException("Padding in DSA public key!"); + + try { + KeyFactory kf = KeyFactory.getInstance("DSA"); + + KeySpec ks = new DSAPublicKeySpec(y, p, q, g); + return (DSAPublicKey) kf.generatePublic(ks); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (InvalidKeySpecException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } + } + + public static byte[] encodeSSHDSAPublicKey(DSAPublicKey pk) throws IOException + { + TypesWriter tw = new TypesWriter(); + + tw.writeString("ssh-dss"); + + DSAParams params = pk.getParams(); + tw.writeMPInt(params.getP()); + tw.writeMPInt(params.getQ()); + tw.writeMPInt(params.getG()); + tw.writeMPInt(pk.getY()); + + return tw.getBytes(); + } + + /** + * Convert from Java's signature ASN.1 encoding to the SSH spec. + * <p> + * Java ASN.1 encoding: + * <pre> + * SEQUENCE ::= { + * r INTEGER, + * s INTEGER + * } + * </pre> + */ + public static byte[] encodeSSHDSASignature(byte[] ds) + { + TypesWriter tw = new TypesWriter(); + + tw.writeString("ssh-dss"); + + int len, index; + + index = 3; + len = ds[index++] & 0xff; + byte[] r = new byte[len]; + System.arraycopy(ds, index, r, 0, r.length); + + index = index + len + 1; + len = ds[index++] & 0xff; + byte[] s = new byte[len]; + System.arraycopy(ds, index, s, 0, s.length); + + byte[] a40 = new byte[40]; + + /* Patch (unsigned) r and s into the target array. */ + + int r_copylen = (r.length < 20) ? r.length : 20; + int s_copylen = (s.length < 20) ? s.length : 20; + + System.arraycopy(r, r.length - r_copylen, a40, 20 - r_copylen, r_copylen); + System.arraycopy(s, s.length - s_copylen, a40, 40 - s_copylen, s_copylen); + + tw.writeString(a40, 0, 40); + + return tw.getBytes(); + } + + public static byte[] decodeSSHDSASignature(byte[] sig) throws IOException + { + byte[] rsArray = null; + + if (sig.length == 40) + { + /* OK, another broken SSH server. */ + rsArray = sig; + } + else + { + /* Hopefully a server obeying the standard... */ + TypesReader tr = new TypesReader(sig); + + String sig_format = tr.readString(); + if (sig_format.equals("ssh-dss") == false) + throw new IOException("Peer sent wrong signature format"); + + rsArray = tr.readByteString(); + + if (rsArray.length != 40) + throw new IOException("Peer sent corrupt signature"); + + if (tr.remain() != 0) + throw new IOException("Padding in DSA signature!"); + } + + int i = 0; + int j = 0; + byte[] tmp; + + if (rsArray[0] == 0 && rsArray[1] == 0 && rsArray[2] == 0) { + j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000) + | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff); + i += j; + j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000) + | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff); + tmp = new byte[j]; + System.arraycopy(rsArray, i, tmp, 0, j); + rsArray = tmp; + } + + /* ASN.1 */ + int frst = ((rsArray[0] & 0x80) != 0 ? 1 : 0); + int scnd = ((rsArray[20] & 0x80) != 0 ? 1 : 0); + + /* Calculate output length */ + int length = rsArray.length + 6 + frst + scnd; + tmp = new byte[length]; + + /* DER-encoding to match Java */ + tmp[0] = (byte) 0x30; + + if (rsArray.length != 40) + throw new IOException("Peer sent corrupt signature"); + /* Calculate length */ + tmp[1] = (byte) 0x2c; + tmp[1] += frst; + tmp[1] += scnd; + + /* First item */ + tmp[2] = (byte) 0x02; + + /* First item length */ + tmp[3] = (byte) 0x14; + tmp[3] += frst; + + /* Copy in the data for first item */ + System.arraycopy(rsArray, 0, tmp, 4 + frst, 20); + + /* Second item */ + tmp[4 + tmp[3]] = (byte) 0x02; + + /* Second item length */ + tmp[5 + tmp[3]] = (byte) 0x14; + tmp[5 + tmp[3]] += scnd; + + /* Copy in the data for the second item */ + System.arraycopy(rsArray, 20, tmp, 6 + tmp[3] + scnd, 20); + + /* Swap buffers */ + rsArray = tmp; + + return rsArray; + } + + public static boolean verifySignature(byte[] message, byte[] ds, DSAPublicKey dpk) throws IOException + { + try { + Signature s = Signature.getInstance("SHA1withDSA"); + s.initVerify(dpk); + s.update(message); + return s.verify(ds); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException("No such algorithm"); + ex.initCause(e); + throw ex; + } catch (InvalidKeyException e) { + IOException ex = new IOException("No such algorithm"); + ex.initCause(e); + throw ex; + } catch (SignatureException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } + } + + public static byte[] generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd) throws IOException + { + try { + Signature s = Signature.getInstance("SHA1withDSA"); + s.initSign(pk); + s.update(message); + return s.sign(); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (InvalidKeyException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (SignatureException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java b/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java index 9b5c18e..3406312 100644 --- a/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java +++ b/lib/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java @@ -1,180 +1,180 @@ -
-package com.trilead.ssh2.signature;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.interfaces.RSAPrivateKey;
-import java.security.interfaces.RSAPublicKey;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-import java.security.spec.RSAPublicKeySpec;
-
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-
-
-/**
- * RSASHA1Verify.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RSASHA1Verify.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class RSASHA1Verify
-{
- private static final Logger log = Logger.getLogger(RSASHA1Verify.class);
-
- public static RSAPublicKey decodeSSHRSAPublicKey(byte[] key) throws IOException
- {
- TypesReader tr = new TypesReader(key);
-
- String key_format = tr.readString();
-
- if (key_format.equals("ssh-rsa") == false)
- throw new IllegalArgumentException("This is not a ssh-rsa public key");
-
- BigInteger e = tr.readMPINT();
- BigInteger n = tr.readMPINT();
-
- if (tr.remain() != 0)
- throw new IOException("Padding in RSA public key!");
-
- KeySpec keySpec = new RSAPublicKeySpec(n, e);
-
- try {
- KeyFactory kf = KeyFactory.getInstance("RSA");
- return (RSAPublicKey) kf.generatePublic(keySpec);
- } catch (NoSuchAlgorithmException nsae) {
- IOException ioe = new IOException("No RSA KeyFactory available");
- ioe.initCause(nsae);
- throw ioe;
- } catch (InvalidKeySpecException ikse) {
- IOException ioe = new IOException("No RSA KeyFactory available");
- ioe.initCause(ikse);
- throw ioe;
- }
- }
-
- public static byte[] encodeSSHRSAPublicKey(RSAPublicKey pk) throws IOException
- {
- TypesWriter tw = new TypesWriter();
-
- tw.writeString("ssh-rsa");
- tw.writeMPInt(pk.getPublicExponent());
- tw.writeMPInt(pk.getModulus());
-
- return tw.getBytes();
- }
-
- public static byte[] decodeSSHRSASignature(byte[] sig) throws IOException
- {
- TypesReader tr = new TypesReader(sig);
-
- String sig_format = tr.readString();
-
- if (sig_format.equals("ssh-rsa") == false)
- throw new IOException("Peer sent wrong signature format");
-
- /* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string
- * containing s (which is an integer, without lengths or padding, unsigned and in
- * network byte order)." See also below.
- */
-
- byte[] s = tr.readByteString();
-
- if (s.length == 0)
- throw new IOException("Error in RSA signature, S is empty.");
-
- if (log.isEnabled())
- {
- log.log(80, "Decoding ssh-rsa signature string (length: " + s.length + ")");
- }
-
- if (tr.remain() != 0)
- throw new IOException("Padding in RSA signature!");
-
- if (s[0] == 0 && s[1] == 0 && s[2] == 0) {
- int i = 0;
- int j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
- | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
- i += j;
- j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
- | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
- byte[] tmp = new byte[j];
- System.arraycopy(s, i, tmp, 0, j);
- sig = tmp;
- }
-
- return s;
- }
-
- public static byte[] encodeSSHRSASignature(byte[] s) throws IOException
- {
- TypesWriter tw = new TypesWriter();
-
- tw.writeString("ssh-rsa");
-
- /* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string
- * containing s (which is an integer, without lengths or padding, unsigned and in
- * network byte order)."
- */
-
- /* Remove first zero sign byte, if present */
-
- if ((s.length > 1) && (s[0] == 0x00))
- tw.writeString(s, 1, s.length - 1);
- else
- tw.writeString(s, 0, s.length);
-
- return tw.getBytes();
- }
-
- public static byte[] generateSignature(byte[] message, RSAPrivateKey pk) throws IOException
- {
- try {
- Signature s = Signature.getInstance("SHA1withRSA");
- s.initSign(pk);
- s.update(message);
- return s.sign();
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (InvalidKeyException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (SignatureException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- }
- }
-
- public static boolean verifySignature(byte[] message, byte[] ds, RSAPublicKey dpk) throws IOException
- {
- try {
- Signature s = Signature.getInstance("SHA1withRSA");
- s.initVerify(dpk);
- s.update(message);
- return s.verify(ds);
- } catch (NoSuchAlgorithmException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (InvalidKeyException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- } catch (SignatureException e) {
- IOException ex = new IOException();
- ex.initCause(e);
- throw ex;
- }
- }
-}
+ +package com.trilead.ssh2.signature; + +import java.io.IOException; +import java.math.BigInteger; +import java.security.InvalidKeyException; +import java.security.KeyFactory; +import java.security.NoSuchAlgorithmException; +import java.security.Signature; +import java.security.SignatureException; +import java.security.interfaces.RSAPrivateKey; +import java.security.interfaces.RSAPublicKey; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.KeySpec; +import java.security.spec.RSAPublicKeySpec; + +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.TypesReader; +import com.trilead.ssh2.packets.TypesWriter; + + +/** + * RSASHA1Verify. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: RSASHA1Verify.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class RSASHA1Verify +{ + private static final Logger log = Logger.getLogger(RSASHA1Verify.class); + + public static RSAPublicKey decodeSSHRSAPublicKey(byte[] key) throws IOException + { + TypesReader tr = new TypesReader(key); + + String key_format = tr.readString(); + + if (key_format.equals("ssh-rsa") == false) + throw new IllegalArgumentException("This is not a ssh-rsa public key"); + + BigInteger e = tr.readMPINT(); + BigInteger n = tr.readMPINT(); + + if (tr.remain() != 0) + throw new IOException("Padding in RSA public key!"); + + KeySpec keySpec = new RSAPublicKeySpec(n, e); + + try { + KeyFactory kf = KeyFactory.getInstance("RSA"); + return (RSAPublicKey) kf.generatePublic(keySpec); + } catch (NoSuchAlgorithmException nsae) { + IOException ioe = new IOException("No RSA KeyFactory available"); + ioe.initCause(nsae); + throw ioe; + } catch (InvalidKeySpecException ikse) { + IOException ioe = new IOException("No RSA KeyFactory available"); + ioe.initCause(ikse); + throw ioe; + } + } + + public static byte[] encodeSSHRSAPublicKey(RSAPublicKey pk) throws IOException + { + TypesWriter tw = new TypesWriter(); + + tw.writeString("ssh-rsa"); + tw.writeMPInt(pk.getPublicExponent()); + tw.writeMPInt(pk.getModulus()); + + return tw.getBytes(); + } + + public static byte[] decodeSSHRSASignature(byte[] sig) throws IOException + { + TypesReader tr = new TypesReader(sig); + + String sig_format = tr.readString(); + + if (sig_format.equals("ssh-rsa") == false) + throw new IOException("Peer sent wrong signature format"); + + /* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string + * containing s (which is an integer, without lengths or padding, unsigned and in + * network byte order)." See also below. + */ + + byte[] s = tr.readByteString(); + + if (s.length == 0) + throw new IOException("Error in RSA signature, S is empty."); + + if (log.isEnabled()) + { + log.log(80, "Decoding ssh-rsa signature string (length: " + s.length + ")"); + } + + if (tr.remain() != 0) + throw new IOException("Padding in RSA signature!"); + + if (s[0] == 0 && s[1] == 0 && s[2] == 0) { + int i = 0; + int j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000) + | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff); + i += j; + j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000) + | ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff); + byte[] tmp = new byte[j]; + System.arraycopy(s, i, tmp, 0, j); + sig = tmp; + } + + return s; + } + + public static byte[] encodeSSHRSASignature(byte[] s) throws IOException + { + TypesWriter tw = new TypesWriter(); + + tw.writeString("ssh-rsa"); + + /* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string + * containing s (which is an integer, without lengths or padding, unsigned and in + * network byte order)." + */ + + /* Remove first zero sign byte, if present */ + + if ((s.length > 1) && (s[0] == 0x00)) + tw.writeString(s, 1, s.length - 1); + else + tw.writeString(s, 0, s.length); + + return tw.getBytes(); + } + + public static byte[] generateSignature(byte[] message, RSAPrivateKey pk) throws IOException + { + try { + Signature s = Signature.getInstance("SHA1withRSA"); + s.initSign(pk); + s.update(message); + return s.sign(); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (InvalidKeyException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (SignatureException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } + } + + public static boolean verifySignature(byte[] message, byte[] ds, RSAPublicKey dpk) throws IOException + { + try { + Signature s = Signature.getInstance("SHA1withRSA"); + s.initVerify(dpk); + s.update(message); + return s.verify(ds); + } catch (NoSuchAlgorithmException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (InvalidKeyException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } catch (SignatureException e) { + IOException ex = new IOException(); + ex.initCause(e); + throw ex; + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java b/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java index 23726f3..d7a5ee5 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java @@ -1,125 +1,125 @@ -
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.UnsupportedEncodingException;
-
-import com.trilead.ssh2.Connection;
-
-/**
- * ClientServerHello.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class ClientServerHello
-{
- String server_line;
- String client_line;
-
- String server_versioncomment;
-
- public final static int readLineRN(InputStream is, byte[] buffer) throws IOException
- {
- int pos = 0;
- boolean need10 = false;
- int len = 0;
- while (true)
- {
- int c = is.read();
- if (c == -1)
- throw new IOException("Premature connection close");
-
- buffer[pos++] = (byte) c;
-
- if (c == 13)
- {
- need10 = true;
- continue;
- }
-
- if (c == 10)
- break;
-
- if (need10 == true)
- throw new IOException("Malformed line sent by the server, the line does not end correctly.");
-
- len++;
- if (pos >= buffer.length)
- throw new IOException("The server sent a too long line.");
- }
-
- return len;
- }
-
- public ClientServerHello(InputStream bi, OutputStream bo) throws IOException
- {
- client_line = "SSH-2.0-" + Connection.identification;
-
- bo.write((client_line + "\r\n").getBytes("ISO-8859-1"));
- bo.flush();
-
- byte[] serverVersion = new byte[512];
-
- for (int i = 0; i < 50; i++)
- {
- int len = readLineRN(bi, serverVersion);
-
- server_line = new String(serverVersion, 0, len, "ISO-8859-1");
-
- if (server_line.startsWith("SSH-"))
- break;
- }
-
- if (server_line.startsWith("SSH-") == false)
- throw new IOException(
- "Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines.");
-
- if (server_line.startsWith("SSH-1.99-"))
- server_versioncomment = server_line.substring(9);
- else if (server_line.startsWith("SSH-2.0-"))
- server_versioncomment = server_line.substring(8);
- else
- throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible.");
- }
-
- /**
- * @return Returns the client_versioncomment.
- */
- public byte[] getClientString()
- {
- byte[] result;
-
- try
- {
- result = client_line.getBytes("ISO-8859-1");
- }
- catch (UnsupportedEncodingException ign)
- {
- result = client_line.getBytes();
- }
-
- return result;
- }
-
- /**
- * @return Returns the server_versioncomment.
- */
- public byte[] getServerString()
- {
- byte[] result;
-
- try
- {
- result = server_line.getBytes("ISO-8859-1");
- }
- catch (UnsupportedEncodingException ign)
- {
- result = server_line.getBytes();
- }
-
- return result;
- }
-}
+ +package com.trilead.ssh2.transport; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; + +import com.trilead.ssh2.Connection; + +/** + * ClientServerHello. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class ClientServerHello +{ + String server_line; + String client_line; + + String server_versioncomment; + + public final static int readLineRN(InputStream is, byte[] buffer) throws IOException + { + int pos = 0; + boolean need10 = false; + int len = 0; + while (true) + { + int c = is.read(); + if (c == -1) + throw new IOException("Premature connection close"); + + buffer[pos++] = (byte) c; + + if (c == 13) + { + need10 = true; + continue; + } + + if (c == 10) + break; + + if (need10 == true) + throw new IOException("Malformed line sent by the server, the line does not end correctly."); + + len++; + if (pos >= buffer.length) + throw new IOException("The server sent a too long line."); + } + + return len; + } + + public ClientServerHello(InputStream bi, OutputStream bo) throws IOException + { + client_line = "SSH-2.0-" + Connection.identification; + + bo.write((client_line + "\r\n").getBytes("ISO-8859-1")); + bo.flush(); + + byte[] serverVersion = new byte[512]; + + for (int i = 0; i < 50; i++) + { + int len = readLineRN(bi, serverVersion); + + server_line = new String(serverVersion, 0, len, "ISO-8859-1"); + + if (server_line.startsWith("SSH-")) + break; + } + + if (server_line.startsWith("SSH-") == false) + throw new IOException( + "Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines."); + + if (server_line.startsWith("SSH-1.99-")) + server_versioncomment = server_line.substring(9); + else if (server_line.startsWith("SSH-2.0-")) + server_versioncomment = server_line.substring(8); + else + throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible."); + } + + /** + * @return Returns the client_versioncomment. + */ + public byte[] getClientString() + { + byte[] result; + + try + { + result = client_line.getBytes("ISO-8859-1"); + } + catch (UnsupportedEncodingException ign) + { + result = client_line.getBytes(); + } + + return result; + } + + /** + * @return Returns the server_versioncomment. + */ + public byte[] getServerString() + { + byte[] result; + + try + { + result = server_line.getBytes("ISO-8859-1"); + } + catch (UnsupportedEncodingException ign) + { + result = server_line.getBytes(); + } + + return result; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/KexManager.java b/lib/src/main/java/com/trilead/ssh2/transport/KexManager.java index 6e0d904..230047e 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/KexManager.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/KexManager.java @@ -1,664 +1,664 @@ -
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.Set;
-import java.util.TreeSet;
-
-import com.trilead.ssh2.ConnectionInfo;
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.ServerHostKeyVerifier;
-import com.trilead.ssh2.compression.CompressionFactory;
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.KeyMaterial;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.dh.DhGroupExchange;
+ +package com.trilead.ssh2.transport; + +import java.io.IOException; +import java.security.SecureRandom; +import java.security.interfaces.DSAPublicKey; +import java.security.interfaces.ECPublicKey; +import java.security.interfaces.RSAPublicKey; +import java.util.Set; +import java.util.TreeSet; + +import com.trilead.ssh2.ConnectionInfo; +import com.trilead.ssh2.DHGexParameters; +import com.trilead.ssh2.ServerHostKeyVerifier; +import com.trilead.ssh2.compression.CompressionFactory; +import com.trilead.ssh2.compression.ICompressor; +import com.trilead.ssh2.crypto.CryptoWishList; +import com.trilead.ssh2.crypto.KeyMaterial; +import com.trilead.ssh2.crypto.cipher.BlockCipher; +import com.trilead.ssh2.crypto.cipher.BlockCipherFactory; +import com.trilead.ssh2.crypto.dh.DhGroupExchange; import com.trilead.ssh2.crypto.dh.GenericDhExchange; -import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketKexDHInit;
-import com.trilead.ssh2.packets.PacketKexDHReply;
-import com.trilead.ssh2.packets.PacketKexDhGexGroup;
-import com.trilead.ssh2.packets.PacketKexDhGexInit;
-import com.trilead.ssh2.packets.PacketKexDhGexReply;
-import com.trilead.ssh2.packets.PacketKexDhGexRequest;
-import com.trilead.ssh2.packets.PacketKexDhGexRequestOld;
-import com.trilead.ssh2.packets.PacketKexInit;
-import com.trilead.ssh2.packets.PacketNewKeys;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-
-
-/**
- * KexManager.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexManager.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KexManager
-{
- private static final Logger log = Logger.getLogger(KexManager.class);
-
- private static final Set<String> HOSTKEY_ALGS = new TreeSet<String>();
- static {
- HOSTKEY_ALGS.add("ecdsa-sha2-nistp256");
- HOSTKEY_ALGS.add("ecdsa-sha2-nistp384");
- HOSTKEY_ALGS.add("ecdsa-sha2-nistp521");
- HOSTKEY_ALGS.add("ssh-rsa");
- HOSTKEY_ALGS.add("ssh-dsa");
- }
-
- private static final Set<String> KEX_ALGS = new TreeSet<String>();
- static {
+import com.trilead.ssh2.crypto.digest.MAC; +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.PacketKexDHInit; +import com.trilead.ssh2.packets.PacketKexDHReply; +import com.trilead.ssh2.packets.PacketKexDhGexGroup; +import com.trilead.ssh2.packets.PacketKexDhGexInit; +import com.trilead.ssh2.packets.PacketKexDhGexReply; +import com.trilead.ssh2.packets.PacketKexDhGexRequest; +import com.trilead.ssh2.packets.PacketKexDhGexRequestOld; +import com.trilead.ssh2.packets.PacketKexInit; +import com.trilead.ssh2.packets.PacketNewKeys; +import com.trilead.ssh2.packets.Packets; +import com.trilead.ssh2.signature.DSASHA1Verify; +import com.trilead.ssh2.signature.ECDSASHA2Verify; +import com.trilead.ssh2.signature.RSASHA1Verify; + + +/** + * KexManager. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: KexManager.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class KexManager +{ + private static final Logger log = Logger.getLogger(KexManager.class); + + private static final Set<String> HOSTKEY_ALGS = new TreeSet<String>(); + static { + HOSTKEY_ALGS.add("ecdsa-sha2-nistp256"); + HOSTKEY_ALGS.add("ecdsa-sha2-nistp384"); + HOSTKEY_ALGS.add("ecdsa-sha2-nistp521"); + HOSTKEY_ALGS.add("ssh-rsa"); + HOSTKEY_ALGS.add("ssh-dsa"); + } + + private static final Set<String> KEX_ALGS = new TreeSet<String>(); + static { KEX_ALGS.add("ecdh-sha2-nistp256"); KEX_ALGS.add("ecdh-sha2-nistp384"); KEX_ALGS.add("ecdh-sha2-nistp521"); - KEX_ALGS.add("diffie-hellman-group-exchange-sha1");
- KEX_ALGS.add("diffie-hellman-group14-sha1");
- KEX_ALGS.add("diffie-hellman-group1-sha1");
- }
-
- KexState kxs;
- int kexCount = 0;
- KeyMaterial km;
- byte[] sessionId;
- ClientServerHello csh;
-
- final Object accessLock = new Object();
- ConnectionInfo lastConnInfo = null;
-
- boolean connectionClosed = false;
-
- boolean ignore_next_kex_packet = false;
-
- final TransportManager tm;
-
- CryptoWishList nextKEXcryptoWishList;
- DHGexParameters nextKEXdhgexParameters;
-
- ServerHostKeyVerifier verifier;
- final String hostname;
- final int port;
- final SecureRandom rnd;
-
- public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, String hostname, int port,
- ServerHostKeyVerifier keyVerifier, SecureRandom rnd)
- {
- this.tm = tm;
- this.csh = csh;
- this.nextKEXcryptoWishList = initialCwl;
- this.nextKEXdhgexParameters = new DHGexParameters();
- this.hostname = hostname;
- this.port = port;
- this.verifier = keyVerifier;
- this.rnd = rnd;
- }
-
- public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException
- {
- synchronized (accessLock)
- {
- while (true)
- {
- if ((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount))
- return lastConnInfo;
-
- if (connectionClosed)
- throw (IOException) new IOException("Key exchange was not finished, connection is closed.")
- .initCause(tm.getReasonClosedCause());
-
- try
- {
- accessLock.wait();
- }
- catch (InterruptedException e)
- {
- }
- }
- }
- }
-
- private String getFirstMatch(String[] client, String[] server) throws NegotiateException
- {
- if (client == null || server == null)
- throw new IllegalArgumentException();
-
- if (client.length == 0)
- return null;
-
- for (int i = 0; i < client.length; i++)
- {
- for (int j = 0; j < server.length; j++)
- {
- if (client[i].equals(server[j]))
- return client[i];
- }
- }
- throw new NegotiateException();
- }
-
- private boolean compareFirstOfNameList(String[] a, String[] b)
- {
- if (a == null || b == null)
- throw new IllegalArgumentException();
-
- if ((a.length == 0) && (b.length == 0))
- return true;
-
- if ((a.length == 0) || (b.length == 0))
- return false;
-
- return (a[0].equals(b[0]));
- }
-
- private boolean isGuessOK(KexParameters cpar, KexParameters spar)
- {
- if (cpar == null || spar == null)
- throw new IllegalArgumentException();
-
- if (compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms) == false)
- {
- return false;
- }
-
- if (compareFirstOfNameList(cpar.server_host_key_algorithms, spar.server_host_key_algorithms) == false)
- {
- return false;
- }
-
- /*
- * We do NOT check here if the other algorithms can be agreed on, this
- * is just a check if kex_algorithms and server_host_key_algorithms were
- * guessed right!
- */
-
- return true;
- }
-
- private NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
- {
- NegotiatedParameters np = new NegotiatedParameters();
-
- try
- {
- np.kex_algo = getFirstMatch(client.kex_algorithms, server.kex_algorithms);
-
- log.log(20, "kex_algo=" + np.kex_algo);
-
- np.server_host_key_algo = getFirstMatch(client.server_host_key_algorithms,
- server.server_host_key_algorithms);
-
- log.log(20, "server_host_key_algo=" + np.server_host_key_algo);
-
- np.enc_algo_client_to_server = getFirstMatch(client.encryption_algorithms_client_to_server,
- server.encryption_algorithms_client_to_server);
- np.enc_algo_server_to_client = getFirstMatch(client.encryption_algorithms_server_to_client,
- server.encryption_algorithms_server_to_client);
-
- log.log(20, "enc_algo_client_to_server=" + np.enc_algo_client_to_server);
- log.log(20, "enc_algo_server_to_client=" + np.enc_algo_server_to_client);
-
- np.mac_algo_client_to_server = getFirstMatch(client.mac_algorithms_client_to_server,
- server.mac_algorithms_client_to_server);
- np.mac_algo_server_to_client = getFirstMatch(client.mac_algorithms_server_to_client,
- server.mac_algorithms_server_to_client);
-
- log.log(20, "mac_algo_client_to_server=" + np.mac_algo_client_to_server);
- log.log(20, "mac_algo_server_to_client=" + np.mac_algo_server_to_client);
-
- np.comp_algo_client_to_server = getFirstMatch(client.compression_algorithms_client_to_server,
- server.compression_algorithms_client_to_server);
- np.comp_algo_server_to_client = getFirstMatch(client.compression_algorithms_server_to_client,
- server.compression_algorithms_server_to_client);
-
- log.log(20, "comp_algo_client_to_server=" + np.comp_algo_client_to_server);
- log.log(20, "comp_algo_server_to_client=" + np.comp_algo_server_to_client);
-
- }
- catch (NegotiateException e)
- {
- return null;
- }
-
- try
- {
- np.lang_client_to_server = getFirstMatch(client.languages_client_to_server,
- server.languages_client_to_server);
- }
- catch (NegotiateException e1)
- {
- np.lang_client_to_server = null;
- }
-
- try
- {
- np.lang_server_to_client = getFirstMatch(client.languages_server_to_client,
- server.languages_server_to_client);
- }
- catch (NegotiateException e2)
- {
- np.lang_server_to_client = null;
- }
-
- if (isGuessOK(client, server))
- np.guessOK = true;
-
- return np;
- }
-
- public synchronized void initiateKEX(CryptoWishList cwl, DHGexParameters dhgex) throws IOException
- {
- nextKEXcryptoWishList = cwl;
- nextKEXdhgexParameters = dhgex;
-
- if (kxs == null)
- {
- kxs = new KexState();
-
- kxs.dhgexParameters = nextKEXdhgexParameters;
+ KEX_ALGS.add("diffie-hellman-group-exchange-sha1"); + KEX_ALGS.add("diffie-hellman-group14-sha1"); + KEX_ALGS.add("diffie-hellman-group1-sha1"); + } + + KexState kxs; + int kexCount = 0; + KeyMaterial km; + byte[] sessionId; + ClientServerHello csh; + + final Object accessLock = new Object(); + ConnectionInfo lastConnInfo = null; + + boolean connectionClosed = false; + + boolean ignore_next_kex_packet = false; + + final TransportManager tm; + + CryptoWishList nextKEXcryptoWishList; + DHGexParameters nextKEXdhgexParameters; + + ServerHostKeyVerifier verifier; + final String hostname; + final int port; + final SecureRandom rnd; + + public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, String hostname, int port, + ServerHostKeyVerifier keyVerifier, SecureRandom rnd) + { + this.tm = tm; + this.csh = csh; + this.nextKEXcryptoWishList = initialCwl; + this.nextKEXdhgexParameters = new DHGexParameters(); + this.hostname = hostname; + this.port = port; + this.verifier = keyVerifier; + this.rnd = rnd; + } + + public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException + { + synchronized (accessLock) + { + while (true) + { + if ((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount)) + return lastConnInfo; + + if (connectionClosed) + throw (IOException) new IOException("Key exchange was not finished, connection is closed.") + .initCause(tm.getReasonClosedCause()); + + try + { + accessLock.wait(); + } + catch (InterruptedException e) + { + } + } + } + } + + private String getFirstMatch(String[] client, String[] server) throws NegotiateException + { + if (client == null || server == null) + throw new IllegalArgumentException(); + + if (client.length == 0) + return null; + + for (int i = 0; i < client.length; i++) + { + for (int j = 0; j < server.length; j++) + { + if (client[i].equals(server[j])) + return client[i]; + } + } + throw new NegotiateException(); + } + + private boolean compareFirstOfNameList(String[] a, String[] b) + { + if (a == null || b == null) + throw new IllegalArgumentException(); + + if ((a.length == 0) && (b.length == 0)) + return true; + + if ((a.length == 0) || (b.length == 0)) + return false; + + return (a[0].equals(b[0])); + } + + private boolean isGuessOK(KexParameters cpar, KexParameters spar) + { + if (cpar == null || spar == null) + throw new IllegalArgumentException(); + + if (compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms) == false) + { + return false; + } + + if (compareFirstOfNameList(cpar.server_host_key_algorithms, spar.server_host_key_algorithms) == false) + { + return false; + } + + /* + * We do NOT check here if the other algorithms can be agreed on, this + * is just a check if kex_algorithms and server_host_key_algorithms were + * guessed right! + */ + + return true; + } + + private NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server) + { + NegotiatedParameters np = new NegotiatedParameters(); + + try + { + np.kex_algo = getFirstMatch(client.kex_algorithms, server.kex_algorithms); + + log.log(20, "kex_algo=" + np.kex_algo); + + np.server_host_key_algo = getFirstMatch(client.server_host_key_algorithms, + server.server_host_key_algorithms); + + log.log(20, "server_host_key_algo=" + np.server_host_key_algo); + + np.enc_algo_client_to_server = getFirstMatch(client.encryption_algorithms_client_to_server, + server.encryption_algorithms_client_to_server); + np.enc_algo_server_to_client = getFirstMatch(client.encryption_algorithms_server_to_client, + server.encryption_algorithms_server_to_client); + + log.log(20, "enc_algo_client_to_server=" + np.enc_algo_client_to_server); + log.log(20, "enc_algo_server_to_client=" + np.enc_algo_server_to_client); + + np.mac_algo_client_to_server = getFirstMatch(client.mac_algorithms_client_to_server, + server.mac_algorithms_client_to_server); + np.mac_algo_server_to_client = getFirstMatch(client.mac_algorithms_server_to_client, + server.mac_algorithms_server_to_client); + + log.log(20, "mac_algo_client_to_server=" + np.mac_algo_client_to_server); + log.log(20, "mac_algo_server_to_client=" + np.mac_algo_server_to_client); + + np.comp_algo_client_to_server = getFirstMatch(client.compression_algorithms_client_to_server, + server.compression_algorithms_client_to_server); + np.comp_algo_server_to_client = getFirstMatch(client.compression_algorithms_server_to_client, + server.compression_algorithms_server_to_client); + + log.log(20, "comp_algo_client_to_server=" + np.comp_algo_client_to_server); + log.log(20, "comp_algo_server_to_client=" + np.comp_algo_server_to_client); + + } + catch (NegotiateException e) + { + return null; + } + + try + { + np.lang_client_to_server = getFirstMatch(client.languages_client_to_server, + server.languages_client_to_server); + } + catch (NegotiateException e1) + { + np.lang_client_to_server = null; + } + + try + { + np.lang_server_to_client = getFirstMatch(client.languages_server_to_client, + server.languages_server_to_client); + } + catch (NegotiateException e2) + { + np.lang_server_to_client = null; + } + + if (isGuessOK(client, server)) + np.guessOK = true; + + return np; + } + + public synchronized void initiateKEX(CryptoWishList cwl, DHGexParameters dhgex) throws IOException + { + nextKEXcryptoWishList = cwl; + nextKEXdhgexParameters = dhgex; + + if (kxs == null) + { + kxs = new KexState(); + + kxs.dhgexParameters = nextKEXdhgexParameters; PacketKexInit kp = new PacketKexInit(nextKEXcryptoWishList); - kxs.localKEX = kp;
- tm.sendKexMessage(kp.getPayload());
- }
- }
-
- private boolean establishKeyMaterial()
- {
- try
- {
- int mac_cs_key_len = MAC.getKeyLen(kxs.np.mac_algo_client_to_server);
- int enc_cs_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_client_to_server);
- int enc_cs_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_client_to_server);
-
- int mac_sc_key_len = MAC.getKeyLen(kxs.np.mac_algo_server_to_client);
- int enc_sc_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_server_to_client);
- int enc_sc_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_server_to_client);
-
+ kxs.localKEX = kp; + tm.sendKexMessage(kp.getPayload()); + } + } + + private boolean establishKeyMaterial() + { + try + { + int mac_cs_key_len = MAC.getKeyLen(kxs.np.mac_algo_client_to_server); + int enc_cs_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_client_to_server); + int enc_cs_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_client_to_server); + + int mac_sc_key_len = MAC.getKeyLen(kxs.np.mac_algo_server_to_client); + int enc_sc_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_server_to_client); + int enc_sc_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_server_to_client); + km = KeyMaterial.create(kxs.hashAlgo, kxs.H, kxs.K, sessionId, enc_cs_key_len, enc_cs_block_len, mac_cs_key_len, - enc_sc_key_len, enc_sc_block_len, mac_sc_key_len);
- }
- catch (IllegalArgumentException e)
- {
- return false;
- }
- return true;
- }
-
- private void finishKex() throws IOException
- {
- if (sessionId == null)
- sessionId = kxs.H;
-
- establishKeyMaterial();
-
- /* Tell the other side that we start using the new material */
-
- PacketNewKeys ign = new PacketNewKeys();
- tm.sendKexMessage(ign.getPayload());
-
- BlockCipher cbc;
- MAC mac;
- ICompressor comp;
-
- try
- {
- cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_client_to_server, true, km.enc_key_client_to_server,
- km.initial_iv_client_to_server);
-
- mac = new MAC(kxs.np.mac_algo_client_to_server, km.integrity_key_client_to_server);
-
- comp = CompressionFactory.createCompressor(kxs.np.comp_algo_client_to_server);
-
- }
- catch (IllegalArgumentException e1)
- {
- throw new IOException("Fatal error during MAC startup!");
- }
-
- tm.changeSendCipher(cbc, mac);
- tm.changeSendCompression(comp);
- tm.kexFinished();
- }
-
- public static final String[] getDefaultServerHostkeyAlgorithmList()
- {
- return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]);
- }
-
- public static final void checkServerHostkeyAlgorithmsList(String[] algos)
- {
- for (int i = 0; i < algos.length; i++)
- {
- if (!HOSTKEY_ALGS.contains(algos[i]))
- throw new IllegalArgumentException("Unknown server host key algorithm '" + algos[i] + "'");
- }
- }
-
- public static final String[] getDefaultKexAlgorithmList()
- {
- return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
- }
-
- public static final void checkKexAlgorithmList(String[] algos)
- {
- for (int i = 0; i < algos.length; i++)
- {
- if (!KEX_ALGS.contains(algos[i]))
- throw new IllegalArgumentException("Unknown kex algorithm '" + algos[i] + "'");
- }
- }
-
- private boolean verifySignature(byte[] sig, byte[] hostkey) throws IOException
- {
- if (kxs.np.server_host_key_algo.startsWith("ecdsa-sha2-"))
- {
- byte[] rs = ECDSASHA2Verify.decodeSSHECDSASignature(sig);
- ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(hostkey);
-
- log.log(50, "Verifying ecdsa signature");
-
- return ECDSASHA2Verify.verifySignature(kxs.H, rs, epk);
- }
-
- if (kxs.np.server_host_key_algo.equals("ssh-rsa"))
- {
- byte[] rs = RSASHA1Verify.decodeSSHRSASignature(sig);
- RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(hostkey);
-
- log.log(50, "Verifying ssh-rsa signature");
-
- return RSASHA1Verify.verifySignature(kxs.H, rs, rpk);
- }
-
- if (kxs.np.server_host_key_algo.equals("ssh-dss"))
- {
- byte[] ds = DSASHA1Verify.decodeSSHDSASignature(sig);
- DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(hostkey);
-
- log.log(50, "Verifying ssh-dss signature");
-
- return DSASHA1Verify.verifySignature(kxs.H, ds, dpk);
- }
-
- throw new IOException("Unknown server host key algorithm '" + kxs.np.server_host_key_algo + "'");
- }
-
- public synchronized void handleMessage(byte[] msg, int msglen) throws IOException
- {
- PacketKexInit kip;
-
- if (msg == null)
- {
- synchronized (accessLock)
- {
- connectionClosed = true;
- accessLock.notifyAll();
- return;
- }
- }
-
- if ((kxs == null) && (msg[0] != Packets.SSH_MSG_KEXINIT))
- throw new IOException("Unexpected KEX message (type " + msg[0] + ")");
-
- if (ignore_next_kex_packet)
- {
- ignore_next_kex_packet = false;
- return;
- }
-
- if (msg[0] == Packets.SSH_MSG_KEXINIT)
- {
- if ((kxs != null) && (kxs.state != 0))
- throw new IOException("Unexpected SSH_MSG_KEXINIT message during on-going kex exchange!");
-
- if (kxs == null)
- {
- /*
- * Ah, OK, peer wants to do KEX. Let's be nice and play
- * together.
- */
- kxs = new KexState();
- kxs.dhgexParameters = nextKEXdhgexParameters;
+ enc_sc_key_len, enc_sc_block_len, mac_sc_key_len); + } + catch (IllegalArgumentException e) + { + return false; + } + return true; + } + + private void finishKex() throws IOException + { + if (sessionId == null) + sessionId = kxs.H; + + establishKeyMaterial(); + + /* Tell the other side that we start using the new material */ + + PacketNewKeys ign = new PacketNewKeys(); + tm.sendKexMessage(ign.getPayload()); + + BlockCipher cbc; + MAC mac; + ICompressor comp; + + try + { + cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_client_to_server, true, km.enc_key_client_to_server, + km.initial_iv_client_to_server); + + mac = new MAC(kxs.np.mac_algo_client_to_server, km.integrity_key_client_to_server); + + comp = CompressionFactory.createCompressor(kxs.np.comp_algo_client_to_server); + + } + catch (IllegalArgumentException e1) + { + throw new IOException("Fatal error during MAC startup!"); + } + + tm.changeSendCipher(cbc, mac); + tm.changeSendCompression(comp); + tm.kexFinished(); + } + + public static final String[] getDefaultServerHostkeyAlgorithmList() + { + return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]); + } + + public static final void checkServerHostkeyAlgorithmsList(String[] algos) + { + for (int i = 0; i < algos.length; i++) + { + if (!HOSTKEY_ALGS.contains(algos[i])) + throw new IllegalArgumentException("Unknown server host key algorithm '" + algos[i] + "'"); + } + } + + public static final String[] getDefaultKexAlgorithmList() + { + return KEX_ALGS.toArray(new String[KEX_ALGS.size()]); + } + + public static final void checkKexAlgorithmList(String[] algos) + { + for (int i = 0; i < algos.length; i++) + { + if (!KEX_ALGS.contains(algos[i])) + throw new IllegalArgumentException("Unknown kex algorithm '" + algos[i] + "'"); + } + } + + private boolean verifySignature(byte[] sig, byte[] hostkey) throws IOException + { + if (kxs.np.server_host_key_algo.startsWith("ecdsa-sha2-")) + { + byte[] rs = ECDSASHA2Verify.decodeSSHECDSASignature(sig); + ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(hostkey); + + log.log(50, "Verifying ecdsa signature"); + + return ECDSASHA2Verify.verifySignature(kxs.H, rs, epk); + } + + if (kxs.np.server_host_key_algo.equals("ssh-rsa")) + { + byte[] rs = RSASHA1Verify.decodeSSHRSASignature(sig); + RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(hostkey); + + log.log(50, "Verifying ssh-rsa signature"); + + return RSASHA1Verify.verifySignature(kxs.H, rs, rpk); + } + + if (kxs.np.server_host_key_algo.equals("ssh-dss")) + { + byte[] ds = DSASHA1Verify.decodeSSHDSASignature(sig); + DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(hostkey); + + log.log(50, "Verifying ssh-dss signature"); + + return DSASHA1Verify.verifySignature(kxs.H, ds, dpk); + } + + throw new IOException("Unknown server host key algorithm '" + kxs.np.server_host_key_algo + "'"); + } + + public synchronized void handleMessage(byte[] msg, int msglen) throws IOException + { + PacketKexInit kip; + + if (msg == null) + { + synchronized (accessLock) + { + connectionClosed = true; + accessLock.notifyAll(); + return; + } + } + + if ((kxs == null) && (msg[0] != Packets.SSH_MSG_KEXINIT)) + throw new IOException("Unexpected KEX message (type " + msg[0] + ")"); + + if (ignore_next_kex_packet) + { + ignore_next_kex_packet = false; + return; + } + + if (msg[0] == Packets.SSH_MSG_KEXINIT) + { + if ((kxs != null) && (kxs.state != 0)) + throw new IOException("Unexpected SSH_MSG_KEXINIT message during on-going kex exchange!"); + + if (kxs == null) + { + /* + * Ah, OK, peer wants to do KEX. Let's be nice and play + * together. + */ + kxs = new KexState(); + kxs.dhgexParameters = nextKEXdhgexParameters; kip = new PacketKexInit(nextKEXcryptoWishList); - kxs.localKEX = kip;
- tm.sendKexMessage(kip.getPayload());
- }
-
- kip = new PacketKexInit(msg, 0, msglen);
- kxs.remoteKEX = kip;
-
- kxs.np = mergeKexParameters(kxs.localKEX.getKexParameters(), kxs.remoteKEX.getKexParameters());
-
- if (kxs.np == null)
- throw new IOException("Cannot negotiate, proposals do not match.");
-
- if (kxs.remoteKEX.isFirst_kex_packet_follows() && (kxs.np.guessOK == false))
- {
- /*
- * Guess was wrong, we need to ignore the next kex packet.
- */
-
- ignore_next_kex_packet = true;
- }
-
- if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1"))
- {
- if (kxs.dhgexParameters.getMin_group_len() == 0 || csh.server_versioncomment.matches("OpenSSH_2\\.([0-4]\\.|5\\.[0-2]).*"))
- {
- PacketKexDhGexRequestOld dhgexreq = new PacketKexDhGexRequestOld(kxs.dhgexParameters);
- tm.sendKexMessage(dhgexreq.getPayload());
-
- }
- else
- {
- PacketKexDhGexRequest dhgexreq = new PacketKexDhGexRequest(kxs.dhgexParameters);
- tm.sendKexMessage(dhgexreq.getPayload());
- }
+ kxs.localKEX = kip; + tm.sendKexMessage(kip.getPayload()); + } + + kip = new PacketKexInit(msg, 0, msglen); + kxs.remoteKEX = kip; + + kxs.np = mergeKexParameters(kxs.localKEX.getKexParameters(), kxs.remoteKEX.getKexParameters()); + + if (kxs.np == null) + throw new IOException("Cannot negotiate, proposals do not match."); + + if (kxs.remoteKEX.isFirst_kex_packet_follows() && (kxs.np.guessOK == false)) + { + /* + * Guess was wrong, we need to ignore the next kex packet. + */ + + ignore_next_kex_packet = true; + } + + if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1")) + { + if (kxs.dhgexParameters.getMin_group_len() == 0 || csh.server_versioncomment.matches("OpenSSH_2\\.([0-4]\\.|5\\.[0-2]).*")) + { + PacketKexDhGexRequestOld dhgexreq = new PacketKexDhGexRequestOld(kxs.dhgexParameters); + tm.sendKexMessage(dhgexreq.getPayload()); + + } + else + { + PacketKexDhGexRequest dhgexreq = new PacketKexDhGexRequest(kxs.dhgexParameters); + tm.sendKexMessage(dhgexreq.getPayload()); + } kxs.hashAlgo = "SHA1"; - kxs.state = 1;
- return;
- }
-
- if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1")
+ kxs.state = 1; + return; + } + + if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1") || kxs.np.kex_algo.equals("diffie-hellman-group14-sha1") || kxs.np.kex_algo.equals("ecdh-sha2-nistp256") || kxs.np.kex_algo.equals("ecdh-sha2-nistp384") || kxs.np.kex_algo.equals("ecdh-sha2-nistp521")) { kxs.dhx = GenericDhExchange.getInstance(kxs.np.kex_algo); -
+ kxs.dhx.init(kxs.np.kex_algo); kxs.hashAlgo = kxs.dhx.getHashAlgo(); -
- PacketKexDHInit kp = new PacketKexDHInit(kxs.dhx.getE());
- tm.sendKexMessage(kp.getPayload());
- kxs.state = 1;
- return;
- }
-
- throw new IllegalStateException("Unknown KEX method!");
- }
-
- if (msg[0] == Packets.SSH_MSG_NEWKEYS)
- {
- if (km == null)
- throw new IOException("Peer sent SSH_MSG_NEWKEYS, but I have no key material ready!");
-
- BlockCipher cbc;
- MAC mac;
- ICompressor comp;
-
- try
- {
- cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_server_to_client, false,
- km.enc_key_server_to_client, km.initial_iv_server_to_client);
-
- mac = new MAC(kxs.np.mac_algo_server_to_client, km.integrity_key_server_to_client);
-
- comp = CompressionFactory.createCompressor(kxs.np.comp_algo_server_to_client);
- }
- catch (IllegalArgumentException e1)
- {
- throw new IOException("Fatal error during MAC startup!");
- }
-
- tm.changeRecvCipher(cbc, mac);
- tm.changeRecvCompression(comp);
-
- ConnectionInfo sci = new ConnectionInfo();
-
- kexCount++;
-
- sci.keyExchangeAlgorithm = kxs.np.kex_algo;
- sci.keyExchangeCounter = kexCount;
- sci.clientToServerCryptoAlgorithm = kxs.np.enc_algo_client_to_server;
- sci.serverToClientCryptoAlgorithm = kxs.np.enc_algo_server_to_client;
- sci.clientToServerMACAlgorithm = kxs.np.mac_algo_client_to_server;
- sci.serverToClientMACAlgorithm = kxs.np.mac_algo_server_to_client;
- sci.serverHostKeyAlgorithm = kxs.np.server_host_key_algo;
- sci.serverHostKey = kxs.hostkey;
-
- synchronized (accessLock)
- {
- lastConnInfo = sci;
- accessLock.notifyAll();
- }
-
- kxs = null;
- return;
- }
-
- if ((kxs == null) || (kxs.state == 0))
- throw new IOException("Unexpected Kex submessage!");
-
- if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1"))
- {
- if (kxs.state == 1)
- {
- PacketKexDhGexGroup dhgexgrp = new PacketKexDhGexGroup(msg, 0, msglen);
- kxs.dhgx = new DhGroupExchange(dhgexgrp.getP(), dhgexgrp.getG());
- kxs.dhgx.init(rnd);
- PacketKexDhGexInit dhgexinit = new PacketKexDhGexInit(kxs.dhgx.getE());
- tm.sendKexMessage(dhgexinit.getPayload());
- kxs.state = 2;
- return;
- }
-
- if (kxs.state == 2)
- {
- PacketKexDhGexReply dhgexrpl = new PacketKexDhGexReply(msg, 0, msglen);
-
- kxs.hostkey = dhgexrpl.getHostKey();
-
- if (verifier != null)
- {
- boolean vres = false;
-
- try
- {
- vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey);
- }
- catch (Exception e)
- {
- throw (IOException) new IOException(
- "The server hostkey was not accepted by the verifier callback.").initCause(e);
- }
-
- if (vres == false)
- throw new IOException("The server hostkey was not accepted by the verifier callback");
- }
-
- kxs.dhgx.setF(dhgexrpl.getF());
-
- try
- {
- kxs.H = kxs.dhgx.calculateH(csh.getClientString(), csh.getServerString(),
- kxs.localKEX.getPayload(), kxs.remoteKEX.getPayload(), dhgexrpl.getHostKey(),
- kxs.dhgexParameters);
- }
- catch (IllegalArgumentException e)
- {
- throw (IOException) new IOException("KEX error.").initCause(e);
- }
-
- boolean res = verifySignature(dhgexrpl.getSignature(), kxs.hostkey);
-
- if (res == false)
- throw new IOException("Hostkey signature sent by remote is wrong!");
-
- kxs.K = kxs.dhgx.getK();
-
- finishKex();
- kxs.state = -1;
- return;
- }
-
- throw new IllegalStateException("Illegal State in KEX Exchange!");
- }
-
- if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1")
+ + PacketKexDHInit kp = new PacketKexDHInit(kxs.dhx.getE()); + tm.sendKexMessage(kp.getPayload()); + kxs.state = 1; + return; + } + + throw new IllegalStateException("Unknown KEX method!"); + } + + if (msg[0] == Packets.SSH_MSG_NEWKEYS) + { + if (km == null) + throw new IOException("Peer sent SSH_MSG_NEWKEYS, but I have no key material ready!"); + + BlockCipher cbc; + MAC mac; + ICompressor comp; + + try + { + cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_server_to_client, false, + km.enc_key_server_to_client, km.initial_iv_server_to_client); + + mac = new MAC(kxs.np.mac_algo_server_to_client, km.integrity_key_server_to_client); + + comp = CompressionFactory.createCompressor(kxs.np.comp_algo_server_to_client); + } + catch (IllegalArgumentException e1) + { + throw new IOException("Fatal error during MAC startup!"); + } + + tm.changeRecvCipher(cbc, mac); + tm.changeRecvCompression(comp); + + ConnectionInfo sci = new ConnectionInfo(); + + kexCount++; + + sci.keyExchangeAlgorithm = kxs.np.kex_algo; + sci.keyExchangeCounter = kexCount; + sci.clientToServerCryptoAlgorithm = kxs.np.enc_algo_client_to_server; + sci.serverToClientCryptoAlgorithm = kxs.np.enc_algo_server_to_client; + sci.clientToServerMACAlgorithm = kxs.np.mac_algo_client_to_server; + sci.serverToClientMACAlgorithm = kxs.np.mac_algo_server_to_client; + sci.serverHostKeyAlgorithm = kxs.np.server_host_key_algo; + sci.serverHostKey = kxs.hostkey; + + synchronized (accessLock) + { + lastConnInfo = sci; + accessLock.notifyAll(); + } + + kxs = null; + return; + } + + if ((kxs == null) || (kxs.state == 0)) + throw new IOException("Unexpected Kex submessage!"); + + if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1")) + { + if (kxs.state == 1) + { + PacketKexDhGexGroup dhgexgrp = new PacketKexDhGexGroup(msg, 0, msglen); + kxs.dhgx = new DhGroupExchange(dhgexgrp.getP(), dhgexgrp.getG()); + kxs.dhgx.init(rnd); + PacketKexDhGexInit dhgexinit = new PacketKexDhGexInit(kxs.dhgx.getE()); + tm.sendKexMessage(dhgexinit.getPayload()); + kxs.state = 2; + return; + } + + if (kxs.state == 2) + { + PacketKexDhGexReply dhgexrpl = new PacketKexDhGexReply(msg, 0, msglen); + + kxs.hostkey = dhgexrpl.getHostKey(); + + if (verifier != null) + { + boolean vres = false; + + try + { + vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey); + } + catch (Exception e) + { + throw (IOException) new IOException( + "The server hostkey was not accepted by the verifier callback.").initCause(e); + } + + if (vres == false) + throw new IOException("The server hostkey was not accepted by the verifier callback"); + } + + kxs.dhgx.setF(dhgexrpl.getF()); + + try + { + kxs.H = kxs.dhgx.calculateH(csh.getClientString(), csh.getServerString(), + kxs.localKEX.getPayload(), kxs.remoteKEX.getPayload(), dhgexrpl.getHostKey(), + kxs.dhgexParameters); + } + catch (IllegalArgumentException e) + { + throw (IOException) new IOException("KEX error.").initCause(e); + } + + boolean res = verifySignature(dhgexrpl.getSignature(), kxs.hostkey); + + if (res == false) + throw new IOException("Hostkey signature sent by remote is wrong!"); + + kxs.K = kxs.dhgx.getK(); + + finishKex(); + kxs.state = -1; + return; + } + + throw new IllegalStateException("Illegal State in KEX Exchange!"); + } + + if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1") || kxs.np.kex_algo.equals("diffie-hellman-group14-sha1") || kxs.np.kex_algo.equals("ecdh-sha2-nistp256") || kxs.np.kex_algo.equals("ecdh-sha2-nistp384") || kxs.np.kex_algo.equals("ecdh-sha2-nistp521")) - {
- if (kxs.state == 1)
- {
-
- PacketKexDHReply dhr = new PacketKexDHReply(msg, 0, msglen);
-
- kxs.hostkey = dhr.getHostKey();
-
- if (verifier != null)
- {
- boolean vres = false;
-
- try
- {
- vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey);
- }
- catch (Exception e)
- {
- throw (IOException) new IOException(
- "The server hostkey was not accepted by the verifier callback.").initCause(e);
- }
-
- if (vres == false)
- throw new IOException("The server hostkey was not accepted by the verifier callback");
- }
-
- kxs.dhx.setF(dhr.getF());
-
- try
- {
- kxs.H = kxs.dhx.calculateH(csh.getClientString(), csh.getServerString(), kxs.localKEX.getPayload(),
- kxs.remoteKEX.getPayload(), dhr.getHostKey());
- }
- catch (IllegalArgumentException e)
- {
- throw (IOException) new IOException("KEX error.").initCause(e);
- }
-
- boolean res = verifySignature(dhr.getSignature(), kxs.hostkey);
-
- if (res == false)
- throw new IOException("Hostkey signature sent by remote is wrong!");
-
- kxs.K = kxs.dhx.getK();
-
- finishKex();
- kxs.state = -1;
- return;
- }
- }
-
- throw new IllegalStateException("Unkown KEX method! (" + kxs.np.kex_algo + ")");
- }
-}
+ { + if (kxs.state == 1) + { + + PacketKexDHReply dhr = new PacketKexDHReply(msg, 0, msglen); + + kxs.hostkey = dhr.getHostKey(); + + if (verifier != null) + { + boolean vres = false; + + try + { + vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey); + } + catch (Exception e) + { + throw (IOException) new IOException( + "The server hostkey was not accepted by the verifier callback.").initCause(e); + } + + if (vres == false) + throw new IOException("The server hostkey was not accepted by the verifier callback"); + } + + kxs.dhx.setF(dhr.getF()); + + try + { + kxs.H = kxs.dhx.calculateH(csh.getClientString(), csh.getServerString(), kxs.localKEX.getPayload(), + kxs.remoteKEX.getPayload(), dhr.getHostKey()); + } + catch (IllegalArgumentException e) + { + throw (IOException) new IOException("KEX error.").initCause(e); + } + + boolean res = verifySignature(dhr.getSignature(), kxs.hostkey); + + if (res == false) + throw new IOException("Hostkey signature sent by remote is wrong!"); + + kxs.K = kxs.dhx.getK(); + + finishKex(); + kxs.state = -1; + return; + } + } + + throw new IllegalStateException("Unkown KEX method! (" + kxs.np.kex_algo + ")"); + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/KexParameters.java b/lib/src/main/java/com/trilead/ssh2/transport/KexParameters.java index 6e7e08f..70bcf3e 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/KexParameters.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/KexParameters.java @@ -1,24 +1,24 @@ -package com.trilead.ssh2.transport;
-
-/**
- * KexParameters.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KexParameters
-{
- public byte[] cookie;
- public String[] kex_algorithms;
- public String[] server_host_key_algorithms;
- public String[] encryption_algorithms_client_to_server;
- public String[] encryption_algorithms_server_to_client;
- public String[] mac_algorithms_client_to_server;
- public String[] mac_algorithms_server_to_client;
- public String[] compression_algorithms_client_to_server;
- public String[] compression_algorithms_server_to_client;
- public String[] languages_client_to_server;
- public String[] languages_server_to_client;
- public boolean first_kex_packet_follows;
- public int reserved_field1;
-}
+package com.trilead.ssh2.transport; + +/** + * KexParameters. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: KexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class KexParameters +{ + public byte[] cookie; + public String[] kex_algorithms; + public String[] server_host_key_algorithms; + public String[] encryption_algorithms_client_to_server; + public String[] encryption_algorithms_server_to_client; + public String[] mac_algorithms_client_to_server; + public String[] mac_algorithms_server_to_client; + public String[] compression_algorithms_client_to_server; + public String[] compression_algorithms_server_to_client; + public String[] languages_client_to_server; + public String[] languages_server_to_client; + public boolean first_kex_packet_follows; + public int reserved_field1; +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/KexState.java b/lib/src/main/java/com/trilead/ssh2/transport/KexState.java index d9f1004..8611f3f 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/KexState.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/KexState.java @@ -1,33 +1,33 @@ -package com.trilead.ssh2.transport;
-
-
-import java.math.BigInteger;
-
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.crypto.dh.DhGroupExchange;
+package com.trilead.ssh2.transport; + + +import java.math.BigInteger; + +import com.trilead.ssh2.DHGexParameters; +import com.trilead.ssh2.crypto.dh.DhGroupExchange; import com.trilead.ssh2.crypto.dh.GenericDhExchange; -import com.trilead.ssh2.packets.PacketKexInit;
-
-/**
- * KexState.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexState.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class KexState
-{
- public PacketKexInit localKEX;
- public PacketKexInit remoteKEX;
- public NegotiatedParameters np;
- public int state = 0;
-
- public BigInteger K;
- public byte[] H;
-
- public byte[] hostkey;
-
+import com.trilead.ssh2.packets.PacketKexInit; + +/** + * KexState. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: KexState.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class KexState +{ + public PacketKexInit localKEX; + public PacketKexInit remoteKEX; + public NegotiatedParameters np; + public int state = 0; + + public BigInteger K; + public byte[] H; + + public byte[] hostkey; + public String hashAlgo; public GenericDhExchange dhx; - public DhGroupExchange dhgx;
- public DHGexParameters dhgexParameters;
-}
+ public DhGroupExchange dhgx; + public DHGexParameters dhgexParameters; +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/MessageHandler.java b/lib/src/main/java/com/trilead/ssh2/transport/MessageHandler.java index 1f173e8..039d473 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/MessageHandler.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/MessageHandler.java @@ -1,14 +1,14 @@ -package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-
-/**
- * MessageHandler.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: MessageHandler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public interface MessageHandler
-{
- public void handleMessage(byte[] msg, int msglen) throws IOException;
-}
+package com.trilead.ssh2.transport; + +import java.io.IOException; + +/** + * MessageHandler. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: MessageHandler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public interface MessageHandler +{ + public void handleMessage(byte[] msg, int msglen) throws IOException; +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/NegotiateException.java b/lib/src/main/java/com/trilead/ssh2/transport/NegotiateException.java index 8562a65..ff53097 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/NegotiateException.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/NegotiateException.java @@ -1,12 +1,12 @@ -package com.trilead.ssh2.transport;
-
-/**
- * NegotiateException.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NegotiateException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class NegotiateException extends Exception
-{
- private static final long serialVersionUID = 3689910669428143157L;
-}
+package com.trilead.ssh2.transport; + +/** + * NegotiateException. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: NegotiateException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class NegotiateException extends Exception +{ + private static final long serialVersionUID = 3689910669428143157L; +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java b/lib/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java index 6f035c0..e9f3a0a 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java @@ -1,22 +1,22 @@ -package com.trilead.ssh2.transport;
-
-/**
- * NegotiatedParameters.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NegotiatedParameters.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class NegotiatedParameters
-{
- public boolean guessOK;
- public String kex_algo;
- public String server_host_key_algo;
- public String enc_algo_client_to_server;
- public String enc_algo_server_to_client;
- public String mac_algo_client_to_server;
- public String mac_algo_server_to_client;
- public String comp_algo_client_to_server;
- public String comp_algo_server_to_client;
- public String lang_client_to_server;
- public String lang_server_to_client;
-}
+package com.trilead.ssh2.transport; + +/** + * NegotiatedParameters. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: NegotiatedParameters.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class NegotiatedParameters +{ + public boolean guessOK; + public String kex_algo; + public String server_host_key_algo; + public String enc_algo_client_to_server; + public String enc_algo_server_to_client; + public String mac_algo_client_to_server; + public String mac_algo_server_to_client; + public String comp_algo_client_to_server; + public String comp_algo_server_to_client; + public String lang_client_to_server; + public String lang_server_to_client; +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/TransportConnection.java b/lib/src/main/java/com/trilead/ssh2/transport/TransportConnection.java index 2c04ce4..906c3c9 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/TransportConnection.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/TransportConnection.java @@ -1,343 +1,343 @@ -
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.CipherInputStream;
-import com.trilead.ssh2.crypto.cipher.CipherOutputStream;
-import com.trilead.ssh2.crypto.cipher.NullCipher;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.Packets;
-
-
-/**
- * TransportConnection.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TransportConnection.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class TransportConnection
-{
- private static final Logger log = Logger.getLogger(TransportConnection.class);
-
- int send_seq_number = 0;
-
- int recv_seq_number = 0;
-
- CipherInputStream cis;
-
- CipherOutputStream cos;
-
- boolean useRandomPadding = false;
-
- /* Depends on current MAC and CIPHER */
-
- MAC send_mac;
-
- byte[] send_mac_buffer;
-
- int send_padd_blocksize = 8;
-
- MAC recv_mac;
-
- byte[] recv_mac_buffer;
-
- byte[] recv_mac_buffer_cmp;
-
- int recv_padd_blocksize = 8;
-
- ICompressor recv_comp = null;
-
- ICompressor send_comp = null;
-
- boolean can_recv_compress = false;
-
- boolean can_send_compress = false;
-
- byte[] recv_comp_buffer;
-
- byte[] send_comp_buffer;
-
- /* won't change */
-
- final byte[] send_padding_buffer = new byte[256];
-
- final byte[] send_packet_header_buffer = new byte[5];
-
- final byte[] recv_padding_buffer = new byte[256];
-
- final byte[] recv_packet_header_buffer = new byte[5];
-
- boolean recv_packet_header_present = false;
-
- ClientServerHello csh;
-
- final SecureRandom rnd;
-
- public TransportConnection(InputStream is, OutputStream os, SecureRandom rnd)
- {
- this.cis = new CipherInputStream(new NullCipher(), is);
- this.cos = new CipherOutputStream(new NullCipher(), os);
- this.rnd = rnd;
- }
-
- public void changeRecvCipher(BlockCipher bc, MAC mac)
- {
- cis.changeCipher(bc);
- recv_mac = mac;
- recv_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
- recv_mac_buffer_cmp = (mac != null) ? new byte[mac.size()] : null;
- recv_padd_blocksize = bc.getBlockSize();
- if (recv_padd_blocksize < 8)
- recv_padd_blocksize = 8;
- }
-
- public void changeSendCipher(BlockCipher bc, MAC mac)
- {
- if ((bc instanceof NullCipher) == false)
- {
- /* Only use zero byte padding for the first few packets */
- useRandomPadding = true;
- /* Once we start encrypting, there is no way back */
- }
-
- cos.changeCipher(bc);
- send_mac = mac;
- send_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
- send_padd_blocksize = bc.getBlockSize();
- if (send_padd_blocksize < 8)
- send_padd_blocksize = 8;
- }
-
- public void changeRecvCompression(ICompressor comp)
- {
- recv_comp = comp;
-
- if (comp != null) {
- recv_comp_buffer = new byte[comp.getBufferSize()];
- can_recv_compress |= recv_comp.canCompressPreauth();
- }
- }
-
- public void changeSendCompression(ICompressor comp)
- {
- send_comp = comp;
-
- if (comp != null) {
- send_comp_buffer = new byte[comp.getBufferSize()];
- can_send_compress |= send_comp.canCompressPreauth();
- }
- }
-
- public void sendMessage(byte[] message) throws IOException
- {
- sendMessage(message, 0, message.length, 0);
- }
-
- public void sendMessage(byte[] message, int off, int len) throws IOException
- {
- sendMessage(message, off, len, 0);
- }
-
- public int getPacketOverheadEstimate()
- {
- // return an estimate for the paket overhead (for send operations)
- return 5 + 4 + (send_padd_blocksize - 1) + send_mac_buffer.length;
- }
-
- public void sendMessage(byte[] message, int off, int len, int padd) throws IOException
- {
- if (padd < 4)
- padd = 4;
- else if (padd > 64)
- padd = 64;
-
- if (send_comp != null && can_send_compress) {
- if (send_comp_buffer.length < message.length + 1024)
- send_comp_buffer = new byte[message.length + 1024];
- len = send_comp.compress(message, off, len, send_comp_buffer);
- message = send_comp_buffer;
- }
-
- int packet_len = 5 + len + padd; /* Minimum allowed padding is 4 */
-
- int slack = packet_len % send_padd_blocksize;
-
- if (slack != 0)
- {
- packet_len += (send_padd_blocksize - slack);
- }
-
- if (packet_len < 16)
- packet_len = 16;
-
- int padd_len = packet_len - (5 + len);
-
- if (useRandomPadding)
- {
- for (int i = 0; i < padd_len; i = i + 4)
- {
- /*
- * don't waste calls to rnd.nextInt() (by using only 8bit of the
- * output). just believe me: even though we may write here up to 3
- * bytes which won't be used, there is no "buffer overflow" (i.e.,
- * arrayindexoutofbounds). the padding buffer is big enough =) (256
- * bytes, and that is bigger than any current cipher block size + 64).
- */
-
- int r = rnd.nextInt();
- send_padding_buffer[i] = (byte) r;
- send_padding_buffer[i + 1] = (byte) (r >> 8);
- send_padding_buffer[i + 2] = (byte) (r >> 16);
- send_padding_buffer[i + 3] = (byte) (r >> 24);
- }
- }
- else
- {
- /* use zero padding for unencrypted traffic */
- for (int i = 0; i < padd_len; i++)
- send_padding_buffer[i] = 0;
- /* Actually this code is paranoid: we never filled any
- * bytes into the padding buffer so far, therefore it should
- * consist of zeros only.
- */
- }
-
- send_packet_header_buffer[0] = (byte) ((packet_len - 4) >> 24);
- send_packet_header_buffer[1] = (byte) ((packet_len - 4) >> 16);
- send_packet_header_buffer[2] = (byte) ((packet_len - 4) >> 8);
- send_packet_header_buffer[3] = (byte) ((packet_len - 4));
- send_packet_header_buffer[4] = (byte) padd_len;
-
- cos.write(send_packet_header_buffer, 0, 5);
- cos.write(message, off, len);
- cos.write(send_padding_buffer, 0, padd_len);
-
- if (send_mac != null)
- {
- send_mac.initMac(send_seq_number);
- send_mac.update(send_packet_header_buffer, 0, 5);
- send_mac.update(message, off, len);
- send_mac.update(send_padding_buffer, 0, padd_len);
-
- send_mac.getMac(send_mac_buffer, 0);
- cos.writePlain(send_mac_buffer, 0, send_mac_buffer.length);
- }
-
- cos.flush();
-
- if (log.isEnabled())
- {
- log.log(90, "Sent " + Packets.getMessageName(message[off] & 0xff) + " " + len + " bytes payload");
- }
-
- send_seq_number++;
- }
-
- public int peekNextMessageLength() throws IOException
- {
- if (recv_packet_header_present == false)
- {
- cis.read(recv_packet_header_buffer, 0, 5);
- recv_packet_header_present = true;
- }
-
- int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24)
- | ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8)
- | ((recv_packet_header_buffer[3] & 0xff));
-
- int padding_length = recv_packet_header_buffer[4] & 0xff;
-
- if (packet_length > 35000 || packet_length < 12)
- throw new IOException("Illegal packet size! (" + packet_length + ")");
-
- int payload_length = packet_length - padding_length - 1;
-
- if (payload_length < 0)
- throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")");
-
- return payload_length;
- }
-
- public int receiveMessage(byte buffer[], int off, int len) throws IOException
- {
- if (recv_packet_header_present == false)
- {
- cis.read(recv_packet_header_buffer, 0, 5);
- }
- else
- recv_packet_header_present = false;
-
- int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24)
- | ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8)
- | ((recv_packet_header_buffer[3] & 0xff));
-
- int padding_length = recv_packet_header_buffer[4] & 0xff;
-
- if (packet_length > 35000 || packet_length < 12)
- throw new IOException("Illegal packet size! (" + packet_length + ")");
-
- int payload_length = packet_length - padding_length - 1;
-
- if (payload_length < 0)
- throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")");
-
- if (payload_length >= len)
- throw new IOException("Receive buffer too small (" + len + ", need " + payload_length + ")");
-
- cis.read(buffer, off, payload_length);
- cis.read(recv_padding_buffer, 0, padding_length);
-
- if (recv_mac != null)
- {
- cis.readPlain(recv_mac_buffer, 0, recv_mac_buffer.length);
-
- recv_mac.initMac(recv_seq_number);
- recv_mac.update(recv_packet_header_buffer, 0, 5);
- recv_mac.update(buffer, off, payload_length);
- recv_mac.update(recv_padding_buffer, 0, padding_length);
- recv_mac.getMac(recv_mac_buffer_cmp, 0);
-
- for (int i = 0; i < recv_mac_buffer.length; i++)
- {
- if (recv_mac_buffer[i] != recv_mac_buffer_cmp[i])
- throw new IOException("Remote sent corrupt MAC.");
- }
- }
-
- recv_seq_number++;
-
- if (log.isEnabled())
- {
- log.log(90, "Received " + Packets.getMessageName(buffer[off] & 0xff) + " " + payload_length
- + " bytes payload");
- }
-
- if (recv_comp != null && can_recv_compress) {
- int[] uncomp_len = new int[] { payload_length };
- buffer = recv_comp.uncompress(buffer, off, uncomp_len);
-
- if (buffer == null) {
- throw new IOException("Error while inflating remote data");
- } else {
- return uncomp_len[0];
- }
- } else {
- return payload_length;
- }
- }
-
- /**
- *
- */
- public void startCompression() {
- can_recv_compress = true;
- can_send_compress = true;
- }
-}
+ +package com.trilead.ssh2.transport; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.security.SecureRandom; + +import com.trilead.ssh2.compression.ICompressor; +import com.trilead.ssh2.crypto.cipher.BlockCipher; +import com.trilead.ssh2.crypto.cipher.CipherInputStream; +import com.trilead.ssh2.crypto.cipher.CipherOutputStream; +import com.trilead.ssh2.crypto.cipher.NullCipher; +import com.trilead.ssh2.crypto.digest.MAC; +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.Packets; + + +/** + * TransportConnection. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: TransportConnection.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $ + */ +public class TransportConnection +{ + private static final Logger log = Logger.getLogger(TransportConnection.class); + + int send_seq_number = 0; + + int recv_seq_number = 0; + + CipherInputStream cis; + + CipherOutputStream cos; + + boolean useRandomPadding = false; + + /* Depends on current MAC and CIPHER */ + + MAC send_mac; + + byte[] send_mac_buffer; + + int send_padd_blocksize = 8; + + MAC recv_mac; + + byte[] recv_mac_buffer; + + byte[] recv_mac_buffer_cmp; + + int recv_padd_blocksize = 8; + + ICompressor recv_comp = null; + + ICompressor send_comp = null; + + boolean can_recv_compress = false; + + boolean can_send_compress = false; + + byte[] recv_comp_buffer; + + byte[] send_comp_buffer; + + /* won't change */ + + final byte[] send_padding_buffer = new byte[256]; + + final byte[] send_packet_header_buffer = new byte[5]; + + final byte[] recv_padding_buffer = new byte[256]; + + final byte[] recv_packet_header_buffer = new byte[5]; + + boolean recv_packet_header_present = false; + + ClientServerHello csh; + + final SecureRandom rnd; + + public TransportConnection(InputStream is, OutputStream os, SecureRandom rnd) + { + this.cis = new CipherInputStream(new NullCipher(), is); + this.cos = new CipherOutputStream(new NullCipher(), os); + this.rnd = rnd; + } + + public void changeRecvCipher(BlockCipher bc, MAC mac) + { + cis.changeCipher(bc); + recv_mac = mac; + recv_mac_buffer = (mac != null) ? new byte[mac.size()] : null; + recv_mac_buffer_cmp = (mac != null) ? new byte[mac.size()] : null; + recv_padd_blocksize = bc.getBlockSize(); + if (recv_padd_blocksize < 8) + recv_padd_blocksize = 8; + } + + public void changeSendCipher(BlockCipher bc, MAC mac) + { + if ((bc instanceof NullCipher) == false) + { + /* Only use zero byte padding for the first few packets */ + useRandomPadding = true; + /* Once we start encrypting, there is no way back */ + } + + cos.changeCipher(bc); + send_mac = mac; + send_mac_buffer = (mac != null) ? new byte[mac.size()] : null; + send_padd_blocksize = bc.getBlockSize(); + if (send_padd_blocksize < 8) + send_padd_blocksize = 8; + } + + public void changeRecvCompression(ICompressor comp) + { + recv_comp = comp; + + if (comp != null) { + recv_comp_buffer = new byte[comp.getBufferSize()]; + can_recv_compress |= recv_comp.canCompressPreauth(); + } + } + + public void changeSendCompression(ICompressor comp) + { + send_comp = comp; + + if (comp != null) { + send_comp_buffer = new byte[comp.getBufferSize()]; + can_send_compress |= send_comp.canCompressPreauth(); + } + } + + public void sendMessage(byte[] message) throws IOException + { + sendMessage(message, 0, message.length, 0); + } + + public void sendMessage(byte[] message, int off, int len) throws IOException + { + sendMessage(message, off, len, 0); + } + + public int getPacketOverheadEstimate() + { + // return an estimate for the paket overhead (for send operations) + return 5 + 4 + (send_padd_blocksize - 1) + send_mac_buffer.length; + } + + public void sendMessage(byte[] message, int off, int len, int padd) throws IOException + { + if (padd < 4) + padd = 4; + else if (padd > 64) + padd = 64; + + if (send_comp != null && can_send_compress) { + if (send_comp_buffer.length < message.length + 1024) + send_comp_buffer = new byte[message.length + 1024]; + len = send_comp.compress(message, off, len, send_comp_buffer); + message = send_comp_buffer; + } + + int packet_len = 5 + len + padd; /* Minimum allowed padding is 4 */ + + int slack = packet_len % send_padd_blocksize; + + if (slack != 0) + { + packet_len += (send_padd_blocksize - slack); + } + + if (packet_len < 16) + packet_len = 16; + + int padd_len = packet_len - (5 + len); + + if (useRandomPadding) + { + for (int i = 0; i < padd_len; i = i + 4) + { + /* + * don't waste calls to rnd.nextInt() (by using only 8bit of the + * output). just believe me: even though we may write here up to 3 + * bytes which won't be used, there is no "buffer overflow" (i.e., + * arrayindexoutofbounds). the padding buffer is big enough =) (256 + * bytes, and that is bigger than any current cipher block size + 64). + */ + + int r = rnd.nextInt(); + send_padding_buffer[i] = (byte) r; + send_padding_buffer[i + 1] = (byte) (r >> 8); + send_padding_buffer[i + 2] = (byte) (r >> 16); + send_padding_buffer[i + 3] = (byte) (r >> 24); + } + } + else + { + /* use zero padding for unencrypted traffic */ + for (int i = 0; i < padd_len; i++) + send_padding_buffer[i] = 0; + /* Actually this code is paranoid: we never filled any + * bytes into the padding buffer so far, therefore it should + * consist of zeros only. + */ + } + + send_packet_header_buffer[0] = (byte) ((packet_len - 4) >> 24); + send_packet_header_buffer[1] = (byte) ((packet_len - 4) >> 16); + send_packet_header_buffer[2] = (byte) ((packet_len - 4) >> 8); + send_packet_header_buffer[3] = (byte) ((packet_len - 4)); + send_packet_header_buffer[4] = (byte) padd_len; + + cos.write(send_packet_header_buffer, 0, 5); + cos.write(message, off, len); + cos.write(send_padding_buffer, 0, padd_len); + + if (send_mac != null) + { + send_mac.initMac(send_seq_number); + send_mac.update(send_packet_header_buffer, 0, 5); + send_mac.update(message, off, len); + send_mac.update(send_padding_buffer, 0, padd_len); + + send_mac.getMac(send_mac_buffer, 0); + cos.writePlain(send_mac_buffer, 0, send_mac_buffer.length); + } + + cos.flush(); + + if (log.isEnabled()) + { + log.log(90, "Sent " + Packets.getMessageName(message[off] & 0xff) + " " + len + " bytes payload"); + } + + send_seq_number++; + } + + public int peekNextMessageLength() throws IOException + { + if (recv_packet_header_present == false) + { + cis.read(recv_packet_header_buffer, 0, 5); + recv_packet_header_present = true; + } + + int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24) + | ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8) + | ((recv_packet_header_buffer[3] & 0xff)); + + int padding_length = recv_packet_header_buffer[4] & 0xff; + + if (packet_length > 35000 || packet_length < 12) + throw new IOException("Illegal packet size! (" + packet_length + ")"); + + int payload_length = packet_length - padding_length - 1; + + if (payload_length < 0) + throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")"); + + return payload_length; + } + + public int receiveMessage(byte buffer[], int off, int len) throws IOException + { + if (recv_packet_header_present == false) + { + cis.read(recv_packet_header_buffer, 0, 5); + } + else + recv_packet_header_present = false; + + int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24) + | ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8) + | ((recv_packet_header_buffer[3] & 0xff)); + + int padding_length = recv_packet_header_buffer[4] & 0xff; + + if (packet_length > 35000 || packet_length < 12) + throw new IOException("Illegal packet size! (" + packet_length + ")"); + + int payload_length = packet_length - padding_length - 1; + + if (payload_length < 0) + throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")"); + + if (payload_length >= len) + throw new IOException("Receive buffer too small (" + len + ", need " + payload_length + ")"); + + cis.read(buffer, off, payload_length); + cis.read(recv_padding_buffer, 0, padding_length); + + if (recv_mac != null) + { + cis.readPlain(recv_mac_buffer, 0, recv_mac_buffer.length); + + recv_mac.initMac(recv_seq_number); + recv_mac.update(recv_packet_header_buffer, 0, 5); + recv_mac.update(buffer, off, payload_length); + recv_mac.update(recv_padding_buffer, 0, padding_length); + recv_mac.getMac(recv_mac_buffer_cmp, 0); + + for (int i = 0; i < recv_mac_buffer.length; i++) + { + if (recv_mac_buffer[i] != recv_mac_buffer_cmp[i]) + throw new IOException("Remote sent corrupt MAC."); + } + } + + recv_seq_number++; + + if (log.isEnabled()) + { + log.log(90, "Received " + Packets.getMessageName(buffer[off] & 0xff) + " " + payload_length + + " bytes payload"); + } + + if (recv_comp != null && can_recv_compress) { + int[] uncomp_len = new int[] { payload_length }; + buffer = recv_comp.uncompress(buffer, off, uncomp_len); + + if (buffer == null) { + throw new IOException("Error while inflating remote data"); + } else { + return uncomp_len[0]; + } + } else { + return payload_length; + } + } + + /** + * + */ + public void startCompression() { + can_recv_compress = true; + can_send_compress = true; + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/transport/TransportManager.java b/lib/src/main/java/com/trilead/ssh2/transport/TransportManager.java index c81dbdf..2e88126 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/TransportManager.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/TransportManager.java @@ -1,802 +1,802 @@ -
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.net.UnknownHostException;
-import java.security.SecureRandom;
-import java.util.Vector;
-
-import com.trilead.ssh2.ConnectionInfo;
-import com.trilead.ssh2.ConnectionMonitor;
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.HTTPProxyData;
-import com.trilead.ssh2.HTTPProxyException;
-import com.trilead.ssh2.ProxyData;
-import com.trilead.ssh2.ServerHostKeyVerifier;
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.Base64;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketDisconnect;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.util.Tokenizer;
-
-
-/*
- * Yes, the "standard" is a big mess. On one side, the say that arbitary channel
- * packets are allowed during kex exchange, on the other side we need to blindly
- * ignore the next _packet_ if the KEX guess was wrong. Where do we know from that
- * the next packet is not a channel data packet? Yes, we could check if it is in
- * the KEX range. But the standard says nothing about this. The OpenSSH guys
- * block local "normal" traffic during KEX. That's fine - however, they assume
- * that the other side is doing the same. During re-key, if they receive traffic
- * other than KEX, they become horribly irritated and kill the connection. Since
- * we are very likely going to communicate with OpenSSH servers, we have to play
- * the same game - even though we could do better.
- *
- * btw: having stdout and stderr on the same channel, with a shared window, is
- * also a VERY good idea... =(
- */
-
-/**
- * TransportManager.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TransportManager.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TransportManager
-{
- private static final Logger log = Logger.getLogger(TransportManager.class);
-
- class HandlerEntry
- {
- MessageHandler mh;
- int low;
- int high;
- }
-
- private final Vector<byte[]> asynchronousQueue = new Vector<byte[]>();
- private Thread asynchronousThread = null;
-
- class AsynchronousWorker extends Thread
- {
- public void run()
- {
- while (true)
- {
- byte[] msg = null;
-
- synchronized (asynchronousQueue)
- {
- if (asynchronousQueue.size() == 0)
- {
- /* After the queue is empty for about 2 seconds, stop this thread */
-
- try
- {
- asynchronousQueue.wait(2000);
- }
- catch (InterruptedException e)
- {
- /* OKOK, if somebody interrupts us, then we may die earlier. */
- }
-
- if (asynchronousQueue.size() == 0)
- {
- asynchronousThread = null;
- return;
- }
- }
-
- msg = asynchronousQueue.remove(0);
- }
-
- /* The following invocation may throw an IOException.
- * There is no point in handling it - it simply means
- * that the connection has a problem and we should stop
- * sending asynchronously messages. We do not need to signal that
- * we have exited (asynchronousThread = null): further
- * messages in the queue cannot be sent by this or any
- * other thread.
- * Other threads will sooner or later (when receiving or
- * sending the next message) get the same IOException and
- * get to the same conclusion.
- */
-
- try
- {
- sendMessage(msg);
- }
- catch (IOException e)
- {
- return;
- }
- }
- }
- }
-
- String hostname;
- int port;
- final Socket sock = new Socket();
-
- Object connectionSemaphore = new Object();
-
- boolean flagKexOngoing = false;
- boolean connectionClosed = false;
-
- Throwable reasonClosedCause = null;
-
- TransportConnection tc;
- KexManager km;
-
- Vector<HandlerEntry> messageHandlers = new Vector<HandlerEntry>();
-
- Thread receiveThread;
-
- Vector connectionMonitors = new Vector();
- boolean monitorsWereInformed = false;
-
- /**
- * There were reports that there are JDKs which use
- * the resolver even though one supplies a dotted IP
- * address in the Socket constructor. That is why we
- * try to generate the InetAdress "by hand".
- *
- * @param host
- * @return the InetAddress
- * @throws UnknownHostException
- */
- private InetAddress createInetAddress(String host) throws UnknownHostException
- {
- /* Check if it is a dotted IP4 address */
-
- InetAddress addr = parseIPv4Address(host);
-
- if (addr != null)
- return addr;
-
- return InetAddress.getByName(host);
- }
-
- private InetAddress parseIPv4Address(String host) throws UnknownHostException
- {
- if (host == null)
- return null;
-
- String[] quad = Tokenizer.parseTokens(host, '.');
-
- if ((quad == null) || (quad.length != 4))
- return null;
-
- byte[] addr = new byte[4];
-
- for (int i = 0; i < 4; i++)
- {
- int part = 0;
-
- if ((quad[i].length() == 0) || (quad[i].length() > 3))
- return null;
-
- for (int k = 0; k < quad[i].length(); k++)
- {
- char c = quad[i].charAt(k);
-
- /* No, Character.isDigit is not the same */
- if ((c < '0') || (c > '9'))
- return null;
-
- part = part * 10 + (c - '0');
- }
-
- if (part > 255) /* 300.1.2.3 is invalid =) */
- return null;
-
- addr[i] = (byte) part;
- }
-
- return InetAddress.getByAddress(host, addr);
- }
-
- public TransportManager(String host, int port) throws IOException
- {
- this.hostname = host;
- this.port = port;
- }
-
- public int getPacketOverheadEstimate()
- {
- return tc.getPacketOverheadEstimate();
- }
-
- public void setTcpNoDelay(boolean state) throws IOException
- {
- sock.setTcpNoDelay(state);
- }
-
- public void setSoTimeout(int timeout) throws IOException
- {
- sock.setSoTimeout(timeout);
- }
-
- public ConnectionInfo getConnectionInfo(int kexNumber) throws IOException
- {
- return km.getOrWaitForConnectionInfo(kexNumber);
- }
-
- public Throwable getReasonClosedCause()
- {
- synchronized (connectionSemaphore)
- {
- return reasonClosedCause;
- }
- }
-
- public byte[] getSessionIdentifier()
- {
- return km.sessionId;
- }
-
- public void close(Throwable cause, boolean useDisconnectPacket)
- {
- if (useDisconnectPacket == false)
- {
- /* OK, hard shutdown - do not aquire the semaphore,
- * perhaps somebody is inside (and waits until the remote
- * side is ready to accept new data). */
-
- try
- {
- sock.close();
- }
- catch (IOException ignore)
- {
- }
-
- /* OK, whoever tried to send data, should now agree that
- * there is no point in further waiting =)
- * It is safe now to aquire the semaphore.
- */
- }
-
- synchronized (connectionSemaphore)
- {
- if (connectionClosed == false)
- {
- if (useDisconnectPacket == true)
- {
- try
- {
- byte[] msg = new PacketDisconnect(Packets.SSH_DISCONNECT_BY_APPLICATION, cause.getMessage(), "")
- .getPayload();
- if (tc != null)
- tc.sendMessage(msg);
- }
- catch (IOException ignore)
- {
- }
-
- try
- {
- sock.close();
- }
- catch (IOException ignore)
- {
- }
- }
-
- connectionClosed = true;
- reasonClosedCause = cause; /* may be null */
- }
- connectionSemaphore.notifyAll();
- }
-
- /* No check if we need to inform the monitors */
-
- Vector monitors = null;
-
- synchronized (this)
- {
- /* Short term lock to protect "connectionMonitors"
- * and "monitorsWereInformed"
- * (they may be modified concurrently)
- */
-
- if (monitorsWereInformed == false)
- {
- monitorsWereInformed = true;
- monitors = (Vector) connectionMonitors.clone();
- }
- }
-
- if (monitors != null)
- {
- for (int i = 0; i < monitors.size(); i++)
- {
- try
- {
- ConnectionMonitor cmon = (ConnectionMonitor) monitors.elementAt(i);
- cmon.connectionLost(reasonClosedCause);
- }
- catch (Exception ignore)
- {
- }
- }
- }
- }
-
- private void establishConnection(ProxyData proxyData, int connectTimeout) throws IOException
- {
- /* See the comment for createInetAddress() */
-
- if (proxyData == null)
- {
- InetAddress addr = createInetAddress(hostname);
- sock.connect(new InetSocketAddress(addr, port), connectTimeout);
- sock.setSoTimeout(0);
- return;
- }
-
- if (proxyData instanceof HTTPProxyData)
- {
- HTTPProxyData pd = (HTTPProxyData) proxyData;
-
- /* At the moment, we only support HTTP proxies */
-
- InetAddress addr = createInetAddress(pd.proxyHost);
- sock.connect(new InetSocketAddress(addr, pd.proxyPort), connectTimeout);
- sock.setSoTimeout(0);
-
- /* OK, now tell the proxy where we actually want to connect to */
-
- StringBuffer sb = new StringBuffer();
-
- sb.append("CONNECT ");
- sb.append(hostname);
- sb.append(':');
- sb.append(port);
- sb.append(" HTTP/1.0\r\n");
-
- if ((pd.proxyUser != null) && (pd.proxyPass != null))
- {
- String credentials = pd.proxyUser + ":" + pd.proxyPass;
- char[] encoded = Base64.encode(credentials.getBytes("ISO-8859-1"));
- sb.append("Proxy-Authorization: Basic ");
- sb.append(encoded);
- sb.append("\r\n");
- }
-
- if (pd.requestHeaderLines != null)
- {
- for (int i = 0; i < pd.requestHeaderLines.length; i++)
- {
- if (pd.requestHeaderLines[i] != null)
- {
- sb.append(pd.requestHeaderLines[i]);
- sb.append("\r\n");
- }
- }
- }
-
- sb.append("\r\n");
-
- OutputStream out = sock.getOutputStream();
-
- out.write(sb.toString().getBytes("ISO-8859-1"));
- out.flush();
-
- /* Now parse the HTTP response */
-
- byte[] buffer = new byte[1024];
- InputStream in = sock.getInputStream();
-
- int len = ClientServerHello.readLineRN(in, buffer);
-
- String httpReponse = new String(buffer, 0, len, "ISO-8859-1");
-
- if (httpReponse.startsWith("HTTP/") == false)
- throw new IOException("The proxy did not send back a valid HTTP response.");
-
- /* "HTTP/1.X XYZ X" => 14 characters minimum */
-
- if ((httpReponse.length() < 14) || (httpReponse.charAt(8) != ' ') || (httpReponse.charAt(12) != ' '))
- throw new IOException("The proxy did not send back a valid HTTP response.");
-
- int errorCode = 0;
-
- try
- {
- errorCode = Integer.parseInt(httpReponse.substring(9, 12));
- }
- catch (NumberFormatException ignore)
- {
- throw new IOException("The proxy did not send back a valid HTTP response.");
- }
-
- if ((errorCode < 0) || (errorCode > 999))
- throw new IOException("The proxy did not send back a valid HTTP response.");
-
- if (errorCode != 200)
- {
- throw new HTTPProxyException(httpReponse.substring(13), errorCode);
- }
-
- /* OK, read until empty line */
-
- while (true)
- {
- len = ClientServerHello.readLineRN(in, buffer);
- if (len == 0)
- break;
- }
- return;
- }
-
- throw new IOException("Unsupported ProxyData");
- }
-
- public void initialize(CryptoWishList cwl, ServerHostKeyVerifier verifier, DHGexParameters dhgex,
- int connectTimeout, SecureRandom rnd, ProxyData proxyData) throws IOException
- {
- /* First, establish the TCP connection to the SSH-2 server */
-
- establishConnection(proxyData, connectTimeout);
-
- /* Parse the server line and say hello - important: this information is later needed for the
- * key exchange (to stop man-in-the-middle attacks) - that is why we wrap it into an object
- * for later use.
- */
-
- ClientServerHello csh = new ClientServerHello(sock.getInputStream(), sock.getOutputStream());
-
- tc = new TransportConnection(sock.getInputStream(), sock.getOutputStream(), rnd);
-
- km = new KexManager(this, csh, cwl, hostname, port, verifier, rnd);
- km.initiateKEX(cwl, dhgex);
-
- receiveThread = new Thread(new Runnable()
- {
- public void run()
- {
- try
- {
- receiveLoop();
- }
- catch (IOException e)
- {
- close(e, false);
-
- if (log.isEnabled())
- log.log(10, "Receive thread: error in receiveLoop: " + e.getMessage());
- }
-
- if (log.isEnabled())
- log.log(50, "Receive thread: back from receiveLoop");
-
- /* Tell all handlers that it is time to say goodbye */
-
- if (km != null)
- {
- try
- {
- km.handleMessage(null, 0);
- }
- catch (IOException e)
- {
- }
- }
-
- for (int i = 0; i < messageHandlers.size(); i++)
- {
- HandlerEntry he = messageHandlers.elementAt(i);
- try
- {
- he.mh.handleMessage(null, 0);
- }
- catch (Exception ignore)
- {
- }
- }
- }
- });
-
- receiveThread.setDaemon(true);
- receiveThread.start();
- }
-
- public void registerMessageHandler(MessageHandler mh, int low, int high)
- {
- HandlerEntry he = new HandlerEntry();
- he.mh = mh;
- he.low = low;
- he.high = high;
-
- synchronized (messageHandlers)
- {
- messageHandlers.addElement(he);
- }
- }
-
- public void removeMessageHandler(MessageHandler mh, int low, int high)
- {
- synchronized (messageHandlers)
- {
- for (int i = 0; i < messageHandlers.size(); i++)
- {
- HandlerEntry he = messageHandlers.elementAt(i);
- if ((he.mh == mh) && (he.low == low) && (he.high == high))
- {
- messageHandlers.removeElementAt(i);
- break;
- }
- }
- }
- }
-
- public void sendKexMessage(byte[] msg) throws IOException
- {
- synchronized (connectionSemaphore)
- {
- if (connectionClosed)
- {
- throw (IOException) new IOException("Sorry, this connection is closed.").initCause(reasonClosedCause);
- }
-
- flagKexOngoing = true;
-
- try
- {
- tc.sendMessage(msg);
- }
- catch (IOException e)
- {
- close(e, false);
- throw e;
- }
- }
- }
-
- public void kexFinished() throws IOException
- {
- synchronized (connectionSemaphore)
- {
- flagKexOngoing = false;
- connectionSemaphore.notifyAll();
- }
- }
-
- public void forceKeyExchange(CryptoWishList cwl, DHGexParameters dhgex) throws IOException
- {
- km.initiateKEX(cwl, dhgex);
- }
-
- public void changeRecvCipher(BlockCipher bc, MAC mac)
- {
- tc.changeRecvCipher(bc, mac);
- }
-
- public void changeSendCipher(BlockCipher bc, MAC mac)
- {
- tc.changeSendCipher(bc, mac);
- }
-
- /**
- * @param comp
- */
- public void changeRecvCompression(ICompressor comp) {
- tc.changeRecvCompression(comp);
- }
-
- /**
- * @param comp
- */
- public void changeSendCompression(ICompressor comp) {
- tc.changeSendCompression(comp);
- }
-
- /**
- *
- */
- public void startCompression() {
- tc.startCompression();
- }
-
- public void sendAsynchronousMessage(byte[] msg) throws IOException
- {
- synchronized (asynchronousQueue)
- {
- asynchronousQueue.addElement(msg);
-
- /* This limit should be flexible enough. We need this, otherwise the peer
- * can flood us with global requests (and other stuff where we have to reply
- * with an asynchronous message) and (if the server just sends data and does not
- * read what we send) this will probably put us in a low memory situation
- * (our send queue would grow and grow and...) */
-
- if (asynchronousQueue.size() > 100)
- throw new IOException("Error: the peer is not consuming our asynchronous replies.");
-
- /* Check if we have an asynchronous sending thread */
-
- if (asynchronousThread == null)
- {
- asynchronousThread = new AsynchronousWorker();
- asynchronousThread.setDaemon(true);
- asynchronousThread.start();
-
- /* The thread will stop after 2 seconds of inactivity (i.e., empty queue) */
- }
- }
- }
-
- public void setConnectionMonitors(Vector monitors)
- {
- synchronized (this)
- {
- connectionMonitors = (Vector) monitors.clone();
- }
- }
-
- public void sendMessage(byte[] msg) throws IOException
- {
- if (Thread.currentThread() == receiveThread)
- throw new IOException("Assertion error: sendMessage may never be invoked by the receiver thread!");
-
- synchronized (connectionSemaphore)
- {
- while (true)
- {
- if (connectionClosed)
- {
- throw (IOException) new IOException("Sorry, this connection is closed.")
- .initCause(reasonClosedCause);
- }
-
- if (flagKexOngoing == false)
- break;
-
- try
- {
- connectionSemaphore.wait();
- }
- catch (InterruptedException e)
- {
- }
- }
-
- try
- {
- tc.sendMessage(msg);
- }
- catch (IOException e)
- {
- close(e, false);
- throw e;
- }
- }
- }
-
- public void receiveLoop() throws IOException
- {
- byte[] msg = new byte[35000];
-
- while (true)
- {
- int msglen = tc.receiveMessage(msg, 0, msg.length);
-
- int type = msg[0] & 0xff;
-
- if (type == Packets.SSH_MSG_IGNORE)
- continue;
-
- if (type == Packets.SSH_MSG_DEBUG)
- {
- if (log.isEnabled())
- {
- TypesReader tr = new TypesReader(msg, 0, msglen);
- tr.readByte();
- tr.readBoolean();
- StringBuffer debugMessageBuffer = new StringBuffer();
- debugMessageBuffer.append(tr.readString("UTF-8"));
-
- for (int i = 0; i < debugMessageBuffer.length(); i++)
- {
- char c = debugMessageBuffer.charAt(i);
-
- if ((c >= 32) && (c <= 126))
- continue;
- debugMessageBuffer.setCharAt(i, '\uFFFD');
- }
-
- log.log(50, "DEBUG Message from remote: '" + debugMessageBuffer.toString() + "'");
- }
- continue;
- }
-
- if (type == Packets.SSH_MSG_UNIMPLEMENTED)
- {
- throw new IOException("Peer sent UNIMPLEMENTED message, that should not happen.");
- }
-
- if (type == Packets.SSH_MSG_DISCONNECT)
- {
- TypesReader tr = new TypesReader(msg, 0, msglen);
- tr.readByte();
- int reason_code = tr.readUINT32();
- StringBuffer reasonBuffer = new StringBuffer();
- reasonBuffer.append(tr.readString("UTF-8"));
-
- /*
- * Do not get fooled by servers that send abnormal long error
- * messages
- */
-
- if (reasonBuffer.length() > 255)
- {
- reasonBuffer.setLength(255);
- reasonBuffer.setCharAt(254, '.');
- reasonBuffer.setCharAt(253, '.');
- reasonBuffer.setCharAt(252, '.');
- }
-
- /*
- * Also, check that the server did not send charcaters that may
- * screw up the receiver -> restrict to reasonable US-ASCII
- * subset -> "printable characters" (ASCII 32 - 126). Replace
- * all others with 0xFFFD (UNICODE replacement character).
- */
-
- for (int i = 0; i < reasonBuffer.length(); i++)
- {
- char c = reasonBuffer.charAt(i);
-
- if ((c >= 32) && (c <= 126))
- continue;
- reasonBuffer.setCharAt(i, '\uFFFD');
- }
-
- throw new IOException("Peer sent DISCONNECT message (reason code " + reason_code + "): "
- + reasonBuffer.toString());
- }
-
- /*
- * Is it a KEX Packet?
- */
-
- if ((type == Packets.SSH_MSG_KEXINIT) || (type == Packets.SSH_MSG_NEWKEYS)
- || ((type >= 30) && (type <= 49)))
- {
- km.handleMessage(msg, msglen);
- continue;
- }
-
- if (type == Packets.SSH_MSG_USERAUTH_SUCCESS) {
- tc.startCompression();
- }
-
- MessageHandler mh = null;
-
- for (int i = 0; i < messageHandlers.size(); i++)
- {
- HandlerEntry he = messageHandlers.elementAt(i);
- if ((he.low <= type) && (type <= he.high))
- {
- mh = he.mh;
- break;
- }
- }
-
- if (mh == null)
- throw new IOException("Unexpected SSH message (type " + type + ")");
-
- mh.handleMessage(msg, msglen);
- }
- }
-}
+ +package com.trilead.ssh2.transport; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.Socket; +import java.net.UnknownHostException; +import java.security.SecureRandom; +import java.util.Vector; + +import com.trilead.ssh2.ConnectionInfo; +import com.trilead.ssh2.ConnectionMonitor; +import com.trilead.ssh2.DHGexParameters; +import com.trilead.ssh2.HTTPProxyData; +import com.trilead.ssh2.HTTPProxyException; +import com.trilead.ssh2.ProxyData; +import com.trilead.ssh2.ServerHostKeyVerifier; +import com.trilead.ssh2.compression.ICompressor; +import com.trilead.ssh2.crypto.Base64; +import com.trilead.ssh2.crypto.CryptoWishList; +import com.trilead.ssh2.crypto.cipher.BlockCipher; +import com.trilead.ssh2.crypto.digest.MAC; +import com.trilead.ssh2.log.Logger; +import com.trilead.ssh2.packets.PacketDisconnect; +import com.trilead.ssh2.packets.Packets; +import com.trilead.ssh2.packets.TypesReader; +import com.trilead.ssh2.util.Tokenizer; + + +/* + * Yes, the "standard" is a big mess. On one side, the say that arbitary channel + * packets are allowed during kex exchange, on the other side we need to blindly + * ignore the next _packet_ if the KEX guess was wrong. Where do we know from that + * the next packet is not a channel data packet? Yes, we could check if it is in + * the KEX range. But the standard says nothing about this. The OpenSSH guys + * block local "normal" traffic during KEX. That's fine - however, they assume + * that the other side is doing the same. During re-key, if they receive traffic + * other than KEX, they become horribly irritated and kill the connection. Since + * we are very likely going to communicate with OpenSSH servers, we have to play + * the same game - even though we could do better. + * + * btw: having stdout and stderr on the same channel, with a shared window, is + * also a VERY good idea... =( + */ + +/** + * TransportManager. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: TransportManager.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class TransportManager +{ + private static final Logger log = Logger.getLogger(TransportManager.class); + + class HandlerEntry + { + MessageHandler mh; + int low; + int high; + } + + private final Vector<byte[]> asynchronousQueue = new Vector<byte[]>(); + private Thread asynchronousThread = null; + + class AsynchronousWorker extends Thread + { + public void run() + { + while (true) + { + byte[] msg = null; + + synchronized (asynchronousQueue) + { + if (asynchronousQueue.size() == 0) + { + /* After the queue is empty for about 2 seconds, stop this thread */ + + try + { + asynchronousQueue.wait(2000); + } + catch (InterruptedException e) + { + /* OKOK, if somebody interrupts us, then we may die earlier. */ + } + + if (asynchronousQueue.size() == 0) + { + asynchronousThread = null; + return; + } + } + + msg = asynchronousQueue.remove(0); + } + + /* The following invocation may throw an IOException. + * There is no point in handling it - it simply means + * that the connection has a problem and we should stop + * sending asynchronously messages. We do not need to signal that + * we have exited (asynchronousThread = null): further + * messages in the queue cannot be sent by this or any + * other thread. + * Other threads will sooner or later (when receiving or + * sending the next message) get the same IOException and + * get to the same conclusion. + */ + + try + { + sendMessage(msg); + } + catch (IOException e) + { + return; + } + } + } + } + + String hostname; + int port; + final Socket sock = new Socket(); + + Object connectionSemaphore = new Object(); + + boolean flagKexOngoing = false; + boolean connectionClosed = false; + + Throwable reasonClosedCause = null; + + TransportConnection tc; + KexManager km; + + Vector<HandlerEntry> messageHandlers = new Vector<HandlerEntry>(); + + Thread receiveThread; + + Vector connectionMonitors = new Vector(); + boolean monitorsWereInformed = false; + + /** + * There were reports that there are JDKs which use + * the resolver even though one supplies a dotted IP + * address in the Socket constructor. That is why we + * try to generate the InetAdress "by hand". + * + * @param host + * @return the InetAddress + * @throws UnknownHostException + */ + private InetAddress createInetAddress(String host) throws UnknownHostException + { + /* Check if it is a dotted IP4 address */ + + InetAddress addr = parseIPv4Address(host); + + if (addr != null) + return addr; + + return InetAddress.getByName(host); + } + + private InetAddress parseIPv4Address(String host) throws UnknownHostException + { + if (host == null) + return null; + + String[] quad = Tokenizer.parseTokens(host, '.'); + + if ((quad == null) || (quad.length != 4)) + return null; + + byte[] addr = new byte[4]; + + for (int i = 0; i < 4; i++) + { + int part = 0; + + if ((quad[i].length() == 0) || (quad[i].length() > 3)) + return null; + + for (int k = 0; k < quad[i].length(); k++) + { + char c = quad[i].charAt(k); + + /* No, Character.isDigit is not the same */ + if ((c < '0') || (c > '9')) + return null; + + part = part * 10 + (c - '0'); + } + + if (part > 255) /* 300.1.2.3 is invalid =) */ + return null; + + addr[i] = (byte) part; + } + + return InetAddress.getByAddress(host, addr); + } + + public TransportManager(String host, int port) throws IOException + { + this.hostname = host; + this.port = port; + } + + public int getPacketOverheadEstimate() + { + return tc.getPacketOverheadEstimate(); + } + + public void setTcpNoDelay(boolean state) throws IOException + { + sock.setTcpNoDelay(state); + } + + public void setSoTimeout(int timeout) throws IOException + { + sock.setSoTimeout(timeout); + } + + public ConnectionInfo getConnectionInfo(int kexNumber) throws IOException + { + return km.getOrWaitForConnectionInfo(kexNumber); + } + + public Throwable getReasonClosedCause() + { + synchronized (connectionSemaphore) + { + return reasonClosedCause; + } + } + + public byte[] getSessionIdentifier() + { + return km.sessionId; + } + + public void close(Throwable cause, boolean useDisconnectPacket) + { + if (useDisconnectPacket == false) + { + /* OK, hard shutdown - do not aquire the semaphore, + * perhaps somebody is inside (and waits until the remote + * side is ready to accept new data). */ + + try + { + sock.close(); + } + catch (IOException ignore) + { + } + + /* OK, whoever tried to send data, should now agree that + * there is no point in further waiting =) + * It is safe now to aquire the semaphore. + */ + } + + synchronized (connectionSemaphore) + { + if (connectionClosed == false) + { + if (useDisconnectPacket == true) + { + try + { + byte[] msg = new PacketDisconnect(Packets.SSH_DISCONNECT_BY_APPLICATION, cause.getMessage(), "") + .getPayload(); + if (tc != null) + tc.sendMessage(msg); + } + catch (IOException ignore) + { + } + + try + { + sock.close(); + } + catch (IOException ignore) + { + } + } + + connectionClosed = true; + reasonClosedCause = cause; /* may be null */ + } + connectionSemaphore.notifyAll(); + } + + /* No check if we need to inform the monitors */ + + Vector monitors = null; + + synchronized (this) + { + /* Short term lock to protect "connectionMonitors" + * and "monitorsWereInformed" + * (they may be modified concurrently) + */ + + if (monitorsWereInformed == false) + { + monitorsWereInformed = true; + monitors = (Vector) connectionMonitors.clone(); + } + } + + if (monitors != null) + { + for (int i = 0; i < monitors.size(); i++) + { + try + { + ConnectionMonitor cmon = (ConnectionMonitor) monitors.elementAt(i); + cmon.connectionLost(reasonClosedCause); + } + catch (Exception ignore) + { + } + } + } + } + + private void establishConnection(ProxyData proxyData, int connectTimeout) throws IOException + { + /* See the comment for createInetAddress() */ + + if (proxyData == null) + { + InetAddress addr = createInetAddress(hostname); + sock.connect(new InetSocketAddress(addr, port), connectTimeout); + sock.setSoTimeout(0); + return; + } + + if (proxyData instanceof HTTPProxyData) + { + HTTPProxyData pd = (HTTPProxyData) proxyData; + + /* At the moment, we only support HTTP proxies */ + + InetAddress addr = createInetAddress(pd.proxyHost); + sock.connect(new InetSocketAddress(addr, pd.proxyPort), connectTimeout); + sock.setSoTimeout(0); + + /* OK, now tell the proxy where we actually want to connect to */ + + StringBuffer sb = new StringBuffer(); + + sb.append("CONNECT "); + sb.append(hostname); + sb.append(':'); + sb.append(port); + sb.append(" HTTP/1.0\r\n"); + + if ((pd.proxyUser != null) && (pd.proxyPass != null)) + { + String credentials = pd.proxyUser + ":" + pd.proxyPass; + char[] encoded = Base64.encode(credentials.getBytes("ISO-8859-1")); + sb.append("Proxy-Authorization: Basic "); + sb.append(encoded); + sb.append("\r\n"); + } + + if (pd.requestHeaderLines != null) + { + for (int i = 0; i < pd.requestHeaderLines.length; i++) + { + if (pd.requestHeaderLines[i] != null) + { + sb.append(pd.requestHeaderLines[i]); + sb.append("\r\n"); + } + } + } + + sb.append("\r\n"); + + OutputStream out = sock.getOutputStream(); + + out.write(sb.toString().getBytes("ISO-8859-1")); + out.flush(); + + /* Now parse the HTTP response */ + + byte[] buffer = new byte[1024]; + InputStream in = sock.getInputStream(); + + int len = ClientServerHello.readLineRN(in, buffer); + + String httpReponse = new String(buffer, 0, len, "ISO-8859-1"); + + if (httpReponse.startsWith("HTTP/") == false) + throw new IOException("The proxy did not send back a valid HTTP response."); + + /* "HTTP/1.X XYZ X" => 14 characters minimum */ + + if ((httpReponse.length() < 14) || (httpReponse.charAt(8) != ' ') || (httpReponse.charAt(12) != ' ')) + throw new IOException("The proxy did not send back a valid HTTP response."); + + int errorCode = 0; + + try + { + errorCode = Integer.parseInt(httpReponse.substring(9, 12)); + } + catch (NumberFormatException ignore) + { + throw new IOException("The proxy did not send back a valid HTTP response."); + } + + if ((errorCode < 0) || (errorCode > 999)) + throw new IOException("The proxy did not send back a valid HTTP response."); + + if (errorCode != 200) + { + throw new HTTPProxyException(httpReponse.substring(13), errorCode); + } + + /* OK, read until empty line */ + + while (true) + { + len = ClientServerHello.readLineRN(in, buffer); + if (len == 0) + break; + } + return; + } + + throw new IOException("Unsupported ProxyData"); + } + + public void initialize(CryptoWishList cwl, ServerHostKeyVerifier verifier, DHGexParameters dhgex, + int connectTimeout, SecureRandom rnd, ProxyData proxyData) throws IOException + { + /* First, establish the TCP connection to the SSH-2 server */ + + establishConnection(proxyData, connectTimeout); + + /* Parse the server line and say hello - important: this information is later needed for the + * key exchange (to stop man-in-the-middle attacks) - that is why we wrap it into an object + * for later use. + */ + + ClientServerHello csh = new ClientServerHello(sock.getInputStream(), sock.getOutputStream()); + + tc = new TransportConnection(sock.getInputStream(), sock.getOutputStream(), rnd); + + km = new KexManager(this, csh, cwl, hostname, port, verifier, rnd); + km.initiateKEX(cwl, dhgex); + + receiveThread = new Thread(new Runnable() + { + public void run() + { + try + { + receiveLoop(); + } + catch (IOException e) + { + close(e, false); + + if (log.isEnabled()) + log.log(10, "Receive thread: error in receiveLoop: " + e.getMessage()); + } + + if (log.isEnabled()) + log.log(50, "Receive thread: back from receiveLoop"); + + /* Tell all handlers that it is time to say goodbye */ + + if (km != null) + { + try + { + km.handleMessage(null, 0); + } + catch (IOException e) + { + } + } + + for (int i = 0; i < messageHandlers.size(); i++) + { + HandlerEntry he = messageHandlers.elementAt(i); + try + { + he.mh.handleMessage(null, 0); + } + catch (Exception ignore) + { + } + } + } + }); + + receiveThread.setDaemon(true); + receiveThread.start(); + } + + public void registerMessageHandler(MessageHandler mh, int low, int high) + { + HandlerEntry he = new HandlerEntry(); + he.mh = mh; + he.low = low; + he.high = high; + + synchronized (messageHandlers) + { + messageHandlers.addElement(he); + } + } + + public void removeMessageHandler(MessageHandler mh, int low, int high) + { + synchronized (messageHandlers) + { + for (int i = 0; i < messageHandlers.size(); i++) + { + HandlerEntry he = messageHandlers.elementAt(i); + if ((he.mh == mh) && (he.low == low) && (he.high == high)) + { + messageHandlers.removeElementAt(i); + break; + } + } + } + } + + public void sendKexMessage(byte[] msg) throws IOException + { + synchronized (connectionSemaphore) + { + if (connectionClosed) + { + throw (IOException) new IOException("Sorry, this connection is closed.").initCause(reasonClosedCause); + } + + flagKexOngoing = true; + + try + { + tc.sendMessage(msg); + } + catch (IOException e) + { + close(e, false); + throw e; + } + } + } + + public void kexFinished() throws IOException + { + synchronized (connectionSemaphore) + { + flagKexOngoing = false; + connectionSemaphore.notifyAll(); + } + } + + public void forceKeyExchange(CryptoWishList cwl, DHGexParameters dhgex) throws IOException + { + km.initiateKEX(cwl, dhgex); + } + + public void changeRecvCipher(BlockCipher bc, MAC mac) + { + tc.changeRecvCipher(bc, mac); + } + + public void changeSendCipher(BlockCipher bc, MAC mac) + { + tc.changeSendCipher(bc, mac); + } + + /** + * @param comp + */ + public void changeRecvCompression(ICompressor comp) { + tc.changeRecvCompression(comp); + } + + /** + * @param comp + */ + public void changeSendCompression(ICompressor comp) { + tc.changeSendCompression(comp); + } + + /** + * + */ + public void startCompression() { + tc.startCompression(); + } + + public void sendAsynchronousMessage(byte[] msg) throws IOException + { + synchronized (asynchronousQueue) + { + asynchronousQueue.addElement(msg); + + /* This limit should be flexible enough. We need this, otherwise the peer + * can flood us with global requests (and other stuff where we have to reply + * with an asynchronous message) and (if the server just sends data and does not + * read what we send) this will probably put us in a low memory situation + * (our send queue would grow and grow and...) */ + + if (asynchronousQueue.size() > 100) + throw new IOException("Error: the peer is not consuming our asynchronous replies."); + + /* Check if we have an asynchronous sending thread */ + + if (asynchronousThread == null) + { + asynchronousThread = new AsynchronousWorker(); + asynchronousThread.setDaemon(true); + asynchronousThread.start(); + + /* The thread will stop after 2 seconds of inactivity (i.e., empty queue) */ + } + } + } + + public void setConnectionMonitors(Vector monitors) + { + synchronized (this) + { + connectionMonitors = (Vector) monitors.clone(); + } + } + + public void sendMessage(byte[] msg) throws IOException + { + if (Thread.currentThread() == receiveThread) + throw new IOException("Assertion error: sendMessage may never be invoked by the receiver thread!"); + + synchronized (connectionSemaphore) + { + while (true) + { + if (connectionClosed) + { + throw (IOException) new IOException("Sorry, this connection is closed.") + .initCause(reasonClosedCause); + } + + if (flagKexOngoing == false) + break; + + try + { + connectionSemaphore.wait(); + } + catch (InterruptedException e) + { + } + } + + try + { + tc.sendMessage(msg); + } + catch (IOException e) + { + close(e, false); + throw e; + } + } + } + + public void receiveLoop() throws IOException + { + byte[] msg = new byte[35000]; + + while (true) + { + int msglen = tc.receiveMessage(msg, 0, msg.length); + + int type = msg[0] & 0xff; + + if (type == Packets.SSH_MSG_IGNORE) + continue; + + if (type == Packets.SSH_MSG_DEBUG) + { + if (log.isEnabled()) + { + TypesReader tr = new TypesReader(msg, 0, msglen); + tr.readByte(); + tr.readBoolean(); + StringBuffer debugMessageBuffer = new StringBuffer(); + debugMessageBuffer.append(tr.readString("UTF-8")); + + for (int i = 0; i < debugMessageBuffer.length(); i++) + { + char c = debugMessageBuffer.charAt(i); + + if ((c >= 32) && (c <= 126)) + continue; + debugMessageBuffer.setCharAt(i, '\uFFFD'); + } + + log.log(50, "DEBUG Message from remote: '" + debugMessageBuffer.toString() + "'"); + } + continue; + } + + if (type == Packets.SSH_MSG_UNIMPLEMENTED) + { + throw new IOException("Peer sent UNIMPLEMENTED message, that should not happen."); + } + + if (type == Packets.SSH_MSG_DISCONNECT) + { + TypesReader tr = new TypesReader(msg, 0, msglen); + tr.readByte(); + int reason_code = tr.readUINT32(); + StringBuffer reasonBuffer = new StringBuffer(); + reasonBuffer.append(tr.readString("UTF-8")); + + /* + * Do not get fooled by servers that send abnormal long error + * messages + */ + + if (reasonBuffer.length() > 255) + { + reasonBuffer.setLength(255); + reasonBuffer.setCharAt(254, '.'); + reasonBuffer.setCharAt(253, '.'); + reasonBuffer.setCharAt(252, '.'); + } + + /* + * Also, check that the server did not send charcaters that may + * screw up the receiver -> restrict to reasonable US-ASCII + * subset -> "printable characters" (ASCII 32 - 126). Replace + * all others with 0xFFFD (UNICODE replacement character). + */ + + for (int i = 0; i < reasonBuffer.length(); i++) + { + char c = reasonBuffer.charAt(i); + + if ((c >= 32) && (c <= 126)) + continue; + reasonBuffer.setCharAt(i, '\uFFFD'); + } + + throw new IOException("Peer sent DISCONNECT message (reason code " + reason_code + "): " + + reasonBuffer.toString()); + } + + /* + * Is it a KEX Packet? + */ + + if ((type == Packets.SSH_MSG_KEXINIT) || (type == Packets.SSH_MSG_NEWKEYS) + || ((type >= 30) && (type <= 49))) + { + km.handleMessage(msg, msglen); + continue; + } + + if (type == Packets.SSH_MSG_USERAUTH_SUCCESS) { + tc.startCompression(); + } + + MessageHandler mh = null; + + for (int i = 0; i < messageHandlers.size(); i++) + { + HandlerEntry he = messageHandlers.elementAt(i); + if ((he.low <= type) && (type <= he.high)) + { + mh = he.mh; + break; + } + } + + if (mh == null) + throw new IOException("Unexpected SSH message (type " + type + ")"); + + mh.handleMessage(msg, msglen); + } + } +} diff --git a/lib/src/main/java/com/trilead/ssh2/util/TimeoutService.java b/lib/src/main/java/com/trilead/ssh2/util/TimeoutService.java index b09ed07..3d52161 100644 --- a/lib/src/main/java/com/trilead/ssh2/util/TimeoutService.java +++ b/lib/src/main/java/com/trilead/ssh2/util/TimeoutService.java @@ -1,149 +1,149 @@ -
-package com.trilead.ssh2.util;
-
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.util.Collections;
-import java.util.LinkedList;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * TimeoutService (beta). Here you can register a timeout.
- * <p>
- * Implemented having large scale programs in mind: if you open many concurrent SSH connections
- * that rely on timeouts, then there will be only one timeout thread. Once all timeouts
- * have expired/are cancelled, the thread will (sooner or later) exit.
- * Only after new timeouts arrive a new thread (singleton) will be instantiated.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TimeoutService.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class TimeoutService
-{
- private static final Logger log = Logger.getLogger(TimeoutService.class);
-
- public static class TimeoutToken implements Comparable
- {
- private long runTime;
- private Runnable handler;
-
- private TimeoutToken(long runTime, Runnable handler)
- {
- this.runTime = runTime;
- this.handler = handler;
- }
-
- public int compareTo(Object o)
- {
- TimeoutToken t = (TimeoutToken) o;
- if (runTime > t.runTime)
- return 1;
- if (runTime == t.runTime)
- return 0;
- return -1;
- }
- }
-
- private static class TimeoutThread extends Thread
- {
- public void run()
- {
- synchronized (todolist)
- {
- while (true)
- {
- if (todolist.size() == 0)
- {
- timeoutThread = null;
- return;
- }
-
- long now = System.currentTimeMillis();
-
- TimeoutToken tt = (TimeoutToken) todolist.getFirst();
-
- if (tt.runTime > now)
- {
- /* Not ready yet, sleep a little bit */
-
- try
- {
- todolist.wait(tt.runTime - now);
- }
- catch (InterruptedException e)
- {
- }
-
- /* We cannot simply go on, since it could be that the token
- * was removed (cancelled) or another one has been inserted in
- * the meantime.
- */
-
- continue;
- }
-
- todolist.removeFirst();
-
- try
- {
- tt.handler.run();
- }
- catch (Exception e)
- {
- StringWriter sw = new StringWriter();
- e.printStackTrace(new PrintWriter(sw));
- log.log(20, "Exeception in Timeout handler:" + e.getMessage() + "(" + sw.toString() + ")");
- }
- }
- }
- }
- }
-
- /* The list object is also used for locking purposes */
- private static final LinkedList todolist = new LinkedList();
-
- private static Thread timeoutThread = null;
-
- /**
- * It is assumed that the passed handler will not execute for a long time.
- *
- * @param runTime
- * @param handler
- * @return a TimeoutToken that can be used to cancel the timeout.
- */
- public static final TimeoutToken addTimeoutHandler(long runTime, Runnable handler)
- {
- TimeoutToken token = new TimeoutToken(runTime, handler);
-
- synchronized (todolist)
- {
- todolist.add(token);
- Collections.sort(todolist);
-
- if (timeoutThread != null)
- timeoutThread.interrupt();
- else
- {
- timeoutThread = new TimeoutThread();
- timeoutThread.setDaemon(true);
- timeoutThread.start();
- }
- }
-
- return token;
- }
-
- public static final void cancelTimeoutHandler(TimeoutToken token)
- {
- synchronized (todolist)
- {
- todolist.remove(token);
-
- if (timeoutThread != null)
- timeoutThread.interrupt();
- }
- }
-
-}
+ +package com.trilead.ssh2.util; + +import java.io.PrintWriter; +import java.io.StringWriter; +import java.util.Collections; +import java.util.LinkedList; + +import com.trilead.ssh2.log.Logger; + + +/** + * TimeoutService (beta). Here you can register a timeout. + * <p> + * Implemented having large scale programs in mind: if you open many concurrent SSH connections + * that rely on timeouts, then there will be only one timeout thread. Once all timeouts + * have expired/are cancelled, the thread will (sooner or later) exit. + * Only after new timeouts arrive a new thread (singleton) will be instantiated. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: TimeoutService.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class TimeoutService +{ + private static final Logger log = Logger.getLogger(TimeoutService.class); + + public static class TimeoutToken implements Comparable + { + private long runTime; + private Runnable handler; + + private TimeoutToken(long runTime, Runnable handler) + { + this.runTime = runTime; + this.handler = handler; + } + + public int compareTo(Object o) + { + TimeoutToken t = (TimeoutToken) o; + if (runTime > t.runTime) + return 1; + if (runTime == t.runTime) + return 0; + return -1; + } + } + + private static class TimeoutThread extends Thread + { + public void run() + { + synchronized (todolist) + { + while (true) + { + if (todolist.size() == 0) + { + timeoutThread = null; + return; + } + + long now = System.currentTimeMillis(); + + TimeoutToken tt = (TimeoutToken) todolist.getFirst(); + + if (tt.runTime > now) + { + /* Not ready yet, sleep a little bit */ + + try + { + todolist.wait(tt.runTime - now); + } + catch (InterruptedException e) + { + } + + /* We cannot simply go on, since it could be that the token + * was removed (cancelled) or another one has been inserted in + * the meantime. + */ + + continue; + } + + todolist.removeFirst(); + + try + { + tt.handler.run(); + } + catch (Exception e) + { + StringWriter sw = new StringWriter(); + e.printStackTrace(new PrintWriter(sw)); + log.log(20, "Exeception in Timeout handler:" + e.getMessage() + "(" + sw.toString() + ")"); + } + } + } + } + } + + /* The list object is also used for locking purposes */ + private static final LinkedList todolist = new LinkedList(); + + private static Thread timeoutThread = null; + + /** + * It is assumed that the passed handler will not execute for a long time. + * + * @param runTime + * @param handler + * @return a TimeoutToken that can be used to cancel the timeout. + */ + public static final TimeoutToken addTimeoutHandler(long runTime, Runnable handler) + { + TimeoutToken token = new TimeoutToken(runTime, handler); + + synchronized (todolist) + { + todolist.add(token); + Collections.sort(todolist); + + if (timeoutThread != null) + timeoutThread.interrupt(); + else + { + timeoutThread = new TimeoutThread(); + timeoutThread.setDaemon(true); + timeoutThread.start(); + } + } + + return token; + } + + public static final void cancelTimeoutHandler(TimeoutToken token) + { + synchronized (todolist) + { + todolist.remove(token); + + if (timeoutThread != null) + timeoutThread.interrupt(); + } + } + +} diff --git a/lib/src/main/java/com/trilead/ssh2/util/Tokenizer.java b/lib/src/main/java/com/trilead/ssh2/util/Tokenizer.java index ff3fcba..dfd480b 100644 --- a/lib/src/main/java/com/trilead/ssh2/util/Tokenizer.java +++ b/lib/src/main/java/com/trilead/ssh2/util/Tokenizer.java @@ -1,51 +1,51 @@ -
-package com.trilead.ssh2.util;
-
-/**
- * Tokenizer. Why? Because StringTokenizer is not available in J2ME.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Tokenizer.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class Tokenizer
-{
- /**
- * Exists because StringTokenizer is not available in J2ME.
- * Returns an array with at least 1 entry.
- *
- * @param source must be non-null
- * @param delimiter
- * @return an array of Strings
- */
- public static String[] parseTokens(String source, char delimiter)
- {
- int numtoken = 1;
-
- for (int i = 0; i < source.length(); i++)
- {
- if (source.charAt(i) == delimiter)
- numtoken++;
- }
-
- String list[] = new String[numtoken];
- int nextfield = 0;
-
- for (int i = 0; i < numtoken; i++)
- {
- if (nextfield >= source.length())
- {
- list[i] = "";
- }
- else
- {
- int idx = source.indexOf(delimiter, nextfield);
- if (idx == -1)
- idx = source.length();
- list[i] = source.substring(nextfield, idx);
- nextfield = idx + 1;
- }
- }
-
- return list;
- }
-}
+ +package com.trilead.ssh2.util; + +/** + * Tokenizer. Why? Because StringTokenizer is not available in J2ME. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: Tokenizer.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class Tokenizer +{ + /** + * Exists because StringTokenizer is not available in J2ME. + * Returns an array with at least 1 entry. + * + * @param source must be non-null + * @param delimiter + * @return an array of Strings + */ + public static String[] parseTokens(String source, char delimiter) + { + int numtoken = 1; + + for (int i = 0; i < source.length(); i++) + { + if (source.charAt(i) == delimiter) + numtoken++; + } + + String list[] = new String[numtoken]; + int nextfield = 0; + + for (int i = 0; i < numtoken; i++) + { + if (nextfield >= source.length()) + { + list[i] = ""; + } + else + { + int idx = source.indexOf(delimiter, nextfield); + if (idx == -1) + idx = source.length(); + list[i] = source.substring(nextfield, idx); + nextfield = idx + 1; + } + } + + return list; + } +} |