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package net.sourceforge.jsocks;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
Abstract class which describes SOCKS4/5 response/request.
*/
public abstract class ProxyMessage{
/** Host as an IP address */
public InetAddress ip=null;
/** SOCKS version, or version of the response for SOCKS4*/
public int version;
/** Port field of the request/response*/
public int port;
/** Request/response code as an int*/
public int command;
/** Host as string.*/
public String host=null;
/** User field for SOCKS4 request messages*/
public String user=null;
ProxyMessage(int command,InetAddress ip,int port){
this.command = command;
this.ip = ip;
this.port = port;
}
ProxyMessage(){
}
/**
Initialises Message from the stream. Reads server response from
given stream.
@param in Input stream to read response from.
@throws SocksException If server response code is not SOCKS_SUCCESS(0), or
if any error with protocol occurs.
@throws IOException If any error happens with I/O.
*/
public abstract void read(InputStream in)
throws SocksException,
IOException;
/**
Initialises Message from the stream. Reads server response or client
request from given stream.
@param in Input stream to read response from.
@param clinetMode If true read server response, else read client request.
@throws SocksException If server response code is not SOCKS_SUCCESS(0) and
reading in client mode, or if any error with protocol occurs.
@throws IOException If any error happens with I/O.
*/
public abstract void read(InputStream in,boolean client_mode)
throws SocksException,
IOException;
/**
Writes the message to the stream.
@param out Output stream to which message should be written.
*/
public abstract void write(OutputStream out)throws SocksException,
IOException;
/**
Get the Address field of this message as InetAddress object.
@return Host address or null, if one can't be determined.
*/
public InetAddress getInetAddress() throws UnknownHostException{
return ip;
}
/**
Get string representaion of this message.
@return string representation of this message.
*/
public String toString(){
return
"Proxy Message:\n"+
"Version:"+ version+"\n"+
"Command:"+ command+"\n"+
"IP: "+ ip+"\n"+
"Port: "+ port+"\n"+
"User: "+ user+"\n" ;
}
//Package methods
//////////////////
static final String bytes2IPV4(byte[] addr,int offset){
String hostName = ""+(addr[offset] & 0xFF);
for(int i = offset+1;i<offset+4;++i)
hostName+="."+(addr[i] & 0xFF);
return hostName;
}
static final String bytes2IPV6(byte[] addr,int offset){
//Have no idea how they look like!
return null;
}
}
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