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/*
* Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.service;
import android.app.IntentService;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import org.spongycastle.bcpg.sig.KeyFlags;
import org.spongycastle.openpgp.PGPKeyRing;
import org.spongycastle.openpgp.PGPObjectFactory;
import org.spongycastle.openpgp.PGPPublicKey;
import org.spongycastle.openpgp.PGPPublicKeyRing;
import org.spongycastle.openpgp.PGPSecretKey;
import org.spongycastle.openpgp.PGPSecretKeyRing;
import org.spongycastle.openpgp.PGPUtil;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.helper.FileHelper;
import org.sufficientlysecure.keychain.helper.OtherHelper;
import org.sufficientlysecure.keychain.helper.Preferences;
import org.sufficientlysecure.keychain.pgp.PgpConversionHelper;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerify;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyResult;
import org.sufficientlysecure.keychain.pgp.PgpHelper;
import org.sufficientlysecure.keychain.pgp.PgpImportExport;
import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
import org.sufficientlysecure.keychain.pgp.PgpKeyOperation;
import org.sufficientlysecure.keychain.pgp.PgpSignEncrypt;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralMsgIdException;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.adapter.ImportKeysListEntry;
import org.sufficientlysecure.keychain.util.HkpKeyServer;
import org.sufficientlysecure.keychain.util.InputData;
import org.sufficientlysecure.keychain.util.KeychainServiceListener;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.ProgressDialogUpdater;
import org.sufficientlysecure.keychain.util.ProgressScaler;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
/**
* This Service contains all important long lasting operations for APG. It receives Intents with
* data from the activities or other apps, queues these intents, executes them, and stops itself
* after doing them.
*/
public class KeychainIntentService extends IntentService
implements ProgressDialogUpdater, KeychainServiceListener {
/* extras that can be given by intent */
public static final String EXTRA_MESSENGER = "messenger";
public static final String EXTRA_DATA = "data";
/* possible actions */
public static final String ACTION_ENCRYPT_SIGN = Constants.INTENT_PREFIX + "ENCRYPT_SIGN";
public static final String ACTION_DECRYPT_VERIFY = Constants.INTENT_PREFIX + "DECRYPT_VERIFY";
public static final String ACTION_SAVE_KEYRING = Constants.INTENT_PREFIX + "SAVE_KEYRING";
public static final String ACTION_GENERATE_KEY = Constants.INTENT_PREFIX + "GENERATE_KEY";
public static final String ACTION_GENERATE_DEFAULT_RSA_KEYS = Constants.INTENT_PREFIX
+ "GENERATE_DEFAULT_RSA_KEYS";
public static final String ACTION_DELETE_FILE_SECURELY = Constants.INTENT_PREFIX
+ "DELETE_FILE_SECURELY";
public static final String ACTION_IMPORT_KEYRING = Constants.INTENT_PREFIX + "IMPORT_KEYRING";
public static final String ACTION_EXPORT_KEYRING = Constants.INTENT_PREFIX + "EXPORT_KEYRING";
public static final String ACTION_UPLOAD_KEYRING = Constants.INTENT_PREFIX + "UPLOAD_KEYRING";
public static final String ACTION_DOWNLOAD_AND_IMPORT_KEYS = Constants.INTENT_PREFIX + "QUERY_KEYRING";
public static final String ACTION_CERTIFY_KEYRING = Constants.INTENT_PREFIX + "SIGN_KEYRING";
/* keys for data bundle */
// encrypt, decrypt, import export
public static final String TARGET = "target";
// possible targets:
public static final int TARGET_BYTES = 1;
public static final int TARGET_URI = 2;
// encrypt
public static final String ENCRYPT_SIGNATURE_KEY_ID = "secret_key_id";
public static final String ENCRYPT_USE_ASCII_ARMOR = "use_ascii_armor";
public static final String ENCRYPT_ENCRYPTION_KEYS_IDS = "encryption_keys_ids";
public static final String ENCRYPT_COMPRESSION_ID = "compression_id";
public static final String ENCRYPT_MESSAGE_BYTES = "message_bytes";
public static final String ENCRYPT_INPUT_FILE = "input_file";
public static final String ENCRYPT_OUTPUT_FILE = "output_file";
public static final String ENCRYPT_SYMMETRIC_PASSPHRASE = "passphrase";
// decrypt/verify
public static final String DECRYPT_CIPHERTEXT_BYTES = "ciphertext_bytes";
public static final String DECRYPT_PASSPHRASE = "passphrase";
// save keyring
public static final String SAVE_KEYRING_PARCEL = "save_parcel";
public static final String SAVE_KEYRING_CAN_SIGN = "can_sign";
// generate key
public static final String GENERATE_KEY_ALGORITHM = "algorithm";
public static final String GENERATE_KEY_KEY_SIZE = "key_size";
public static final String GENERATE_KEY_SYMMETRIC_PASSPHRASE = "passphrase";
public static final String GENERATE_KEY_MASTER_KEY = "master_key";
// delete file securely
public static final String DELETE_FILE = "deleteFile";
// import key
public static final String IMPORT_KEY_LIST = "import_key_list";
// export key
public static final String EXPORT_OUTPUT_STREAM = "export_output_stream";
public static final String EXPORT_FILENAME = "export_filename";
public static final String EXPORT_SECRET = "export_secret";
public static final String EXPORT_ALL = "export_all";
public static final String EXPORT_KEY_RING_MASTER_KEY_ID = "export_key_ring_id";
// upload key
public static final String UPLOAD_KEY_SERVER = "upload_key_server";
// query key
public static final String DOWNLOAD_KEY_SERVER = "query_key_server";
public static final String DOWNLOAD_KEY_LIST = "query_key_id";
// sign key
public static final String CERTIFY_KEY_MASTER_KEY_ID = "sign_key_master_key_id";
public static final String CERTIFY_KEY_PUB_KEY_ID = "sign_key_pub_key_id";
public static final String CERTIFY_KEY_UIDS = "sign_key_uids";
/*
* possible data keys as result send over messenger
*/
// keys
public static final String RESULT_NEW_KEY = "new_key";
public static final String RESULT_KEY_USAGES = "new_key_usages";
// encrypt
public static final String RESULT_BYTES = "encrypted_data";
// decrypt/verify
public static final String RESULT_DECRYPTED_BYTES = "decrypted_data";
public static final String RESULT_DECRYPT_VERIFY_RESULT = "signature";
// import
public static final String RESULT_IMPORT_ADDED = "added";
public static final String RESULT_IMPORT_UPDATED = "updated";
public static final String RESULT_IMPORT_BAD = "bad";
// export
public static final String RESULT_EXPORT = "exported";
Messenger mMessenger;
private boolean mIsCanceled;
public KeychainIntentService() {
super("KeychainIntentService");
}
@Override
public void onDestroy() {
super.onDestroy();
this.mIsCanceled = true;
}
/**
* The IntentService calls this method from the default worker thread with the intent that
* started the service. When this method returns, IntentService stops the service, as
* appropriate.
*/
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
if (extras == null) {
Log.e(Constants.TAG, "Extras bundle is null!");
return;
}
if (!(extras.containsKey(EXTRA_MESSENGER) || extras.containsKey(EXTRA_DATA) || (intent
.getAction() == null))) {
Log.e(Constants.TAG,
"Extra bundle must contain a messenger, a data bundle, and an action!");
return;
}
Uri dataUri = intent.getData();
mMessenger = (Messenger) extras.get(EXTRA_MESSENGER);
Bundle data = extras.getBundle(EXTRA_DATA);
OtherHelper.logDebugBundle(data, "EXTRA_DATA");
String action = intent.getAction();
// executeServiceMethod action from extra bundle
if (ACTION_ENCRYPT_SIGN.equals(action)) {
try {
/* Input */
int target = data.getInt(TARGET);
long signatureKeyId = data.getLong(ENCRYPT_SIGNATURE_KEY_ID);
String symmetricPassphrase = data.getString(ENCRYPT_SYMMETRIC_PASSPHRASE);
boolean useAsciiArmor = data.getBoolean(ENCRYPT_USE_ASCII_ARMOR);
long encryptionKeyIds[] = data.getLongArray(ENCRYPT_ENCRYPTION_KEYS_IDS);
int compressionId = data.getInt(ENCRYPT_COMPRESSION_ID);
InputStream inStream;
long inLength;
InputData inputData;
OutputStream outStream;
// String streamFilename = null;
switch (target) {
case TARGET_BYTES: /* encrypting bytes directly */
byte[] bytes = data.getByteArray(ENCRYPT_MESSAGE_BYTES);
inStream = new ByteArrayInputStream(bytes);
inLength = bytes.length;
inputData = new InputData(inStream, inLength);
outStream = new ByteArrayOutputStream();
break;
case TARGET_URI: /* encrypting file */
String inputFile = data.getString(ENCRYPT_INPUT_FILE);
String outputFile = data.getString(ENCRYPT_OUTPUT_FILE);
// check if storage is ready
if (!FileHelper.isStorageMounted(inputFile)
|| !FileHelper.isStorageMounted(outputFile)) {
throw new PgpGeneralException(
getString(R.string.error_external_storage_not_ready));
}
inStream = new FileInputStream(inputFile);
File file = new File(inputFile);
inLength = file.length();
inputData = new InputData(inStream, inLength);
outStream = new FileOutputStream(outputFile);
break;
// TODO: not used currently
// case TARGET_STREAM: /* Encrypting stream from content uri */
// Uri providerUri = (Uri) data.getParcelable(ENCRYPT_PROVIDER_URI);
//
// // InputStream
// InputStream in = getContentResolver().openInputStream(providerUri);
// inLength = PgpHelper.getLengthOfStream(in);
// inputData = new InputData(in, inLength);
//
// // OutputStream
// try {
// while (true) {
// streamFilename = PgpHelper.generateRandomFilename(32);
// if (streamFilename == null) {
// throw new PgpGeneralException("couldn't generate random file name");
// }
// openFileInput(streamFilename).close();
// }
// } catch (FileNotFoundException e) {
// // found a name that isn't used yet
// }
// outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
//
// break;
default:
throw new PgpGeneralException("No target choosen!");
}
/* Operation */
PgpSignEncrypt.Builder builder =
new PgpSignEncrypt.Builder(
new ProviderHelper(this),
PgpHelper.getFullVersion(this),
inputData, outStream);
builder.progress(this);
builder.enableAsciiArmorOutput(useAsciiArmor)
.compressionId(compressionId)
.symmetricEncryptionAlgorithm(
Preferences.getPreferences(this).getDefaultEncryptionAlgorithm())
.signatureForceV3(Preferences.getPreferences(this).getForceV3Signatures())
.encryptionMasterKeyIds(encryptionKeyIds)
.symmetricPassphrase(symmetricPassphrase)
.signatureMasterKeyId(signatureKeyId)
.signatureHashAlgorithm(
Preferences.getPreferences(this).getDefaultHashAlgorithm())
.signaturePassphrase(
PassphraseCacheService.getCachedPassphrase(this, signatureKeyId));
builder.build().execute();
outStream.close();
/* Output */
Bundle resultData = new Bundle();
switch (target) {
case TARGET_BYTES:
byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
resultData.putByteArray(RESULT_BYTES, output);
break;
case TARGET_URI:
// nothing, file was written, just send okay
break;
// case TARGET_STREAM:
// String uri = DataStream.buildDataStreamUri(streamFilename).toString();
// resultData.putString(RESULT_URI, uri);
//
// break;
}
OtherHelper.logDebugBundle(resultData, "resultData");
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_DECRYPT_VERIFY.equals(action)) {
try {
/* Input */
int target = data.getInt(TARGET);
byte[] bytes = data.getByteArray(DECRYPT_CIPHERTEXT_BYTES);
String passphrase = data.getString(DECRYPT_PASSPHRASE);
InputStream inStream;
long inLength;
InputData inputData;
OutputStream outStream;
String streamFilename = null;
switch (target) {
case TARGET_BYTES: /* decrypting bytes directly */
inStream = new ByteArrayInputStream(bytes);
inLength = bytes.length;
inputData = new InputData(inStream, inLength);
outStream = new ByteArrayOutputStream();
break;
case TARGET_URI: /* decrypting file */
String inputFile = data.getString(ENCRYPT_INPUT_FILE);
String outputFile = data.getString(ENCRYPT_OUTPUT_FILE);
// check if storage is ready
if (!FileHelper.isStorageMounted(inputFile)
|| !FileHelper.isStorageMounted(outputFile)) {
throw new PgpGeneralException(
getString(R.string.error_external_storage_not_ready));
}
// InputStream
inLength = -1;
inStream = new FileInputStream(inputFile);
File file = new File(inputFile);
inLength = file.length();
inputData = new InputData(inStream, inLength);
// OutputStream
outStream = new FileOutputStream(outputFile);
break;
// TODO: not used, maybe contains code useful for new decrypt method for files?
// case TARGET_STREAM: /* decrypting stream from content uri */
// Uri providerUri = (Uri) data.getParcelable(ENCRYPT_PROVIDER_URI);
//
// // InputStream
// InputStream in = getContentResolver().openInputStream(providerUri);
// inLength = PgpHelper.getLengthOfStream(in);
// inputData = new InputData(in, inLength);
//
// // OutputStream
// try {
// while (true) {
// streamFilename = PgpHelper.generateRandomFilename(32);
// if (streamFilename == null) {
// throw new PgpGeneralException("couldn't generate random file name");
// }
// openFileInput(streamFilename).close();
// }
// } catch (FileNotFoundException e) {
// // found a name that isn't used yet
// }
// outStream = openFileOutput(streamFilename, Context.MODE_PRIVATE);
//
// break;
default:
throw new PgpGeneralException("No target choosen!");
}
/* Operation */
Bundle resultData = new Bundle();
// verifyText and decrypt returning additional resultData values for the
// verification of signatures
PgpDecryptVerify.Builder builder = new PgpDecryptVerify.Builder(
new ProviderHelper(this),
new PgpDecryptVerify.PassphraseCache() {
@Override
public String getCachedPassphrase(long masterKeyId) {
return PassphraseCacheService.getCachedPassphrase(
KeychainIntentService.this, masterKeyId);
}
},
inputData, outStream);
builder.progressDialogUpdater(this);
builder.allowSymmetricDecryption(true)
.passphrase(passphrase);
PgpDecryptVerifyResult decryptVerifyResult = builder.build().execute();
outStream.close();
resultData.putParcelable(RESULT_DECRYPT_VERIFY_RESULT, decryptVerifyResult);
/* Output */
switch (target) {
case TARGET_BYTES:
byte output[] = ((ByteArrayOutputStream) outStream).toByteArray();
resultData.putByteArray(RESULT_DECRYPTED_BYTES, output);
break;
case TARGET_URI:
// nothing, file was written, just send okay and verification bundle
break;
// case TARGET_STREAM:
// String uri = DataStream.buildDataStreamUri(streamFilename).toString();
// resultData.putString(RESULT_URI, uri);
//
// break;
}
OtherHelper.logDebugBundle(resultData, "resultData");
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_SAVE_KEYRING.equals(action)) {
try {
/* Input */
SaveKeyringParcel saveParcel = data.getParcelable(SAVE_KEYRING_PARCEL);
String oldPassphrase = saveParcel.oldPassphrase;
String newPassphrase = saveParcel.newPassphrase;
boolean canSign = true;
if (data.containsKey(SAVE_KEYRING_CAN_SIGN)) {
canSign = data.getBoolean(SAVE_KEYRING_CAN_SIGN);
}
if (newPassphrase == null) {
newPassphrase = oldPassphrase;
}
long masterKeyId = saveParcel.keys.get(0).getKeyID();
/* Operation */
ProviderHelper providerHelper = new ProviderHelper(this);
if (!canSign) {
PgpKeyOperation keyOperations = new PgpKeyOperation(new ProgressScaler(this, 0, 50, 100));
PGPSecretKeyRing keyRing = providerHelper.getPGPSecretKeyRing(masterKeyId);
keyRing = keyOperations.changeSecretKeyPassphrase(keyRing,
oldPassphrase, newPassphrase);
setProgress(R.string.progress_saving_key_ring, 50, 100);
providerHelper.saveKeyRing(keyRing);
setProgress(R.string.progress_done, 100, 100);
} else {
PgpKeyOperation keyOperations = new PgpKeyOperation(new ProgressScaler(this, 0, 90, 100));
PgpKeyOperation.Pair<PGPSecretKeyRing, PGPPublicKeyRing> pair;
try {
PGPSecretKeyRing privkey = providerHelper.getPGPSecretKeyRing(masterKeyId);
PGPPublicKeyRing pubkey = providerHelper.getPGPPublicKeyRing(masterKeyId);
pair = keyOperations.buildSecretKey(privkey, pubkey, saveParcel); // edit existing
} catch (ProviderHelper.NotFoundException e) {
pair = keyOperations.buildNewSecretKey(saveParcel); //new Keyring
}
setProgress(R.string.progress_saving_key_ring, 90, 100);
// save the pair
providerHelper.saveKeyRing(pair.second, pair.first);
setProgress(R.string.progress_done, 100, 100);
}
PassphraseCacheService.addCachedPassphrase(this, masterKeyId, newPassphrase);
/* Output */
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_GENERATE_KEY.equals(action)) {
try {
/* Input */
int algorithm = data.getInt(GENERATE_KEY_ALGORITHM);
String passphrase = data.getString(GENERATE_KEY_SYMMETRIC_PASSPHRASE);
int keysize = data.getInt(GENERATE_KEY_KEY_SIZE);
boolean masterKey = data.getBoolean(GENERATE_KEY_MASTER_KEY);
/* Operation */
PgpKeyOperation keyOperations = new PgpKeyOperation(new ProgressScaler(this, 0, 100, 100));
PGPSecretKey newKey = keyOperations.createKey(algorithm, keysize,
passphrase, masterKey);
/* Output */
Bundle resultData = new Bundle();
resultData.putByteArray(RESULT_NEW_KEY,
PgpConversionHelper.PGPSecretKeyToBytes(newKey));
OtherHelper.logDebugBundle(resultData, "resultData");
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_GENERATE_DEFAULT_RSA_KEYS.equals(action)) {
// generate one RSA 4096 key for signing and one subkey for encrypting!
try {
/* Input */
String passphrase = data.getString(GENERATE_KEY_SYMMETRIC_PASSPHRASE);
ArrayList<PGPSecretKey> newKeys = new ArrayList<PGPSecretKey>();
ArrayList<Integer> keyUsageList = new ArrayList<Integer>();
/* Operation */
int keysTotal = 3;
int keysCreated = 0;
setProgress(
getApplicationContext().getResources().
getQuantityString(R.plurals.progress_generating, keysTotal),
keysCreated,
keysTotal);
PgpKeyOperation keyOperations = new PgpKeyOperation(new ProgressScaler(this, 0, 100, 100));
PGPSecretKey masterKey = keyOperations.createKey(Id.choice.algorithm.rsa,
4096, passphrase, true);
newKeys.add(masterKey);
keyUsageList.add(KeyFlags.CERTIFY_OTHER);
keysCreated++;
setProgress(keysCreated, keysTotal);
PGPSecretKey subKey = keyOperations.createKey(Id.choice.algorithm.rsa,
4096, passphrase, false);
newKeys.add(subKey);
keyUsageList.add(KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE);
keysCreated++;
setProgress(keysCreated, keysTotal);
subKey = keyOperations.createKey(Id.choice.algorithm.rsa,
4096, passphrase, false);
newKeys.add(subKey);
keyUsageList.add(KeyFlags.SIGN_DATA);
keysCreated++;
setProgress(keysCreated, keysTotal);
// TODO: default to one master for cert, one sub for encrypt and one sub
// for sign
/* Output */
Bundle resultData = new Bundle();
resultData.putByteArray(RESULT_NEW_KEY,
PgpConversionHelper.PGPSecretKeyArrayListToBytes(newKeys));
resultData.putIntegerArrayList(RESULT_KEY_USAGES, keyUsageList);
OtherHelper.logDebugBundle(resultData, "resultData");
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_DELETE_FILE_SECURELY.equals(action)) {
try {
/* Input */
String deleteFile = data.getString(DELETE_FILE);
/* Operation */
try {
PgpHelper.deleteFileSecurely(this, this, new File(deleteFile));
} catch (FileNotFoundException e) {
throw new PgpGeneralException(
getString(R.string.error_file_not_found, deleteFile));
} catch (IOException e) {
throw new PgpGeneralException(getString(R.string.error_file_delete_failed,
deleteFile));
}
/* Output */
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_IMPORT_KEYRING.equals(action)) {
try {
List<ImportKeysListEntry> entries = data.getParcelableArrayList(IMPORT_KEY_LIST);
Bundle resultData = new Bundle();
PgpImportExport pgpImportExport = new PgpImportExport(this, this);
resultData = pgpImportExport.importKeyRings(entries);
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_EXPORT_KEYRING.equals(action)) {
try {
boolean exportSecret = data.getBoolean(EXPORT_SECRET, false);
long[] masterKeyIds = data.getLongArray(EXPORT_KEY_RING_MASTER_KEY_ID);
String outputFile = data.getString(EXPORT_FILENAME);
// If not exporting all keys get the masterKeyIds of the keys to export from the intent
boolean exportAll = data.getBoolean(EXPORT_ALL);
// check if storage is ready
if (!FileHelper.isStorageMounted(outputFile)) {
throw new PgpGeneralException(getString(R.string.error_external_storage_not_ready));
}
ArrayList<Long> publicMasterKeyIds = new ArrayList<Long>();
ArrayList<Long> secretMasterKeyIds = new ArrayList<Long>();
String selection = null;
if (!exportAll) {
selection = KeychainDatabase.Tables.KEYS + "." + KeyRings.MASTER_KEY_ID + " IN( ";
for (long l : masterKeyIds) {
selection += Long.toString(l) + ",";
}
selection = selection.substring(0, selection.length() - 1) + " )";
}
Cursor cursor = getContentResolver().query(KeyRings.buildUnifiedKeyRingsUri(),
new String[]{KeyRings.MASTER_KEY_ID, KeyRings.HAS_SECRET},
selection, null, null);
try {
cursor.moveToFirst();
do {
// export public either way
publicMasterKeyIds.add(cursor.getLong(0));
// add secret if available (and requested)
if (exportSecret && cursor.getInt(1) != 0)
secretMasterKeyIds.add(cursor.getLong(0));
} while (cursor.moveToNext());
} finally {
cursor.close();
}
PgpImportExport pgpImportExport = new PgpImportExport(this, this, this);
Bundle resultData = pgpImportExport
.exportKeyRings(publicMasterKeyIds, secretMasterKeyIds,
new FileOutputStream(outputFile));
if (mIsCanceled) {
boolean isDeleted = new File(outputFile).delete();
}
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_UPLOAD_KEYRING.equals(action)) {
try {
/* Input */
String keyServer = data.getString(UPLOAD_KEY_SERVER);
// and dataUri!
/* Operation */
HkpKeyServer server = new HkpKeyServer(keyServer);
ProviderHelper providerHelper = new ProviderHelper(this);
PGPPublicKeyRing keyring = (PGPPublicKeyRing) providerHelper.getPGPKeyRing(dataUri);
if (keyring != null) {
PgpImportExport pgpImportExport = new PgpImportExport(this, null);
boolean uploaded = pgpImportExport.uploadKeyRingToServer(server,
(PGPPublicKeyRing) keyring);
if (!uploaded) {
throw new PgpGeneralException("Unable to export key to selected server");
}
}
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY);
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_DOWNLOAD_AND_IMPORT_KEYS.equals(action)) {
try {
ArrayList<ImportKeysListEntry> entries = data.getParcelableArrayList(DOWNLOAD_KEY_LIST);
String keyServer = data.getString(DOWNLOAD_KEY_SERVER);
// this downloads the keys and places them into the ImportKeysListEntry entries
HkpKeyServer server = new HkpKeyServer(keyServer);
for (ImportKeysListEntry entry : entries) {
// if available use complete fingerprint for get request
byte[] downloadedKeyBytes;
if (entry.getFingerPrintHex() != null) {
downloadedKeyBytes = server.get("0x" + entry.getFingerPrintHex()).getBytes();
} else {
downloadedKeyBytes = server.get(entry.getKeyIdHex()).getBytes();
}
// create PGPKeyRing object based on downloaded armored key
PGPKeyRing downloadedKey = null;
BufferedInputStream bufferedInput =
new BufferedInputStream(new ByteArrayInputStream(downloadedKeyBytes));
if (bufferedInput.available() > 0) {
InputStream in = PGPUtil.getDecoderStream(bufferedInput);
PGPObjectFactory objectFactory = new PGPObjectFactory(in);
// get first object in block
Object obj;
if ((obj = objectFactory.nextObject()) != null) {
Log.d(Constants.TAG, "Found class: " + obj.getClass());
if (obj instanceof PGPKeyRing) {
downloadedKey = (PGPKeyRing) obj;
} else {
throw new PgpGeneralException("Object not recognized as PGPKeyRing!");
}
}
}
// verify downloaded key by comparing fingerprints
if (entry.getFingerPrintHex() != null) {
String downloadedKeyFp = PgpKeyHelper.convertFingerprintToHex(
downloadedKey.getPublicKey().getFingerprint());
if (downloadedKeyFp.equals(entry.getFingerPrintHex())) {
Log.d(Constants.TAG, "fingerprint of downloaded key is the same as " +
"the requested fingerprint!");
} else {
throw new PgpGeneralException("fingerprint of downloaded key is " +
"NOT the same as the requested fingerprint!");
}
}
// save key bytes in entry object for doing the
// actual import afterwards
entry.setBytes(downloadedKey.getEncoded());
}
Intent importIntent = new Intent(this, KeychainIntentService.class);
importIntent.setAction(ACTION_IMPORT_KEYRING);
Bundle importData = new Bundle();
importData.putParcelableArrayList(IMPORT_KEY_LIST, entries);
importIntent.putExtra(EXTRA_DATA, importData);
importIntent.putExtra(EXTRA_MESSENGER, mMessenger);
// now import it with this service
onHandleIntent(importIntent);
// result is handled in ACTION_IMPORT_KEYRING
} catch (Exception e) {
sendErrorToHandler(e);
}
} else if (ACTION_CERTIFY_KEYRING.equals(action)) {
try {
/* Input */
long masterKeyId = data.getLong(CERTIFY_KEY_MASTER_KEY_ID);
long pubKeyId = data.getLong(CERTIFY_KEY_PUB_KEY_ID);
ArrayList<String> userIds = data.getStringArrayList(CERTIFY_KEY_UIDS);
/* Operation */
String signaturePassphrase = PassphraseCacheService.getCachedPassphrase(this,
masterKeyId);
if (signaturePassphrase == null) {
throw new PgpGeneralException("Unable to obtain passphrase");
}
ProviderHelper providerHelper = new ProviderHelper(this);
PgpKeyOperation keyOperation = new PgpKeyOperation(new ProgressScaler(this, 0, 100, 100));
PGPPublicKeyRing publicRing = providerHelper.getPGPPublicKeyRing(pubKeyId);
PGPPublicKey publicKey = publicRing.getPublicKey(pubKeyId);
PGPSecretKeyRing secretKeyRing = null;
try {
secretKeyRing = providerHelper.getPGPSecretKeyRing(masterKeyId);
} catch (ProviderHelper.NotFoundException e) {
Log.e(Constants.TAG, "key not found!", e);
// TODO: throw exception here!
}
PGPSecretKey certificationKey = PgpKeyHelper.getCertificationKey(secretKeyRing);
publicKey = keyOperation.certifyKey(certificationKey, publicKey,
userIds, signaturePassphrase);
publicRing = PGPPublicKeyRing.insertPublicKey(publicRing, publicKey);
// store the signed key in our local cache
PgpImportExport pgpImportExport = new PgpImportExport(this, null);
int retval = pgpImportExport.storeKeyRingInCache(publicRing);
if (retval != Id.return_value.ok && retval != Id.return_value.updated) {
throw new PgpGeneralException("Failed to store signed key in local cache");
}
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY);
} catch (Exception e) {
sendErrorToHandler(e);
}
}
}
private void sendErrorToHandler(Exception e) {
// Service was canceled. Do not send error to handler.
if (this.mIsCanceled) {
return;
}
// contextualize the exception, if necessary
if (e instanceof PgpGeneralMsgIdException) {
e = ((PgpGeneralMsgIdException) e).getContextualized(this);
}
Log.e(Constants.TAG, "KeychainIntentService Exception: ", e);
e.printStackTrace();
Bundle data = new Bundle();
data.putString(KeychainIntentServiceHandler.DATA_ERROR, e.getMessage());
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_EXCEPTION, null, data);
}
private void sendMessageToHandler(Integer arg1, Integer arg2, Bundle data) {
// Service was canceled. Do not send message to handler.
if (this.mIsCanceled) {
return;
}
Message msg = Message.obtain();
msg.arg1 = arg1;
if (arg2 != null) {
msg.arg2 = arg2;
}
if (data != null) {
msg.setData(data);
}
try {
mMessenger.send(msg);
} catch (RemoteException e) {
Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
} catch (NullPointerException e) {
Log.w(Constants.TAG, "Messenger is null!", e);
}
}
private void sendMessageToHandler(Integer arg1, Bundle data) {
sendMessageToHandler(arg1, null, data);
}
private void sendMessageToHandler(Integer arg1) {
sendMessageToHandler(arg1, null, null);
}
/**
* Set progressDialogUpdater of ProgressDialog by sending message to handler on UI thread
*/
public void setProgress(String message, int progress, int max) {
Log.d(Constants.TAG, "Send message by setProgress with progressDialogUpdater=" + progress + ", max="
+ max);
Bundle data = new Bundle();
if (message != null) {
data.putString(KeychainIntentServiceHandler.DATA_MESSAGE, message);
}
data.putInt(KeychainIntentServiceHandler.DATA_PROGRESS, progress);
data.putInt(KeychainIntentServiceHandler.DATA_PROGRESS_MAX, max);
sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_UPDATE_PROGRESS, null, data);
}
public void setProgress(int resourceId, int progress, int max) {
setProgress(getString(resourceId), progress, max);
}
public void setProgress(int progress, int max) {
setProgress(null, progress, max);
}
@Override
public boolean hasServiceStopped() {
return mIsCanceled;
}
}
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