/* * Copyright (C) 2012-2014 Dominik Schürmann * * 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 . */ 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.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.Progressable; 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.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 Progressable, 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.setProgressable(this); builder.setEnableAsciiArmorOutput(useAsciiArmor) .setCompressionId(compressionId) .setSymmetricEncryptionAlgorithm( Preferences.getPreferences(this).getDefaultEncryptionAlgorithm()) .setSignatureForceV3(Preferences.getPreferences(this).getForceV3Signatures()) .setEncryptionMasterKeyIds(encryptionKeyIds) .setSymmetricPassphrase(symmetricPassphrase) .setSignatureMasterKeyId(signatureKeyId) .setSignatureHashAlgorithm( Preferences.getPreferences(this).getDefaultHashAlgorithm()) .setSignaturePassphrase( PassphraseCacheService.getCachedPassphrase(this, signatureKeyId)); // this assumes that the bytes are cleartext (valid for current implementation!) if (target == TARGET_BYTES) { builder.setCleartextInput(true); } 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.setProgressable(this); builder.setAllowSymmetricDecryption(true) .setPassphrase(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 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 newKeys = new ArrayList(); ArrayList keyUsageList = new ArrayList(); /* 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(Constants.choice.algorithm.rsa, 4096, passphrase, true); newKeys.add(masterKey); keyUsageList.add(KeyFlags.CERTIFY_OTHER); keysCreated++; setProgress(keysCreated, keysTotal); PGPSecretKey subKey = keyOperations.createKey(Constants.choice.algorithm.rsa, 4096, passphrase, false); newKeys.add(subKey); keyUsageList.add(KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE); keysCreated++; setProgress(keysCreated, keysTotal); subKey = keyOperations.createKey(Constants.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 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 publicMasterKeyIds = new ArrayList(); ArrayList secretMasterKeyIds = new ArrayList(); 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_ANY_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 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 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.getFirstCertificationSubkey(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 != PgpImportExport.RETURN_OK && retval != PgpImportExport.RETURN_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; } // TODO: Implement a better exception handling here // contextualize the exception, if necessary String message; if (e instanceof PgpGeneralMsgIdException) { e = ((PgpGeneralMsgIdException) e).getContextualized(this); message = e.getMessage(); } else if (e instanceof PgpSignEncrypt.KeyExtractionException) { message = getString(R.string.error_could_not_extract_private_key); } else if (e instanceof PgpSignEncrypt.NoPassphraseException) { message = getString(R.string.error_no_signature_passphrase); } else if (e instanceof PgpSignEncrypt.NoSigningKeyException) { message = getString(R.string.error_no_signature_key); } else if (e instanceof PgpDecryptVerify.InvalidDataException) { message = getString(R.string.error_invalid_data); } else if (e instanceof PgpDecryptVerify.KeyExtractionException) { message = getString(R.string.error_could_not_extract_private_key); } else if (e instanceof PgpDecryptVerify.WrongPassphraseException) { message = getString(R.string.error_wrong_passphrase); } else if (e instanceof PgpDecryptVerify.NoSecretKeyException) { message = getString(R.string.error_no_secret_key_found); } else if (e instanceof PgpDecryptVerify.IntegrityCheckFailedException) { message = getString(R.string.error_integrity_check_failed); } else { message = e.getMessage(); } Log.e(Constants.TAG, "KeychainIntentService Exception: ", e); Bundle data = new Bundle(); data.putString(KeychainIntentServiceHandler.DATA_ERROR, message); 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 progress 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 progress=" + 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; } }