/* * 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.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.keyimport.FileImportCache; import org.sufficientlysecure.keychain.keyimport.HkpKeyserver; import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry; import org.sufficientlysecure.keychain.keyimport.KeybaseKeyserver; import org.sufficientlysecure.keychain.keyimport.Keyserver; import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing; import org.sufficientlysecure.keychain.pgp.CanonicalizedPublicKeyRing; import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey; import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKeyRing; 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.PgpKeyOperation; import org.sufficientlysecure.keychain.pgp.PgpSignEncrypt; import org.sufficientlysecure.keychain.pgp.Progressable; import org.sufficientlysecure.keychain.pgp.UncachedKeyRing; 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.service.OperationResults.EditKeyResult; import org.sufficientlysecure.keychain.service.OperationResults.ImportKeyResult; import org.sufficientlysecure.keychain.util.InputData; import org.sufficientlysecure.keychain.util.Log; import org.sufficientlysecure.keychain.util.ProgressScaler; 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, PgpImportExport.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_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_IMPORT_KEYBASE_KEYS = Constants.INTENT_PREFIX + "DOWNLOAD_KEYBASE"; 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"; public static final String SOURCE = "source"; // possible targets: public static final int IO_BYTES = 1; public static final int IO_FILE = 2; // This was misleadingly TARGET_URI before! public static final int IO_URI = 3; public static final int IO_URIS = 4; public static final String SELECTED_URI = "selected_uri"; // 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_INPUT_URI = "input_uri"; public static final String ENCRYPT_INPUT_URIS = "input_uris"; public static final String ENCRYPT_OUTPUT_FILE = "output_file"; public static final String ENCRYPT_OUTPUT_URI = "output_uri"; public static final String ENCRYPT_OUTPUT_URIS = "output_uris"; 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_PASSPHRASE = "passphrase"; // delete file securely public static final String DELETE_FILE = "deleteFile"; // 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_URI = "export_uri"; 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 */ // 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"; // export public static final String RESULT_EXPORT = "exported"; public static final String RESULT_IMPORT = "result"; 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); if (data == null) { Log.e(Constants.TAG, "data extra is null!"); return; } OtherHelper.logDebugBundle(data, "EXTRA_DATA"); String action = intent.getAction(); // executeServiceMethod action from extra bundle if (ACTION_ENCRYPT_SIGN.equals(action)) { try { /* Input */ int source = data.get(SOURCE) != null ? data.getInt(SOURCE) : data.getInt(TARGET); Bundle resultData = new Bundle(); 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); int urisCount = data.containsKey(ENCRYPT_INPUT_URIS) ? data.getParcelableArrayList(ENCRYPT_INPUT_URIS).size() : 1; for (int i = 0; i < urisCount; i++) { data.putInt(SELECTED_URI, i); InputData inputData = createEncryptInputData(data); OutputStream outStream = createCryptOutputStream(data); /* 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) .setEncryptToSigner(true) .setSignatureHashAlgorithm( Preferences.getPreferences(this).getDefaultHashAlgorithm()) .setSignaturePassphrase( PassphraseCacheService.getCachedPassphrase(this, signatureKeyId)); // this assumes that the bytes are cleartext (valid for current implementation!) if (source == IO_BYTES) { builder.setCleartextInput(true); } builder.build().execute(); outStream.close(); /* Output */ finalizeEncryptOutputStream(data, resultData, outStream); } OtherHelper.logDebugBundle(resultData, "resultData"); sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, resultData); } catch (Exception e) { sendErrorToHandler(e); } } else if (ACTION_DECRYPT_VERIFY.equals(action)) { try { /* Input */ String passphrase = data.getString(DECRYPT_PASSPHRASE); InputData inputData = createDecryptInputData(data); OutputStream outStream = createCryptOutputStream(data); /* 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 */ finalizeDecryptOutputStream(data, resultData, outStream); 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); if (saveParcel == null) { Log.e(Constants.TAG, "bug: missing save_keyring_parcel in data!"); return; } /* Operation */ ProviderHelper providerHelper = new ProviderHelper(this); PgpKeyOperation keyOperations = new PgpKeyOperation(new ProgressScaler(this, 10, 60, 100)); EditKeyResult result; if (saveParcel.mMasterKeyId != null) { String passphrase = data.getString(SAVE_KEYRING_PASSPHRASE); CanonicalizedSecretKeyRing secRing = providerHelper.getCanonicalizedSecretKeyRing(saveParcel.mMasterKeyId); result = keyOperations.modifySecretKeyRing(secRing, saveParcel, passphrase); } else { result = keyOperations.createSecretKeyRing(saveParcel); } UncachedKeyRing ring = result.getRing(); providerHelper.saveSecretKeyRing(ring, new ProgressScaler(this, 60, 95, 100)); // cache new passphrase if (saveParcel.mNewPassphrase != null) { PassphraseCacheService.addCachedPassphrase(this, ring.getMasterKeyId(), saveParcel.mNewPassphrase, ring.getPublicKey().getPrimaryUserIdWithFallback()); } setProgress(R.string.progress_done, 100, 100); /* Output */ sendMessageToHandler(KeychainIntentServiceHandler.MESSAGE_OKAY, result); } 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 { // get entries from cached file FileImportCache cache = new FileImportCache(this); List entries = cache.readCache(); PgpImportExport pgpImportExport = new PgpImportExport(this, this); ImportKeyResult result = pgpImportExport.importKeyRings(entries); Bundle resultData = new Bundle(); resultData.putParcelable(RESULT_IMPORT, result); 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); Uri outputUri = data.getParcelable(EXPORT_URI); // If not exporting all keys get the masterKeyIds of the keys to export from the intent boolean exportAll = data.getBoolean(EXPORT_ALL); if (outputFile != null) { // 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 { if (cursor != null && 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 { if (cursor != null) { cursor.close(); } } OutputStream outStream; if (outputFile != null) { outStream = new FileOutputStream(outputFile); } else { outStream = getContentResolver().openOutputStream(outputUri); } PgpImportExport pgpImportExport = new PgpImportExport(this, this, this); Bundle resultData = pgpImportExport .exportKeyRings(publicMasterKeyIds, secretMasterKeyIds, outStream); if (mIsCanceled && outputFile != null) { 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); CanonicalizedPublicKeyRing keyring = providerHelper.getCanonicalizedPublicKeyRing(dataUri); PgpImportExport pgpImportExport = new PgpImportExport(this, null); boolean uploaded = pgpImportExport.uploadKeyRingToServer(server, 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) || ACTION_IMPORT_KEYBASE_KEYS.equals(action)) { try { ArrayList entries = data.getParcelableArrayList(DOWNLOAD_KEY_LIST); // this downloads the keys and places them into the ImportKeysListEntry entries String keyServer = data.getString(DOWNLOAD_KEY_SERVER); ArrayList keyRings = new ArrayList(entries.size()); for (ImportKeysListEntry entry : entries) { Keyserver server; if (entry.getOrigin() == null) { server = new HkpKeyserver(keyServer); } else if (KeybaseKeyserver.ORIGIN.equals(entry.getOrigin())) { server = new KeybaseKeyserver(); } else { server = new HkpKeyserver(entry.getOrigin()); } // if available use complete fingerprint for get request byte[] downloadedKeyBytes; if (KeybaseKeyserver.ORIGIN.equals(entry.getOrigin())) { downloadedKeyBytes = server.get(entry.getExtraData()).getBytes(); } else if (entry.getFingerprintHex() != null) { downloadedKeyBytes = server.get("0x" + entry.getFingerprintHex()).getBytes(); } else { downloadedKeyBytes = server.get(entry.getKeyIdHex()).getBytes(); } // save key bytes in entry object for doing the // actual import afterwards keyRings.add(new ParcelableKeyRing(downloadedKeyBytes, entry.getFingerprintHex())); } Intent importIntent = new Intent(this, KeychainIntentService.class); importIntent.setAction(ACTION_IMPORT_KEYRING); Bundle importData = new Bundle(); 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); CanonicalizedPublicKeyRing publicRing = providerHelper.getCanonicalizedPublicKeyRing(pubKeyId); CanonicalizedSecretKeyRing secretKeyRing = providerHelper.getCanonicalizedSecretKeyRing(masterKeyId); CanonicalizedSecretKey certificationKey = secretKeyRing.getSecretKey(); if(!certificationKey.unlock(signaturePassphrase)) { throw new PgpGeneralException("Error extracting key (bad passphrase?)"); } UncachedKeyRing newRing = certificationKey.certifyUserIds(publicRing, userIds); // store the signed key in our local cache providerHelper.savePublicKeyRing(newRing); 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(); assert msg != null; 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, OperationResultParcel data) { Bundle bundle = new Bundle(); bundle.putParcelable(OperationResultParcel.EXTRA_RESULT, data); sendMessageToHandler(arg1, null, bundle); } 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; } private InputData createDecryptInputData(Bundle data) throws IOException, PgpGeneralException { return createCryptInputData(data, DECRYPT_CIPHERTEXT_BYTES); } private InputData createEncryptInputData(Bundle data) throws IOException, PgpGeneralException { return createCryptInputData(data, ENCRYPT_MESSAGE_BYTES); } private InputData createCryptInputData(Bundle data, String bytesName) throws PgpGeneralException, IOException { int source = data.get(SOURCE) != null ? data.getInt(SOURCE) : data.getInt(TARGET); switch (source) { case IO_BYTES: /* encrypting bytes directly */ byte[] bytes = data.getByteArray(bytesName); return new InputData(new ByteArrayInputStream(bytes), bytes.length); case IO_FILE: /* encrypting file */ String inputFile = data.getString(ENCRYPT_INPUT_FILE); // check if storage is ready if (!FileHelper.isStorageMounted(inputFile)) { throw new PgpGeneralException(getString(R.string.error_external_storage_not_ready)); } return new InputData(new FileInputStream(inputFile), new File(inputFile).length()); case IO_URI: /* encrypting content uri */ Uri providerUri = data.getParcelable(ENCRYPT_INPUT_URI); // InputStream return new InputData(getContentResolver().openInputStream(providerUri), 0); case IO_URIS: providerUri = data.getParcelableArrayList(ENCRYPT_INPUT_URIS).get(data.getInt(SELECTED_URI)); // InputStream return new InputData(getContentResolver().openInputStream(providerUri), 0); default: throw new PgpGeneralException("No target choosen!"); } } private OutputStream createCryptOutputStream(Bundle data) throws PgpGeneralException, FileNotFoundException { int target = data.getInt(TARGET); switch (target) { case IO_BYTES: return new ByteArrayOutputStream(); case IO_FILE: String outputFile = data.getString(ENCRYPT_OUTPUT_FILE); // check if storage is ready if (!FileHelper.isStorageMounted(outputFile)) { throw new PgpGeneralException( getString(R.string.error_external_storage_not_ready)); } // OutputStream return new FileOutputStream(outputFile); case IO_URI: Uri providerUri = data.getParcelable(ENCRYPT_OUTPUT_URI); return getContentResolver().openOutputStream(providerUri); case IO_URIS: providerUri = data.getParcelableArrayList(ENCRYPT_OUTPUT_URIS).get(data.getInt(SELECTED_URI)); return getContentResolver().openOutputStream(providerUri); default: throw new PgpGeneralException("No target choosen!"); } } private void finalizeEncryptOutputStream(Bundle data, Bundle resultData, OutputStream outStream) { finalizeCryptOutputStream(data, resultData, outStream, RESULT_BYTES); } private void finalizeDecryptOutputStream(Bundle data, Bundle resultData, OutputStream outStream) { finalizeCryptOutputStream(data, resultData, outStream, RESULT_DECRYPTED_BYTES); } private void finalizeCryptOutputStream(Bundle data, Bundle resultData, OutputStream outStream, String bytesName) { int target = data.getInt(TARGET); switch (target) { case IO_BYTES: byte output[] = ((ByteArrayOutputStream) outStream).toByteArray(); resultData.putByteArray(bytesName, output); break; case IO_FILE: // nothing, file was written, just send okay and verification bundle break; case IO_URI: case IO_URIS: // nothing, output was written, just send okay and verification bundle break; } } }