655 lines
21 KiB
Dart
655 lines
21 KiB
Dart
import 'dart:convert';
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import 'dart:io' as io;
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import 'dart:typed_data';
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import 'package:bip39/bip39.dart' as bip39;
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import 'package:flutter_secure_storage/flutter_secure_storage.dart';
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import 'package:flutter_sodium/flutter_sodium.dart';
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import 'package:logging/logging.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:photos/core/constants.dart';
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import 'package:photos/core/error-reporting/super_logging.dart';
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import 'package:photos/core/errors.dart';
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import 'package:photos/core/event_bus.dart';
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import 'package:photos/db/collections_db.dart';
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import 'package:photos/db/files_db.dart';
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import 'package:photos/db/memories_db.dart';
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import 'package:photos/db/public_keys_db.dart';
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import 'package:photos/db/trash_db.dart';
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import 'package:photos/db/upload_locks_db.dart';
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import 'package:photos/events/signed_in_event.dart';
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import 'package:photos/events/user_logged_out_event.dart';
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import 'package:photos/models/key_attributes.dart';
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import 'package:photos/models/key_gen_result.dart';
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import 'package:photos/models/private_key_attributes.dart';
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import 'package:photos/services/billing_service.dart';
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import 'package:photos/services/collections_service.dart';
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import 'package:photos/services/favorites_service.dart';
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import 'package:photos/services/ignored_files_service.dart';
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import 'package:photos/services/memories_service.dart';
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import 'package:photos/services/search_service.dart';
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import 'package:photos/services/sync_service.dart';
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import 'package:photos/utils/crypto_util.dart';
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import 'package:photos/utils/file_uploader.dart';
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import 'package:photos/utils/validator_util.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:uuid/uuid.dart';
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import 'package:wakelock/wakelock.dart';
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class Configuration {
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Configuration._privateConstructor();
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static final Configuration instance = Configuration._privateConstructor();
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static const endpoint = String.fromEnvironment(
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"endpoint",
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defaultValue: kDefaultProductionEndpoint,
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);
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static const emailKey = "email";
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static const foldersToBackUpKey = "folders_to_back_up";
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static const keyAttributesKey = "key_attributes";
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static const keyKey = "key";
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static const keyShouldBackupOverMobileData = "should_backup_over_mobile_data";
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static const keyShouldBackupVideos = "should_backup_videos";
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// keyShouldKeepDeviceAwake is used to determine whether the device screen
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// should be kept on while the app is in foreground.
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static const keyShouldKeepDeviceAwake = "should_keep_device_awake";
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static const keyShouldShowLockScreen = "should_show_lock_screen";
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static const keyHasSelectedAnyBackupFolder =
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"has_selected_any_folder_for_backup";
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static const lastTempFolderClearTimeKey = "last_temp_folder_clear_time";
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static const nameKey = "name";
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static const secretKeyKey = "secret_key";
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static const tokenKey = "token";
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static const encryptedTokenKey = "encrypted_token";
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static const userIDKey = "user_id";
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static const hasMigratedSecureStorageToFirstUnlockKey =
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"has_migrated_secure_storage_to_first_unlock";
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static const hasSelectedAllFoldersForBackupKey =
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"has_selected_all_folders_for_backup";
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static const anonymousUserIDKey = "anonymous_user_id";
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final kTempFolderDeletionTimeBuffer = const Duration(days: 1).inMicroseconds;
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static final _logger = Logger("Configuration");
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String? _cachedToken;
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late String _documentsDirectory;
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String? _key;
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late SharedPreferences _preferences;
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String? _secretKey;
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late FlutterSecureStorage _secureStorage;
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late String _tempDirectory;
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late String _thumbnailCacheDirectory;
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// 6th July 22: Remove this after 3 months. Hopefully, active users
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// will migrate to newer version of the app, where shared media is stored
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// on appSupport directory which OS won't clean up automatically
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late String _sharedTempMediaDirectory;
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late String _sharedDocumentsMediaDirectory;
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String? _volatilePassword;
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final _secureStorageOptionsIOS =
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const IOSOptions(accessibility: IOSAccessibility.first_unlock);
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Future<void> init() async {
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_preferences = await SharedPreferences.getInstance();
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_secureStorage = const FlutterSecureStorage();
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_documentsDirectory = (await getApplicationDocumentsDirectory()).path;
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_tempDirectory = _documentsDirectory + "/temp/";
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final tempDirectory = io.Directory(_tempDirectory);
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try {
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final currentTime = DateTime.now().microsecondsSinceEpoch;
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if (tempDirectory.existsSync() &&
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(_preferences.getInt(lastTempFolderClearTimeKey) ?? 0) <
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(currentTime - kTempFolderDeletionTimeBuffer)) {
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await tempDirectory.delete(recursive: true);
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await _preferences.setInt(lastTempFolderClearTimeKey, currentTime);
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_logger.info("Cleared temp folder");
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} else {
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_logger.info("Skipping temp folder clear");
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}
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} catch (e) {
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_logger.warning(e);
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}
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tempDirectory.createSync(recursive: true);
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final tempDirectoryPath = (await getTemporaryDirectory()).path;
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_thumbnailCacheDirectory = tempDirectoryPath + "/thumbnail-cache";
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io.Directory(_thumbnailCacheDirectory).createSync(recursive: true);
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_sharedTempMediaDirectory = tempDirectoryPath + "/ente-shared-media";
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io.Directory(_sharedTempMediaDirectory).createSync(recursive: true);
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_sharedDocumentsMediaDirectory = _documentsDirectory + "/ente-shared-media";
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io.Directory(_sharedDocumentsMediaDirectory).createSync(recursive: true);
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if (!_preferences.containsKey(tokenKey)) {
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await _secureStorage.deleteAll(iOptions: _secureStorageOptionsIOS);
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} else {
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_key = await _secureStorage.read(
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key: keyKey,
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iOptions: _secureStorageOptionsIOS,
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);
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_secretKey = await _secureStorage.read(
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key: secretKeyKey,
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iOptions: _secureStorageOptionsIOS,
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);
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if (_key == null) {
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await logout(autoLogout: true);
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}
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await _migrateSecurityStorageToFirstUnlock();
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}
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SuperLogging.setUserID(await _getOrCreateAnonymousUserID());
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}
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Future<void> logout({bool autoLogout = false}) async {
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if (SyncService.instance.isSyncInProgress()) {
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SyncService.instance.stopSync();
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try {
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await SyncService.instance
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.existingSync()
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.timeout(const Duration(seconds: 5));
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} catch (e) {
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// ignore
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}
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}
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await _preferences.clear();
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await _secureStorage.deleteAll(iOptions: _secureStorageOptionsIOS);
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_key = null;
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_cachedToken = null;
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_secretKey = null;
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await FilesDB.instance.clearTable();
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await CollectionsDB.instance.clearTable();
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await MemoriesDB.instance.clearTable();
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await PublicKeysDB.instance.clearTable();
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await UploadLocksDB.instance.clearTable();
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await IgnoredFilesService.instance.reset();
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await TrashDB.instance.clearTable();
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FileUploader.instance.clearCachedUploadURLs();
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if (!autoLogout) {
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CollectionsService.instance.clearCache();
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FavoritesService.instance.clearCache();
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MemoriesService.instance.clearCache();
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BillingService.instance.clearCache();
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SearchService.instance.clearCache();
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Bus.instance.fire(UserLoggedOutEvent());
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} else {
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_preferences.setBool("auto_logout", true);
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}
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}
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bool showAutoLogoutDialog() {
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return _preferences.containsKey("auto_logout");
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}
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Future<bool> clearAutoLogoutFlag() {
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return _preferences.remove("auto_logout");
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}
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Future<KeyGenResult> generateKey(String password) async {
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// Create a master key
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final masterKey = CryptoUtil.generateKey();
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// Create a recovery key
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final recoveryKey = CryptoUtil.generateKey();
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// Encrypt master key and recovery key with each other
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final encryptedMasterKey = CryptoUtil.encryptSync(masterKey, recoveryKey);
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final encryptedRecoveryKey = CryptoUtil.encryptSync(recoveryKey, masterKey);
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// Derive a key from the password that will be used to encrypt and
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// decrypt the master key
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final kekSalt = CryptoUtil.getSaltToDeriveKey();
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final derivedKeyResult = await CryptoUtil.deriveSensitiveKey(
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utf8.encode(password) as Uint8List,
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kekSalt,
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);
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// Encrypt the key with this derived key
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final encryptedKeyData =
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CryptoUtil.encryptSync(masterKey, derivedKeyResult.key);
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// Generate a public-private keypair and encrypt the latter
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final keyPair = await CryptoUtil.generateKeyPair();
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final encryptedSecretKeyData =
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CryptoUtil.encryptSync(keyPair.sk, masterKey);
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final attributes = KeyAttributes(
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Sodium.bin2base64(kekSalt),
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Sodium.bin2base64(encryptedKeyData.encryptedData!),
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Sodium.bin2base64(encryptedKeyData.nonce!),
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Sodium.bin2base64(keyPair.pk),
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Sodium.bin2base64(encryptedSecretKeyData.encryptedData!),
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Sodium.bin2base64(encryptedSecretKeyData.nonce!),
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derivedKeyResult.memLimit,
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derivedKeyResult.opsLimit,
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Sodium.bin2base64(encryptedMasterKey.encryptedData!),
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Sodium.bin2base64(encryptedMasterKey.nonce!),
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Sodium.bin2base64(encryptedRecoveryKey.encryptedData!),
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Sodium.bin2base64(encryptedRecoveryKey.nonce!),
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);
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final privateAttributes = PrivateKeyAttributes(
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Sodium.bin2base64(masterKey),
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Sodium.bin2hex(recoveryKey),
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Sodium.bin2base64(keyPair.sk),
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);
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return KeyGenResult(attributes, privateAttributes);
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}
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Future<KeyAttributes> updatePassword(String password) async {
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// Get master key
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final masterKey = getKey();
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// Derive a key from the password that will be used to encrypt and
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// decrypt the master key
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final kekSalt = CryptoUtil.getSaltToDeriveKey();
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final derivedKeyResult = await CryptoUtil.deriveSensitiveKey(
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utf8.encode(password) as Uint8List,
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kekSalt,
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);
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// Encrypt the key with this derived key
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final encryptedKeyData =
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CryptoUtil.encryptSync(masterKey!, derivedKeyResult.key);
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final existingAttributes = getKeyAttributes();
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return existingAttributes!.copyWith(
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kekSalt: Sodium.bin2base64(kekSalt),
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encryptedKey: Sodium.bin2base64(encryptedKeyData.encryptedData!),
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keyDecryptionNonce: Sodium.bin2base64(encryptedKeyData.nonce!),
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memLimit: derivedKeyResult.memLimit,
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opsLimit: derivedKeyResult.opsLimit,
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);
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}
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Future<void> decryptAndSaveSecrets(
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String password,
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KeyAttributes attributes,
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) async {
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_logger.info('Start decryptAndSaveSecrets');
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validatePreVerificationStateCheck(
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attributes,
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password,
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getEncryptedToken(),
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);
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_logger.info('state validation done');
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final kek = await CryptoUtil.deriveKey(
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utf8.encode(password) as Uint8List,
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Sodium.base642bin(attributes.kekSalt),
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attributes.memLimit!,
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attributes.opsLimit!,
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).onError((e, s) {
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_logger.severe('deriveKey failed', e, s);
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throw KeyDerivationError();
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});
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_logger.info('user-key done');
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Uint8List key;
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try {
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key = CryptoUtil.decryptSync(
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Sodium.base642bin(attributes.encryptedKey),
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kek,
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Sodium.base642bin(attributes.keyDecryptionNonce),
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);
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} catch (e) {
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_logger.severe('master-key failed, incorrect password?', e);
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throw Exception("Incorrect password");
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}
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_logger.info("master-key done");
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await setKey(Sodium.bin2base64(key));
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final secretKey = CryptoUtil.decryptSync(
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Sodium.base642bin(attributes.encryptedSecretKey),
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key,
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Sodium.base642bin(attributes.secretKeyDecryptionNonce),
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);
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_logger.info("secret-key done");
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await setSecretKey(Sodium.bin2base64(secretKey));
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final token = CryptoUtil.openSealSync(
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Sodium.base642bin(getEncryptedToken()!),
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Sodium.base642bin(attributes.publicKey),
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secretKey,
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);
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_logger.info('appToken done');
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await setToken(
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Sodium.bin2base64(token, variant: Sodium.base64VariantUrlsafe),
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);
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}
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Future<void> verifyPassword(String password) async {
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final KeyAttributes attributes = getKeyAttributes()!;
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_logger.info('state validation done');
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final kek = await CryptoUtil.deriveKey(
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utf8.encode(password) as Uint8List,
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Sodium.base642bin(attributes.kekSalt),
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attributes.memLimit!,
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attributes.opsLimit!,
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).onError((e, s) {
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_logger.severe('deriveKey failed', e, s);
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throw KeyDerivationError();
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});
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_logger.info('user-key done');
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try {
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final Uint8List key = CryptoUtil.decryptSync(
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Sodium.base642bin(attributes.encryptedKey),
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kek,
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Sodium.base642bin(attributes.keyDecryptionNonce),
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);
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} catch (e) {
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_logger.severe('master-key failed, incorrect password?', e);
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throw Exception("Incorrect password");
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}
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}
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Future<KeyAttributes> createNewRecoveryKey() async {
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final masterKey = getKey()!;
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final existingAttributes = getKeyAttributes();
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// Create a recovery key
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final recoveryKey = CryptoUtil.generateKey();
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// Encrypt master key and recovery key with each other
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final encryptedMasterKey = CryptoUtil.encryptSync(masterKey, recoveryKey);
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final encryptedRecoveryKey = CryptoUtil.encryptSync(recoveryKey, masterKey);
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return existingAttributes!.copyWith(
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masterKeyEncryptedWithRecoveryKey:
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Sodium.bin2base64(encryptedMasterKey.encryptedData!),
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masterKeyDecryptionNonce: Sodium.bin2base64(encryptedMasterKey.nonce!),
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recoveryKeyEncryptedWithMasterKey:
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Sodium.bin2base64(encryptedRecoveryKey.encryptedData!),
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recoveryKeyDecryptionNonce:
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Sodium.bin2base64(encryptedRecoveryKey.nonce!),
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);
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}
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Future<void> recover(String recoveryKey) async {
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// check if user has entered mnemonic code
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if (recoveryKey.contains(' ')) {
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if (recoveryKey.split(' ').length != mnemonicKeyWordCount) {
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throw AssertionError(
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'recovery code should have $mnemonicKeyWordCount words',
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);
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}
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recoveryKey = bip39.mnemonicToEntropy(recoveryKey);
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}
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final attributes = getKeyAttributes();
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Uint8List masterKey;
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try {
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masterKey = await CryptoUtil.decrypt(
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Sodium.base642bin(attributes!.masterKeyEncryptedWithRecoveryKey!),
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Sodium.hex2bin(recoveryKey),
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Sodium.base642bin(attributes.masterKeyDecryptionNonce!),
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);
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} catch (e) {
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_logger.severe(e);
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rethrow;
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}
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await setKey(Sodium.bin2base64(masterKey));
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final secretKey = CryptoUtil.decryptSync(
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Sodium.base642bin(attributes.encryptedSecretKey),
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masterKey,
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Sodium.base642bin(attributes.secretKeyDecryptionNonce),
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);
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await setSecretKey(Sodium.bin2base64(secretKey));
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final token = CryptoUtil.openSealSync(
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Sodium.base642bin(getEncryptedToken()!),
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Sodium.base642bin(attributes.publicKey),
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secretKey,
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);
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await setToken(
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Sodium.bin2base64(token, variant: Sodium.base64VariantUrlsafe),
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);
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}
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String getHttpEndpoint() {
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return endpoint;
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}
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String? getToken() {
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_cachedToken ??= _preferences.getString(tokenKey);
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return _cachedToken;
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}
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bool isLoggedIn() {
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return getToken() != null;
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}
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Future<void> setToken(String token) async {
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_cachedToken = token;
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await _preferences.setString(tokenKey, token);
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Bus.instance.fire(SignedInEvent());
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}
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Future<void> setEncryptedToken(String encryptedToken) async {
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await _preferences.setString(encryptedTokenKey, encryptedToken);
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}
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String? getEncryptedToken() {
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return _preferences.getString(encryptedTokenKey);
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}
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String? getEmail() {
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return _preferences.getString(emailKey);
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}
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Future<void> setEmail(String email) async {
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await _preferences.setString(emailKey, email);
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}
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String? getName() {
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return _preferences.getString(nameKey);
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}
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Future<void> setName(String name) async {
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await _preferences.setString(nameKey, name);
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}
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int? getUserID() {
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return _preferences.getInt(userIDKey);
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}
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Future<void> setUserID(int userID) async {
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await _preferences.setInt(userIDKey, userID);
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}
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Set<String> getPathsToBackUp() {
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if (_preferences.containsKey(foldersToBackUpKey)) {
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return _preferences.getStringList(foldersToBackUpKey)!.toSet();
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} else {
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return <String>{};
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}
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}
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Future<void> setKeyAttributes(KeyAttributes attributes) async {
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await _preferences.setString(keyAttributesKey, attributes.toJson());
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}
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KeyAttributes? getKeyAttributes() {
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final jsonValue = _preferences.getString(keyAttributesKey);
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if (jsonValue == null) {
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return null;
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} else {
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return KeyAttributes.fromJson(jsonValue);
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}
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}
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Future<void> setKey(String? key) async {
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_key = key;
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if (key == null) {
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await _secureStorage.delete(
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key: keyKey,
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iOptions: _secureStorageOptionsIOS,
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);
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} else {
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await _secureStorage.write(
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key: keyKey,
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value: key,
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iOptions: _secureStorageOptionsIOS,
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);
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}
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}
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Future<void> setSecretKey(String? secretKey) async {
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_secretKey = secretKey;
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if (secretKey == null) {
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await _secureStorage.delete(
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key: secretKeyKey,
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iOptions: _secureStorageOptionsIOS,
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);
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|
} else {
|
|
await _secureStorage.write(
|
|
key: secretKeyKey,
|
|
value: secretKey,
|
|
iOptions: _secureStorageOptionsIOS,
|
|
);
|
|
}
|
|
}
|
|
|
|
Uint8List? getKey() {
|
|
return _key == null ? null : Sodium.base642bin(_key!);
|
|
}
|
|
|
|
Uint8List? getSecretKey() {
|
|
return _secretKey == null ? null : Sodium.base642bin(_secretKey!);
|
|
}
|
|
|
|
Uint8List getRecoveryKey() {
|
|
final keyAttributes = getKeyAttributes()!;
|
|
return CryptoUtil.decryptSync(
|
|
Sodium.base642bin(keyAttributes.recoveryKeyEncryptedWithMasterKey!),
|
|
getKey(),
|
|
Sodium.base642bin(keyAttributes.recoveryKeyDecryptionNonce!),
|
|
);
|
|
}
|
|
|
|
// Caution: This directory is cleared on app start
|
|
String getTempDirectory() {
|
|
return _tempDirectory;
|
|
}
|
|
|
|
String getThumbnailCacheDirectory() {
|
|
return _thumbnailCacheDirectory;
|
|
}
|
|
|
|
String getOldSharedMediaCacheDirectory() {
|
|
return _sharedTempMediaDirectory;
|
|
}
|
|
|
|
String getSharedMediaDirectory() {
|
|
return _sharedDocumentsMediaDirectory;
|
|
}
|
|
|
|
bool hasConfiguredAccount() {
|
|
return isLoggedIn() && _key != null;
|
|
}
|
|
|
|
bool shouldBackupOverMobileData() {
|
|
if (_preferences.containsKey(keyShouldBackupOverMobileData)) {
|
|
return _preferences.getBool(keyShouldBackupOverMobileData)!;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Future<void> setBackupOverMobileData(bool value) async {
|
|
await _preferences.setBool(keyShouldBackupOverMobileData, value);
|
|
if (value) {
|
|
SyncService.instance.sync().ignore();
|
|
}
|
|
}
|
|
|
|
bool shouldBackupVideos() {
|
|
if (_preferences.containsKey(keyShouldBackupVideos)) {
|
|
return _preferences.getBool(keyShouldBackupVideos)!;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool shouldKeepDeviceAwake() {
|
|
final keepAwake = _preferences.get(keyShouldKeepDeviceAwake);
|
|
return keepAwake == null ? false : keepAwake as bool;
|
|
}
|
|
|
|
Future<void> setShouldKeepDeviceAwake(bool value) async {
|
|
await _preferences.setBool(keyShouldKeepDeviceAwake, value);
|
|
await Wakelock.toggle(enable: value);
|
|
}
|
|
|
|
Future<void> setShouldBackupVideos(bool value) async {
|
|
await _preferences.setBool(keyShouldBackupVideos, value);
|
|
if (value) {
|
|
SyncService.instance.sync().ignore();
|
|
} else {
|
|
SyncService.instance.onVideoBackupPaused();
|
|
}
|
|
}
|
|
|
|
bool shouldShowLockScreen() {
|
|
if (_preferences.containsKey(keyShouldShowLockScreen)) {
|
|
return _preferences.getBool(keyShouldShowLockScreen)!;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Future<void> setShouldShowLockScreen(bool value) {
|
|
return _preferences.setBool(keyShouldShowLockScreen, value);
|
|
}
|
|
|
|
void setVolatilePassword(String? volatilePassword) {
|
|
_volatilePassword = volatilePassword;
|
|
}
|
|
|
|
String? getVolatilePassword() {
|
|
return _volatilePassword;
|
|
}
|
|
|
|
Future<void> setHasSelectedAnyBackupFolder(bool val) async {
|
|
await _preferences.setBool(keyHasSelectedAnyBackupFolder, val);
|
|
}
|
|
|
|
bool hasSelectedAnyBackupFolder() {
|
|
return _preferences.getBool(keyHasSelectedAnyBackupFolder) ?? false;
|
|
}
|
|
|
|
bool hasSelectedAllFoldersForBackup() {
|
|
return _preferences.getBool(hasSelectedAllFoldersForBackupKey) ?? false;
|
|
}
|
|
|
|
Future<void> setSelectAllFoldersForBackup(bool value) async {
|
|
await _preferences.setBool(hasSelectedAllFoldersForBackupKey, value);
|
|
}
|
|
|
|
Future<void> _migrateSecurityStorageToFirstUnlock() async {
|
|
final hasMigratedSecureStorageToFirstUnlock =
|
|
_preferences.getBool(hasMigratedSecureStorageToFirstUnlockKey) ?? false;
|
|
if (!hasMigratedSecureStorageToFirstUnlock &&
|
|
_key != null &&
|
|
_secretKey != null) {
|
|
await _secureStorage.write(
|
|
key: keyKey,
|
|
value: _key,
|
|
iOptions: _secureStorageOptionsIOS,
|
|
);
|
|
await _secureStorage.write(
|
|
key: secretKeyKey,
|
|
value: _secretKey,
|
|
iOptions: _secureStorageOptionsIOS,
|
|
);
|
|
await _preferences.setBool(
|
|
hasMigratedSecureStorageToFirstUnlockKey,
|
|
true,
|
|
);
|
|
}
|
|
}
|
|
|
|
Future<String> _getOrCreateAnonymousUserID() async {
|
|
if (!_preferences.containsKey(anonymousUserIDKey)) {
|
|
//ignore: prefer_const_constructors
|
|
await _preferences.setString(anonymousUserIDKey, Uuid().v4());
|
|
}
|
|
return _preferences.getString(anonymousUserIDKey)!;
|
|
}
|
|
}
|