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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| -keep class net.sqlcipher.** { *; } |
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86 changes: 86 additions & 0 deletions
86
lib/utils/matrix_sdk_extensions/flutter_matrix_sdk_database_builder.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| import 'dart:convert'; | ||
| import 'dart:math'; | ||
|
|
||
| import 'package:flutter/foundation.dart'; | ||
| import 'package:flutter/services.dart'; | ||
|
|
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| import 'package:flutter_secure_storage/flutter_secure_storage.dart'; | ||
| import 'package:matrix/matrix.dart'; | ||
| import 'package:path_provider/path_provider.dart'; | ||
| import 'package:sqflite_common_ffi/sqflite_ffi.dart' as ffi; | ||
| import 'package:sqflite_sqlcipher/sqflite.dart'; | ||
| import 'package:universal_html/html.dart' as html; | ||
|
|
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| import 'package:fluffychat/utils/platform_infos.dart'; | ||
|
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| Future<MatrixSdkDatabase> flutterMatrixSdkDatabaseBuilder(Client client) async { | ||
| final database = await _constructDatabase(client); | ||
| await database.open(); | ||
| return database; | ||
| } | ||
|
|
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| Future<MatrixSdkDatabase> _constructDatabase(Client client) async { | ||
| if (kIsWeb) { | ||
| html.window.navigator.storage?.persist(); | ||
| return MatrixSdkDatabase(client.clientName); | ||
| } | ||
| if (PlatformInfos.isDesktop) { | ||
| final path = await getApplicationSupportDirectory(); | ||
| return MatrixSdkDatabase( | ||
| client.clientName, | ||
| database: await ffi.databaseFactoryFfi.openDatabase( | ||
| '$path/${client.clientName}', | ||
| ), | ||
| maxFileSize: 1024 * 1024 * 10, | ||
| fileStoragePath: path, | ||
| deleteFilesAfterDuration: const Duration(days: 30), | ||
| ); | ||
| } | ||
|
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| final path = await getDatabasesPath(); | ||
| const passwordStorageKey = 'database_password'; | ||
| String? password; | ||
|
|
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| try { | ||
| // Workaround for secure storage is calling Platform.operatingSystem on web | ||
| if (kIsWeb) throw MissingPluginException(); | ||
|
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| const secureStorage = FlutterSecureStorage(); | ||
| final containsEncryptionKey = | ||
| await secureStorage.read(key: passwordStorageKey) != null; | ||
| if (!containsEncryptionKey) { | ||
| final rng = Random.secure(); | ||
| final list = Uint8List(32); | ||
| list.setAll(0, Iterable.generate(list.length, (i) => rng.nextInt(256))); | ||
| final newPassword = base64UrlEncode(list); | ||
| await secureStorage.write( | ||
| key: passwordStorageKey, | ||
| value: newPassword, | ||
| ); | ||
| } | ||
| // workaround for if we just wrote to the key and it still doesn't exist | ||
| password = await secureStorage.read(key: passwordStorageKey); | ||
| if (password == null) throw MissingPluginException(); | ||
| } on MissingPluginException catch (_) { | ||
| const FlutterSecureStorage() | ||
| .delete(key: passwordStorageKey) | ||
| .catchError((_) {}); | ||
| Logs().i('Database encryption is not supported on this platform'); | ||
| } catch (e, s) { | ||
| const FlutterSecureStorage() | ||
| .delete(key: passwordStorageKey) | ||
| .catchError((_) {}); | ||
| Logs().w('Unable to init database encryption', e, s); | ||
| } | ||
|
|
||
| return MatrixSdkDatabase( | ||
| client.clientName, | ||
| database: await openDatabase( | ||
| '$path/${client.clientName}', | ||
| password: password, | ||
| ), | ||
| maxFileSize: 1024 * 1024 * 10, | ||
| fileStoragePath: await getTemporaryDirectory(), | ||
| deleteFilesAfterDuration: const Duration(days: 30), | ||
| ); | ||
| } |
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