feat: Sembast store

lib/main.dart

@@ -37,7 +37,7 @@ void main() async {
       Zone.current.handleUncaughtError(details.exception, details.stack);
 
   final clients = await ClientManager.getClients();
-  Logs().level = kDebugMode ? Level.debug : Level.warning;
+  Logs().level = kReleaseMode ? Level.info : Level.verbose;
 
   if (PlatformInfos.isMobile) {
     BackgroundPush.clientOnly(clients.first);

lib/pages/chat_list/chat_list.dart

@@ -14,10 +14,8 @@ import 'package:uni_links/uni_links.dart';
 import 'package:vrouter/vrouter.dart';
 
 import 'package:fluffychat/config/app_config.dart';
-import 'package:fluffychat/config/setting_keys.dart';
 import 'package:fluffychat/pages/chat_list/chat_list_view.dart';
 import 'package:fluffychat/utils/fluffy_share.dart';
-import 'package:fluffychat/utils/matrix_sdk_extensions.dart/flutter_matrix_hive_database.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import '../../../utils/account_bundles.dart';
 import '../../main.dart';
@@ -175,11 +173,6 @@ class ChatListController extends State<ChatList> {
 
   void checkBootstrap() async {
     if (!Matrix.of(context).client.encryptionEnabled) return;
-    if ((Matrix.of(context).client.database as FlutterMatrixHiveStore)
-            .get(SettingKeys.dontAskForBootstrapKey) ==
-        true) {
-      return;
-    }
     final crossSigning = await crossSigningCachedFuture;
     final needsBootstrap =
         Matrix.of(context).client.encryption?.crossSigning?.enabled == false ||

lib/utils/client_manager.dart

@@ -10,6 +10,7 @@ import 'package:path_provider/path_provider.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'famedlysdk_store.dart';
 import 'matrix_sdk_extensions.dart/flutter_matrix_hive_database.dart';
+import 'matrix_sdk_extensions.dart/flutter_matrix_sembast_database.dart';
 
 abstract class ClientManager {
   static const String clientNamespace = 'im.fluffychat.store.clients';
@@ -74,10 +75,9 @@ abstract class ClientManager {
           if (PlatformInfos.isMobile || PlatformInfos.isLinux)
             KeyVerificationMethod.emoji,
         },
-        importantStateEvents: <String>{
-          'im.ponies.room_emotes', // we want emotes to work properly
-        },
-        databaseBuilder: FlutterMatrixHiveStore.hiveDatabaseBuilder,
+        importantStateEvents: <String>{'im.ponies.room_emotes'},
+        databaseBuilder: FlutterMatrixSembastDatabase.databaseBuilder,
+        legacyDatabaseBuilder: FlutterMatrixHiveStore.hiveDatabaseBuilder,
         supportedLoginTypes: {
           AuthenticationTypes.password,
           if (PlatformInfos.isMobile || PlatformInfos.isWeb)

lib/utils/matrix_sdk_extensions.dart/flutter_matrix_hive_database.dart

@@ -20,32 +20,9 @@ class FlutterMatrixHiveStore extends FamedlySdkHiveDatabase {
           encryptionCipher: encryptionCipher,
         );
 
-  Box _customBox;
-  String get _customBoxName => '$name.box.custom';
-
   static bool _hiveInitialized = false;
   static const String _hiveCipherStorageKey = 'hive_encryption_key';
 
-  @override
-  Future<void> open() async {
-    await super.open();
-    _customBox = await Hive.openBox(
-      _customBoxName,
-      encryptionCipher: encryptionCipher,
-    );
-    return;
-  }
-
-  @override
-  Future<void> clear() async {
-    await super.clear();
-    await _customBox.deleteAll(_customBox.keys);
-    await _customBox.close();
-  }
-
-  dynamic get(dynamic key) => _customBox.get(key);
-  Future<void> put(dynamic key, dynamic value) => _customBox.put(key, value);
-
   static Future<FamedlySdkHiveDatabase> hiveDatabaseBuilder(
       Client client) async {
     if (!kIsWeb && !_hiveInitialized) {

lib/utils/matrix_sdk_extensions.dart/flutter_matrix_sembast_database.dart

@@ -0,0 +1,214 @@
+import 'dart:convert';
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:flutter/foundation.dart' hide Key;
+import 'package:flutter/services.dart';
+
+import 'package:encrypt/encrypt.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:matrix/matrix.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:sembast/sembast.dart';
+import 'package:sembast/sembast_io.dart';
+import 'package:sembast_web/sembast_web.dart';
+
+import '../platform_infos.dart';
+
+class FlutterMatrixSembastDatabase extends MatrixSembastDatabase {
+  FlutterMatrixSembastDatabase(
+    String name, {
+    SembastCodec codec,
+    String path,
+    DatabaseFactory dbFactory,
+  }) : super(
+          name,
+          codec: codec,
+          path: path,
+          dbFactory: dbFactory,
+        );
+
+  static const String _cipherStorageKey = 'sembast_encryption_key';
+  static const int _cipherStorageKeyLength = 512;
+
+  static Future<FlutterMatrixSembastDatabase> databaseBuilder(
+      Client client) async {
+    Logs().d('Open Sembast...');
+    SembastCodec codec;
+    try {
+      // Workaround for secure storage is calling Platform.operatingSystem on web
+      if (kIsWeb) throw MissingPluginException();
+
+      const secureStorage = FlutterSecureStorage();
+      final containsEncryptionKey =
+          await secureStorage.containsKey(key: _cipherStorageKey);
+      if (!containsEncryptionKey) {
+        final key = SecureRandom(_cipherStorageKeyLength).base64;
+        await secureStorage.write(
+          key: _cipherStorageKey,
+          value: key,
+        );
+      }
+
+      // workaround for if we just wrote to the key and it still doesn't exist
+      final rawEncryptionKey = await secureStorage.read(key: _cipherStorageKey);
+      if (rawEncryptionKey == null) throw MissingPluginException();
+
+      codec = getEncryptSembastCodec(password: rawEncryptionKey);
+    } on MissingPluginException catch (_) {
+      Logs().i('Sembast encryption is not supported on this platform');
+    }
+
+    final db = FlutterMatrixSembastDatabase(
+      client.clientName,
+      codec: codec,
+      path: await _findDatabasePath(client),
+      dbFactory: kIsWeb ? databaseFactoryWeb : databaseFactoryIo,
+    );
+    try {
+      await db.open();
+      Logs().d('Sembast is ready');
+    } catch (e, s) {
+      Logs().e('Unable to open Sembast. Delete and try again...', e, s);
+      await db.clear();
+      await db.open();
+    }
+    return db;
+  }
+
+  static Future<String> _findDatabasePath(Client client) async {
+    String path = client.clientName;
+    if (!kIsWeb) {
+      Directory directory;
+      try {
+        directory = await getApplicationSupportDirectory();
+      } catch (_) {
+        try {
+          directory = await getLibraryDirectory();
+        } catch (_) {
+          directory = Directory.current;
+        }
+      }
+      path = '${directory.path}${client.clientName}.db';
+    }
+    Logs().i('Use database path: "$path"');
+    return path;
+  }
+
+  @override
+  int get maxFileSize => supportsFileStoring ? 100 * 1024 * 1024 : 0;
+  @override
+  bool get supportsFileStoring => (PlatformInfos.isIOS ||
+      PlatformInfos.isAndroid ||
+      PlatformInfos.isDesktop);
+
+  Future<String> _getFileStoreDirectory() async {
+    try {
+      try {
+        return (await getApplicationSupportDirectory()).path;
+      } catch (_) {
+        return (await getApplicationDocumentsDirectory()).path;
+      }
+    } catch (_) {
+      return (await getDownloadsDirectory()).path;
+    }
+  }
+
+  @override
+  Future<Uint8List> getFile(Uri mxcUri) async {
+    if (!supportsFileStoring) return null;
+    final tempDirectory = await _getFileStoreDirectory();
+    final file =
+        File('$tempDirectory/${Uri.encodeComponent(mxcUri.toString())}');
+    if (await file.exists() == false) return null;
+    final bytes = await file.readAsBytes();
+    return bytes;
+  }
+
+  @override
+  Future storeFile(Uri mxcUri, Uint8List bytes, int time) async {
+    if (!supportsFileStoring) return null;
+    final tempDirectory = await _getFileStoreDirectory();
+    final file =
+        File('$tempDirectory/${Uri.encodeComponent(mxcUri.toString())}');
+    if (await file.exists()) return;
+    await file.writeAsBytes(bytes);
+    return;
+  }
+}
+
+class _EncryptEncoder extends Converter<Map<String, dynamic>, String> {
+  final String key;
+  final String signature;
+  _EncryptEncoder(this.key, this.signature);
+
+  @override
+  String convert(Map<String, dynamic> input) {
+    String encoded;
+    switch (signature) {
+      case "Salsa20":
+        encoded = Encrypter(Salsa20(Key.fromUtf8(key)))
+            .encrypt(json.encode(input), iv: IV.fromLength(8))
+            .base64;
+        break;
+      case "AES":
+        encoded = Encrypter(AES(Key.fromUtf8(key)))
+            .encrypt(json.encode(input), iv: IV.fromLength(16))
+            .base64;
+        break;
+      default:
+        throw FormatException('invalid $signature');
+        break;
+    }
+    return encoded;
+  }
+}
+
+class _EncryptDecoder extends Converter<String, Map<String, dynamic>> {
+  final String key;
+  final String signature;
+  _EncryptDecoder(this.key, this.signature);
+
+  @override
+  Map<String, dynamic> convert(String input) {
+    dynamic decoded;
+    switch (signature) {
+      case "Salsa20":
+        decoded = json.decode(Encrypter(Salsa20(Key.fromUtf8(key)))
+            .decrypt64(input, iv: IV.fromLength(8)));
+        break;
+      case "AES":
+        decoded = json.decode(Encrypter(AES(Key.fromUtf8(key)))
+            .decrypt64(input, iv: IV.fromLength(16)));
+        break;
+      default:
+        break;
+    }
+    if (decoded is Map) {
+      return decoded.cast<String, dynamic>();
+    }
+    throw FormatException('invalid input $input');
+  }
+}
+
+class _EncryptCodec extends Codec<Map<String, dynamic>, String> {
+  final String signature;
+  _EncryptEncoder _encoder;
+  _EncryptDecoder _decoder;
+  _EncryptCodec(String password, this.signature) {
+    _encoder = _EncryptEncoder(password, signature);
+    _decoder = _EncryptDecoder(password, signature);
+  }
+
+  @override
+  Converter<String, Map<String, dynamic>> get decoder => _decoder;
+
+  @override
+  Converter<Map<String, dynamic>, String> get encoder => _encoder;
+}
+
+// Salsa20 (16 length key required) or AES (32 length key required)
+SembastCodec getEncryptSembastCodec(
+        {@required String password, String signature = "Salsa20"}) =>
+    SembastCodec(
+        signature: signature, codec: _EncryptCodec(password, signature));

pubspec.lock

@@ -64,6 +64,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.3.0"
+  asn1lib:
+    dependency: transitive
+    description:
+      name: asn1lib
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   async:
     dependency: transitive
     description:
@@ -260,6 +267,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.7"
+  encrypt:
+    dependency: "direct main"
+    description:
+      name: encrypt
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.1"
   fake_async:
     dependency: transitive
     description:
@@ -630,6 +644,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.0"
+  idb_shim:
+    dependency: transitive
+    description:
+      name: idb_shim
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
   image:
     dependency: transitive
     description:
@@ -752,9 +773,11 @@ packages:
   matrix:
     dependency: "direct main"
     description:
-      name: matrix
-      url: "https://pub.dartlang.org"
-    source: hosted
+      path: "."
+      ref: "krille/sembast"
+      resolved-ref: d3398eb9d5ea77e00c59a4a75092779e2640c358
+      url: "git@gitlab.com:famedly/company/frontend/famedlysdk.git"
+    source: git
     version: "0.7.0-nullsafety.5"
   matrix_api_lite:
     dependency: transitive
@@ -1003,6 +1026,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.0"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.4.0"
   pool:
     dependency: transitive
     description:
@@ -1129,6 +1159,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  sembast:
+    dependency: transitive
+    description:
+      name: sembast
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.1"
+  sembast_web:
+    dependency: "direct main"
+    description:
+      name: sembast_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1+1"
   sentry:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -18,6 +18,7 @@ dependencies:
   emoji_picker_flutter: ^1.0.7
   #fcm_shared_isolate:
   #  git: https://gitlab.com/famedly/libraries/fcm_shared_isolate.git
+  encrypt: ^5.0.1
   file_picker_cross: ^4.5.0
   flutter:
     sdk: flutter
@@ -61,6 +62,7 @@ dependencies:
   receive_sharing_intent: ^1.4.5
   record: ^3.0.0
   scroll_to_index: ^2.1.0
+  sembast_web: ^2.0.1+1
   sentry: ^6.0.1
   share: ^2.0.4
   slugify: ^2.0.0
@@ -112,4 +114,8 @@ dependency_overrides:
     hosted:
       name: geolocator_android
       url: https://hanntech-gmbh.gitlab.io/free2pass/flutter-geolocator-floss
+  matrix:
+    git:
+      url: git@gitlab.com:famedly/company/frontend/famedlysdk.git
+      ref: krille/sembast
   provider: 5.0.0