mirror of
https://github.com/twonlyapp/twonly-app.git
synced 2026-01-15 09:08:40 +00:00
685 lines
23 KiB
Dart
685 lines
23 KiB
Dart
// ignore_for_file: avoid_dynamic_calls, strict_raw_type
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import 'dart:async';
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import 'dart:collection';
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import 'dart:convert';
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import 'dart:io';
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import 'dart:math';
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import 'package:connectivity_plus/connectivity_plus.dart';
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import 'package:drift/drift.dart';
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import 'package:fixnum/fixnum.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter_secure_storage/flutter_secure_storage.dart';
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// ignore: implementation_imports
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import 'package:libsignal_protocol_dart/src/ecc/ed25519.dart';
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import 'package:mutex/mutex.dart';
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import 'package:package_info_plus/package_info_plus.dart';
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import 'package:twonly/globals.dart';
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import 'package:twonly/src/constants/secure_storage_keys.dart';
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import 'package:twonly/src/database/twonly_database.dart';
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import 'package:twonly/src/model/protobuf/api/websocket/client_to_server.pbserver.dart';
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import 'package:twonly/src/model/protobuf/api/websocket/error.pb.dart';
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import 'package:twonly/src/model/protobuf/api/websocket/server_to_client.pb.dart'
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as server;
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import 'package:twonly/src/model/protobuf/api/websocket/server_to_client.pbserver.dart';
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import 'package:twonly/src/services/api/media_download.dart';
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import 'package:twonly/src/services/api/media_upload.dart';
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import 'package:twonly/src/services/api/messages.dart';
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import 'package:twonly/src/services/api/server_messages.dart';
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import 'package:twonly/src/services/api/utils.dart';
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import 'package:twonly/src/services/fcm.service.dart';
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import 'package:twonly/src/services/flame.service.dart';
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import 'package:twonly/src/services/notifications/pushkeys.notifications.dart';
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import 'package:twonly/src/services/signal/identity.signal.dart';
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import 'package:twonly/src/services/signal/prekeys.signal.dart';
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import 'package:twonly/src/services/signal/utils.signal.dart';
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import 'package:twonly/src/utils/keyvalue.dart';
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import 'package:twonly/src/utils/log.dart';
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import 'package:twonly/src/utils/misc.dart';
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import 'package:twonly/src/utils/storage.dart';
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import 'package:web_socket_channel/io.dart';
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import 'package:web_socket_channel/web_socket_channel.dart';
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final lockConnecting = Mutex();
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final lockRetransStore = Mutex();
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/// The ApiProvider is responsible for communicating with the server.
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/// It handles errors and does automatically tries to reconnect on
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/// errors or network changes.
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class ApiService {
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ApiService();
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final String apiHost = kDebugMode ? '10.99.0.140:3030' : 'api.twonly.eu';
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final String apiSecure = kDebugMode ? '' : 's';
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bool appIsOutdated = false;
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bool isAuthenticated = false;
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// reconnection params
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Timer? reconnectionTimer;
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int _reconnectionDelay = 5;
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final HashMap<Int64, server.ServerToClient?> messagesV0 = HashMap();
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IOWebSocketChannel? _channel;
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// ignore: cancel_subscriptions
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StreamSubscription<List<ConnectivityResult>>? connectivitySubscription;
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Future<bool> _connectTo(String apiUrl) async {
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if (appIsOutdated) return false;
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try {
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final channel = IOWebSocketChannel.connect(
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Uri.parse(apiUrl),
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);
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_channel = channel;
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_channel!.stream.listen(_onData, onDone: _onDone, onError: _onError);
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await _channel!.ready;
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Log.info('websocket connected to $apiUrl');
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return true;
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} on WebSocketChannelException catch (e) {
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if (!e.message
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.toString()
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.contains('No address associated with hostname')) {
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Log.error('could not connect to api got: $e');
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}
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return false;
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}
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}
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// Function is called after the user is authenticated at the server
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Future<void> onAuthenticated() async {
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isAuthenticated = true;
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await initFCMAfterAuthenticated();
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globalCallbackConnectionState(isConnected: true);
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if (!globalIsAppInBackground) {
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unawaited(retransmitRawBytes());
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unawaited(tryTransmitMessages());
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unawaited(retryMediaUpload(false));
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unawaited(tryDownloadAllMediaFiles());
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unawaited(notifyContactsAboutProfileChange());
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twonlyDB.markUpdated();
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unawaited(syncFlameCounters());
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unawaited(setupNotificationWithUsers());
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unawaited(signalHandleNewServerConnection());
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}
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}
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Future<void> onConnected() async {
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await authenticate();
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_reconnectionDelay = 5;
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globalCallbackConnectionState(isConnected: true);
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}
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Future<void> onClosed() async {
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_channel = null;
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isAuthenticated = false;
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globalCallbackConnectionState(isConnected: false);
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await twonlyDB.messagesDao.resetPendingDownloadState();
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}
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Future<void> startReconnectionTimer() async {
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reconnectionTimer?.cancel();
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reconnectionTimer ??= Timer(Duration(seconds: _reconnectionDelay), () {
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reconnectionTimer = null;
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connect(force: true);
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});
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_reconnectionDelay += 5;
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}
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Future<void> close(Function callback) async {
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Log.info('closing websocket connection');
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if (_channel != null) {
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await _channel!.sink.close();
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await onClosed();
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callback();
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return;
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}
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callback();
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}
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Future<void> listenToNetworkChanges() async {
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if (connectivitySubscription != null) {
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return;
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}
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connectivitySubscription = Connectivity()
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.onConnectivityChanged
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.listen((List<ConnectivityResult> result) {
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if (!result.contains(ConnectivityResult.none)) {
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connect(force: true);
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}
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// Received changes in available connectivity types!
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});
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}
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Future<bool> connect({bool force = false}) async {
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if (reconnectionTimer != null && !force) {
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return false;
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}
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reconnectionTimer?.cancel();
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reconnectionTimer = null;
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final user = await getUser();
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if (user != null && user.isDemoUser) {
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globalCallbackConnectionState(isConnected: true);
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return false;
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}
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return lockConnecting.protect<bool>(() async {
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if (_channel != null) {
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return true;
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}
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// ensure that the connect function is not called again by the timer.
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reconnectionTimer?.cancel();
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reconnectionTimer = null;
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isAuthenticated = false;
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final apiUrl = 'ws$apiSecure://$apiHost/api/client';
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Log.info('connecting to $apiUrl');
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if (await _connectTo(apiUrl)) {
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await onConnected();
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return true;
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}
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return false;
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});
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}
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bool get isConnected => _channel != null && _channel!.closeCode != null;
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void _onDone() {
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Log.info('websocket closed without error');
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onClosed();
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}
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void _onError(dynamic e) {
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Log.error('websocket error: $e');
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onClosed();
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}
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Future<void> _onData(dynamic msgBuffer) async {
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try {
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final msg = server.ServerToClient.fromBuffer(msgBuffer as Uint8List);
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if (msg.v0.hasResponse()) {
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await removeFromRetransmissionBuffer(msg.v0.seq);
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messagesV0[msg.v0.seq] = msg;
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} else {
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await handleServerMessage(msg);
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}
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} catch (e) {
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Log.error('Error parsing the servers message: $e');
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}
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}
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Future<server.ServerToClient?> _waitForResponse(Int64 seq) async {
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final startTime = DateTime.now();
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const timeout = Duration(seconds: 20);
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while (true) {
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if (messagesV0[seq] != null) {
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final tmp = messagesV0[seq];
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messagesV0.remove(seq);
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return tmp;
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}
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if (DateTime.now().difference(startTime) > timeout) {
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Log.error('Timeout for message $seq');
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return null;
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}
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await Future.delayed(const Duration(milliseconds: 10));
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}
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}
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Future<void> sendResponse(ClientToServer response) async {
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if (_channel != null) {
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_channel!.sink.add(response.writeToBuffer());
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}
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}
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Future<Map<String, dynamic>> getRetransmission() async {
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return (await KeyValueStore.get('rawbytes-to-retransmit')) ?? {};
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}
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Future<void> retransmitRawBytes() async {
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await lockRetransStore.protect(() async {
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final retransmit = await getRetransmission();
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if (retransmit.keys.isEmpty) return;
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Log.info('retransmitting ${retransmit.keys.length} raw bytes messages');
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var gotError = false;
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for (final seq in retransmit.keys) {
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try {
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_channel!.sink.add(base64Decode(retransmit[seq] as String));
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} catch (e) {
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gotError = true;
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Log.error('$e');
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}
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}
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if (!gotError) {
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await KeyValueStore.put('rawbytes-to-retransmit', {});
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}
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});
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}
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Future<void> addToRetransmissionBuffer(Int64 seq, Uint8List bytes) async {
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await lockRetransStore.protect(() async {
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final retransmit = await getRetransmission();
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retransmit[seq.toString()] = base64Encode(bytes);
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await KeyValueStore.put('rawbytes-to-retransmit', retransmit);
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});
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}
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Future<void> removeFromRetransmissionBuffer(Int64 seq) async {
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await lockRetransStore.protect(() async {
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final retransmit = await getRetransmission();
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if (retransmit.isEmpty) return;
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retransmit.remove(seq.toString());
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await KeyValueStore.put('rawbytes-to-retransmit', retransmit);
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});
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}
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Future<Result> sendRequestSync(
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ClientToServer request, {
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bool authenticated = true,
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bool ensureRetransmission = false,
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int? contactId,
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}) async {
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var seq = Int64(Random().nextInt(4294967296));
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while (messagesV0.containsKey(seq)) {
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seq = Int64(Random().nextInt(4294967296));
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}
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request.v0.seq = seq;
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final requestBytes = request.writeToBuffer();
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if (ensureRetransmission) {
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await addToRetransmissionBuffer(seq, requestBytes);
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}
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if (_channel == null) {
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Log.warn('sending request while api is not connected');
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if (!await connect()) {
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return Result.error(ErrorCode.InternalError);
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}
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if (_channel == null) {
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return Result.error(ErrorCode.InternalError);
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}
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}
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_channel!.sink.add(requestBytes);
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final res = asResult(await _waitForResponse(seq));
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if (res.isError) {
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Log.error('got error from server: ${res.error}');
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if (res.error == ErrorCode.AppVersionOutdated) {
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globalCallbackAppIsOutdated();
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Log.error('App Version is OUTDATED.');
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appIsOutdated = true;
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await close(() {});
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return Result.error(ErrorCode.InternalError);
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}
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if (res.error == ErrorCode.NewDeviceRegistered) {
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globalCallbackNewDeviceRegistered();
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Log.error('Device is disabled, as a newer device restore twonly Safe.');
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appIsOutdated = true;
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await close(() {});
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return Result.error(ErrorCode.InternalError);
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}
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if (res.error == ErrorCode.SessionNotAuthenticated) {
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isAuthenticated = false;
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if (authenticated) {
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await authenticate();
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if (isAuthenticated) {
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// this will send the request one more time.
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return sendRequestSync(request, authenticated: false);
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} else {
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Log.error('session is not authenticated');
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return Result.error(ErrorCode.InternalError);
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}
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}
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}
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if (res.error == ErrorCode.UserIdNotFound && contactId != null) {
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Log.error('Contact deleted their account $contactId.');
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await twonlyDB.contactsDao.updateContact(
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contactId,
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const ContactsCompanion(
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deleted: Value(true),
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),
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);
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}
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}
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return res;
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}
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Future<bool> tryAuthenticateWithToken(int userId) async {
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const storage = FlutterSecureStorage();
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final apiAuthToken =
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await storage.read(key: SecureStorageKeys.apiAuthToken);
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final user = await getUser();
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if (apiAuthToken != null && user != null) {
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final authenticate = Handshake_Authenticate()
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..userId = Int64(userId)
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..appVersion = (await PackageInfo.fromPlatform()).version
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..deviceId = Int64(user.deviceId)
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..authToken = base64Decode(apiAuthToken);
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final handshake = Handshake()..authenticate = authenticate;
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final req = createClientToServerFromHandshake(handshake);
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final result = await sendRequestSync(req, authenticated: false);
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if (result.isSuccess) {
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final ok = result.value as server.Response_Ok;
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if (ok.hasAuthenticated()) {
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final authenticated = ok.authenticated;
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await updateUserdata((user) {
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user.subscriptionPlan = authenticated.plan;
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return user;
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});
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globalCallbackUpdatePlan(authenticated.plan);
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}
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Log.info('websocket is authenticated');
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unawaited(onAuthenticated());
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return true;
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}
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if (result.isError) {
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if (result.error != ErrorCode.AuthTokenNotValid) {
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Log.error('got error while authenticating to the server', result);
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return false;
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}
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}
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}
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return false;
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}
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Future<void> authenticate() async {
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if (isAuthenticated) return;
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if (await getSignalIdentity() == null) {
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return;
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}
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final userData = await getUser();
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if (userData == null) return;
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if (await tryAuthenticateWithToken(userData.userId)) {
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return;
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}
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final handshake = Handshake()
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..getauthchallenge = Handshake_GetAuthChallenge();
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final req = createClientToServerFromHandshake(handshake);
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final result = await sendRequestSync(req, authenticated: false);
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if (result.isError) {
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Log.error('could not request auth challenge', result);
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return;
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}
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final challenge = result.value.authchallenge;
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var privKey = (await getSignalIdentityKeyPair())?.getPrivateKey();
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if (privKey == null) return;
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final random = getRandomUint8List(32);
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final signature = sign(privKey.serialize(), challenge as Uint8List, random);
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privKey = null;
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final getAuthToken = Handshake_GetAuthToken()
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..response = signature
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..userId = Int64(userData.userId);
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final getauthtoken = Handshake()..getauthtoken = getAuthToken;
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final req2 = createClientToServerFromHandshake(getauthtoken);
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final result2 = await sendRequestSync(req2, authenticated: false);
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if (result2.isError) {
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Log.error('could not send auth response: ${result2.error}');
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return;
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}
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final apiAuthToken = result2.value.authtoken as Uint8List;
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final apiAuthTokenB64 = base64Encode(apiAuthToken);
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const storage = FlutterSecureStorage();
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await storage.write(
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key: SecureStorageKeys.apiAuthToken, value: apiAuthTokenB64);
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await tryAuthenticateWithToken(userData.userId);
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}
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Future<Result> register(String username, String? inviteCode) async {
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final signalIdentity = await getSignalIdentity();
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if (signalIdentity == null) {
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return Result.error(ErrorCode.InternalError);
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}
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final signalStore = await getSignalStoreFromIdentity(signalIdentity);
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final signedPreKey = (await signalStore.loadSignedPreKeys())[0];
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final register = Handshake_Register()
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..username = username
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..publicIdentityKey =
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(await signalStore.getIdentityKeyPair()).getPublicKey().serialize()
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..registrationId = Int64(signalIdentity.registrationId)
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..signedPrekey = signedPreKey.getKeyPair().publicKey.serialize()
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..signedPrekeySignature = signedPreKey.signature
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..signedPrekeyId = Int64(signedPreKey.id)
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..isIos = Platform.isIOS;
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if (inviteCode != null && inviteCode != '') {
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register.inviteCode = inviteCode;
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}
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final handshake = Handshake()..register = register;
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final req = createClientToServerFromHandshake(handshake);
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return sendRequestSync(req);
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}
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Future<Result> getUsername(int userId) async {
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final get = ApplicationData_GetUserById()..userId = Int64(userId);
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final appData = ApplicationData()..getuserbyid = get;
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final req = createClientToServerFromApplicationData(appData);
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return sendRequestSync(req, contactId: userId);
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}
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Future<Result> downloadDone(List<int> token) async {
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final get = ApplicationData_DownloadDone()..downloadToken = token;
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final appData = ApplicationData()..downloaddone = get;
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final req = createClientToServerFromApplicationData(appData);
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return sendRequestSync(req, ensureRetransmission: true);
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}
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Future<Result> getCurrentLocation() async {
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final get = ApplicationData_GetLocation();
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final appData = ApplicationData()..getlocation = get;
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final req = createClientToServerFromApplicationData(appData);
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return sendRequestSync(req);
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}
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Future<Result> getUserData(String username) async {
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final get = ApplicationData_GetUserByUsername()..username = username;
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final appData = ApplicationData()..getuserbyusername = get;
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final req = createClientToServerFromApplicationData(appData);
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return sendRequestSync(req);
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}
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Future<Response_PlanBallance?> getPlanBallance() async {
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final get = ApplicationData_GetCurrentPlanInfos();
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final appData = ApplicationData()..getcurrentplaninfos = get;
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final req = createClientToServerFromApplicationData(appData);
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final res = await sendRequestSync(req);
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if (res.isSuccess) {
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final ok = res.value as server.Response_Ok;
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if (ok.hasPlanballance()) {
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return ok.planballance;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Future<Response_Vouchers?> getVoucherList() async {
|
|
final get = ApplicationData_GetVouchers();
|
|
final appData = ApplicationData()..getvouchers = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
final res = await sendRequestSync(req);
|
|
if (res.isSuccess) {
|
|
final ok = res.value as server.Response_Ok;
|
|
if (ok.hasVouchers()) {
|
|
return ok.vouchers;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Future<List<Response_AddAccountsInvite>?> getAdditionalUserInvites() async {
|
|
final get = ApplicationData_GetAddAccountsInvites();
|
|
final appData = ApplicationData()..getaddaccountsinvites = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
final res = await sendRequestSync(req);
|
|
if (res.isSuccess) {
|
|
final ok = res.value as server.Response_Ok;
|
|
if (ok.hasAddaccountsinvites()) {
|
|
return ok.addaccountsinvites.invites;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Future<Result> updatePlanOptions(bool autoRenewal) async {
|
|
final get = ApplicationData_UpdatePlanOptions()..autoRenewal = autoRenewal;
|
|
final appData = ApplicationData()..updateplanoptions = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> removeAdditionalUser(Int64 userId) async {
|
|
final get = ApplicationData_RemoveAdditionalUser()..userId = userId;
|
|
final appData = ApplicationData()..removeadditionaluser = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req, contactId: userId.toInt());
|
|
}
|
|
|
|
Future<Result> buyVoucher(int valueInCents) async {
|
|
final get = ApplicationData_CreateVoucher()..valueCents = valueInCents;
|
|
final appData = ApplicationData()..createvoucher = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> switchToPayedPlan(
|
|
String planId, bool payMonthly, bool autoRenewal) async {
|
|
final get = ApplicationData_SwitchToPayedPlan()
|
|
..planId = planId
|
|
..payMonthly = payMonthly
|
|
..autoRenewal = autoRenewal;
|
|
final appData = ApplicationData()..switchtopayedplan = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> redeemVoucher(String voucher) async {
|
|
final get = ApplicationData_RedeemVoucher()..voucher = voucher;
|
|
final appData = ApplicationData()..redeemvoucher = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> reportUser(int userId, String reason) async {
|
|
final get = ApplicationData_ReportUser()
|
|
..reportedUserId = Int64(userId)
|
|
..reason = reason;
|
|
final appData = ApplicationData()..reportuser = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> deleteAccount() async {
|
|
final get = ApplicationData_DeleteAccount();
|
|
final appData = ApplicationData()..deleteaccount = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> redeemUserInviteCode(String inviteCode) async {
|
|
final get = ApplicationData_RedeemAdditionalCode()..inviteCode = inviteCode;
|
|
final appData = ApplicationData()..redeemadditionalcode = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> updateFCMToken(String googleFcm) async {
|
|
final get = ApplicationData_UpdateGoogleFcmToken()..googleFcm = googleFcm;
|
|
final appData = ApplicationData()..updategooglefcmtoken = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Result> updateSignedPreKey(
|
|
int signedPreKeyId,
|
|
Uint8List signedPreKey,
|
|
Uint8List signedPreKeySignature,
|
|
) async {
|
|
final get = ApplicationData_UpdateSignedPreKey()
|
|
..signedPrekeyId = Int64(signedPreKeyId)
|
|
..signedPrekey = signedPreKey
|
|
..signedPrekeySignature = signedPreKeySignature;
|
|
final appData = ApplicationData()..updatesignedprekey = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req);
|
|
}
|
|
|
|
Future<Response_SignedPreKey?> getSignedKeyByUserId(int userId) async {
|
|
final get = ApplicationData_GetSignedPreKeyByUserId()
|
|
..userId = Int64(userId);
|
|
final appData = ApplicationData()..getsignedprekeybyuserid = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
final res = await sendRequestSync(req, contactId: userId);
|
|
if (res.isSuccess) {
|
|
final ok = res.value as server.Response_Ok;
|
|
if (ok.hasSignedprekey()) {
|
|
return ok.signedprekey;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Future<OtherPreKeys?> getPreKeysByUserId(int userId) async {
|
|
final get = ApplicationData_GetPrekeysByUserId()..userId = Int64(userId);
|
|
final appData = ApplicationData()..getprekeysbyuserid = get;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
final res = await sendRequestSync(req, contactId: userId);
|
|
if (res.isSuccess) {
|
|
final ok = res.value as server.Response_Ok;
|
|
if (ok.hasUserdata()) {
|
|
final data = ok.userdata;
|
|
if (data.hasSignedPrekey() &&
|
|
data.hasSignedPrekeyId() &&
|
|
data.hasSignedPrekeySignature()) {
|
|
return OtherPreKeys(
|
|
preKeys: ok.userdata.prekeys,
|
|
signedPreKey: data.signedPrekey,
|
|
signedPreKeyId: data.signedPrekeyId.toInt(),
|
|
signedPreKeySignature: data.signedPrekeySignature,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Future<Result> sendTextMessage(
|
|
int target, Uint8List msg, List<int>? pushData) async {
|
|
final testMessage = ApplicationData_TextMessage()
|
|
..userId = Int64(target)
|
|
..body = msg;
|
|
|
|
if (pushData != null) {
|
|
testMessage.pushData = pushData;
|
|
}
|
|
|
|
final appData = ApplicationData()..textmessage = testMessage;
|
|
final req = createClientToServerFromApplicationData(appData);
|
|
return sendRequestSync(req, contactId: target);
|
|
}
|
|
}
|