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MrbWebLibre/app/lib/features/user/domain/services/local_authentication.dart
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2025-07-25 23:44:40 +02:00

77 lines
2.3 KiB
Dart

/*
* Copyright (c) 2024-2025 Fabian Freund.
*
* This file is part of WebLibre
* (see https://weblibre.eu).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:local_auth/local_auth.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';
import 'package:weblibre/core/logger.dart';
import 'package:weblibre/features/geckoview/features/tabs/data/models/container_data.dart';
part 'local_authentication.g.dart';
@Riverpod(keepAlive: true)
class LocalAuthenticationService extends _$LocalAuthenticationService {
final _auth = LocalAuthentication();
final _cache = <String, (DateTime, ContainerAuthSettings)>{};
bool _cacheAuth(String authKey) {
final auth = _cache[authKey];
if (auth != null && auth.$2.lockTimeout != null) {
return DateTime.now().difference(auth.$1) < auth.$2.lockTimeout!;
}
return false;
}
void evictCacheOnBackground() {
_cache.removeWhere((key, value) => value.$2.lockOnAppBackground);
}
Future<bool> authenticate({
required String authKey,
required String localizedReason,
ContainerAuthSettings? settings,
bool useAuthCache = false,
}) async {
try {
var result = useAuthCache && _cacheAuth(authKey);
if (!result) {
result = await _auth.authenticate(localizedReason: localizedReason);
}
if (result && settings != null) {
_cache[authKey] = (DateTime.now(), settings);
}
return result;
} on PlatformException catch (e, s) {
logger.e('Could not authenticate', error: e, stackTrace: s);
return false;
}
}
@override
Future<bool> build() {
return _auth.canCheckBiometrics;
}
}