matrix-0.8.13/lib/encryption/utils/olm_session.dart
2022-04-18 14:27:08 +05:30

61 lines
1.8 KiB
Dart

/*
* Famedly Matrix SDK
* Copyright (C) 2020, 2021 Famedly GmbH
*
* 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 <https://www.gnu.org/licenses/>.
*/
import 'package:olm/olm.dart' as olm;
import '../../matrix.dart';
class OlmSession {
String identityKey;
String? sessionId;
olm.Session? session;
DateTime? lastReceived;
final String key;
String? get pickledSession => session?.pickle(key);
bool get isValid => session != null;
OlmSession({
required this.key,
required this.identityKey,
required this.sessionId,
required this.session,
required this.lastReceived,
});
OlmSession.fromJson(Map<String, dynamic> dbEntry, String key)
: key = key,
identityKey = dbEntry['identity_key'] ?? '' {
session = olm.Session();
try {
session!.unpickle(key, dbEntry['pickle']);
sessionId = dbEntry['session_id'];
lastReceived =
DateTime.fromMillisecondsSinceEpoch(dbEntry['last_received'] ?? 0);
assert(sessionId == session!.session_id());
} catch (e, s) {
Logs().e('[LibOlm] Could not unpickle olm session', e, s);
dispose();
}
}
void dispose() {
session?.free();
session = null;
}
}