matrix-dart-sdk/lib/encryption/utils/olm_session.dart

62 lines
1.7 KiB
Dart

// @dart=2.9
/*
* 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({
this.key,
this.identityKey,
this.sessionId,
this.session,
this.lastReceived,
});
OlmSession.fromJson(Map<String, dynamic> dbEntry, String key) : key = key {
session = olm.Session();
try {
session.unpickle(key, dbEntry['pickle']);
identityKey = dbEntry['identity_key'];
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;
}
}