famedlysdk/lib/encryption/utils/olm_session.dart

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/*
* Famedly Matrix SDK
* Copyright (C) 2020 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 '../../src/database/database.dart' show DbOlmSessions;
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.fromDb(DbOlmSessions dbEntry, String key) : key = key {
session = olm.Session();
try {
session.unpickle(key, dbEntry.pickle);
identityKey = dbEntry.identityKey;
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sessionId = dbEntry.sessionId;
lastReceived =
dbEntry.lastReceived ?? DateTime.fromMillisecondsSinceEpoch(0);
assert(sessionId == session.session_id());
} catch (e) {
print('[LibOlm] Could not unpickle olm session: ' + e.toString());
dispose();
}
}
void dispose() {
session?.free();
session = null;
}
}