115 lines
4.1 KiB
Dart
115 lines
4.1 KiB
Dart
/*
|
|
* Famedly Matrix SDK
|
|
* Copyright (C) 2019, 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:matrix/encryption/utils/stored_inbound_group_session.dart';
|
|
import 'package:matrix_api_lite/src/utils/filter_map_extension.dart';
|
|
import 'package:olm/olm.dart' as olm;
|
|
|
|
import '../../matrix.dart';
|
|
|
|
class SessionKey {
|
|
/// The raw json content of the key
|
|
Map<String, dynamic> content = <String, dynamic>{};
|
|
|
|
/// Map of stringified-index to event id, so that we can detect replay attacks
|
|
Map<String, String> indexes;
|
|
|
|
/// Map of userId to map of deviceId to index, that we know that device receivied, e.g. sending it ourself.
|
|
/// Used for automatically answering key requests
|
|
Map<String, Map<String, int>> allowedAtIndex;
|
|
|
|
/// Underlying olm [InboundGroupSession] object
|
|
olm.InboundGroupSession? inboundGroupSession;
|
|
|
|
/// Key for libolm pickle / unpickle
|
|
final String key;
|
|
|
|
/// Forwarding keychain
|
|
List<String> get forwardingCurve25519KeyChain =>
|
|
(content['forwarding_curve25519_key_chain'] != null
|
|
? List<String>.from(content['forwarding_curve25519_key_chain'])
|
|
: null) ??
|
|
<String>[];
|
|
|
|
/// Claimed keys of the original sender
|
|
late Map<String, String> senderClaimedKeys;
|
|
|
|
/// Sender curve25519 key
|
|
String senderKey;
|
|
|
|
/// Is this session valid?
|
|
bool get isValid => inboundGroupSession != null;
|
|
|
|
/// roomId for this session
|
|
String roomId;
|
|
|
|
/// Id of this session
|
|
String sessionId;
|
|
|
|
SessionKey(
|
|
{required this.content,
|
|
required this.inboundGroupSession,
|
|
required this.key,
|
|
Map<String, String>? indexes,
|
|
Map<String, Map<String, int>>? allowedAtIndex,
|
|
required this.roomId,
|
|
required this.sessionId,
|
|
required this.senderKey,
|
|
required this.senderClaimedKeys})
|
|
: indexes = indexes ?? <String, String>{},
|
|
allowedAtIndex = allowedAtIndex ?? <String, Map<String, int>>{};
|
|
|
|
SessionKey.fromDb(StoredInboundGroupSession dbEntry, String key)
|
|
: key = key,
|
|
content = Event.getMapFromPayload(dbEntry.content),
|
|
indexes = Event.getMapFromPayload(dbEntry.indexes)
|
|
.catchMap((k, v) => MapEntry<String, String>(k, v)),
|
|
allowedAtIndex = Event.getMapFromPayload(dbEntry.allowedAtIndex)
|
|
.catchMap((k, v) => MapEntry(k, Map<String, int>.from(v))),
|
|
roomId = dbEntry.roomId,
|
|
sessionId = dbEntry.sessionId,
|
|
senderKey = dbEntry.senderKey,
|
|
inboundGroupSession = olm.InboundGroupSession() {
|
|
final parsedSenderClaimedKeys =
|
|
Event.getMapFromPayload(dbEntry.senderClaimedKeys)
|
|
.catchMap((k, v) => MapEntry<String, String>(k, v));
|
|
// we need to try...catch as the map used to be <String, int> and that will throw an error.
|
|
senderClaimedKeys = (parsedSenderClaimedKeys.isNotEmpty)
|
|
? parsedSenderClaimedKeys
|
|
: (content['sender_claimed_keys'] is Map
|
|
? content['sender_claimed_keys']
|
|
.catchMap((k, v) => MapEntry<String, String>(k, v))
|
|
: (content['sender_claimed_ed25519_key'] is String
|
|
? <String, String>{
|
|
'ed25519': content['sender_claimed_ed25519_key']
|
|
}
|
|
: <String, String>{}));
|
|
|
|
try {
|
|
inboundGroupSession!.unpickle(key, dbEntry.pickle);
|
|
} catch (e, s) {
|
|
dispose();
|
|
Logs().e('[LibOlm] Unable to unpickle inboundGroupSession', e, s);
|
|
}
|
|
}
|
|
|
|
void dispose() {
|
|
inboundGroupSession?.free();
|
|
inboundGroupSession = null;
|
|
}
|
|
}
|