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fix: remove deprecated sender_key occurrences

This commit is contained in:
Malin Errenst 2023-05-08 09:12:14 +00:00 committed by Nicolas Werner
parent 684b8bd302
commit cc377202da
6 changed files with 110 additions and 125 deletions
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7
lib/encryption/encryption.dart
View File

@ -204,13 +204,12 @@ class Encryption {
throw DecryptException(DecryptException.unknownAlgorithm);
}
final sessionId = content.sessionId;
final senderKey = content.senderKey;
if (sessionId == null) {
throw DecryptException(DecryptException.unknownSession);
}
final inboundGroupSession =
keyManager.getInboundGroupSession(roomId, sessionId, senderKey);
keyManager.getInboundGroupSession(roomId, sessionId);
if (!(inboundGroupSession?.isValid ?? false)) {
canRequestSession = true;
throw DecryptException(DecryptException.unknownSession);
@ -309,14 +308,12 @@ class Encryption {
.getInboundGroupSession(
roomId,
sessionId,
content.senderKey,
)
?.isValid ??
false)) {
await keyManager.loadInboundGroupSession(
roomId,
sessionId,
content.senderKey,
);
}
event = decryptRoomEventSync(roomId, event);
@ -392,6 +389,8 @@ class Encryption {
'algorithm': AlgorithmTypes.megolmV1AesSha2,
'ciphertext':
sess!.outboundGroupSession!.encrypt(json.encode(payloadContent)),
// device_id + sender_key should be removed at some point in future since
// they're deprecated. Just left here for compatibility
'device_id': client.deviceID,
'sender_key': identityKey,
'session_id': sess.outboundGroupSession!.session_id(),

76
lib/encryption/key_manager.dart
View File

@ -108,8 +108,10 @@ class KeyManager {
senderClaimedKeys_['ed25519'] = device.ed25519Key!;
}
}
final oldSession =
getInboundGroupSession(roomId, sessionId, senderKey, otherRooms: false);
final oldSession = getInboundGroupSession(
roomId,
sessionId,
);
if (content['algorithm'] != AlgorithmTypes.megolmV1AesSha2) {
return;
}
@ -215,29 +217,14 @@ class KeyManager {
return storeFuture ?? Future.value();
}
SessionKey? getInboundGroupSession(
String roomId, String sessionId, String senderKey,
{bool otherRooms = true}) {
SessionKey? getInboundGroupSession(String roomId, String sessionId) {
final sess = _inboundGroupSessions[roomId]?[sessionId];
if (sess != null) {
if (sess.senderKey != senderKey && sess.senderKey.isNotEmpty) {
if (sess.sessionId != sessionId && sess.sessionId.isNotEmpty) {
return null;
}
return sess;
}
if (!otherRooms) {
return null;
}
// search if this session id is *somehow* found in another room
for (final val in _inboundGroupSessions.values) {
final sess = val[sessionId];
if (sess != null) {
if (sess.senderKey != senderKey && sess.senderKey.isNotEmpty) {
return null;
}
return sess;
}
}
return null;
}
@ -245,12 +232,12 @@ class KeyManager {
void maybeAutoRequest(
String roomId,
String sessionId,
String senderKey, {
String? senderKey, {
bool tryOnlineBackup = true,
bool onlineKeyBackupOnly = true,
}) {
final room = client.getRoomById(roomId);
final requestIdent = '$roomId|$sessionId|$senderKey';
final requestIdent = '$roomId|$sessionId';
if (room != null &&
!_requestedSessionIds.contains(requestIdent) &&
!client.isUnknownSession) {
@ -268,11 +255,11 @@ class KeyManager {
/// Loads an inbound group session
Future<SessionKey?> loadInboundGroupSession(
String roomId, String sessionId, String senderKey) async {
String roomId, String sessionId) async {
final sess = _inboundGroupSessions[roomId]?[sessionId];
if (sess != null) {
if (sess.senderKey != senderKey && sess.senderKey.isNotEmpty) {
return null; // sender keys do not match....better not do anything
if (sess.sessionId != sessionId && sess.sessionId.isNotEmpty) {
return null; // session_id does not match....better not do anything
}
return sess; // nothing to do
}
@ -285,8 +272,8 @@ class KeyManager {
final roomInboundGroupSessions =
_inboundGroupSessions[roomId] ??= <String, SessionKey>{};
if (!dbSess.isValid ||
dbSess.senderKey.isEmpty ||
dbSess.senderKey != senderKey) {
dbSess.sessionId.isEmpty ||
dbSess.sessionId != sessionId) {
return null;
}
roomInboundGroupSessions[sessionId] = dbSess;
@ -339,8 +326,8 @@ class KeyManager {
}
}
final inboundSess = await loadInboundGroupSession(room.id,
sess.outboundGroupSession!.session_id(), encryption.identityKey!);
final inboundSess = await loadInboundGroupSession(
room.id, sess.outboundGroupSession!.session_id());
if (inboundSess == null) {
wipe = true;
}
@ -697,14 +684,13 @@ class KeyManager {
Future<void> request(
Room room,
String sessionId,
String senderKey, {
String? senderKey, {
bool tryOnlineBackup = true,
bool onlineKeyBackupOnly = false,
}) async {
if (tryOnlineBackup && await isCached()) {
// let's first check our online key backup store thingy...
final hadPreviously =
getInboundGroupSession(room.id, sessionId, senderKey) != null;
final hadPreviously = getInboundGroupSession(room.id, sessionId) != null;
try {
await loadSingleKey(room.id, sessionId);
} catch (err, stacktrace) {
@ -718,7 +704,7 @@ class KeyManager {
}
// TODO: also don't request from others if we have an index of 0 now
if (!hadPreviously &&
getInboundGroupSession(room.id, sessionId, senderKey) != null) {
getInboundGroupSession(room.id, sessionId) != null) {
return; // we managed to load the session from online backup, no need to care about it now
}
}
@ -735,7 +721,6 @@ class KeyManager {
devices: devices,
room: room,
sessionId: sessionId,
senderKey: senderKey,
);
final userList = await room.requestParticipants();
await client.sendToDevicesOfUserIds(
@ -746,8 +731,8 @@ class KeyManager {
'body': {
'algorithm': AlgorithmTypes.megolmV1AesSha2,
'room_id': room.id,
'sender_key': senderKey,
'session_id': sessionId,
if (senderKey != null) 'sender_key': senderKey,
},
'request_id': requestId,
'requesting_device_id': client.deviceID,
@ -866,10 +851,8 @@ class KeyManager {
return; // unknown room
}
final sessionId = event.content['body']['session_id'];
final senderKey = event.content['body']['sender_key'];
// okay, let's see if we have this session at all
final session =
await loadInboundGroupSession(room.id, sessionId, senderKey);
final session = await loadInboundGroupSession(room.id, sessionId);
if (session == null) {
Logs().i('[KeyManager] Unknown session, ignoring');
return; // we don't have this session anyways
@ -879,7 +862,6 @@ class KeyManager {
devices: [device],
room: room,
sessionId: sessionId,
senderKey: senderKey,
);
if (incomingShareRequests.containsKey(request.requestId)) {
Logs().i('[KeyManager] Already processed this request, ignoring');
@ -935,8 +917,7 @@ class KeyManager {
}
final request = outgoingShareRequests.values.firstWhereOrNull((r) =>
r.room.id == event.content['room_id'] &&
r.sessionId == event.content['session_id'] &&
r.senderKey == event.content['sender_key']);
r.sessionId == event.content['session_id']);
if (request == null || request.canceled) {
return; // no associated request found or it got canceled
}
@ -954,8 +935,8 @@ class KeyManager {
.add(encryptedContent['sender_key']);
// TODO: verify that the keys work to decrypt a message
// alright, all checks out, let's go ahead and store this session
await setInboundGroupSession(
request.room.id, request.sessionId, request.senderKey, event.content,
await setInboundGroupSession(request.room.id, request.sessionId,
device.curve25519Key!, event.content,
forwarded: true,
senderClaimedKeys: {
'ed25519': event.content['sender_claimed_ed25519_key'],
@ -1022,7 +1003,6 @@ class KeyManagerKeyShareRequest {
final List<DeviceKeys> devices;
final Room room;
final String sessionId;
final String senderKey;
bool canceled;
KeyManagerKeyShareRequest(
@ -1030,7 +1010,6 @@ class KeyManagerKeyShareRequest {
List<DeviceKeys>? devices,
required this.room,
required this.sessionId,
required this.senderKey,
this.canceled = false})
: devices = devices ?? [];
}
@ -1056,8 +1035,8 @@ class RoomKeyRequest extends ToDeviceEvent {
return; // request is canceled, don't send anything
}
final room = this.room;
final session = await keyManager.loadInboundGroupSession(
room.id, request.sessionId, request.senderKey);
final session =
await keyManager.loadInboundGroupSession(room.id, request.sessionId);
if (session?.inboundGroupSession == null) {
Logs().v("[KeyManager] Not forwarding key we don't have");
return;
@ -1067,8 +1046,9 @@ class RoomKeyRequest extends ToDeviceEvent {
message['forwarding_curve25519_key_chain'] =
List<String>.from(session.forwardingCurve25519KeyChain);
message['sender_key'] =
(session.senderKey.isNotEmpty) ? session.senderKey : request.senderKey;
if (session.senderKey.isNotEmpty) {
message['sender_key'] = session.senderKey;
}
message['sender_claimed_ed25519_key'] =
session.senderClaimedKeys['ed25519'] ??
(session.forwardingCurve25519KeyChain.isEmpty

20
test/encryption/encrypt_decrypt_room_message_test.dart
View File

@ -79,6 +79,26 @@ void main() {
expect(decryptedEvent.originalSource?.toJson(), encryptedEvent.toJson());
});
test('decrypt payload without device_id', () async {
if (!olmEnabled) return;
payload.remove('device_id');
payload.remove('sender_key');
final encryptedEvent = Event(
type: EventTypes.Encrypted,
content: payload,
room: room,
originServerTs: now,
eventId: '\$event',
senderId: client.userID!,
);
final decryptedEvent =
await client.encryption!.decryptRoomEvent(roomId, encryptedEvent);
expect(decryptedEvent.type, 'm.room.message');
expect(decryptedEvent.content['msgtype'], 'm.text');
expect(decryptedEvent.content['text'], 'Hello foxies!');
expect(decryptedEvent.originalSource?.toJson(), encryptedEvent.toJson());
});
test('decrypt payload nocache', () async {
if (!olmEnabled) return;
client.encryption!.keyManager.clearInboundGroupSessions();

81
test/encryption/key_manager_test.dart
View File

@ -69,7 +69,7 @@ void main() {
await client.encryption!.keyManager.handleToDeviceEvent(event);
expect(
client.encryption!.keyManager.getInboundGroupSession(
'!726s6s6q:example.com', validSessionId, validSenderKey) !=
'!726s6s6q:example.com', validSessionId) !=
null,
true);
@ -89,7 +89,7 @@ void main() {
await client.encryption!.keyManager.handleToDeviceEvent(event);
expect(
client.encryption!.keyManager.getInboundGroupSession(
'!726s6s6q:example.com', validSessionId, validSenderKey) !=
'!726s6s6q:example.com', validSessionId) !=
null,
false);
});
@ -111,7 +111,7 @@ void main() {
client.encryption!.keyManager.getOutboundGroupSession(roomId) != null,
true);
var inbound = client.encryption!.keyManager.getInboundGroupSession(
roomId, sess.outboundGroupSession!.session_id(), client.identityKey);
roomId, sess.outboundGroupSession!.session_id());
expect(inbound != null, true);
expect(
inbound!.allowedAtIndex['@alice:example.com']
@ -220,7 +220,7 @@ void main() {
client.encryption!.keyManager.getOutboundGroupSession(roomId) != null,
true);
inbound = client.encryption!.keyManager.getInboundGroupSession(
roomId, sess.outboundGroupSession!.session_id(), client.identityKey);
roomId, sess.outboundGroupSession!.session_id());
expect(
inbound!.allowedAtIndex['@alice:example.com']
?['L+4+JCl8MD63dgo8z5Ta+9QAHXiANyOVSfgbHA5d3H8'],
@ -284,68 +284,41 @@ void main() {
client.encryption!.keyManager.clearInboundGroupSessions();
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
.getInboundGroupSession(roomId, sessionId) !=
null,
false);
await client.encryption!.keyManager
.setInboundGroupSession(roomId, sessionId, senderKey, sessionContent);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
.getInboundGroupSession(roomId, sessionId) !=
null,
true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, 'invalid') !=
null,
false);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
null,
true);
expect(
client.encryption!.keyManager
.getInboundGroupSession('otherroom', sessionId, senderKey) !=
null,
true);
expect(
client.encryption!.keyManager
.getInboundGroupSession('otherroom', sessionId, 'invalid') !=
null,
false);
expect(
client.encryption!.keyManager
.getInboundGroupSession('otherroom', 'invalid', senderKey) !=
null,
false);
client.encryption!.keyManager.clearInboundGroupSessions();
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
null,
false);
await client.encryption!.keyManager
.loadInboundGroupSession(roomId, sessionId, senderKey);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
.getInboundGroupSession(roomId, sessionId) !=
null,
true);
client.encryption!.keyManager.clearInboundGroupSessions();
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
.getInboundGroupSession(roomId, sessionId) !=
null,
false);
await client.encryption!.keyManager
.loadInboundGroupSession(roomId, sessionId, 'invalid');
.loadInboundGroupSession(roomId, sessionId);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, 'invalid') !=
.getInboundGroupSession(roomId, sessionId) !=
null,
true);
client.encryption!.keyManager.clearInboundGroupSessions();
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId) !=
null,
false);
});
@ -398,13 +371,13 @@ void main() {
forwarded: true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.inboundGroupSession
?.first_known_index(),
1);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.forwardingCurve25519KeyChain
.length,
1);
@ -424,13 +397,13 @@ void main() {
forwarded: true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.inboundGroupSession
?.first_known_index(),
1);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.forwardingCurve25519KeyChain
.length,
1);
@ -450,13 +423,13 @@ void main() {
forwarded: true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.inboundGroupSession
?.first_known_index(),
0);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.forwardingCurve25519KeyChain
.length,
1);
@ -476,13 +449,13 @@ void main() {
forwarded: true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.inboundGroupSession
?.first_known_index(),
0);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.forwardingCurve25519KeyChain
.length,
1);
@ -502,13 +475,13 @@ void main() {
forwarded: true);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.inboundGroupSession
?.first_known_index(),
0);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey)
.getInboundGroupSession(roomId, sessionId)
?.forwardingCurve25519KeyChain
.length,
0);

45
test/encryption/key_request_test.dart
View File

@ -72,7 +72,6 @@ void main() {
final content = payload['messages']['@alice:example.com']['*'];
if (content['action'] == 'request' &&
content['body']['room_id'] == '!726s6s6q:example.com' &&
content['body']['sender_key'] == validSenderKey &&
content['body']['session_id'] == 'sessionId') {
foundEvent = true;
break;
@ -94,8 +93,7 @@ void main() {
.userDeviceKeys['@alice:example.com']!.deviceKeys['OTHERDEVICE']!
.setVerified(true);
final session = await matrix.encryption!.keyManager
.loadInboundGroupSession(
'!726s6s6q:example.com', validSessionId, validSenderKey);
.loadInboundGroupSession('!726s6s6q:example.com', validSessionId);
// test a successful share
var event = ToDeviceEvent(
sender: '@alice:example.com',
@ -287,8 +285,7 @@ void main() {
tryOnlineBackup: false);
final session = (await matrix.encryption!.keyManager
.loadInboundGroupSession(
requestRoom.id, validSessionId, validSenderKey))!;
.loadInboundGroupSession(requestRoom.id, validSessionId))!;
final sessionKey = session.inboundGroupSession!
.export_session(session.inboundGroupSession!.first_known_index());
matrix.encryption!.keyManager.clearInboundGroupSessions();
@ -310,11 +307,28 @@ void main() {
});
await matrix.encryption!.keyManager.handleToDeviceEvent(event);
expect(
matrix.encryption!.keyManager.getInboundGroupSession(
requestRoom.id, validSessionId, validSenderKey) !=
matrix.encryption!.keyManager
.getInboundGroupSession(requestRoom.id, validSessionId) !=
null,
true);
// test ToDeviceEvent without sender_key in content
event = ToDeviceEvent(
sender: '@alice:example.com',
type: 'm.forwarded_room_key',
content: {
'algorithm': AlgorithmTypes.megolmV1AesSha2,
'room_id': '!726s6s6q:example.com',
'session_id': validSessionId,
'session_key': sessionKey,
'forwarding_curve25519_key_chain': [],
'sender_claimed_ed25519_key':
'L+4+JCl8MD63dgo8z5Ta+9QAHXiANyOVSfgbHA5d3H8',
},
encryptedContent: {
'sender_key': 'L+4+JCl8MD63dgo8z5Ta+9QAHXiANyOVSfgbHA5d3H8',
});
// now test a few invalid scenarios
// request not found
@ -337,15 +351,14 @@ void main() {
});
await matrix.encryption!.keyManager.handleToDeviceEvent(event);
expect(
matrix.encryption!.keyManager.getInboundGroupSession(
requestRoom.id, validSessionId, validSenderKey) !=
matrix.encryption!.keyManager
.getInboundGroupSession(requestRoom.id, validSessionId) !=
null,
false);
// unknown device
await matrix.encryption!.keyManager.request(
requestRoom, validSessionId, validSenderKey,
tryOnlineBackup: false);
await matrix.encryption!.keyManager
.request(requestRoom, validSessionId, null, tryOnlineBackup: false);
matrix.encryption!.keyManager.clearInboundGroupSessions();
event = ToDeviceEvent(
sender: '@alice:example.com',
@ -365,8 +378,8 @@ void main() {
});
await matrix.encryption!.keyManager.handleToDeviceEvent(event);
expect(
matrix.encryption!.keyManager.getInboundGroupSession(
requestRoom.id, validSessionId, validSenderKey) !=
matrix.encryption!.keyManager
.getInboundGroupSession(requestRoom.id, validSessionId) !=
null,
false);
@ -390,8 +403,8 @@ void main() {
});
await matrix.encryption!.keyManager.handleToDeviceEvent(event);
expect(
matrix.encryption!.keyManager.getInboundGroupSession(
requestRoom.id, validSessionId, validSenderKey) !=
matrix.encryption!.keyManager
.getInboundGroupSession(requestRoom.id, validSessionId) !=
null,
false);

6
test/encryption/online_key_backup_test.dart
View File

@ -67,7 +67,7 @@ void main() {
.request(client.getRoomById(roomId)!, sessionId, senderKey);
expect(
client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey) !=
.getInboundGroupSession(roomId, sessionId) !=
null,
true);
});
@ -108,11 +108,11 @@ void main() {
final onlineKeys = RoomKeys.fromJson(json.decode(payload));
client.encryption!.keyManager.clearInboundGroupSessions();
var ret = client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey);
.getInboundGroupSession(roomId, sessionId);
expect(ret, null);
await client.encryption!.keyManager.loadFromResponse(onlineKeys);
ret = client.encryption!.keyManager
.getInboundGroupSession(roomId, sessionId, senderKey);
.getInboundGroupSession(roomId, sessionId);
expect(ret != null, true);
});