diff options
| -rw-r--r-- | CHANGES.md | 18 | ||||
| -rw-r--r-- | synapse/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/api/constants.py | 3 | ||||
| -rw-r--r-- | synapse/handlers/device.py | 8 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 74 | ||||
| -rw-r--r-- | synapse/handlers/room.py | 2 | ||||
| -rw-r--r-- | synapse/handlers/stats.py | 2 | ||||
| -rw-r--r-- | synapse/storage/data_stores/main/stats.py | 4 |
8 files changed, 90 insertions, 23 deletions
diff --git a/CHANGES.md b/CHANGES.md index ab6fce3e7d..c2aa735908 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -1,7 +1,23 @@ +Synapse 1.10.0rc2 (2020-02-06) +============================== + +Bugfixes +-------- + +- Fix an issue with cross-signing where device signatures were not sent to remote servers. ([\#6844](https://github.com/matrix-org/synapse/issues/6844)) +- Fix to the unknown remote device detection which was introduced in 1.10.rc1. ([\#6848](https://github.com/matrix-org/synapse/issues/6848)) + + +Internal Changes +---------------- + +- Detect unexpected sender keys on remote encrypted events and resync device lists. ([\#6850](https://github.com/matrix-org/synapse/issues/6850)) + + Synapse 1.10.0rc1 (2020-01-31) ============================== -**WARNING**: As of this release Synapse validates `client_secret` parameters in the Client-Server API as per the spec. See [\#6766](https://github.com/matrix-org/synapse/issues/6766) for details. +**WARNING to client developers**: As of this release Synapse validates `client_secret` parameters in the Client-Server API as per the spec. See [\#6766](https://github.com/matrix-org/synapse/issues/6766) for details. Features diff --git a/synapse/__init__.py b/synapse/__init__.py index bd942d3e1c..4f1859bd57 100644 --- a/synapse/__init__.py +++ b/synapse/__init__.py @@ -36,7 +36,7 @@ try: except ImportError: pass -__version__ = "1.10.0rc1" +__version__ = "1.10.0rc2" if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)): # We import here so that we don't have to install a bunch of deps when diff --git a/synapse/api/constants.py b/synapse/api/constants.py index 0ade47e624..cc8577552b 100644 --- a/synapse/api/constants.py +++ b/synapse/api/constants.py @@ -77,12 +77,11 @@ class EventTypes(object): Aliases = "m.room.aliases" Redaction = "m.room.redaction" ThirdPartyInvite = "m.room.third_party_invite" - Encryption = "m.room.encryption" RelatedGroups = "m.room.related_groups" RoomHistoryVisibility = "m.room.history_visibility" CanonicalAlias = "m.room.canonical_alias" - Encryption = "m.room.encryption" + Encrypted = "m.room.encrypted" RoomAvatar = "m.room.avatar" RoomEncryption = "m.room.encryption" GuestAccess = "m.room.guest_access" diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py index 26ef5e150c..a9bd431486 100644 --- a/synapse/handlers/device.py +++ b/synapse/handlers/device.py @@ -598,7 +598,13 @@ class DeviceListUpdater(object): # happens if we've missed updates. resync = yield self._need_to_do_resync(user_id, pending_updates) - logger.debug("Need to re-sync devices for %r? %r", user_id, resync) + if logger.isEnabledFor(logging.INFO): + logger.info( + "Received device list update for %s, requiring resync: %s. Devices: %s", + user_id, + resync, + ", ".join(u[0] for u in pending_updates), + ) if resync: yield self.user_device_resync(user_id) diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 5728ea2ee7..8c6a142991 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -752,29 +752,75 @@ class FederationHandler(BaseHandler): # For encrypted messages we check that we know about the sending device, # if we don't then we mark the device cache for that user as stale. - if event.type == EventTypes.Encryption: + if event.type == EventTypes.Encrypted: device_id = event.content.get("device_id") + sender_key = event.content.get("sender_key") + + cached_devices = await self.store.get_cached_devices_for_user(event.sender) + + resync = False # Whether we should resync device lists. + + device = None if device_id is not None: - cached_devices = await self.store.get_cached_devices_for_user( - event.sender - ) - if device_id not in cached_devices: + device = cached_devices.get(device_id) + if device is None: logger.info( "Received event from remote device not in our cache: %s %s", event.sender, device_id, ) - await self.store.mark_remote_user_device_cache_as_stale( - event.sender + resync = True + + # We also check if the `sender_key` matches what we expect. + if sender_key is not None: + # Figure out what sender key we're expecting. If we know the + # device and recognize the algorithm then we can work out the + # exact key to expect. Otherwise check it matches any key we + # have for that device. + if device: + keys = device.get("keys", {}).get("keys", {}) + + if event.content.get("algorithm") == "m.megolm.v1.aes-sha2": + # For this algorithm we expect a curve25519 key. + key_name = "curve25519:%s" % (device_id,) + current_keys = [keys.get(key_name)] + else: + # We don't know understand the algorithm, so we just + # check it matches a key for the device. + current_keys = keys.values() + elif device_id: + # We don't have any keys for the device ID. + current_keys = [] + else: + # The event didn't include a device ID, so we just look for + # keys across all devices. + current_keys = ( + key + for device in cached_devices + for key in device.get("keys", {}).get("keys", {}).values() ) - # Immediately attempt a resync in the background - if self.config.worker_app: - return run_in_background(self._user_device_resync, event.sender) - else: - return run_in_background( - self._device_list_updater.user_device_resync, event.sender - ) + # We now check that the sender key matches (one of) the expected + # keys. + if sender_key not in current_keys: + logger.info( + "Received event from remote device with unexpected sender key: %s %s: %s", + event.sender, + device_id or "<no device_id>", + sender_key, + ) + resync = True + + if resync: + await self.store.mark_remote_user_device_cache_as_stale(event.sender) + + # Immediately attempt a resync in the background + if self.config.worker_app: + return run_in_background(self._user_device_resync, event.sender) + else: + return run_in_background( + self._device_list_updater.user_device_resync, event.sender + ) @log_function async def backfill(self, dest, room_id, limit, extremities): diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 1382399557..b609a65f47 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -360,7 +360,7 @@ class RoomCreationHandler(BaseHandler): (EventTypes.RoomHistoryVisibility, ""), (EventTypes.GuestAccess, ""), (EventTypes.RoomAvatar, ""), - (EventTypes.Encryption, ""), + (EventTypes.RoomEncryption, ""), (EventTypes.ServerACL, ""), (EventTypes.RelatedGroups, ""), (EventTypes.PowerLevels, ""), diff --git a/synapse/handlers/stats.py b/synapse/handlers/stats.py index 7f7d56390e..68e6edace5 100644 --- a/synapse/handlers/stats.py +++ b/synapse/handlers/stats.py @@ -286,7 +286,7 @@ class StatsHandler(StateDeltasHandler): room_state["history_visibility"] = event_content.get( "history_visibility" ) - elif typ == EventTypes.Encryption: + elif typ == EventTypes.RoomEncryption: room_state["encryption"] = event_content.get("algorithm") elif typ == EventTypes.Name: room_state["name"] = event_content.get("name") diff --git a/synapse/storage/data_stores/main/stats.py b/synapse/storage/data_stores/main/stats.py index 7bc186e9a1..7af1495e47 100644 --- a/synapse/storage/data_stores/main/stats.py +++ b/synapse/storage/data_stores/main/stats.py @@ -744,7 +744,7 @@ class StatsStore(StateDeltasStore): EventTypes.Create, EventTypes.JoinRules, EventTypes.RoomHistoryVisibility, - EventTypes.Encryption, + EventTypes.RoomEncryption, EventTypes.Name, EventTypes.Topic, EventTypes.RoomAvatar, @@ -816,7 +816,7 @@ class StatsStore(StateDeltasStore): room_state["history_visibility"] = event.content.get( "history_visibility" ) - elif event.type == EventTypes.Encryption: + elif event.type == EventTypes.RoomEncryption: room_state["encryption"] = event.content.get("algorithm") elif event.type == EventTypes.Name: room_state["name"] = event.content.get("name") |