diff options
Diffstat (limited to 'synapse/handlers/_base.py')
| -rw-r--r-- | synapse/handlers/_base.py | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py index d6c064b398..cb992143f5 100644 --- a/synapse/handlers/_base.py +++ b/synapse/handlers/_base.py @@ -18,7 +18,7 @@ from twisted.internet import defer from synapse.api.errors import LimitExceededError, SynapseError from synapse.crypto.event_signing import add_hashes_and_signatures from synapse.api.constants import Membership, EventTypes -from synapse.types import UserID +from synapse.types import UserID, RoomAlias from synapse.util.logcontext import PreserveLoggingContext @@ -107,6 +107,22 @@ class BaseHandler(object): if not suppress_auth: self.auth.check(event, auth_events=context.current_state) + if event.type == EventTypes.CanonicalAlias: + # Check the alias is acually valid (at this time at least) + room_alias_str = event.content.get("alias", None) + if room_alias_str: + room_alias = RoomAlias.from_string(room_alias_str) + directory_handler = self.hs.get_handlers().directory_handler + mapping = yield directory_handler.get_association(room_alias) + + if mapping["room_id"] != event.room_id: + raise SynapseError( + 400, + "Room alias %s does not point to the room" % ( + room_alias_str, + ) + ) + (event_stream_id, max_stream_id) = yield self.store.persist_event( event, context=context ) |