diff --git a/changelog.d/4063.misc b/changelog.d/4063.misc new file mode 100644 index 0000000000..677fcb90ad --- /dev/null +++ b/changelog.d/4063.misc @@ -0,0 +1 @@ +Refactor room alias creation code diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py index 18741c5fac..02f12f6645 100644 --- a/synapse/handlers/directory.py +++ b/synapse/handlers/directory.py @@ -80,42 +80,60 @@ class DirectoryHandler(BaseHandler): ) @defer.inlineCallbacks - def create_association(self, user_id, room_alias, room_id, servers=None): - # association creation for human users - # TODO(erikj): Do user auth. + def create_association(self, requester, room_alias, room_id, servers=None, + send_event=True): + """Attempt to create a new alias - if not self.spam_checker.user_may_create_room_alias(user_id, room_alias): - raise SynapseError( - 403, "This user is not permitted to create this alias", - ) + Args: + requester (Requester) + room_alias (RoomAlias) + room_id (str) + servers (list[str]|None): List of servers that others servers + should try and join via + send_event (bool): Whether to send an updated m.room.aliases event - can_create = yield self.can_modify_alias( - room_alias, - user_id=user_id - ) - if not can_create: - raise SynapseError( - 400, "This alias is reserved by an application service.", - errcode=Codes.EXCLUSIVE + Returns: + Deferred + """ + + user_id = requester.user.to_string() + + service = requester.app_service + if service: + if not service.is_interested_in_alias(room_alias.to_string()): + raise SynapseError( + 400, "This application service has not reserved" + " this kind of alias.", errcode=Codes.EXCLUSIVE + ) + else: + if not self.spam_checker.user_may_create_room_alias(user_id, room_alias): + raise AuthError( + 403, "This user is not permitted to create this alias", + ) + + can_create = yield self.can_modify_alias( + room_alias, + user_id=user_id ) + if not can_create: + raise AuthError( + 400, "This alias is reserved by an application service.", + errcode=Codes.EXCLUSIVE + ) + yield self._create_association(room_alias, room_id, servers, creator=user_id) - - @defer.inlineCallbacks - def create_appservice_association(self, service, room_alias, room_id, - servers=None): - if not service.is_interested_in_alias(room_alias.to_string()): - raise SynapseError( - 400, "This application service has not reserved" - " this kind of alias.", errcode=Codes.EXCLUSIVE + if send_event: + yield self.send_room_alias_update_event( + requester, + room_id ) - # association creation for app services - yield self._create_association(room_alias, room_id, servers) - @defer.inlineCallbacks - def delete_association(self, requester, user_id, room_alias): + def delete_association(self, requester, room_alias): # association deletion for human users + user_id = requester.user.to_string() + try: can_delete = yield self._user_can_delete_alias(room_alias, user_id) except StoreError as e: @@ -143,7 +161,6 @@ class DirectoryHandler(BaseHandler): try: yield self.send_room_alias_update_event( requester, - requester.user.to_string(), room_id ) @@ -261,7 +278,7 @@ class DirectoryHandler(BaseHandler): ) @defer.inlineCallbacks - def send_room_alias_update_event(self, requester, user_id, room_id): + def send_room_alias_update_event(self, requester, room_id): aliases = yield self.store.get_aliases_for_room(room_id) yield self.event_creation_handler.create_and_send_nonmember_event( @@ -270,7 +287,7 @@ class DirectoryHandler(BaseHandler): "type": EventTypes.Aliases, "state_key": self.hs.hostname, "room_id": room_id, - "sender": user_id, + "sender": requester.user.to_string(), "content": {"aliases": aliases}, }, ratelimit=False diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index c3f820b975..ab1571b27b 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -190,10 +190,11 @@ class RoomCreationHandler(BaseHandler): if room_alias: directory_handler = self.hs.get_handlers().directory_handler yield directory_handler.create_association( - user_id=user_id, + requester=requester, room_id=room_id, room_alias=room_alias, servers=[self.hs.hostname], + send_event=False, ) preset_config = config.get( @@ -289,7 +290,7 @@ class RoomCreationHandler(BaseHandler): if room_alias: result["room_alias"] = room_alias.to_string() yield directory_handler.send_room_alias_update_event( - requester, user_id, room_id + requester, room_id ) defer.returnValue(result) diff --git a/synapse/rest/client/v1/directory.py b/synapse/rest/client/v1/directory.py index 97733f3026..0220acf644 100644 --- a/synapse/rest/client/v1/directory.py +++ b/synapse/rest/client/v1/directory.py @@ -74,38 +74,11 @@ class ClientDirectoryServer(ClientV1RestServlet): if room is None: raise SynapseError(400, "Room does not exist") - dir_handler = self.handlers.directory_handler + requester = yield self.auth.get_user_by_req(request) - try: - # try to auth as a user - requester = yield self.auth.get_user_by_req(request) - try: - user_id = requester.user.to_string() - yield dir_handler.create_association( - user_id, room_alias, room_id, servers - ) - yield dir_handler.send_room_alias_update_event( - requester, - user_id, - room_id - ) - except SynapseError as e: - raise e - except Exception: - logger.exception("Failed to create association") - raise - except AuthError: - # try to auth as an application service - service = yield self.auth.get_appservice_by_req(request) - yield dir_handler.create_appservice_association( - service, room_alias, room_id, servers - ) - logger.info( - "Application service at %s created alias %s pointing to %s", - service.url, - room_alias.to_string(), - room_id - ) + yield self.handlers.directory_handler.create_association( + requester, room_alias, room_id, servers + ) defer.returnValue((200, {})) @@ -135,7 +108,7 @@ class ClientDirectoryServer(ClientV1RestServlet): room_alias = RoomAlias.from_string(room_alias) yield dir_handler.delete_association( - requester, user.to_string(), room_alias + requester, room_alias ) logger.info(