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-rw-r--r--synapse/handlers/directory.py77
-rw-r--r--synapse/handlers/room.py5
-rw-r--r--synapse/rest/client/v1/directory.py37
3 files changed, 55 insertions, 64 deletions
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
-            )
-        yield self._create_association(room_alias, room_id, servers, creator=user_id)
+        Returns:
+            Deferred
+        """
 
-    @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
+        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
+                )
 
-        # association creation for app services
-        yield self._create_association(room_alias, room_id, servers)
+        yield self._create_association(room_alias, room_id, servers, creator=user_id)
+        if send_event:
+            yield self.send_room_alias_update_event(
+                requester,
+                room_id
+            )
 
     @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(