diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index be57c6d9be..f70f5032fb 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -449,7 +449,7 @@ def copy_power_levels_contents(
# we should only have one level of nesting
if not isinstance(v1, int):
raise TypeError(
- "Invalid power_levels value for %s.%s: %r" % (k, k1, v)
+ "Invalid power_levels value for %s.%s: %r" % (k, k1, v1)
)
h[k1] = v1
continue
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 532ee22fa4..a95b45d791 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -287,7 +287,16 @@ class RoomCreationHandler(BaseHandler):
except AuthError as e:
logger.warning("Unable to update PLs in old room: %s", e)
- logger.info("Setting correct PLs in new room to %s", old_room_pl_state.content)
+ new_pl_content = copy_power_levels_contents(old_room_pl_state.content)
+
+ # pre-msc2260 rooms may not have the right setting for aliases. If no other
+ # value is set, set it now.
+ events_default = new_pl_content.get("events_default", 0)
+ new_pl_content.setdefault("events", {}).setdefault(
+ EventTypes.Aliases, events_default
+ )
+
+ logger.info("Setting correct PLs in new room to %s", new_pl_content)
yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
@@ -295,7 +304,7 @@ class RoomCreationHandler(BaseHandler):
"state_key": "",
"room_id": new_room_id,
"sender": requester.user.to_string(),
- "content": old_room_pl_state.content,
+ "content": new_pl_content,
},
ratelimit=False,
)
@@ -812,6 +821,10 @@ class RoomCreationHandler(BaseHandler):
EventTypes.RoomHistoryVisibility: 100,
EventTypes.CanonicalAlias: 50,
EventTypes.RoomAvatar: 50,
+ # MSC2260: Allow everybody to send alias events by default
+ # This will be reudundant on pre-MSC2260 rooms, since the
+ # aliases event is special-cased.
+ EventTypes.Aliases: 0,
},
"events_default": 0,
"state_default": 50,
|