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Correct field name for stripped state events when knocking. knock_state_events -> knock_room_state (#14102)

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Andrew Morgan 2022-10-12 14:37:20 +01:00 committed by GitHub
parent c152e58116
commit 9c23442ac9
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4 changed files with 26 additions and 6 deletions
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1
changelog.d/14102.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug introduced in Synapse v1.37.0 in which an incorrect key name was used for sending and receiving room metadata when knocking on a room.

2
synapse/federation/federation_client.py
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@ -1294,7 +1294,7 @@ class FederationClient(FederationBase):
return resp[1] return resp[1]
async def send_knock(self, destinations: List[str], pdu: EventBase) -> JsonDict: async def send_knock(self, destinations: List[str], pdu: EventBase) -> JsonDict:
"""Attempts to send a knock event to given a list of servers. Iterates """Attempts to send a knock event to a given list of servers. Iterates
through the list until one attempt succeeds. through the list until one attempt succeeds.
Doing so will cause the remote server to add the event to the graph, Doing so will cause the remote server to add the event to the graph,

9
synapse/federation/federation_server.py
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@ -824,7 +824,14 @@ class FederationServer(FederationBase):
context, self._room_prejoin_state_types context, self._room_prejoin_state_types
) )
) )
return {"knock_state_events": stripped_room_state} return {
"knock_room_state": stripped_room_state,
# Since v1.37, Synapse incorrectly used "knock_state_events" for this field.
# Thus, we also populate a 'knock_state_events' with the same content to
# support old instances.
# See https://github.com/matrix-org/synapse/issues/14088.
"knock_state_events": stripped_room_state,
}
async def _on_send_membership_event( async def _on_send_membership_event(
self, origin: str, content: JsonDict, membership_type: str, room_id: str self, origin: str, content: JsonDict, membership_type: str, room_id: str

20
synapse/handlers/federation.py
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@ -781,15 +781,27 @@ class FederationHandler:
# Send the signed event back to the room, and potentially receive some # Send the signed event back to the room, and potentially receive some
# further information about the room in the form of partial state events # further information about the room in the form of partial state events
stripped_room_state = await self.federation_client.send_knock( knock_response = await self.federation_client.send_knock(target_hosts, event)
target_hosts, event
)
# Store any stripped room state events in the "unsigned" key of the event. # Store any stripped room state events in the "unsigned" key of the event.
# This is a bit of a hack and is cribbing off of invites. Basically we # This is a bit of a hack and is cribbing off of invites. Basically we
# store the room state here and retrieve it again when this event appears # store the room state here and retrieve it again when this event appears
# in the invitee's sync stream. It is stripped out for all other local users. # in the invitee's sync stream. It is stripped out for all other local users.
event.unsigned["knock_room_state"] = stripped_room_state["knock_state_events"] stripped_room_state = (
knock_response.get("knock_room_state")
# Since v1.37, Synapse incorrectly used "knock_state_events" for this field.
# Thus, we also check for a 'knock_state_events' to support old instances.
# See https://github.com/matrix-org/synapse/issues/14088.
or knock_response.get("knock_state_events")
)
if stripped_room_state is None:
raise KeyError(
"Missing 'knock_room_state' (or legacy 'knock_state_events') field in "
"send_knock response"
)
event.unsigned["knock_room_state"] = stripped_room_state
context = EventContext.for_outlier(self._storage_controllers) context = EventContext.for_outlier(self._storage_controllers)
stream_id = await self._federation_event_handler.persist_events_and_notify( stream_id = await self._federation_event_handler.persist_events_and_notify(