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Only return state events that the AS passed in via `state_events_at_start` (MSC2716) (#10552) 

* Only return state events that the AS passed in via state_events_at_start

As discovered by @Half-Shot in
https://github.com/matrix-org/matrix-doc/pull/2716#discussion_r684158448

Part of MSC2716

* Add changelog

* Fix changelog extension
pull/10579/head
Eric Eastwood 2021-08-10 18:10:40 -05:00 committed by GitHub
parent fe1d0c8618
commit 8c654b7309
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2 changed files with 4 additions and 1 deletions
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1
changelog.d/10552.misc Normal file
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@ -0,0 +1 @@
Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in.

4
synapse/rest/client/v1/room.py
View File

@ -437,6 +437,7 @@ class RoomBatchSendEventRestServlet(TransactionRestServlet):
prev_state_ids = list(prev_state_map.values())
auth_event_ids = prev_state_ids
state_events_at_start = []
for state_event in body["state_events_at_start"]:
assert_params_in_dict(
state_event, ["type", "origin_server_ts", "content", "sender"]
@ -502,6 +503,7 @@ class RoomBatchSendEventRestServlet(TransactionRestServlet):
)
event_id = event.event_id
state_events_at_start.append(event_id)
auth_event_ids.append(event_id)
events_to_create = body["events"]
@ -651,7 +653,7 @@ class RoomBatchSendEventRestServlet(TransactionRestServlet):
event_ids.append(base_insertion_event.event_id)
return 200, {
"state_events": auth_event_ids,
"state_events": state_events_at_start,
"events": event_ids,
"next_chunk_id": insertion_event["content"][
EventContentFields.MSC2716_NEXT_CHUNK_ID