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Fix /room/.../event/... to return the *original* event after any edits (#12476)

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This is what the MSC (now) requires. Fixes https://github.com/matrix-org/synapse/issues/10310.
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Richard van der Hoff 2022-04-19 16:42:19 +01:00 committed by GitHub
parent 798deb3a10
commit b80bb7e452
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4 changed files with 79 additions and 39 deletions
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1
changelog.d/12476.bugfix Normal file
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@ -0,0 +1 @@
Fix a long-standing bug which incorrectly caused `GET /_matrix/client/r3/rooms/{roomId}/event/{eventId}` to return edited events rather than the original.

19
synapse/events/utils.py
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@ -402,6 +402,7 @@ class EventClientSerializer:
*,
config: SerializeEventConfig = _DEFAULT_SERIALIZE_EVENT_CONFIG,
bundle_aggregations: Optional[Dict[str, "BundledAggregations"]] = None,
apply_edits: bool = True,
) -> JsonDict:
"""Serializes a single event.
@ -409,10 +410,10 @@ class EventClientSerializer:
event: The event being serialized.
time_now: The current time in milliseconds
config: Event serialization config
bundle_aggregations: Whether to include the bundled aggregations for this
event. Only applies to non-state events. (State events never include
bundled aggregations.)
bundle_aggregations: A map from event_id to the aggregations to be bundled
into the event.
apply_edits: Whether the content of the event should be modified to reflect
any replacement in `bundle_aggregations[<event_id>].replace`.
Returns:
The serialized event
"""
@ -430,8 +431,9 @@ class EventClientSerializer:
event,
time_now,
config,
bundle_aggregations[event.event_id],
event_aggregations,
serialized_event,
apply_edits=apply_edits,
)
return serialized_event
@ -470,6 +472,7 @@ class EventClientSerializer:
config: SerializeEventConfig,
aggregations: "BundledAggregations",
serialized_event: JsonDict,
apply_edits: bool,
) -> None:
"""Potentially injects bundled aggregations into the unsigned portion of the serialized event.
@ -479,7 +482,8 @@ class EventClientSerializer:
aggregations: The bundled aggregation to serialize.
serialized_event: The serialized event which may be modified.
config: Event serialization config
apply_edits: Whether the content of the event should be modified to reflect
any replacement in `aggregations.replace`.
"""
serialized_aggregations = {}
@ -490,8 +494,9 @@ class EventClientSerializer:
serialized_aggregations[RelationTypes.REFERENCE] = aggregations.references
if aggregations.replace:
# If there is an edit, apply it to the event.
# If there is an edit, optionally apply it to the event.
edit = aggregations.replace
if apply_edits:
self._apply_edit(event, serialized_event, edit)
# Include information about it in the relations dict.

4
synapse/rest/client/room.py
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@ -669,8 +669,10 @@ class RoomEventServlet(RestServlet):
)
time_now = self.clock.time_msec()
# per MSC2676, /rooms/{roomId}/event/{eventId}, should return the
# *original* event, rather than the edited version
event_dict = self._event_serializer.serialize_event(
event, time_now, bundle_aggregations=aggregations
event, time_now, bundle_aggregations=aggregations, apply_edits=False
)
return 200, event_dict

64
tests/rest/client/test_relations.py
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@ -380,13 +380,16 @@ class RelationsTestCase(BaseRelationsTestCase):
{"event_id": edit_event_id, "sender": self.user_id}, m_replace_dict
)
# /event should return the *original* event
channel = self.make_request(
"GET",
f"/rooms/{self.room}/event/{self.parent_id}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
self.assertEqual(channel.json_body["content"], new_body)
self.assertEqual(
channel.json_body["content"], {"body": "Hi!", "msgtype": "m.text"}
)
assert_bundle(channel.json_body)
# Request the room messages.
@ -399,6 +402,7 @@ class RelationsTestCase(BaseRelationsTestCase):
assert_bundle(self._find_event_in_chunk(channel.json_body["chunk"]))
# Request the room context.
# /context should return the edited event.
channel = self.make_request(
"GET",
f"/rooms/{self.room}/context/{self.parent_id}",
@ -406,6 +410,7 @@ class RelationsTestCase(BaseRelationsTestCase):
)
self.assertEqual(200, channel.code, channel.json_body)
assert_bundle(channel.json_body["event"])
self.assertEqual(channel.json_body["event"]["content"], new_body)
# Request sync, but limit the timeline so it becomes limited (and includes
# bundled aggregations).
@ -470,14 +475,14 @@ class RelationsTestCase(BaseRelationsTestCase):
channel = self.make_request(
"GET",
f"/rooms/{self.room}/event/{self.parent_id}",
f"/rooms/{self.room}/context/{self.parent_id}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
self.assertEqual(channel.json_body["content"], new_body)
self.assertEqual(channel.json_body["event"]["content"], new_body)
relations_dict = channel.json_body["unsigned"].get("m.relations")
relations_dict = channel.json_body["event"]["unsigned"].get("m.relations")
self.assertIn(RelationTypes.REPLACE, relations_dict)
m_replace_dict = relations_dict[RelationTypes.REPLACE]
@ -492,10 +497,9 @@ class RelationsTestCase(BaseRelationsTestCase):
"""Test that editing a reply works."""
# Create a reply to edit.
original_body = {"msgtype": "m.text", "body": "A reply!"}
channel = self._send_relation(
RelationTypes.REFERENCE,
"m.room.message",
content={"msgtype": "m.text", "body": "A reply!"},
RelationTypes.REFERENCE, "m.room.message", content=original_body
)
reply = channel.json_body["event_id"]
@ -508,16 +512,31 @@ class RelationsTestCase(BaseRelationsTestCase):
)
edit_event_id = channel.json_body["event_id"]
# /event returns the original event
channel = self.make_request(
"GET",
f"/rooms/{self.room}/event/{reply}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
event_result = channel.json_body
self.assertDictContainsSubset(original_body, event_result["content"])
# We expect to see the new body in the dict, as well as the reference
# metadata sill intact.
self.assertDictContainsSubset(new_body, channel.json_body["content"])
# also check /context, which returns the *edited* event
channel = self.make_request(
"GET",
f"/rooms/{self.room}/context/{reply}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
context_result = channel.json_body["event"]
# check that the relations are correct for both APIs
for result_event_dict, desc in (
(event_result, "/event"),
(context_result, "/context"),
):
# The reference metadata should still be intact.
self.assertDictContainsSubset(
{
"m.relates_to": {
@ -525,17 +544,18 @@ class RelationsTestCase(BaseRelationsTestCase):
"rel_type": "m.reference",
}
},
channel.json_body["content"],
result_event_dict["content"],
desc,
)
# We expect that the edit relation appears in the unsigned relations
# section.
relations_dict = channel.json_body["unsigned"].get("m.relations")
self.assertIn(RelationTypes.REPLACE, relations_dict)
relations_dict = result_event_dict["unsigned"].get("m.relations")
self.assertIn(RelationTypes.REPLACE, relations_dict, desc)
m_replace_dict = relations_dict[RelationTypes.REPLACE]
for key in ["event_id", "sender", "origin_server_ts"]:
self.assertIn(key, m_replace_dict)
self.assertIn(key, m_replace_dict, desc)
self.assert_dict(
{"event_id": edit_event_id, "sender": self.user_id}, m_replace_dict
@ -605,19 +625,31 @@ class RelationsTestCase(BaseRelationsTestCase):
)
# Request the original event.
# /event should return the original event.
channel = self.make_request(
"GET",
f"/rooms/{self.room}/event/{self.parent_id}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
# The edit to the edit should be ignored.
self.assertEqual(channel.json_body["content"], new_body)
self.assertEqual(
channel.json_body["content"], {"body": "Hi!", "msgtype": "m.text"}
)
# The relations information should not include the edit to the edit.
relations_dict = channel.json_body["unsigned"].get("m.relations")
self.assertIn(RelationTypes.REPLACE, relations_dict)
# /context should return the event updated for the *first* edit
# (The edit to the edit should be ignored.)
channel = self.make_request(
"GET",
f"/rooms/{self.room}/context/{self.parent_id}",
access_token=self.user_token,
)
self.assertEqual(200, channel.code, channel.json_body)
self.assertEqual(channel.json_body["event"]["content"], new_body)
m_replace_dict = relations_dict[RelationTypes.REPLACE]
for key in ["event_id", "sender", "origin_server_ts"]:
self.assertIn(key, m_replace_dict)