diff options
| -rw-r--r-- | changelog.d/6145.bugfix | 1 | ||||
| -rw-r--r-- | synapse/storage/events_worker.py | 14 | ||||
| -rw-r--r-- | tests/storage/test_redaction.py | 36 |
3 files changed, 51 insertions, 0 deletions
diff --git a/changelog.d/6145.bugfix b/changelog.d/6145.bugfix new file mode 100644 index 0000000000..9e0eb5dd4c --- /dev/null +++ b/changelog.d/6145.bugfix @@ -0,0 +1 @@ +Fix fetching censored redactions from DB, which caused APIs like initial sync to fail if it tried to include the censored redaction. diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py index c6fa7f82fd..57ce0304e9 100644 --- a/synapse/storage/events_worker.py +++ b/synapse/storage/events_worker.py @@ -238,6 +238,20 @@ class EventsWorkerStore(SQLBaseStore): # we have to recheck auth now. if not allow_rejected and entry.event.type == EventTypes.Redaction: + if not hasattr(entry.event, "redacts"): + # A redacted redaction doesn't have a `redacts` key, in + # which case lets just withhold the event. + # + # Note: Most of the time if the redactions has been + # redacted we still have the un-redacted event in the DB + # and so we'll still see the `redacts` key. However, this + # isn't always true e.g. if we have censored the event. + logger.debug( + "Withholding redaction event %s as we don't have redacts key", + event_id, + ) + continue + redacted_event_id = entry.event.redacts event_map = yield self._get_events_from_cache_or_db([redacted_event_id]) original_event_entry = event_map.get(redacted_event_id) diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py index deecfad9fb..427d3c49c5 100644 --- a/tests/storage/test_redaction.py +++ b/tests/storage/test_redaction.py @@ -118,6 +118,8 @@ class RedactionTestCase(unittest.HomeserverTestCase): self.get_success(self.store.persist_event(event, context)) + return event + def test_redact(self): self.get_success( self.inject_room_member(self.room1, self.u_alice, Membership.JOIN) @@ -361,3 +363,37 @@ class RedactionTestCase(unittest.HomeserverTestCase): ) self.assert_dict({"content": {}}, json.loads(event_json)) + + def test_redact_redaction(self): + """Tests that we can redact a redaction and can fetch it again. + """ + + self.get_success( + self.inject_room_member(self.room1, self.u_alice, Membership.JOIN) + ) + + msg_event = self.get_success(self.inject_message(self.room1, self.u_alice, "t")) + + first_redact_event = self.get_success( + self.inject_redaction( + self.room1, msg_event.event_id, self.u_alice, "Redacting message" + ) + ) + + self.get_success( + self.inject_redaction( + self.room1, + first_redact_event.event_id, + self.u_alice, + "Redacting redaction", + ) + ) + + # Now lets jump to the future where we have censored the redaction event + # in the DB. + self.reactor.advance(60 * 60 * 24 * 31) + + # We just want to check that fetching the event doesn't raise an exception. + self.get_success( + self.store.get_event(first_redact_event.event_id, allow_none=True) + ) |