synapse/changelog.d/12905.bugfix at f7baffd8ece67c96fac6cd17d50c4aba92f323c5 - tileradotorg/synapse - tilera Git

tileradotorg/synapse

forked from MirrorHub/synapse

Richard van der Hoff 79dadf7216

Fix 404 on /sync when the last event is a redaction of an unknown/purged event (#12905 )

Currently, we try to pull the event corresponding to a sync token from the database. However, when
we fetch redaction events, we check the target of that redaction (because we aren't allowed to send
redactions to clients without validating them). So, if the sync token points to a redaction of an event
that we don't have, we have a problem.

It turns out we don't really need that event, and can just work with its ID and metadata, which
sidesteps the whole problem.

2022-06-01 11:29:51 +00:00

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Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was a redaction of an event that has since been purged.