From 3ee97a2748f64a772878b6e4d4775aed2e0534a2 Mon Sep 17 00:00:00 2001 From: Brendan Abolivier Date: Wed, 14 Oct 2020 12:00:52 +0100 Subject: [PATCH] Make sure a retention policy is a state event (#8527) * Make sure a retention policy is a state event * Changelog --- changelog.d/8527.bugfix | 1 + synapse/events/validator.py | 3 +++ synapse/storage/databases/main/events.py | 4 ++++ 3 files changed, 8 insertions(+) create mode 100644 changelog.d/8527.bugfix diff --git a/changelog.d/8527.bugfix b/changelog.d/8527.bugfix new file mode 100644 index 0000000000..727e0ba299 --- /dev/null +++ b/changelog.d/8527.bugfix @@ -0,0 +1 @@ +Fix a bug introduced in v1.7.0 that could cause Synapse to insert values from non-state `m.room.retention` events into the `room_retention` database table. diff --git a/synapse/events/validator.py b/synapse/events/validator.py index 9df35b54ba..5f9af8529b 100644 --- a/synapse/events/validator.py +++ b/synapse/events/validator.py @@ -83,6 +83,9 @@ class EventValidator: Args: event (FrozenEvent): The event to validate. """ + if not event.is_state(): + raise SynapseError(code=400, msg="must be a state event") + min_lifetime = event.content.get("min_lifetime") max_lifetime = event.content.get("max_lifetime") diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py index fdb17745f6..ba3b1769b0 100644 --- a/synapse/storage/databases/main/events.py +++ b/synapse/storage/databases/main/events.py @@ -1270,6 +1270,10 @@ class PersistEventsStore: ) def _store_retention_policy_for_room_txn(self, txn, event): + if not event.is_state(): + logger.debug("Ignoring non-state m.room.retention event") + return + if hasattr(event, "content") and ( "min_lifetime" in event.content or "max_lifetime" in event.content ):