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Limit the size of the aggregation_key (#12101)

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There's no reason to let people use long keys.
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Erik Johnston 2022-03-03 10:52:35 +00:00 committed by GitHub
parent 31b125ccec
commit 61fd2a8f59
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1
changelog.d/12101.misc Normal file
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@ -0,0 +1 @@
Limit the size of `aggregation_key` on annotations.

3
synapse/handlers/message.py
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@ -1069,6 +1069,9 @@ class EventCreationHandler:
if relation_type == RelationTypes.ANNOTATION:
aggregation_key = relation["key"]
if len(aggregation_key) > 500:
raise SynapseError(400, "Aggregation key is too long")
already_exists = await self.store.has_user_annotated_event(
relates_to, event.type, aggregation_key, event.sender
)