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Clamp the "to" token for /rooms/{roomId}/messages to when the user left

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the room.

There isn't a way for the client to learn a valid "to" token for a room
that they have left in the C-S API but that doesn't stop a client making
one up.
This commit is contained in:
Mark Haines 2015-09-21 14:13:10 +01:00
parent 8e3bbc9bd0
commit 1e101ed4a4
1 changed files with 4 additions and 0 deletions
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synapse/handlers/message.py
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@ -120,6 +120,10 @@ class MessageHandler(BaseHandler):
if source_config.direction == "f":
if source_config.to_key is None:
source_config.to_key = str(leave_token)
else:
to_token = RoomStreamToken.parse(source_config.to_key)
if leave_token.topological < to_token.topological:
source_config.to_key = str(leave_token)
yield self.hs.get_handlers().federation_handler.maybe_backfill(
room_id, room_token.topological