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authorEric Eastwood <erice@element.io>2021-07-21 05:29:57 -0500
committerGitHub <noreply@github.com>2021-07-21 10:29:57 +0000
commit2d89c66b8811aa4968aefea3572f174fa00cc3c2 (patch)
treeb3e16e23a6c7e2c11f788717ecaa6e4a78493b51 /UPGRADE.rst
parentMerge tag 'v1.39.0rc1' into develop (diff)
downloadsynapse-2d89c66b8811aa4968aefea3572f174fa00cc3c2.tar.xz
Switch to `chunk` events so we can auth via power_levels (MSC2716) (#10432)
Previously, we were using `content.chunk_id` to connect one
chunk to another. But these events can be from any `sender`
and we can't tell who should be able to send historical events.
We know we only want the application service to do it but these
events have the sender of a real historical message, not the
application service user ID as the sender. Other federated homeservers
also have no indicator which senders are an application service on
the originating homeserver.

So we want to auth all of the MSC2716 events via power_levels
and have them be sent by the application service with proper
PL levels in the room.
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