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Implement rejected events (#1426)

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* WIP Event rejection

* Still send back errors for rejected events

Instead, discard them at the federationapi /send layer rather than
re-implementing checks at the clientapi/PerformJoin layer.

* Implement rejected events

Critically, rejected events CAN cause state resolution to happen
as it can merge forks in the DAG. This is fine, _provided_ we
do not add the rejected event when performing state resolution,
which is what this PR does. It also fixes the error handling
when NotAllowed happens, as we were checking too early and needlessly
handling NotAllowed in more than one place.

* Update test to match reality

* Modify InputRoomEvents to no longer return an error

Errors do not serialise across HTTP boundaries in polylith mode,
so instead set fields on the InputRoomEventsResponse. Add `Err()`
function to make the API shape basically the same.

* Remove redundant returns; linting

* Update blacklist
This commit is contained in:
Kegsay 2020-09-16 13:00:52 +01:00 • committed by GitHub
parent ba6c7c4a5c
commit 18231f25b4
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27 changed files with 114 additions and 74 deletions
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@ -470,4 +470,6 @@ We can't peek into rooms with shared history_visibility
We can't peek into rooms with invited history_visibility
We can't peek into rooms with joined history_visibility
Local users can peek by room alias
Peeked rooms only turn up in the sync for the device who peeked them
Peeked rooms only turn up in the sync for the device who peeked them
Room state at a rejected message event is the same as its predecessor
Room state at a rejected state event is the same as its predecessor