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Don't include current state in processEventWithMissingState

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This commit is contained in:
Neil Alexander 2020-06-12 17:08:43 +01:00
parent 0dc4ceaa2d
commit a5c078dc0a
1 changed files with 1 additions and 9 deletions
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10
federationapi/routing/send.go
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@ -377,8 +377,7 @@ func (t *txnReq) processEventWithMissingState(e gomatrixserverlib.Event, roomVer
// at this point we know we're going to have a gap: we need to work out the room state at the new backwards extremity.
// security: we have to do state resolution on the new backwards extremity (TODO: WHY)
// Therefore, we cannot just query /state_ids with this event to get the state before. Instead, we need to query
// the state AFTER all the prev_events for this event, then mix in our current room state and apply state resolution
// to that to get the state before the event.
// the state AFTER all the prev_events for this event, then apply state resolution to that to get the state before the event.
var states []*gomatrixserverlib.RespState
needed := gomatrixserverlib.StateNeededForAuth([]gomatrixserverlib.Event{*backwardsExtremity}).Tuples()
for _, prevEventID := range backwardsExtremity.PrevEventIDs() {
@ -390,13 +389,6 @@ func (t *txnReq) processEventWithMissingState(e gomatrixserverlib.Event, roomVer
}
states = append(states, prevState)
}
// mix in the current room state
currState, err := t.lookupCurrentState(backwardsExtremity)
if err != nil {
util.GetLogger(t.context).WithError(err).Errorf("Failed to lookup current room state")
return err
}
states = append(states, currState)
resolvedState, err := t.resolveStatesAndCheck(roomVersion, states, backwardsExtremity)
if err != nil {
util.GetLogger(t.context).WithError(err).Errorf("Failed to resolve state conflicts for event %s", backwardsExtremity.EventID())