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Don't fall back to /state on incoming /send (#1446)

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Neil Alexander 2020-09-28 10:03:18 +01:00 committed by GitHub
parent 15fe61ed58
commit 40dd16a6e6
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 21 deletions
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23
federationapi/routing/send.go
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@ -557,18 +557,12 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
// lookuptStateBeforeEvent returns the room state before the event e, which is just /state_ids and/or /state depending on what
// the server supports.
func (t *txnReq) lookupStateBeforeEvent(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (
respState *gomatrixserverlib.RespState, err error) {
*gomatrixserverlib.RespState, error) {
util.GetLogger(ctx).Infof("lookupStateBeforeEvent %s", eventID)
// Attempt to fetch the missing state using /state_ids and /events
respState, err = t.lookupMissingStateViaStateIDs(ctx, roomID, eventID, roomVersion)
if err != nil {
// Fallback to /state
util.GetLogger(ctx).WithError(err).Warn("lookupStateBeforeEvent failed to /state_ids, falling back to /state")
respState, err = t.lookupMissingStateViaState(ctx, roomID, eventID, roomVersion)
}
return
return t.lookupMissingStateViaStateIDs(ctx, roomID, eventID, roomVersion)
}
func (t *txnReq) resolveStatesAndCheck(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, states []*gomatrixserverlib.RespState, backwardsExtremity *gomatrixserverlib.Event) (*gomatrixserverlib.RespState, error) {
@ -711,19 +705,6 @@ Event:
return nil, nil
}
func (t *txnReq) lookupMissingStateViaState(ctx context.Context, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion) (
respState *gomatrixserverlib.RespState, err error) {
state, err := t.federation.LookupState(ctx, t.Origin, roomID, eventID, roomVersion)
if err != nil {
return nil, err
}
// Check that the returned state is valid.
if err := state.Check(ctx, t.keys, nil); err != nil {
return nil, err
}
return &state, nil
}
func (t *txnReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion) (
*gomatrixserverlib.RespState, error) {
util.GetLogger(ctx).Infof("lookupMissingStateViaStateIDs %s", eventID)