Fix using the remote provided event from `/send_join`
MODIFY
federationapi/internal/perform.go
federationapi/internal/perform.go
@@ -213,10 +213,14 @@ func (r *FederationInternalAPI) performJoinUsingServer(
// If the remote server returned an event in the "event" key of
// the send_join request then we should use that instead. It may
// contain signatures that we don't know about.
- if respSendJoin.Event != nil && isWellFormedMembershipEvent(
- respSendJoin.Event, roomID, userID, r.cfg.Matrix.ServerName,
+ if len(respSendJoin.Event) > 0 {
+ var remoteEvent *gomatrixserverlib.Event
+ remoteEvent, err = respSendJoin.Event.UntrustedEvent(respMakeJoin.RoomVersion)
+ if err == nil && isWellFormedMembershipEvent(
+ remoteEvent, roomID, userID, r.cfg.Matrix.ServerName,
) {
- event = respSendJoin.Event
+ event = remoteEvent
+ }
}
// Sanity-check the join response to ensure that it has a create

MODIFY
federationapi/routing/join.go
federationapi/routing/join.go
@@ -403,7 +403,7 @@ func SendJoin(
StateEvents: gomatrixserverlib.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.StateEvents),
AuthEvents: gomatrixserverlib.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.AuthChainEvents),
Origin: cfg.Matrix.ServerName,
- Event: &signed,
+ Event: signed.JSON(),
},
}
}

MODIFY
go.mod
go.mod
@@ -30,7 +30,7 @@ require (
github.com/matrix-org/dugong v0.0.0-20210921133753-66e6b1c67e2e
github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16
- github.com/matrix-org/gomatrixserverlib v0.0.0-20220524100759-f98e737f8f9c
+ github.com/matrix-org/gomatrixserverlib v0.0.0-20220525125811-a75fa15a03a0
github.com/matrix-org/pinecone v0.0.0-20220408153826-2999ea29ed48
github.com/matrix-org/util v0.0.0-20200807132607-55161520e1d4
github.com/mattn/go-sqlite3 v1.14.10

MODIFY
go.sum
go.sum
@@ -795,8 +795,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91/go.mod h1
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16 h1:ZtO5uywdd5dLDCud4r0r55eP4j9FuUNpl60Gmntcop4=
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20220524100759-f98e737f8f9c h1:J9krMtVgo4mV/G+mRA1u3GL6nNxdNnuPcs891uIQGic=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20220524100759-f98e737f8f9c/go.mod h1:V5eO8rn/C3rcxig37A/BCeKerLFS+9Avg/77FIeTZ48=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20220525125811-a75fa15a03a0 h1:wmxJJA5dczakTi7UsU/MWuWJY3gmC6RWzTN2S484tHo=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20220525125811-a75fa15a03a0/go.mod h1:V5eO8rn/C3rcxig37A/BCeKerLFS+9Avg/77FIeTZ48=
github.com/matrix-org/pinecone v0.0.0-20220408153826-2999ea29ed48 h1:W0sjjC6yjskHX4mb0nk3p0fXAlbU5bAFUFeEtlrPASE=
github.com/matrix-org/pinecone v0.0.0-20220408153826-2999ea29ed48/go.mod h1:ulJzsVOTssIVp1j/m5eI//4VpAGDkMt5NrRuAVX7wpc=
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7/go.mod h1:vVQlW/emklohkZnOPwD3LrZUBqdfsbiyO3p1lNV8F6U=

Fix using the remote provided event from `/send_join` (#2490)