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bugfix: retire invites even when we cannot talk to the remote server to make/send_leave (#1918)

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* bugfix: retire invites even when we cannot talk to the remote server to make/send_leave

Also modify the leave response in /sync to include a fake event as this is ultimately
what clients (and sytest) will use to determine leave-ness.

* hash the event ID

* Base64 not hex
This commit is contained in:
kegsay 2021-07-14 10:39:17 +01:00 committed by GitHub
parent 7df3e691f2
commit e80098e186
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 23 additions and 1 deletions
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5
roomserver/internal/perform/perform_leave.go
View file

@ -26,6 +26,7 @@ import (
"github.com/matrix-org/dendrite/roomserver/storage"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
type Leaver struct {
@ -171,7 +172,9 @@ func (r *Leaver) performFederatedRejectInvite(
}
leaveRes := fsAPI.PerformLeaveResponse{}
if err := r.FSAPI.PerformLeave(ctx, &leaveReq, &leaveRes); err != nil {
return nil, err
// failures in PerformLeave should NEVER stop us from telling other components like the
// sync API that the invite was withdrawn. Otherwise we can end up with stuck invites.
util.GetLogger(ctx).WithError(err).Errorf("failed to PerformLeave, still retiring invite event")
}
// Withdraw the invite, so that the sync API etc are

16
syncapi/streams/stream_invite.go
View file

@ -2,8 +2,13 @@ package streams
import (
"context"
"crypto/sha256"
"encoding/base64"
"strconv"
"time"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/matrix-org/gomatrixserverlib"
)
type InviteStreamProvider struct {
@ -56,6 +61,17 @@ func (p *InviteStreamProvider) IncrementalSync(
for roomID := range retiredInvites {
if _, ok := req.Response.Rooms.Join[roomID]; !ok {
lr := types.NewLeaveResponse()
h := sha256.Sum256(append([]byte(roomID), []byte(strconv.FormatInt(int64(to), 10))...))
lr.Timeline.Events = append(lr.Timeline.Events, gomatrixserverlib.ClientEvent{
// fake event ID which muxes in the to position
EventID: "$" + base64.RawURLEncoding.EncodeToString(h[:]),
OriginServerTS: gomatrixserverlib.AsTimestamp(time.Now()),
RoomID: roomID,
Sender: req.Device.UserID,
StateKey: &req.Device.UserID,
Type: "m.room.member",
Content: gomatrixserverlib.RawJSON(`{"membership":"leave"}`),
})
req.Response.Rooms.Leave[roomID] = *lr
}
}

3
sytest-whitelist
View file

@ -527,3 +527,6 @@ POST /_synapse/admin/v1/register with shared secret disallows symbols
Membership event with an invalid displayname in the send_join response should not cause room join to fail
Inbound federation rejects incorrectly-signed invite rejections
Inbound federation can receive invite rejections
Inbound federation can receive invite and reject when remote replies with a 403
Inbound federation can receive invite and reject when remote replies with a 500
Inbound federation can receive invite and reject when remote is unreachable