Method onCrossSigningMessage

federationapi/consumers/keychange.go:158–205

(m api.DeviceMessage)

}

func (t *KeyChangeConsumer) onCrossSigningMessage(m api.DeviceMessage) bool {
	output := m.CrossSigningKeyUpdate
	_, host, err := gomatrixserverlib.SplitID('@', output.UserID)
	if err != nil {
		logrus.WithError(err).Errorf("fedsender key change consumer: user ID parse failure")
		return true
	}
	if host != gomatrixserverlib.ServerName(t.serverName) {
		// Ignore any messages that didn't originate locally, otherwise we'll
		// end up parroting information we received from other servers.
		return true
	}
	logger := logrus.WithField("user_id", output.UserID)

	var queryRes roomserverAPI.QueryRoomsForUserResponse
	err = t.rsAPI.QueryRoomsForUser(t.ctx, &roomserverAPI.QueryRoomsForUserRequest{
		UserID:         output.UserID,
		WantMembership: "join",
	}, &queryRes)
	if err != nil {
		logger.WithError(err).Error("fedsender key change consumer: failed to calculate joined rooms for user")
		return true
	}
	// send this key change to all servers who share rooms with this user.
	destinations, err := t.db.GetJoinedHostsForRooms(t.ctx, queryRes.RoomIDs, true)
	if err != nil {
		logger.WithError(err).Error("fedsender key change consumer: failed to calculate joined hosts for rooms user is in")
		return true
	}

	if len(destinations) == 0 {
		return true
	}

	// Pack the EDU and marshal it
	edu := &gomatrixserverlib.EDU{
		Type:   types.MSigningKeyUpdate,
		Origin: string(t.serverName),
	}
	if edu.Content, err = json.Marshal(output); err != nil {
		logger.WithError(err).Error("fedsender key change consumer: failed to marshal output, dropping")
		return true
	}

	logger.Debugf("Sending cross-signing update message to %q", destinations)
	err = t.queues.SendEDU(edu, t.serverName, destinations)
	return err == nil
}

func prevID(streamID int64) []int64 {
	if streamID <= 1 {