358 lines
12 KiB
Go
358 lines
12 KiB
Go
// Copyright 2017-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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// Please see LICENSE files in the repository root for full details.
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package routing
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import (
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"context"
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"fmt"
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"net/http"
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"sort"
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"time"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/gomatrixserverlib/fclient"
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"github.com/matrix-org/gomatrixserverlib/spec"
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"github.com/matrix-org/util"
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"github.com/sirupsen/logrus"
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"github.com/element-hq/dendrite/internal/eventutil"
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"github.com/element-hq/dendrite/roomserver/api"
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"github.com/element-hq/dendrite/roomserver/types"
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"github.com/element-hq/dendrite/setup/config"
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)
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// MakeJoin implements the /make_join API
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func MakeJoin(
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httpReq *http.Request,
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request *fclient.FederationRequest,
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cfg *config.FederationAPI,
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rsAPI api.FederationRoomserverAPI,
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roomID spec.RoomID, userID spec.UserID,
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remoteVersions []gomatrixserverlib.RoomVersion,
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) util.JSONResponse {
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roomVersion, err := rsAPI.QueryRoomVersionForRoom(httpReq.Context(), roomID.String())
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if err != nil {
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util.GetLogger(httpReq.Context()).WithError(err).Error("failed obtaining room version")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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req := api.QueryServerJoinedToRoomRequest{
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ServerName: request.Destination(),
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RoomID: roomID.String(),
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}
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res := api.QueryServerJoinedToRoomResponse{}
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if err = rsAPI.QueryServerJoinedToRoom(httpReq.Context(), &req, &res); err != nil {
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util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryServerJoinedToRoom failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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createJoinTemplate := func(proto *gomatrixserverlib.ProtoEvent) (gomatrixserverlib.PDU, []gomatrixserverlib.PDU, error) {
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identity, signErr := cfg.Matrix.SigningIdentityFor(request.Destination())
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if signErr != nil {
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util.GetLogger(httpReq.Context()).WithError(signErr).Errorf("obtaining signing identity for %s failed", request.Destination())
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return nil, nil, spec.NotFound(fmt.Sprintf("Server name %q does not exist", request.Destination()))
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}
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queryRes := api.QueryLatestEventsAndStateResponse{
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RoomVersion: roomVersion,
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}
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event, signErr := eventutil.QueryAndBuildEvent(httpReq.Context(), proto, identity, time.Now(), rsAPI, &queryRes)
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switch e := signErr.(type) {
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case nil:
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case eventutil.ErrRoomNoExists:
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util.GetLogger(httpReq.Context()).WithError(signErr).Error("eventutil.BuildEvent failed")
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return nil, nil, spec.NotFound("Room does not exist")
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case gomatrixserverlib.BadJSONError:
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util.GetLogger(httpReq.Context()).WithError(signErr).Error("eventutil.BuildEvent failed")
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return nil, nil, spec.BadJSON(e.Error())
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default:
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util.GetLogger(httpReq.Context()).WithError(signErr).Error("eventutil.BuildEvent failed")
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return nil, nil, spec.InternalServerError{}
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}
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stateEvents := make([]gomatrixserverlib.PDU, len(queryRes.StateEvents))
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for i, stateEvent := range queryRes.StateEvents {
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stateEvents[i] = stateEvent.PDU
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}
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return event, stateEvents, nil
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}
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roomQuerier := api.JoinRoomQuerier{
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Roomserver: rsAPI,
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}
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senderIDPtr, err := rsAPI.QuerySenderIDForUser(httpReq.Context(), roomID, userID)
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if err != nil {
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util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QuerySenderIDForUser failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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var senderID spec.SenderID
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if senderIDPtr == nil {
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senderID = spec.SenderID(userID.String())
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} else {
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senderID = *senderIDPtr
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}
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input := gomatrixserverlib.HandleMakeJoinInput{
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Context: httpReq.Context(),
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UserID: userID,
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SenderID: senderID,
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RoomID: roomID,
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RoomVersion: roomVersion,
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RemoteVersions: remoteVersions,
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RequestOrigin: request.Origin(),
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LocalServerName: cfg.Matrix.ServerName,
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LocalServerInRoom: res.RoomExists && res.IsInRoom,
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RoomQuerier: &roomQuerier,
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UserIDQuerier: func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
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return rsAPI.QueryUserIDForSender(httpReq.Context(), roomID, senderID)
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},
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BuildEventTemplate: createJoinTemplate,
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}
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response, internalErr := gomatrixserverlib.HandleMakeJoin(input)
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switch e := internalErr.(type) {
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case nil:
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case spec.InternalServerError:
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util.GetLogger(httpReq.Context()).WithError(internalErr).Error("failed to handle make_join request")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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case spec.MatrixError:
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util.GetLogger(httpReq.Context()).WithError(internalErr).Error("failed to handle make_join request")
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code := http.StatusInternalServerError
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switch e.ErrCode {
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case spec.ErrorForbidden:
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code = http.StatusForbidden
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case spec.ErrorNotFound:
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code = http.StatusNotFound
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case spec.ErrorUnableToAuthoriseJoin:
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fallthrough // http.StatusBadRequest
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case spec.ErrorBadJSON:
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code = http.StatusBadRequest
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}
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return util.JSONResponse{
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Code: code,
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JSON: e,
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}
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case spec.IncompatibleRoomVersionError:
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util.GetLogger(httpReq.Context()).WithError(internalErr).Error("failed to handle make_join request")
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: e,
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}
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default:
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util.GetLogger(httpReq.Context()).WithError(internalErr).Error("failed to handle make_join request")
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.Unknown("unknown error"),
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}
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}
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if response == nil {
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util.GetLogger(httpReq.Context()).Error("gmsl.HandleMakeJoin returned invalid response")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: map[string]interface{}{
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"event": response.JoinTemplateEvent,
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"room_version": response.RoomVersion,
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},
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}
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}
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// SendJoin implements the /send_join API
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func SendJoin(
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httpReq *http.Request,
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request *fclient.FederationRequest,
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cfg *config.FederationAPI,
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rsAPI api.FederationRoomserverAPI,
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keys gomatrixserverlib.JSONVerifier,
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roomID spec.RoomID,
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eventID string,
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) util.JSONResponse {
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roomVersion, err := rsAPI.QueryRoomVersionForRoom(httpReq.Context(), roomID.String())
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if err != nil {
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util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryRoomVersionForRoom failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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input := gomatrixserverlib.HandleSendJoinInput{
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Context: httpReq.Context(),
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RoomID: roomID,
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EventID: eventID,
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JoinEvent: request.Content(),
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RoomVersion: roomVersion,
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RequestOrigin: request.Origin(),
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LocalServerName: cfg.Matrix.ServerName,
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KeyID: cfg.Matrix.KeyID,
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PrivateKey: cfg.Matrix.PrivateKey,
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Verifier: keys,
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MembershipQuerier: &api.MembershipQuerier{Roomserver: rsAPI},
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UserIDQuerier: func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
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return rsAPI.QueryUserIDForSender(httpReq.Context(), roomID, senderID)
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},
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StoreSenderIDFromPublicID: func(ctx context.Context, senderID spec.SenderID, userIDRaw string, roomID spec.RoomID) error {
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userID, userErr := spec.NewUserID(userIDRaw, true)
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if userErr != nil {
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return userErr
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}
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return rsAPI.StoreUserRoomPublicKey(ctx, senderID, *userID, roomID)
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},
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}
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response, joinErr := gomatrixserverlib.HandleSendJoin(input)
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switch e := joinErr.(type) {
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case nil:
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case spec.InternalServerError:
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util.GetLogger(httpReq.Context()).WithError(joinErr)
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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case spec.MatrixError:
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util.GetLogger(httpReq.Context()).WithError(joinErr)
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code := http.StatusInternalServerError
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switch e.ErrCode {
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case spec.ErrorForbidden:
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code = http.StatusForbidden
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case spec.ErrorNotFound:
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code = http.StatusNotFound
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case spec.ErrorUnsupportedRoomVersion:
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code = http.StatusInternalServerError
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case spec.ErrorBadJSON:
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code = http.StatusBadRequest
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}
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return util.JSONResponse{
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Code: code,
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JSON: e,
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}
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default:
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util.GetLogger(httpReq.Context()).WithError(joinErr)
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.Unknown("unknown error"),
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}
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}
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if response == nil {
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util.GetLogger(httpReq.Context()).Error("gmsl.HandleMakeJoin returned invalid response")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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// Fetch the state and auth chain. We do this before we send the events
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// on, in case this fails.
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var stateAndAuthChainResponse api.QueryStateAndAuthChainResponse
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err = rsAPI.QueryStateAndAuthChain(httpReq.Context(), &api.QueryStateAndAuthChainRequest{
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PrevEventIDs: response.JoinEvent.PrevEventIDs(),
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AuthEventIDs: response.JoinEvent.AuthEventIDs(),
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RoomID: roomID.String(),
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ResolveState: true,
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}, &stateAndAuthChainResponse)
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if err != nil {
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util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryStateAndAuthChain failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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if !stateAndAuthChainResponse.RoomExists {
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return util.JSONResponse{
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Code: http.StatusNotFound,
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JSON: spec.NotFound("Room does not exist"),
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}
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}
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if !stateAndAuthChainResponse.StateKnown {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: spec.Forbidden("State not known"),
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}
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}
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// Send the events to the room server.
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// We are responsible for notifying other servers that the user has joined
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// the room, so set SendAsServer to cfg.Matrix.ServerName
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if !response.AlreadyJoined {
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var rsResponse api.InputRoomEventsResponse
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rsAPI.InputRoomEvents(httpReq.Context(), &api.InputRoomEventsRequest{
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InputRoomEvents: []api.InputRoomEvent{
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{
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Kind: api.KindNew,
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Event: &types.HeaderedEvent{PDU: response.JoinEvent},
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SendAsServer: string(cfg.Matrix.ServerName),
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TransactionID: nil,
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},
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},
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}, &rsResponse)
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if rsResponse.ErrMsg != "" {
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util.GetLogger(httpReq.Context()).WithField(logrus.ErrorKey, rsResponse.ErrMsg).Error("SendEvents failed")
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if rsResponse.NotAllowed {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: spec.Forbidden(rsResponse.ErrMsg),
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}
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}
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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}
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// sort events deterministically by depth (lower is earlier)
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// We also do this because sytest's basic federation server isn't good at using the correct
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// state if these lists are randomised, resulting in flakey tests. :(
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sort.Sort(eventsByDepth(stateAndAuthChainResponse.StateEvents))
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sort.Sort(eventsByDepth(stateAndAuthChainResponse.AuthChainEvents))
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// https://matrix.org/docs/spec/server_server/latest#put-matrix-federation-v1-send-join-roomid-eventid
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: fclient.RespSendJoin{
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StateEvents: types.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.StateEvents),
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AuthEvents: types.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.AuthChainEvents),
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Origin: cfg.Matrix.ServerName,
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Event: response.JoinEvent.JSON(),
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},
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}
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}
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type eventsByDepth []*types.HeaderedEvent
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func (e eventsByDepth) Len() int {
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return len(e)
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}
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func (e eventsByDepth) Swap(i, j int) {
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e[i], e[j] = e[j], e[i]
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}
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func (e eventsByDepth) Less(i, j int) bool {
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return e[i].Depth() < e[j].Depth()
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}
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