mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-22 22:31:56 -06:00
c8d476a3cc
Room integrity was never compromised as GMSL does auth checks, but we would incorrectly 200 OK the request instead of 403ing.
400 lines
12 KiB
Go
400 lines
12 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package routing
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import (
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"context"
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"errors"
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"net/http"
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"time"
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appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
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"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
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"github.com/matrix-org/dendrite/clientapi/httputil"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/dendrite/clientapi/threepid"
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currentstateAPI "github.com/matrix-org/dendrite/currentstateserver/api"
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"github.com/matrix-org/dendrite/internal/config"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/roomserver/api"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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userapi "github.com/matrix-org/dendrite/userapi/api"
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"github.com/matrix-org/dendrite/userapi/storage/accounts"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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)
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var errMissingUserID = errors.New("'user_id' must be supplied")
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func SendBan(
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req *http.Request, accountDB accounts.Database, device *userapi.Device,
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roomID string, cfg *config.Dendrite,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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) util.JSONResponse {
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body, evTime, roomVer, reqErr := extractRequestData(req, roomID, rsAPI)
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if reqErr != nil {
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return *reqErr
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}
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return sendMembership(req.Context(), accountDB, device, roomID, "ban", body.Reason, cfg, body.UserID, evTime, roomVer, rsAPI, asAPI)
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}
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func sendMembership(ctx context.Context, accountDB accounts.Database, device *userapi.Device,
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roomID, membership, reason string, cfg *config.Dendrite, targetUserID string, evTime time.Time,
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roomVer gomatrixserverlib.RoomVersion,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI) util.JSONResponse {
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event, err := buildMembershipEvent(
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ctx, targetUserID, reason, accountDB, device, membership,
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roomID, false, cfg, evTime, rsAPI, asAPI,
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)
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if err == errMissingUserID {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(err.Error()),
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}
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} else if err == eventutil.ErrRoomNoExists {
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return util.JSONResponse{
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Code: http.StatusNotFound,
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JSON: jsonerror.NotFound(err.Error()),
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}
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} else if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildMembershipEvent failed")
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return jsonerror.InternalServerError()
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}
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_, err = roomserverAPI.SendEvents(
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ctx, rsAPI,
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[]gomatrixserverlib.HeaderedEvent{event.Event.Headered(roomVer)},
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cfg.Matrix.ServerName,
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nil,
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)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("SendEvents failed")
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return jsonerror.InternalServerError()
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}
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}
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func SendKick(
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req *http.Request, accountDB accounts.Database, device *userapi.Device,
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roomID string, cfg *config.Dendrite,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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stateAPI currentstateAPI.CurrentStateInternalAPI,
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) util.JSONResponse {
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body, evTime, roomVer, reqErr := extractRequestData(req, roomID, rsAPI)
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if reqErr != nil {
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return *reqErr
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: 400,
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JSON: jsonerror.BadJSON("missing user_id"),
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}
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}
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errRes := checkMemberInRoom(req.Context(), stateAPI, device.UserID, roomID)
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if errRes != nil {
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return *errRes
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}
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var queryRes roomserverAPI.QueryMembershipForUserResponse
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err := rsAPI.QueryMembershipForUser(req.Context(), &roomserverAPI.QueryMembershipForUserRequest{
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RoomID: roomID,
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UserID: body.UserID,
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}, &queryRes)
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if err != nil {
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return util.ErrorResponse(err)
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}
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// kick is only valid if the user is not currently banned or left (that is, they are joined or invited)
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if queryRes.Membership != "join" && queryRes.Membership != "invite" {
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return util.JSONResponse{
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Code: 403,
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JSON: jsonerror.Unknown("cannot /kick banned or left users"),
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}
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}
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// TODO: should we be using SendLeave instead?
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return sendMembership(req.Context(), accountDB, device, roomID, "leave", body.Reason, cfg, body.UserID, evTime, roomVer, rsAPI, asAPI)
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}
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func SendUnban(
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req *http.Request, accountDB accounts.Database, device *userapi.Device,
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roomID string, cfg *config.Dendrite,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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) util.JSONResponse {
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body, evTime, roomVer, reqErr := extractRequestData(req, roomID, rsAPI)
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if reqErr != nil {
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return *reqErr
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}
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if body.UserID == "" {
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return util.JSONResponse{
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Code: 400,
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JSON: jsonerror.BadJSON("missing user_id"),
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}
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}
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var queryRes roomserverAPI.QueryMembershipForUserResponse
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err := rsAPI.QueryMembershipForUser(req.Context(), &roomserverAPI.QueryMembershipForUserRequest{
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RoomID: roomID,
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UserID: body.UserID,
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}, &queryRes)
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if err != nil {
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return util.ErrorResponse(err)
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}
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// unban is only valid if the user is currently banned
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if queryRes.Membership != "ban" {
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return util.JSONResponse{
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Code: 400,
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JSON: jsonerror.Unknown("can only /unban users that are banned"),
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}
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}
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// TODO: should we be using SendLeave instead?
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return sendMembership(req.Context(), accountDB, device, roomID, "leave", body.Reason, cfg, body.UserID, evTime, roomVer, rsAPI, asAPI)
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}
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func SendInvite(
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req *http.Request, accountDB accounts.Database, device *userapi.Device,
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roomID string, cfg *config.Dendrite,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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) util.JSONResponse {
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body, evTime, roomVer, reqErr := extractRequestData(req, roomID, rsAPI)
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if reqErr != nil {
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return *reqErr
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}
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inviteStored, jsonErrResp := checkAndProcessThreepid(
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req, device, body, cfg, rsAPI, accountDB, roomID, evTime,
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)
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if jsonErrResp != nil {
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return *jsonErrResp
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}
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// If an invite has been stored on an identity server, it means that a
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// m.room.third_party_invite event has been emitted and that we shouldn't
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// emit a m.room.member one.
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if inviteStored {
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}
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}
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event, err := buildMembershipEvent(
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req.Context(), body.UserID, body.Reason, accountDB, device, "invite",
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roomID, false, cfg, evTime, rsAPI, asAPI,
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)
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if err == errMissingUserID {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(err.Error()),
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}
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} else if err == eventutil.ErrRoomNoExists {
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return util.JSONResponse{
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Code: http.StatusNotFound,
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JSON: jsonerror.NotFound(err.Error()),
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}
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} else if err != nil {
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util.GetLogger(req.Context()).WithError(err).Error("buildMembershipEvent failed")
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return jsonerror.InternalServerError()
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}
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perr := roomserverAPI.SendInvite(
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req.Context(), rsAPI,
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event.Event.Headered(roomVer),
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nil, // ask the roomserver to draw up invite room state for us
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cfg.Matrix.ServerName,
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nil,
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)
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if perr != nil {
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util.GetLogger(req.Context()).WithError(perr).Error("producer.SendInvite failed")
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return perr.JSONResponse()
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: struct{}{},
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}
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}
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func buildMembershipEvent(
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ctx context.Context,
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targetUserID, reason string, accountDB accounts.Database,
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device *userapi.Device,
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membership, roomID string, isDirect bool,
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cfg *config.Dendrite, evTime time.Time,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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) (*gomatrixserverlib.HeaderedEvent, error) {
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profile, err := loadProfile(ctx, targetUserID, cfg, accountDB, asAPI)
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if err != nil {
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return nil, err
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}
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builder := gomatrixserverlib.EventBuilder{
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Sender: device.UserID,
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RoomID: roomID,
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Type: "m.room.member",
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StateKey: &targetUserID,
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}
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content := gomatrixserverlib.MemberContent{
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Membership: membership,
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DisplayName: profile.DisplayName,
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AvatarURL: profile.AvatarURL,
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Reason: reason,
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IsDirect: isDirect,
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}
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if err = builder.SetContent(content); err != nil {
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return nil, err
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}
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return eventutil.BuildEvent(ctx, &builder, cfg, evTime, rsAPI, nil)
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}
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// loadProfile lookups the profile of a given user from the database and returns
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// it if the user is local to this server, or returns an empty profile if not.
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// Returns an error if the retrieval failed or if the first parameter isn't a
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// valid Matrix ID.
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func loadProfile(
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ctx context.Context,
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userID string,
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cfg *config.Dendrite,
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accountDB accounts.Database,
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asAPI appserviceAPI.AppServiceQueryAPI,
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) (*authtypes.Profile, error) {
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_, serverName, err := gomatrixserverlib.SplitID('@', userID)
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if err != nil {
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return nil, err
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}
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var profile *authtypes.Profile
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if serverName == cfg.Matrix.ServerName {
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profile, err = appserviceAPI.RetrieveUserProfile(ctx, userID, asAPI, accountDB)
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} else {
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profile = &authtypes.Profile{}
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}
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return profile, err
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}
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func extractRequestData(req *http.Request, roomID string, rsAPI api.RoomserverInternalAPI) (
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body *threepid.MembershipRequest, evTime time.Time, roomVer gomatrixserverlib.RoomVersion, resErr *util.JSONResponse,
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) {
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verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
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verRes := api.QueryRoomVersionForRoomResponse{}
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if err := rsAPI.QueryRoomVersionForRoom(req.Context(), &verReq, &verRes); err != nil {
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resErr = &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.UnsupportedRoomVersion(err.Error()),
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}
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return
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}
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roomVer = verRes.RoomVersion
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if reqErr := httputil.UnmarshalJSONRequest(req, &body); reqErr != nil {
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resErr = reqErr
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return
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}
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evTime, err := httputil.ParseTSParam(req)
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if err != nil {
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resErr = &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.InvalidArgumentValue(err.Error()),
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}
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return
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}
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return
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}
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func checkAndProcessThreepid(
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req *http.Request,
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device *userapi.Device,
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body *threepid.MembershipRequest,
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cfg *config.Dendrite,
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rsAPI roomserverAPI.RoomserverInternalAPI,
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accountDB accounts.Database,
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roomID string,
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evTime time.Time,
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) (inviteStored bool, errRes *util.JSONResponse) {
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inviteStored, err := threepid.CheckAndProcessInvite(
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req.Context(), device, body, cfg, rsAPI, accountDB,
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roomID, evTime,
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)
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if err == threepid.ErrMissingParameter {
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return inviteStored, &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(err.Error()),
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}
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} else if err == threepid.ErrNotTrusted {
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return inviteStored, &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.NotTrusted(body.IDServer),
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}
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} else if err == eventutil.ErrRoomNoExists {
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return inviteStored, &util.JSONResponse{
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Code: http.StatusNotFound,
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JSON: jsonerror.NotFound(err.Error()),
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}
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} else if e, ok := err.(gomatrixserverlib.BadJSONError); ok {
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return inviteStored, &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(e.Error()),
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}
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}
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if err != nil {
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util.GetLogger(req.Context()).WithError(err).Error("threepid.CheckAndProcessInvite failed")
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er := jsonerror.InternalServerError()
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return inviteStored, &er
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}
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return
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}
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func checkMemberInRoom(ctx context.Context, stateAPI currentstateAPI.CurrentStateInternalAPI, userID, roomID string) *util.JSONResponse {
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tuple := gomatrixserverlib.StateKeyTuple{
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EventType: gomatrixserverlib.MRoomMember,
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StateKey: userID,
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}
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var membershipRes currentstateAPI.QueryCurrentStateResponse
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err := stateAPI.QueryCurrentState(ctx, ¤tstateAPI.QueryCurrentStateRequest{
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RoomID: roomID,
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StateTuples: []gomatrixserverlib.StateKeyTuple{tuple},
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}, &membershipRes)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("QueryCurrentState: could not query membership for user")
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e := jsonerror.InternalServerError()
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return &e
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}
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ev, ok := membershipRes.StateEvents[tuple]
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if !ok {
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return &util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: jsonerror.Forbidden("user does not belong to room"),
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}
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}
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membership, err := ev.Membership()
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if err != nil || membership != "join" {
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return &util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: jsonerror.Forbidden("user does not belong to room"),
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}
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}
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return nil
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}
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