mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-23 14:51:56 -06:00
485 lines
15 KiB
Go
485 lines
15 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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"github.com/matrix-org/dendrite/internal/eventutil"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/setup/config"
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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.ClientAPI,
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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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errRes := checkMemberInRoom(req.Context(), rsAPI, device.UserID, roomID)
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if errRes != nil {
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return *errRes
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}
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plEvent := roomserverAPI.GetStateEvent(req.Context(), rsAPI, roomID, gomatrixserverlib.StateKeyTuple{
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EventType: gomatrixserverlib.MRoomPowerLevels,
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StateKey: "",
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})
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if plEvent == nil {
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return util.JSONResponse{
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Code: 403,
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JSON: jsonerror.Forbidden("You don't have permission to ban this user, no power_levels event in this room."),
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}
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}
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pl, err := plEvent.PowerLevels()
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if err != nil {
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return util.JSONResponse{
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Code: 403,
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JSON: jsonerror.Forbidden("You don't have permission to ban this user, the power_levels event for this room is malformed so auth checks cannot be performed."),
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}
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}
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allowedToBan := pl.UserLevel(device.UserID) >= pl.Ban
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if !allowedToBan {
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return util.JSONResponse{
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Code: 403,
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JSON: jsonerror.Forbidden("You don't have permission to ban this user, power level too low."),
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}
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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.ClientAPI, 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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if err = roomserverAPI.SendEvents(
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ctx, rsAPI,
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roomserverAPI.KindNew,
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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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false,
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); 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.ClientAPI,
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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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errRes := checkMemberInRoom(req.Context(), rsAPI, 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.ClientAPI,
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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.ClientAPI,
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rsAPI roomserverAPI.RoomserverInternalAPI, asAPI appserviceAPI.AppServiceQueryAPI,
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) util.JSONResponse {
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body, evTime, _, 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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err = roomserverAPI.SendInvite(
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req.Context(), rsAPI,
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event,
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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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switch e := err.(type) {
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case *roomserverAPI.PerformError:
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return e.JSONResponse()
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case nil:
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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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default:
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util.GetLogger(req.Context()).WithError(err).Error("roomserverAPI.SendInvite failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: jsonerror.InternalServerError(),
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}
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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.ClientAPI, 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.QueryAndBuildEvent(ctx, &builder, cfg.Matrix, 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.ClientAPI,
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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 roomserverAPI.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 := roomserverAPI.QueryRoomVersionForRoomRequest{RoomID: roomID}
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verRes := roomserverAPI.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.ClientAPI,
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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, rsAPI roomserverAPI.RoomserverInternalAPI, 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 roomserverAPI.QueryCurrentStateResponse
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err := rsAPI.QueryCurrentState(ctx, &roomserverAPI.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 := membershipRes.StateEvents[tuple]
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if ev == nil {
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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 {
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util.GetLogger(ctx).WithError(err).Error("Member event isn't valid")
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e := jsonerror.InternalServerError()
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return &e
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}
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if membership != gomatrixserverlib.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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func SendForget(
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req *http.Request, device *userapi.Device,
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roomID string, rsAPI roomserverAPI.RoomserverInternalAPI,
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) util.JSONResponse {
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ctx := req.Context()
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logger := util.GetLogger(ctx).WithField("roomID", roomID).WithField("userID", device.UserID)
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var membershipRes roomserverAPI.QueryMembershipForUserResponse
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membershipReq := roomserverAPI.QueryMembershipForUserRequest{
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RoomID: roomID,
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UserID: device.UserID,
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}
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err := rsAPI.QueryMembershipForUser(ctx, &membershipReq, &membershipRes)
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if err != nil {
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logger.WithError(err).Error("QueryMembershipForUser: could not query membership for user")
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return jsonerror.InternalServerError()
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}
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if membershipRes.IsInRoom {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.Forbidden("user is still a member of the room"),
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}
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}
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if !membershipRes.HasBeenInRoom {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.Forbidden("user did not belong to room"),
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}
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}
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request := roomserverAPI.PerformForgetRequest{
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RoomID: roomID,
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UserID: device.UserID,
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}
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response := roomserverAPI.PerformForgetResponse{}
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if err := rsAPI.PerformForget(ctx, &request, &response); err != nil {
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logger.WithError(err).Error("PerformForget: unable to forget room")
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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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