dendrite/clientapi/routing/membership.go

394 lines
12 KiB
Go

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