// 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"
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
roomserverVersion "github.com/matrix-org/dendrite/roomserver/version"
"github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib/spec"
"github.com/matrix-org/dendrite/clientapi/httputil"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
log "github.com/sirupsen/logrus"
)
// https://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-createroom
type createRoomRequest struct {
Invite []string `json:"invite"`
Name string `json:"name"`
Visibility string `json:"visibility"`
Topic string `json:"topic"`
Preset string `json:"preset"`
CreationContent json.RawMessage `json:"creation_content"`
InitialState []gomatrixserverlib.FledglingEvent `json:"initial_state"`
RoomAliasName string `json:"room_alias_name"`
RoomVersion gomatrixserverlib.RoomVersion `json:"room_version"`
PowerLevelContentOverride json.RawMessage `json:"power_level_content_override"`
IsDirect bool `json:"is_direct"`
}
func (r createRoomRequest) Validate() *util.JSONResponse {
whitespace := "\t\n\x0b\x0c\r " // https://docs.python.org/2/library/string.html#string.whitespace
// https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/handlers/room.py#L81
// Synapse doesn't check for ':' but we will else it will break parsers badly which split things into 2 segments.
if strings.ContainsAny(r.RoomAliasName, whitespace+":") {
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("room_alias_name cannot contain whitespace or ':'"),
}
}
for _, userID := range r.Invite {
if _, err := spec.NewUserID(userID, true); err != nil {
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("user id must be in the form @localpart:domain"),
}
}
}
switch r.Preset {
case spec.PresetPrivateChat, spec.PresetTrustedPrivateChat, spec.PresetPublicChat, "":
default:
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("preset must be any of 'private_chat', 'trusted_private_chat', 'public_chat'"),
}
}
// Validate creation_content fields defined in the spec by marshalling the
// creation_content map into bytes and then unmarshalling the bytes into
// eventutil.CreateContent.
creationContentBytes, err := json.Marshal(r.CreationContent)
if err != nil {
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("malformed creation_content"),
}
}
var CreationContent gomatrixserverlib.CreateContent
err = json.Unmarshal(creationContentBytes, &CreationContent)
if err != nil {
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("malformed creation_content"),
}
}
return nil
}
// https://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-createroom
type createRoomResponse struct {
RoomID string `json:"room_id"`
RoomAlias string `json:"room_alias,omitempty"` // in synapse not spec
}
// CreateRoom implements /createRoom
func CreateRoom(
req *http.Request, device *api.Device,
cfg *config.ClientAPI,
profileAPI api.ClientUserAPI, rsAPI roomserverAPI.ClientRoomserverAPI,
asAPI appserviceAPI.AppServiceInternalAPI,
) util.JSONResponse {
var createRequest createRoomRequest
resErr := httputil.UnmarshalJSONRequest(req, &createRequest)
if resErr != nil {
return *resErr
}
if resErr = createRequest.Validate(); resErr != nil {
return *resErr
}
evTime, err := httputil.ParseTSParam(req)
if err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.InvalidParam(err.Error()),
}
}
return createRoom(req.Context(), createRequest, device, cfg, profileAPI, rsAPI, asAPI, evTime)
}
// createRoom implements /createRoom
func createRoom(
ctx context.Context,
createRequest createRoomRequest, device *api.Device,
cfg *config.ClientAPI,
profileAPI api.ClientUserAPI, rsAPI roomserverAPI.ClientRoomserverAPI,
asAPI appserviceAPI.AppServiceInternalAPI,
evTime time.Time,
) util.JSONResponse {
userID, err := spec.NewUserID(device.UserID, true)
if err != nil {
util.GetLogger(ctx).WithError(err).Error("invalid userID")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
if !cfg.Matrix.IsLocalServerName(userID.Domain()) {
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: spec.Forbidden(fmt.Sprintf("User domain %q not configured locally", userID.Domain())),
}
}
logger := util.GetLogger(ctx)
// TODO: Check room ID doesn't clash with an existing one, and we
// probably shouldn't be using pseudo-random strings, maybe GUIDs?
roomID, err := spec.NewRoomID(fmt.Sprintf("!%s:%s", util.RandomString(16), userID.Domain()))
if err != nil {
util.GetLogger(ctx).WithError(err).Error("invalid roomID")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
// Clobber keys: creator, room_version
roomVersion := roomserverVersion.DefaultRoomVersion()
if createRequest.RoomVersion != "" {
candidateVersion := gomatrixserverlib.RoomVersion(createRequest.RoomVersion)
_, roomVersionError := roomserverVersion.SupportedRoomVersion(candidateVersion)
if roomVersionError != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.UnsupportedRoomVersion(roomVersionError.Error()),
}
}
roomVersion = candidateVersion
}
logger.WithFields(log.Fields{
"userID": userID.String(),
"roomID": roomID.String(),
"roomVersion": roomVersion,
}).Info("Creating new room")
profile, err := appserviceAPI.RetrieveUserProfile(ctx, userID.String(), asAPI, profileAPI)
if err != nil {
util.GetLogger(ctx).WithError(err).Error("appserviceAPI.RetrieveUserProfile failed")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
userDisplayName := profile.DisplayName
userAvatarURL := profile.AvatarURL
keyID := cfg.Matrix.KeyID
privateKey := cfg.Matrix.PrivateKey
req := roomserverAPI.PerformCreateRoomRequest{
InvitedUsers: createRequest.Invite,
RoomName: createRequest.Name,
Visibility: createRequest.Visibility,
Topic: createRequest.Topic,
StatePreset: createRequest.Preset,
CreationContent: createRequest.CreationContent,
InitialState: createRequest.InitialState,
RoomAliasName: createRequest.RoomAliasName,
RoomVersion: roomVersion,
PowerLevelContentOverride: createRequest.PowerLevelContentOverride,
IsDirect: createRequest.IsDirect,
UserDisplayName: userDisplayName,
UserAvatarURL: userAvatarURL,
KeyID: keyID,
PrivateKey: privateKey,
EventTime: evTime,
}
roomAlias, createRes := rsAPI.PerformCreateRoom(ctx, *userID, *roomID, &req)
if createRes != nil {
return *createRes
}
response := createRoomResponse{
RoomID: roomID.String(),
RoomAlias: roomAlias,
}
return util.JSONResponse{
Code: 200,
JSON: response,
}
}