mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-12-04 20:21:56 -06:00
617 lines
20 KiB
Go
617 lines
20 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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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"time"
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appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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roomserverVersion "github.com/matrix-org/dendrite/roomserver/version"
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"github.com/matrix-org/dendrite/userapi/api"
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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/internal/eventutil"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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log "github.com/sirupsen/logrus"
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)
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// https://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-createroom
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type createRoomRequest struct {
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Invite []string `json:"invite"`
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Name string `json:"name"`
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Visibility string `json:"visibility"`
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Topic string `json:"topic"`
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Preset string `json:"preset"`
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CreationContent json.RawMessage `json:"creation_content"`
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InitialState []fledglingEvent `json:"initial_state"`
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RoomAliasName string `json:"room_alias_name"`
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GuestCanJoin bool `json:"guest_can_join"`
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RoomVersion gomatrixserverlib.RoomVersion `json:"room_version"`
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PowerLevelContentOverride json.RawMessage `json:"power_level_content_override"`
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IsDirect bool `json:"is_direct"`
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}
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const (
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presetPrivateChat = "private_chat"
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presetTrustedPrivateChat = "trusted_private_chat"
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presetPublicChat = "public_chat"
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)
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const (
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historyVisibilityShared = "shared"
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// TODO: These should be implemented once history visibility is implemented
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// historyVisibilityWorldReadable = "world_readable"
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// historyVisibilityInvited = "invited"
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)
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func (r createRoomRequest) Validate() *util.JSONResponse {
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whitespace := "\t\n\x0b\x0c\r " // https://docs.python.org/2/library/string.html#string.whitespace
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// https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/handlers/room.py#L81
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// Synapse doesn't check for ':' but we will else it will break parsers badly which split things into 2 segments.
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if strings.ContainsAny(r.RoomAliasName, whitespace+":") {
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("room_alias_name cannot contain whitespace or ':'"),
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}
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}
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for _, userID := range r.Invite {
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// TODO: We should put user ID parsing code into gomatrixserverlib and use that instead
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// (see https://github.com/matrix-org/gomatrixserverlib/blob/3394e7c7003312043208aa73727d2256eea3d1f6/eventcontent.go#L347 )
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// It should be a struct (with pointers into a single string to avoid copying) and
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// we should update all refs to use UserID types rather than strings.
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// https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/types.py#L92
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if _, _, err := gomatrixserverlib.SplitID('@', userID); err != nil {
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("user id must be in the form @localpart:domain"),
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}
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}
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}
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switch r.Preset {
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case presetPrivateChat, presetTrustedPrivateChat, presetPublicChat, "":
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default:
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("preset must be any of 'private_chat', 'trusted_private_chat', 'public_chat'"),
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}
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}
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// Validate creation_content fields defined in the spec by marshalling the
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// creation_content map into bytes and then unmarshalling the bytes into
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// eventutil.CreateContent.
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creationContentBytes, err := json.Marshal(r.CreationContent)
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if err != nil {
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("malformed creation_content"),
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}
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}
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var CreationContent gomatrixserverlib.CreateContent
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err = json.Unmarshal(creationContentBytes, &CreationContent)
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if err != nil {
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("malformed creation_content"),
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}
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}
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return nil
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}
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// https://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-createroom
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type createRoomResponse struct {
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RoomID string `json:"room_id"`
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RoomAlias string `json:"room_alias,omitempty"` // in synapse not spec
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}
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// fledglingEvent is a helper representation of an event used when creating many events in succession.
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type fledglingEvent struct {
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Type string `json:"type"`
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StateKey string `json:"state_key"`
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Content interface{} `json:"content"`
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}
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// CreateRoom implements /createRoom
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func CreateRoom(
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req *http.Request, device *api.Device,
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cfg *config.ClientAPI,
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profileAPI api.ClientUserAPI, rsAPI roomserverAPI.ClientRoomserverAPI,
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asAPI appserviceAPI.AppServiceInternalAPI,
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) util.JSONResponse {
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var r createRoomRequest
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resErr := httputil.UnmarshalJSONRequest(req, &r)
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if resErr != nil {
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return *resErr
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}
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if resErr = r.Validate(); resErr != nil {
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return *resErr
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}
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evTime, err := httputil.ParseTSParam(req)
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if err != nil {
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return 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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}
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return createRoom(req.Context(), r, device, cfg, profileAPI, rsAPI, asAPI, evTime)
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}
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// createRoom implements /createRoom
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// nolint: gocyclo
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func createRoom(
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ctx context.Context,
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r createRoomRequest, device *api.Device,
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cfg *config.ClientAPI,
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profileAPI api.ClientUserAPI, rsAPI roomserverAPI.ClientRoomserverAPI,
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asAPI appserviceAPI.AppServiceInternalAPI,
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evTime time.Time,
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) util.JSONResponse {
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// TODO (#267): Check room ID doesn't clash with an existing one, and we
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// probably shouldn't be using pseudo-random strings, maybe GUIDs?
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roomID := fmt.Sprintf("!%s:%s", util.RandomString(16), cfg.Matrix.ServerName)
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logger := util.GetLogger(ctx)
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userID := device.UserID
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// Clobber keys: creator, room_version
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roomVersion := roomserverVersion.DefaultRoomVersion()
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if r.RoomVersion != "" {
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candidateVersion := gomatrixserverlib.RoomVersion(r.RoomVersion)
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_, roomVersionError := roomserverVersion.SupportedRoomVersion(candidateVersion)
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if roomVersionError != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.UnsupportedRoomVersion(roomVersionError.Error()),
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}
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}
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roomVersion = candidateVersion
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}
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// TODO: visibility/presets/raw initial state
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// TODO: Create room alias association
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// Make sure this doesn't fall into an application service's namespace though!
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logger.WithFields(log.Fields{
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"userID": userID,
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"roomID": roomID,
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"roomVersion": roomVersion,
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}).Info("Creating new room")
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profile, err := appserviceAPI.RetrieveUserProfile(ctx, userID, asAPI, profileAPI)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("appserviceAPI.RetrieveUserProfile failed")
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return jsonerror.InternalServerError()
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}
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createContent := map[string]interface{}{}
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if len(r.CreationContent) > 0 {
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if err = json.Unmarshal(r.CreationContent, &createContent); err != nil {
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util.GetLogger(ctx).WithError(err).Error("json.Unmarshal for creation_content failed")
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("invalid create content"),
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}
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}
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}
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createContent["creator"] = userID
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createContent["room_version"] = roomVersion
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powerLevelContent := eventutil.InitialPowerLevelsContent(userID)
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joinRuleContent := gomatrixserverlib.JoinRuleContent{
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JoinRule: gomatrixserverlib.Invite,
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}
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historyVisibilityContent := gomatrixserverlib.HistoryVisibilityContent{
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HistoryVisibility: historyVisibilityShared,
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}
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if r.PowerLevelContentOverride != nil {
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// Merge powerLevelContentOverride fields by unmarshalling it atop the defaults
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err = json.Unmarshal(r.PowerLevelContentOverride, &powerLevelContent)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("json.Unmarshal for power_level_content_override failed")
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("malformed power_level_content_override"),
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}
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}
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}
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switch r.Preset {
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case presetPrivateChat:
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joinRuleContent.JoinRule = gomatrixserverlib.Invite
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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case presetTrustedPrivateChat:
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joinRuleContent.JoinRule = gomatrixserverlib.Invite
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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for _, invitee := range r.Invite {
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powerLevelContent.Users[invitee] = 100
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}
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case presetPublicChat:
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joinRuleContent.JoinRule = gomatrixserverlib.Public
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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}
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createEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomCreate,
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Content: createContent,
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}
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powerLevelEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomPowerLevels,
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Content: powerLevelContent,
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}
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joinRuleEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomJoinRules,
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Content: joinRuleContent,
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}
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historyVisibilityEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomHistoryVisibility,
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Content: historyVisibilityContent,
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}
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membershipEvent := fledglingEvent{
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Type: gomatrixserverlib.MRoomMember,
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StateKey: userID,
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Content: gomatrixserverlib.MemberContent{
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Membership: gomatrixserverlib.Join,
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DisplayName: profile.DisplayName,
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AvatarURL: profile.AvatarURL,
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},
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}
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var nameEvent *fledglingEvent
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var topicEvent *fledglingEvent
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var guestAccessEvent *fledglingEvent
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var aliasEvent *fledglingEvent
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if r.Name != "" {
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nameEvent = &fledglingEvent{
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Type: gomatrixserverlib.MRoomName,
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Content: eventutil.NameContent{
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Name: r.Name,
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},
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}
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}
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if r.Topic != "" {
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topicEvent = &fledglingEvent{
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Type: gomatrixserverlib.MRoomTopic,
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Content: eventutil.TopicContent{
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Topic: r.Topic,
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},
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}
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}
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if r.GuestCanJoin {
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guestAccessEvent = &fledglingEvent{
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Type: gomatrixserverlib.MRoomGuestAccess,
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Content: eventutil.GuestAccessContent{
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GuestAccess: "can_join",
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},
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}
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}
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var roomAlias string
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if r.RoomAliasName != "" {
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roomAlias = fmt.Sprintf("#%s:%s", r.RoomAliasName, cfg.Matrix.ServerName)
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// check it's free TODO: This races but is better than nothing
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hasAliasReq := roomserverAPI.GetRoomIDForAliasRequest{
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Alias: roomAlias,
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IncludeAppservices: false,
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}
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var aliasResp roomserverAPI.GetRoomIDForAliasResponse
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err = rsAPI.GetRoomIDForAlias(ctx, &hasAliasReq, &aliasResp)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("aliasAPI.GetRoomIDForAlias failed")
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return jsonerror.InternalServerError()
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}
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if aliasResp.RoomID != "" {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.RoomInUse("Room ID already exists."),
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}
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}
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aliasEvent = &fledglingEvent{
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Type: gomatrixserverlib.MRoomCanonicalAlias,
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Content: eventutil.CanonicalAlias{
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Alias: roomAlias,
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},
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}
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}
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var initialStateEvents []fledglingEvent
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for i := range r.InitialState {
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if r.InitialState[i].StateKey != "" {
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initialStateEvents = append(initialStateEvents, r.InitialState[i])
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continue
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}
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switch r.InitialState[i].Type {
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case gomatrixserverlib.MRoomCreate:
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continue
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case gomatrixserverlib.MRoomPowerLevels:
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powerLevelEvent = r.InitialState[i]
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case gomatrixserverlib.MRoomJoinRules:
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joinRuleEvent = r.InitialState[i]
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case gomatrixserverlib.MRoomHistoryVisibility:
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historyVisibilityEvent = r.InitialState[i]
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case gomatrixserverlib.MRoomGuestAccess:
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guestAccessEvent = &r.InitialState[i]
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case gomatrixserverlib.MRoomName:
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nameEvent = &r.InitialState[i]
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case gomatrixserverlib.MRoomTopic:
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topicEvent = &r.InitialState[i]
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default:
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initialStateEvents = append(initialStateEvents, r.InitialState[i])
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}
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}
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// send events into the room in order of:
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// 1- m.room.create
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// 2- room creator join member
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// 3- m.room.power_levels
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// 4- m.room.join_rules
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// 5- m.room.history_visibility
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// 6- m.room.canonical_alias (opt)
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// 7- m.room.guest_access (opt)
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// 8- other initial state items
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// 9- m.room.name (opt)
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// 10- m.room.topic (opt)
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// 11- invite events (opt) - with is_direct flag if applicable TODO
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// 12- 3pid invite events (opt) TODO
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// This differs from Synapse slightly. Synapse would vary the ordering of 3-7
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// depending on if those events were in "initial_state" or not. This made it
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// harder to reason about, hence sticking to a strict static ordering.
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// TODO: Synapse has txn/token ID on each event. Do we need to do this here?
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eventsToMake := []fledglingEvent{
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createEvent, membershipEvent, powerLevelEvent, joinRuleEvent, historyVisibilityEvent,
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}
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if guestAccessEvent != nil {
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eventsToMake = append(eventsToMake, *guestAccessEvent)
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}
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eventsToMake = append(eventsToMake, initialStateEvents...)
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if nameEvent != nil {
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eventsToMake = append(eventsToMake, *nameEvent)
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}
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if topicEvent != nil {
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eventsToMake = append(eventsToMake, *topicEvent)
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}
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if aliasEvent != nil {
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// TODO: bit of a chicken and egg problem here as the alias doesn't exist and cannot until we have made the room.
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// This means we might fail creating the alias but say the canonical alias is something that doesn't exist.
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eventsToMake = append(eventsToMake, *aliasEvent)
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}
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// TODO: invite events
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// TODO: 3pid invite events
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var builtEvents []*gomatrixserverlib.HeaderedEvent
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authEvents := gomatrixserverlib.NewAuthEvents(nil)
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for i, e := range eventsToMake {
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depth := i + 1 // depth starts at 1
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builder := gomatrixserverlib.EventBuilder{
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Sender: userID,
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RoomID: roomID,
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Type: e.Type,
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StateKey: &e.StateKey,
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Depth: int64(depth),
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}
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err = builder.SetContent(e.Content)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("builder.SetContent failed")
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return jsonerror.InternalServerError()
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}
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if i > 0 {
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builder.PrevEvents = []gomatrixserverlib.EventReference{builtEvents[i-1].EventReference()}
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}
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var ev *gomatrixserverlib.Event
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ev, err = buildEvent(&builder, &authEvents, cfg, evTime, roomVersion)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildEvent failed")
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return jsonerror.InternalServerError()
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}
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if err = gomatrixserverlib.Allowed(ev, &authEvents); err != nil {
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util.GetLogger(ctx).WithError(err).Error("gomatrixserverlib.Allowed failed")
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return jsonerror.InternalServerError()
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}
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// Add the event to the list of auth events
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builtEvents = append(builtEvents, ev.Headered(roomVersion))
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err = authEvents.AddEvent(ev)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("authEvents.AddEvent failed")
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return jsonerror.InternalServerError()
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}
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}
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inputs := make([]roomserverAPI.InputRoomEvent, 0, len(builtEvents))
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for _, event := range builtEvents {
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inputs = append(inputs, roomserverAPI.InputRoomEvent{
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Kind: roomserverAPI.KindNew,
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Event: event,
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Origin: cfg.Matrix.ServerName,
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SendAsServer: roomserverAPI.DoNotSendToOtherServers,
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})
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}
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if err = roomserverAPI.SendInputRoomEvents(ctx, rsAPI, inputs, false); err != nil {
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util.GetLogger(ctx).WithError(err).Error("roomserverAPI.SendInputRoomEvents failed")
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return jsonerror.InternalServerError()
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}
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// TODO(#269): Reserve room alias while we create the room. This stops us
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// from creating the room but still failing due to the alias having already
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// been taken.
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if roomAlias != "" {
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aliasReq := roomserverAPI.SetRoomAliasRequest{
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Alias: roomAlias,
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RoomID: roomID,
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UserID: userID,
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}
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var aliasResp roomserverAPI.SetRoomAliasResponse
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err = rsAPI.SetRoomAlias(ctx, &aliasReq, &aliasResp)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("aliasAPI.SetRoomAlias failed")
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return jsonerror.InternalServerError()
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}
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if aliasResp.AliasExists {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.RoomInUse("Room alias already exists."),
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}
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|
}
|
|
}
|
|
|
|
// If this is a direct message then we should invite the participants.
|
|
if len(r.Invite) > 0 {
|
|
// Build some stripped state for the invite.
|
|
var globalStrippedState []gomatrixserverlib.InviteV2StrippedState
|
|
for _, event := range builtEvents {
|
|
// Chosen events from the spec:
|
|
// https://spec.matrix.org/v1.3/client-server-api/#stripped-state
|
|
switch event.Type() {
|
|
case gomatrixserverlib.MRoomCreate:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomName:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomAvatar:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomTopic:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomCanonicalAlias:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomEncryption:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomMember:
|
|
fallthrough
|
|
case gomatrixserverlib.MRoomJoinRules:
|
|
ev := event.Event
|
|
globalStrippedState = append(
|
|
globalStrippedState,
|
|
gomatrixserverlib.NewInviteV2StrippedState(ev),
|
|
)
|
|
}
|
|
}
|
|
|
|
// Process the invites.
|
|
for _, invitee := range r.Invite {
|
|
// Build the invite event.
|
|
inviteEvent, err := buildMembershipEvent(
|
|
ctx, invitee, "", profileAPI, device, gomatrixserverlib.Invite,
|
|
roomID, r.IsDirect, cfg, evTime, rsAPI, asAPI,
|
|
)
|
|
if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("buildMembershipEvent failed")
|
|
continue
|
|
}
|
|
inviteStrippedState := append(
|
|
globalStrippedState,
|
|
gomatrixserverlib.NewInviteV2StrippedState(inviteEvent.Event),
|
|
)
|
|
// Send the invite event to the roomserver.
|
|
var inviteRes roomserverAPI.PerformInviteResponse
|
|
event := inviteEvent.Headered(roomVersion)
|
|
if err := rsAPI.PerformInvite(ctx, &roomserverAPI.PerformInviteRequest{
|
|
Event: event,
|
|
InviteRoomState: inviteStrippedState,
|
|
RoomVersion: event.RoomVersion,
|
|
SendAsServer: string(cfg.Matrix.ServerName),
|
|
}, &inviteRes); err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("PerformInvite failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: jsonerror.InternalServerError(),
|
|
}
|
|
}
|
|
if inviteRes.Error != nil {
|
|
return inviteRes.Error.JSONResponse()
|
|
}
|
|
}
|
|
}
|
|
|
|
if r.Visibility == "public" {
|
|
// expose this room in the published room list
|
|
var pubRes roomserverAPI.PerformPublishResponse
|
|
if err := rsAPI.PerformPublish(ctx, &roomserverAPI.PerformPublishRequest{
|
|
RoomID: roomID,
|
|
Visibility: "public",
|
|
}, &pubRes); err != nil {
|
|
return jsonerror.InternalAPIError(ctx, err)
|
|
}
|
|
if pubRes.Error != nil {
|
|
// treat as non-fatal since the room is already made by this point
|
|
util.GetLogger(ctx).WithError(pubRes.Error).Error("failed to visibility:public")
|
|
}
|
|
}
|
|
|
|
response := createRoomResponse{
|
|
RoomID: roomID,
|
|
RoomAlias: roomAlias,
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: 200,
|
|
JSON: response,
|
|
}
|
|
}
|
|
|
|
// buildEvent fills out auth_events for the builder then builds the event
|
|
func buildEvent(
|
|
builder *gomatrixserverlib.EventBuilder,
|
|
provider gomatrixserverlib.AuthEventProvider,
|
|
cfg *config.ClientAPI,
|
|
evTime time.Time,
|
|
roomVersion gomatrixserverlib.RoomVersion,
|
|
) (*gomatrixserverlib.Event, error) {
|
|
eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
refs, err := eventsNeeded.AuthEventReferences(provider)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
builder.AuthEvents = refs
|
|
event, err := builder.Build(
|
|
evTime, cfg.Matrix.ServerName, cfg.Matrix.KeyID,
|
|
cfg.Matrix.PrivateKey, roomVersion,
|
|
)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot build event %s : Builder failed to build. %w", builder.Type, err)
|
|
}
|
|
return event, nil
|
|
}
|