551 lines
17 KiB
Go
551 lines
17 KiB
Go
// Copyright 2023 The Matrix.org Foundation C.I.C.
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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 perform
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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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"github.com/getsentry/sentry-go"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/roomserver/storage"
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"github.com/matrix-org/dendrite/roomserver/types"
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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/gomatrixserverlib/fclient"
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"github.com/matrix-org/gomatrixserverlib/spec"
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"github.com/matrix-org/util"
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)
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const (
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historyVisibilityShared = "shared"
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)
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type Creator struct {
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DB storage.Database
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Cfg *config.RoomServer
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RSAPI api.RoomserverInternalAPI
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}
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// PerformCreateRoom handles all the steps necessary to create a new room.
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// nolint: gocyclo
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func (c *Creator) PerformCreateRoom(ctx context.Context, userID spec.UserID, roomID spec.RoomID, createRequest *api.PerformCreateRoomRequest) (string, *util.JSONResponse) {
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verImpl, err := gomatrixserverlib.GetRoomVersion(createRequest.RoomVersion)
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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: spec.BadJSON("unknown room version"),
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}
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}
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createContent := map[string]interface{}{}
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if len(createRequest.CreationContent) > 0 {
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if err = json.Unmarshal(createRequest.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: spec.BadJSON("invalid create content"),
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}
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}
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}
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var senderID spec.SenderID
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if createRequest.RoomVersion == gomatrixserverlib.RoomVersionPseudoIDs {
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// create user room key if needed
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key, keyErr := c.RSAPI.GetOrCreateUserRoomPrivateKey(ctx, userID, roomID)
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if keyErr != nil {
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util.GetLogger(ctx).WithError(keyErr).Error("GetOrCreateUserRoomPrivateKey failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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senderID = spec.SenderID(spec.Base64Bytes(key).Encode())
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} else {
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senderID = spec.SenderID(userID.String())
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}
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createContent["creator"] = senderID
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createContent["room_version"] = createRequest.RoomVersion
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powerLevelContent := eventutil.InitialPowerLevelsContent(string(senderID))
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joinRuleContent := gomatrixserverlib.JoinRuleContent{
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JoinRule: spec.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 createRequest.PowerLevelContentOverride != nil {
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// Merge powerLevelContentOverride fields by unmarshalling it atop the defaults
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err = json.Unmarshal(createRequest.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: spec.BadJSON("malformed power_level_content_override"),
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}
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}
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}
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var guestsCanJoin bool
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switch createRequest.StatePreset {
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case spec.PresetPrivateChat:
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joinRuleContent.JoinRule = spec.Invite
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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guestsCanJoin = true
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case spec.PresetTrustedPrivateChat:
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joinRuleContent.JoinRule = spec.Invite
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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for _, invitee := range createRequest.InvitedUsers {
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powerLevelContent.Users[invitee] = 100
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}
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guestsCanJoin = true
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case spec.PresetPublicChat:
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joinRuleContent.JoinRule = spec.Public
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historyVisibilityContent.HistoryVisibility = historyVisibilityShared
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}
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createEvent := gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomCreate,
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Content: createContent,
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}
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powerLevelEvent := gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomPowerLevels,
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Content: powerLevelContent,
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}
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joinRuleEvent := gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomJoinRules,
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Content: joinRuleContent,
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}
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historyVisibilityEvent := gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomHistoryVisibility,
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Content: historyVisibilityContent,
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}
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membershipEvent := gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomMember,
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StateKey: string(senderID),
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Content: gomatrixserverlib.MemberContent{
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Membership: spec.Join,
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DisplayName: createRequest.UserDisplayName,
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AvatarURL: createRequest.UserAvatarURL,
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},
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}
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var nameEvent *gomatrixserverlib.FledglingEvent
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var topicEvent *gomatrixserverlib.FledglingEvent
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var guestAccessEvent *gomatrixserverlib.FledglingEvent
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var aliasEvent *gomatrixserverlib.FledglingEvent
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if createRequest.RoomName != "" {
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nameEvent = &gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomName,
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Content: eventutil.NameContent{
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Name: createRequest.RoomName,
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},
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}
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}
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if createRequest.Topic != "" {
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topicEvent = &gomatrixserverlib.FledglingEvent{
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Type: spec.MRoomTopic,
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Content: eventutil.TopicContent{
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Topic: createRequest.Topic,
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},
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}
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}
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if guestsCanJoin {
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guestAccessEvent = &gomatrixserverlib.FledglingEvent{
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Type: spec.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 createRequest.RoomAliasName != "" {
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roomAlias = fmt.Sprintf("#%s:%s", createRequest.RoomAliasName, userID.Domain())
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// check it's free
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// TODO: This races but is better than nothing
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hasAliasReq := api.GetRoomIDForAliasRequest{
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Alias: roomAlias,
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IncludeAppservices: false,
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}
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var aliasResp api.GetRoomIDForAliasResponse
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err = c.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 "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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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: spec.RoomInUse("Room ID already exists."),
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}
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}
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aliasEvent = &gomatrixserverlib.FledglingEvent{
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Type: spec.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 []gomatrixserverlib.FledglingEvent
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for i := range createRequest.InitialState {
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if createRequest.InitialState[i].StateKey != "" {
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initialStateEvents = append(initialStateEvents, createRequest.InitialState[i])
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continue
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}
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switch createRequest.InitialState[i].Type {
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case spec.MRoomCreate:
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continue
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case spec.MRoomPowerLevels:
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powerLevelEvent = createRequest.InitialState[i]
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case spec.MRoomJoinRules:
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joinRuleEvent = createRequest.InitialState[i]
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case spec.MRoomHistoryVisibility:
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historyVisibilityEvent = createRequest.InitialState[i]
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case spec.MRoomGuestAccess:
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guestAccessEvent = &createRequest.InitialState[i]
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case spec.MRoomName:
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nameEvent = &createRequest.InitialState[i]
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case spec.MRoomTopic:
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topicEvent = &createRequest.InitialState[i]
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default:
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initialStateEvents = append(initialStateEvents, createRequest.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 := []gomatrixserverlib.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 []*types.HeaderedEvent
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authEvents := gomatrixserverlib.NewAuthEvents(nil)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("rsapi.QuerySenderIDForUser failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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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 := verImpl.NewEventBuilderFromProtoEvent(&gomatrixserverlib.ProtoEvent{
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SenderID: string(senderID),
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RoomID: roomID.String(),
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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 "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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if i > 0 {
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builder.PrevEvents = []string{builtEvents[i-1].EventID()}
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}
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var ev gomatrixserverlib.PDU
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if err = builder.AddAuthEvents(&authEvents); err != nil {
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util.GetLogger(ctx).WithError(err).Error("AddAuthEvents failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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ev, err = builder.Build(createRequest.EventTime, userID.Domain(), createRequest.KeyID, createRequest.PrivateKey)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildEvent failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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if err = gomatrixserverlib.Allowed(ev, &authEvents, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
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return c.RSAPI.QueryUserIDForSender(ctx, roomID, senderID)
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}); err != nil {
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util.GetLogger(ctx).WithError(err).Error("gomatrixserverlib.Allowed failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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// Add the event to the list of auth events
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builtEvents = append(builtEvents, &types.HeaderedEvent{PDU: ev})
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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 "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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}
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inputs := make([]api.InputRoomEvent, 0, len(builtEvents))
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for _, event := range builtEvents {
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inputs = append(inputs, api.InputRoomEvent{
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Kind: api.KindNew,
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Event: event,
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Origin: userID.Domain(),
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SendAsServer: api.DoNotSendToOtherServers,
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})
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}
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// first send the `m.room.create` event, so we have a roomNID
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if err = api.SendInputRoomEvents(ctx, c.RSAPI, userID.Domain(), inputs[:1], false); err != nil {
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util.GetLogger(ctx).WithError(err).Error("roomserverAPI.SendInputRoomEvents failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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// send the remaining events
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if err = api.SendInputRoomEvents(ctx, c.RSAPI, userID.Domain(), inputs[1:], false); err != nil {
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util.GetLogger(ctx).WithError(err).Error("roomserverAPI.SendInputRoomEvents failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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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 := api.SetRoomAliasRequest{
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Alias: roomAlias,
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RoomID: roomID.String(),
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UserID: userID.String(),
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}
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var aliasResp api.SetRoomAliasResponse
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err = c.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 "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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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: spec.RoomInUse("Room alias already exists."),
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}
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}
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}
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// If this is a direct message then we should invite the participants.
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if len(createRequest.InvitedUsers) > 0 {
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// Build some stripped state for the invite.
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var globalStrippedState []gomatrixserverlib.InviteStrippedState
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for _, event := range builtEvents {
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// Chosen events from the spec:
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// https://spec.matrix.org/v1.3/client-server-api/#stripped-state
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switch event.Type() {
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case spec.MRoomCreate:
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fallthrough
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case spec.MRoomName:
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fallthrough
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case spec.MRoomAvatar:
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fallthrough
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case spec.MRoomTopic:
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fallthrough
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case spec.MRoomCanonicalAlias:
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fallthrough
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case spec.MRoomEncryption:
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fallthrough
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case spec.MRoomMember:
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fallthrough
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case spec.MRoomJoinRules:
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ev := event.PDU
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globalStrippedState = append(
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globalStrippedState,
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gomatrixserverlib.NewInviteStrippedState(ev),
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)
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}
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}
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// Process the invites.
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var inviteEvent *types.HeaderedEvent
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for _, invitee := range createRequest.InvitedUsers {
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inviteeUserID, userIDErr := spec.NewUserID(invitee, true)
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if userIDErr != nil {
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util.GetLogger(ctx).WithError(userIDErr).Error("invalid UserID")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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inviteeSenderID, queryErr := c.RSAPI.QuerySenderIDForUser(ctx, roomID, *inviteeUserID)
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if queryErr != nil {
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util.GetLogger(ctx).WithError(queryErr).Error("rsapi.QuerySenderIDForUser failed")
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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inviteeString := string(inviteeSenderID)
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proto := gomatrixserverlib.ProtoEvent{
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SenderID: string(senderID),
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RoomID: roomID.String(),
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Type: "m.room.member",
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StateKey: &inviteeString,
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}
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content := gomatrixserverlib.MemberContent{
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Membership: spec.Invite,
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DisplayName: createRequest.UserDisplayName,
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AvatarURL: createRequest.UserAvatarURL,
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Reason: "",
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IsDirect: createRequest.IsDirect,
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}
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if err = proto.SetContent(content); err != nil {
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return "", &util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: spec.InternalServerError{},
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}
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}
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// Build the invite event.
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identity := &fclient.SigningIdentity{
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ServerName: userID.Domain(),
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KeyID: createRequest.KeyID,
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PrivateKey: createRequest.PrivateKey,
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}
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inviteEvent, err = eventutil.QueryAndBuildEvent(ctx, &proto, identity, createRequest.EventTime, c.RSAPI, nil)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("buildMembershipEvent failed")
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continue
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}
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inviteStrippedState := append(
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globalStrippedState,
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gomatrixserverlib.NewInviteStrippedState(inviteEvent.PDU),
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)
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// Send the invite event to the roomserver.
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event := inviteEvent
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err = c.RSAPI.PerformInvite(ctx, &api.PerformInviteRequest{
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Event: event,
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InviteRoomState: inviteStrippedState,
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RoomVersion: event.Version(),
|
|
SendAsServer: string(userID.Domain()),
|
|
})
|
|
switch e := err.(type) {
|
|
case api.ErrInvalidID:
|
|
return "", &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.Unknown(e.Error()),
|
|
}
|
|
case api.ErrNotAllowed:
|
|
return "", &util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden(e.Error()),
|
|
}
|
|
case nil:
|
|
default:
|
|
util.GetLogger(ctx).WithError(err).Error("PerformInvite failed")
|
|
sentry.CaptureException(err)
|
|
return "", &util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if createRequest.Visibility == spec.Public {
|
|
// expose this room in the published room list
|
|
if err = c.RSAPI.PerformPublish(ctx, &api.PerformPublishRequest{
|
|
RoomID: roomID.String(),
|
|
Visibility: spec.Public,
|
|
}); err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("failed to publish room")
|
|
return "", &util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: visibility/presets/raw initial state
|
|
// TODO: Create room alias association
|
|
// Make sure this doesn't fall into an application service's namespace though!
|
|
|
|
return roomAlias, nil
|
|
}
|