400 lines
11 KiB
Go
400 lines
11 KiB
Go
// Copyright 2022 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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"database/sql"
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"encoding/json"
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"fmt"
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"time"
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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/internal/input"
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"github.com/matrix-org/dendrite/roomserver/internal/query"
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"github.com/matrix-org/dendrite/roomserver/storage"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/gomatrixserverlib"
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)
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type Admin struct {
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DB storage.Database
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Cfg *config.RoomServer
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Queryer *query.Queryer
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Inputer *input.Inputer
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Leaver *Leaver
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}
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// PerformEvacuateRoom will remove all local users from the given room.
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func (r *Admin) PerformAdminEvacuateRoom(
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ctx context.Context,
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req *api.PerformAdminEvacuateRoomRequest,
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res *api.PerformAdminEvacuateRoomResponse,
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) error {
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roomInfo, err := r.DB.RoomInfo(ctx, req.RoomID)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.RoomInfo: %s", err),
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}
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return nil
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}
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if roomInfo == nil || roomInfo.IsStub() {
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res.Error = &api.PerformError{
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Code: api.PerformErrorNoRoom,
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Msg: fmt.Sprintf("Room %s not found", req.RoomID),
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}
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return nil
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}
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memberNIDs, err := r.DB.GetMembershipEventNIDsForRoom(ctx, roomInfo.RoomNID, true, true)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.GetMembershipEventNIDsForRoom: %s", err),
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}
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return nil
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}
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memberEvents, err := r.DB.Events(ctx, memberNIDs)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.Events: %s", err),
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}
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return nil
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}
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inputEvents := make([]api.InputRoomEvent, 0, len(memberEvents))
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res.Affected = make([]string, 0, len(memberEvents))
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latestReq := &api.QueryLatestEventsAndStateRequest{
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RoomID: req.RoomID,
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}
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latestRes := &api.QueryLatestEventsAndStateResponse{}
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if err = r.Queryer.QueryLatestEventsAndState(ctx, latestReq, latestRes); err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Queryer.QueryLatestEventsAndState: %s", err),
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}
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return nil
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}
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prevEvents := latestRes.LatestEvents
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for _, memberEvent := range memberEvents {
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if memberEvent.StateKey() == nil {
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continue
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}
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var memberContent gomatrixserverlib.MemberContent
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if err = json.Unmarshal(memberEvent.Content(), &memberContent); err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("json.Unmarshal: %s", err),
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}
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return nil
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}
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memberContent.Membership = gomatrixserverlib.Leave
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stateKey := *memberEvent.StateKey()
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fledglingEvent := &gomatrixserverlib.EventBuilder{
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RoomID: req.RoomID,
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Type: gomatrixserverlib.MRoomMember,
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StateKey: &stateKey,
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Sender: stateKey,
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PrevEvents: prevEvents,
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}
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_, senderDomain, err := gomatrixserverlib.SplitID('@', fledglingEvent.Sender)
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if err != nil {
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continue
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}
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if fledglingEvent.Content, err = json.Marshal(memberContent); err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("json.Marshal: %s", err),
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}
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return nil
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}
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eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(fledglingEvent)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("gomatrixserverlib.StateNeededForEventBuilder: %s", err),
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}
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return nil
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}
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identity, err := r.Cfg.Matrix.SigningIdentityFor(senderDomain)
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if err != nil {
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continue
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}
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event, err := eventutil.BuildEvent(ctx, fledglingEvent, r.Cfg.Matrix, identity, time.Now(), &eventsNeeded, latestRes)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("eventutil.BuildEvent: %s", err),
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}
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return nil
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}
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inputEvents = append(inputEvents, api.InputRoomEvent{
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Kind: api.KindNew,
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Event: event,
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Origin: senderDomain,
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SendAsServer: string(senderDomain),
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})
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res.Affected = append(res.Affected, stateKey)
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prevEvents = []gomatrixserverlib.EventReference{
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event.EventReference(),
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}
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}
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inputReq := &api.InputRoomEventsRequest{
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InputRoomEvents: inputEvents,
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Asynchronous: true,
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}
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inputRes := &api.InputRoomEventsResponse{}
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return r.Inputer.InputRoomEvents(ctx, inputReq, inputRes)
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}
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func (r *Admin) PerformAdminEvacuateUser(
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ctx context.Context,
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req *api.PerformAdminEvacuateUserRequest,
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res *api.PerformAdminEvacuateUserResponse,
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) error {
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_, domain, err := gomatrixserverlib.SplitID('@', req.UserID)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("Malformed user ID: %s", err),
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}
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return nil
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}
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if !r.Cfg.Matrix.IsLocalServerName(domain) {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: "Can only evacuate local users using this endpoint",
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}
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return nil
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}
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roomIDs, err := r.DB.GetRoomsByMembership(ctx, req.UserID, gomatrixserverlib.Join)
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if err != nil && err != sql.ErrNoRows {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.GetRoomsByMembership: %s", err),
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}
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return nil
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}
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inviteRoomIDs, err := r.DB.GetRoomsByMembership(ctx, req.UserID, gomatrixserverlib.Invite)
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if err != nil && err != sql.ErrNoRows {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.GetRoomsByMembership: %s", err),
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}
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return nil
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}
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for _, roomID := range append(roomIDs, inviteRoomIDs...) {
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leaveReq := &api.PerformLeaveRequest{
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RoomID: roomID,
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UserID: req.UserID,
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}
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leaveRes := &api.PerformLeaveResponse{}
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outputEvents, err := r.Leaver.PerformLeave(ctx, leaveReq, leaveRes)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Leaver.PerformLeave: %s", err),
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}
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return nil
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}
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if len(outputEvents) == 0 {
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continue
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}
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if err := r.Inputer.OutputProducer.ProduceRoomEvents(roomID, outputEvents); err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Inputer.WriteOutputEvents: %s", err),
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}
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return nil
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}
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res.Affected = append(res.Affected, roomID)
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}
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return nil
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}
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func (r *Admin) PerformAdminDownloadState(
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ctx context.Context,
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req *api.PerformAdminDownloadStateRequest,
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res *api.PerformAdminDownloadStateResponse,
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) error {
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_, senderDomain, err := r.Cfg.Matrix.SplitLocalID('@', req.UserID)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Cfg.Matrix.SplitLocalID: %s", err),
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}
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return nil
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}
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roomInfo, err := r.DB.RoomInfo(ctx, req.RoomID)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.RoomInfo: %s", err),
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}
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return nil
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}
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if roomInfo == nil || roomInfo.IsStub() {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("room %q not found", req.RoomID),
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}
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return nil
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}
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fwdExtremities, _, depth, err := r.DB.LatestEventIDs(ctx, roomInfo.RoomNID)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.DB.LatestEventIDs: %s", err),
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}
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return nil
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}
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authEventMap := map[string]*gomatrixserverlib.Event{}
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stateEventMap := map[string]*gomatrixserverlib.Event{}
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for _, fwdExtremity := range fwdExtremities {
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var state gomatrixserverlib.RespState
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state, err = r.Inputer.FSAPI.LookupState(ctx, r.Inputer.ServerName, req.ServerName, req.RoomID, fwdExtremity.EventID, roomInfo.RoomVersion)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Inputer.FSAPI.LookupState (%q): %s", fwdExtremity.EventID, err),
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}
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return nil
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}
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for _, authEvent := range state.AuthEvents.UntrustedEvents(roomInfo.RoomVersion) {
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if err = authEvent.VerifyEventSignatures(ctx, r.Inputer.KeyRing); err != nil {
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continue
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}
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authEventMap[authEvent.EventID()] = authEvent
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}
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for _, stateEvent := range state.StateEvents.UntrustedEvents(roomInfo.RoomVersion) {
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if err = stateEvent.VerifyEventSignatures(ctx, r.Inputer.KeyRing); err != nil {
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continue
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}
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stateEventMap[stateEvent.EventID()] = stateEvent
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}
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}
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authEvents := make([]*gomatrixserverlib.HeaderedEvent, 0, len(authEventMap))
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stateEvents := make([]*gomatrixserverlib.HeaderedEvent, 0, len(stateEventMap))
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stateIDs := make([]string, 0, len(stateEventMap))
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for _, authEvent := range authEventMap {
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authEvents = append(authEvents, authEvent.Headered(roomInfo.RoomVersion))
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}
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for _, stateEvent := range stateEventMap {
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stateEvents = append(stateEvents, stateEvent.Headered(roomInfo.RoomVersion))
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stateIDs = append(stateIDs, stateEvent.EventID())
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}
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builder := &gomatrixserverlib.EventBuilder{
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Type: "org.matrix.dendrite.state_download",
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Sender: req.UserID,
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RoomID: req.RoomID,
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Content: gomatrixserverlib.RawJSON("{}"),
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}
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eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("gomatrixserverlib.StateNeededForEventBuilder: %s", err),
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}
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return nil
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}
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queryRes := &api.QueryLatestEventsAndStateResponse{
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RoomExists: true,
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RoomVersion: roomInfo.RoomVersion,
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LatestEvents: fwdExtremities,
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StateEvents: stateEvents,
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Depth: depth,
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}
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identity, err := r.Cfg.Matrix.SigningIdentityFor(senderDomain)
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if err != nil {
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return err
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}
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ev, err := eventutil.BuildEvent(ctx, builder, r.Cfg.Matrix, identity, time.Now(), &eventsNeeded, queryRes)
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if err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("eventutil.BuildEvent: %s", err),
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}
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return nil
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}
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inputReq := &api.InputRoomEventsRequest{
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Asynchronous: false,
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}
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inputRes := &api.InputRoomEventsResponse{}
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for _, authEvent := range append(authEvents, stateEvents...) {
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inputReq.InputRoomEvents = append(inputReq.InputRoomEvents, api.InputRoomEvent{
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Kind: api.KindOutlier,
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Event: authEvent,
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})
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}
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inputReq.InputRoomEvents = append(inputReq.InputRoomEvents, api.InputRoomEvent{
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Kind: api.KindNew,
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Event: ev,
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Origin: r.Cfg.Matrix.ServerName,
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HasState: true,
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StateEventIDs: stateIDs,
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SendAsServer: string(r.Cfg.Matrix.ServerName),
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})
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if err := r.Inputer.InputRoomEvents(ctx, inputReq, inputRes); err != nil {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: fmt.Sprintf("r.Inputer.InputRoomEvents: %s", err),
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}
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return nil
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}
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if inputRes.ErrMsg != "" {
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res.Error = &api.PerformError{
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Code: api.PerformErrorBadRequest,
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Msg: inputRes.ErrMsg,
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}
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}
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return nil
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}
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