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dendrite/roomserver/internal/perform/perform_admin.go

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// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package perform
import (
"context"
"encoding/json"
"fmt"
"time"
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/internal/input"
"github.com/matrix-org/dendrite/roomserver/internal/query"
"github.com/matrix-org/dendrite/roomserver/storage"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrixserverlib"
)
type Admin struct {
DB storage.Database
Cfg *config.RoomServer
Queryer *query.Queryer
Inputer *input.Inputer
}
// PerformEvacuateRoom will remove all local users from the given room.
func (r *Admin) PerformAdminEvacuateRoom(
ctx context.Context,
req *api.PerformAdminEvacuateRoomRequest,
res *api.PerformAdminEvacuateRoomResponse,
) {
roomInfo, err := r.DB.RoomInfo(ctx, req.RoomID)
if err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("r.DB.RoomInfo: %s", err),
}
return
}
if roomInfo == nil || roomInfo.IsStub {
res.Error = &api.PerformError{
Code: api.PerformErrorNoRoom,
Msg: fmt.Sprintf("Room %s not found", req.RoomID),
}
return
}
memberNIDs, err := r.DB.GetMembershipEventNIDsForRoom(ctx, roomInfo.RoomNID, true, true)
if err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("r.DB.GetMembershipEventNIDsForRoom: %s", err),
}
return
}
memberEvents, err := r.DB.Events(ctx, memberNIDs)
if err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("r.DB.Events: %s", err),
}
return
}
inputEvents := make([]api.InputRoomEvent, 0, len(memberEvents))
res.Affected = make([]string, 0, len(memberEvents))
latestReq := &api.QueryLatestEventsAndStateRequest{
RoomID: req.RoomID,
}
latestRes := &api.QueryLatestEventsAndStateResponse{}
if err = r.Queryer.QueryLatestEventsAndState(ctx, latestReq, latestRes); err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("r.Queryer.QueryLatestEventsAndState: %s", err),
}
return
}
prevEvents := latestRes.LatestEvents
for _, memberEvent := range memberEvents {
if memberEvent.StateKey() == nil {
continue
}
var memberContent gomatrixserverlib.MemberContent
if err = json.Unmarshal(memberEvent.Content(), &memberContent); err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("json.Unmarshal: %s", err),
}
return
}
memberContent.Membership = gomatrixserverlib.Leave
stateKey := *memberEvent.StateKey()
fledglingEvent := &gomatrixserverlib.EventBuilder{
RoomID: req.RoomID,
Type: gomatrixserverlib.MRoomMember,
StateKey: &stateKey,
Sender: stateKey,
PrevEvents: prevEvents,
}
if fledglingEvent.Content, err = json.Marshal(memberContent); err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("json.Marshal: %s", err),
}
return
}
eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(fledglingEvent)
if err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("gomatrixserverlib.StateNeededForEventBuilder: %s", err),
}
return
}
event, err := eventutil.BuildEvent(ctx, fledglingEvent, r.Cfg.Matrix, time.Now(), &eventsNeeded, latestRes)
if err != nil {
res.Error = &api.PerformError{
Code: api.PerformErrorBadRequest,
Msg: fmt.Sprintf("eventutil.BuildEvent: %s", err),
}
return
}
inputEvents = append(inputEvents, api.InputRoomEvent{
Kind: api.KindNew,
Event: event,
Origin: r.Cfg.Matrix.ServerName,
SendAsServer: string(r.Cfg.Matrix.ServerName),
})
res.Affected = append(res.Affected, stateKey)
prevEvents = []gomatrixserverlib.EventReference{
event.EventReference(),
}
}
inputReq := &api.InputRoomEventsRequest{
InputRoomEvents: inputEvents,
Asynchronous: true,
}
inputRes := &api.InputRoomEventsResponse{}
r.Inputer.InputRoomEvents(ctx, inputReq, inputRes)
}