/
perform_unpeek.go
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/
perform_unpeek.go
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// Copyright 2020 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package perform
import (
"context"
"fmt"
"strings"
fsAPI "github.com/matrix-org/dendrite/federationapi/api"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/internal/input"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/spec"
)
type Unpeeker struct {
ServerName spec.ServerName
Cfg *config.RoomServer
FSAPI fsAPI.RoomserverFederationAPI
Inputer *input.Inputer
}
// PerformUnpeek handles un-peeking matrix rooms, including over federation by talking to the federationapi.
func (r *Unpeeker) PerformUnpeek(
ctx context.Context,
roomID, userID, deviceID string,
) error {
// FIXME: there's way too much duplication with performJoin
_, domain, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
return api.ErrInvalidID{Err: fmt.Errorf("supplied user ID %q in incorrect format", userID)}
}
if !r.Cfg.Matrix.IsLocalServerName(domain) {
return api.ErrInvalidID{Err: fmt.Errorf("user %q does not belong to this homeserver", userID)}
}
if strings.HasPrefix(roomID, "!") {
return r.performUnpeekRoomByID(ctx, roomID, userID, deviceID)
}
return api.ErrInvalidID{Err: fmt.Errorf("room ID %q is invalid", roomID)}
}
func (r *Unpeeker) performUnpeekRoomByID(
_ context.Context,
roomID, userID, deviceID string,
) (err error) {
// Get the domain part of the room ID.
_, _, err = gomatrixserverlib.SplitID('!', roomID)
if err != nil {
return api.ErrInvalidID{Err: fmt.Errorf("room ID %q is invalid: %w", roomID, err)}
}
// TODO: handle federated peeks
// By this point, if req.RoomIDOrAlias contained an alias, then
// it will have been overwritten with a room ID by performPeekRoomByAlias.
// We should now include this in the response so that the CS API can
// return the right room ID.
return r.Inputer.OutputProducer.ProduceRoomEvents(roomID, []api.OutputEvent{
{
Type: api.OutputTypeRetirePeek,
RetirePeek: &api.OutputRetirePeek{
RoomID: roomID,
UserID: userID,
DeviceID: deviceID,
},
},
})
}