mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-14 07:41:40 +00:00
329 lines
10 KiB
Go
329 lines
10 KiB
Go
// 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 routing
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/matrix-org/dendrite/clientapi/jsonerror"
|
|
"github.com/matrix-org/dendrite/internal/eventutil"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/util"
|
|
"github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// MakeLeave implements the /make_leave API
|
|
func MakeLeave(
|
|
httpReq *http.Request,
|
|
request *gomatrixserverlib.FederationRequest,
|
|
cfg *config.FederationAPI,
|
|
rsAPI api.FederationRoomserverAPI,
|
|
roomID, userID string,
|
|
) util.JSONResponse {
|
|
_, domain, err := gomatrixserverlib.SplitID('@', userID)
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("Invalid UserID"),
|
|
}
|
|
}
|
|
if domain != request.Origin() {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden("The leave must be sent by the server of the user"),
|
|
}
|
|
}
|
|
|
|
// Try building an event for the server
|
|
builder := gomatrixserverlib.EventBuilder{
|
|
Sender: userID,
|
|
RoomID: roomID,
|
|
Type: "m.room.member",
|
|
StateKey: &userID,
|
|
}
|
|
err = builder.SetContent(map[string]interface{}{"membership": gomatrixserverlib.Leave})
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("builder.SetContent failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
identity, err := cfg.Matrix.SigningIdentityFor(request.Destination())
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound(
|
|
fmt.Sprintf("Server name %q does not exist", request.Destination()),
|
|
),
|
|
}
|
|
}
|
|
|
|
var queryRes api.QueryLatestEventsAndStateResponse
|
|
event, err := eventutil.QueryAndBuildEvent(httpReq.Context(), &builder, cfg.Matrix, identity, time.Now(), rsAPI, &queryRes)
|
|
if err == eventutil.ErrRoomNoExists {
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("Room does not exist"),
|
|
}
|
|
} else if e, ok := err.(gomatrixserverlib.BadJSONError); ok {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON(e.Error()),
|
|
}
|
|
} else if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("eventutil.BuildEvent failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
// If the user has already left then just return their last leave
|
|
// event. This means that /send_leave will be a no-op, which helps
|
|
// to reject invites multiple times - hopefully.
|
|
for _, state := range queryRes.StateEvents {
|
|
if !state.StateKeyEquals(userID) {
|
|
continue
|
|
}
|
|
if mem, merr := state.Membership(); merr == nil && mem == gomatrixserverlib.Leave {
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: map[string]interface{}{
|
|
"room_version": event.RoomVersion,
|
|
"event": state,
|
|
},
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that the leave is allowed or not
|
|
stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
|
|
for i := range queryRes.StateEvents {
|
|
stateEvents[i] = queryRes.StateEvents[i].Event
|
|
}
|
|
provider := gomatrixserverlib.NewAuthEvents(stateEvents)
|
|
if err = gomatrixserverlib.Allowed(event.Event, &provider); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden(err.Error()),
|
|
}
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: map[string]interface{}{
|
|
"room_version": event.RoomVersion,
|
|
"event": builder,
|
|
},
|
|
}
|
|
}
|
|
|
|
// SendLeave implements the /send_leave API
|
|
// nolint:gocyclo
|
|
func SendLeave(
|
|
httpReq *http.Request,
|
|
request *gomatrixserverlib.FederationRequest,
|
|
cfg *config.FederationAPI,
|
|
rsAPI api.FederationRoomserverAPI,
|
|
keys gomatrixserverlib.JSONVerifier,
|
|
roomID, eventID string,
|
|
) util.JSONResponse {
|
|
verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
|
|
verRes := api.QueryRoomVersionForRoomResponse{}
|
|
if err := rsAPI.QueryRoomVersionForRoom(httpReq.Context(), &verReq, &verRes); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.UnsupportedRoomVersion(err.Error()),
|
|
}
|
|
}
|
|
|
|
// Decode the event JSON from the request.
|
|
event, err := gomatrixserverlib.NewEventFromUntrustedJSON(request.Content(), verRes.RoomVersion)
|
|
switch err.(type) {
|
|
case gomatrixserverlib.BadJSONError:
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON(err.Error()),
|
|
}
|
|
case nil:
|
|
default:
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.NotJSON("The request body could not be decoded into valid JSON. " + err.Error()),
|
|
}
|
|
}
|
|
|
|
// Check that the room ID is correct.
|
|
if event.RoomID() != roomID {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("The room ID in the request path must match the room ID in the leave event JSON"),
|
|
}
|
|
}
|
|
|
|
// Check that the event ID is correct.
|
|
if event.EventID() != eventID {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("The event ID in the request path must match the event ID in the leave event JSON"),
|
|
}
|
|
}
|
|
|
|
if event.StateKey() == nil || event.StateKeyEquals("") {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("No state key was provided in the leave event."),
|
|
}
|
|
}
|
|
if !event.StateKeyEquals(event.Sender()) {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("Event state key must match the event sender."),
|
|
}
|
|
}
|
|
|
|
// Check that the sender belongs to the server that is sending us
|
|
// the request. By this point we've already asserted that the sender
|
|
// and the state key are equal so we don't need to check both.
|
|
var serverName gomatrixserverlib.ServerName
|
|
if _, serverName, err = gomatrixserverlib.SplitID('@', event.Sender()); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden("The sender of the join is invalid"),
|
|
}
|
|
} else if serverName != request.Origin() {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden("The sender does not match the server that originated the request"),
|
|
}
|
|
}
|
|
|
|
// Check if the user has already left. If so, no-op!
|
|
queryReq := &api.QueryLatestEventsAndStateRequest{
|
|
RoomID: roomID,
|
|
StateToFetch: []gomatrixserverlib.StateKeyTuple{
|
|
{
|
|
EventType: gomatrixserverlib.MRoomMember,
|
|
StateKey: *event.StateKey(),
|
|
},
|
|
},
|
|
}
|
|
queryRes := &api.QueryLatestEventsAndStateResponse{}
|
|
err = rsAPI.QueryLatestEventsAndState(httpReq.Context(), queryReq, queryRes)
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryLatestEventsAndState failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
// The room doesn't exist or we weren't ever joined to it. Might as well
|
|
// no-op here.
|
|
if !queryRes.RoomExists || len(queryRes.StateEvents) == 0 {
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: struct{}{},
|
|
}
|
|
}
|
|
// Check if we're recycling a previous leave event.
|
|
if event.EventID() == queryRes.StateEvents[0].EventID() {
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: struct{}{},
|
|
}
|
|
}
|
|
// We are/were joined/invited/banned or something. Check if
|
|
// we can no-op here.
|
|
if len(queryRes.StateEvents) == 1 {
|
|
if mem, merr := queryRes.StateEvents[0].Membership(); merr == nil && mem == gomatrixserverlib.Leave {
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: struct{}{},
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that the event is signed by the server sending the request.
|
|
redacted, err := gomatrixserverlib.RedactEventJSON(event.JSON(), event.Version())
|
|
if err != nil {
|
|
logrus.WithError(err).Errorf("XXX: leave.go")
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("The event JSON could not be redacted"),
|
|
}
|
|
}
|
|
verifyRequests := []gomatrixserverlib.VerifyJSONRequest{{
|
|
ServerName: serverName,
|
|
Message: redacted,
|
|
AtTS: event.OriginServerTS(),
|
|
StrictValidityChecking: true,
|
|
}}
|
|
verifyResults, err := keys.VerifyJSONs(httpReq.Context(), verifyRequests)
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("keys.VerifyJSONs failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
if verifyResults[0].Error != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden("The leave must be signed by the server it originated on"),
|
|
}
|
|
}
|
|
|
|
// check membership is set to leave
|
|
mem, err := event.Membership()
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("event.Membership failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("missing content.membership key"),
|
|
}
|
|
}
|
|
if mem != gomatrixserverlib.Leave {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("The membership in the event content must be set to leave"),
|
|
}
|
|
}
|
|
|
|
// Send the events to the room server.
|
|
// We are responsible for notifying other servers that the user has left
|
|
// the room, so set SendAsServer to cfg.Matrix.ServerName
|
|
var response api.InputRoomEventsResponse
|
|
if err := rsAPI.InputRoomEvents(httpReq.Context(), &api.InputRoomEventsRequest{
|
|
InputRoomEvents: []api.InputRoomEvent{
|
|
{
|
|
Kind: api.KindNew,
|
|
Event: event.Headered(verRes.RoomVersion),
|
|
SendAsServer: string(cfg.Matrix.ServerName),
|
|
TransactionID: nil,
|
|
},
|
|
},
|
|
}, &response); err != nil {
|
|
return jsonerror.InternalAPIError(httpReq.Context(), err)
|
|
}
|
|
|
|
if response.ErrMsg != "" {
|
|
util.GetLogger(httpReq.Context()).WithField(logrus.ErrorKey, response.ErrMsg).WithField("not_allowed", response.NotAllowed).Error("producer.SendEvents failed")
|
|
if response.NotAllowed {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.Forbidden(response.ErrMsg),
|
|
}
|
|
}
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: struct{}{},
|
|
}
|
|
}
|