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// Copyright 2017 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 routing
import (
"fmt"
"net/http"
federationAPI "github.com/matrix-org/dendrite/federationapi/api"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrix"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/fclient"
"github.com/matrix-org/gomatrixserverlib/spec"
"github.com/matrix-org/util"
log "github.com/sirupsen/logrus"
)
// RoomAliasToID converts the queried alias into a room ID and returns it
func RoomAliasToID(
httpReq *http.Request,
federation fclient.FederationClient,
cfg *config.FederationAPI,
rsAPI roomserverAPI.FederationRoomserverAPI,
senderAPI federationAPI.FederationInternalAPI,
) util.JSONResponse {
roomAlias := httpReq.FormValue("room_alias")
if roomAlias == "" {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("Must supply room alias parameter."),
}
}
_, domain, err := gomatrixserverlib.SplitID('#', roomAlias)
if err != nil {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.BadJSON("Room alias must be in the form '#localpart:domain'"),
}
}
var resp fclient.RespDirectory
if domain == cfg.Matrix.ServerName {
queryReq := &roomserverAPI.GetRoomIDForAliasRequest{
Alias: roomAlias,
IncludeAppservices: true,
}
queryRes := &roomserverAPI.GetRoomIDForAliasResponse{}
if err = rsAPI.GetRoomIDForAlias(httpReq.Context(), queryReq, queryRes); err != nil {
util.GetLogger(httpReq.Context()).WithError(err).Error("aliasAPI.GetRoomIDForAlias failed")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
if queryRes.RoomID != "" {
serverQueryReq := federationAPI.QueryJoinedHostServerNamesInRoomRequest{RoomID: queryRes.RoomID}
var serverQueryRes federationAPI.QueryJoinedHostServerNamesInRoomResponse
if err = senderAPI.QueryJoinedHostServerNamesInRoom(httpReq.Context(), &serverQueryReq, &serverQueryRes); err != nil {
util.GetLogger(httpReq.Context()).WithError(err).Error("senderAPI.QueryJoinedHostServerNamesInRoom failed")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
resp = fclient.RespDirectory{
RoomID: queryRes.RoomID,
Servers: serverQueryRes.ServerNames,
}
} else {
// If no alias was found, return an error
return util.JSONResponse{
Code: http.StatusNotFound,
JSON: spec.NotFound(fmt.Sprintf("Room alias %s not found", roomAlias)),
}
}
} else {
resp, err = federation.LookupRoomAlias(httpReq.Context(), domain, cfg.Matrix.ServerName, roomAlias)
if err != nil {
switch x := err.(type) {
case gomatrix.HTTPError:
if x.Code == http.StatusNotFound {
return util.JSONResponse{
Code: http.StatusNotFound,
JSON: spec.NotFound("Room alias not found"),
}
}
}
// TODO: Return 502 if the remote server errored.
// TODO: Return 504 if the remote server timed out.
util.GetLogger(httpReq.Context()).WithError(err).Error("federation.LookupRoomAlias failed")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.InternalServerError{},
}
}
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: resp,
}
}
// Query the immediate children of a room/space
//
// Implements /_matrix/federation/v1/hierarchy/{roomID}
func QueryRoomHierarchy(httpReq *http.Request, request *fclient.FederationRequest, roomIDStr string, rsAPI roomserverAPI.FederationRoomserverAPI) util.JSONResponse {
parsedRoomID, err := spec.NewRoomID(roomIDStr)
if err != nil {
return util.JSONResponse{
Code: http.StatusNotFound,
JSON: spec.InvalidParam("room is unknown/forbidden"),
}
}
roomID := *parsedRoomID
suggestedOnly := false // Defaults to false (spec-defined)
switch httpReq.URL.Query().Get("suggested_only") {
case "true":
suggestedOnly = true
case "false":
case "": // Empty string is returned when query param is not set
default:
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: spec.InvalidParam("query parameter 'suggested_only', if set, must be 'true' or 'false'"),
}
}
walker := roomserverAPI.NewRoomHierarchyWalker(types.NewServerNameNotDevice(request.Origin()), roomID, suggestedOnly, 1)
discoveredRooms, inaccessibleRooms, _, err := rsAPI.QueryNextRoomHierarchyPage(httpReq.Context(), walker, -1)
if err != nil {
switch err.(type) {
case roomserverAPI.ErrRoomUnknownOrNotAllowed:
util.GetLogger(httpReq.Context()).WithError(err).Debugln("room unknown/forbidden when handling SS room hierarchy request")
return util.JSONResponse{
Code: http.StatusNotFound,
JSON: spec.NotFound("room is unknown/forbidden"),
}
default:
log.WithError(err).Errorf("failed to fetch next page of room hierarchy (SS API)")
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: spec.Unknown("internal server error"),
}
}
}
if len(discoveredRooms) == 0 {
util.GetLogger(httpReq.Context()).Debugln("no rooms found when handling SS room hierarchy request")
return util.JSONResponse{
Code: 404,
JSON: spec.NotFound("room is unknown/forbidden"),
}
}
return util.JSONResponse{
Code: 200,
JSON: fclient.RoomHierarchyResponse{
Room: discoveredRooms[0],
Children: discoveredRooms[1:],
InaccessibleChildren: inaccessibleRooms,
},
}
}
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