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dendrite/mediaapi/routing/routing.go
Andrew Morgan 33a1392541
Encode URLs properly (#728)
We were escaping the URL before performing any pattern matching on it.
This meant that if you sent data that URLdecoded to a "/", it would count as
a "/" in the URL, potentially causing a 404. This was causing some flaky tests
with some randomly-generated query parameters.

Now, we keep URLs encoded while doing the pattern matching, and only afterwards
do we URL decode each query parameter individually before passing them to their
respective handler functions.

github.com/gorilla/mux was also updated to v1.7.3 to fix a bug with URL encoding and subrouters.
2019-07-03 16:38:50 +01:00

108 lines
3.4 KiB
Go

// Copyright 2017 Vector Creations 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 (
"net/http"
"github.com/matrix-org/dendrite/clientapi/auth"
"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
"github.com/gorilla/mux"
"github.com/matrix-org/dendrite/clientapi/auth/storage/devices"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/common/config"
"github.com/matrix-org/dendrite/mediaapi/storage"
"github.com/matrix-org/dendrite/mediaapi/types"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/prometheus/client_golang/prometheus"
)
const pathPrefixR0 = "/_matrix/media/r0"
// Setup registers the media API HTTP handlers
//
// Due to Setup being used to call many other functions, a gocyclo nolint is
// applied:
// nolint: gocyclo
func Setup(
apiMux *mux.Router,
cfg *config.Dendrite,
db *storage.Database,
deviceDB *devices.Database,
client *gomatrixserverlib.Client,
) {
r0mux := apiMux.PathPrefix(pathPrefixR0).Subrouter()
activeThumbnailGeneration := &types.ActiveThumbnailGeneration{
PathToResult: map[string]*types.ThumbnailGenerationResult{},
}
authData := auth.Data{
AccountDB: nil,
DeviceDB: deviceDB,
AppServices: nil,
}
// TODO: Add AS support
r0mux.Handle("/upload", common.MakeAuthAPI(
"upload", authData,
func(req *http.Request, _ *authtypes.Device) util.JSONResponse {
return Upload(req, cfg, db, activeThumbnailGeneration)
},
)).Methods(http.MethodPost, http.MethodOptions)
activeRemoteRequests := &types.ActiveRemoteRequests{
MXCToResult: map[string]*types.RemoteRequestResult{},
}
r0mux.Handle("/download/{serverName}/{mediaId}",
makeDownloadAPI("download", cfg, db, client, activeRemoteRequests, activeThumbnailGeneration),
).Methods(http.MethodGet, http.MethodOptions)
r0mux.Handle("/thumbnail/{serverName}/{mediaId}",
makeDownloadAPI("thumbnail", cfg, db, client, activeRemoteRequests, activeThumbnailGeneration),
).Methods(http.MethodGet, http.MethodOptions)
}
func makeDownloadAPI(
name string,
cfg *config.Dendrite,
db *storage.Database,
client *gomatrixserverlib.Client,
activeRemoteRequests *types.ActiveRemoteRequests,
activeThumbnailGeneration *types.ActiveThumbnailGeneration,
) http.HandlerFunc {
return prometheus.InstrumentHandler(name, http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req = util.RequestWithLogging(req)
// Set common headers returned regardless of the outcome of the request
util.SetCORSHeaders(w)
// Content-Type will be overridden in case of returning file data, else we respond with JSON-formatted errors
w.Header().Set("Content-Type", "application/json")
vars, _ := common.URLDecodeMapValues(mux.Vars(req))
Download(
w,
req,
gomatrixserverlib.ServerName(vars["serverName"]),
types.MediaID(vars["mediaId"]),
cfg,
db,
client,
activeRemoteRequests,
activeThumbnailGeneration,
name == "thumbnail",
)
}))
}