1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
// 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 (
"encoding/json"
"net/http"
"strings"
"github.com/gorilla/mux"
"github.com/matrix-org/dendrite/internal/httputil"
"github.com/matrix-org/dendrite/mediaapi/storage"
"github.com/matrix-org/dendrite/mediaapi/types"
"github.com/matrix-org/dendrite/setup/config"
userapi "github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
// configResponse is the response to GET /_matrix/media/r0/config
// https://matrix.org/docs/spec/client_server/latest#get-matrix-media-r0-config
type configResponse struct {
UploadSize *config.FileSizeBytes `json:"m.upload.size"`
}
// 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(
publicAPIMux *mux.Router,
cfg *config.MediaAPI,
rateLimit *config.RateLimiting,
db storage.Database,
userAPI userapi.MediaUserAPI,
client *gomatrixserverlib.Client,
) {
rateLimits := httputil.NewRateLimits(rateLimit)
v3mux := publicAPIMux.PathPrefix("/{apiversion:(?:r0|v1|v3)}/").Subrouter()
activeThumbnailGeneration := &types.ActiveThumbnailGeneration{
PathToResult: map[string]*types.ThumbnailGenerationResult{},
}
uploadHandler := httputil.MakeAuthAPI(
"upload", userAPI,
func(req *http.Request, dev *userapi.Device) util.JSONResponse {
if r := rateLimits.Limit(req, dev); r != nil {
return *r
}
return Upload(req, cfg, dev, db, activeThumbnailGeneration)
},
)
configHandler := httputil.MakeAuthAPI("config", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
if r := rateLimits.Limit(req, device); r != nil {
return *r
}
respondSize := &cfg.MaxFileSizeBytes
if cfg.MaxFileSizeBytes == 0 {
respondSize = nil
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: configResponse{UploadSize: respondSize},
}
})
v3mux.Handle("/upload", uploadHandler).Methods(http.MethodPost, http.MethodOptions)
v3mux.Handle("/config", configHandler).Methods(http.MethodGet, http.MethodOptions)
activeRemoteRequests := &types.ActiveRemoteRequests{
MXCToResult: map[string]*types.RemoteRequestResult{},
}
downloadHandler := makeDownloadAPI("download", cfg, rateLimits, db, client, activeRemoteRequests, activeThumbnailGeneration)
v3mux.Handle("/download/{serverName}/{mediaId}", downloadHandler).Methods(http.MethodGet, http.MethodOptions)
v3mux.Handle("/download/{serverName}/{mediaId}/{downloadName}", downloadHandler).Methods(http.MethodGet, http.MethodOptions)
v3mux.Handle("/thumbnail/{serverName}/{mediaId}",
makeDownloadAPI("thumbnail", cfg, rateLimits, db, client, activeRemoteRequests, activeThumbnailGeneration),
).Methods(http.MethodGet, http.MethodOptions)
}
func makeDownloadAPI(
name string,
cfg *config.MediaAPI,
rateLimits *httputil.RateLimits,
db storage.Database,
client *gomatrixserverlib.Client,
activeRemoteRequests *types.ActiveRemoteRequests,
activeThumbnailGeneration *types.ActiveThumbnailGeneration,
) http.HandlerFunc {
var counterVec *prometheus.CounterVec
if cfg.Matrix.Metrics.Enabled {
counterVec = promauto.NewCounterVec(
prometheus.CounterOpts{
Name: name,
Help: "Total number of media_api requests for either thumbnails or full downloads",
},
[]string{"code"},
)
}
httpHandler := func(w http.ResponseWriter, req *http.Request) {
req = util.RequestWithLogging(req)
// Set internal 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")
// Ratelimit requests
// NOTSPEC: The spec says everything at /media/ should be rate limited, but this causes issues with thumbnails (#2243)
if name != "thumbnail" {
if r := rateLimits.Limit(req, nil); r != nil {
if err := json.NewEncoder(w).Encode(r); err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusTooManyRequests)
return
}
}
vars, _ := httputil.URLDecodeMapValues(mux.Vars(req))
serverName := gomatrixserverlib.ServerName(vars["serverName"])
// For the purposes of loop avoidance, we will return a 404 if allow_remote is set to
// false in the query string and the target server name isn't our own.
// https://github.com/matrix-org/matrix-doc/pull/1265
if allowRemote := req.URL.Query().Get("allow_remote"); strings.ToLower(allowRemote) == "false" {
if serverName != cfg.Matrix.ServerName {
w.WriteHeader(http.StatusNotFound)
return
}
}
// Cache media for at least one day.
w.Header().Set("Cache-Control", "public,max-age=86400,s-maxage=86400")
Download(
w,
req,
serverName,
types.MediaID(vars["mediaId"]),
cfg,
db,
client,
activeRemoteRequests,
activeThumbnailGeneration,
name == "thumbnail",
vars["downloadName"],
)
}
var handlerFunc http.HandlerFunc
if counterVec != nil {
handlerFunc = promhttp.InstrumentHandlerCounter(counterVec, http.HandlerFunc(httpHandler))
} else {
handlerFunc = http.HandlerFunc(httpHandler)
}
return handlerFunc
}
|
