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
|
// 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/authtypes"
"github.com/matrix-org/dendrite/clientapi/httputil"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/dendrite/clientapi/producers"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/common/config"
"github.com/matrix-org/dendrite/common/transactions"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
// http://matrix.org/docs/spec/client_server/r0.2.0.html#put-matrix-client-r0-rooms-roomid-send-eventtype-txnid
// http://matrix.org/docs/spec/client_server/r0.2.0.html#put-matrix-client-r0-rooms-roomid-state-eventtype-statekey
type sendEventResponse struct {
EventID string `json:"event_id"`
}
// SendEvent implements:
// /rooms/{roomID}/send/{eventType}
// /rooms/{roomID}/send/{eventType}/{txnID}
// /rooms/{roomID}/state/{eventType}/{stateKey}
func SendEvent(
req *http.Request,
device *authtypes.Device,
roomID, eventType string, txnID, stateKey *string,
cfg config.Dendrite,
queryAPI api.RoomserverQueryAPI,
producer *producers.RoomserverProducer,
txnCache *transactions.Cache,
) util.JSONResponse {
if txnID != nil {
// Try to fetch response from transactionsCache
if res, ok := txnCache.FetchTransaction(*txnID); ok {
return *res
}
}
e, resErr := generateSendEvent(req, device, roomID, eventType, stateKey, cfg, queryAPI)
if resErr != nil {
return *resErr
}
var txnAndDeviceID *api.TransactionID
if txnID != nil {
txnAndDeviceID = &api.TransactionID{
TransactionID: *txnID,
DeviceID: device.ID,
}
}
// pass the new event to the roomserver and receive the correct event ID
// event ID in case of duplicate transaction is discarded
eventID, err := producer.SendEvents(
req.Context(), []gomatrixserverlib.Event{*e}, cfg.Matrix.ServerName, txnAndDeviceID,
)
if err != nil {
return httputil.LogThenError(req, err)
}
res := util.JSONResponse{
Code: http.StatusOK,
JSON: sendEventResponse{eventID},
}
// Add response to transactionsCache
if txnID != nil {
txnCache.AddTransaction(*txnID, &res)
}
return res
}
func generateSendEvent(
req *http.Request,
device *authtypes.Device,
roomID, eventType string, stateKey *string,
cfg config.Dendrite,
queryAPI api.RoomserverQueryAPI,
) (*gomatrixserverlib.Event, *util.JSONResponse) {
// parse the incoming http request
userID := device.UserID
var r map[string]interface{} // must be a JSON object
resErr := httputil.UnmarshalJSONRequest(req, &r)
if resErr != nil {
return nil, resErr
}
evTime, err := httputil.ParseTSParam(req)
if err != nil {
return nil, &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.InvalidArgumentValue(err.Error()),
}
}
// create the new event and set all the fields we can
builder := gomatrixserverlib.EventBuilder{
Sender: userID,
RoomID: roomID,
Type: eventType,
StateKey: stateKey,
}
err = builder.SetContent(r)
if err != nil {
resErr := httputil.LogThenError(req, err)
return nil, &resErr
}
var queryRes api.QueryLatestEventsAndStateResponse
e, err := common.BuildEvent(req.Context(), &builder, cfg, evTime, queryAPI, &queryRes)
if err == common.ErrRoomNoExists {
return nil, &util.JSONResponse{
Code: http.StatusNotFound,
JSON: jsonerror.NotFound("Room does not exist"),
}
} else if err != nil {
resErr := httputil.LogThenError(req, err)
return nil, &resErr
}
// check to see if this user can perform this operation
stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
for i := range queryRes.StateEvents {
stateEvents[i] = &queryRes.StateEvents[i]
}
provider := gomatrixserverlib.NewAuthEvents(stateEvents)
if err = gomatrixserverlib.Allowed(*e, &provider); err != nil {
return nil, &util.JSONResponse{
Code: http.StatusForbidden,
JSON: jsonerror.Forbidden(err.Error()), // TODO: Is this error string comprehensible to the client?
}
}
return e, nil
}
|
