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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// 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 consumers
import (
"context"
"encoding/json"
"fmt"
"github.com/Shopify/sarama"
eduserverAPI "github.com/matrix-org/dendrite/eduserver/api"
"github.com/matrix-org/dendrite/federationsender/queue"
"github.com/matrix-org/dendrite/federationsender/storage"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/keyserver/api"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/dendrite/setup/process"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
)
// KeyChangeConsumer consumes events that originate in key server.
type KeyChangeConsumer struct {
consumer *internal.ContinualConsumer
db storage.Database
queues *queue.OutgoingQueues
serverName gomatrixserverlib.ServerName
rsAPI roomserverAPI.RoomserverInternalAPI
}
// NewKeyChangeConsumer creates a new KeyChangeConsumer. Call Start() to begin consuming from key servers.
func NewKeyChangeConsumer(
process *process.ProcessContext,
cfg *config.KeyServer,
kafkaConsumer sarama.Consumer,
queues *queue.OutgoingQueues,
store storage.Database,
rsAPI roomserverAPI.RoomserverInternalAPI,
) *KeyChangeConsumer {
c := &KeyChangeConsumer{
consumer: &internal.ContinualConsumer{
Process: process,
ComponentName: "federationsender/keychange",
Topic: string(cfg.Matrix.Kafka.TopicFor(config.TopicOutputKeyChangeEvent)),
Consumer: kafkaConsumer,
PartitionStore: store,
},
queues: queues,
db: store,
serverName: cfg.Matrix.ServerName,
rsAPI: rsAPI,
}
c.consumer.ProcessMessage = c.onMessage
return c
}
// Start consuming from key servers
func (t *KeyChangeConsumer) Start() error {
if err := t.consumer.Start(); err != nil {
return fmt.Errorf("t.consumer.Start: %w", err)
}
return nil
}
// onMessage is called in response to a message received on the
// key change events topic from the key server.
func (t *KeyChangeConsumer) onMessage(msg *sarama.ConsumerMessage) error {
var m api.DeviceMessage
if err := json.Unmarshal(msg.Value, &m); err != nil {
logrus.WithError(err).Errorf("failed to read device message from key change topic")
return nil
}
switch m.Type {
case api.TypeCrossSigningUpdate:
return t.onCrossSigningMessage(m)
case api.TypeDeviceKeyUpdate:
fallthrough
default:
return t.onDeviceKeyMessage(m)
}
}
func (t *KeyChangeConsumer) onDeviceKeyMessage(m api.DeviceMessage) error {
logger := logrus.WithField("user_id", m.UserID)
// only send key change events which originated from us
_, originServerName, err := gomatrixserverlib.SplitID('@', m.UserID)
if err != nil {
logger.WithError(err).Error("Failed to extract domain from key change event")
return nil
}
if originServerName != t.serverName {
return nil
}
var queryRes roomserverAPI.QueryRoomsForUserResponse
err = t.rsAPI.QueryRoomsForUser(context.Background(), &roomserverAPI.QueryRoomsForUserRequest{
UserID: m.UserID,
WantMembership: "join",
}, &queryRes)
if err != nil {
logger.WithError(err).Error("failed to calculate joined rooms for user")
return nil
}
// send this key change to all servers who share rooms with this user.
destinations, err := t.db.GetJoinedHostsForRooms(context.Background(), queryRes.RoomIDs)
if err != nil {
logger.WithError(err).Error("failed to calculate joined hosts for rooms user is in")
return nil
}
// Pack the EDU and marshal it
edu := &gomatrixserverlib.EDU{
Type: gomatrixserverlib.MDeviceListUpdate,
Origin: string(t.serverName),
}
event := gomatrixserverlib.DeviceListUpdateEvent{
UserID: m.UserID,
DeviceID: m.DeviceID,
DeviceDisplayName: m.DisplayName,
StreamID: m.StreamID,
PrevID: prevID(m.StreamID),
Deleted: len(m.KeyJSON) == 0,
Keys: m.KeyJSON,
}
if edu.Content, err = json.Marshal(event); err != nil {
return err
}
logrus.Infof("Sending device list update message to %q", destinations)
return t.queues.SendEDU(edu, t.serverName, destinations)
}
func (t *KeyChangeConsumer) onCrossSigningMessage(m api.DeviceMessage) error {
output := m.CrossSigningKeyUpdate
_, host, err := gomatrixserverlib.SplitID('@', output.UserID)
if err != nil {
logrus.WithError(err).Errorf("fedsender key change consumer: user ID parse failure")
return nil
}
if host != gomatrixserverlib.ServerName(t.serverName) {
// Ignore any messages that didn't originate locally, otherwise we'll
// end up parroting information we received from other servers.
return nil
}
logger := logrus.WithField("user_id", output.UserID)
var queryRes roomserverAPI.QueryRoomsForUserResponse
err = t.rsAPI.QueryRoomsForUser(context.Background(), &roomserverAPI.QueryRoomsForUserRequest{
UserID: output.UserID,
WantMembership: "join",
}, &queryRes)
if err != nil {
logger.WithError(err).Error("fedsender key change consumer: failed to calculate joined rooms for user")
return nil
}
// send this key change to all servers who share rooms with this user.
destinations, err := t.db.GetJoinedHostsForRooms(context.Background(), queryRes.RoomIDs)
if err != nil {
logger.WithError(err).Error("fedsender key change consumer: failed to calculate joined hosts for rooms user is in")
return nil
}
// Pack the EDU and marshal it
edu := &gomatrixserverlib.EDU{
Type: eduserverAPI.MSigningKeyUpdate,
Origin: string(t.serverName),
}
if edu.Content, err = json.Marshal(output); err != nil {
logger.WithError(err).Error("fedsender key change consumer: failed to marshal output, dropping")
return nil
}
logger.Infof("Sending cross-signing update message to %q", destinations)
return t.queues.SendEDU(edu, t.serverName, destinations)
}
func prevID(streamID int) []int {
if streamID <= 1 {
return nil
}
return []int{streamID - 1}
}
|
