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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/protocol/jingle_chromoting_server.h"
#include "base/message_loop.h"
#include "remoting/base/constants.h"
#include "third_party/libjingle/source/talk/p2p/base/constants.h"
#include "third_party/libjingle/source/talk/p2p/base/transport.h"
#include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
using cricket::ContentDescription;
using cricket::SessionDescription;
using cricket::Session;
using cricket::SessionManager;
using buzz::QName;
namespace remoting {
namespace {
const char kDescriptionTag[] = "description";
const char kTypeTag[] = "type";
} // namespace
ChromotingContentDescription::ChromotingContentDescription(
const std::string& description)
: description_(description) {
}
JingleChromotingServer::JingleChromotingServer(
MessageLoop* message_loop)
: message_loop_(message_loop),
session_manager_(NULL),
allow_local_ips_(false),
closed_(false) {
DCHECK(message_loop_);
}
void JingleChromotingServer::Init(
const std::string& local_jid,
cricket::SessionManager* session_manager,
NewConnectionCallback* new_connection_callback) {
if (MessageLoop::current() != message_loop()) {
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(
this, &JingleChromotingServer::Init,
local_jid, session_manager, new_connection_callback));
return;
}
DCHECK(session_manager);
DCHECK(new_connection_callback);
local_jid_ = local_jid;
new_connection_callback_.reset(new_connection_callback);
session_manager_ = session_manager;
session_manager_->AddClient(kChromotingXmlNamespace, this);
}
JingleChromotingServer::~JingleChromotingServer() {
DCHECK(closed_);
}
void JingleChromotingServer::Close(Task* closed_task) {
if (MessageLoop::current() != message_loop()) {
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleChromotingServer::Close,
closed_task));
return;
}
if (!closed_) {
// Close all connections.
session_manager_->RemoveClient(kChromotingXmlNamespace);
while (!connections_.empty()) {
Session* session = connections_.front()->ReleaseSession();
session_manager_->DestroySession(session);
connections_.pop_front();
}
closed_ = true;
}
closed_task->Run();
delete closed_task;
}
void JingleChromotingServer::set_allow_local_ips(bool allow_local_ips) {
allow_local_ips_ = allow_local_ips;
}
scoped_refptr<ChromotingConnection> JingleChromotingServer::Connect(
const std::string& jid,
ChromotingConnection::StateChangeCallback* state_change_callback) {
// Can be called from any thread.
scoped_refptr<JingleChromotingConnection> connection =
new JingleChromotingConnection(this);
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleChromotingServer::DoConnect,
connection, jid, state_change_callback));
return connection;
}
void JingleChromotingServer::DoConnect(
scoped_refptr<JingleChromotingConnection> connection,
const std::string& jid,
ChromotingConnection::StateChangeCallback* state_change_callback) {
DCHECK_EQ(message_loop(), MessageLoop::current());
Session* session = session_manager_->CreateSession(
local_jid_, kChromotingXmlNamespace);
// Initialize connection object before we send initiate stanza.
connection->SetStateChangeCallback(state_change_callback);
connection->Init(session);
connections_.push_back(connection);
session->Initiate(jid, CreateSessionDescription());
}
MessageLoop* JingleChromotingServer::message_loop() {
return message_loop_;
}
void JingleChromotingServer::OnSessionCreate(
Session* session, bool incoming) {
DCHECK_EQ(message_loop(), MessageLoop::current());
// Allow local connections if neccessary.
session->set_allow_local_ips(allow_local_ips_);
// If this is an outcoming session, the the connection object is already
// created.
if (incoming) {
JingleChromotingConnection* connection =
new JingleChromotingConnection(this);
connections_.push_back(connection);
connection->Init(session);
}
}
void JingleChromotingServer::OnSessionDestroy(Session* session) {
DCHECK_EQ(message_loop(), MessageLoop::current());
std::list<scoped_refptr<JingleChromotingConnection> >::iterator it;
for (it = connections_.begin(); it != connections_.end(); ++it) {
if ((*it)->HasSession(session)) {
(*it)->ReleaseSession();
connections_.erase(it);
return;
}
}
}
void JingleChromotingServer::AcceptConnection(
JingleChromotingConnection* connection,
Session* session) {
bool accept = false;
// Always reject connection if we are closed or there is no callback.
if (!closed_ && new_connection_callback_.get())
new_connection_callback_->Run(connection, &accept);
if (accept)
session->Accept(CreateSessionDescription());
else
session->Reject(cricket::STR_TERMINATE_DECLINE);
}
bool JingleChromotingServer::ParseContent(
cricket::SignalingProtocol protocol,
const buzz::XmlElement* element,
const cricket::ContentDescription** content,
cricket::ParseError* error) {
if (element->Name() == QName(kChromotingXmlNamespace, kDescriptionTag)) {
const buzz::XmlElement* type_elem =
element->FirstNamed(QName(kChromotingXmlNamespace, kTypeTag));
if (type_elem != NULL) {
*content = new ChromotingContentDescription(type_elem->BodyText());
return true;
}
}
LOG(ERROR) << "Invalid description: " << element->Str();
return false;
}
// WriteContent creates content description for chromoting session. The
// description looks as follows:
// <description xmlns="google:remoting">
// <type>description_text</type>
// </description>
// Currently description_text is always empty.
//
// TODO(sergeyu): Add more information to the content description. E.g.
// protocol version, etc.
bool JingleChromotingServer::WriteContent(
cricket::SignalingProtocol protocol,
const cricket::ContentDescription* content,
buzz::XmlElement** elem,
cricket::WriteError* error) {
const ChromotingContentDescription* desc =
static_cast<const ChromotingContentDescription*>(content);
QName desc_tag(kChromotingXmlNamespace, kDescriptionTag);
buzz::XmlElement* root = new buzz::XmlElement(desc_tag, true);
QName type_tag(kChromotingXmlNamespace, kTypeTag);
buzz::XmlElement* type_elem = new buzz::XmlElement(type_tag);
type_elem->SetBodyText(desc->description());
root->AddElement(type_elem);
*elem = root;
return true;
}
SessionDescription* JingleChromotingServer::CreateSessionDescription() {
SessionDescription* desc = new SessionDescription();
desc->AddContent("chromoting", kChromotingXmlNamespace,
new ChromotingContentDescription(""));
return desc;
}
} // namespace remoting
|
