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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "chrome/browser/extensions/api/socket/tls_socket.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "chrome/browser/extensions/api/api_resource.h" | |
9 #include "net/base/address_list.h" | |
10 #include "net/base/ip_endpoint.h" | |
11 #include "net/base/net_errors.h" | |
12 #include "net/base/rand_callback.h" | |
13 #include "net/socket/client_socket_factory.h" | |
14 #include "net/socket/client_socket_handle.h" | |
15 #include "net/socket/tcp_client_socket.h" | |
16 #include "net/url_request/url_request_context.h" | |
17 #include "net/url_request/url_request_context_getter.h" | |
18 | |
19 namespace { | |
Ryan Sleevi
2013/12/17 00:37:40
style nit: line break
lally
2014/01/09 18:47:16
Done.
| |
20 // Returns the SSL protocol version (as a uint16) represented by a string. | |
21 // Returns 0 if the string is invalid. Pulled from | |
22 // chrome/browser/net/ssl_config_service_manager_pref.cc. | |
23 uint16 SSLProtocolVersionFromString(const std::string& version_str) { | |
24 uint16 version = 0; // Invalid. | |
25 if (version_str == "ssl3") { | |
26 version = net::SSL_PROTOCOL_VERSION_SSL3; | |
27 } else if (version_str == "tls1") { | |
28 version = net::SSL_PROTOCOL_VERSION_TLS1; | |
29 } else if (version_str == "tls1.1") { | |
30 version = net::SSL_PROTOCOL_VERSION_TLS1_1; | |
31 } else if (version_str == "tls1.2") { | |
32 version = net::SSL_PROTOCOL_VERSION_TLS1_2; | |
33 } | |
34 return version; | |
35 } | |
36 | |
37 void TlsConnectDone(net::SSLClientSocket* ssl_socket, | |
38 const std::string& extension_id, | |
39 extensions::SecureCallback callback, int result) { | |
40 DVLOG(1) << "chrome.socket.secure: TlsConnectDone(): got back result " | |
41 << result; | |
42 | |
43 // No matter how the TLS connection attempt went, the underlying socket's | |
44 // no longer bound to the original TCPSocket. It belongs to ssl_socket_, | |
45 // which is promoted here to a new API-accessible socket (via a TLSSocket | |
46 // wrapper) or deleted. | |
47 if (result == net::OK) { | |
Ryan Sleevi
2013/12/17 00:37:40
Generally speaking, it's better to detect and hand
lally
2014/01/09 18:47:16
Done.
| |
48 // Wrap the StreamSocket in a TLSSocket (which matches the extension | |
49 // socket API). Set the handle of the socket to the new value, so that | |
50 // it can be used for read/write/close/etc. | |
51 extensions::TLSSocket* wrapper = | |
52 new extensions::TLSSocket(ssl_socket, extension_id); | |
53 | |
54 // Caller will end up deleting the prior TCPSocket, once it calls | |
55 // SetSocket(..,wrapper). | |
56 callback.Run(wrapper, result); | |
57 } else { | |
58 // Failed TLS connection. This'll delete the underlying TCPClientSocket. | |
Ryan Sleevi
2013/12/17 00:37:40
comment nit: This'll -> This will
lally
2014/01/09 18:47:16
Done.
| |
59 delete ssl_socket; | |
60 callback.Run(NULL, result); | |
61 } | |
62 } | |
63 } // namespace | |
Ryan Sleevi
2013/12/17 00:37:40
style nit: Line break
lally
2014/01/09 18:47:16
Done.
| |
64 | |
65 namespace extensions { | |
66 | |
67 const char kTLSSocketTypeInvalidError[] = | |
68 "Cannot listen on a socket that's already connected."; | |
69 | |
70 TLSSocket::TLSSocket(net::StreamSocket* tls_socket, | |
71 const std::string& owner_extension_id) | |
Ryan Sleevi
2013/12/17 00:37:40
style nit: unnecessary extra space
lally
2014/01/09 18:47:16
Done.
| |
72 : ResumableTCPSocket(owner_extension_id), | |
73 tls_socket_(tls_socket) { | |
74 } | |
75 | |
76 TLSSocket::~TLSSocket() { | |
77 Disconnect(); | |
78 } | |
79 | |
80 void TLSSocket::Connect(const std::string& address, | |
81 int port, | |
82 const CompletionCallback& callback) { | |
83 callback.Run(net::ERR_CONNECTION_FAILED); | |
84 } | |
85 | |
86 void TLSSocket::Disconnect() { | |
87 if (tls_socket_) { | |
88 tls_socket_->Disconnect(); | |
89 tls_socket_.reset(); | |
90 } | |
91 } | |
92 | |
93 void TLSSocket::Read(int count, | |
94 const ReadCompletionCallback& callback) { | |
95 DCHECK(!callback.is_null()); | |
96 | |
97 if (!read_callback_.is_null()) { | |
98 callback.Run(net::ERR_IO_PENDING, NULL); | |
99 return; | |
100 } | |
101 | |
102 if (count <= 0) { | |
103 callback.Run(net::ERR_INVALID_ARGUMENT, NULL); | |
104 return; | |
105 } | |
106 | |
107 if (!tls_socket_.get() || !IsConnected()) { | |
108 callback.Run(net::ERR_SOCKET_NOT_CONNECTED, NULL); | |
109 return; | |
110 } | |
111 | |
112 read_callback_ = callback; | |
113 scoped_refptr<net::IOBuffer> io_buffer = new net::IOBuffer(count); | |
114 int result = tls_socket_->Read( | |
115 io_buffer.get(), count, base::Bind(&TLSSocket::OnReadComplete, | |
116 base::Unretained(this), | |
117 io_buffer)); | |
118 | |
119 if (result != net::ERR_IO_PENDING) | |
120 OnReadComplete(io_buffer, result); | |
121 } | |
122 | |
123 void TLSSocket::OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer, | |
124 int result) { | |
125 DCHECK(!read_callback_.is_null()); | |
126 ReadCompletionCallback read_callback = read_callback_; | |
127 read_callback_.Reset(); | |
Ryan Sleevi
2013/12/17 00:37:40
STYLE: simplify this as
base::ResetAndReturn(&rea
lally
2014/01/09 18:47:16
Done.
| |
128 // Don't touch 'this' after the read callback. | |
129 read_callback.Run(result, io_buffer); | |
130 } | |
131 | |
132 int TLSSocket::WriteImpl(net::IOBuffer* io_buffer, | |
133 int io_buffer_size, | |
134 const net::CompletionCallback& callback) { | |
135 if (!IsConnected()) | |
136 return net::ERR_SOCKET_NOT_CONNECTED; | |
137 else | |
138 return tls_socket_->Write(io_buffer, io_buffer_size, callback); | |
Ryan Sleevi
2013/12/17 00:37:40
style: indent
lally
2014/01/09 18:47:16
Done.
| |
139 } | |
140 | |
141 bool TLSSocket::SetKeepAlive(bool enable, int delay) { | |
142 return false; | |
143 } | |
144 | |
145 bool TLSSocket::SetNoDelay(bool no_delay) { | |
146 return false; | |
147 } | |
148 | |
149 int TLSSocket::Listen(const std::string& address, int port, int backlog, | |
150 std::string* error_msg) { | |
151 *error_msg = kTLSSocketTypeInvalidError; | |
152 return net::ERR_NOT_IMPLEMENTED; | |
153 } | |
154 | |
155 void TLSSocket::Accept(const AcceptCompletionCallback &callback) { | |
156 callback.Run(net::ERR_FAILED, NULL); | |
157 } | |
158 | |
159 bool TLSSocket::IsConnected() { | |
160 return tls_socket_.get() && tls_socket_->IsConnected(); | |
161 } | |
162 | |
163 bool TLSSocket::GetPeerAddress(net::IPEndPoint* address) { | |
164 return IsConnected() && tls_socket_->GetPeerAddress(address); | |
165 } | |
166 | |
167 bool TLSSocket::GetLocalAddress(net::IPEndPoint* address) { | |
168 return IsConnected() && tls_socket_->GetLocalAddress(address); | |
169 } | |
170 | |
171 Socket::SocketType TLSSocket::GetSocketType() const { | |
172 return Socket::TYPE_TLS; | |
173 } | |
174 | |
175 // static | |
176 void TLSSocket::SecureTCPSocket( | |
177 Socket* socket, | |
178 Profile* profile, | |
179 net::URLRequestContextGetter* url_request_getter, | |
180 const std::string& extension_id, | |
181 api::socket::SecureOptions* options, | |
182 SecureCallback callback) { | |
183 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)); | |
184 DCHECK(profile); | |
185 | |
186 TCPSocket* tcp_socket = static_cast<TCPSocket*>(socket); | |
187 | |
188 if (!socket || socket->GetSocketType() != Socket::TYPE_TCP | |
189 || tcp_socket->ClientStream() == NULL || !socket->IsConnected()) { | |
Ryan Sleevi
2013/12/17 00:37:40
style: inproper binary operator wrapping - http://
lally
2014/01/09 18:47:16
Done.
| |
190 TlsConnectDone(NULL, extension_id, callback, net::ERR_INVALID_ARGUMENT); | |
191 return; | |
192 } | |
193 | |
194 net::IPEndPoint dest_host_port_pair; | |
195 socket->GetPeerAddress(&dest_host_port_pair); | |
Ryan Sleevi
2013/12/17 00:37:40
BUG: GetPeerAddress returns a result. Check it.
lally
2014/01/09 18:47:16
Done.
| |
196 net::HostPortPair host_port(socket->hostname(), dest_host_port_pair.port()); | |
197 | |
198 // Modeled after P2PSocketHostTcpBase::StartTls() | |
199 scoped_ptr<net::ClientSocketHandle> socket_handle( | |
200 new net::ClientSocketHandle()); | |
201 | |
202 // Set the socket handle. | |
203 socket_handle->SetSocket(scoped_ptr<net::StreamSocket>( | |
204 tcp_socket->ClientStream())); | |
205 | |
206 // Have the old socket release its hold on the client stream. | |
207 tcp_socket->Release(); | |
208 | |
209 net::SSLClientSocketContext context; | |
210 net::URLRequestContext* url_context = | |
211 url_request_getter->GetURLRequestContext(); | |
212 | |
213 url_request_getter->Release(); | |
Ryan Sleevi
2013/12/17 00:37:40
BUG: ?!? Seems incredibly dangerous here. You shou
lally
2014/01/09 18:47:16
I moved lifetime responsibility to the caller. No
| |
214 | |
215 DCHECK(url_context); | |
216 context.cert_verifier = url_context->cert_verifier(); | |
217 context.transport_security_state = url_context->transport_security_state(); | |
218 DCHECK(context.transport_security_state); | |
219 | |
220 // Fill in the SSL socket params. | |
221 net::SSLConfig ssl_config; | |
222 profile->GetSSLConfigService()->GetSSLConfig(&ssl_config); | |
223 if (options && options->tls_version.get()) { | |
224 uint16 version_min = 0, version_max = 0; | |
225 api::socket::TLSVersionConstraints* versions = options->tls_version.get(); | |
226 if (versions->min.get()) { | |
227 version_min = SSLProtocolVersionFromString(*versions->min.get()); | |
228 } | |
229 if (versions->max.get()) { | |
230 version_max = SSLProtocolVersionFromString(*versions->max.get()); | |
231 } | |
232 if (version_min) { | |
233 ssl_config.version_min = version_min; | |
234 } | |
235 if (version_max) { | |
236 ssl_config.version_max = version_max; | |
237 } | |
238 } | |
239 net::ClientSocketFactory* socket_factory = | |
240 net::ClientSocketFactory::GetDefaultFactory(); | |
241 | |
242 // Create the socket. | |
243 net::SSLClientSocket* ssl_socket = socket_factory->CreateSSLClientSocket( | |
244 socket_handle.Pass(), host_port, ssl_config, context).release(); | |
Ryan Sleevi
2013/12/17 00:37:40
DESIGN: Make your ownership explicit here.
For ex
lally
2014/01/09 18:47:16
Done.
| |
245 | |
246 // And try to connect. | |
247 int status = ssl_socket->Connect( | |
248 base::Bind(&TlsConnectDone, ssl_socket, extension_id, callback)); | |
249 | |
250 if (status != net::ERR_IO_PENDING) { | |
251 // Note: this can't recurse -- if 'socket' is already a connected | |
252 // TLSSocket, it will return TYPE_TLS instead of TYPE_TCP, failing before | |
253 // we get here. If the connection failed, the socket is closed below | |
254 // before the callback. If the caller tries to recurse into another | |
255 // secure() call, they must have either created a prior socket to try, or | |
256 // will have to go through an asynchronous Connect() call first. | |
257 TlsConnectDone(ssl_socket, extension_id, callback, status); | |
258 } | |
259 } | |
260 | |
261 } // namespace extensions | |
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