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1 // Copyright 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 "extensions/browser/api/socket/tls_socket.h" | |
6 | |
7 #include "base/callback_helpers.h" | |
8 #include "base/logging.h" | |
9 #include "extensions/browser/api/api_resource.h" | |
10 #include "net/base/address_list.h" | |
11 #include "net/base/ip_endpoint.h" | |
12 #include "net/base/net_errors.h" | |
13 #include "net/base/rand_callback.h" | |
14 #include "net/socket/client_socket_factory.h" | |
15 #include "net/socket/client_socket_handle.h" | |
16 #include "net/socket/ssl_client_socket.h" | |
17 #include "net/socket/tcp_client_socket.h" | |
18 #include "url/url_canon.h" | |
19 | |
20 namespace { | |
21 | |
22 // Returns the SSL protocol version (as a uint16) represented by a string. | |
23 // Returns 0 if the string is invalid. | |
24 uint16 SSLProtocolVersionFromString(const std::string& version_str) { | |
25 uint16 version = 0; // Invalid. | |
26 if (version_str == "ssl3") { | |
27 version = net::SSL_PROTOCOL_VERSION_SSL3; | |
28 } else if (version_str == "tls1") { | |
29 version = net::SSL_PROTOCOL_VERSION_TLS1; | |
30 } else if (version_str == "tls1.1") { | |
31 version = net::SSL_PROTOCOL_VERSION_TLS1_1; | |
32 } else if (version_str == "tls1.2") { | |
33 version = net::SSL_PROTOCOL_VERSION_TLS1_2; | |
34 } | |
35 return version; | |
36 } | |
37 | |
38 } // namespace | |
39 | |
40 namespace extensions { | |
41 | |
42 const char kTLSSocketTypeInvalidError[] = | |
43 "Cannot listen on a socket that is already connected."; | |
44 | |
45 TLSSocket::TLSSocket(scoped_ptr<net::StreamSocket> tls_socket, | |
46 const std::string& owner_extension_id) | |
47 : ResumableTCPSocket(owner_extension_id), tls_socket_(tls_socket.Pass()) { | |
48 } | |
49 | |
50 TLSSocket::~TLSSocket() { | |
51 Disconnect(); | |
52 } | |
53 | |
54 void TLSSocket::Connect(const std::string& address, | |
55 int port, | |
56 const CompletionCallback& callback) { | |
57 callback.Run(net::ERR_CONNECTION_FAILED); | |
58 } | |
59 | |
60 void TLSSocket::Disconnect() { | |
61 if (tls_socket_) { | |
62 tls_socket_->Disconnect(); | |
63 tls_socket_.reset(); | |
64 } | |
65 } | |
66 | |
67 void TLSSocket::Read(int count, const ReadCompletionCallback& callback) { | |
68 DCHECK(!callback.is_null()); | |
69 | |
70 if (!read_callback_.is_null()) { | |
71 callback.Run(net::ERR_IO_PENDING, NULL); | |
72 return; | |
73 } | |
74 | |
75 if (count <= 0) { | |
76 callback.Run(net::ERR_INVALID_ARGUMENT, NULL); | |
77 return; | |
78 } | |
79 | |
80 if (!tls_socket_.get() || !IsConnected()) { | |
81 callback.Run(net::ERR_SOCKET_NOT_CONNECTED, NULL); | |
82 return; | |
83 } | |
84 | |
85 read_callback_ = callback; | |
86 scoped_refptr<net::IOBuffer> io_buffer(new net::IOBuffer(count)); | |
87 int result = tls_socket_->Read( | |
88 io_buffer.get(), | |
89 count, | |
90 base::Bind( | |
91 &TLSSocket::OnReadComplete, base::Unretained(this), io_buffer)); | |
92 | |
93 if (result != net::ERR_IO_PENDING) { | |
94 OnReadComplete(io_buffer, result); | |
95 } | |
96 } | |
97 | |
98 void TLSSocket::OnReadComplete(const scoped_refptr<net::IOBuffer>& io_buffer, | |
99 int result) { | |
100 DCHECK(!read_callback_.is_null()); | |
101 base::ResetAndReturn(&read_callback_).Run(result, io_buffer); | |
102 } | |
103 | |
104 int TLSSocket::WriteImpl(net::IOBuffer* io_buffer, | |
105 int io_buffer_size, | |
106 const net::CompletionCallback& callback) { | |
107 if (!IsConnected()) { | |
108 return net::ERR_SOCKET_NOT_CONNECTED; | |
109 } | |
110 return tls_socket_->Write(io_buffer, io_buffer_size, callback); | |
111 } | |
112 | |
113 bool TLSSocket::SetKeepAlive(bool enable, int delay) { | |
114 return false; | |
115 } | |
116 | |
117 bool TLSSocket::SetNoDelay(bool no_delay) { | |
118 return false; | |
119 } | |
120 | |
121 int TLSSocket::Listen(const std::string& address, | |
122 int port, | |
123 int backlog, | |
124 std::string* error_msg) { | |
125 *error_msg = kTLSSocketTypeInvalidError; | |
126 return net::ERR_NOT_IMPLEMENTED; | |
127 } | |
128 | |
129 void TLSSocket::Accept(const AcceptCompletionCallback& callback) { | |
130 callback.Run(net::ERR_FAILED, NULL); | |
131 } | |
132 | |
133 bool TLSSocket::IsConnected() { | |
134 return tls_socket_.get() && tls_socket_->IsConnected(); | |
135 } | |
136 | |
137 bool TLSSocket::GetPeerAddress(net::IPEndPoint* address) { | |
138 return IsConnected() && tls_socket_->GetPeerAddress(address); | |
139 } | |
140 | |
141 bool TLSSocket::GetLocalAddress(net::IPEndPoint* address) { | |
142 return IsConnected() && tls_socket_->GetLocalAddress(address); | |
143 } | |
144 | |
145 Socket::SocketType TLSSocket::GetSocketType() const { | |
146 return Socket::TYPE_TLS; | |
147 } | |
148 | |
149 // static | |
150 void TLSSocket::UpgradeSocketToTLS( | |
151 Socket* socket, | |
152 scoped_refptr<net::SSLConfigService> ssl_config_service, | |
153 net::CertVerifier* cert_verifier, | |
154 net::TransportSecurityState* transport_security_state, | |
155 const std::string& extension_id, | |
156 core_api::socket::SecureOptions* options, | |
157 const TLSSocket::SecureCallback& callback) { | |
158 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)); | |
159 TCPSocket* tcp_socket = static_cast<TCPSocket*>(socket); | |
160 scoped_ptr<net::SSLClientSocket> null_sock; | |
161 | |
162 if (!tcp_socket || tcp_socket->GetSocketType() != Socket::TYPE_TCP || | |
163 !tcp_socket->ClientStream() || !tcp_socket->IsConnected() || | |
164 tcp_socket->HasPendingRead()) { | |
165 DVLOG(1) << "Failing before trying. socket is " << tcp_socket; | |
166 if (tcp_socket) { | |
167 DVLOG(1) << "type: " << tcp_socket->GetSocketType() | |
168 << ", ClientStream is " << tcp_socket->ClientStream() | |
169 << ", IsConnected: " << tcp_socket->IsConnected() | |
170 << ", HasPendingRead: " << tcp_socket->HasPendingRead(); | |
171 } | |
172 TlsConnectDone( | |
173 null_sock.Pass(), extension_id, callback, net::ERR_INVALID_ARGUMENT); | |
174 return; | |
175 } | |
176 | |
177 net::IPEndPoint dest_host_port_pair; | |
178 if (!tcp_socket->GetPeerAddress(&dest_host_port_pair)) { | |
179 DVLOG(1) << "Could not get peer address."; | |
180 TlsConnectDone( | |
181 null_sock.Pass(), extension_id, callback, net::ERR_INVALID_ARGUMENT); | |
182 return; | |
183 } | |
184 | |
185 // Convert any U-LABELs to A-LABELs. | |
186 url::CanonHostInfo host_info; | |
187 std::string canon_host = | |
188 net::CanonicalizeHost(tcp_socket->hostname(), &host_info); | |
189 | |
190 // Canonicalization shouldn't fail: the socket is already connected with a | |
191 // host, using this hostname. | |
192 if (host_info.family == url::CanonHostInfo::BROKEN) { | |
193 DVLOG(1) << "Could not canonicalize hostname"; | |
194 TlsConnectDone( | |
195 null_sock.Pass(), extension_id, callback, net::ERR_INVALID_ARGUMENT); | |
196 return; | |
197 } | |
198 | |
199 net::HostPortPair host_and_port(canon_host, dest_host_port_pair.port()); | |
200 | |
201 scoped_ptr<net::ClientSocketHandle> socket_handle( | |
202 new net::ClientSocketHandle()); | |
203 | |
204 // Set the socket handle to the socket's client stream (that should be the | |
205 // only one active here). Then have the old socket release ownership on | |
206 // that client stream. | |
207 socket_handle->SetSocket( | |
208 scoped_ptr<net::StreamSocket>(tcp_socket->ClientStream())); | |
209 tcp_socket->Release(); | |
210 | |
211 DCHECK(transport_security_state); | |
212 net::SSLClientSocketContext context; | |
213 context.cert_verifier = cert_verifier; | |
214 context.transport_security_state = transport_security_state; | |
215 | |
216 // Fill in the SSL socket params. | |
217 net::SSLConfig ssl_config; | |
218 ssl_config_service->GetSSLConfig(&ssl_config); | |
219 if (options && options->tls_version.get()) { | |
220 uint16 version_min = 0, version_max = 0; | |
221 core_api::socket::TLSVersionConstraints* versions = | |
222 options->tls_version.get(); | |
223 if (versions->min.get()) { | |
224 version_min = SSLProtocolVersionFromString(*versions->min.get()); | |
225 } | |
226 if (versions->max.get()) { | |
227 version_max = SSLProtocolVersionFromString(*versions->max.get()); | |
228 } | |
229 if (version_min) { | |
230 ssl_config.version_min = version_min; | |
231 } | |
232 if (version_max) { | |
233 ssl_config.version_max = version_max; | |
234 } | |
235 } | |
236 net::ClientSocketFactory* socket_factory = | |
237 net::ClientSocketFactory::GetDefaultFactory(); | |
238 | |
239 // Create the socket. | |
240 scoped_ptr<net::SSLClientSocket> ssl_socket( | |
241 socket_factory->CreateSSLClientSocket( | |
242 socket_handle.Pass(), host_and_port, ssl_config, context)); | |
243 | |
244 DVLOG(1) << "Attempting to secure a connection to " << tcp_socket->hostname() | |
245 << ":" << dest_host_port_pair.port(); | |
246 | |
247 // We need the contents of |ssl_socket| in order to invoke its Connect() | |
248 // method. It belongs to |ssl_socket|, and we own that until our internal | |
249 // callback (|connect_cb|, below) is invoked. | |
250 net::SSLClientSocket* saved_ssl_socket = ssl_socket.get(); | |
251 | |
252 // Try establish a TLS connection. Pass ownership of |ssl_socket| to | |
253 // TlsConnectDone, which will pass it on to |callback|. |connect_cb| below | |
254 // is only for UpgradeSocketToTLS use, and not be confused with the | |
255 // argument |callback|, which gets invoked by TlsConnectDone() after | |
256 // Connect() below returns. | |
257 base::Callback<void(int)> connect_cb(base::Bind(&TLSSocket::TlsConnectDone, | |
258 base::Passed(&ssl_socket), | |
259 extension_id, | |
260 callback)); | |
261 int status = saved_ssl_socket->Connect(connect_cb); | |
262 saved_ssl_socket = NULL; | |
263 | |
264 // Connect failed, and won't call the callback. Call it now. | |
265 if (status != net::ERR_IO_PENDING && status != net::OK) { | |
Ryan Sleevi
2014/07/15 00:18:45
If Connect() synchronously returns net::OK, it's n
lally
2014/07/16 16:19:44
Unexpected behavior for Connect(). I've fixed as
| |
266 // Note: this can't recurse -- if |socket| is already a connected | |
267 // TLSSocket, it will return TYPE_TLS instead of TYPE_TCP, causing | |
268 // UpgradeSocketToTLS() to fail with an error above. If | |
269 // UpgradeSocketToTLS() is called on |socket| twice, the call to | |
270 // Release() on |socket| above causes the additional call to | |
271 // fail with an error above. | |
272 DVLOG(1) << "Status is not IO-pending: " << net::ErrorToString(status); | |
273 connect_cb.Run(status); | |
274 } | |
275 } | |
276 | |
277 // static | |
278 void TLSSocket::TlsConnectDone(scoped_ptr<net::SSLClientSocket> ssl_socket, | |
Ryan Sleevi
2014/07/15 00:18:45
This doesn't need to be a static class member, doe
lally
2014/07/16 16:19:44
Good point, moved up and declaration removed from
| |
279 const std::string& extension_id, | |
280 const TLSSocket::SecureCallback& callback, | |
281 int result) { | |
282 DVLOG(1) << "Got back result " << result << " " << net::ErrorToString(result); | |
283 | |
284 // No matter how the TLS connection attempt went, the underlying socket's | |
285 // no longer bound to the original TCPSocket. It belongs to |ssl_socket|, | |
286 // which is promoted here to a new API-accessible socket (via a TLSSocket | |
287 // wrapper), or deleted. | |
288 if (result != net::OK) { | |
289 callback.Run(scoped_ptr<TLSSocket>(), result); | |
290 return; | |
291 }; | |
292 | |
293 // Wrap the StreamSocket in a TLSSocket, which matches the extension socket | |
294 // API. Set the handle of the socket to the new value, so that it can be | |
295 // used for read/write/close/etc. | |
296 scoped_ptr<TLSSocket> wrapper( | |
297 new TLSSocket(ssl_socket.PassAs<net::StreamSocket>(), extension_id)); | |
298 | |
299 // Caller will end up deleting the prior TCPSocket, once it calls | |
300 // SetSocket(..,wrapper). | |
301 callback.Run(wrapper.Pass(), result); | |
302 } | |
303 | |
304 } // namespace extensions | |
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