1 // Copyright (c) 2012 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/tcp_socket.h" 6 7 #include "chrome/browser/extensions/api/api_resource.h" 8 #include "net/base/address_list.h" 9 #include "net/base/ip_endpoint.h" 10 #include "net/base/net_errors.h" 11 #include "net/base/rand_callback.h" 12 #include "net/socket/tcp_client_socket.h" 13 14 namespace extensions { 15 16 const char kTCPSocketTypeInvalidError[] = 17 "Cannot call both connect and listen on the same socket."; 18 const char kSocketListenError[] = "Could not listen on the specified port."; 19 20 static base::LazyInstance<ProfileKeyedAPIFactory< 21 ApiResourceManager<ResumableTCPSocket> > > 22 g_factory = LAZY_INSTANCE_INITIALIZER; 23 24 // static 25 template <> 26 ProfileKeyedAPIFactory<ApiResourceManager<ResumableTCPSocket> >* 27 ApiResourceManager<ResumableTCPSocket>::GetFactoryInstance() { 28 return &g_factory.Get(); 29 } 30 31 static base::LazyInstance<ProfileKeyedAPIFactory< 32 ApiResourceManager<ResumableTCPServerSocket> > > 33 g_server_factory = LAZY_INSTANCE_INITIALIZER; 34 35 // static 36 template <> 37 ProfileKeyedAPIFactory<ApiResourceManager<ResumableTCPServerSocket> >* 38 ApiResourceManager<ResumableTCPServerSocket>::GetFactoryInstance() { 39 return &g_server_factory.Get(); 40 } 41 42 TCPSocket::TCPSocket(const std::string& owner_extension_id) 43 : Socket(owner_extension_id), 44 socket_mode_(UNKNOWN) { 45 } 46 47 TCPSocket::TCPSocket(net::TCPClientSocket* tcp_client_socket, 48 const std::string& owner_extension_id, 49 bool is_connected) 50 : Socket(owner_extension_id), 51 socket_(tcp_client_socket), 52 socket_mode_(CLIENT) { 53 this->is_connected_ = is_connected; 54 } 55 56 TCPSocket::TCPSocket(net::TCPServerSocket* tcp_server_socket, 57 const std::string& owner_extension_id) 58 : Socket(owner_extension_id), 59 server_socket_(tcp_server_socket), 60 socket_mode_(SERVER) { 61 } 62 63 // static 64 TCPSocket* TCPSocket::CreateSocketForTesting( 65 net::TCPClientSocket* tcp_client_socket, 66 const std::string& owner_extension_id, 67 bool is_connected) { 68 return new TCPSocket(tcp_client_socket, owner_extension_id, is_connected); 69 } 70 71 // static 72 TCPSocket* TCPSocket::CreateServerSocketForTesting( 73 net::TCPServerSocket* tcp_server_socket, 74 const std::string& owner_extension_id) { 75 return new TCPSocket(tcp_server_socket, owner_extension_id); 76 } 77 78 TCPSocket::~TCPSocket() { 79 Disconnect(); 80 } 81 82 void TCPSocket::Connect(const std::string& address, 83 int port, 84 const CompletionCallback& callback) { 85 DCHECK(!callback.is_null()); 86 87 if (socket_mode_ == SERVER || !connect_callback_.is_null()) { 88 callback.Run(net::ERR_CONNECTION_FAILED); 89 return; 90 } 91 DCHECK(!server_socket_.get()); 92 socket_mode_ = CLIENT; 93 connect_callback_ = callback; 94 95 int result = net::ERR_CONNECTION_FAILED; 96 do { 97 if (is_connected_) 98 break; 99 100 net::AddressList address_list; 101 if (!StringAndPortToAddressList(address, port, &address_list)) { 102 result = net::ERR_ADDRESS_INVALID; 103 break; 104 } 105 106 socket_.reset(new net::TCPClientSocket(address_list, NULL, 107 net::NetLog::Source())); 108 109 connect_callback_ = callback; 110 result = socket_->Connect(base::Bind( 111 &TCPSocket::OnConnectComplete, base::Unretained(this))); 112 } while (false); 113 114 if (result != net::ERR_IO_PENDING) 115 OnConnectComplete(result); 116 } 117 118 void TCPSocket::Disconnect() { 119 is_connected_ = false; 120 if (socket_.get()) 121 socket_->Disconnect(); 122 server_socket_.reset(NULL); 123 connect_callback_.Reset(); 124 read_callback_.Reset(); 125 accept_callback_.Reset(); 126 accept_socket_.reset(NULL); 127 } 128 129 int TCPSocket::Bind(const std::string& address, int port) { 130 return net::ERR_FAILED; 131 } 132 133 void TCPSocket::Read(int count, 134 const ReadCompletionCallback& callback) { 135 DCHECK(!callback.is_null()); 136 137 if (socket_mode_ != CLIENT) { 138 callback.Run(net::ERR_FAILED, NULL); 139 return; 140 } 141 142 if (!read_callback_.is_null()) { 143 callback.Run(net::ERR_IO_PENDING, NULL); 144 return; 145 } 146 147 if (count < 0) { 148 callback.Run(net::ERR_INVALID_ARGUMENT, NULL); 149 return; 150 } 151 152 if (!socket_.get() || !IsConnected()) { 153 callback.Run(net::ERR_SOCKET_NOT_CONNECTED, NULL); 154 return; 155 } 156 157 read_callback_ = callback; 158 scoped_refptr<net::IOBuffer> io_buffer = new net::IOBuffer(count); 159 int result = socket_->Read(io_buffer.get(), count, 160 base::Bind(&TCPSocket::OnReadComplete, base::Unretained(this), 161 io_buffer)); 162 163 if (result != net::ERR_IO_PENDING) 164 OnReadComplete(io_buffer, result); 165 } 166 167 void TCPSocket::RecvFrom(int count, 168 const RecvFromCompletionCallback& callback) { 169 callback.Run(net::ERR_FAILED, NULL, NULL, 0); 170 } 171 172 void TCPSocket::SendTo(scoped_refptr<net::IOBuffer> io_buffer, 173 int byte_count, 174 const std::string& address, 175 int port, 176 const CompletionCallback& callback) { 177 callback.Run(net::ERR_FAILED); 178 } 179 180 bool TCPSocket::SetKeepAlive(bool enable, int delay) { 181 if (!socket_.get()) 182 return false; 183 return socket_->SetKeepAlive(enable, delay); 184 } 185 186 bool TCPSocket::SetNoDelay(bool no_delay) { 187 if (!socket_.get()) 188 return false; 189 return socket_->SetNoDelay(no_delay); 190 } 191 192 int TCPSocket::Listen(const std::string& address, int port, int backlog, 193 std::string* error_msg) { 194 if (socket_mode_ == CLIENT) { 195 *error_msg = kTCPSocketTypeInvalidError; 196 return net::ERR_NOT_IMPLEMENTED; 197 } 198 DCHECK(!socket_.get()); 199 socket_mode_ = SERVER; 200 201 scoped_ptr<net::IPEndPoint> bind_address(new net::IPEndPoint()); 202 if (!StringAndPortToIPEndPoint(address, port, bind_address.get())) 203 return net::ERR_INVALID_ARGUMENT; 204 205 if (!server_socket_.get()) { 206 server_socket_.reset(new net::TCPServerSocket(NULL, 207 net::NetLog::Source())); 208 } 209 int result = server_socket_->Listen(*bind_address, backlog); 210 if (result) 211 *error_msg = kSocketListenError; 212 return result; 213 } 214 215 void TCPSocket::Accept(const AcceptCompletionCallback &callback) { 216 if (socket_mode_ != SERVER || !server_socket_.get()) { 217 callback.Run(net::ERR_FAILED, NULL); 218 return; 219 } 220 221 // Limits to only 1 blocked accept call. 222 if (!accept_callback_.is_null()) { 223 callback.Run(net::ERR_FAILED, NULL); 224 return; 225 } 226 227 int result = server_socket_->Accept(&accept_socket_, base::Bind( 228 &TCPSocket::OnAccept, base::Unretained(this))); 229 if (result == net::ERR_IO_PENDING) { 230 accept_callback_ = callback; 231 } else if (result == net::OK) { 232 accept_callback_ = callback; 233 this->OnAccept(result); 234 } else { 235 callback.Run(result, NULL); 236 } 237 } 238 239 bool TCPSocket::IsConnected() { 240 RefreshConnectionStatus(); 241 return is_connected_; 242 } 243 244 bool TCPSocket::GetPeerAddress(net::IPEndPoint* address) { 245 if (!socket_.get()) 246 return false; 247 return !socket_->GetPeerAddress(address); 248 } 249 250 bool TCPSocket::GetLocalAddress(net::IPEndPoint* address) { 251 if (socket_.get()) { 252 return !socket_->GetLocalAddress(address); 253 } else if (server_socket_.get()) { 254 return !server_socket_->GetLocalAddress(address); 255 } else { 256 return false; 257 } 258 } 259 260 Socket::SocketType TCPSocket::GetSocketType() const { 261 return Socket::TYPE_TCP; 262 } 263 264 int TCPSocket::WriteImpl(net::IOBuffer* io_buffer, 265 int io_buffer_size, 266 const net::CompletionCallback& callback) { 267 if (socket_mode_ != CLIENT) 268 return net::ERR_FAILED; 269 else if (!socket_.get() || !IsConnected()) 270 return net::ERR_SOCKET_NOT_CONNECTED; 271 else 272 return socket_->Write(io_buffer, io_buffer_size, callback); 273 } 274 275 void TCPSocket::RefreshConnectionStatus() { 276 if (!is_connected_) return; 277 if (server_socket_) return; 278 if (!socket_->IsConnected()) { 279 Disconnect(); 280 } 281 } 282 283 void TCPSocket::OnConnectComplete(int result) { 284 DCHECK(!connect_callback_.is_null()); 285 DCHECK(!is_connected_); 286 is_connected_ = result == net::OK; 287 connect_callback_.Run(result); 288 connect_callback_.Reset(); 289 } 290 291 void TCPSocket::OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer, 292 int result) { 293 DCHECK(!read_callback_.is_null()); 294 read_callback_.Run(result, io_buffer); 295 read_callback_.Reset(); 296 } 297 298 void TCPSocket::OnAccept(int result) { 299 DCHECK(!accept_callback_.is_null()); 300 if (result == net::OK && accept_socket_.get()) { 301 accept_callback_.Run( 302 result, static_cast<net::TCPClientSocket*>(accept_socket_.release())); 303 } else { 304 accept_callback_.Run(result, NULL); 305 } 306 accept_callback_.Reset(); 307 } 308 309 ResumableTCPSocket::ResumableTCPSocket(const std::string& owner_extension_id) 310 : TCPSocket(owner_extension_id), 311 persistent_(false), 312 buffer_size_(0), 313 paused_(false) { 314 } 315 316 ResumableTCPSocket::ResumableTCPSocket(net::TCPClientSocket* tcp_client_socket, 317 const std::string& owner_extension_id, 318 bool is_connected) 319 : TCPSocket(tcp_client_socket, owner_extension_id, is_connected), 320 persistent_(false), 321 buffer_size_(0), 322 paused_(false) { 323 } 324 325 bool ResumableTCPSocket::IsPersistent() const { 326 return persistent(); 327 } 328 329 ResumableTCPServerSocket::ResumableTCPServerSocket( 330 const std::string& owner_extension_id) 331 : TCPSocket(owner_extension_id), 332 persistent_(false), 333 paused_(false) { 334 } 335 336 bool ResumableTCPServerSocket::IsPersistent() const { 337 return persistent(); 338 } 339 340 } // namespace extensions 341
