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| 1 // Copyright 2014 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 "components/devtools_bridge/socket_tunnel_server.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/location.h" | |
| 9 #include "components/devtools_bridge/abstract_data_channel.h" | |
| 10 #include "components/devtools_bridge/session_dependency_factory.h" | |
| 11 #include "components/devtools_bridge/socket_tunnel_connection.h" | |
| 12 #include "components/devtools_bridge/socket_tunnel_packet_handler.h" | |
| 13 #include "net/base/io_buffer.h" | |
| 14 #include "net/base/net_errors.h" | |
| 15 #include "net/socket/unix_domain_client_socket_posix.h" | |
| 16 | |
| 17 namespace devtools_bridge { | |
| 18 | |
| 19 class SocketTunnelServer::Connection : public SocketTunnelConnection { | |
| 20 public: | |
| 21 class Delegate { | |
| 22 public: | |
| 23 virtual void RemoveConnection(int index) = 0; | |
| 24 virtual void SendPacket( | |
| 25 const void* data, size_t length) = 0; | |
| 26 }; | |
| 27 | |
| 28 Connection(Delegate* delegate, int index, const std::string& socket_name) | |
| 29 : SocketTunnelConnection(index), | |
| 30 delegate_(delegate), | |
| 31 socket_(socket_name, true) { | |
| 32 } | |
| 33 | |
| 34 void Connect() { | |
| 35 int result = socket()->Connect(base::Bind( | |
| 36 &Connection::OnConnectionComplete, base::Unretained(this))); | |
| 37 if (result != net::ERR_IO_PENDING) | |
| 38 OnConnectionComplete(result); | |
| 39 } | |
| 40 | |
| 41 void ClosedByClient() { | |
| 42 if (socket()->IsConnected()) { | |
| 43 socket()->Disconnect(); | |
| 44 SendControlPacket(SERVER_CLOSE); | |
| 45 } | |
| 46 delegate_->RemoveConnection(index_); | |
| 47 } | |
| 48 | |
| 49 protected: | |
| 50 net::StreamSocket* socket() override { | |
| 51 return &socket_; | |
| 52 } | |
| 53 | |
| 54 void OnDataPacketRead(const void* data, size_t length) override { | |
| 55 delegate_->SendPacket(data, length); | |
| 56 ReadNextChunk(); | |
| 57 } | |
| 58 | |
| 59 void OnReadError(int error) override { | |
| 60 socket()->Disconnect(); | |
| 61 SendControlPacket(SERVER_CLOSE); | |
| 62 delegate_->RemoveConnection(index_); | |
| 63 delegate_ = NULL; | |
| 64 } | |
| 65 | |
| 66 private: | |
| 67 void OnConnectionComplete(int result) { | |
| 68 if (result == net::OK) { | |
| 69 SendControlPacket(SERVER_OPEN_ACK); | |
| 70 ReadNextChunk(); | |
| 71 } else { | |
| 72 SendControlPacket(SERVER_CLOSE); | |
| 73 delegate_->RemoveConnection(index_); | |
| 74 delegate_ = NULL; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 void SendControlPacket(ServerOpCode op_code) { | |
| 79 char buffer[kControlPacketSizeBytes]; | |
| 80 BuildControlPacket(buffer, op_code); | |
| 81 delegate_->SendPacket(buffer, kControlPacketSizeBytes); | |
| 82 } | |
| 83 | |
| 84 Delegate* delegate_; | |
| 85 net::UnixDomainClientSocket socket_; | |
| 86 }; | |
| 87 | |
| 88 /** | |
| 89 * Lives on the IO thread. | |
| 90 */ | |
| 91 class SocketTunnelServer::ConnectionController | |
| 92 : private Connection::Delegate { | |
| 93 public: | |
| 94 ConnectionController( | |
| 95 scoped_refptr<base::TaskRunner> io_task_runner, | |
| 96 scoped_refptr<AbstractDataChannel::Proxy> data_channel, | |
| 97 const std::string& socket_name) | |
| 98 : io_task_runner_(io_task_runner), | |
| 99 data_channel_(data_channel), | |
| 100 socket_name_(socket_name) { | |
| 101 DCHECK(data_channel_.get()); | |
| 102 } | |
| 103 | |
| 104 void HandleControlPacket(int connection_index, int op_code) { | |
| 105 DCHECK(connection_index < kMaxConnectionCount); | |
| 106 switch (op_code) { | |
| 107 case SocketTunnelConnection::CLIENT_OPEN: | |
| 108 if (connections_[connection_index].get() != NULL) { | |
| 109 DLOG(ERROR) << "Opening connection which already open: " | |
| 110 << connection_index; | |
| 111 HandleProtocolError(); | |
| 112 return; | |
| 113 } | |
| 114 connections_[connection_index].reset( | |
| 115 new Connection(this, connection_index, socket_name_)); | |
| 116 connections_[connection_index]->Connect(); | |
| 117 break; | |
| 118 | |
| 119 case SocketTunnelConnection::CLIENT_CLOSE: | |
| 120 if (connections_[connection_index].get() == NULL) { | |
| 121 // Ignore. Client may close the connection before received | |
| 122 // notification from the server. | |
| 123 return; | |
| 124 } | |
| 125 connections_[connection_index]->ClosedByClient(); | |
| 126 break; | |
| 127 | |
| 128 default: | |
| 129 DLOG(ERROR) << "Invalid op_code: " << op_code; | |
| 130 HandleProtocolError(); | |
| 131 return; | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 void HandleDataPacket(int connection_index, | |
| 136 scoped_refptr<net::IOBufferWithSize> packet) { | |
| 137 Connection* connection = connections_[connection_index].get(); | |
| 138 if (connection != NULL) | |
| 139 connection->Write(packet); | |
| 140 } | |
| 141 | |
| 142 void HandleProtocolError() { | |
| 143 data_channel_->Close(); | |
| 144 } | |
| 145 | |
| 146 void CloseAllConnections() { | |
| 147 for (int i = 0; i < kMaxConnectionCount; i++) { | |
| 148 connections_[i].reset(); | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 private: | |
| 153 static void DeleteConnectionImpl(Connection*) {} | |
| 154 | |
| 155 // Connection::Delegate implementation | |
| 156 void RemoveConnection(int connection_index) override { | |
| 157 // Remove immediately, delete later to preserve this of the caller. | |
| 158 Connection* connection = connections_[connection_index].release(); | |
| 159 io_task_runner_->PostTask( | |
| 160 FROM_HERE, base::Bind(&ConnectionController::DeleteConnectionImpl, | |
| 161 base::Owned(connection))); | |
| 162 } | |
| 163 | |
| 164 void SendPacket(const void* data, size_t length) override { | |
| 165 data_channel_->SendBinaryMessage(data, length); | |
| 166 } | |
| 167 | |
| 168 static const int kMaxConnectionCount = | |
| 169 SocketTunnelConnection::kMaxConnectionCount; | |
| 170 | |
| 171 scoped_refptr<base::TaskRunner> io_task_runner_; | |
| 172 scoped_refptr<AbstractDataChannel::Proxy> data_channel_; | |
| 173 scoped_ptr<Connection> connections_[kMaxConnectionCount]; | |
| 174 const std::string socket_name_; | |
| 175 }; | |
| 176 | |
| 177 class SocketTunnelServer::DataChannelObserver | |
| 178 : public AbstractDataChannel::Observer, | |
| 179 private SocketTunnelPacketHandler { | |
| 180 public: | |
| 181 DataChannelObserver(scoped_refptr<base::TaskRunner> io_task_runner, | |
| 182 scoped_ptr<ConnectionController> controller) | |
| 183 : io_task_runner_(io_task_runner), | |
| 184 controller_(controller.Pass()) { | |
| 185 } | |
| 186 | |
| 187 ~DataChannelObserver() override { | |
| 188 // Deleting on IO thread allows post tasks with base::Unretained | |
| 189 // because all of them will be processed before deletion. | |
| 190 io_task_runner_->PostTask( | |
| 191 FROM_HERE, base::Bind(&DataChannelObserver::DeleteControllerOnIOThread, | |
| 192 base::Passed(&controller_))); | |
| 193 } | |
| 194 | |
| 195 void OnOpen() override { | |
| 196 // Nothing to do. Activity could only be initiated by a control packet. | |
| 197 } | |
| 198 | |
| 199 void OnClose() override { | |
| 200 io_task_runner_->PostTask( | |
| 201 FROM_HERE, base::Bind( | |
| 202 &ConnectionController::CloseAllConnections, | |
| 203 base::Unretained(controller_.get()))); | |
| 204 } | |
| 205 | |
| 206 void OnMessage(const void* data, size_t length) override { | |
| 207 DecodePacket(data, length); | |
| 208 } | |
| 209 | |
| 210 private: | |
| 211 static void DeleteControllerOnIOThread( | |
| 212 scoped_ptr<ConnectionController> controller) {} | |
| 213 | |
| 214 // SocketTunnelPacketHandler implementation. | |
| 215 | |
| 216 void HandleControlPacket(int connection_index, int op_code) override { | |
| 217 io_task_runner_->PostTask( | |
| 218 FROM_HERE, base::Bind( | |
| 219 &ConnectionController::HandleControlPacket, | |
| 220 base::Unretained(controller_.get()), | |
| 221 connection_index, | |
| 222 op_code)); | |
| 223 } | |
| 224 | |
| 225 void HandleDataPacket(int connection_index, | |
| 226 scoped_refptr<net::IOBufferWithSize> data) override { | |
| 227 io_task_runner_->PostTask( | |
| 228 FROM_HERE, base::Bind( | |
| 229 &ConnectionController::HandleDataPacket, | |
| 230 base::Unretained(controller_.get()), | |
| 231 connection_index, | |
| 232 data)); | |
| 233 } | |
| 234 | |
| 235 void HandleProtocolError() override { | |
| 236 io_task_runner_->PostTask( | |
| 237 FROM_HERE, base::Bind( | |
| 238 &ConnectionController::HandleProtocolError, | |
| 239 base::Unretained(controller_.get()))); | |
| 240 } | |
| 241 | |
| 242 const scoped_refptr<base::TaskRunner> io_task_runner_; | |
| 243 scoped_ptr<ConnectionController> controller_; | |
| 244 }; | |
| 245 | |
| 246 SocketTunnelServer::SocketTunnelServer(SessionDependencyFactory* factory, | |
| 247 AbstractDataChannel* data_channel, | |
| 248 const std::string& socket_name) | |
| 249 : data_channel_(data_channel) { | |
| 250 scoped_ptr<ConnectionController> controller( | |
| 251 new ConnectionController(factory->io_thread_task_runner(), | |
| 252 data_channel->proxy(), | |
| 253 socket_name)); | |
| 254 | |
| 255 scoped_ptr<DataChannelObserver> data_channel_observer( | |
| 256 new DataChannelObserver(factory->io_thread_task_runner(), | |
| 257 controller.Pass())); | |
| 258 | |
| 259 data_channel_->RegisterObserver(data_channel_observer.Pass()); | |
| 260 } | |
| 261 | |
| 262 SocketTunnelServer::~SocketTunnelServer() { | |
| 263 data_channel_->UnregisterObserver(); | |
| 264 } | |
| 265 | |
| 266 } // namespace devtools_bridge | |
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Chromium Code Reviews
Issue 1142463003:
Remove devtools_bridge component (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master