1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifdef HAVE_CONFIG_H 29 #include <config.h> 30 #endif 31 32 #include <errno.h> 33 #include "talk/base/basicdefs.h" 34 #include "talk/base/logging.h" 35 #include "talk/base/thread.h" 36 #ifdef FEATURE_ENABLE_SSL 37 #include "talk/base/ssladapter.h" 38 #endif 39 #include "xmppsocket.h" 40 41 #ifdef USE_SSLSTREAM 42 #include "talk/base/socketstream.h" 43 #ifdef FEATURE_ENABLE_SSL 44 #include "talk/base/sslstreamadapter.h" 45 #endif // FEATURE_ENABLE_SSL 46 #endif // USE_SSLSTREAM 47 48 XmppSocket::XmppSocket(bool tls) : tls_(tls) { 49 talk_base::Thread* pth = talk_base::Thread::Current(); 50 talk_base::AsyncSocket* socket = 51 pth->socketserver()->CreateAsyncSocket(SOCK_STREAM); 52 #ifndef USE_SSLSTREAM 53 #ifdef FEATURE_ENABLE_SSL 54 if (tls_) { 55 socket = talk_base::SSLAdapter::Create(socket); 56 } 57 #endif // FEATURE_ENABLE_SSL 58 cricket_socket_ = socket; 59 cricket_socket_->SignalReadEvent.connect(this, &XmppSocket::OnReadEvent); 60 cricket_socket_->SignalWriteEvent.connect(this, &XmppSocket::OnWriteEvent); 61 cricket_socket_->SignalConnectEvent.connect(this, 62 &XmppSocket::OnConnectEvent); 63 cricket_socket_->SignalCloseEvent.connect(this, &XmppSocket::OnCloseEvent); 64 #else // USE_SSLSTREAM 65 cricket_socket_ = socket; 66 stream_ = new talk_base::SocketStream(cricket_socket_); 67 #ifdef FEATURE_ENABLE_SSL 68 if (tls_) 69 stream_ = talk_base::SSLStreamAdapter::Create(stream_); 70 #endif // FEATURE_ENABLE_SSL 71 stream_->SignalEvent.connect(this, &XmppSocket::OnEvent); 72 #endif // USE_SSLSTREAM 73 74 state_ = buzz::AsyncSocket::STATE_CLOSED; 75 } 76 77 XmppSocket::~XmppSocket() { 78 Close(); 79 #ifndef USE_SSLSTREAM 80 delete cricket_socket_; 81 #else // USE_SSLSTREAM 82 delete stream_; 83 #endif // USE_SSLSTREAM 84 } 85 86 #ifndef USE_SSLSTREAM 87 void XmppSocket::OnReadEvent(talk_base::AsyncSocket * socket) { 88 SignalRead(); 89 } 90 91 void XmppSocket::OnWriteEvent(talk_base::AsyncSocket * socket) { 92 // Write bytes if there are any 93 while (buffer_.Length() != 0) { 94 int written = cricket_socket_->Send(buffer_.Data(), buffer_.Length()); 95 if (written > 0) { 96 buffer_.Shift(written); 97 continue; 98 } 99 if (!cricket_socket_->IsBlocking()) 100 LOG(LS_ERROR) << "Send error: " << cricket_socket_->GetError(); 101 return; 102 } 103 } 104 105 void XmppSocket::OnConnectEvent(talk_base::AsyncSocket * socket) { 106 #if defined(FEATURE_ENABLE_SSL) 107 if (state_ == buzz::AsyncSocket::STATE_TLS_CONNECTING) { 108 state_ = buzz::AsyncSocket::STATE_TLS_OPEN; 109 SignalSSLConnected(); 110 OnWriteEvent(cricket_socket_); 111 return; 112 } 113 #endif // !defined(FEATURE_ENABLE_SSL) 114 state_ = buzz::AsyncSocket::STATE_OPEN; 115 SignalConnected(); 116 } 117 118 void XmppSocket::OnCloseEvent(talk_base::AsyncSocket * socket, int error) { 119 SignalCloseEvent(error); 120 } 121 122 #else // USE_SSLSTREAM 123 124 void XmppSocket::OnEvent(talk_base::StreamInterface* stream, 125 int events, int err) { 126 if ((events & talk_base::SE_OPEN)) { 127 #if defined(FEATURE_ENABLE_SSL) 128 if (state_ == buzz::AsyncSocket::STATE_TLS_CONNECTING) { 129 state_ = buzz::AsyncSocket::STATE_TLS_OPEN; 130 SignalSSLConnected(); 131 events |= talk_base::SE_WRITE; 132 } else 133 #endif 134 { 135 state_ = buzz::AsyncSocket::STATE_OPEN; 136 SignalConnected(); 137 } 138 } 139 if ((events & talk_base::SE_READ)) 140 SignalRead(); 141 if ((events & talk_base::SE_WRITE)) { 142 // Write bytes if there are any 143 while (buffer_.Length() != 0) { 144 talk_base::StreamResult result; 145 size_t written; 146 int error; 147 result = stream_->Write(buffer_.Data(), buffer_.Length(), 148 &written, &error); 149 if (result == talk_base::SR_ERROR) { 150 LOG(LS_ERROR) << "Send error: " << error; 151 return; 152 } 153 if (result == talk_base::SR_BLOCK) 154 return; 155 ASSERT(result == talk_base::SR_SUCCESS); 156 ASSERT(written > 0); 157 buffer_.Shift(written); 158 } 159 } 160 if ((events & talk_base::SE_CLOSE)) 161 SignalCloseEvent(err); 162 } 163 #endif // USE_SSLSTREAM 164 165 buzz::AsyncSocket::State XmppSocket::state() { 166 return state_; 167 } 168 169 buzz::AsyncSocket::Error XmppSocket::error() { 170 return buzz::AsyncSocket::ERROR_NONE; 171 } 172 173 int XmppSocket::GetError() { 174 return 0; 175 } 176 177 bool XmppSocket::Connect(const talk_base::SocketAddress& addr) { 178 if (cricket_socket_->Connect(addr) < 0) { 179 return cricket_socket_->IsBlocking(); 180 } 181 return true; 182 } 183 184 bool XmppSocket::Read(char * data, size_t len, size_t* len_read) { 185 #ifndef USE_SSLSTREAM 186 int read = cricket_socket_->Recv(data, len); 187 if (read > 0) { 188 *len_read = (size_t)read; 189 return true; 190 } 191 #else // USE_SSLSTREAM 192 talk_base::StreamResult result = stream_->Read(data, len, len_read, NULL); 193 if (result == talk_base::SR_SUCCESS) 194 return true; 195 #endif // USE_SSLSTREAM 196 return false; 197 } 198 199 bool XmppSocket::Write(const char * data, size_t len) { 200 buffer_.WriteBytes(data, len); 201 #ifndef USE_SSLSTREAM 202 OnWriteEvent(cricket_socket_); 203 #else // USE_SSLSTREAM 204 OnEvent(stream_, talk_base::SE_WRITE, 0); 205 #endif // USE_SSLSTREAM 206 return true; 207 } 208 209 bool XmppSocket::Close() { 210 if (state_ != buzz::AsyncSocket::STATE_OPEN) 211 return false; 212 #ifndef USE_SSLSTREAM 213 if (cricket_socket_->Close() == 0) { 214 state_ = buzz::AsyncSocket::STATE_CLOSED; 215 SignalClosed(); 216 return true; 217 } 218 return false; 219 #else // USE_SSLSTREAM 220 state_ = buzz::AsyncSocket::STATE_CLOSED; 221 stream_->Close(); 222 SignalClosed(); 223 return true; 224 #endif // USE_SSLSTREAM 225 } 226 227 bool XmppSocket::StartTls(const std::string & domainname) { 228 #if defined(FEATURE_ENABLE_SSL) 229 if (!tls_) 230 return false; 231 #ifndef USE_SSLSTREAM 232 talk_base::SSLAdapter* ssl_adapter = 233 static_cast<talk_base::SSLAdapter *>(cricket_socket_); 234 ssl_adapter->set_ignore_bad_cert(true); 235 if (ssl_adapter->StartSSL(domainname.c_str(), false) != 0) 236 return false; 237 #else // USE_SSLSTREAM 238 talk_base::SSLStreamAdapter* ssl_stream = 239 static_cast<talk_base::SSLStreamAdapter *>(stream_); 240 ssl_stream->set_ignore_bad_cert(true); 241 if (ssl_stream->StartSSLWithServer(domainname.c_str()) != 0) 242 return false; 243 #endif // USE_SSLSTREAM 244 state_ = buzz::AsyncSocket::STATE_TLS_CONNECTING; 245 return true; 246 #else // !defined(FEATURE_ENABLE_SSL) 247 return false; 248 #endif // !defined(FEATURE_ENABLE_SSL) 249 } 250
