henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 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 | #ifndef TALK_BASE_SCHANNELADAPTER_H__ |
| 29 | #define TALK_BASE_SCHANNELADAPTER_H__ |
| 30 | |
| 31 | #include <string> |
| 32 | #include "talk/base/ssladapter.h" |
| 33 | #include "talk/base/messagequeue.h" |
| 34 | struct _SecBufferDesc; |
| 35 | |
| 36 | namespace talk_base { |
| 37 | |
| 38 | /////////////////////////////////////////////////////////////////////////////// |
| 39 | |
| 40 | class SChannelAdapter : public SSLAdapter, public MessageHandler { |
| 41 | public: |
| 42 | SChannelAdapter(AsyncSocket* socket); |
| 43 | virtual ~SChannelAdapter(); |
| 44 | |
| 45 | virtual int StartSSL(const char* hostname, bool restartable); |
| 46 | virtual int Send(const void* pv, size_t cb); |
| 47 | virtual int Recv(void* pv, size_t cb); |
| 48 | virtual int Close(); |
| 49 | |
| 50 | // Note that the socket returns ST_CONNECTING while SSL is being negotiated. |
| 51 | virtual ConnState GetState() const; |
| 52 | |
| 53 | protected: |
| 54 | enum SSLState { |
| 55 | SSL_NONE, SSL_WAIT, SSL_CONNECTING, SSL_CONNECTED, SSL_ERROR |
| 56 | }; |
| 57 | struct SSLImpl; |
| 58 | |
| 59 | virtual void OnConnectEvent(AsyncSocket* socket); |
| 60 | virtual void OnReadEvent(AsyncSocket* socket); |
| 61 | virtual void OnWriteEvent(AsyncSocket* socket); |
| 62 | virtual void OnCloseEvent(AsyncSocket* socket, int err); |
| 63 | virtual void OnMessage(Message* pmsg); |
| 64 | |
| 65 | int BeginSSL(); |
| 66 | int ContinueSSL(); |
| 67 | int ProcessContext(long int status, _SecBufferDesc* sbd_in, |
| 68 | _SecBufferDesc* sbd_out); |
| 69 | int DecryptData(); |
| 70 | |
| 71 | int Read(); |
| 72 | int Flush(); |
| 73 | void Error(const char* context, int err, bool signal = true); |
| 74 | void Cleanup(); |
| 75 | |
| 76 | void PostEvent(); |
| 77 | |
| 78 | private: |
| 79 | SSLState state_; |
| 80 | std::string ssl_host_name_; |
| 81 | // If true, socket will retain SSL configuration after Close. |
| 82 | bool restartable_; |
| 83 | // If true, we are delaying signalling close until all data is read. |
| 84 | bool signal_close_; |
| 85 | // If true, we are waiting to be woken up to signal readability or closure. |
| 86 | bool message_pending_; |
| 87 | SSLImpl* impl_; |
| 88 | }; |
| 89 | |
| 90 | ///////////////////////////////////////////////////////////////////////////// |
| 91 | |
| 92 | } // namespace talk_base |
| 93 | |
| 94 | #endif // TALK_BASE_SCHANNELADAPTER_H__ |