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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 _XMPPSOCKET_H_
29 #define _XMPPSOCKET_H_
30 
31 #include "talk/base/asyncsocket.h"
32 #include "talk/base/bytebuffer.h"
33 #include "talk/base/sigslot.h"
34 #include "talk/xmpp/asyncsocket.h"
35 
36 // The below define selects the SSLStreamAdapter implementation for
37 // SSL, as opposed to the SSLAdapter socket adapter.
38 // #define USE_SSLSTREAM
39 
40 namespace talk_base {
41   class StreamInterface;
42 };
43 extern talk_base::AsyncSocket* cricket_socket_;
44 
45 class XmppSocket : public buzz::AsyncSocket, public sigslot::has_slots<> {
46 public:
47   XmppSocket(bool tls);
48   ~XmppSocket();
49 
50   virtual buzz::AsyncSocket::State state();
51   virtual buzz::AsyncSocket::Error error();
52   virtual int GetError();
53 
54   virtual bool Connect(const talk_base::SocketAddress& addr);
55   virtual bool Read(char * data, size_t len, size_t* len_read);
56   virtual bool Write(const char * data, size_t len);
57   virtual bool Close();
58   virtual bool StartTls(const std::string & domainname);
59 
60   sigslot::signal1<int> SignalCloseEvent;
61 
62 private:
63 #ifndef USE_SSLSTREAM
64   void OnReadEvent(talk_base::AsyncSocket * socket);
65   void OnWriteEvent(talk_base::AsyncSocket * socket);
66   void OnConnectEvent(talk_base::AsyncSocket * socket);
67   void OnCloseEvent(talk_base::AsyncSocket * socket, int error);
68 #else  // USE_SSLSTREAM
69   void OnEvent(talk_base::StreamInterface* stream, int events, int err);
70 #endif  // USE_SSLSTREAM
71 
72   talk_base::AsyncSocket * cricket_socket_;
73 #ifdef USE_SSLSTREAM
74   talk_base::StreamInterface *stream_;
75 #endif  // USE_SSLSTREAM
76   buzz::AsyncSocket::State state_;
77   talk_base::ByteBuffer buffer_;
78   bool tls_;
79 };
80 
81 #endif // _XMPPSOCKET_H_
82