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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 TALK_P2P_BASE_P2PTRANSPORT_H_
     29 #define TALK_P2P_BASE_P2PTRANSPORT_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 #include "talk/p2p/base/transport.h"
     34 
     35 namespace cricket {
     36 
     37 class P2PTransport : public Transport {
     38  public:
     39   P2PTransport(talk_base::Thread* signaling_thread,
     40                talk_base::Thread* worker_thread,
     41                const std::string& content_name,
     42                PortAllocator* allocator);
     43   virtual ~P2PTransport();
     44 
     45  protected:
     46   // Creates and destroys P2PTransportChannel.
     47   virtual TransportChannelImpl* CreateTransportChannel(int component);
     48   virtual void DestroyTransportChannel(TransportChannelImpl* channel);
     49 
     50   friend class P2PTransportChannel;
     51 
     52   DISALLOW_EVIL_CONSTRUCTORS(P2PTransport);
     53 };
     54 
     55 class P2PTransportParser : public TransportParser {
     56  public:
     57   P2PTransportParser() {}
     58   // Translator may be null, in which case ParseCandidates should
     59   // return false if there are candidates to parse.  We can't not call
     60   // ParseCandidates because there's no way to know ahead of time if
     61   // there are candidates or not.
     62 
     63   // Jingle-specific functions; can be used with either ICE, GICE, or HYBRID.
     64   virtual bool ParseTransportDescription(const buzz::XmlElement* elem,
     65                                          const CandidateTranslator* translator,
     66                                          TransportDescription* desc,
     67                                          ParseError* error);
     68   virtual bool WriteTransportDescription(const TransportDescription& desc,
     69                                          const CandidateTranslator* translator,
     70                                          buzz::XmlElement** elem,
     71                                          WriteError* error);
     72 
     73   // Legacy Gingle functions; only can be used with GICE.
     74   virtual bool ParseGingleCandidate(const buzz::XmlElement* elem,
     75                                     const CandidateTranslator* translator,
     76                                     Candidate* candidate,
     77                                     ParseError* error);
     78   virtual bool WriteGingleCandidate(const Candidate& candidate,
     79                                     const CandidateTranslator* translator,
     80                                     buzz::XmlElement** elem,
     81                                     WriteError* error);
     82 
     83  private:
     84   bool ParseCandidate(TransportProtocol proto,
     85                       const buzz::XmlElement* elem,
     86                       const CandidateTranslator* translator,
     87                       Candidate* candidate,
     88                       ParseError* error);
     89   bool WriteCandidate(TransportProtocol proto,
     90                       const Candidate& candidate,
     91                       const CandidateTranslator* translator,
     92                       buzz::XmlElement* elem,
     93                       WriteError* error);
     94   bool VerifyUsernameFormat(TransportProtocol proto,
     95                             const std::string& username,
     96                             ParseError* error);
     97 
     98   DISALLOW_EVIL_CONSTRUCTORS(P2PTransportParser);
     99 };
    100 
    101 }  // namespace cricket
    102 
    103 #endif  // TALK_P2P_BASE_P2PTRANSPORT_H_
    104