message_content.h

00001 
00002 /***************************************************************************
00003  *  message_content.h - Fawkes network message content
00004  *
00005  *  Created: Fri Jun 01 13:29:09 2007
00006  *  Copyright  2006-2007  Tim Niemueller [www.niemueller.de]
00007  *
00008  ****************************************************************************/
00009 
00010 /*  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version. A runtime exception applies to
00014  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00015  *
00016  *  This program is distributed in the hope that it will be useful,
00017  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  *  GNU Library General Public License for more details.
00020  *
00021  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00022  */
00023 
00024 #ifndef __NETCOMM_FAWKES_MESSAGE_CONTENT_H_
00025 #define __NETCOMM_FAWKES_MESSAGE_CONTENT_H_
00026 
00027 #include <sys/types.h>
00028 #include <cstddef>
00029 
00030 namespace fawkes {
00031 
00032 class FawkesNetworkMessageContent
00033 {
00034  public:
00035   FawkesNetworkMessageContent();
00036   virtual ~FawkesNetworkMessageContent();
00037 
00038   virtual void   serialize() = 0;
00039   virtual void * payload();
00040   virtual size_t payload_size();
00041 
00042  protected:
00043   void copy_payload(size_t offset, const void *buf, size_t len);
00044 
00045  protected:
00046   /** Pointer to payload. */
00047   void *  _payload;
00048   /** Payloda size. */
00049   size_t  _payload_size;
00050 };
00051 
00052 } // end namespace fawkes
00053 
00054 #endif