wiselib.testing/algorithms/privacy/privacy_message.h

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/***************************************************************************
 ** This file is part of the generic algorithm library Wiselib.           **
 ** Copyright (C) 2008,2009 by the Wisebed (www.wisebed.eu) project.      **
 **                                                                       **
 ** The Wiselib is free software: you can redistribute it and/or modify   **
 ** it under the terms of the GNU Lesser General Public License as        **
 ** published by the Free Software Foundation, either version 3 of the    **
 ** License, or (at your option) any later version.                       **
 **                                                                       **
 ** The Wiselib is distributed in the hope that it will be useful,        **
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of        **
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         **
 ** GNU Lesser General Public License for more details.                   **
 **                                                                       **
 ** You should have received a copy of the GNU Lesser General Public      **
 ** License along with the Wiselib.                                       **
 ** If not, see <http://www.gnu.org/licenses/>.                           **
 ***************************************************************************/
#ifndef __PRIVACY_MSG_H__
#define __PRIVACY_MSG_H__

namespace wiselib
{
   template<   typename Os_P,
            typename Radio_P>
   class PrivacyMessageType
   {
   public:
      typedef Os_P Os;
      typedef Radio_P Radio;
      typedef typename Radio::block_data_t block_data_t;
      typedef typename Radio::size_t size_t;
      typedef typename Radio::message_id_t message_id_t;
      // --------------------------------------------------------------------
      inline PrivacyMessageType()
      {
         set_msg_id( 0 );
         size_t len = 0;
         write<Os, block_data_t, size_t>( buff + PAYLOAD_LEN_POS, len );
      }
      // --------------------------------------------------------------------
      inline message_id_t msg_id()
      {
         return read<Os, block_data_t, message_id_t>( buff + MSG_ID_POS );
      };
      // --------------------------------------------------------------------
      inline void set_msg_id( message_id_t msg_id )
      {
         write<Os, block_data_t, message_id_t>( buff + MSG_ID_POS, msg_id );
      }
      // --------------------------------------------------------------------
      inline uint16_t request_id()
      {
         return read<Os, block_data_t, uint16_t>( buff + REQ_ID_POS );
      }
      // --------------------------------------------------------------------
      inline void set_request_id( uint16_t req_id )
      {
         write<Os, block_data_t, uint16_t>( buff + REQ_ID_POS, req_id );
      }
      // --------------------------------------------------------------------
      inline size_t payload_size()
      {
         return read<Os, block_data_t, size_t>( buff + PAYLOAD_LEN_POS );
      }
      // --------------------------------------------------------------------
      inline block_data_t* payload()
      { 
         return buff + PAYLOAD_POS;
      }
      // --------------------------------------------------------------------
      inline void set_payload( size_t len, block_data_t *buf )
      {
         write<Os, block_data_t, size_t>( buff + PAYLOAD_LEN_POS, len );
         memcpy( buff + PAYLOAD_POS, buf, len );
      }
      // --------------------------------------------------------------------
      inline size_t buffer_size()
      {
         return PAYLOAD_POS + payload_size();
      }
      // --------------------------------------------------------------------
      inline block_data_t* buffer()
      {
         return buff;
      }
      // --------------------------------------------------------------------
   private:
      enum data_positions
      {
         MSG_ID_POS = 0,
         REQ_ID_POS = MSG_ID_POS + sizeof( message_id_t),
         PAYLOAD_LEN_POS = REQ_ID_POS + sizeof( uint16_t ),
         PAYLOAD_POS = PAYLOAD_LEN_POS + sizeof( size_t )
      };
      block_data_t buff[Radio::MAX_MESSAGE_LENGTH];
   };
}
#endif