addr.c

/* Copyright 2008 Michael Marsh, University of Maryland.
 *
 * This file is part of pydtn.
 *
 * pydtn is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * pydtn 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with pydtn.  If not, see <http://www.gnu.org/licenses/>.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of the University
 * of Maryland.
 *
 * pydtn extends and embeds the Python interpreter, which is
 * Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
 * and is released under the PSF License Agreement.
 *
 * RANLUX random number generation uses the Boost library,
 * Copyright 1994-2006 by various authors (details in individual files),
 * which is released under the Boost Software License, Version 1.0.
 */

#include "aodv.h"
#include <string.h>

char
aodv_cmp_addr( const aodv_addr_t* a, const aodv_addr_t* b )
{
   unsigned int i;

   if ( NULL == a )
   {
      if ( NULL == b )
      {
         return 0;
      }
      return -1;
   }
   if ( NULL == b )
   {
      return 1;
   }

   for ( i = 0 ; i < a->length ; ++i )
   {
      if ( i >= b->length )
      {
         return 1;
      }
      if ( a->data[i] < b->data[i] )
      {
         return -1;
      }
      if ( a->data[i] > b->data[i] )
      {
         return 1;
      }
   }

   if ( a->length < b->length )
   {
      return -1;
   }
   return 0;
}

void
set_aodv_addr( aodv_addr_t* dest, const aodv_addr_t* src )
{
   if ( NULL == dest ) return;
   if ( NULL == src ) return;
   if ( NULL != dest->data )
   {
      free(dest->data);
      dest->length = 0;
   }

   dest->data = calloc( src->length, sizeof(unsigned char) );
   if ( NULL == dest->data ) return;
   dest->length = src->length;
   memcpy( dest->data, src->data, dest->length );
}

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