/*
** Copyright (C) 2006- Sami Kerola <kerolasa@iki.fi>
**  
** This program 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 2 of the License, or
** (at your option) any later version.
** 
** This program 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 this program; if not, write to the Free Software 
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>

#include "dhcpd-pools.h"

/* Clean up data */
int
prepare_data (void)
{
  unsigned long int i, j, k;

  /* Sort leases */
  qsort (leases, (size_t) num_leases, sizeof (long int), &intcomp);

  /* Get rid of dublicates */
  for (k = j = i = 0; i < num_leases; i++)
    {
      if (j != leases[i])
	{
	  leases[k] = leases[i];
	  j = leases[i];
	  k++;
	}
    }
  num_leases = k;

  /* Sort ranges */
  qsort (ranges, (size_t) num_ranges, sizeof (struct range_t), &rangecomp);

  return 0;
}

/* Join leases and ranges into couter structs */
int
do_counting (void)
{
  struct range_t *range_p;
  unsigned int i, block_size;

  range_p = ranges;

  for (i = 0; i < num_leases; i++)
    {
      /* IP with in range */
      if (range_p->first_ip < leases[i] && range_p->last_ip > leases[i])
	{
	  range_p->count++;
	  if (range_p->shared_net)
	    {
	      range_p->shared_net->used++;
	    }
	  shared_networks->used++;
	}
      /* IP out of range */
      if (range_p->last_ip < leases[i])
	{
	  range_p++;
	  /* Break loop before trying to access memorory that is
	   * not allocated. */
	  if (range_p - ranges > num_ranges)
	    {
	      break;
	    }
	  block_size = range_p->last_ip - range_p->first_ip - 1;
	  if (range_p->shared_net)
	    {
	      range_p->shared_net->available += block_size;
	    }
	  shared_networks->available += block_size;
	  i--;
	}

    }
  return 0;
}