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

#include "scancusts.h"
#include "iptable.h"

cust_t *getcust(void )
{
 static int fileopen=0;
 static int linenumber=0;
 static FILE *fd;
 static cust_t cust;

 unsigned int i1,i2,i3,i4,netmask;
 char part1[255],part2[255];
// char customer[255];
 int items1,items2;

 if (!fileopen)
 {
   fd=fopen("custs","r");
   if (!fd)
   {
     perror("Opening custs file");
     exit(1);
   }
   fileopen=1;
 }

 if (!feof(fd))
 { 
    bzero(&cust,sizeof( cust_t ) );
    i1=i2=i3=i4=0;
    netmask=32; /* Defailt if no Netmask */

    items1=fscanf(fd,"%s%s\n",part1,part2);
    linenumber++;
    items2=sscanf(part1,"%u.%u.%u.%u/%u\n",&i1,&i2,&i3,&i4,&netmask);

    if ((items2 != 4) &&(items2 != 5)) 
    {
      printf ("Bad Statement in Line %d : %s %s\n",linenumber,part1, part2); 
      exit(1);
    }
    else 
    {
      cust.network=(i1<<24)+(i2<<16)+(i3<<8)+i4;
      cust.netmask=netmask;
      strncpy(cust.name,part2,200);
    }
    return (&cust);
  }
  else
  {
     fclose(fd);
     return 0;
  }
}

#ifdef DEBUG_MAIN
int main()
{
  cust_t *cust;

  while((cust=getcust()))
  {
    printf("Customer:%s\n",cust->name);
    printf("IP:%08lx ",cust->network );
    printf(" %u\n" ,cust->netmask);
  }
  return 0;
}

#endif