/* dyndnsupdate --- interface.c --- Mar 27 2002
 * Copyright (c) 2002 Fredrik "xzabite" Haglund (xzabite@xzabite.org)
 * http://xzabite.org
 *
 * 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.
 */

#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <net/if.h>
#if defined(SOLARIS)
#include <sys/sockio.h>
#endif

#include "interface.h"

char *ipcheckif(char *interface)
{
   char *ip_addr;
   struct ifreq ifr;
   struct sockaddr_in *skt;
   
   if((eth_s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
     {
        perror("socket");
        exit(0);
     }
   
   strcpy(ifr.ifr_name, interface);
   
   if(ioctl(eth_s, SIOCGIFADDR, &ifr) < 0);

   skt = (struct sockaddr_in*)&ifr.ifr_addr;
   
   if(skt->sin_addr.s_addr)
     ip_addr =  inet_ntoa(skt->sin_addr);
   else
    ip_addr = "Unknown";
   
   return ip_addr;
}
