text: /* FreeTDS - Library of routines accessing Sybase and Microsoft databases
   * Copyright (C) 1998-2002  Brian Bruns
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Library General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library 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
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public
   * License along with this library; if not, write to the
   * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   * Boston, MA 02111-1307, USA.
   */
  
  #if HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include <stdarg.h>
  #include <stdio.h>
  
  #if HAVE_STDLIB_H
  #include <stdlib.h>
  #endif /* HAVE_STDLIB_H */
  
  #if HAVE_STRING_H
  #include <string.h>
  #endif /* HAVE_STRING_H */
  
  #include "tds.h"
  
  #ifdef __linux__
  #include <sys/ioctl.h>
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <netinet/in.h>
  #include <linux/if.h>
  #endif
  
  /* TODO get real MAC */
  void
  tds_getmac(int s, unsigned char mac[6])
  {
  /* implementation for Linux */
  #ifdef __linux__
  	struct ifreq ifr;
  	struct ifreq *IFR;
  	struct ifconf ifc;
  	char buf[1024];
  	int i;
  
  	memset(mac, 0, 6);
  
  	ifc.ifc_len = sizeof(buf);
  	ifc.ifc_buf = buf;
  	ioctl(s, SIOCGIFCONF, &ifc);
  
  	IFR = ifc.ifc_req;
  	for (i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; ++IFR) {
  
  		strcpy(ifr.ifr_name, IFR->ifr_name);
  		if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
  			if (!(ifr.ifr_flags & IFF_LOOPBACK)) {
  				if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
  					memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
  					break;
  				}
  			}
  		}
  	}
  #else /* !defined(__linux__) */
  	memset(mac, 0, 6);
  #endif
  }
  