~drizzle-trunk/drizzle/development

/* Copyright (C) 2004 MySQL AB

   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; version 2 of the License.

   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 */

/* get hardware address for an interface */

/* if there are many available, any non-zero one can be used */

#include "mysys_priv.h"

#include <m_string.h>

#ifndef MAIN

#if defined(__FreeBSD__) || defined(__linux__)

static bool memcpy_and_test(uchar *to, uchar *from, uint len)

{

  uint i, res=1;

  for (i=0; i < len; i++)

    if ((*to++= *from++))

      res=0;

  return res;

}

#endif   /* FreeBSD || linux */

#ifdef __FreeBSD__

#include <net/ethernet.h>

#include <sys/sysctl.h>

#include <net/route.h>

#include <net/if.h>

#include <net/if_dl.h>

bool my_gethwaddr(uchar *to)

{

  size_t len;

  uchar  *buf, *next, *end, *addr;

  struct if_msghdr *ifm;

  struct sockaddr_dl *sdl;

  int i, res=1, mib[6]={CTL_NET, AF_ROUTE, 0, AF_LINK, NET_RT_IFLIST, 0};

  if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1)

    goto err;

  if (!(buf = alloca(len)))

    goto err;

  if (sysctl(mib, 6, buf, &len, NULL, 0) < 0)

    goto err;

  end = buf + len;

  for (next = buf ; res && next < end ; next += ifm->ifm_msglen)

  {

    ifm = (struct if_msghdr *)next;

    if (ifm->ifm_type == RTM_IFINFO)

    {

      sdl = (struct sockaddr_dl *)(ifm + 1);

      addr=LLADDR(sdl);

      res=memcpy_and_test(to, addr, ETHER_ADDR_LEN);

    }

  }

err:

  return res;

}

#elif __linux__

#include <net/if.h>

#include <sys/ioctl.h>

#include <net/ethernet.h>

bool my_gethwaddr(uchar *to)

{

  int fd, res=1;

  struct ifreq ifr;

  fd = socket(AF_INET, SOCK_DGRAM, 0);

  if (fd < 0)

    goto err;

  bzero(&ifr, sizeof(ifr));

  strnmov(ifr.ifr_name, "eth0", sizeof(ifr.ifr_name) - 1);

  do {

    if (ioctl(fd, SIOCGIFHWADDR, &ifr) >= 0)

      res=memcpy_and_test(to, (uchar *)&ifr.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);

  } while (res && (errno == 0 || errno == ENODEV) && ifr.ifr_name[3]++ < '6');

  close(fd);

err:

  return res;

}

#else   /* FreeBSD elif linux */

/* just fail */

bool my_gethwaddr(uchar *to __attribute__((unused)))

{

  return 1;

}

#endif

#else /* MAIN */

int main(int argc __attribute__((unused)),char **argv)

{

  uchar mac[6];

  uint i;

  MY_INIT(argv[0]);

  if (my_gethwaddr(mac))

  {

    printf("my_gethwaddr failed with errno %d\n", errno);

    exit(1);

  }

  for (i=0; i < sizeof(mac); i++)

  {

    if (i) printf(":");

    printf("%02x", mac[i]);

  }

  printf("\n");

  return 0;

}

#endif