/*
Copyright ( c ) 2004 , 2010 , Oracle and / or its affiliates
Copyright ( c ) 2011 , Monty Program 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 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 (_AIX) || defined (__APPLE__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__linux__) || defined (__sun) || defined (_WIN32)
static my_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
#if defined (__APPLE__) || defined (__FreeBSD__) || defined (__OpenBSD__)
#ifdef __OpenBSD__
#include <netinet/in.h>
#include <net/if_arp.h>
#include <netinet/if_ether.h>
#else
#include <net/ethernet.h>
#endif
#include <sys/sysctl.h>
#include <net/route.h>
#include <net/if .h>
#include <net/if_dl.h>
my_bool my_gethwaddr(uchar *to)
{
size_t len;
uchar *buf, *next, *end, *addr;
struct if_msghdr *ifm;
struct sockaddr_dl *sdl;
int 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= (uchar *)LLADDR(sdl);
res= memcpy_and_test(to, addr, ETHER_ADDR_LEN);
}
}
err:
return res;
}
#elif defined (_AIX) || defined (__linux__) || defined (__sun)
#include <net/if .h>
#include <sys/ioctl.h>
#include <net/if_arp.h>
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#define ETHER_ADDR_LEN 6
my_bool my_gethwaddr(uchar *to)
{
int fd, res= 1 ;
#ifdef _AIX
struct ifhwaddr_req ifr[32 ];
#else
struct ifreq ifr[32 ];
#endif
struct ifconf ifc;
DBUG_ENTER("my_gethwaddr" );
ifc.ifc_req= (struct ifreq *) ifr;
ifc.ifc_len= sizeof (ifr);
fd = socket(AF_INET, SOCK_DGRAM, 0 );
if (fd < 0 )
{
DBUG_PRINT("error" , ("socket() call failed with %d" , errno));
goto err;
}
if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) >= 0 )
{
uint i;
for (i= 0 ; res && i < ifc.ifc_len / sizeof (ifr[0 ]); i++)
{
#if defined (_AIX) || defined (__linux__)
#if defined (__linux__)
#define HWADDR_DATA ifr[i].ifr_hwaddr.sa_data
#else
#define HWADDR_DATA ifr[i].ifr_hwaddr
#endif
if (ioctl(fd, SIOCGIFHWADDR, &ifr[i]) >= 0 )
res= memcpy_and_test(to, (uchar *)&HWADDR_DATA,
ETHER_ADDR_LEN);
#else
/*
A bug in OpenSolaris used to prevent non - root from getting a mac
address : { no url . Oracle killed the old OpenSolaris bug database }
Thus , we ' ll use an alternative method and extract the address from the
arp table .
*/
struct arpreq arpr;
arpr.arp_pa= ifr[i].ifr_addr;
if (ioctl(fd, SIOCGARP, (char *)&arpr) >= 0 )
res= memcpy_and_test(to, (uchar *)&arpr.arp_ha.sa_data,
ETHER_ADDR_LEN);
#endif
}
}
close(fd);
err:
DBUG_RETURN(res);
}
#elif defined (_WIN32)
#include <winsock2.h>
#include <iphlpapi.h>
#pragma comment(lib, "iphlpapi.lib" )
#define ETHER_ADDR_LEN 6
my_bool my_gethwaddr(uchar *to)
{
my_bool res= 1 ;
IP_ADAPTER_INFO *info= NULL;
ULONG info_len= 0 ;
if (GetAdaptersInfo(info, &info_len) != ERROR_BUFFER_OVERFLOW)
goto err;
info= (IP_ADAPTER_INFO *)alloca(info_len);
if (GetAdaptersInfo(info, &info_len) != NO_ERROR)
goto err;
while (info && res)
{
if (info->Type == MIB_IF_TYPE_ETHERNET &&
info->AddressLength == ETHER_ADDR_LEN)
{
res= memcpy_and_test(to, info->Address, ETHER_ADDR_LEN);
}
info = info->Next;
}
err:
return res;
}
#else /* unsupported system */
/* just fail */
my_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
Messung V0.5 in Prozent C=97 H=69 G=83
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-08)
¤
*© Formatika GbR, Deutschland