在ubuntu上，用C取得所有網卡裝置名稱範例程式，試了這個範例，在某段會卡住，基本上網卡名稱是拿的到的，目前夠用，就先留下來，以後需要再拿來改。
#include <net/if.h>
#include <sys/ioctl.h>
#define MAXINTERFACES 16
int main (argc, argv)
register int argc;
register char *argv[];
{
register int fd, intrface, retn = 0;
struct ifreq buf[MAXINTERFACES];
struct arpreq arp;
struct ifconf ifc;
if ((fd = socket (AF_INET, SOCK_DGRAM, 0)) >= 0) {
ifc.ifc_len = sizeof buf;
ifc.ifc_buf = (caddr_t) buf;
if (!ioctl (fd, SIOCGIFCONF, (char *) &ifc))
{
//獲取接口信息
intrface = ifc.ifc_len / sizeof (struct ifreq);
printf("interface num is intrface=%d\n\n\n",intrface);
//根據接口信息循環獲取設備IP和MAC地址
while (intrface-- > 0) {
//獲取設備名稱
printf ("net device %s\n", buf[intrface].ifr_name);
//判斷網卡類型
if (!(ioctl (fd, SIOCGIFFLAGS, (char *) &buf[intrface]))) {
if (buf[intrface].ifr_flags & IFF_PROMISC) {
puts ("the interface is PROMISC");
retn++;
}
}
else {
char str[256];
sprintf (str, "cpm: ioctl device %s", buf[intrface].ifr_name);
perror (str);
}
//判斷網卡狀態
if (buf[intrface].ifr_flags & IFF_UP) {
puts("the interface status is UP");
}
else {
puts("the interface status is DOWN");
}
//獲取當前網卡的IP地址
if (!(ioctl (fd, SIOCGIFADDR, (char *) &buf[intrface]))) {
puts("IP address is:");
puts((char *)inet_ntoa(((struct sockaddr_in*)(&buf[intrface].ifr_addr))->sin_addr));
puts("");
//puts (buf[intrface].ifr_addr.sa_data);
}
else {
char str[256];
sprintf (str, "cpm: ioctl device %s", buf[intrface].ifr_name);
perror (str);
}
/* this section can't get Hardware Address,I don't know whether the reason is module driver*/
#ifdef SOLARIS
//獲取MAC地址
arp.arp_pa.sa_family = AF_INET;
arp.arp_ha.sa_family = AF_INET;
((struct sockaddr_in*)&arp.arp_pa)->sin_addr.s_addr=((struct sockaddr_in*)(&buf[intrface].ifr_addr))->sin_addr.s_addr;
if (!(ioctl (fd, SIOCGARP, (char *) &arp))) {
puts ("HW address is:");
//以十六進制顯示MAC地址
printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
(unsigned char)arp.arp_ha.sa_data[0],
(unsigned char)arp.arp_ha.sa_data[1],
(unsigned char)arp.arp_ha.sa_data[2],
(unsigned char)arp.arp_ha.sa_data[3],
(unsigned char)arp.arp_ha.sa_data[4],
(unsigned char)arp.arp_ha.sa_data[5]);
puts("");
puts("");
}
#else
#if 0
/*Get HW ADDRESS of the net card */
if (!(ioctl (fd, SIOCGENADDR, (char *) &buf[intrface]))) {
puts ("HW address is:");
printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
(unsigned char)buf[intrface].ifr_enaddr[0],
(unsigned char)buf[intrface].ifr_enaddr[1],
(unsigned char)buf[intrface].ifr_enaddr[2],
(unsigned char)buf[intrface].ifr_enaddr[3],
(unsigned char)buf[intrface].ifr_enaddr[4],
(unsigned char)buf[intrface].ifr_enaddr[5]);
puts("");
puts("");
}
#endif
if (!(ioctl (fd, SIOCGIFHWADDR, (char *) &buf[intrface]))) {
puts ("HW address is:");
printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[0],
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[1],
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[2],
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[3],
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[4],
(unsigned char)buf[intrface].ifr_hwaddr.sa_data[5]);
puts("");
puts("");
}
#endif
else {
char str[256];
sprintf (str, "cpm: ioctl device %s", buf[intrface].ifr_name);
perror (str);
}
} //while
} else
perror ("cpm: ioctl");
} else
perror ("cpm: socket");
close (fd);
return retn;
}
沒有留言:
張貼留言