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<hr><p align="left"><small>ipmac.c <br>
---------------------------------------------------------------------------- <br>
---- <br>
cloudsky 于 00-6-22 15:58:57 加贴在 绿盟科技论坛(bbs.nsfocus.com)--UNIX系统 <br>
安全： <br>
/* gcc -o ipmac ipmac.c */ <br>
#include <stdio.h> <br>
#include <string.h> <br>
#include <netdb.h> <br>
#include <arpa/inet.h> <br>
#include <netinet/in.h> <br>
#include <sys/types.h> <br>
#include <sys/socket.h> <br>
#include <sys/ioctl.h> <br>
#include <net/if.h> <br>
#include <net/if_arp.h> <br>
#include <net/ethernet.h> <br>
#include <signal.h> <br>
#include <netinet/ip.h> <br>
struct in_addr myself, mymask; <br>
int fd_arp; /* socket fd for receive packets */ <br>
struct ifreq ifr; /* ifr structure */ <br>
main (int argc, char* argv[]) { <br>
char device[32]; /* ethernet device name */ <br>
struct sockaddr from, to; <br>
int fromlen; <br>
struct sockaddr_in *sin_ptr; <br>
u_char *ptr; <br>
int n; <br>
strcpy(device, "eth0"); <br>
if ((fd_arp = socket(AF_INET, SOCK_PACKET, htons(0x0806))) < 0) { <br>
perror( "arp socket error"); <br>
exit(-1); <br>
} <br>
strcpy(ifr.ifr_name, device); <br>
/* ifr.ifr_addr.sa_family = AF_INET; */ <br>
/* get ip address of my interface */ <br>
if (ioctl(fd_arp, SIOCGIFADDR, &ifr) < 0) { <br>
perror("ioctl SIOCGIFADDR error"); <br>
exit(-1); <br>
} <br>
sin_ptr = (struct sockaddr_in *)&ifr.ifr_addr; <br>
myself = sin_ptr->sin_addr; <br>
/* get network mask of my interface */ <br>
if (ioctl(fd_arp, SIOCGIFNETMASK, &ifr) < 0) { <br>
perror("ioctl SIOCGIFNETMASK error"); <br>
exit(-1); <br>
} <br>
sin_ptr = (struct sockaddr_in *)&ifr.ifr_addr; <br>
mymask = sin_ptr->sin_addr; <br>
/* get mac address of the interface */ <br>
if (ioctl(fd_arp, SIOCGIFHWADDR, &ifr) < 0) { <br>
perror("ioctl SIOCGIFHWADDR error"); <br>
exit(-1); <br>
} <br>
ptr = (u_char *)&ifr.ifr_ifru.ifru_hwaddr.sa_data[0]; <br>
printf( "request mac %02x:%02x:%02x:%02x:%02x:%02x, ", <br>
*ptr, *(ptr + 1), *(ptr + 2), *(ptr + 3), <br>
*(ptr + 4), *(ptr + 5) ); <br>
printf( "request netmask %s ", inet_ntoa(mymask)); <br>
printf( "request IP %s\n", inet_ntoa(myself)); <br>
} /* end of main */ <br>
---------------------------------------------------------------------------- <br>
---- <br>
傻傻 于 00-6-26 9:47:57 加贴在 绿盟科技论坛(bbs.nsfocus.com)--UNIX系统安全： <br>
<br>
如果网卡支持修改MAC地址的例程的话,可以在上面的程序中加入SIOCSIFHWADDR. <br>
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