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prhwaddrs.c
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prhwaddrs.c
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#include "get_hw_addrs.h"
static char *ntop(struct sockaddr *ip) {
static char ip_str[64] = {'\0'};
struct sockaddr_in *in4 = (struct sockaddr_in *)ip;
struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)ip;
if(in4->sin_family == AF_INET) {
inet_ntop(AF_INET, &in4->sin_addr, ip_str, sizeof(ip_str));
} else if(in4->sin_family == AF_INET6) {
inet_ntop(AF_INET6, &in6->sin6_addr, ip_str, sizeof(ip_str));
} else {
error("Invalid sin_family for ntop.\n");
}
return ip_str;
}
int main (int argc, char **argv) {
struct hwa_info *hwa, *hwahead;
struct sockaddr *sa;
unsigned char *ptr;
int i, prflag;
for (hwahead = hwa = get_hw_addrs(); hwa != NULL; hwa = hwa->hwa_next) {
printf("%s :%s", hwa->if_name, ((hwa->ip_alias) == IP_ALIAS) ? " (alias)\n" : "\n");
if ( (sa = hwa->ip_addr) != NULL)
printf(" IP addr = %s\n", ntop(sa));
prflag = 0;
i = 0;
do {
if (hwa->if_haddr[i] != '\0') {
prflag = 1;
break;
}
} while (++i < IFHWADDRLEN);
if (prflag) {
printf(" HW addr = ");
ptr = hwa->if_haddr;
i = IFHWADDRLEN;
do {
printf("%.2x%s", *ptr++ & 0xff, (i == 1) ? " " : ":");
} while (--i > 0);
}
printf("\n interface index = %d\n\n", hwa->if_index);
}
free_hwa_info(hwahead);
exit(0);
}