sourceturner
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
// Adapted from https://gist.github.com/jirihnidek/bf7a2363e480491da72301b228b35d5d
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <netdb.h>
|
|
#include <sys/types.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include "test_helpers.h"
|
|
|
|
#ifdef INET6_ADDRSTRLEN
|
|
#define _ADDRSTRLEN INET6_ADDRSTRLEN
|
|
#else
|
|
#define _ADDRSTRLEN INET_ADDRSTRLEN
|
|
#endif
|
|
|
|
int main(void) {
|
|
struct addrinfo hints, *res;
|
|
int errcode;
|
|
char addrstr[_ADDRSTRLEN];
|
|
void *ptr;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_flags |= AI_CANONNAME;
|
|
|
|
errcode = getaddrinfo("www.redox-os.org", NULL, &hints, &res);
|
|
if (errcode != 0) {
|
|
perror("getaddrinfo");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
while (res) {
|
|
switch (res->ai_family) {
|
|
case AF_INET:
|
|
ptr = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
|
|
break;
|
|
#ifdef AF_INET6
|
|
case AF_INET6:
|
|
ptr = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
|
|
break;
|
|
#endif
|
|
default:
|
|
ptr = NULL;
|
|
}
|
|
if (ptr) {
|
|
inet_ntop(res->ai_family, ptr, addrstr, _ADDRSTRLEN);
|
|
|
|
printf(
|
|
"IPv%d address: %s (%s)\n",
|
|
res->ai_family == AF_INET ? 4 : 6,
|
|
addrstr,
|
|
res->ai_canonname
|
|
);
|
|
}
|
|
|
|
res = res->ai_next;
|
|
}
|
|
}
|