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#include <sys/types.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include "ip.h"
#define HNAME "rskrf.ru"
static struct addrinfo hints;
static struct addrinfo *result, *rp;
static char ip[INET_ADDRSTRLEN];
static int s;
char *get_ip(size_t len)
{
if (len != INET_ADDRSTRLEN) {
fprintf(stderr, "get_ip: len must be %d\n", INET_ADDRSTRLEN);
exit(EXIT_FAILURE);
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_flags = AI_ADDRCONFIG; /* ret IPv4 only if system has IPv4 addr */
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
s = getaddrinfo(HNAME, "https", &hints, &result);
if (s != 0) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
exit(EXIT_FAILURE);
}
for (rp = result; rp != NULL; rp = rp->ai_next) {
inet_ntop(AF_INET,
&((struct sockaddr_in *)(rp->ai_addr))->sin_addr,
ip, INET_ADDRSTRLEN);
}
freeaddrinfo(result);
return ip;
}
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