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#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <libggnet_dns.h>
static void _cb_dns(struct in_addr *, char *, void *);
struct event_base *_ev_base;
char *_name = NULL;
int _answer = 0;
int
main(int argc, char *argv[])
{
struct ggnet_dns *ggdns;
struct in_addr ip;
struct timeval tv;
if (argc < 2) {
printf("usage: dnsreverse <fqdn>\n");
exit(1);
}
inet_aton(argv[1], &ip);
ip.s_addr = ntohl(ip.s_addr);
bzero(&tv, sizeof(struct timeval));
tv.tv_sec = 5;
_ev_base = event_base_new();
ggdns = ggnet_dns_new(_ev_base);
ggnet_dns_reverse(ggdns, &ip, _cb_dns, NULL);
event_base_loopexit(_ev_base, &tv);
event_base_dispatch(_ev_base);
if (_answer)
printf("%x: %s\n", ip.s_addr, _name);
else
printf("no answer\n");
return 0;
}
static void
_cb_dns(struct in_addr *ip, char *name, void *data)
{
_name = name;
_answer = 1;
event_base_loopexit(_ev_base, NULL);
}
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