#include <sys_defs.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <msg.h>
#include <dns.h>
const char *dns_rr_to_pa(DNS_RR *rr, MAI_HOSTADDR_STR *hostaddr)
{
if (rr->type == T_A) {
return (inet_ntop(AF_INET, rr->data, hostaddr->buf,
sizeof(hostaddr->buf)));
#ifdef HAS_IPV6
} else if (rr->type == T_AAAA) {
return (inet_ntop(AF_INET6, rr->data, hostaddr->buf,
sizeof(hostaddr->buf)));
#endif
} else {
errno = EAFNOSUPPORT;
return (0);
}
}
#ifdef TEST
#include <vstream.h>
#include <myaddrinfo.h>
static const char *myname;
static NORETURN usage(void)
{
msg_fatal("usage: %s dnsaddrtype hostname", myname);
}
int main(int argc, char **argv)
{
DNS_RR *rr;
MAI_HOSTADDR_STR hostaddr;
VSTRING *why;
int type;
myname = argv[0];
if (argc < 3)
usage();
why = vstring_alloc(1);
while (*++argv) {
if (argv[1] == 0)
usage();
if ((type = dns_type(argv[0])) == 0)
usage();
if (dns_lookup(argv[1], type, 0, &rr, (VSTRING *) 0, why) != DNS_OK)
msg_fatal("%s: %s", argv[1], vstring_str(why));
if (dns_rr_to_pa(rr, &hostaddr) == 0)
msg_fatal("dns_rr_to_sa: %m");
vstream_printf("%s -> %s\n", argv[1], hostaddr.buf);
vstream_fflush(VSTREAM_OUT);
argv += 1;
dns_rr_free(rr);
}
vstring_free(why);
return (0);
}
#endif