#include <sys_defs.h>
#include <errno.h>
#include <msg.h>
#include <dns.h>
DNS_RR *dns_sa_to_rr(const char *hostname, unsigned pref, struct sockaddr * sa)
{
#define DUMMY_TTL 0
if (sa->sa_family == AF_INET) {
return (dns_rr_create(hostname, hostname, T_A, C_IN, DUMMY_TTL, pref,
(char *) &SOCK_ADDR_IN_ADDR(sa),
sizeof(SOCK_ADDR_IN_ADDR(sa))));
#ifdef HAS_IPV6
} else if (sa->sa_family == AF_INET6) {
return (dns_rr_create(hostname, hostname, T_AAAA, C_IN, DUMMY_TTL, pref,
(char *) &SOCK_ADDR_IN6_ADDR(sa),
sizeof(SOCK_ADDR_IN6_ADDR(sa))));
#endif
} else {
errno = EAFNOSUPPORT;
return (0);
}
}
#ifdef TEST
#include <vstream.h>
#include <myaddrinfo.h>
#include <inet_proto.h>
static const char *myname;
static NORETURN usage(void)
{
msg_fatal("usage: %s hostname", myname);
}
int main(int argc, char **argv)
{
MAI_HOSTADDR_STR hostaddr;
struct addrinfo *res0;
struct addrinfo *res;
DNS_RR *rr;
int aierr;
myname = argv[0];
if (argc < 2)
usage();
inet_proto_init(argv[0], INET_PROTO_NAME_ALL);
while (*++argv) {
if ((aierr = hostname_to_sockaddr(argv[0], (char *) 0, 0, &res0)) != 0)
msg_fatal("%s: %s", argv[0], MAI_STRERROR(aierr));
for (res = res0; res != 0; res = res->ai_next) {
if ((rr = dns_sa_to_rr(argv[0], 0, res->ai_addr)) == 0)
msg_fatal("dns_sa_to_rr: %m");
if (dns_rr_to_pa(rr, &hostaddr) == 0)
msg_fatal("dns_rr_to_pa: %m");
vstream_printf("%s -> %s\n", argv[0], hostaddr.buf);
vstream_fflush(VSTREAM_OUT);
dns_rr_free(rr);
}
freeaddrinfo(res0);
}
return (0);
}
#endif