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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <config.h>
#include <isc/net.h>
#include <isc/print.h>
#include <irs/netdb.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
static void
do_gai(int family, char *hostname) {
struct addrinfo hints, *res, *res0;
int error;
char namebuf[1024], addrbuf[1024], servbuf[1024];
memset(&hints, 0, sizeof(hints));
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
error = getaddrinfo(hostname, "http", &hints, &res0);
if (error) {
fprintf(stderr, "getaddrinfo failed for %s,family=%d: %s\n",
hostname, family, gai_strerror(error));
return;
}
for (res = res0; res; res = res->ai_next) {
error = getnameinfo(res->ai_addr,
(socklen_t)res->ai_addrlen,
addrbuf, sizeof(addrbuf),
NULL, 0, NI_NUMERICHOST);
if (error == 0)
error = getnameinfo(res->ai_addr,
(socklen_t)res->ai_addrlen,
namebuf, sizeof(namebuf),
servbuf, sizeof(servbuf), 0);
if (error != 0) {
fprintf(stderr, "getnameinfo failed: %s\n",
gai_strerror(error));
} else {
printf("%s(%s/%s)=%s:%s\n", hostname,
res->ai_canonname, addrbuf, namebuf, servbuf);
}
}
freeaddrinfo(res0);
}
int
main(int argc, char *argv[]) {
if (argc < 2)
exit(1);
do_gai(AF_INET, argv[1]);
do_gai(AF_INET6, argv[1]);
do_gai(AF_UNSPEC, argv[1]);
return (0);
}
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