mirror of
https://github.com/isc-projects/bind9.git
synced 2026-02-21 08:50:32 -05:00
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2009, 2012-2016 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/.
|
|
*/
|
|
|
|
/* $Id: sample-gai.c,v 1.4 2009/09/02 23:48:02 tbox Exp $ */
|
|
|
|
#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);
|
|
}
|