4.3BSD-Reno/src/usr.sbin/named/tools/nsquery/nsquery.c

/*
 * Copyright (c) 1986 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1986 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)nsquery.c	4.8 (Berkeley) 6/1/90";
#endif /* not lint */

#include <sys/param.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <resolv.h>
#include <stdio.h>

main(argc, argv)
	int argc;
	char **argv;
{
	extern struct state _res;
	register struct hostent *hp;
	register char *s;

	if (argc >= 2 && strcmp(argv[1], "-d") == 0) {
		_res.options |= RES_DEBUG;
		argc--;
		argv++;
	}
	if (argc < 2) {
		fprintf(stderr, "usage: nsquery [-d] host [server]\n");
		exit(1);
	}
	if (argc == 3) {
		hp = gethostbyname(argv[2]);
		if (hp == NULL) {
			fprintf(stderr, "nsquery:");
			herror(argv[2]);
			exit(1);
		}
		printf("\nServer:\n");
		printanswer(hp);
		_res.nsaddr.sin_addr = *(struct in_addr *)hp->h_addr;
	}

	hp = gethostbyname(argv[1]);
	if (hp == NULL) {
		fprintf(stderr, "nsquery: %s: ", argv[1]);
		herror((char *)NULL);
		exit(1);
	}
	printanswer(hp);
	exit(0);
}

printanswer(hp)
	register struct hostent *hp;
{
	register char **cp;
	extern char *inet_ntoa();

	printf("Name: %s\n", hp->h_name);
#if BSD >= 43 || defined(h_addr)
	printf("Addresses:");
	for (cp = hp->h_addr_list; cp && *cp; cp++)
		printf(" %s", inet_ntoa(*(struct in_addr *)(*cp)));
	printf("\n");
#else
	printf("Address: %s\n", inet_ntoa(*(struct in_addr *)hp->h_addr));
#endif
	printf("Aliases:");
	for (cp = hp->h_aliases; cp && *cp && **cp; cp++)
		printf(" %s", *cp);
	printf("\n\n");
}