PC-Online 1996 May/PCOnline_05_1996.bin/linux/source/n/bind/bind-4.001/bind-4~/bind-4.9.3-BETA9/tools/nsquery.c

C/C++ Source or Header | 1994-06-11 | 5KB | 141 lines

/*
 * ++Copyright++ 1986
 * -
 * Copyright (c) 1986
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *     This product includes software developed by the University of
 *     California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * -
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Digital Equipment Corporation not be used in advertising or
 * publicity pertaining to distribution of the document or software without
 * specific, written prior permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 * -
 * --Copyright--
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1986 Regents of the University of California.\n\
 portions Copyright (c) 1993 Digital Equipment Corporation\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)nsquery.c    4.8 (Berkeley) 6/1/90";
static char rcsid[] = "$Id: nsquery.c,v 4.9.1.4 1994/06/11 22:05:07 vixie Exp $";
#endif /* not lint */

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

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

    res_init();

    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;
#ifdef nsaddr    /* struct __res_state includes nscount and nsaddr_list[] */
        _res.nscount = 1;
#endif
    }

    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;

    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");
}