133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/* $NetBSD: whois.c,v 1.7 1997/10/20 03:23:38 lukem Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1980, 1993
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93";
|
|
#else
|
|
__RCSID("$NetBSD: whois.c,v 1.7 1997/10/20 03:23:38 lukem Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <err.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define NICHOST "whois.internic.net"
|
|
|
|
int main __P((int, char **));
|
|
static void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
extern char *optarg;
|
|
extern int optind;
|
|
FILE *sfi, *sfo;
|
|
int ch;
|
|
struct sockaddr_in sin;
|
|
struct hostent *hp;
|
|
struct servent *sp;
|
|
int s;
|
|
char *host;
|
|
|
|
host = NICHOST;
|
|
while ((ch = getopt(argc, argv, "h:")) != -1)
|
|
switch((char)ch) {
|
|
case 'h':
|
|
host = optarg;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (!argc)
|
|
usage();
|
|
|
|
hp = gethostbyname(host);
|
|
if (hp == NULL)
|
|
errx(1, "%s: %s", host, hstrerror(h_errno));
|
|
host = hp->h_name;
|
|
s = socket(hp->h_addrtype, SOCK_STREAM, 0);
|
|
if (s < 0)
|
|
err(1, "socket");
|
|
memset((caddr_t)&sin, 0, sizeof (sin));
|
|
sin.sin_family = hp->h_addrtype;
|
|
if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0)
|
|
err(1, "bind");
|
|
memmove((char *)&sin.sin_addr, hp->h_addr, hp->h_length);
|
|
sp = getservbyname("whois", "tcp");
|
|
if (sp == NULL)
|
|
errx(1, "whois/tcp: unknown service");
|
|
sin.sin_port = sp->s_port;
|
|
if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0)
|
|
err(1, "connect");
|
|
sfi = fdopen(s, "r");
|
|
sfo = fdopen(s, "w");
|
|
if (sfi == NULL || sfo == NULL)
|
|
err(1, "fdopen");
|
|
while (argc-- > 1)
|
|
(void)fprintf(sfo, "%s ", *argv++);
|
|
(void)fprintf(sfo, "%s\r\n", *argv);
|
|
(void)fflush(sfo);
|
|
while ((ch = getc(sfi)) != EOF)
|
|
putchar(ch);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: whois [-h hostname] name ...\n");
|
|
exit(1);
|
|
}
|