/* fwhois.c by Ang3ldust (Chris Cappuccio) <ccappuc@santafe.edu>
 * Networking code taken and modified from net.c in the finger source code
 */

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
 *
 * 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.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)fwhois.c	1.00 (DQ) 7/26/93";
#endif /* not lint */

#include <sys/param.h>
#include <sys/file.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <ctype.h>

main(argc, argv)
char **argv;
int argc;
{
	char *stuff, *eleet;
	
	if (argc == 2) {
		eleet = argv[1];
		/* If no host specified, use whois.internic.net */
		if(!index(argv[1],'@')) {
			stuff = strcat(eleet,"@whois.internic.net");
			eleet = stuff;
			}
		}
	/* If the user entered an invalid argument, here they go */
	if (argc != 2) {
		printf("usage: fwhois user[@<whois.server>]\n");
		exit(1);
		}
	netfinger(eleet);
}

netfinger(name)
	char *name;
{
	register FILE *fp;
	register int c, lastc;
	struct in_addr defaddr;
	struct hostent *hp, def;
	struct servent *sp;
	struct sockaddr_in sin;
	int s;
	char *alist[1], *host, *rindex();
	u_long inet_addr();

	if (!(host = rindex(name, '@')))
		return;
	*host++ = NULL;
	if (!(hp = gethostbyname(host))) {
		defaddr.s_addr = inet_addr(host);
		if (defaddr.s_addr == -1) {
			(void)fprintf(stderr,
			    "fwhois: unknown host: %s\n",host);
			return;
		}
		def.h_name = host;
		def.h_addr_list = alist;
		def.h_addr = (char *)&defaddr;
		def.h_length = sizeof(struct in_addr);
		def.h_addrtype = AF_INET;
		def.h_aliases = 0;
		hp = &def;
	}
	if (!(sp = getservbyname("whois", "tcp"))) {
		(void)fprintf(stderr, "fwhois: tcp/whois: unknown service\n");
		return;
	}
	sin.sin_family = hp->h_addrtype;
	bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
	sin.sin_port = sp->s_port;
	if ((s = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0) {
		perror("fwhois: socket");
		return;
	}

	/* have network connection; identify the host connected with */
	(void)printf("[%s]\n", hp->h_name);
	if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
		perror("fwhois: connect");
		(void)close(s);
		return;
	}

	/* send the name followed by <CR><LF> */
	(void)write(s, name, strlen(name));
	(void)write(s, "\r\n", 2);

	if (fp = fdopen(s, "r"))
		while ((c = getc(fp)) != EOF) {
			c &= 0x7f;
			if (c == 0x0d) {
				c = '\n';
				lastc = '\r';
			} else {
				if (!isprint(c) && !isspace(c))
					c |= 0x40;
				if (lastc != '\r' || c != '\n')
					lastc = c;
				else {
					lastc = '\n';
					continue;
				}
			}
			putchar(c);
		}
	if (lastc != '\n')
		putchar('\n');
	(void)fclose(fp);
}