Return to whois.c CVS log

Up to [local] / src / usr.bin / whois

Remove trailing space in "Whois Server: " since not all records
have whitespace separating that string and the hostname of the
whois server (and we strip out whitespace before the hostname anyway).
Fixes lookups of .org and probably others.

/*	$OpenBSD: whois.c,v 1.24 2003/04/15 23:24:45 millert 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.
 */

#ifndef lint
static const char 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 const char sccsid[] = "@(#)whois.c	8.1 (Berkeley) 6/6/93";
#else
static const char rcsid[] = "$OpenBSD: whois.c,v 1.24 2003/04/15 23:24:45 millert Exp $";
#endif
#endif /* not lint */

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define	NICHOST		"whois.crsnic.net"
#define	INICHOST	"whois.networksolutions.com"
#define	CNICHOST	"whois.corenic.net"
#define	DNICHOST	"whois.nic.mil"
#define	GNICHOST	"whois.nic.gov"
#define	ANICHOST	"whois.arin.net"
#define	RNICHOST	"whois.ripe.net"
#define	PNICHOST	"whois.apnic.net"
#define	RUNICHOST	"whois.ripn.net"
#define	MNICHOST	"whois.ra.net"
#define LNICHOST	"whois.lacnic.net"
#define SNICHOST	"whois.6bone.net"
#define BNICHOST	"whois.registro.br"
#define	QNICHOST_TAIL	".whois-servers.net"

#define	WHOIS_PORT	"whois"
#define	WHOIS_SERVER_ID	"Whois Server:"

#define WHOIS_RECURSE		0x01
#define WHOIS_QUICK		0x02

const char *port = WHOIS_PORT;
const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, NULL };

static __dead void usage(void);
static int whois(const char *, const char *, const char *, int);
static char *choose_server(const char *, const char *);

int
main(int argc, char **argv)
{
	int ch, flags, rval;
	char *host, *name, *country, *server;

#ifdef SOCKS
	SOCKSinit(argv[0]);
#endif
	country = host = server = NULL;
	flags = rval = 0;
	while ((ch = getopt(argc, argv, "aAc:dgh:ilmp:qQrR6")) != -1)
		switch(ch) {
		case 'a':
			host = ANICHOST;
			break;
		case 'A':
			host = PNICHOST;
			break;
		case 'c':
			country = optarg;
			break;
		case 'd':
			host = DNICHOST;
			break;
		case 'g':
			host = GNICHOST;
			break;
		case 'h':
			host = optarg;
			break;
		case 'i':
			host = INICHOST;
			break;
		case 'l':
			host = LNICHOST;
			break;
		case 'm':
			host = MNICHOST;
			break;
		case 'p':
			port = optarg;
			break;
		case 'q':
			/* deprecated, now the default */
			break;
		case 'Q':
			flags |= WHOIS_QUICK;
			break;
		case 'r':
			host = RNICHOST;
			break;
		case 'R':
			host = RUNICHOST;
			break;
		case '6':
			host = SNICHOST;
			break;
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (!argc || (country != NULL && host != NULL))
		usage();

	if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
		flags |= WHOIS_RECURSE;
	for (name = *argv; (name = *argv) != NULL; argv++)
		rval += whois(name, host ? host : choose_server(name, country),
		    port, flags);
	exit(rval);
}

static int
whois(const char *query, const char *server, const char *port, int flags)
{
	FILE *sfi, *sfo;
	char *buf, *p, *nhost, *nbuf = NULL;
	size_t len;
	int i, s, error;
	const char *reason = NULL;
	struct addrinfo hints, *res, *ai;

	memset(&hints, 0, sizeof(hints));
	hints.ai_flags = 0;
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	error = getaddrinfo(server, port, &hints, &res);
	if (error) {
		warnx("%s: %s", server, gai_strerror(error));
		return (1);
	}

	for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
		s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
		if (s < 0) {
			reason = "socket";
			continue;
		}
		if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
			reason = "connect";
			close(s);
			s = -1;
			continue;
		}
		break;	/*okay*/
	}
	if (s < 0) {
		if (reason)
			warn("%s: %s", server, reason);
		else
			warn("unknown error in connection attempt");
		freeaddrinfo(res);
		return (1);
	}

	sfi = fdopen(s, "r");
	sfo = fdopen(s, "w");
	if (sfi == NULL || sfo == NULL)
		err(1, "fdopen");
	(void)fprintf(sfo, "%s\r\n", query);
	(void)fflush(sfo);
	nhost = NULL;
	while ((buf = fgetln(sfi, &len)) != NULL) {
		p = buf + len - 1;
		if (isspace((unsigned char)*p)) {
			do
				*p-- = '\0';
			while (p != buf && isspace((unsigned char)*p));
		} else {
			if ((nbuf = malloc(len + 1)) == NULL)
				err(1, "malloc");
			memcpy(nbuf, buf, len);
			nbuf[len] = '\0';
			buf = nbuf;
		}
		(void)puts(buf);

		if (nhost != NULL || !(flags & WHOIS_RECURSE))
			continue;

		if ((p = strstr(buf, WHOIS_SERVER_ID))) {
			p += sizeof(WHOIS_SERVER_ID) - 1;
			if ((len = strcspn(p, " \t\n\r"))) {
				if ((nhost = malloc(len + 1)) == NULL)
					err(1, "malloc");
				memcpy(nhost, p, len);
				nhost[len] = '\0';
			}
		} else if (strcmp(server, ANICHOST) == 0) {
			for (p = buf; *p != '\0'; p++)
				*p = tolower((unsigned char)*p);
			for (i = 0; ip_whois[i] != NULL; i++) {
				if (strstr(buf, ip_whois[i]) != NULL) {
					nhost = strdup(ip_whois[i]);
					if (nhost == NULL)
						err(1, "strdup");
					break;
				}
			}
		}
	}
	if (nbuf != NULL)
		free(nbuf);

	if (nhost != NULL) {
		error = whois(query, nhost, port, 0);
		free(nhost);
	}
	freeaddrinfo(res);
	return (error);
}

/*
 * If no country is specified determine the top level domain from the query.
 * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
 * If the domain does not contain '.', check to see if it is an NSI handle
 * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+).
 * Fall back to NICHOST for the non-handle case.
 */
static char *
choose_server(const char *name, const char *country)
{
	static char *server;
	const char *qhead;
	char *ep;
	size_t len;

	if (country != NULL)
		qhead = country;
	else if ((qhead = strrchr(name, '.')) == NULL) {
		if (*name == '!')
			return (INICHOST);
		else if ((strncasecmp(name, "COCO-", 5) == 0 ||
		    strncasecmp(name, "COHO-", 5) == 0) &&
		    strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
			return (CNICHOST);  
		else
			return (NICHOST);
	} else if (isdigit(*(++qhead)))
		return (ANICHOST);
	len = strlen(qhead) + sizeof(QNICHOST_TAIL);
	if ((server = realloc(server, len)) == NULL)
		err(1, "realloc");
	strlcpy(server, qhead, len);
	strlcat(server, QNICHOST_TAIL, len);
	return (server);
}

static __dead void
usage(void)
{
	extern char *__progname;

	(void)fprintf(stderr,
	    "usage: %s [-aAdgilmQrR6] [-c country-code | -h hostname] "
		"[-p port] name ...\n", __progname);
	exit(1);
}