Return to whois.c CVS log

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

whois: remove obsolete handle support

Contact handles have been obsolete for some time now.  The "!handle"
InterNic syntax no longer works and core COCO handle queries seems
to only return empty records.  OK sthen@ job@

/*      $OpenBSD: whois.c,v 1.62 2024/03/24 19:51:47 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. 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/types.h>
#include <sys/socket.h>

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

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

#define	NICHOST		"whois.crsnic.net"
#define	INICHOST	"whois.internic.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	AFNICHOST	"whois.afrinic.net"
#define BNICHOST	"whois.registro.br"
#define	PDBHOST		"whois.peeringdb.com"
#define	IANAHOST	"whois.iana.org"
#define	QNICHOST_TAIL	".whois-servers.net"

#define	WHOIS_PORT	"whois"
#define	WHOIS_SERVER_ID	"Registrar WHOIS Server:"

#define WHOIS_RECURSE	0x01
#define WHOIS_QUICK	0x02
#define WHOIS_SPAM_ME	0x04

#define CHOPSPAM	">>> Last update of WHOIS database:"

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

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

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

	country = host = NULL;
	flags = rval = 0;
	while ((ch = getopt(argc, argv, "aAc:dgh:iIlmp:PqQrRS")) != -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 'I':
			host = IANAHOST;
			break;
		case 'l':
			host = LNICHOST;
			break;
		case 'm':
			host = MNICHOST;
			break;
		case 'p':
			port_whois = optarg;
			break;
		case 'P':
			host = PDBHOST;
			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 'S':
			flags |= WHOIS_SPAM_ME;
			break;
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

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

	if (pledge("stdio dns inet", NULL) == -1)
		err(1, "pledge");

	if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
		flags |= WHOIS_RECURSE;
	for (name = *argv; (name = *argv) != NULL; argv++) {
		char *tofree = NULL;
		const char *server =
		    host ? host : choose_server(name, country, &tofree);
		rval += whois(name, server, port_whois, flags);
		free(tofree);
	}
	return (rval);
}

int
whois(const char *query, const char *server, const char *port, int flags)
{
	FILE *fp;
	char *buf, *p, *nhost, *nbuf = NULL;
	size_t len;
	int i, s, error;
	const char *reason = NULL, *fmt;
	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) {
		if (error == EAI_SERVICE)
			warnx("%s: bad port", port);
		else
			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 == -1) {
			error = errno;
			reason = "socket";
			continue;
		}
		if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
			error = errno;
			reason = "connect";
			close(s);
			s = -1;
			continue;
		}
		break;	/*okay*/
	}
	freeaddrinfo(res);
	if (s == -1) {
		if (reason) {
			errno = error;
			warn("%s: %s", server, reason);
		} else
			warn("unknown error in connection attempt");
		return (1);
	}

	if (!(flags & WHOIS_SPAM_ME) &&
	    (strcmp(server, "whois.denic.de") == 0 ||
	    strcmp(server, "de" QNICHOST_TAIL) == 0))
		fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
	else if (!(flags & WHOIS_SPAM_ME) &&
	    (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
	    strcmp(server, "dk" QNICHOST_TAIL) == 0))
		fmt = "--show-handles %s\r\n";
	else
		fmt = "%s\r\n";

	fp = fdopen(s, "r+");
	if (fp == NULL)
		err(1, "fdopen");
	fprintf(fp, fmt, query);
	fflush(fp);
	nhost = NULL;
	while ((buf = fgetln(fp, &len)) != NULL) {
		/* Nominet */
		if (!(flags & WHOIS_SPAM_ME) &&
		    len == 5 && strncmp(buf, "-- \r\n", 5) == 0)
			break;

		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;
		}
		puts(buf);

		if (nhost == NULL && (flags & WHOIS_RECURSE)) {
			if ((p = strstr(buf, WHOIS_SERVER_ID))) {
				p += sizeof(WHOIS_SERVER_ID) - 1;
				while (isblank((unsigned char)*p))
					p++;
				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;
					}
				}
			}
		}

		/* Verisign etc. */
		if (!(flags & WHOIS_SPAM_ME) &&
		    len >= sizeof(CHOPSPAM)-1 &&
		    (strncasecmp(buf, CHOPSPAM, sizeof(CHOPSPAM)-1) == 0 ||
		     strncasecmp(buf, &CHOPSPAM[4], sizeof(CHOPSPAM)-5) == 0)) {
			printf("\n");
			break;
		}
	}
	fclose(fp);
	free(nbuf);

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

	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 ASN (starts
 * with AS) or IPv6 address (contains ':').
 * Fall back to NICHOST for the non-handle and non-IPv6 case.
 */
char *
choose_server(const char *name, const char *country, char **tofree)
{
	char *server;
	const char *qhead;
	char *ep;
	struct addrinfo hints, *res = NULL;

	memset(&hints, 0, sizeof(hints));
	hints.ai_flags = 0;
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;

	if (country != NULL)
		qhead = country;
	else if ((qhead = strrchr(name, '.')) == NULL) {
		if ((strncasecmp(name, "AS", 2) == 0) &&
		    strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
			return (MNICHOST);
		else if (strchr(name, ':') != NULL) /* IPv6 address */
			return (ANICHOST);
		else
			return (NICHOST);
	} else if (isdigit((unsigned char)*(++qhead)))
		return (ANICHOST);

	/*
	 * Post-2003 ("new") gTLDs are all supposed to have "whois.nic.domain"
	 * (per registry agreement), some older gTLDs also support this...
	 */
	if (asprintf(&server, "whois.nic.%s", qhead) == -1)
		err(1, NULL);

	/* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */
	if ((strlen(qhead) == 2 ||
	    /* and is required for most of the <=2003 TLDs/gTLDs */
	    strcasecmp(qhead, "org") == 0 ||
	    strcasecmp(qhead, "com") == 0 ||
	    strcasecmp(qhead, "net") == 0 ||
	    strcasecmp(qhead, "cat") == 0 ||
	    strcasecmp(qhead, "pro") == 0 ||
	    strcasecmp(qhead, "info") == 0 ||
	    strcasecmp(qhead, "aero") == 0 ||
	    strcasecmp(qhead, "jobs") == 0 ||
	    strcasecmp(qhead, "mobi") == 0 ||
	    strcasecmp(qhead, "museum") == 0 ||
	     /* for others, if whois.nic.TLD doesn't exist, try whois-servers */
	    getaddrinfo(server, NULL, &hints, &res) != 0)) {
		free(server);
		if (asprintf(&server, "%s%s", qhead, QNICHOST_TAIL) == -1)
			err(1, NULL);
	}
	if (res != NULL)
		freeaddrinfo(res);

	*tofree = server;
	return (server);
}

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

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