GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/whois/whois.c Lines: 0 157 0.0 %
Date: 2017-11-13 Branches: 0 141 0.0 %

Line Branch Exec Source
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/*      $OpenBSD: whois.c,v 1.56 2017/07/26 15:48:38 sthen Exp $   */
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/*
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 * Copyright (c) 1980, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define	NICHOST		"whois.crsnic.net"
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#define	INICHOST	"whois.networksolutions.com"
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#define	CNICHOST	"whois.corenic.net"
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#define	DNICHOST	"whois.nic.mil"
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#define	GNICHOST	"whois.nic.gov"
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#define	ANICHOST	"whois.arin.net"
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#define	RNICHOST	"whois.ripe.net"
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#define	PNICHOST	"whois.apnic.net"
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#define	RUNICHOST	"whois.ripn.net"
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#define	MNICHOST	"whois.ra.net"
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#define LNICHOST	"whois.lacnic.net"
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#define	AFNICHOST	"whois.afrinic.net"
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#define BNICHOST	"whois.registro.br"
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#define	PDBHOST		"whois.peeringdb.com"
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#define	IANAHOST	"whois.iana.org"
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#define	QNICHOST_TAIL	".whois-servers.net"
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#define	WHOIS_PORT	"whois"
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#define	WHOIS_SERVER_ID	"Registrar WHOIS Server:"
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#define WHOIS_RECURSE		0x01
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#define WHOIS_QUICK		0x02
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const char *port_whois = WHOIS_PORT;
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const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
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    AFNICHOST, NULL };
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__dead void usage(void);
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int whois(const char *, const char *, const char *, int);
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char *choose_server(const char *, const char *, char **);
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int
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main(int argc, char *argv[])
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{
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	int ch, flags, rval;
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	char *host, *name, *country;
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	country = host = NULL;
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	flags = rval = 0;
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	while ((ch = getopt(argc, argv, "aAc:dgh:iIlmp:PqQrR")) != -1)
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		switch (ch) {
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		case 'a':
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			host = ANICHOST;
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			break;
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		case 'A':
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			host = PNICHOST;
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			break;
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		case 'c':
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			country = optarg;
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			break;
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		case 'd':
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			host = DNICHOST;
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			break;
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		case 'g':
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			host = GNICHOST;
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			break;
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		case 'h':
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			host = optarg;
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			break;
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		case 'i':
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			host = INICHOST;
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			break;
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		case 'I':
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			host = IANAHOST;
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			break;
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		case 'l':
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			host = LNICHOST;
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			break;
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		case 'm':
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			host = MNICHOST;
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			break;
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		case 'p':
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			port_whois = optarg;
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			break;
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		case 'P':
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			host = PDBHOST;
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			break;
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		case 'q':
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			/* deprecated, now the default */
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			break;
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		case 'Q':
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			flags |= WHOIS_QUICK;
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			break;
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		case 'r':
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			host = RNICHOST;
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			break;
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		case 'R':
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			host = RUNICHOST;
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			break;
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		default:
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			usage();
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		}
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	argc -= optind;
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	argv += optind;
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	if (!argc || (country != NULL && host != NULL))
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		usage();
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	if (pledge("stdio dns inet flock rpath cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
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		flags |= WHOIS_RECURSE;
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	for (name = *argv; (name = *argv) != NULL; argv++) {
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		char *tofree = NULL;
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		const char *server =
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		    host ? host : choose_server(name, country, &tofree);
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		rval += whois(name, server, port_whois, flags);
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		free(tofree);
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	}
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	return (rval);
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}
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int
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whois(const char *query, const char *server, const char *port, int flags)
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{
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	FILE *fp;
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	char *buf, *p, *nhost, *nbuf = NULL;
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	size_t len;
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	int i, s, error;
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	const char *reason = NULL, *fmt;
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	struct addrinfo hints, *res, *ai;
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	memset(&hints, 0, sizeof(hints));
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	hints.ai_flags = 0;
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	hints.ai_family = AF_UNSPEC;
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	hints.ai_socktype = SOCK_STREAM;
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	error = getaddrinfo(server, port, &hints, &res);
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	if (error) {
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		if (error == EAI_SERVICE)
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			warnx("%s: bad port", port);
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		else
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			warnx("%s: %s", server, gai_strerror(error));
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		return (1);
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	}
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	for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
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		s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
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		if (s == -1) {
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			error = errno;
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			reason = "socket";
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			continue;
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		}
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		if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
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			error = errno;
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			reason = "connect";
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			close(s);
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			s = -1;
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			continue;
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		}
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		break;	/*okay*/
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	}
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	if (s == -1) {
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		if (reason) {
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			errno = error;
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			warn("%s: %s", server, reason);
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		} else
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			warn("unknown error in connection attempt");
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		freeaddrinfo(res);
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		return (1);
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	}
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	if (strcmp(server, "whois.denic.de") == 0 ||
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	    strcmp(server, "de" QNICHOST_TAIL) == 0)
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		fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
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	else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
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	    strcmp(server, "dk" QNICHOST_TAIL) == 0)
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		fmt = "--show-handles %s\r\n";
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	else
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		fmt = "%s\r\n";
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	fp = fdopen(s, "r+");
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	if (fp == NULL)
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		err(1, "fdopen");
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	fprintf(fp, fmt, query);
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	fflush(fp);
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	nhost = NULL;
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	while ((buf = fgetln(fp, &len)) != NULL) {
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		p = buf + len - 1;
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		if (isspace((unsigned char)*p)) {
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			do
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				*p = '\0';
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			while (p > buf && isspace((unsigned char)*--p));
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		} else {
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			if ((nbuf = malloc(len + 1)) == NULL)
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				err(1, "malloc");
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			memcpy(nbuf, buf, len);
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			nbuf[len] = '\0';
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			buf = nbuf;
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		}
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		puts(buf);
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		if (nhost != NULL || !(flags & WHOIS_RECURSE))
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			continue;
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		if ((p = strstr(buf, WHOIS_SERVER_ID))) {
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			p += sizeof(WHOIS_SERVER_ID) - 1;
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			while (isblank((unsigned char)*p))
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				p++;
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			if ((len = strcspn(p, " \t\n\r"))) {
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				if ((nhost = malloc(len + 1)) == NULL)
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					err(1, "malloc");
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				memcpy(nhost, p, len);
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				nhost[len] = '\0';
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			}
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		} else if (strcmp(server, ANICHOST) == 0) {
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			for (p = buf; *p != '\0'; p++)
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				*p = tolower((unsigned char)*p);
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			for (i = 0; ip_whois[i] != NULL; i++) {
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				if (strstr(buf, ip_whois[i]) != NULL) {
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					nhost = strdup(ip_whois[i]);
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					if (nhost == NULL)
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						err(1, "strdup");
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					break;
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				}
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			}
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		}
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	}
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	fclose(fp);
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	free(nbuf);
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	if (nhost != NULL) {
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		error = whois(query, nhost, port, 0);
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		free(nhost);
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	}
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	freeaddrinfo(res);
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	return (error);
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}
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/*
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 * If no country is specified determine the top level domain from the query.
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 * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
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 * If the domain does not contain '.', check to see if it is an NSI handle
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 * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an
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 * ASN (starts with AS). Fall back to NICHOST for the non-handle case.
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 */
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char *
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choose_server(const char *name, const char *country, char **tofree)
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{
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	char *server;
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	const char *qhead;
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	char *ep;
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	struct addrinfo hints, *res;
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	memset(&hints, 0, sizeof(hints));
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	hints.ai_flags = 0;
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	hints.ai_family = AF_UNSPEC;
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	hints.ai_socktype = SOCK_STREAM;
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	if (country != NULL)
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		qhead = country;
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	else if ((qhead = strrchr(name, '.')) == NULL) {
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		if (*name == '!')
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			return (INICHOST);
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		else if ((strncasecmp(name, "COCO-", 5) == 0 ||
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		    strncasecmp(name, "COHO-", 5) == 0) &&
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		    strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
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			return (CNICHOST);
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		else if ((strncasecmp(name, "AS", 2) == 0) &&
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		    strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
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			return (MNICHOST);
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		else
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			return (NICHOST);
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	} else if (isdigit((unsigned char)*(++qhead)))
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		return (ANICHOST);
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	/*
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	 * Post-2003 ("new") gTLDs are all supposed to have "whois.nic.domain"
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	 * (per registry agreement), some older gTLDs also support this...
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	 */
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	if (asprintf(&server, "whois.nic.%s", qhead) == -1)
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		err(1, NULL);
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	/* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */
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	if ((strlen(qhead) == 2 ||
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	    /* and is required for most of the <=2003 TLDs/gTLDs */
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	    strcasecmp(qhead, "org") == 0 ||
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	    strcasecmp(qhead, "com") == 0 ||
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	    strcasecmp(qhead, "net") == 0 ||
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	    strcasecmp(qhead, "cat") == 0 ||
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	    strcasecmp(qhead, "pro") == 0 ||
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	    strcasecmp(qhead, "info") == 0 ||
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	    strcasecmp(qhead, "aero") == 0 ||
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	    strcasecmp(qhead, "jobs") == 0 ||
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	    strcasecmp(qhead, "mobi") == 0 ||
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	    strcasecmp(qhead, "museum") == 0 ||
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	     /* for others, if whois.nic.TLD doesn't exist, try whois-servers */
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	    getaddrinfo(server, NULL, &hints, &res) != 0)) {
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		free(server);
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		if (asprintf(&server, "%s%s", qhead, QNICHOST_TAIL) == -1)
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			err(1, NULL);
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	}
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	*tofree = server;
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	return (server);
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}
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__dead void
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usage(void)
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{
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	extern char *__progname;
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	fprintf(stderr,
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	    "usage: %s [-AadgIilmPQRr] [-c country-code | -h host] "
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		"[-p port] name ...\n", __progname);
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	exit(1);
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}