2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)whois.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/whois/whois.c,v 1.15.2.11 2003/02/25 20:59:41 roberto Exp $
36 * $DragonFly: src/usr.bin/whois/whois.c,v 1.2 2003/06/17 04:29:33 dillon Exp $
39 #include <sys/types.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <arpa/inet.h>
53 #define NICHOST "whois.crsnic.net"
54 #define INICHOST "whois.networksolutions.com"
55 #define DNICHOST "whois.nic.mil"
56 #define GNICHOST "whois.nic.gov"
57 #define ANICHOST "whois.arin.net"
58 #define LNICHOST "whois.lacnic.net"
59 #define RNICHOST "whois.ripe.net"
60 #define PNICHOST "whois.apnic.net"
61 #define RUNICHOST "whois.ripn.net"
62 #define MNICHOST "whois.ra.net"
63 #define QNICHOST_TAIL ".whois-servers.net"
64 #define SNICHOST "whois.6bone.net"
65 #define BNICHOST "whois.registro.br"
66 #define WHOIS_SERVER_ID "Whois Server: "
67 #define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:"
69 #define WHOIS_RECURSE 0x01
70 #define WHOIS_QUICK 0x02
72 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-')
74 const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, NULL };
76 static char *choose_server(char *);
77 static struct addrinfo *gethostinfo(char const *host, int exit_on_error);
78 static void s_asprintf(char **ret, const char *format, ...);
79 static void usage(void);
80 static void whois(const char *, const char *, int);
83 main(int argc, char *argv[])
85 const char *country, *host;
87 int ch, flags, use_qnichost;
93 country = host = qnichost = NULL;
94 flags = use_qnichost = 0;
95 while ((ch = getopt(argc, argv, "ac:dgh:ilmpQrR6")) != -1) {
125 flags |= WHOIS_QUICK;
145 if (!argc || (country != NULL && host != NULL))
149 * If no host or country is specified determine the top level domain
150 * from the query. If the TLD is a number, query ARIN. Otherwise, use
151 * TLD.whois-server.net. If the domain does not contain '.', fall
154 if (host == NULL && country == NULL) {
157 if (!(flags & WHOIS_QUICK))
158 flags |= WHOIS_RECURSE;
161 if (country != NULL) {
162 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL);
163 whois(*argv, qnichost, flags);
164 } else if (use_qnichost)
165 if ((qnichost = choose_server(*argv)) != NULL)
166 whois(*argv, qnichost, flags);
167 if (qnichost == NULL)
168 whois(*argv, host, flags);
177 * This function will remove any trailing periods from domain, after which it
178 * returns a pointer to newly allocated memory containing the whois server to
179 * be queried, or a NULL if the correct server couldn't be determined. The
180 * caller must remember to free(3) the allocated memory.
183 choose_server(char *domain)
187 for (pos = strchr(domain, '\0'); pos > domain && *--pos == '.';)
190 errx(EX_USAGE, "can't search for a null string");
191 while (pos > domain && *pos != '.')
195 if (isdigit((unsigned char)*++pos))
196 s_asprintf(&retval, "%s", ANICHOST);
198 s_asprintf(&retval, "%s%s", pos, QNICHOST_TAIL);
202 static struct addrinfo *
203 gethostinfo(char const *host, int exit_on_error)
205 struct addrinfo hints, *res;
208 memset(&hints, 0, sizeof(hints));
210 hints.ai_family = AF_UNSPEC;
211 hints.ai_socktype = SOCK_STREAM;
212 error = getaddrinfo(host, "whois", &hints, &res);
214 warnx("%s: %s", host, gai_strerror(error));
223 * Wrapper for asprintf(3) that exits on error.
226 s_asprintf(char **ret, const char *format, ...)
230 va_start(ap, format);
231 if (vasprintf(ret, format, ap) == -1) {
233 err(EX_OSERR, "vasprintf()");
239 whois(const char *query, const char *hostname, int flags)
242 struct addrinfo *hostres, *res;
243 char *buf, *host, *nhost, *p;
247 hostres = gethostinfo(hostname, 1);
248 for (res = hostres; res; res = res->ai_next) {
249 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
252 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
256 freeaddrinfo(hostres);
258 err(EX_OSERR, "connect()");
260 sfi = fdopen(s, "r");
261 sfo = fdopen(s, "w");
262 if (sfi == NULL || sfo == NULL)
263 err(EX_OSERR, "fdopen()");
264 fprintf(sfo, "%s\r\n", query);
267 while ((buf = fgetln(sfi, &len)) != NULL) {
268 while (len > 0 && isspace((unsigned char)buf[len - 1]))
270 printf("%.*s\n", (int)len, buf);
272 if ((flags & WHOIS_RECURSE) && nhost == NULL) {
273 host = strnstr(buf, WHOIS_SERVER_ID, len);
275 host += sizeof(WHOIS_SERVER_ID) - 1;
276 for (p = host; p < buf + len; p++) {
282 s_asprintf(&nhost, "%.*s",
283 (int)(buf + len - host), host);
285 strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) {
286 host += sizeof(WHOIS_ORG_SERVER_ID) - 1;
287 for (p = host; p < buf + len; p++) {
293 s_asprintf(&nhost, "%.*s",
294 (int)(buf + len - host), host);
295 } else if (strcmp(hostname, ANICHOST) == 0) {
296 for (c = 0; c <= len; c++)
297 buf[c] = tolower((int)buf[c]);
298 for (i = 0; ip_whois[i] != NULL; i++) {
299 if (strnstr(buf, ip_whois[i], len) !=
301 s_asprintf(&nhost, "%s",
310 whois(query, nhost, 0);
319 "usage: whois [-adgilmpQrR6] [-c country-code | -h hostname] "