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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1980, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/types.h>
46 #include <sys/socket.h>
48 #include <netinet/in.h>
49 #include <arpa/inet.h>
62 #define ABUSEHOST "whois.abuse.net"
63 #define ANICHOST "whois.arin.net"
64 #define BNICHOST "whois.registro.br"
65 #define FNICHOST "whois.afrinic.net"
66 #define GERMNICHOST "de.whois-servers.net"
67 #define GNICHOST "whois.nic.gov"
68 #define IANAHOST "whois.iana.org"
69 #define INICHOST "whois.networksolutions.com"
70 #define KNICHOST "whois.krnic.net"
71 #define LNICHOST "whois.lacnic.net"
72 #define MNICHOST "whois.ra.net"
73 #define NICHOST "whois.crsnic.net"
74 #define PDBHOST "whois.peeringdb.com"
75 #define PNICHOST "whois.apnic.net"
76 #define QNICHOST_HEAD "whois.nic."
77 #define QNICHOST_TAIL ".whois-servers.net"
78 #define RNICHOST "whois.ripe.net"
80 #define DEFAULT_PORT "whois"
82 #define WHOIS_SERVER_ID "Whois Server: "
83 #define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:"
85 #define WHOIS_RECURSE 0x01
86 #define WHOIS_QUICK 0x02
88 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-')
91 const char *suffix, *server;
94 { "-ARIN", ANICHOST },
95 { "-NICAT", "at" QNICHOST_TAIL },
96 { "-NORID", "no" QNICHOST_TAIL },
97 { "-RIPE", RNICHOST },
98 /* Nominet's whois server doesn't return referrals to JANET */
99 { ".ac.uk", "ac.uk" QNICHOST_TAIL },
103 static const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
105 static const char *port = DEFAULT_PORT;
107 static char *choose_server(char *);
108 static struct addrinfo *gethostinfo(char const *host, int exitnoname);
109 static void s_asprintf(char **ret, const char *format, ...) __printflike(2, 3);
110 static void usage(void);
111 static void whois(const char *, const char *, int);
114 main(int argc, char *argv[])
116 const char *country, *host;
118 int ch, flags, use_qnichost;
124 country = host = qnichost = NULL;
125 flags = use_qnichost = 0;
126 while ((ch = getopt(argc, argv, "aAbc:fgh:iIklmp:PQr")) != -1) {
171 flags |= WHOIS_QUICK;
185 if (!argc || (country != NULL && host != NULL))
189 * If no host or country is specified, try to determine the top
190 * level domain from the query, or fall back to NICHOST.
192 if (host == NULL && country == NULL) {
193 if ((host = getenv("WHOIS_SERVER")) == NULL &&
194 (host = getenv("RA_SERVER")) == NULL) {
197 if (!(flags & WHOIS_QUICK))
198 flags |= WHOIS_RECURSE;
202 if (country != NULL) {
203 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL);
204 whois(*argv, qnichost, flags);
205 } else if (use_qnichost)
206 if ((qnichost = choose_server(*argv)) != NULL)
207 whois(*argv, qnichost, flags);
208 if (qnichost == NULL)
209 whois(*argv, host, flags);
218 * This function will remove any trailing periods from domain, after which it
219 * returns a pointer to newly allocated memory containing the whois server to
220 * be queried, or a NULL if the correct server couldn't be determined. The
221 * caller must remember to free(3) the allocated memory.
223 * If the domain is an IPv6 address or has a known suffix, that determines
224 * the server, else if the TLD is a number, query ARIN, else try a couple of
225 * formulaic server names. Fail if the domain does not contain '.'.
228 choose_server(char *domain)
232 struct addrinfo *res;
234 if (strchr(domain, ':')) {
235 s_asprintf(&retval, "%s", ANICHOST);
238 for (pos = strchr(domain, '\0'); pos > domain && pos[-1] == '.';)
241 errx(EX_USAGE, "can't search for a null string");
242 for (i = 0; whoiswhere[i].suffix != NULL; i++) {
243 size_t suffix_len = strlen(whoiswhere[i].suffix);
244 if (domain + suffix_len < pos &&
245 strcasecmp(pos - suffix_len, whoiswhere[i].suffix) == 0) {
246 s_asprintf(&retval, "%s", whoiswhere[i].server);
250 while (pos > domain && *pos != '.')
254 if (isdigit((unsigned char)*++pos)) {
255 s_asprintf(&retval, "%s", ANICHOST);
258 /* Try possible alternative whois server name formulae. */
262 s_asprintf(&retval, "%s%s", pos, QNICHOST_TAIL);
265 s_asprintf(&retval, "%s%s", QNICHOST_HEAD, pos);
270 res = gethostinfo(retval, 0);
281 static struct addrinfo *
282 gethostinfo(char const *host, int exit_on_noname)
284 struct addrinfo hints, *res;
287 memset(&hints, 0, sizeof(hints));
289 hints.ai_family = AF_UNSPEC;
290 hints.ai_socktype = SOCK_STREAM;
292 error = getaddrinfo(host, port, &hints, &res);
293 if (error && (exit_on_noname || error != EAI_NONAME))
294 err(EX_NOHOST, "%s: %s", host, gai_strerror(error));
299 * Wrapper for asprintf(3) that exits on error.
302 s_asprintf(char **ret, const char *format, ...)
306 va_start(ap, format);
307 if (vasprintf(ret, format, ap) == -1) {
309 err(EX_OSERR, "vasprintf()");
315 whois(const char *query, const char *hostname, int flags)
318 struct addrinfo *hostres, *res;
319 char *buf, *host, *nhost, *p;
322 size_t c, len, count;
326 hostres = gethostinfo(hostname, 1);
327 for (res = hostres, count = 0; res; res = res->ai_next)
330 fds = calloc(count, sizeof(*fds));
332 err(EX_OSERR, "calloc()");
335 * Traverse the result list elements and make non-block
336 * connection attempts.
339 for (res = hostres; res != NULL; res = res->ai_next) {
340 s = socket(res->ai_family, res->ai_socktype | SOCK_NONBLOCK,
344 if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
345 if (errno == EINPROGRESS) {
346 /* Add the socket to poll list */
348 fds[i].events = POLLERR | POLLHUP |
357 * Poll only if we have something to poll,
358 * otherwise just go ahead and try next
368 * If we are at the last address, poll until a connection is
369 * established or we failed all connection attempts.
371 if (res->ai_next == NULL)
375 * Poll the watched descriptors for successful connections:
376 * if we still have more untried resolved addresses, poll only
377 * once; otherwise, poll until all descriptors have errors,
378 * which will be considered as ETIMEDOUT later.
383 n = poll(fds, i, timeout);
386 * No event reported in time. Try with a
387 * smaller timeout (but cap at 2-3ms)
388 * after a new host have been added.
396 * errno here can only be EINTR which we would want
397 * to clean up and bail out.
404 * Check for the event(s) we have seen.
406 for (j = 0; j < i; j++) {
407 if (fds[j].fd == -1 || fds[j].events == 0 ||
410 if (fds[j].revents & ~(POLLIN | POLLOUT)) {
416 } else if (fds[j].revents & (POLLIN | POLLOUT)) {
417 /* Connect succeeded. */
424 } while (timeout == INFTIM && count != 0);
427 /* All attempts were failed */
433 /* Close all watched fds except the succeeded one */
434 for (j = 0; j < i; j++)
435 if (fds[j].fd != s && fds[j].fd != -1)
439 /* Restore default blocking behavior. */
440 if ((f = fcntl(s, F_GETFL)) != -1) {
442 if (fcntl(s, F_SETFL, f) == -1)
443 err(EX_OSERR, "fcntl()");
445 err(EX_OSERR, "fcntl()");
449 freeaddrinfo(hostres);
451 err(EX_OSERR, "connect()");
453 fp = fdopen(s, "r+");
455 err(EX_OSERR, "fdopen()");
456 if (strcmp(hostname, GERMNICHOST) == 0) {
457 fprintf(fp, "-T dn,ace -C ISO-8859-1 %s\r\n", query);
458 } else if (strcmp(hostname, "dk" QNICHOST_TAIL) == 0) {
459 fprintf(fp, "--show-handles %s\r\n", query);
461 fprintf(fp, "%s\r\n", query);
465 while ((buf = fgetln(fp, &len)) != NULL) {
466 while (len > 0 && isspace((unsigned char)buf[len - 1]))
468 printf("%.*s\n", (int)len, buf);
470 if ((flags & WHOIS_RECURSE) && nhost == NULL) {
471 host = strnstr(buf, WHOIS_SERVER_ID, len);
473 host += sizeof(WHOIS_SERVER_ID) - 1;
474 for (p = host; p < buf + len; p++) {
480 s_asprintf(&nhost, "%.*s",
481 (int)(buf + len - host), host);
483 strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) {
484 host += sizeof(WHOIS_ORG_SERVER_ID) - 1;
485 for (p = host; p < buf + len; p++) {
491 s_asprintf(&nhost, "%.*s",
492 (int)(buf + len - host), host);
493 } else if (strcmp(hostname, ANICHOST) == 0) {
494 for (c = 0; c <= len; c++)
495 buf[c] = tolower((unsigned char)buf[c]);
496 for (i = 0; ip_whois[i] != NULL; i++) {
497 if (strnstr(buf, ip_whois[i], len) !=
499 s_asprintf(&nhost, "%s",
509 whois(query, nhost, 0);
518 "usage: whois [-aAbfgiIklmPQr] [-c country-code | -h hostname] "
519 "[-p port] name ...\n");