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 DENICHOST "whois.denic.de"
65 #define DKNICHOST "whois.dk-hostmaster.dk"
66 #define FNICHOST "whois.afrinic.net"
67 #define GNICHOST "whois.nic.gov"
68 #define IANAHOST "whois.iana.org"
69 #define INICHOST "whois.internic.net"
70 #define KNICHOST "whois.krnic.net"
71 #define LNICHOST "whois.lacnic.net"
72 #define MNICHOST "whois.ra.net"
73 #define PDBHOST "whois.peeringdb.com"
74 #define PNICHOST "whois.apnic.net"
75 #define QNICHOST_TAIL ".whois-servers.net"
76 #define RNICHOST "whois.ripe.net"
77 #define VNICHOST "whois.verisign-grs.com"
79 #define DEFAULT_PORT "whois"
81 #define WHOIS_RECURSE 0x01
82 #define WHOIS_QUICK 0x02
83 #define WHOIS_SPAM_ME 0x04
85 #define CHOPSPAM ">>> Last update of WHOIS database:"
87 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-')
89 #define SCAN(p, end, check) \
95 const char *suffix, *server;
98 { "-ARIN", ANICHOST },
99 { "-NICAT", "at" QNICHOST_TAIL },
100 { "-NORID", "no" QNICHOST_TAIL },
101 { "-RIPE", RNICHOST },
102 /* Nominet's whois server doesn't return referrals to JANET */
103 { ".ac.uk", "ac.uk" QNICHOST_TAIL },
104 { ".gov.uk", "ac.uk" QNICHOST_TAIL },
105 { "", IANAHOST }, /* default */
106 { NULL, NULL } /* safety belt */
109 #define WHOIS_REFERRAL(s) { s, sizeof(s) - 1 }
113 } whois_referral[] = {
114 WHOIS_REFERRAL("whois:"), /* IANA */
115 WHOIS_REFERRAL("Whois Server:"),
116 WHOIS_REFERRAL("Registrar WHOIS Server:"), /* corporatedomains.com */
117 WHOIS_REFERRAL("ReferralServer: whois://"), /* ARIN */
118 WHOIS_REFERRAL("descr: region. Please query"), /* AfriNIC */
123 * We have a list of patterns for RIRs that assert ignorance rather than
124 * providing referrals. If that happens, we guess that ARIN will be more
125 * helpful. But, before following a referral to an RIR, we check if we have
126 * asked that RIR already, and if so we make another guess.
128 static const char *actually_arin[] = {
129 "netname: ERX-NETBLOCK\n", /* APNIC */
130 "netname: NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK\n",
150 for (i = 0; try_rir[i].host != NULL; i++)
154 static const char *port = DEFAULT_PORT;
156 static const char *choose_server(char *);
157 static struct addrinfo *gethostinfo(char const *host, int exitnoname);
158 static void s_asprintf(char **ret, const char *format, ...) __printflike(2, 3);
159 static void usage(void);
160 static void whois(const char *, const char *, int);
163 main(int argc, char *argv[])
165 const char *country, *host;
172 country = host = NULL;
174 while ((ch = getopt(argc, argv, "aAbc:fgh:iIklmp:PQrRS")) != -1) {
219 flags |= WHOIS_QUICK;
225 flags |= WHOIS_RECURSE;
228 flags |= WHOIS_SPAM_ME;
239 if (!argc || (country != NULL && host != NULL))
243 * If no host or country is specified, rely on referrals from IANA.
245 if (host == NULL && country == NULL) {
246 if ((host = getenv("WHOIS_SERVER")) == NULL &&
247 (host = getenv("RA_SERVER")) == NULL) {
248 if (!(flags & WHOIS_QUICK))
249 flags |= WHOIS_RECURSE;
253 if (country != NULL) {
255 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL);
256 whois(*argv, qnichost, flags);
259 whois(*argv, host != NULL ? host :
260 choose_server(*argv), flags);
268 choose_server(char *domain)
270 size_t len = strlen(domain);
273 for (i = 0; whoiswhere[i].suffix != NULL; i++) {
274 size_t suffix_len = strlen(whoiswhere[i].suffix);
275 if (len > suffix_len &&
276 strcasecmp(domain + len - suffix_len,
277 whoiswhere[i].suffix) == 0)
278 return (whoiswhere[i].server);
280 errx(EX_SOFTWARE, "no default whois server");
283 static struct addrinfo *
284 gethostinfo(char const *host, int exit_on_noname)
286 struct addrinfo hints, *res;
289 memset(&hints, 0, sizeof(hints));
290 hints.ai_flags = AI_CANONNAME;
291 hints.ai_family = AF_UNSPEC;
292 hints.ai_socktype = SOCK_STREAM;
294 error = getaddrinfo(host, port, &hints, &res);
295 if (error && (exit_on_noname || error != EAI_NONAME))
296 err(EX_NOHOST, "%s: %s", host, gai_strerror(error));
301 * Wrapper for asprintf(3) that exits on error.
304 s_asprintf(char **ret, const char *format, ...)
308 va_start(ap, format);
309 if (vasprintf(ret, format, ap) == -1) {
311 err(EX_OSERR, "vasprintf()");
317 connect_to_any_host(struct addrinfo *hostres)
319 struct addrinfo *res;
323 int timeout = 180, s = -1;
325 for (res = hostres, count = 0; res; res = res->ai_next)
327 fds = calloc(count, sizeof(*fds));
329 err(EX_OSERR, "calloc()");
332 * Traverse the result list elements and make non-block
333 * connection attempts.
336 for (res = hostres; res != NULL; res = res->ai_next) {
337 s = socket(res->ai_family, res->ai_socktype | SOCK_NONBLOCK,
341 if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
342 if (errno == EINPROGRESS) {
343 /* Add the socket to poll list */
345 fds[i].events = POLLERR | POLLHUP |
348 * From here until a socket connects, the
349 * socket fd is owned by the fds[] poll array.
359 * Poll only if we have something to poll,
360 * otherwise just go ahead and try next
370 * If we are at the last address, poll until a connection is
371 * established or we failed all connection attempts.
373 if (res->ai_next == NULL)
377 * Poll the watched descriptors for successful connections:
378 * if we still have more untried resolved addresses, poll only
379 * once; otherwise, poll until all descriptors have errors,
380 * which will be considered as ETIMEDOUT later.
385 n = poll(fds, i, timeout);
388 * No event reported in time. Try with a
389 * smaller timeout (but cap at 2-3ms)
390 * after a new host have been added.
398 * errno here can only be EINTR which we would
399 * want to clean up and bail out.
406 * Check for the event(s) we have seen.
408 for (j = 0; j < i; j++) {
409 if (fds[j].fd == -1 || fds[j].events == 0 ||
412 if (fds[j].revents & ~(POLLIN | POLLOUT)) {
418 } else if (fds[j].revents & (POLLIN | POLLOUT)) {
419 /* Connect succeeded. */
427 } while (timeout == INFTIM && count != 0);
430 /* All attempts were failed */
436 /* Close all watched fds except the succeeded one */
437 for (j = 0; j < i; j++)
445 whois(const char *query, const char *hostname, int flags)
448 struct addrinfo *hostres;
449 char *buf, *host, *nhost, *p;
453 hostres = gethostinfo(hostname, 1);
454 s = connect_to_any_host(hostres);
456 err(EX_OSERR, "connect()");
458 /* Restore default blocking behavior. */
459 if ((f = fcntl(s, F_GETFL)) == -1)
460 err(EX_OSERR, "fcntl()");
462 if (fcntl(s, F_SETFL, f) == -1)
463 err(EX_OSERR, "fcntl()");
465 fp = fdopen(s, "r+");
467 err(EX_OSERR, "fdopen()");
469 if (!(flags & WHOIS_SPAM_ME) &&
470 (strcasecmp(hostname, DENICHOST) == 0 ||
471 strcasecmp(hostname, "de" QNICHOST_TAIL) == 0)) {
474 for (q = query; *q != '\0'; q++)
477 fprintf(fp, "-T dn%s %s\r\n", idn ? "" : ",ace", query);
478 } else if (!(flags & WHOIS_SPAM_ME) &&
479 (strcasecmp(hostname, DKNICHOST) == 0 ||
480 strcasecmp(hostname, "dk" QNICHOST_TAIL) == 0))
481 fprintf(fp, "--show-handles %s\r\n", query);
482 else if ((flags & WHOIS_SPAM_ME) ||
483 strchr(query, ' ') != NULL)
484 fprintf(fp, "%s\r\n", query);
485 else if (strcasecmp(hostname, ANICHOST) == 0) {
486 if (strncasecmp(query, "AS", 2) == 0 &&
487 strspn(query+2, "0123456789") == strlen(query+2))
488 fprintf(fp, "+ a %s\r\n", query+2);
490 fprintf(fp, "+ %s\r\n", query);
491 } else if (strcasecmp(hostres->ai_canonname, VNICHOST) == 0)
492 fprintf(fp, "domain %s\r\n", query);
494 fprintf(fp, "%s\r\n", query);
498 if (!(flags & WHOIS_SPAM_ME) &&
499 (strcasecmp(hostname, ANICHOST) == 0 ||
500 strcasecmp(hostname, RNICHOST) == 0)) {
505 while ((buf = fgetln(fp, &len)) != NULL) {
507 if (!(flags & WHOIS_SPAM_ME) &&
508 len == 5 && strncmp(buf, "-- \r\n", 5) == 0)
511 if (comment == 1 && buf[0] == '#')
513 else if (comment == 2) {
514 if (strchr("#%\r\n", buf[0]) != NULL)
520 printf("%.*s", (int)len, buf);
522 if ((flags & WHOIS_RECURSE) && nhost == NULL) {
523 for (i = 0; whois_referral[i].prefix != NULL; i++) {
525 SCAN(p, buf+len, *p == ' ');
526 if (strncasecmp(p, whois_referral[i].prefix,
527 whois_referral[i].len) != 0)
529 p += whois_referral[i].len;
530 SCAN(p, buf+len, *p == ' ');
532 SCAN(p, buf+len, ishost(*p));
534 s_asprintf(&nhost, "%.*s",
535 (int)(p - host), host);
538 for (i = 0; actually_arin[i] != NULL; i++) {
539 if (strncmp(buf, actually_arin[i], len) == 0) {
540 s_asprintf(&nhost, "%s", ANICHOST);
546 if (!(flags & WHOIS_SPAM_ME) &&
547 len >= sizeof(CHOPSPAM)-1 &&
548 (strncasecmp(buf, CHOPSPAM, sizeof(CHOPSPAM)-1) == 0 ||
549 strncasecmp(buf, CHOPSPAM+4, sizeof(CHOPSPAM)-5) == 0)) {
555 freeaddrinfo(hostres);
558 for (i = 0; try_rir[i].host != NULL; i++) {
559 /* Remember visits to RIRs */
560 if (try_rir[i].loop == 0 &&
561 strcasecmp(try_rir[i].host, hostname) == 0)
563 /* Do we need to find an alternative RIR? */
564 if (try_rir[i].loop != 0 && nhost != NULL &&
565 strcasecmp(try_rir[i].host, nhost) == 0) {
572 /* Find a replacement RIR */
573 for (i = 0; try_rir[i].host != NULL; i++) {
574 if (try_rir[i].loop == 0) {
575 s_asprintf(&nhost, "%s",
582 /* Ignore self-referrals */
583 if (strcasecmp(hostname, nhost) != 0) {
584 printf("# %s\n\n", nhost);
585 whois(query, nhost, flags);
595 "usage: whois [-aAbfgiIklmPQrRS] [-c country-code | -h hostname] "
596 "[-p port] name ...\n");