1 /* $NetBSD: whois.c,v 1.38 2020/03/01 02:26:16 sevan Exp $ */ 2 /* $OpenBSD: whois.c,v 1.58 2018/06/19 11:28:11 jca Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 35 #ifndef lint 36 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\ 37 The Regents of the University of California. All rights reserved."); 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static const char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; 43 #else 44 __RCSID("$NetBSD: whois.c,v 1.38 2020/03/01 02:26:16 sevan Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/socket.h> 50 51 #include <netinet/in.h> 52 #include <arpa/inet.h> 53 #include <netdb.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 #include <errno.h> 62 63 #define ANICHOST "whois.arin.net" 64 #define BNICHOST "whois.registro.br" 65 #define CNICHOST "whois.corenic.net" 66 #define DNICHOST "whois.nic.mil" 67 #define FNICHOST "whois.afrinic.net" 68 #define GNICHOST "whois.nic.gov" 69 #define IANAHOST "whois.iana.org" 70 #define INICHOST "whois.networksolutions.com" 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_TAIL ".whois-servers.net" 77 #define RNICHOST "whois.ripe.net" 78 #define RUNICHOST "whois.ripn.net" 79 80 #define WHOIS_PORT "whois" 81 #define WHOIS_SERVER_ID "Registrar WHOIS Server:" 82 83 #define WHOIS_RECURSE 0x01 84 #define WHOIS_QUICK 0x02 85 86 static const char *port_whois = WHOIS_PORT; 87 static const char *ip_whois[] = 88 { LNICHOST, RNICHOST, PNICHOST, FNICHOST, BNICHOST, NULL }; 89 90 static void usage(void) __dead; 91 static int whois(const char *, const char *, const char *, int); 92 static const char *choose_server(const char *, const char *, char **); 93 94 int 95 main(int argc, char *argv[]) 96 { 97 int ch, flags, rval; 98 const char *host, *name, *country; 99 100 country = host = NULL; 101 flags = rval = 0; 102 while ((ch = getopt(argc, argv, "Aac:dfgh:Iilmp:PqQRr")) != -1) 103 switch (ch) { 104 case 'a': 105 host = ANICHOST; 106 break; 107 case 'A': 108 host = PNICHOST; 109 break; 110 case 'c': 111 country = optarg; 112 break; 113 case 'd': 114 host = DNICHOST; 115 break; 116 case 'f': 117 host = FNICHOST; 118 break; 119 case 'g': 120 host = GNICHOST; 121 break; 122 case 'h': 123 host = optarg; 124 break; 125 case 'i': 126 host = INICHOST; 127 break; 128 case 'I': 129 host = IANAHOST; 130 break; 131 case 'l': 132 host = LNICHOST; 133 break; 134 case 'm': 135 host = MNICHOST; 136 break; 137 case 'p': 138 port_whois = optarg; 139 break; 140 case 'P': 141 host = PDBHOST; 142 break; 143 case 'q': 144 /* deprecated, now the default */ 145 break; 146 case 'Q': 147 flags |= WHOIS_QUICK; 148 break; 149 case 'r': 150 host = RNICHOST; 151 break; 152 case 'R': 153 host = RUNICHOST; 154 break; 155 default: 156 usage(); 157 } 158 argc -= optind; 159 argv += optind; 160 161 if (!argc || (country != NULL && host != NULL)) 162 usage(); 163 164 if (host == NULL && country == NULL && !(flags & WHOIS_QUICK)) 165 flags |= WHOIS_RECURSE; 166 for (name = *argv; (name = *argv) != NULL; argv++) { 167 char *tofree = NULL; 168 const char *server = 169 host ? host : choose_server(name, country, &tofree); 170 rval += whois(name, server, port_whois, flags); 171 free(tofree); 172 } 173 return (rval); 174 } 175 176 static int 177 whois(const char *query, const char *server, const char *port, int flags) 178 { 179 FILE *fp; 180 char *buf, *p, *nhost, *nbuf = NULL; 181 size_t len; 182 int i, s, error; 183 const char *reason = NULL, *fmt; 184 struct addrinfo hints, *res, *ai; 185 186 (void)memset(&hints, 0, sizeof(hints)); 187 hints.ai_flags = 0; 188 hints.ai_family = AF_UNSPEC; 189 hints.ai_socktype = SOCK_STREAM; 190 error = getaddrinfo(server, port, &hints, &res); 191 if (error) { 192 if (error == EAI_SERVICE) 193 warnx("%s: bad port", port); 194 else 195 warnx("%s: %s", server, gai_strerror(error)); 196 return (1); 197 } 198 199 for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) { 200 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); 201 if (s < 0) { 202 error = errno; 203 reason = "socket"; 204 continue; 205 } 206 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) { 207 error = errno; 208 reason = "connect"; 209 close(s); 210 s = -1; 211 continue; 212 } 213 break; /*okay*/ 214 } 215 freeaddrinfo(res); 216 if (s < 0) { 217 if (reason) { 218 errno = error; 219 warn("%s: %s", server, reason); 220 } else 221 warnx("Unknown error in connection attempt"); 222 return (1); 223 } 224 225 if (strcmp(server, "whois.denic.de") == 0 || 226 strcmp(server, "de" QNICHOST_TAIL) == 0) 227 fmt = "-T dn,ace -C ISO-8859-1 "; 228 else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 || 229 strcmp(server, "dk" QNICHOST_TAIL) == 0) 230 fmt = "--show-handles "; 231 else 232 fmt = ""; 233 234 fp = fdopen(s, "r+"); 235 if (fp == NULL) 236 err(1, "fdopen"); 237 (void)fprintf(fp, "%s%s\r\n", fmt, query); 238 (void)fflush(fp); 239 nhost = NULL; 240 while ((buf = fgetln(fp, &len)) != NULL) { 241 p = buf + len - 1; 242 if (isspace((unsigned char)*p)) { 243 do 244 *p = '\0'; 245 while (p > buf && isspace((unsigned char)*--p)); 246 } else { 247 if ((nbuf = malloc(len + 1)) == NULL) 248 err(1, "malloc"); 249 (void)memcpy(nbuf, buf, len); 250 nbuf[len] = '\0'; 251 buf = nbuf; 252 } 253 (void)puts(buf); 254 255 if (nhost != NULL || !(flags & WHOIS_RECURSE)) 256 continue; 257 258 if ((p = strstr(buf, WHOIS_SERVER_ID))) { 259 p += sizeof(WHOIS_SERVER_ID) - 1; 260 while (isblank((unsigned char)*p)) 261 p++; 262 if ((len = strcspn(p, " \t\n\r"))) { 263 if ((nhost = malloc(len + 1)) == NULL) 264 err(1, "malloc"); 265 (void)memcpy(nhost, p, len); 266 nhost[len] = '\0'; 267 } 268 } else if (strcmp(server, ANICHOST) == 0) { 269 for (p = buf; *p != '\0'; p++) 270 *p = tolower((unsigned char)*p); 271 for (i = 0; ip_whois[i] != NULL; i++) { 272 if (strstr(buf, ip_whois[i]) != NULL) { 273 nhost = strdup(ip_whois[i]); 274 if (nhost == NULL) 275 err(1, "strdup"); 276 break; 277 } 278 } 279 } 280 } 281 fclose(fp); 282 free(nbuf); 283 284 if (nhost != NULL) { 285 error = whois(query, nhost, port, 0); 286 free(nhost); 287 } 288 289 return (error); 290 } 291 292 /* 293 * If no country is specified determine the top level domain from the query. 294 * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net. 295 * If the domain does not contain '.', check to see if it is an NSI handle 296 * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an 297 * ASN (starts with AS) or IPv6 address (contains ':'). Fall back to 298 * NICHOST for the non-handle and non-IPv6 case. 299 */ 300 static const char * 301 choose_server(const char *name, const char *country, char **tofree) 302 { 303 static char *server; 304 const char *qhead; 305 char *ep; 306 struct addrinfo hints, *res = NULL; 307 308 (void)memset(&hints, 0, sizeof(hints)); 309 hints.ai_flags = 0; 310 hints.ai_family = AF_UNSPEC; 311 hints.ai_socktype = SOCK_STREAM; 312 313 if (country != NULL) 314 qhead = country; 315 else if ((qhead = strrchr(name, '.')) == NULL) { 316 if (*name == '!') 317 return (INICHOST); 318 else if ((strncasecmp(name, "COCO-", 5) == 0 || 319 strncasecmp(name, "COHO-", 5) == 0) && 320 strtol(name + 5, &ep, 10) > 0 && *ep == '\0') 321 return (CNICHOST); 322 else if ((strncasecmp(name, "AS", 2) == 0) && 323 strtol(name + 2, &ep, 10) > 0 && *ep == '\0') 324 return (MNICHOST); 325 else if (strchr(name, ':') != NULL) /* IPv6 address */ 326 return (ANICHOST); 327 else 328 return (NICHOST); 329 } else if (isdigit((unsigned char)*(++qhead))) 330 return (ANICHOST); 331 332 /* 333 * Post-2003 ("new") gTLDs are all supposed to have "whois.nic.domain" 334 * (per registry agreement), some older gTLDs also support this... 335 */ 336 if (asprintf(&server, "whois.nic.%s", qhead) == -1) 337 err(1, NULL); 338 339 /* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */ 340 if ((strlen(qhead) == 2 || 341 /* and is required for most of the <=2003 TLDs/gTLDs */ 342 strcasecmp(qhead, "org") == 0 || 343 strcasecmp(qhead, "com") == 0 || 344 strcasecmp(qhead, "net") == 0 || 345 strcasecmp(qhead, "cat") == 0 || 346 strcasecmp(qhead, "pro") == 0 || 347 strcasecmp(qhead, "info") == 0 || 348 strcasecmp(qhead, "aero") == 0 || 349 strcasecmp(qhead, "jobs") == 0 || 350 strcasecmp(qhead, "mobi") == 0 || 351 strcasecmp(qhead, "museum") == 0 || 352 /* for others, if whois.nic.TLD doesn't exist, try whois-servers */ 353 getaddrinfo(server, NULL, &hints, &res) != 0)) { 354 free(server); 355 if (asprintf(&server, "%s%s", qhead, QNICHOST_TAIL) == -1) 356 err(1, NULL); 357 } 358 if (res != NULL) 359 freeaddrinfo(res); 360 361 *tofree = server; 362 return (server); 363 } 364 365 static void 366 usage(void) 367 { 368 (void)fprintf(stderr, 369 "usage: %s [-AadfgIilmPQRr] [-c country-code | -h host] " 370 "[-p port] name ...\n", getprogname()); 371 exit(1); 372 } 373
Indexes created Wed Oct 01 19:09:53 GMT 2025