1 /* $NetBSD: whois.c,v 1.36 2013/02/20 09:27:52 ws Exp $ */ 2 /* $OpenBSD: whois.c,v 1.28 2003/09/18 22:16:15 fgsch 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 1.36 2013/02/20 09:27:52 ws 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 INICHOST "whois.networksolutions.com" 70 #define LNICHOST "whois.lacnic.net" 71 #define MNICHOST "whois.ra.net" 72 #define NICHOST "whois.crsnic.net" 73 #define PNICHOST "whois.apnic.net" 74 #define QNICHOST_TAIL ".whois-servers.net" 75 #define RNICHOST "whois.ripe.net" 76 #define RUNICHOST "whois.ripn.net" 77 #define SNICHOST "whois.6bone.net" 78 79 #define WHOIS_PORT "whois" 80 #define WHOIS_SERVER_ID "Whois Server:" 81 82 #define WHOIS_RECURSE 0x01 83 #define WHOIS_QUICK 0x02 84 85 static const char *port_whois = WHOIS_PORT; 86 static const char *ip_whois[] = 87 { LNICHOST, RNICHOST, PNICHOST, FNICHOST, BNICHOST, NULL }; 88 89 static void usage(void) __dead; 90 static int whois(const char *, const char *, const char *, int); 91 static const char *choose_server(const char *, const char *); 92 93 int 94 main(int argc, char *argv[]) 95 { 96 int ch, flags, rval; 97 const char *host, *name, *country; 98 99 #ifdef SOCKS 100 SOCKSinit(argv[0]); 101 #endif 102 country = host = NULL; 103 flags = rval = 0; 104 while ((ch = getopt(argc, argv, "6Aac:dfgh:ilmp:qQRr")) != -1) 105 switch(ch) { 106 case 'a': 107 host = ANICHOST; 108 break; 109 case 'A': 110 host = PNICHOST; 111 break; 112 case 'c': 113 country = optarg; 114 break; 115 case 'd': 116 host = DNICHOST; 117 break; 118 case 'f': 119 host = FNICHOST; 120 break; 121 case 'g': 122 host = GNICHOST; 123 break; 124 case 'h': 125 host = optarg; 126 break; 127 case 'i': 128 host = INICHOST; 129 break; 130 case 'l': 131 host = LNICHOST; 132 break; 133 case 'm': 134 host = MNICHOST; 135 break; 136 case 'p': 137 port_whois = optarg; 138 break; 139 case 'q': 140 /* deprecated, now the default */ 141 break; 142 case 'Q': 143 flags |= WHOIS_QUICK; 144 break; 145 case 'r': 146 host = RNICHOST; 147 break; 148 case 'R': 149 host = RUNICHOST; 150 break; 151 case '6': 152 host = SNICHOST; 153 break; 154 default: 155 usage(); 156 } 157 argc -= optind; 158 argv += optind; 159 160 if (!argc || (country != NULL && host != NULL)) 161 usage(); 162 163 if (host == NULL && country == NULL && !(flags & WHOIS_QUICK)) 164 flags |= WHOIS_RECURSE; 165 for (name = *argv; (name = *argv) != NULL; argv++) 166 rval += whois(name, host ? host : choose_server(name, country), 167 port_whois, flags); 168 return rval; 169 } 170 171 static int 172 whois(const char *query, const char *server, const char *port, int flags) 173 { 174 FILE *sfi, *sfo; 175 char *buf, *p, *nhost, *nbuf = NULL; 176 size_t len; 177 int i, s, error; 178 const char *reason = NULL, *fmt; 179 struct addrinfo hints, *res, *ai; 180 181 (void)memset(&hints, 0, sizeof(hints)); 182 hints.ai_flags = 0; 183 hints.ai_family = AF_UNSPEC; 184 hints.ai_socktype = SOCK_STREAM; 185 error = getaddrinfo(server, port, &hints, &res); 186 if (error) { 187 warnx("%s: %s", server, gai_strerror(error)); 188 return (1); 189 } 190 191 for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) { 192 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); 193 if (s < 0) { 194 error = errno; 195 reason = "socket"; 196 continue; 197 } 198 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) { 199 error = errno; 200 reason = "connect"; 201 close(s); 202 s = -1; 203 continue; 204 } 205 break; /*okay*/ 206 } 207 if (s < 0) { 208 if (reason) { 209 errno = error; 210 warn("%s: %s", server, reason); 211 } else 212 warnx("Unknown error in connection attempt"); 213 freeaddrinfo(res); 214 return (1); 215 } 216 217 if (strcmp(server, "whois.denic.de") == 0 || 218 strcmp(server, "de.whois-servers.net") == 0) 219 fmt = "-T dn,ace -C ISO-8859-1 "; 220 else 221 fmt = ""; 222 223 sfi = fdopen(s, "r"); 224 sfo = fdopen(s, "w"); 225 if (sfi == NULL || sfo == NULL) 226 err(1, "fdopen"); 227 (void)fprintf(sfo, "%s%s\r\n", fmt, query); 228 (void)fflush(sfo); 229 nhost = NULL; 230 while ((buf = fgetln(sfi, &len)) != NULL) { 231 p = buf + len - 1; 232 if (isspace((unsigned char)*p)) { 233 do 234 *p = '\0'; 235 while (p > buf && isspace((unsigned char)*--p)); 236 } else { 237 if ((nbuf = malloc(len + 1)) == NULL) 238 err(1, "malloc"); 239 (void)memcpy(nbuf, buf, len); 240 nbuf[len] = '\0'; 241 buf = nbuf; 242 } 243 (void)puts(buf); 244 245 if (nhost != NULL || !(flags & WHOIS_RECURSE)) 246 continue; 247 248 if ((p = strstr(buf, WHOIS_SERVER_ID))) { 249 p += sizeof(WHOIS_SERVER_ID) - 1; 250 while (isblank((unsigned char)*p)) 251 p++; 252 if ((len = strcspn(p, " \t\n\r"))) { 253 if ((nhost = malloc(len + 1)) == NULL) 254 err(1, "malloc"); 255 (void)memcpy(nhost, p, len); 256 nhost[len] = '\0'; 257 } 258 } else if (strcmp(server, ANICHOST) == 0) { 259 for (p = buf; *p != '\0'; p++) 260 *p = tolower((unsigned char)*p); 261 for (i = 0; ip_whois[i] != NULL; i++) { 262 if (strstr(buf, ip_whois[i]) != NULL) { 263 nhost = strdup(ip_whois[i]); 264 if (nhost == NULL) 265 err(1, "strdup"); 266 break; 267 } 268 } 269 } 270 } 271 if (nbuf != NULL) 272 free(nbuf); 273 274 if (nhost != NULL) { 275 error = whois(query, nhost, port, 0); 276 free(nhost); 277 } 278 freeaddrinfo(res); 279 (void)fclose(sfi); 280 (void)fclose(sfo); 281 return (error); 282 } 283 284 /* 285 * If no country is specified determine the top level domain from the query. 286 * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net. 287 * If the domain does not contain '.', check to see if it is an NSI handle 288 * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+). 289 * Fall back to NICHOST for the non-handle case. 290 */ 291 static const char * 292 choose_server(const char *name, const char *country) 293 { 294 static char *server; 295 char *nserver; 296 const char *qhead; 297 char *ep; 298 size_t len; 299 300 if (country != NULL) 301 qhead = country; 302 else if ((qhead = strrchr(name, '.')) == NULL) { 303 if (*name == '!') 304 return (INICHOST); 305 else if ((strncasecmp(name, "COCO-", 5) == 0 || 306 strncasecmp(name, "COHO-", 5) == 0) && 307 strtol(name + 5, &ep, 10) > 0 && *ep == '\0') 308 return (CNICHOST); 309 else 310 return (NICHOST); 311 } else if (isdigit((unsigned char)*(++qhead))) 312 return (ANICHOST); 313 len = strlen(qhead) + sizeof(QNICHOST_TAIL); 314 if ((nserver = realloc(server, len)) == NULL) 315 err(1, "realloc"); 316 server = nserver; 317 (void)strlcpy(server, qhead, len); 318 (void)strlcat(server, QNICHOST_TAIL, len); 319 return (server); 320 } 321 322 static void 323 usage(void) 324 { 325 (void)fprintf(stderr, 326 "usage: %s [-6AadgilmQRr] [-c country-code | -h hostname] " 327 "[-p port] name ...\n", getprogname()); 328 exit(1); 329 } 330