1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 20 * 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 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/types.h> 50 #include <sys/socket.h> 51 #include <netinet/in.h> 52 #include <arpa/inet.h> 53 #include <ctype.h> 54 #include <err.h> 55 #include <netdb.h> 56 #include <stdarg.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <sysexits.h> 61 #include <unistd.h> 62 63 #define ABUSEHOST "whois.abuse.net" 64 #define NICHOST "whois.crsnic.net" 65 #define INICHOST "whois.networksolutions.com" 66 #define DNICHOST "whois.nic.mil" 67 #define GNICHOST "whois.nic.gov" 68 #define ANICHOST "whois.arin.net" 69 #define LNICHOST "whois.lacnic.net" 70 #define RNICHOST "whois.ripe.net" 71 #define PNICHOST "whois.apnic.net" 72 #define MNICHOST "whois.ra.net" 73 #define QNICHOST_TAIL ".whois-servers.net" 74 #define SNICHOST "whois.6bone.net" 75 #define BNICHOST "whois.registro.br" 76 #define NORIDHOST "whois.norid.no" 77 #define IANAHOST "whois.iana.org" 78 #define DEFAULT_PORT "whois" 79 #define WHOIS_SERVER_ID "Whois Server: " 80 #define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:" 81 82 #define WHOIS_RECURSE 0x01 83 #define WHOIS_QUICK 0x02 84 85 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-') 86 87 const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, NULL }; 88 const char *port = DEFAULT_PORT; 89 90 static char *choose_server(char *); 91 static struct addrinfo *gethostinfo(char const *host, int exit_on_error); 92 static void s_asprintf(char **ret, const char *format, ...) __printflike(2, 3); 93 static void usage(void); 94 static void whois(const char *, const char *, int); 95 96 int 97 main(int argc, char *argv[]) 98 { 99 const char *country, *host; 100 char *qnichost; 101 int ch, flags, use_qnichost; 102 103 #ifdef SOCKS 104 SOCKSinit(argv[0]); 105 #endif 106 107 country = host = qnichost = NULL; 108 flags = use_qnichost = 0; 109 while ((ch = getopt(argc, argv, "aAbc:dgh:iIlmp:QrR6")) != -1) { 110 switch (ch) { 111 case 'a': 112 host = ANICHOST; 113 break; 114 case 'A': 115 host = PNICHOST; 116 break; 117 case 'b': 118 host = ABUSEHOST; 119 break; 120 case 'c': 121 country = optarg; 122 break; 123 case 'd': 124 host = DNICHOST; 125 break; 126 case 'g': 127 host = GNICHOST; 128 break; 129 case 'h': 130 host = optarg; 131 break; 132 case 'i': 133 host = INICHOST; 134 break; 135 case 'I': 136 host = IANAHOST; 137 break; 138 case 'l': 139 host = LNICHOST; 140 break; 141 case 'm': 142 host = MNICHOST; 143 break; 144 case 'p': 145 port = optarg; 146 break; 147 case 'Q': 148 flags |= WHOIS_QUICK; 149 break; 150 case 'r': 151 host = RNICHOST; 152 break; 153 case 'R': 154 warnx("-R is deprecated; use '-c ru' instead"); 155 country = "ru"; 156 break; 157 case '6': 158 host = SNICHOST; 159 break; 160 case '?': 161 default: 162 usage(); 163 /* NOTREACHED */ 164 } 165 } 166 argc -= optind; 167 argv += optind; 168 169 if (!argc || (country != NULL && host != NULL)) 170 usage(); 171 172 /* 173 * If no host or country is specified determine the top level domain 174 * from the query. If the TLD is a number, query ARIN. Otherwise, use 175 * TLD.whois-server.net. If the domain does not contain '.', fall 176 * back to NICHOST. 177 */ 178 if (host == NULL && country == NULL) { 179 use_qnichost = 1; 180 host = NICHOST; 181 if (!(flags & WHOIS_QUICK)) 182 flags |= WHOIS_RECURSE; 183 } 184 while (argc-- > 0) { 185 if (country != NULL) { 186 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL); 187 whois(*argv, qnichost, flags); 188 } else if (use_qnichost) 189 if ((qnichost = choose_server(*argv)) != NULL) 190 whois(*argv, qnichost, flags); 191 if (qnichost == NULL) 192 whois(*argv, host, flags); 193 free(qnichost); 194 qnichost = NULL; 195 argv++; 196 } 197 exit(0); 198 } 199 200 /* 201 * This function will remove any trailing periods from domain, after which it 202 * returns a pointer to newly allocated memory containing the whois server to 203 * be queried, or a NULL if the correct server couldn't be determined. The 204 * caller must remember to free(3) the allocated memory. 205 */ 206 static char * 207 choose_server(char *domain) 208 { 209 char *pos, *retval; 210 211 for (pos = strchr(domain, '\0'); pos > domain && *--pos == '.';) 212 *pos = '\0'; 213 if (*domain == '\0') 214 errx(EX_USAGE, "can't search for a null string"); 215 if (strlen(domain) > sizeof("-NORID")-1 && 216 strcasecmp(domain + strlen(domain) - sizeof("-NORID") + 1, 217 "-NORID") == 0) { 218 s_asprintf(&retval, "%s", NORIDHOST); 219 return (retval); 220 } 221 while (pos > domain && *pos != '.') 222 --pos; 223 if (pos <= domain) 224 return (NULL); 225 if (isdigit((unsigned char)*++pos)) 226 s_asprintf(&retval, "%s", ANICHOST); 227 else 228 s_asprintf(&retval, "%s%s", pos, QNICHOST_TAIL); 229 return (retval); 230 } 231 232 static struct addrinfo * 233 gethostinfo(char const *host, int exit_on_error) 234 { 235 struct addrinfo hints, *res; 236 int error; 237 238 memset(&hints, 0, sizeof(hints)); 239 hints.ai_flags = 0; 240 hints.ai_family = AF_UNSPEC; 241 hints.ai_socktype = SOCK_STREAM; 242 error = getaddrinfo(host, port, &hints, &res); 243 if (error) { 244 warnx("%s: %s", host, gai_strerror(error)); 245 if (exit_on_error) 246 exit(EX_NOHOST); 247 return (NULL); 248 } 249 return (res); 250 } 251 252 /* 253 * Wrapper for asprintf(3) that exits on error. 254 */ 255 static void 256 s_asprintf(char **ret, const char *format, ...) 257 { 258 va_list ap; 259 260 va_start(ap, format); 261 if (vasprintf(ret, format, ap) == -1) { 262 va_end(ap); 263 err(EX_OSERR, "vasprintf()"); 264 } 265 va_end(ap); 266 } 267 268 static void 269 whois(const char *query, const char *hostname, int flags) 270 { 271 FILE *sfi, *sfo; 272 struct addrinfo *hostres, *res; 273 char *buf, *host, *nhost, *p; 274 int i, s; 275 size_t c, len; 276 277 hostres = gethostinfo(hostname, 1); 278 for (res = hostres; res; res = res->ai_next) { 279 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 280 if (s < 0) 281 continue; 282 if (connect(s, res->ai_addr, res->ai_addrlen) == 0) 283 break; 284 close(s); 285 } 286 freeaddrinfo(hostres); 287 if (res == NULL) 288 err(EX_OSERR, "connect()"); 289 290 sfi = fdopen(s, "r"); 291 sfo = fdopen(s, "w"); 292 if (sfi == NULL || sfo == NULL) 293 err(EX_OSERR, "fdopen()"); 294 fprintf(sfo, "%s\r\n", query); 295 fflush(sfo); 296 nhost = NULL; 297 while ((buf = fgetln(sfi, &len)) != NULL) { 298 while (len > 0 && isspace((unsigned char)buf[len - 1])) 299 buf[--len] = '\0'; 300 printf("%.*s\n", (int)len, buf); 301 302 if ((flags & WHOIS_RECURSE) && nhost == NULL) { 303 host = strnstr(buf, WHOIS_SERVER_ID, len); 304 if (host != NULL) { 305 host += sizeof(WHOIS_SERVER_ID) - 1; 306 for (p = host; p < buf + len; p++) { 307 if (!ishost(*p)) { 308 *p = '\0'; 309 break; 310 } 311 } 312 s_asprintf(&nhost, "%.*s", 313 (int)(buf + len - host), host); 314 } else if ((host = 315 strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) { 316 host += sizeof(WHOIS_ORG_SERVER_ID) - 1; 317 for (p = host; p < buf + len; p++) { 318 if (!ishost(*p)) { 319 *p = '\0'; 320 break; 321 } 322 } 323 s_asprintf(&nhost, "%.*s", 324 (int)(buf + len - host), host); 325 } else if (strcmp(hostname, ANICHOST) == 0) { 326 for (c = 0; c <= len; c++) 327 buf[c] = tolower((int)buf[c]); 328 for (i = 0; ip_whois[i] != NULL; i++) { 329 if (strnstr(buf, ip_whois[i], len) != 330 NULL) { 331 s_asprintf(&nhost, "%s", 332 ip_whois[i]); 333 break; 334 } 335 } 336 } 337 } 338 } 339 if (nhost != NULL) { 340 whois(query, nhost, 0); 341 free(nhost); 342 } 343 } 344 345 static void 346 usage(void) 347 { 348 fprintf(stderr, 349 "usage: whois [-aAbdgiIlmQrR6] [-c country-code | -h hostname] " 350 "[-p port] name ...\n"); 351 exit(EX_USAGE); 352 } 353