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 NICHOST "whois.crsnic.net" 64 #define INICHOST "whois.networksolutions.com" 65 #define DNICHOST "whois.nic.mil" 66 #define GNICHOST "whois.nic.gov" 67 #define ANICHOST "whois.arin.net" 68 #define LNICHOST "whois.lacnic.net" 69 #define RNICHOST "whois.ripe.net" 70 #define PNICHOST "whois.apnic.net" 71 #define MNICHOST "whois.ra.net" 72 #define QNICHOST_TAIL ".whois-servers.net" 73 #define SNICHOST "whois.6bone.net" 74 #define BNICHOST "whois.registro.br" 75 #define NORIDHOST "whois.norid.no" 76 #define DEFAULT_PORT "whois" 77 #define WHOIS_SERVER_ID "Whois Server: " 78 #define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:" 79 80 #define WHOIS_RECURSE 0x01 81 #define WHOIS_QUICK 0x02 82 83 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-') 84 85 const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, NULL }; 86 const char *port = DEFAULT_PORT; 87 88 static char *choose_server(char *); 89 static struct addrinfo *gethostinfo(char const *host, int exit_on_error); 90 static void s_asprintf(char **ret, const char *format, ...) __printflike(2, 3); 91 static void usage(void); 92 static void whois(const char *, const char *, int); 93 94 int 95 main(int argc, char *argv[]) 96 { 97 const char *country, *host; 98 char *qnichost; 99 int ch, flags, use_qnichost; 100 101 #ifdef SOCKS 102 SOCKSinit(argv[0]); 103 #endif 104 105 country = host = qnichost = NULL; 106 flags = use_qnichost = 0; 107 while ((ch = getopt(argc, argv, "aAc:dgh:ilmp:QrR6")) != -1) { 108 switch (ch) { 109 case 'a': 110 host = ANICHOST; 111 break; 112 case 'A': 113 host = PNICHOST; 114 break; 115 case 'c': 116 country = optarg; 117 break; 118 case 'd': 119 host = DNICHOST; 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 = optarg; 138 break; 139 case 'Q': 140 flags |= WHOIS_QUICK; 141 break; 142 case 'r': 143 host = RNICHOST; 144 break; 145 case 'R': 146 warnx("-R is deprecated; use '-c ru' instead"); 147 country = "ru"; 148 break; 149 case '6': 150 host = SNICHOST; 151 break; 152 case '?': 153 default: 154 usage(); 155 /* NOTREACHED */ 156 } 157 } 158 argc -= optind; 159 argv += optind; 160 161 if (!argc || (country != NULL && host != NULL)) 162 usage(); 163 164 /* 165 * If no host or country is specified determine the top level domain 166 * from the query. If the TLD is a number, query ARIN. Otherwise, use 167 * TLD.whois-server.net. If the domain does not contain '.', fall 168 * back to NICHOST. 169 */ 170 if (host == NULL && country == NULL) { 171 use_qnichost = 1; 172 host = NICHOST; 173 if (!(flags & WHOIS_QUICK)) 174 flags |= WHOIS_RECURSE; 175 } 176 while (argc-- > 0) { 177 if (country != NULL) { 178 if (strcasecmp(country, "su") == 0) 179 country = "ru"; 180 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL); 181 whois(*argv, qnichost, flags); 182 } else if (use_qnichost) 183 if ((qnichost = choose_server(*argv)) != NULL) 184 whois(*argv, qnichost, flags); 185 if (qnichost == NULL) 186 whois(*argv, host, flags); 187 free(qnichost); 188 qnichost = NULL; 189 argv++; 190 } 191 exit(0); 192 } 193 194 /* 195 * This function will remove any trailing periods from domain, after which it 196 * returns a pointer to newly allocated memory containing the whois server to 197 * be queried, or a NULL if the correct server couldn't be determined. The 198 * caller must remember to free(3) the allocated memory. 199 */ 200 static char * 201 choose_server(char *domain) 202 { 203 char *pos, *retval; 204 205 for (pos = strchr(domain, '\0'); pos > domain && *--pos == '.';) 206 *pos = '\0'; 207 if (*domain == '\0') 208 errx(EX_USAGE, "can't search for a null string"); 209 if (strlen(domain) > sizeof("-NORID")-1 && 210 strcasecmp(domain + strlen(domain) - sizeof("-NORID") + 1, 211 "-NORID") == 0) { 212 s_asprintf(&retval, "%s", NORIDHOST); 213 return (retval); 214 } 215 while (pos > domain && *pos != '.') 216 --pos; 217 if (pos <= domain) 218 return (NULL); 219 if (isdigit((unsigned char)*++pos)) 220 s_asprintf(&retval, "%s", ANICHOST); 221 else { 222 if (strcasecmp(pos, "su") == 0) 223 pos = "ru"; 224 s_asprintf(&retval, "%s%s", pos, QNICHOST_TAIL); 225 } 226 return (retval); 227 } 228 229 static struct addrinfo * 230 gethostinfo(char const *host, int exit_on_error) 231 { 232 struct addrinfo hints, *res; 233 int error; 234 235 memset(&hints, 0, sizeof(hints)); 236 hints.ai_flags = 0; 237 hints.ai_family = AF_UNSPEC; 238 hints.ai_socktype = SOCK_STREAM; 239 error = getaddrinfo(host, port, &hints, &res); 240 if (error) { 241 warnx("%s: %s", host, gai_strerror(error)); 242 if (exit_on_error) 243 exit(EX_NOHOST); 244 return (NULL); 245 } 246 return (res); 247 } 248 249 /* 250 * Wrapper for asprintf(3) that exits on error. 251 */ 252 static void 253 s_asprintf(char **ret, const char *format, ...) 254 { 255 va_list ap; 256 257 va_start(ap, format); 258 if (vasprintf(ret, format, ap) == -1) { 259 va_end(ap); 260 err(EX_OSERR, "vasprintf()"); 261 } 262 va_end(ap); 263 } 264 265 static void 266 whois(const char *query, const char *hostname, int flags) 267 { 268 FILE *sfi, *sfo; 269 struct addrinfo *hostres, *res; 270 char *buf, *host, *nhost, *p; 271 int i, s; 272 size_t c, len; 273 274 hostres = gethostinfo(hostname, 1); 275 for (res = hostres; res; res = res->ai_next) { 276 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 277 if (s < 0) 278 continue; 279 if (connect(s, res->ai_addr, res->ai_addrlen) == 0) 280 break; 281 close(s); 282 } 283 freeaddrinfo(hostres); 284 if (res == NULL) 285 err(EX_OSERR, "connect()"); 286 287 sfi = fdopen(s, "r"); 288 sfo = fdopen(s, "w"); 289 if (sfi == NULL || sfo == NULL) 290 err(EX_OSERR, "fdopen()"); 291 fprintf(sfo, "%s\r\n", query); 292 fflush(sfo); 293 nhost = NULL; 294 while ((buf = fgetln(sfi, &len)) != NULL) { 295 while (len > 0 && isspace((unsigned char)buf[len - 1])) 296 buf[--len] = '\0'; 297 printf("%.*s\n", (int)len, buf); 298 299 if ((flags & WHOIS_RECURSE) && nhost == NULL) { 300 host = strnstr(buf, WHOIS_SERVER_ID, len); 301 if (host != NULL) { 302 host += sizeof(WHOIS_SERVER_ID) - 1; 303 for (p = host; p < buf + len; p++) { 304 if (!ishost(*p)) { 305 *p = '\0'; 306 break; 307 } 308 } 309 s_asprintf(&nhost, "%.*s", 310 (int)(buf + len - host), host); 311 } else if ((host = 312 strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) { 313 host += sizeof(WHOIS_ORG_SERVER_ID) - 1; 314 for (p = host; p < buf + len; p++) { 315 if (!ishost(*p)) { 316 *p = '\0'; 317 break; 318 } 319 } 320 s_asprintf(&nhost, "%.*s", 321 (int)(buf + len - host), host); 322 } else if (strcmp(hostname, ANICHOST) == 0) { 323 for (c = 0; c <= len; c++) 324 buf[c] = tolower((int)buf[c]); 325 for (i = 0; ip_whois[i] != NULL; i++) { 326 if (strnstr(buf, ip_whois[i], len) != 327 NULL) { 328 s_asprintf(&nhost, "%s", 329 ip_whois[i]); 330 break; 331 } 332 } 333 } 334 } 335 } 336 if (nhost != NULL) { 337 whois(query, nhost, 0); 338 free(nhost); 339 } 340 } 341 342 static void 343 usage(void) 344 { 345 fprintf(stderr, 346 "usage: whois [-aAdgilmQrR6] [-c country-code | -h hostname] " 347 "[-p port] name ...\n"); 348 exit(EX_USAGE); 349 } 350