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 * 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. 16 * 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 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1980, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #if 0 37 #ifndef lint 38 static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; 39 #endif /* not lint */ 40 #endif 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/types.h> 46 #include <sys/socket.h> 47 #include <netinet/in.h> 48 #include <arpa/inet.h> 49 #include <ctype.h> 50 #include <err.h> 51 #include <netdb.h> 52 #include <stdarg.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <sysexits.h> 57 #include <unistd.h> 58 59 #define ABUSEHOST "whois.abuse.net" 60 #define NICHOST "whois.crsnic.net" 61 #define INICHOST "whois.networksolutions.com" 62 #define GNICHOST "whois.nic.gov" 63 #define ANICHOST "whois.arin.net" 64 #define LNICHOST "whois.lacnic.net" 65 #define KNICHOST "whois.krnic.net" 66 #define RNICHOST "whois.ripe.net" 67 #define PNICHOST "whois.apnic.net" 68 #define MNICHOST "whois.ra.net" 69 #define QNICHOST_TAIL ".whois-servers.net" 70 #define BNICHOST "whois.registro.br" 71 #define NORIDHOST "whois.norid.no" 72 #define IANAHOST "whois.iana.org" 73 #define GERMNICHOST "de.whois-servers.net" 74 #define FNICHOST "whois.afrinic.net" 75 #define DEFAULT_PORT "whois" 76 #define WHOIS_SERVER_ID "Whois Server: " 77 #define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:" 78 79 #define WHOIS_RECURSE 0x01 80 #define WHOIS_QUICK 0x02 81 82 #define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-') 83 84 const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, 85 FNICHOST, 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, "aAbc:fgh:iIklmp:QrR6")) != -1) { 108 switch (ch) { 109 case 'a': 110 host = ANICHOST; 111 break; 112 case 'A': 113 host = PNICHOST; 114 break; 115 case 'b': 116 host = ABUSEHOST; 117 break; 118 case 'c': 119 country = optarg; 120 break; 121 case 'f': 122 host = FNICHOST; 123 break; 124 case 'g': 125 host = GNICHOST; 126 break; 127 case 'h': 128 host = optarg; 129 break; 130 case 'i': 131 host = INICHOST; 132 break; 133 case 'I': 134 host = IANAHOST; 135 break; 136 case 'k': 137 host = KNICHOST; 138 break; 139 case 'l': 140 host = LNICHOST; 141 break; 142 case 'm': 143 host = MNICHOST; 144 break; 145 case 'p': 146 port = optarg; 147 break; 148 case 'Q': 149 flags |= WHOIS_QUICK; 150 break; 151 case 'r': 152 host = RNICHOST; 153 break; 154 case 'R': 155 warnx("-R is deprecated; use '-c ru' instead"); 156 country = "ru"; 157 break; 158 /* Remove in FreeBSD 10 */ 159 case '6': 160 errx(EX_USAGE, 161 "-6 is deprecated; use -[aAflr] instead"); 162 break; 163 case '?': 164 default: 165 usage(); 166 /* NOTREACHED */ 167 } 168 } 169 argc -= optind; 170 argv += optind; 171 172 if (!argc || (country != NULL && host != NULL)) 173 usage(); 174 175 /* 176 * If no host or country is specified determine the top level domain 177 * from the query. If the TLD is a number, query ARIN. Otherwise, use 178 * TLD.whois-server.net. If the domain does not contain '.', fall 179 * back to NICHOST. 180 */ 181 if (host == NULL && country == NULL) { 182 use_qnichost = 1; 183 host = NICHOST; 184 if (!(flags & WHOIS_QUICK)) 185 flags |= WHOIS_RECURSE; 186 } 187 while (argc-- > 0) { 188 if (country != NULL) { 189 s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL); 190 whois(*argv, qnichost, flags); 191 } else if (use_qnichost) 192 if ((qnichost = choose_server(*argv)) != NULL) 193 whois(*argv, qnichost, flags); 194 if (qnichost == NULL) 195 whois(*argv, host, flags); 196 free(qnichost); 197 qnichost = NULL; 198 argv++; 199 } 200 exit(0); 201 } 202 203 /* 204 * This function will remove any trailing periods from domain, after which it 205 * returns a pointer to newly allocated memory containing the whois server to 206 * be queried, or a NULL if the correct server couldn't be determined. The 207 * caller must remember to free(3) the allocated memory. 208 */ 209 static char * 210 choose_server(char *domain) 211 { 212 char *pos, *retval; 213 214 if (strchr(domain, ':')) { 215 s_asprintf(&retval, "%s", ANICHOST); 216 return (retval); 217 } 218 for (pos = strchr(domain, '\0'); pos > domain && *--pos == '.';) 219 *pos = '\0'; 220 if (*domain == '\0') 221 errx(EX_USAGE, "can't search for a null string"); 222 if (strlen(domain) > sizeof("-NORID")-1 && 223 strcasecmp(domain + strlen(domain) - sizeof("-NORID") + 1, 224 "-NORID") == 0) { 225 s_asprintf(&retval, "%s", NORIDHOST); 226 return (retval); 227 } 228 while (pos > domain && *pos != '.') 229 --pos; 230 if (pos <= domain) 231 return (NULL); 232 if (isdigit((unsigned char)*++pos)) 233 s_asprintf(&retval, "%s", ANICHOST); 234 else 235 s_asprintf(&retval, "%s%s", pos, QNICHOST_TAIL); 236 return (retval); 237 } 238 239 static struct addrinfo * 240 gethostinfo(char const *host, int exit_on_error) 241 { 242 struct addrinfo hints, *res; 243 int error; 244 245 memset(&hints, 0, sizeof(hints)); 246 hints.ai_flags = 0; 247 hints.ai_family = AF_UNSPEC; 248 hints.ai_socktype = SOCK_STREAM; 249 error = getaddrinfo(host, port, &hints, &res); 250 if (error) { 251 warnx("%s: %s", host, gai_strerror(error)); 252 if (exit_on_error) 253 exit(EX_NOHOST); 254 return (NULL); 255 } 256 return (res); 257 } 258 259 /* 260 * Wrapper for asprintf(3) that exits on error. 261 */ 262 static void 263 s_asprintf(char **ret, const char *format, ...) 264 { 265 va_list ap; 266 267 va_start(ap, format); 268 if (vasprintf(ret, format, ap) == -1) { 269 va_end(ap); 270 err(EX_OSERR, "vasprintf()"); 271 } 272 va_end(ap); 273 } 274 275 static void 276 whois(const char *query, const char *hostname, int flags) 277 { 278 FILE *sfi, *sfo; 279 struct addrinfo *hostres, *res; 280 char *buf, *host, *nhost, *p; 281 int i, s; 282 size_t c, len; 283 284 s = -1; 285 hostres = gethostinfo(hostname, 1); 286 for (res = hostres; res; res = res->ai_next) { 287 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 288 if (s < 0) 289 continue; 290 if (connect(s, res->ai_addr, res->ai_addrlen) == 0) 291 break; 292 close(s); 293 } 294 freeaddrinfo(hostres); 295 if (res == NULL) 296 err(EX_OSERR, "connect()"); 297 298 sfi = fdopen(s, "r"); 299 sfo = fdopen(s, "w"); 300 if (sfi == NULL || sfo == NULL) 301 err(EX_OSERR, "fdopen()"); 302 if (strcmp(hostname, GERMNICHOST) == 0) { 303 fprintf(sfo, "-T dn,ace -C US-ASCII %s\r\n", query); 304 } else if (strcmp(hostname, "dk" QNICHOST_TAIL) == 0) { 305 fprintf(sfo, "--show-handles %s\r\n", query); 306 } else { 307 fprintf(sfo, "%s\r\n", query); 308 } 309 fflush(sfo); 310 nhost = NULL; 311 while ((buf = fgetln(sfi, &len)) != NULL) { 312 while (len > 0 && isspace((unsigned char)buf[len - 1])) 313 buf[--len] = '\0'; 314 printf("%.*s\n", (int)len, buf); 315 316 if ((flags & WHOIS_RECURSE) && nhost == NULL) { 317 host = strnstr(buf, WHOIS_SERVER_ID, len); 318 if (host != NULL) { 319 host += sizeof(WHOIS_SERVER_ID) - 1; 320 for (p = host; p < buf + len; p++) { 321 if (!ishost(*p)) { 322 *p = '\0'; 323 break; 324 } 325 } 326 s_asprintf(&nhost, "%.*s", 327 (int)(buf + len - host), host); 328 } else if ((host = 329 strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) { 330 host += sizeof(WHOIS_ORG_SERVER_ID) - 1; 331 for (p = host; p < buf + len; p++) { 332 if (!ishost(*p)) { 333 *p = '\0'; 334 break; 335 } 336 } 337 s_asprintf(&nhost, "%.*s", 338 (int)(buf + len - host), host); 339 } else if (strcmp(hostname, ANICHOST) == 0) { 340 for (c = 0; c <= len; c++) 341 buf[c] = tolower((unsigned char)buf[c]); 342 for (i = 0; ip_whois[i] != NULL; i++) { 343 if (strnstr(buf, ip_whois[i], len) != 344 NULL) { 345 s_asprintf(&nhost, "%s", 346 ip_whois[i]); 347 break; 348 } 349 } 350 } 351 } 352 } 353 if (nhost != NULL) { 354 whois(query, nhost, 0); 355 free(nhost); 356 } 357 } 358 359 static void 360 usage(void) 361 { 362 fprintf(stderr, 363 "usage: whois [-aAbfgiIklmQrR6] [-c country-code | -h hostname] " 364 "[-p port] name ...\n"); 365 exit(EX_USAGE); 366 } 367