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 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/socket.h> 50 #include <netinet/in.h> 51 #include <arpa/inet.h> 52 #include <err.h> 53 #include <netdb.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <sysexits.h> 58 #include <unistd.h> 59 60 #define NICHOST "whois.crsnic.net" 61 #define INICHOST "whois.networksolutions.com" 62 #define DNICHOST "whois.nic.mil" 63 #define GNICHOST "whois.nic.gov" 64 #define ANICHOST "whois.arin.net" 65 #define RNICHOST "whois.ripe.net" 66 #define PNICHOST "whois.apnic.net" 67 #define RUNICHOST "whois.ripn.net" 68 #define MNICHOST "whois.ra.net" 69 #define QNICHOST_TAIL ".whois-servers.net" 70 #define SNICHOST "whois.6bone.net" 71 #define WHOIS_PORT 43 72 73 #define WHOIS_RECURSE 0x01 74 #define WHOIS_INIC_FALLBACK 0x02 75 #define WHOIS_QUICK 0x04 76 77 static void usage __P((void)); 78 static void whois __P((char *, struct addrinfo *, int)); 79 80 int 81 main(argc, argv) 82 int argc; 83 char **argv; 84 { 85 int ch, i, j, error; 86 int use_qnichost, flags; 87 char *host; 88 char *qnichost; 89 struct addrinfo hints, *res; 90 91 #ifdef SOCKS 92 SOCKSinit(argv[0]); 93 #endif 94 95 host = NULL; 96 qnichost = NULL; 97 flags = 0; 98 use_qnichost = 0; 99 while ((ch = getopt(argc, argv, "adgh:impQrR6")) != -1) { 100 switch((char)ch) { 101 case 'a': 102 host = ANICHOST; 103 break; 104 case 'd': 105 host = DNICHOST; 106 break; 107 case 'g': 108 host = GNICHOST; 109 break; 110 case 'h': 111 host = optarg; 112 break; 113 case 'i': 114 host = INICHOST; 115 break; 116 case 'm': 117 host = MNICHOST; 118 break; 119 case 'p': 120 host = PNICHOST; 121 break; 122 case 'Q': 123 flags |= WHOIS_QUICK; 124 break; 125 case 'r': 126 host = RNICHOST; 127 break; 128 case 'R': 129 host = RUNICHOST; 130 break; 131 case '6': 132 host = SNICHOST; 133 break; 134 case '?': 135 default: 136 usage(); 137 } 138 } 139 argc -= optind; 140 argv += optind; 141 142 if (!argc) { 143 usage(); 144 } 145 146 /* 147 * If no nic host is specified, use whois-servers.net 148 * if there is a '.' in the name, else fall back to NICHOST. 149 */ 150 if (host == NULL) { 151 use_qnichost = 1; 152 host = NICHOST; 153 if (!(flags & WHOIS_QUICK)) { 154 flags |= WHOIS_INIC_FALLBACK | WHOIS_RECURSE; 155 } 156 } 157 while (argc--) { 158 if (use_qnichost) { 159 if (qnichost) { 160 free(qnichost); 161 qnichost = NULL; 162 } 163 for (i = j = 0; (*argv)[i]; i++) { 164 if ((*argv)[i] == '.') { 165 j = i; 166 } 167 } 168 if (j != 0) { 169 qnichost = (char *) calloc(i - j + 1 + 170 strlen(QNICHOST_TAIL), sizeof(char)); 171 if (!qnichost) { 172 err(1, "calloc"); 173 } 174 strcpy(qnichost, *argv + j + 1); 175 strcat(qnichost, QNICHOST_TAIL); 176 177 memset(&hints, 0, sizeof(hints)); 178 hints.ai_flags = 0; 179 hints.ai_family = AF_UNSPEC; 180 hints.ai_socktype = SOCK_STREAM; 181 error = getaddrinfo(qnichost, "whois", 182 &hints, &res); 183 if (error != 0) 184 errx(EX_NOHOST, "%s: %s", qnichost, 185 gai_strerror(error)); 186 } 187 } 188 if (!qnichost) { 189 memset(&hints, 0, sizeof(hints)); 190 hints.ai_flags = 0; 191 hints.ai_family = AF_UNSPEC; 192 hints.ai_socktype = SOCK_STREAM; 193 error = getaddrinfo(host, "whois", &hints, &res); 194 if (error != 0) 195 errx(EX_NOHOST, "%s: %s", host, 196 gai_strerror(error)); 197 } 198 199 whois(*argv++, res, flags); 200 freeaddrinfo(res); 201 } 202 exit(0); 203 } 204 205 static void 206 whois(name, res, flags) 207 char *name; 208 struct addrinfo *res; 209 int flags; 210 { 211 FILE *sfi, *sfo; 212 char *buf, *p, *nhost; 213 size_t len; 214 int s, nomatch; 215 216 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 217 if (s < 0) { 218 err(EX_OSERR, "socket"); 219 } 220 221 if (connect(s, res->ai_addr, res->ai_addrlen) < 0) { 222 err(EX_OSERR, "connect"); 223 } 224 225 sfi = fdopen(s, "r"); 226 sfo = fdopen(s, "w"); 227 if (sfi == NULL || sfo == NULL) { 228 err(EX_OSERR, "fdopen"); 229 } 230 (void)fprintf(sfo, "%s\r\n", name); 231 (void)fflush(sfo); 232 nhost = NULL; 233 nomatch = 0; 234 while ((buf = fgetln(sfi, &len))) { 235 if (buf[len - 2] == '\r') { 236 buf[len - 2] = '\0'; 237 } else { 238 buf[len - 1] = '\0'; 239 } 240 241 if ((flags & WHOIS_RECURSE) && !nhost && 242 (p = strstr(buf, "Whois Server: "))) { 243 p += sizeof("Whois Server: ") - 1; 244 if ((len = strcspn(p, " \t\n\r"))) { 245 if ((nhost = malloc(len + 1)) == NULL) { 246 err(1, "malloc"); 247 } 248 memcpy(nhost, p, len); 249 nhost[len] = '\0'; 250 } 251 } 252 if ((flags & WHOIS_INIC_FALLBACK) && !nhost && !nomatch && 253 (p = strstr(buf, "No match for \""))) { 254 p += sizeof("No match for \"") - 1; 255 if ((len = strcspn(p, "\"")) && 256 strncasecmp(name, p, len) == 0 && 257 name[len] == '\0' && 258 strchr(name, '.') == NULL) { 259 nomatch = 1; 260 } 261 } 262 (void)puts(buf); 263 } 264 265 /* Do second lookup as needed */ 266 if (nomatch && !nhost) { 267 (void)printf("Looking up %s at %s.\n\n", name, INICHOST); 268 nhost = INICHOST; 269 } 270 if (nhost) { 271 struct addrinfo hints, *res2; 272 int error; 273 274 memset(&hints, 0, sizeof(hints)); 275 hints.ai_flags = 0; 276 hints.ai_family = AF_UNSPEC; 277 hints.ai_socktype = SOCK_STREAM; 278 error = getaddrinfo(nhost, "whois", &hints, &res2); 279 if (error != 0) { 280 warnx("%s: %s", nhost, gai_strerror(error)); 281 return; 282 } 283 if (!nomatch) { 284 free(nhost); 285 } 286 whois(name, res2, 0); 287 freeaddrinfo(res2); 288 } 289 } 290 291 static void 292 usage() 293 { 294 (void)fprintf(stderr, 295 "usage: whois [-adgimpQrR6] [-h hostname] name ...\n"); 296 exit(EX_USAGE); 297 } 298