| File: | src/usr.bin/whois/whois.c |
| Warning: | line 150, column 7 Value stored to 'name' is never read |
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| 1 | /* $OpenBSD: whois.c,v 1.58 2018/06/19 11:28:11 jca Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1980, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/socket.h> |
| 34 | |
| 35 | #include <netinet/in.h> |
| 36 | #include <arpa/inet.h> |
| 37 | #include <netdb.h> |
| 38 | |
| 39 | #include <ctype.h> |
| 40 | #include <err.h> |
| 41 | #include <errno(*__errno()).h> |
| 42 | #include <stdio.h> |
| 43 | #include <stdlib.h> |
| 44 | #include <string.h> |
| 45 | #include <unistd.h> |
| 46 | |
| 47 | #define NICHOST"whois.crsnic.net" "whois.crsnic.net" |
| 48 | #define INICHOST"whois.networksolutions.com" "whois.networksolutions.com" |
| 49 | #define CNICHOST"whois.corenic.net" "whois.corenic.net" |
| 50 | #define DNICHOST"whois.nic.mil" "whois.nic.mil" |
| 51 | #define GNICHOST"whois.nic.gov" "whois.nic.gov" |
| 52 | #define ANICHOST"whois.arin.net" "whois.arin.net" |
| 53 | #define RNICHOST"whois.ripe.net" "whois.ripe.net" |
| 54 | #define PNICHOST"whois.apnic.net" "whois.apnic.net" |
| 55 | #define RUNICHOST"whois.ripn.net" "whois.ripn.net" |
| 56 | #define MNICHOST"whois.ra.net" "whois.ra.net" |
| 57 | #define LNICHOST"whois.lacnic.net" "whois.lacnic.net" |
| 58 | #define AFNICHOST"whois.afrinic.net" "whois.afrinic.net" |
| 59 | #define BNICHOST"whois.registro.br" "whois.registro.br" |
| 60 | #define PDBHOST"whois.peeringdb.com" "whois.peeringdb.com" |
| 61 | #define IANAHOST"whois.iana.org" "whois.iana.org" |
| 62 | #define QNICHOST_TAIL".whois-servers.net" ".whois-servers.net" |
| 63 | |
| 64 | #define WHOIS_PORT"whois" "whois" |
| 65 | #define WHOIS_SERVER_ID"Registrar WHOIS Server:" "Registrar WHOIS Server:" |
| 66 | |
| 67 | #define WHOIS_RECURSE0x01 0x01 |
| 68 | #define WHOIS_QUICK0x02 0x02 |
| 69 | |
| 70 | const char *port_whois = WHOIS_PORT"whois"; |
| 71 | const char *ip_whois[] = { LNICHOST"whois.lacnic.net", RNICHOST"whois.ripe.net", PNICHOST"whois.apnic.net", BNICHOST"whois.registro.br", |
| 72 | AFNICHOST"whois.afrinic.net", NULL((void *)0) }; |
| 73 | |
| 74 | __dead__attribute__((__noreturn__)) void usage(void); |
| 75 | int whois(const char *, const char *, const char *, int); |
| 76 | char *choose_server(const char *, const char *, char **); |
| 77 | |
| 78 | int |
| 79 | main(int argc, char *argv[]) |
| 80 | { |
| 81 | int ch, flags, rval; |
| 82 | char *host, *name, *country; |
| 83 | |
| 84 | country = host = NULL((void *)0); |
| 85 | flags = rval = 0; |
| 86 | while ((ch = getopt(argc, argv, "aAc:dgh:iIlmp:PqQrR")) != -1) |
| 87 | switch (ch) { |
| 88 | case 'a': |
| 89 | host = ANICHOST"whois.arin.net"; |
| 90 | break; |
| 91 | case 'A': |
| 92 | host = PNICHOST"whois.apnic.net"; |
| 93 | break; |
| 94 | case 'c': |
| 95 | country = optarg; |
| 96 | break; |
| 97 | case 'd': |
| 98 | host = DNICHOST"whois.nic.mil"; |
| 99 | break; |
| 100 | case 'g': |
| 101 | host = GNICHOST"whois.nic.gov"; |
| 102 | break; |
| 103 | case 'h': |
| 104 | host = optarg; |
| 105 | break; |
| 106 | case 'i': |
| 107 | host = INICHOST"whois.networksolutions.com"; |
| 108 | break; |
| 109 | case 'I': |
| 110 | host = IANAHOST"whois.iana.org"; |
| 111 | break; |
| 112 | case 'l': |
| 113 | host = LNICHOST"whois.lacnic.net"; |
| 114 | break; |
| 115 | case 'm': |
| 116 | host = MNICHOST"whois.ra.net"; |
| 117 | break; |
| 118 | case 'p': |
| 119 | port_whois = optarg; |
| 120 | break; |
| 121 | case 'P': |
| 122 | host = PDBHOST"whois.peeringdb.com"; |
| 123 | break; |
| 124 | case 'q': |
| 125 | /* deprecated, now the default */ |
| 126 | break; |
| 127 | case 'Q': |
| 128 | flags |= WHOIS_QUICK0x02; |
| 129 | break; |
| 130 | case 'r': |
| 131 | host = RNICHOST"whois.ripe.net"; |
| 132 | break; |
| 133 | case 'R': |
| 134 | host = RUNICHOST"whois.ripn.net"; |
| 135 | break; |
| 136 | default: |
| 137 | usage(); |
| 138 | } |
| 139 | argc -= optind; |
| 140 | argv += optind; |
| 141 | |
| 142 | if (!argc || (country != NULL((void *)0) && host != NULL((void *)0))) |
| 143 | usage(); |
| 144 | |
| 145 | if (pledge("stdio dns inet", NULL((void *)0)) == -1) |
| 146 | err(1, "pledge"); |
| 147 | |
| 148 | if (host == NULL((void *)0) && country == NULL((void *)0) && !(flags & WHOIS_QUICK0x02)) |
| 149 | flags |= WHOIS_RECURSE0x01; |
| 150 | for (name = *argv; (name = *argv) != NULL((void *)0); argv++) { |
Value stored to 'name' is never read | |
| 151 | char *tofree = NULL((void *)0); |
| 152 | const char *server = |
| 153 | host ? host : choose_server(name, country, &tofree); |
| 154 | rval += whois(name, server, port_whois, flags); |
| 155 | free(tofree); |
| 156 | } |
| 157 | return (rval); |
| 158 | } |
| 159 | |
| 160 | int |
| 161 | whois(const char *query, const char *server, const char *port, int flags) |
| 162 | { |
| 163 | FILE *fp; |
| 164 | char *buf, *p, *nhost, *nbuf = NULL((void *)0); |
| 165 | size_t len; |
| 166 | int i, s, error; |
| 167 | const char *reason = NULL((void *)0), *fmt; |
| 168 | struct addrinfo hints, *res, *ai; |
| 169 | |
| 170 | memset(&hints, 0, sizeof(hints)); |
| 171 | hints.ai_flags = 0; |
| 172 | hints.ai_family = AF_UNSPEC0; |
| 173 | hints.ai_socktype = SOCK_STREAM1; |
| 174 | error = getaddrinfo(server, port, &hints, &res); |
| 175 | if (error) { |
| 176 | if (error == EAI_SERVICE-8) |
| 177 | warnx("%s: bad port", port); |
| 178 | else |
| 179 | warnx("%s: %s", server, gai_strerror(error)); |
| 180 | return (1); |
| 181 | } |
| 182 | |
| 183 | for (s = -1, ai = res; ai != NULL((void *)0); ai = ai->ai_next) { |
| 184 | s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); |
| 185 | if (s == -1) { |
| 186 | error = errno(*__errno()); |
| 187 | reason = "socket"; |
| 188 | continue; |
| 189 | } |
| 190 | if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) { |
| 191 | error = errno(*__errno()); |
| 192 | reason = "connect"; |
| 193 | close(s); |
| 194 | s = -1; |
| 195 | continue; |
| 196 | } |
| 197 | break; /*okay*/ |
| 198 | } |
| 199 | freeaddrinfo(res); |
| 200 | if (s == -1) { |
| 201 | if (reason) { |
| 202 | errno(*__errno()) = error; |
| 203 | warn("%s: %s", server, reason); |
| 204 | } else |
| 205 | warn("unknown error in connection attempt"); |
| 206 | return (1); |
| 207 | } |
| 208 | |
| 209 | if (strcmp(server, "whois.denic.de") == 0 || |
| 210 | strcmp(server, "de" QNICHOST_TAIL".whois-servers.net") == 0) |
| 211 | fmt = "-T dn,ace -C ISO-8859-1 %s\r\n"; |
| 212 | else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 || |
| 213 | strcmp(server, "dk" QNICHOST_TAIL".whois-servers.net") == 0) |
| 214 | fmt = "--show-handles %s\r\n"; |
| 215 | else |
| 216 | fmt = "%s\r\n"; |
| 217 | |
| 218 | fp = fdopen(s, "r+"); |
| 219 | if (fp == NULL((void *)0)) |
| 220 | err(1, "fdopen"); |
| 221 | fprintf(fp, fmt, query); |
| 222 | fflush(fp); |
| 223 | nhost = NULL((void *)0); |
| 224 | while ((buf = fgetln(fp, &len)) != NULL((void *)0)) { |
| 225 | p = buf + len - 1; |
| 226 | if (isspace((unsigned char)*p)) { |
| 227 | do |
| 228 | *p = '\0'; |
| 229 | while (p > buf && isspace((unsigned char)*--p)); |
| 230 | } else { |
| 231 | if ((nbuf = malloc(len + 1)) == NULL((void *)0)) |
| 232 | err(1, "malloc"); |
| 233 | memcpy(nbuf, buf, len); |
| 234 | nbuf[len] = '\0'; |
| 235 | buf = nbuf; |
| 236 | } |
| 237 | puts(buf); |
| 238 | |
| 239 | if (nhost != NULL((void *)0) || !(flags & WHOIS_RECURSE0x01)) |
| 240 | continue; |
| 241 | |
| 242 | if ((p = strstr(buf, WHOIS_SERVER_ID"Registrar WHOIS Server:"))) { |
| 243 | p += sizeof(WHOIS_SERVER_ID"Registrar WHOIS Server:") - 1; |
| 244 | while (isblank((unsigned char)*p)) |
| 245 | p++; |
| 246 | if ((len = strcspn(p, " \t\n\r"))) { |
| 247 | if ((nhost = malloc(len + 1)) == NULL((void *)0)) |
| 248 | err(1, "malloc"); |
| 249 | memcpy(nhost, p, len); |
| 250 | nhost[len] = '\0'; |
| 251 | } |
| 252 | } else if (strcmp(server, ANICHOST"whois.arin.net") == 0) { |
| 253 | for (p = buf; *p != '\0'; p++) |
| 254 | *p = tolower((unsigned char)*p); |
| 255 | for (i = 0; ip_whois[i] != NULL((void *)0); i++) { |
| 256 | if (strstr(buf, ip_whois[i]) != NULL((void *)0)) { |
| 257 | nhost = strdup(ip_whois[i]); |
| 258 | if (nhost == NULL((void *)0)) |
| 259 | err(1, "strdup"); |
| 260 | break; |
| 261 | } |
| 262 | } |
| 263 | } |
| 264 | } |
| 265 | fclose(fp); |
| 266 | free(nbuf); |
| 267 | |
| 268 | if (nhost != NULL((void *)0)) { |
| 269 | error = whois(query, nhost, port, 0); |
| 270 | free(nhost); |
| 271 | } |
| 272 | |
| 273 | return (error); |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * If no country is specified determine the top level domain from the query. |
| 278 | * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net. |
| 279 | * If the domain does not contain '.', check to see if it is an NSI handle |
| 280 | * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an |
| 281 | * ASN (starts with AS) or IPv6 address (contains ':'). Fall back to |
| 282 | * NICHOST for the non-handle and non-IPv6 case. |
| 283 | */ |
| 284 | char * |
| 285 | choose_server(const char *name, const char *country, char **tofree) |
| 286 | { |
| 287 | char *server; |
| 288 | const char *qhead; |
| 289 | char *ep; |
| 290 | struct addrinfo hints, *res = NULL((void *)0); |
| 291 | |
| 292 | memset(&hints, 0, sizeof(hints)); |
| 293 | hints.ai_flags = 0; |
| 294 | hints.ai_family = AF_UNSPEC0; |
| 295 | hints.ai_socktype = SOCK_STREAM1; |
| 296 | |
| 297 | if (country != NULL((void *)0)) |
| 298 | qhead = country; |
| 299 | else if ((qhead = strrchr(name, '.')) == NULL((void *)0)) { |
| 300 | if (*name == '!') |
| 301 | return (INICHOST"whois.networksolutions.com"); |
| 302 | else if ((strncasecmp(name, "COCO-", 5) == 0 || |
| 303 | strncasecmp(name, "COHO-", 5) == 0) && |
| 304 | strtol(name + 5, &ep, 10) > 0 && *ep == '\0') |
| 305 | return (CNICHOST"whois.corenic.net"); |
| 306 | else if ((strncasecmp(name, "AS", 2) == 0) && |
| 307 | strtol(name + 2, &ep, 10) > 0 && *ep == '\0') |
| 308 | return (MNICHOST"whois.ra.net"); |
| 309 | else if (strchr(name, ':') != NULL((void *)0)) /* IPv6 address */ |
| 310 | return (ANICHOST"whois.arin.net"); |
| 311 | else |
| 312 | return (NICHOST"whois.crsnic.net"); |
| 313 | } else if (isdigit((unsigned char)*(++qhead))) |
| 314 | return (ANICHOST"whois.arin.net"); |
| 315 | |
| 316 | /* |
| 317 | * Post-2003 ("new") gTLDs are all supposed to have "whois.nic.domain" |
| 318 | * (per registry agreement), some older gTLDs also support this... |
| 319 | */ |
| 320 | if (asprintf(&server, "whois.nic.%s", qhead) == -1) |
| 321 | err(1, NULL((void *)0)); |
| 322 | |
| 323 | /* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */ |
| 324 | if ((strlen(qhead) == 2 || |
| 325 | /* and is required for most of the <=2003 TLDs/gTLDs */ |
| 326 | strcasecmp(qhead, "org") == 0 || |
| 327 | strcasecmp(qhead, "com") == 0 || |
| 328 | strcasecmp(qhead, "net") == 0 || |
| 329 | strcasecmp(qhead, "cat") == 0 || |
| 330 | strcasecmp(qhead, "pro") == 0 || |
| 331 | strcasecmp(qhead, "info") == 0 || |
| 332 | strcasecmp(qhead, "aero") == 0 || |
| 333 | strcasecmp(qhead, "jobs") == 0 || |
| 334 | strcasecmp(qhead, "mobi") == 0 || |
| 335 | strcasecmp(qhead, "museum") == 0 || |
| 336 | /* for others, if whois.nic.TLD doesn't exist, try whois-servers */ |
| 337 | getaddrinfo(server, NULL((void *)0), &hints, &res) != 0)) { |
| 338 | free(server); |
| 339 | if (asprintf(&server, "%s%s", qhead, QNICHOST_TAIL".whois-servers.net") == -1) |
| 340 | err(1, NULL((void *)0)); |
| 341 | } |
| 342 | if (res != NULL((void *)0)) |
| 343 | freeaddrinfo(res); |
| 344 | |
| 345 | *tofree = server; |
| 346 | return (server); |
| 347 | } |
| 348 | |
| 349 | __dead__attribute__((__noreturn__)) void |
| 350 | usage(void) |
| 351 | { |
| 352 | extern char *__progname; |
| 353 | |
| 354 | fprintf(stderr(&__sF[2]), |
| 355 | "usage: %s [-AadgIilmPQRr] [-c country-code | -h host] " |
| 356 | "[-p port] name ...\n", __progname); |
| 357 | exit(1); |
| 358 | } |