Annotation of src/usr.bin/whois/whois.c, Revision 1.51
1.51 ! mmcc 1: /* $OpenBSD: whois.c,v 1.50 2015/10/09 01:37:09 deraadt Exp $ */
1.1 deraadt 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.
1.26 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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>
1.17 millert 34:
1.1 deraadt 35: #include <netinet/in.h>
1.5 art 36: #include <arpa/inet.h>
1.1 deraadt 37: #include <netdb.h>
1.17 millert 38:
1.18 millert 39: #include <ctype.h>
1.7 millert 40: #include <err.h>
1.35 henning 41: #include <errno.h>
1.1 deraadt 42: #include <stdio.h>
43: #include <stdlib.h>
44: #include <string.h>
45: #include <unistd.h>
46:
1.7 millert 47: #define NICHOST "whois.crsnic.net"
1.22 millert 48: #define INICHOST "whois.networksolutions.com"
1.19 millert 49: #define CNICHOST "whois.corenic.net"
1.7 millert 50: #define DNICHOST "whois.nic.mil"
51: #define GNICHOST "whois.nic.gov"
1.4 deraadt 52: #define ANICHOST "whois.arin.net"
53: #define RNICHOST "whois.ripe.net"
54: #define PNICHOST "whois.apnic.net"
1.7 millert 55: #define RUNICHOST "whois.ripn.net"
1.6 deraadt 56: #define MNICHOST "whois.ra.net"
1.16 fgsch 57: #define LNICHOST "whois.lacnic.net"
1.41 henning 58: #define AFNICHOST "whois.afrinic.net"
1.22 millert 59: #define BNICHOST "whois.registro.br"
1.44 sthen 60: #define PDBHOST "whois.peeringdb.com"
1.6 deraadt 61: #define QNICHOST_TAIL ".whois-servers.net"
1.22 millert 62:
63: #define WHOIS_PORT "whois"
1.24 millert 64: #define WHOIS_SERVER_ID "Whois Server:"
1.1 deraadt 65:
1.8 millert 66: #define WHOIS_RECURSE 0x01
1.22 millert 67: #define WHOIS_QUICK 0x02
68:
1.35 henning 69: const char *port_whois = WHOIS_PORT;
1.41 henning 70: const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
71: AFNICHOST, NULL };
1.8 millert 72:
1.34 henning 73: __dead void usage(void);
74: int whois(const char *, const char *, const char *, int);
75: char *choose_server(const char *, const char *);
1.1 deraadt 76:
77: int
1.27 deraadt 78: main(int argc, char *argv[])
1.1 deraadt 79: {
1.18 millert 80: int ch, flags, rval;
1.39 millert 81: char *host, *name, *country;
1.1 deraadt 82:
1.39 millert 83: country = host = NULL;
1.18 millert 84: flags = rval = 0;
1.44 sthen 85: while ((ch = getopt(argc, argv, "aAc:dgh:ilmp:PqQrR")) != -1)
1.34 henning 86: switch (ch) {
1.4 deraadt 87: case 'a':
88: host = ANICHOST;
89: break;
1.22 millert 90: case 'A':
91: host = PNICHOST;
92: break;
1.18 millert 93: case 'c':
94: country = optarg;
95: break;
1.4 deraadt 96: case 'd':
97: host = DNICHOST;
98: break;
1.7 millert 99: case 'g':
100: host = GNICHOST;
101: break;
1.1 deraadt 102: case 'h':
103: host = optarg;
104: break;
1.7 millert 105: case 'i':
106: host = INICHOST;
107: break;
1.16 fgsch 108: case 'l':
109: host = LNICHOST;
110: break;
1.6 deraadt 111: case 'm':
112: host = MNICHOST;
113: break;
1.4 deraadt 114: case 'p':
1.35 henning 115: port_whois = optarg;
1.4 deraadt 116: break;
1.44 sthen 117: case 'P':
118: host = PDBHOST;
119: break;
1.6 deraadt 120: case 'q':
1.22 millert 121: /* deprecated, now the default */
1.8 millert 122: break;
123: case 'Q':
124: flags |= WHOIS_QUICK;
1.6 deraadt 125: break;
1.4 deraadt 126: case 'r':
127: host = RNICHOST;
128: break;
1.7 millert 129: case 'R':
130: host = RUNICHOST;
1.18 millert 131: break;
1.1 deraadt 132: default:
133: usage();
134: }
135: argc -= optind;
136: argv += optind;
137:
1.18 millert 138: if (!argc || (country != NULL && host != NULL))
1.1 deraadt 139: usage();
1.49 deraadt 140:
1.50 deraadt 141: if (pledge("stdio dns inet", NULL) == -1)
142: err(1, "pledge");
1.1 deraadt 143:
1.18 millert 144: if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
1.22 millert 145: flags |= WHOIS_RECURSE;
1.18 millert 146: for (name = *argv; (name = *argv) != NULL; argv++)
1.22 millert 147: rval += whois(name, host ? host : choose_server(name, country),
1.35 henning 148: port_whois, flags);
1.17 millert 149: exit(rval);
1.8 millert 150: }
151:
1.34 henning 152: int
1.22 millert 153: whois(const char *query, const char *server, const char *port, int flags)
1.8 millert 154: {
1.46 millert 155: FILE *fp;
1.32 henning 156: char *buf, *p, *nhost, *nbuf = NULL;
1.8 millert 157: size_t len;
1.22 millert 158: int i, s, error;
1.32 henning 159: const char *reason = NULL, *fmt;
1.20 millert 160: struct addrinfo hints, *res, *ai;
1.18 millert 161:
162: memset(&hints, 0, sizeof(hints));
163: hints.ai_flags = 0;
164: hints.ai_family = AF_UNSPEC;
165: hints.ai_socktype = SOCK_STREAM;
1.22 millert 166: error = getaddrinfo(server, port, &hints, &res);
1.18 millert 167: if (error) {
1.29 deraadt 168: if (error == EAI_SERVICE)
169: warnx("%s: bad port", port);
170: else
171: warnx("%s: %s", server, gai_strerror(error));
1.18 millert 172: return (1);
173: }
1.6 deraadt 174:
1.20 millert 175: for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
176: s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1.34 henning 177: if (s == -1) {
1.35 henning 178: error = errno;
1.11 itojun 179: reason = "socket";
180: continue;
181: }
1.34 henning 182: if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
1.35 henning 183: error = errno;
1.11 itojun 184: reason = "connect";
185: close(s);
186: s = -1;
187: continue;
188: }
189: break; /*okay*/
190: }
1.34 henning 191: if (s == -1) {
1.35 henning 192: if (reason) {
193: errno = error;
1.24 millert 194: warn("%s: %s", server, reason);
1.35 henning 195: } else
1.17 millert 196: warn("unknown error in connection attempt");
1.18 millert 197: freeaddrinfo(res);
198: return (1);
1.11 itojun 199: }
1.4 deraadt 200:
1.32 henning 201: if (strcmp(server, "whois.denic.de") == 0 ||
1.37 mk 202: strcmp(server, "de" QNICHOST_TAIL) == 0)
1.36 henning 203: fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
1.37 mk 204: else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
205: strcmp(server, "dk" QNICHOST_TAIL) == 0)
206: fmt = "--show-handles %s\r\n";
1.32 henning 207: else
208: fmt = "%s\r\n";
1.31 henning 209:
1.46 millert 210: fp = fdopen(s, "r+");
211: if (fp == NULL)
1.18 millert 212: err(1, "fdopen");
1.46 millert 213: fprintf(fp, fmt, query);
214: fflush(fp);
1.8 millert 215: nhost = NULL;
1.46 millert 216: while ((buf = fgetln(fp, &len)) != NULL) {
1.22 millert 217: p = buf + len - 1;
218: if (isspace((unsigned char)*p)) {
219: do
1.28 fgsch 220: *p = '\0';
221: while (p > buf && isspace((unsigned char)*--p));
1.22 millert 222: } else {
1.17 millert 223: if ((nbuf = malloc(len + 1)) == NULL)
224: err(1, "malloc");
1.12 millert 225: memcpy(nbuf, buf, len);
226: nbuf[len] = '\0';
227: buf = nbuf;
228: }
1.34 henning 229: puts(buf);
1.8 millert 230:
1.22 millert 231: if (nhost != NULL || !(flags & WHOIS_RECURSE))
232: continue;
233:
234: if ((p = strstr(buf, WHOIS_SERVER_ID))) {
235: p += sizeof(WHOIS_SERVER_ID) - 1;
1.45 deraadt 236: while (isblank((unsigned char)*p))
1.25 millert 237: p++;
1.8 millert 238: if ((len = strcspn(p, " \t\n\r"))) {
239: if ((nhost = malloc(len + 1)) == NULL)
240: err(1, "malloc");
241: memcpy(nhost, p, len);
242: nhost[len] = '\0';
243: }
1.22 millert 244: } else if (strcmp(server, ANICHOST) == 0) {
245: for (p = buf; *p != '\0'; p++)
246: *p = tolower((unsigned char)*p);
247: for (i = 0; ip_whois[i] != NULL; i++) {
248: if (strstr(buf, ip_whois[i]) != NULL) {
249: nhost = strdup(ip_whois[i]);
1.23 millert 250: if (nhost == NULL)
251: err(1, "strdup");
1.22 millert 252: break;
253: }
254: }
1.8 millert 255: }
256: }
1.46 millert 257: fclose(fp);
1.32 henning 258: if (nbuf != NULL)
259: free(nbuf);
1.8 millert 260:
1.22 millert 261: if (nhost != NULL) {
262: error = whois(query, nhost, port, 0);
263: free(nhost);
1.8 millert 264: }
1.18 millert 265: freeaddrinfo(res);
266: return (error);
267: }
268:
269: /*
270: * If no country is specified determine the top level domain from the query.
1.19 millert 271: * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
272: * If the domain does not contain '.', check to see if it is an NSI handle
1.38 henning 273: * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an
274: * ASN (starts with AS). Fall back to NICHOST for the non-handle case.
1.18 millert 275: */
1.34 henning 276: char *
1.18 millert 277: choose_server(const char *name, const char *country)
278: {
279: static char *server;
280: const char *qhead;
1.35 henning 281: char *nserver;
1.19 millert 282: char *ep;
1.18 millert 283: size_t len;
1.47 sthen 284: struct addrinfo hints, *res;
285:
286: memset(&hints, 0, sizeof(hints));
287: hints.ai_flags = 0;
288: hints.ai_family = AF_UNSPEC;
289: hints.ai_socktype = SOCK_STREAM;
1.18 millert 290:
291: if (country != NULL)
292: qhead = country;
1.19 millert 293: else if ((qhead = strrchr(name, '.')) == NULL) {
294: if (*name == '!')
1.22 millert 295: return (INICHOST);
1.19 millert 296: else if ((strncasecmp(name, "COCO-", 5) == 0 ||
297: strncasecmp(name, "COHO-", 5) == 0) &&
298: strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
1.34 henning 299: return (CNICHOST);
1.38 henning 300: else if ((strncasecmp(name, "AS", 2) == 0) &&
301: strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
302: return (MNICHOST);
1.19 millert 303: else
304: return (NICHOST);
1.51 ! mmcc 305: } else if (isdigit((unsigned char)*(++qhead)))
1.18 millert 306: return (ANICHOST);
307: len = strlen(qhead) + sizeof(QNICHOST_TAIL);
1.35 henning 308: if ((nserver = realloc(server, len)) == NULL)
1.18 millert 309: err(1, "realloc");
1.35 henning 310: server = nserver;
1.47 sthen 311:
312: /*
313: * Post-2003 ("new") gTLDs are all supposed to have "whois.nic.domain"
314: * (per registry agreement), some older gTLDs also support this...
315: */
1.48 sthen 316: snprintf(server, len, "whois.nic.%s", qhead);
1.47 sthen 317:
318: /* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */
319: if ((strlen(qhead) == 2 ||
320: /* and is required for most of the <=2003 TLDs/gTLDs */
1.48 sthen 321: strcasecmp(qhead, "org") == 0 ||
322: strcasecmp(qhead, "com") == 0 ||
323: strcasecmp(qhead, "net") == 0 ||
324: strcasecmp(qhead, "cat") == 0 ||
325: strcasecmp(qhead, "pro") == 0 ||
326: strcasecmp(qhead, "info") == 0 ||
327: strcasecmp(qhead, "aero") == 0 ||
328: strcasecmp(qhead, "jobs") == 0 ||
329: strcasecmp(qhead, "mobi") == 0 ||
330: strcasecmp(qhead, "museum") == 0 ||
1.47 sthen 331: /* for others, if whois.nic.TLD doesn't exist, try whois-servers */
332: getaddrinfo(server, NULL, &hints, &res) != 0)) {
333: strlcpy(server, qhead, len);
334: strlcat(server, QNICHOST_TAIL, len);
335: }
336:
1.18 millert 337: return (server);
1.1 deraadt 338: }
339:
1.34 henning 340: __dead void
1.17 millert 341: usage(void)
1.1 deraadt 342: {
1.18 millert 343: extern char *__progname;
1.7 millert 344:
1.34 henning 345: fprintf(stderr,
1.44 sthen 346: "usage: %s [-AadgilmPQRr] [-c country-code | -h host] "
1.22 millert 347: "[-p port] name ...\n", __progname);
1.18 millert 348: exit(1);
1.1 deraadt 349: }