Annotation of src/usr.bin/whois/whois.c, Revision 1.43
1.43 ! jmc 1: /* $OpenBSD: whois.c,v 1.42 2010/03/04 18:17:03 krw 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"
1.6 deraadt 60: #define QNICHOST_TAIL ".whois-servers.net"
1.22 millert 61:
62: #define WHOIS_PORT "whois"
1.24 millert 63: #define WHOIS_SERVER_ID "Whois Server:"
1.1 deraadt 64:
1.8 millert 65: #define WHOIS_RECURSE 0x01
1.22 millert 66: #define WHOIS_QUICK 0x02
67:
1.35 henning 68: const char *port_whois = WHOIS_PORT;
1.41 henning 69: const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
70: AFNICHOST, NULL };
1.8 millert 71:
1.34 henning 72: __dead void usage(void);
73: int whois(const char *, const char *, const char *, int);
74: char *choose_server(const char *, const char *);
1.1 deraadt 75:
76: int
1.27 deraadt 77: main(int argc, char *argv[])
1.1 deraadt 78: {
1.18 millert 79: int ch, flags, rval;
1.39 millert 80: char *host, *name, *country;
1.1 deraadt 81:
1.39 millert 82: country = host = NULL;
1.18 millert 83: flags = rval = 0;
1.42 krw 84: while ((ch = getopt(argc, argv, "aAc:dgh:ilmp:qQrR")) != -1)
1.34 henning 85: switch (ch) {
1.4 deraadt 86: case 'a':
87: host = ANICHOST;
88: break;
1.22 millert 89: case 'A':
90: host = PNICHOST;
91: break;
1.18 millert 92: case 'c':
93: country = optarg;
94: break;
1.4 deraadt 95: case 'd':
96: host = DNICHOST;
97: break;
1.7 millert 98: case 'g':
99: host = GNICHOST;
100: break;
1.1 deraadt 101: case 'h':
102: host = optarg;
103: break;
1.7 millert 104: case 'i':
105: host = INICHOST;
106: break;
1.16 fgsch 107: case 'l':
108: host = LNICHOST;
109: break;
1.6 deraadt 110: case 'm':
111: host = MNICHOST;
112: break;
1.4 deraadt 113: case 'p':
1.35 henning 114: port_whois = optarg;
1.4 deraadt 115: break;
1.6 deraadt 116: case 'q':
1.22 millert 117: /* deprecated, now the default */
1.8 millert 118: break;
119: case 'Q':
120: flags |= WHOIS_QUICK;
1.6 deraadt 121: break;
1.4 deraadt 122: case 'r':
123: host = RNICHOST;
124: break;
1.7 millert 125: case 'R':
126: host = RUNICHOST;
1.18 millert 127: break;
1.1 deraadt 128: default:
129: usage();
130: }
131: argc -= optind;
132: argv += optind;
133:
1.18 millert 134: if (!argc || (country != NULL && host != NULL))
1.1 deraadt 135: usage();
136:
1.18 millert 137: if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
1.22 millert 138: flags |= WHOIS_RECURSE;
1.18 millert 139: for (name = *argv; (name = *argv) != NULL; argv++)
1.22 millert 140: rval += whois(name, host ? host : choose_server(name, country),
1.35 henning 141: port_whois, flags);
1.17 millert 142: exit(rval);
1.8 millert 143: }
144:
1.34 henning 145: int
1.22 millert 146: whois(const char *query, const char *server, const char *port, int flags)
1.8 millert 147: {
148: FILE *sfi, *sfo;
1.32 henning 149: char *buf, *p, *nhost, *nbuf = NULL;
1.8 millert 150: size_t len;
1.22 millert 151: int i, s, error;
1.32 henning 152: const char *reason = NULL, *fmt;
1.20 millert 153: struct addrinfo hints, *res, *ai;
1.18 millert 154:
155: memset(&hints, 0, sizeof(hints));
156: hints.ai_flags = 0;
157: hints.ai_family = AF_UNSPEC;
158: hints.ai_socktype = SOCK_STREAM;
1.22 millert 159: error = getaddrinfo(server, port, &hints, &res);
1.18 millert 160: if (error) {
1.29 deraadt 161: if (error == EAI_SERVICE)
162: warnx("%s: bad port", port);
163: else
164: warnx("%s: %s", server, gai_strerror(error));
1.18 millert 165: return (1);
166: }
1.6 deraadt 167:
1.20 millert 168: for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
169: s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1.34 henning 170: if (s == -1) {
1.35 henning 171: error = errno;
1.11 itojun 172: reason = "socket";
173: continue;
174: }
1.34 henning 175: if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
1.35 henning 176: error = errno;
1.11 itojun 177: reason = "connect";
178: close(s);
179: s = -1;
180: continue;
181: }
182: break; /*okay*/
183: }
1.34 henning 184: if (s == -1) {
1.35 henning 185: if (reason) {
186: errno = error;
1.24 millert 187: warn("%s: %s", server, reason);
1.35 henning 188: } else
1.17 millert 189: warn("unknown error in connection attempt");
1.18 millert 190: freeaddrinfo(res);
191: return (1);
1.11 itojun 192: }
1.4 deraadt 193:
1.32 henning 194: if (strcmp(server, "whois.denic.de") == 0 ||
1.37 mk 195: strcmp(server, "de" QNICHOST_TAIL) == 0)
1.36 henning 196: fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
1.37 mk 197: else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
198: strcmp(server, "dk" QNICHOST_TAIL) == 0)
199: fmt = "--show-handles %s\r\n";
1.32 henning 200: else
201: fmt = "%s\r\n";
1.31 henning 202:
1.1 deraadt 203: sfi = fdopen(s, "r");
204: sfo = fdopen(s, "w");
1.4 deraadt 205: if (sfi == NULL || sfo == NULL)
1.18 millert 206: err(1, "fdopen");
1.34 henning 207: fprintf(sfo, fmt, query);
208: fflush(sfo);
1.8 millert 209: nhost = NULL;
1.22 millert 210: while ((buf = fgetln(sfi, &len)) != NULL) {
211: p = buf + len - 1;
212: if (isspace((unsigned char)*p)) {
213: do
1.28 fgsch 214: *p = '\0';
215: while (p > buf && isspace((unsigned char)*--p));
1.22 millert 216: } else {
1.17 millert 217: if ((nbuf = malloc(len + 1)) == NULL)
218: err(1, "malloc");
1.12 millert 219: memcpy(nbuf, buf, len);
220: nbuf[len] = '\0';
221: buf = nbuf;
222: }
1.34 henning 223: puts(buf);
1.8 millert 224:
1.22 millert 225: if (nhost != NULL || !(flags & WHOIS_RECURSE))
226: continue;
227:
228: if ((p = strstr(buf, WHOIS_SERVER_ID))) {
229: p += sizeof(WHOIS_SERVER_ID) - 1;
1.25 millert 230: while (isblank(*p))
231: p++;
1.8 millert 232: if ((len = strcspn(p, " \t\n\r"))) {
233: if ((nhost = malloc(len + 1)) == NULL)
234: err(1, "malloc");
235: memcpy(nhost, p, len);
236: nhost[len] = '\0';
237: }
1.22 millert 238: } else if (strcmp(server, ANICHOST) == 0) {
239: for (p = buf; *p != '\0'; p++)
240: *p = tolower((unsigned char)*p);
241: for (i = 0; ip_whois[i] != NULL; i++) {
242: if (strstr(buf, ip_whois[i]) != NULL) {
243: nhost = strdup(ip_whois[i]);
1.23 millert 244: if (nhost == NULL)
245: err(1, "strdup");
1.22 millert 246: break;
247: }
248: }
1.8 millert 249: }
250: }
1.32 henning 251: if (nbuf != NULL)
252: free(nbuf);
1.8 millert 253:
1.22 millert 254: if (nhost != NULL) {
255: error = whois(query, nhost, port, 0);
256: free(nhost);
1.8 millert 257: }
1.18 millert 258: freeaddrinfo(res);
259: return (error);
260: }
261:
262: /*
263: * If no country is specified determine the top level domain from the query.
1.19 millert 264: * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
265: * If the domain does not contain '.', check to see if it is an NSI handle
1.38 henning 266: * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an
267: * ASN (starts with AS). Fall back to NICHOST for the non-handle case.
1.18 millert 268: */
1.34 henning 269: char *
1.18 millert 270: choose_server(const char *name, const char *country)
271: {
272: static char *server;
273: const char *qhead;
1.35 henning 274: char *nserver;
1.19 millert 275: char *ep;
1.18 millert 276: size_t len;
277:
278: if (country != NULL)
279: qhead = country;
1.19 millert 280: else if ((qhead = strrchr(name, '.')) == NULL) {
281: if (*name == '!')
1.22 millert 282: return (INICHOST);
1.19 millert 283: else if ((strncasecmp(name, "COCO-", 5) == 0 ||
284: strncasecmp(name, "COHO-", 5) == 0) &&
285: strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
1.34 henning 286: return (CNICHOST);
1.38 henning 287: else if ((strncasecmp(name, "AS", 2) == 0) &&
288: strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
289: return (MNICHOST);
1.19 millert 290: else
291: return (NICHOST);
292: } else if (isdigit(*(++qhead)))
1.18 millert 293: return (ANICHOST);
294: len = strlen(qhead) + sizeof(QNICHOST_TAIL);
1.35 henning 295: if ((nserver = realloc(server, len)) == NULL)
1.18 millert 296: err(1, "realloc");
1.35 henning 297: server = nserver;
1.18 millert 298: strlcpy(server, qhead, len);
299: strlcat(server, QNICHOST_TAIL, len);
300: return (server);
1.1 deraadt 301: }
302:
1.34 henning 303: __dead void
1.17 millert 304: usage(void)
1.1 deraadt 305: {
1.18 millert 306: extern char *__progname;
1.7 millert 307:
1.34 henning 308: fprintf(stderr,
1.43 ! jmc 309: "usage: %s [-AadgilmQRr] [-c country-code | -h host] "
1.22 millert 310: "[-p port] name ...\n", __progname);
1.18 millert 311: exit(1);
1.1 deraadt 312: }
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