Annotation of src/usr.bin/whois/whois.c, Revision 1.35
1.35 ! henning 1: /* $OpenBSD: whois.c,v 1.34 2005/06/25 14:27:36 henning 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"
1.18 millert 58: #define SNICHOST "whois.6bone.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;
1.22 millert 69: const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST, NULL };
1.8 millert 70:
1.34 henning 71: __dead void usage(void);
72: int whois(const char *, const char *, const char *, int);
73: char *choose_server(const char *, const char *);
1.1 deraadt 74:
75: int
1.27 deraadt 76: main(int argc, char *argv[])
1.1 deraadt 77: {
1.18 millert 78: int ch, flags, rval;
79: char *host, *name, *country, *server;
1.1 deraadt 80:
1.18 millert 81: country = host = server = NULL;
82: flags = rval = 0;
1.22 millert 83: while ((ch = getopt(argc, argv, "aAc:dgh:ilmp:qQrR6")) != -1)
1.34 henning 84: switch (ch) {
1.4 deraadt 85: case 'a':
86: host = ANICHOST;
87: break;
1.22 millert 88: case 'A':
89: host = PNICHOST;
90: break;
1.18 millert 91: case 'c':
92: country = optarg;
93: break;
1.4 deraadt 94: case 'd':
95: host = DNICHOST;
96: break;
1.7 millert 97: case 'g':
98: host = GNICHOST;
99: break;
1.1 deraadt 100: case 'h':
101: host = optarg;
102: break;
1.7 millert 103: case 'i':
104: host = INICHOST;
105: break;
1.16 fgsch 106: case 'l':
107: host = LNICHOST;
108: break;
1.6 deraadt 109: case 'm':
110: host = MNICHOST;
111: break;
1.4 deraadt 112: case 'p':
1.35 ! henning 113: port_whois = optarg;
1.4 deraadt 114: break;
1.6 deraadt 115: case 'q':
1.22 millert 116: /* deprecated, now the default */
1.8 millert 117: break;
118: case 'Q':
119: flags |= WHOIS_QUICK;
1.6 deraadt 120: break;
1.4 deraadt 121: case 'r':
122: host = RNICHOST;
123: break;
1.7 millert 124: case 'R':
125: host = RUNICHOST;
126: break;
1.18 millert 127: case '6':
128: host = SNICHOST;
129: break;
1.1 deraadt 130: default:
131: usage();
132: }
133: argc -= optind;
134: argv += optind;
135:
1.18 millert 136: if (!argc || (country != NULL && host != NULL))
1.1 deraadt 137: usage();
138:
1.18 millert 139: if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
1.22 millert 140: flags |= WHOIS_RECURSE;
1.18 millert 141: for (name = *argv; (name = *argv) != NULL; argv++)
1.22 millert 142: rval += whois(name, host ? host : choose_server(name, country),
1.35 ! henning 143: port_whois, flags);
1.17 millert 144: exit(rval);
1.8 millert 145: }
146:
1.34 henning 147: int
1.22 millert 148: whois(const char *query, const char *server, const char *port, int flags)
1.8 millert 149: {
150: FILE *sfi, *sfo;
1.32 henning 151: char *buf, *p, *nhost, *nbuf = NULL;
1.8 millert 152: size_t len;
1.22 millert 153: int i, s, error;
1.32 henning 154: const char *reason = NULL, *fmt;
1.20 millert 155: struct addrinfo hints, *res, *ai;
1.18 millert 156:
157: memset(&hints, 0, sizeof(hints));
158: hints.ai_flags = 0;
159: hints.ai_family = AF_UNSPEC;
160: hints.ai_socktype = SOCK_STREAM;
1.22 millert 161: error = getaddrinfo(server, port, &hints, &res);
1.18 millert 162: if (error) {
1.29 deraadt 163: if (error == EAI_SERVICE)
164: warnx("%s: bad port", port);
165: else
166: warnx("%s: %s", server, gai_strerror(error));
1.18 millert 167: return (1);
168: }
1.6 deraadt 169:
1.20 millert 170: for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
171: s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1.34 henning 172: if (s == -1) {
1.35 ! henning 173: error = errno;
1.11 itojun 174: reason = "socket";
175: continue;
176: }
1.34 henning 177: if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
1.35 ! henning 178: error = errno;
1.11 itojun 179: reason = "connect";
180: close(s);
181: s = -1;
182: continue;
183: }
184: break; /*okay*/
185: }
1.34 henning 186: if (s == -1) {
1.35 ! henning 187: if (reason) {
! 188: errno = error;
1.24 millert 189: warn("%s: %s", server, reason);
1.35 ! henning 190: } else
1.17 millert 191: warn("unknown error in connection attempt");
1.18 millert 192: freeaddrinfo(res);
193: return (1);
1.11 itojun 194: }
1.4 deraadt 195:
1.32 henning 196: if (strcmp(server, "whois.denic.de") == 0 ||
197: strcmp(server, "de.whois-servers.net") == 0)
198: fmt = "-T dn %s\r\n";
199: else
200: fmt = "%s\r\n";
1.31 henning 201:
1.1 deraadt 202: sfi = fdopen(s, "r");
203: sfo = fdopen(s, "w");
1.4 deraadt 204: if (sfi == NULL || sfo == NULL)
1.18 millert 205: err(1, "fdopen");
1.34 henning 206: fprintf(sfo, fmt, query);
207: fflush(sfo);
1.8 millert 208: nhost = NULL;
1.22 millert 209: while ((buf = fgetln(sfi, &len)) != NULL) {
210: p = buf + len - 1;
211: if (isspace((unsigned char)*p)) {
212: do
1.28 fgsch 213: *p = '\0';
214: while (p > buf && isspace((unsigned char)*--p));
1.22 millert 215: } else {
1.17 millert 216: if ((nbuf = malloc(len + 1)) == NULL)
217: err(1, "malloc");
1.12 millert 218: memcpy(nbuf, buf, len);
219: nbuf[len] = '\0';
220: buf = nbuf;
221: }
1.34 henning 222: puts(buf);
1.8 millert 223:
1.22 millert 224: if (nhost != NULL || !(flags & WHOIS_RECURSE))
225: continue;
226:
227: if ((p = strstr(buf, WHOIS_SERVER_ID))) {
228: p += sizeof(WHOIS_SERVER_ID) - 1;
1.25 millert 229: while (isblank(*p))
230: p++;
1.8 millert 231: if ((len = strcspn(p, " \t\n\r"))) {
232: if ((nhost = malloc(len + 1)) == NULL)
233: err(1, "malloc");
234: memcpy(nhost, p, len);
235: nhost[len] = '\0';
236: }
1.22 millert 237: } else if (strcmp(server, ANICHOST) == 0) {
238: for (p = buf; *p != '\0'; p++)
239: *p = tolower((unsigned char)*p);
240: for (i = 0; ip_whois[i] != NULL; i++) {
241: if (strstr(buf, ip_whois[i]) != NULL) {
242: nhost = strdup(ip_whois[i]);
1.23 millert 243: if (nhost == NULL)
244: err(1, "strdup");
1.22 millert 245: break;
246: }
247: }
1.8 millert 248: }
249: }
1.32 henning 250: if (nbuf != NULL)
251: free(nbuf);
1.8 millert 252:
1.22 millert 253: if (nhost != NULL) {
254: error = whois(query, nhost, port, 0);
255: free(nhost);
1.8 millert 256: }
1.18 millert 257: freeaddrinfo(res);
258: return (error);
259: }
260:
261: /*
262: * If no country is specified determine the top level domain from the query.
1.19 millert 263: * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
264: * If the domain does not contain '.', check to see if it is an NSI handle
265: * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+).
266: * Fall back to NICHOST for the non-handle case.
1.18 millert 267: */
1.34 henning 268: char *
1.18 millert 269: choose_server(const char *name, const char *country)
270: {
271: static char *server;
272: const char *qhead;
1.35 ! henning 273: char *nserver;
1.19 millert 274: char *ep;
1.18 millert 275: size_t len;
276:
277: if (country != NULL)
278: qhead = country;
1.19 millert 279: else if ((qhead = strrchr(name, '.')) == NULL) {
280: if (*name == '!')
1.22 millert 281: return (INICHOST);
1.19 millert 282: else if ((strncasecmp(name, "COCO-", 5) == 0 ||
283: strncasecmp(name, "COHO-", 5) == 0) &&
284: strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
1.34 henning 285: return (CNICHOST);
1.19 millert 286: else
287: return (NICHOST);
288: } else if (isdigit(*(++qhead)))
1.18 millert 289: return (ANICHOST);
290: len = strlen(qhead) + sizeof(QNICHOST_TAIL);
1.35 ! henning 291: if ((nserver = realloc(server, len)) == NULL)
1.18 millert 292: err(1, "realloc");
1.35 ! henning 293: server = nserver;
1.18 millert 294: strlcpy(server, qhead, len);
295: strlcat(server, QNICHOST_TAIL, len);
296: return (server);
1.1 deraadt 297: }
298:
1.34 henning 299: __dead void
1.17 millert 300: usage(void)
1.1 deraadt 301: {
1.18 millert 302: extern char *__progname;
1.7 millert 303:
1.34 henning 304: fprintf(stderr,
1.30 jmc 305: "usage: %s [-6AadgilmQRr] [-c country-code | -h hostname] "
1.22 millert 306: "[-p port] name ...\n", __progname);
1.18 millert 307: exit(1);
1.1 deraadt 308: }
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