Annotation of src/usr.bin/whois/whois.c, Revision 1.52
1.52 ! sthen 1: /* $OpenBSD: whois.c,v 1.51 2015/11/02 17:16:35 mmcc 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"
1.52 ! sthen 61: #define IANAHOST "whois.iana.org"
1.6 deraadt 62: #define QNICHOST_TAIL ".whois-servers.net"
1.22 millert 63:
64: #define WHOIS_PORT "whois"
1.24 millert 65: #define WHOIS_SERVER_ID "Whois Server:"
1.1 deraadt 66:
1.8 millert 67: #define WHOIS_RECURSE 0x01
1.22 millert 68: #define WHOIS_QUICK 0x02
69:
1.35 henning 70: const char *port_whois = WHOIS_PORT;
1.41 henning 71: const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
72: AFNICHOST, NULL };
1.8 millert 73:
1.34 henning 74: __dead void usage(void);
75: int whois(const char *, const char *, const char *, int);
76: char *choose_server(const char *, const char *);
1.1 deraadt 77:
78: int
1.27 deraadt 79: main(int argc, char *argv[])
1.1 deraadt 80: {
1.18 millert 81: int ch, flags, rval;
1.39 millert 82: char *host, *name, *country;
1.1 deraadt 83:
1.39 millert 84: country = host = NULL;
1.18 millert 85: flags = rval = 0;
1.52 ! sthen 86: while ((ch = getopt(argc, argv, "aAc:dgh:iIlmp:PqQrR")) != -1)
1.34 henning 87: switch (ch) {
1.4 deraadt 88: case 'a':
89: host = ANICHOST;
90: break;
1.22 millert 91: case 'A':
92: host = PNICHOST;
93: break;
1.18 millert 94: case 'c':
95: country = optarg;
96: break;
1.4 deraadt 97: case 'd':
98: host = DNICHOST;
99: break;
1.7 millert 100: case 'g':
101: host = GNICHOST;
102: break;
1.1 deraadt 103: case 'h':
104: host = optarg;
105: break;
1.7 millert 106: case 'i':
107: host = INICHOST;
108: break;
1.52 ! sthen 109: case 'I':
! 110: host = IANAHOST;
! 111: break;
1.16 fgsch 112: case 'l':
113: host = LNICHOST;
114: break;
1.6 deraadt 115: case 'm':
116: host = MNICHOST;
117: break;
1.4 deraadt 118: case 'p':
1.35 henning 119: port_whois = optarg;
1.4 deraadt 120: break;
1.44 sthen 121: case 'P':
122: host = PDBHOST;
123: break;
1.6 deraadt 124: case 'q':
1.22 millert 125: /* deprecated, now the default */
1.8 millert 126: break;
127: case 'Q':
128: flags |= WHOIS_QUICK;
1.6 deraadt 129: break;
1.4 deraadt 130: case 'r':
131: host = RNICHOST;
132: break;
1.7 millert 133: case 'R':
134: host = RUNICHOST;
1.18 millert 135: break;
1.1 deraadt 136: default:
137: usage();
138: }
139: argc -= optind;
140: argv += optind;
141:
1.18 millert 142: if (!argc || (country != NULL && host != NULL))
1.1 deraadt 143: usage();
1.49 deraadt 144:
1.50 deraadt 145: if (pledge("stdio dns inet", NULL) == -1)
146: err(1, "pledge");
1.1 deraadt 147:
1.18 millert 148: if (host == NULL && country == NULL && !(flags & WHOIS_QUICK))
1.22 millert 149: flags |= WHOIS_RECURSE;
1.18 millert 150: for (name = *argv; (name = *argv) != NULL; argv++)
1.22 millert 151: rval += whois(name, host ? host : choose_server(name, country),
1.35 henning 152: port_whois, flags);
1.17 millert 153: exit(rval);
1.8 millert 154: }
155:
1.34 henning 156: int
1.22 millert 157: whois(const char *query, const char *server, const char *port, int flags)
1.8 millert 158: {
1.46 millert 159: FILE *fp;
1.32 henning 160: char *buf, *p, *nhost, *nbuf = NULL;
1.8 millert 161: size_t len;
1.22 millert 162: int i, s, error;
1.32 henning 163: const char *reason = NULL, *fmt;
1.20 millert 164: struct addrinfo hints, *res, *ai;
1.18 millert 165:
166: memset(&hints, 0, sizeof(hints));
167: hints.ai_flags = 0;
168: hints.ai_family = AF_UNSPEC;
169: hints.ai_socktype = SOCK_STREAM;
1.22 millert 170: error = getaddrinfo(server, port, &hints, &res);
1.18 millert 171: if (error) {
1.29 deraadt 172: if (error == EAI_SERVICE)
173: warnx("%s: bad port", port);
174: else
175: warnx("%s: %s", server, gai_strerror(error));
1.18 millert 176: return (1);
177: }
1.6 deraadt 178:
1.20 millert 179: for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
180: s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1.34 henning 181: if (s == -1) {
1.35 henning 182: error = errno;
1.11 itojun 183: reason = "socket";
184: continue;
185: }
1.34 henning 186: if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
1.35 henning 187: error = errno;
1.11 itojun 188: reason = "connect";
189: close(s);
190: s = -1;
191: continue;
192: }
193: break; /*okay*/
194: }
1.34 henning 195: if (s == -1) {
1.35 henning 196: if (reason) {
197: errno = error;
1.24 millert 198: warn("%s: %s", server, reason);
1.35 henning 199: } else
1.17 millert 200: warn("unknown error in connection attempt");
1.18 millert 201: freeaddrinfo(res);
202: return (1);
1.11 itojun 203: }
1.4 deraadt 204:
1.32 henning 205: if (strcmp(server, "whois.denic.de") == 0 ||
1.37 mk 206: strcmp(server, "de" QNICHOST_TAIL) == 0)
1.36 henning 207: fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
1.37 mk 208: else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
209: strcmp(server, "dk" QNICHOST_TAIL) == 0)
210: fmt = "--show-handles %s\r\n";
1.32 henning 211: else
212: fmt = "%s\r\n";
1.31 henning 213:
1.46 millert 214: fp = fdopen(s, "r+");
215: if (fp == NULL)
1.18 millert 216: err(1, "fdopen");
1.46 millert 217: fprintf(fp, fmt, query);
218: fflush(fp);
1.8 millert 219: nhost = NULL;
1.46 millert 220: while ((buf = fgetln(fp, &len)) != NULL) {
1.22 millert 221: p = buf + len - 1;
222: if (isspace((unsigned char)*p)) {
223: do
1.28 fgsch 224: *p = '\0';
225: while (p > buf && isspace((unsigned char)*--p));
1.22 millert 226: } else {
1.17 millert 227: if ((nbuf = malloc(len + 1)) == NULL)
228: err(1, "malloc");
1.12 millert 229: memcpy(nbuf, buf, len);
230: nbuf[len] = '\0';
231: buf = nbuf;
232: }
1.34 henning 233: puts(buf);
1.8 millert 234:
1.22 millert 235: if (nhost != NULL || !(flags & WHOIS_RECURSE))
236: continue;
237:
238: if ((p = strstr(buf, WHOIS_SERVER_ID))) {
239: p += sizeof(WHOIS_SERVER_ID) - 1;
1.45 deraadt 240: while (isblank((unsigned char)*p))
1.25 millert 241: p++;
1.8 millert 242: if ((len = strcspn(p, " \t\n\r"))) {
243: if ((nhost = malloc(len + 1)) == NULL)
244: err(1, "malloc");
245: memcpy(nhost, p, len);
246: nhost[len] = '\0';
247: }
1.22 millert 248: } else if (strcmp(server, ANICHOST) == 0) {
249: for (p = buf; *p != '\0'; p++)
250: *p = tolower((unsigned char)*p);
251: for (i = 0; ip_whois[i] != NULL; i++) {
252: if (strstr(buf, ip_whois[i]) != NULL) {
253: nhost = strdup(ip_whois[i]);
1.23 millert 254: if (nhost == NULL)
255: err(1, "strdup");
1.22 millert 256: break;
257: }
258: }
1.8 millert 259: }
260: }
1.46 millert 261: fclose(fp);
1.32 henning 262: if (nbuf != NULL)
263: free(nbuf);
1.8 millert 264:
1.22 millert 265: if (nhost != NULL) {
266: error = whois(query, nhost, port, 0);
267: free(nhost);
1.8 millert 268: }
1.18 millert 269: freeaddrinfo(res);
270: return (error);
271: }
272:
273: /*
274: * If no country is specified determine the top level domain from the query.
1.19 millert 275: * If the TLD is a number, query ARIN, otherwise, use TLD.whois-server.net.
276: * If the domain does not contain '.', check to see if it is an NSI handle
1.38 henning 277: * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an
278: * ASN (starts with AS). Fall back to NICHOST for the non-handle case.
1.18 millert 279: */
1.34 henning 280: char *
1.18 millert 281: choose_server(const char *name, const char *country)
282: {
283: static char *server;
284: const char *qhead;
1.35 henning 285: char *nserver;
1.19 millert 286: char *ep;
1.18 millert 287: size_t len;
1.47 sthen 288: struct addrinfo hints, *res;
289:
290: memset(&hints, 0, sizeof(hints));
291: hints.ai_flags = 0;
292: hints.ai_family = AF_UNSPEC;
293: hints.ai_socktype = SOCK_STREAM;
1.18 millert 294:
295: if (country != NULL)
296: qhead = country;
1.19 millert 297: else if ((qhead = strrchr(name, '.')) == NULL) {
298: if (*name == '!')
1.22 millert 299: return (INICHOST);
1.19 millert 300: else if ((strncasecmp(name, "COCO-", 5) == 0 ||
301: strncasecmp(name, "COHO-", 5) == 0) &&
302: strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
1.34 henning 303: return (CNICHOST);
1.38 henning 304: else if ((strncasecmp(name, "AS", 2) == 0) &&
305: strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
306: return (MNICHOST);
1.19 millert 307: else
308: return (NICHOST);
1.51 mmcc 309: } else if (isdigit((unsigned char)*(++qhead)))
1.18 millert 310: return (ANICHOST);
311: len = strlen(qhead) + sizeof(QNICHOST_TAIL);
1.35 henning 312: if ((nserver = realloc(server, len)) == NULL)
1.18 millert 313: err(1, "realloc");
1.35 henning 314: server = nserver;
1.47 sthen 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: */
1.48 sthen 320: snprintf(server, len, "whois.nic.%s", qhead);
1.47 sthen 321:
322: /* most ccTLDs don't do this, but QNICHOST/whois-servers mostly works */
323: if ((strlen(qhead) == 2 ||
324: /* and is required for most of the <=2003 TLDs/gTLDs */
1.48 sthen 325: strcasecmp(qhead, "org") == 0 ||
326: strcasecmp(qhead, "com") == 0 ||
327: strcasecmp(qhead, "net") == 0 ||
328: strcasecmp(qhead, "cat") == 0 ||
329: strcasecmp(qhead, "pro") == 0 ||
330: strcasecmp(qhead, "info") == 0 ||
331: strcasecmp(qhead, "aero") == 0 ||
332: strcasecmp(qhead, "jobs") == 0 ||
333: strcasecmp(qhead, "mobi") == 0 ||
334: strcasecmp(qhead, "museum") == 0 ||
1.47 sthen 335: /* for others, if whois.nic.TLD doesn't exist, try whois-servers */
336: getaddrinfo(server, NULL, &hints, &res) != 0)) {
337: strlcpy(server, qhead, len);
338: strlcat(server, QNICHOST_TAIL, len);
339: }
340:
1.18 millert 341: return (server);
1.1 deraadt 342: }
343:
1.34 henning 344: __dead void
1.17 millert 345: usage(void)
1.1 deraadt 346: {
1.18 millert 347: extern char *__progname;
1.7 millert 348:
1.34 henning 349: fprintf(stderr,
1.52 ! sthen 350: "usage: %s [-AadgIilmPQRr] [-c country-code | -h host] "
1.22 millert 351: "[-p port] name ...\n", __progname);
1.18 millert 352: exit(1);
1.1 deraadt 353: }