Annotation of src/usr.bin/whois/whois.c, Revision 1.59
1.59 ! millert 1: /* $OpenBSD: whois.c,v 1.58 2018/06/19 11:28:11 jca 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"
1.59 ! millert 48: #define INICHOST "whois.internic.net"
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"
1.56 sthen 65: #define WHOIS_SERVER_ID "Registrar 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);
1.55 millert 76: char *choose_server(const char *, const char *, 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;
1.55 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;
1.54 millert 150: for (name = *argv; (name = *argv) != NULL; argv++) {
1.55 millert 151: char *tofree = NULL;
152: const char *server =
153: host ? host : choose_server(name, country, &tofree);
1.54 millert 154: rval += whois(name, server, port_whois, flags);
1.55 millert 155: free(tofree);
1.54 millert 156: }
157: return (rval);
1.8 millert 158: }
159:
1.34 henning 160: int
1.22 millert 161: whois(const char *query, const char *server, const char *port, int flags)
1.8 millert 162: {
1.46 millert 163: FILE *fp;
1.32 henning 164: char *buf, *p, *nhost, *nbuf = NULL;
1.8 millert 165: size_t len;
1.22 millert 166: int i, s, error;
1.32 henning 167: const char *reason = NULL, *fmt;
1.20 millert 168: struct addrinfo hints, *res, *ai;
1.18 millert 169:
170: memset(&hints, 0, sizeof(hints));
171: hints.ai_flags = 0;
172: hints.ai_family = AF_UNSPEC;
173: hints.ai_socktype = SOCK_STREAM;
1.22 millert 174: error = getaddrinfo(server, port, &hints, &res);
1.18 millert 175: if (error) {
1.29 deraadt 176: if (error == EAI_SERVICE)
177: warnx("%s: bad port", port);
178: else
179: warnx("%s: %s", server, gai_strerror(error));
1.18 millert 180: return (1);
181: }
1.6 deraadt 182:
1.20 millert 183: for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
184: s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1.34 henning 185: if (s == -1) {
1.35 henning 186: error = errno;
1.11 itojun 187: reason = "socket";
188: continue;
189: }
1.34 henning 190: if (connect(s, ai->ai_addr, ai->ai_addrlen) == -1) {
1.35 henning 191: error = errno;
1.11 itojun 192: reason = "connect";
193: close(s);
194: s = -1;
195: continue;
196: }
197: break; /*okay*/
198: }
1.58 jca 199: freeaddrinfo(res);
1.34 henning 200: if (s == -1) {
1.35 henning 201: if (reason) {
202: errno = error;
1.24 millert 203: warn("%s: %s", server, reason);
1.35 henning 204: } else
1.17 millert 205: warn("unknown error in connection attempt");
1.18 millert 206: return (1);
1.11 itojun 207: }
1.4 deraadt 208:
1.32 henning 209: if (strcmp(server, "whois.denic.de") == 0 ||
1.37 mk 210: strcmp(server, "de" QNICHOST_TAIL) == 0)
1.36 henning 211: fmt = "-T dn,ace -C ISO-8859-1 %s\r\n";
1.37 mk 212: else if (strcmp(server, "whois.dk-hostmaster.dk") == 0 ||
213: strcmp(server, "dk" QNICHOST_TAIL) == 0)
214: fmt = "--show-handles %s\r\n";
1.32 henning 215: else
216: fmt = "%s\r\n";
1.31 henning 217:
1.46 millert 218: fp = fdopen(s, "r+");
219: if (fp == NULL)
1.18 millert 220: err(1, "fdopen");
1.46 millert 221: fprintf(fp, fmt, query);
222: fflush(fp);
1.8 millert 223: nhost = NULL;
1.46 millert 224: while ((buf = fgetln(fp, &len)) != NULL) {
1.22 millert 225: p = buf + len - 1;
226: if (isspace((unsigned char)*p)) {
227: do
1.28 fgsch 228: *p = '\0';
229: while (p > buf && isspace((unsigned char)*--p));
1.22 millert 230: } else {
1.17 millert 231: if ((nbuf = malloc(len + 1)) == NULL)
232: err(1, "malloc");
1.12 millert 233: memcpy(nbuf, buf, len);
234: nbuf[len] = '\0';
235: buf = nbuf;
236: }
1.34 henning 237: puts(buf);
1.8 millert 238:
1.22 millert 239: if (nhost != NULL || !(flags & WHOIS_RECURSE))
240: continue;
241:
242: if ((p = strstr(buf, WHOIS_SERVER_ID))) {
243: p += sizeof(WHOIS_SERVER_ID) - 1;
1.45 deraadt 244: while (isblank((unsigned char)*p))
1.25 millert 245: p++;
1.8 millert 246: if ((len = strcspn(p, " \t\n\r"))) {
247: if ((nhost = malloc(len + 1)) == NULL)
248: err(1, "malloc");
249: memcpy(nhost, p, len);
250: nhost[len] = '\0';
251: }
1.22 millert 252: } else if (strcmp(server, ANICHOST) == 0) {
253: for (p = buf; *p != '\0'; p++)
254: *p = tolower((unsigned char)*p);
255: for (i = 0; ip_whois[i] != NULL; i++) {
256: if (strstr(buf, ip_whois[i]) != NULL) {
257: nhost = strdup(ip_whois[i]);
1.23 millert 258: if (nhost == NULL)
259: err(1, "strdup");
1.22 millert 260: break;
261: }
262: }
1.8 millert 263: }
264: }
1.46 millert 265: fclose(fp);
1.53 mmcc 266: free(nbuf);
1.8 millert 267:
1.22 millert 268: if (nhost != NULL) {
269: error = whois(query, nhost, port, 0);
270: free(nhost);
1.8 millert 271: }
1.58 jca 272:
1.18 millert 273: return (error);
274: }
275:
276: /*
277: * If no country is specified determine the top level domain from the query.
1.19 millert 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
1.38 henning 280: * (starts with '!') or a CORE handle (COCO-[0-9]+ or COHO-[0-9]+) or an
1.57 florian 281: * ASN (starts with AS) or IPv6 address (contains ':'). Fall back to
282: * NICHOST for the non-handle and non-IPv6 case.
1.18 millert 283: */
1.34 henning 284: char *
1.55 millert 285: choose_server(const char *name, const char *country, char **tofree)
1.18 millert 286: {
1.54 millert 287: char *server;
1.18 millert 288: const char *qhead;
1.19 millert 289: char *ep;
1.58 jca 290: struct addrinfo hints, *res = NULL;
1.47 sthen 291:
292: memset(&hints, 0, sizeof(hints));
293: hints.ai_flags = 0;
294: hints.ai_family = AF_UNSPEC;
295: hints.ai_socktype = SOCK_STREAM;
1.18 millert 296:
297: if (country != NULL)
298: qhead = country;
1.19 millert 299: else if ((qhead = strrchr(name, '.')) == NULL) {
300: if (*name == '!')
1.22 millert 301: return (INICHOST);
1.19 millert 302: else if ((strncasecmp(name, "COCO-", 5) == 0 ||
303: strncasecmp(name, "COHO-", 5) == 0) &&
304: strtol(name + 5, &ep, 10) > 0 && *ep == '\0')
1.34 henning 305: return (CNICHOST);
1.38 henning 306: else if ((strncasecmp(name, "AS", 2) == 0) &&
307: strtol(name + 2, &ep, 10) > 0 && *ep == '\0')
308: return (MNICHOST);
1.57 florian 309: else if (strchr(name, ':') != NULL) /* IPv6 address */
310: return (ANICHOST);
1.19 millert 311: else
312: return (NICHOST);
1.51 mmcc 313: } else if (isdigit((unsigned char)*(++qhead)))
1.18 millert 314: return (ANICHOST);
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: */
1.54 millert 320: if (asprintf(&server, "whois.nic.%s", qhead) == -1)
321: err(1, NULL);
1.47 sthen 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 */
1.48 sthen 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 ||
1.47 sthen 336: /* for others, if whois.nic.TLD doesn't exist, try whois-servers */
337: getaddrinfo(server, NULL, &hints, &res) != 0)) {
1.54 millert 338: free(server);
339: if (asprintf(&server, "%s%s", qhead, QNICHOST_TAIL) == -1)
340: err(1, NULL);
1.47 sthen 341: }
1.58 jca 342: if (res != NULL)
343: freeaddrinfo(res);
1.47 sthen 344:
1.55 millert 345: *tofree = server;
1.18 millert 346: return (server);
1.1 deraadt 347: }
348:
1.34 henning 349: __dead void
1.17 millert 350: usage(void)
1.1 deraadt 351: {
1.18 millert 352: extern char *__progname;
1.7 millert 353:
1.34 henning 354: fprintf(stderr,
1.52 sthen 355: "usage: %s [-AadgIilmPQRr] [-c country-code | -h host] "
1.22 millert 356: "[-p port] name ...\n", __progname);
1.18 millert 357: exit(1);
1.1 deraadt 358: }
![[BACK]](/icons/back.gif){kind=icon}
Return to whois.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / whois