Annotation of src/usr.bin/whois/whois.c, Revision 1.8
1.8 ! millert 1: /* $OpenBSD: whois.c,v 1.7 1999/11/15 01:46:41 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: whois.c,v 1.5 1994/11/14 05:13:25 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1980, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93";
46: #endif
1.8 ! millert 47: static char rcsid[] = "$OpenBSD: whois.c,v 1.7 1999/11/15 01:46:41 millert Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/types.h>
51: #include <sys/socket.h>
52: #include <netinet/in.h>
1.5 art 53: #include <arpa/inet.h>
1.1 deraadt 54: #include <netdb.h>
1.7 millert 55: #include <err.h>
1.1 deraadt 56: #include <stdio.h>
57: #include <stdlib.h>
58: #include <string.h>
1.4 deraadt 59: #include <sysexits.h>
1.1 deraadt 60: #include <unistd.h>
61:
1.7 millert 62: #define NICHOST "whois.crsnic.net"
63: #define INICHOST "whois.internic.net"
64: #define DNICHOST "whois.nic.mil"
65: #define GNICHOST "whois.nic.gov"
1.4 deraadt 66: #define ANICHOST "whois.arin.net"
67: #define RNICHOST "whois.ripe.net"
68: #define PNICHOST "whois.apnic.net"
1.7 millert 69: #define RUNICHOST "whois.ripn.net"
1.6 deraadt 70: #define MNICHOST "whois.ra.net"
71: #define QNICHOST_TAIL ".whois-servers.net"
1.4 deraadt 72: #define WHOIS_PORT 43
1.1 deraadt 73:
1.8 ! millert 74: #define WHOIS_RECURSE 0x01
! 75: #define WHOIS_INIC_FALLBACK 0x02
! 76: #define WHOIS_QUICK 0x04
! 77:
! 78: static void usage __P((void));
! 79: static void whois __P((char *, struct sockaddr_in *, int));
1.1 deraadt 80:
81: int
82: main(argc, argv)
83: int argc;
84: char **argv;
85: {
1.8 ! millert 86: int ch, i, j;
! 87: int use_qnichost, flags;
1.1 deraadt 88: char *host;
1.6 deraadt 89: char *qnichost;
1.8 ! millert 90: struct servent *sp;
! 91: struct hostent *hp;
! 92: struct sockaddr_in sin;
1.1 deraadt 93:
1.8 ! millert 94: host = NULL;
! 95: qnichost = NULL;
! 96: flags = 0;
1.6 deraadt 97: use_qnichost = 0;
1.8 ! millert 98: while ((ch = getopt(argc, argv, "adgh:impqQrR")) != -1)
1.1 deraadt 99: switch((char)ch) {
1.4 deraadt 100: case 'a':
101: host = ANICHOST;
102: break;
103: case 'd':
104: host = DNICHOST;
105: break;
1.7 millert 106: case 'g':
107: host = GNICHOST;
108: break;
1.1 deraadt 109: case 'h':
110: host = optarg;
111: break;
1.7 millert 112: case 'i':
113: host = INICHOST;
114: break;
1.6 deraadt 115: case 'm':
116: host = MNICHOST;
117: break;
1.4 deraadt 118: case 'p':
119: host = PNICHOST;
120: break;
1.6 deraadt 121: case 'q':
1.8 ! millert 122: /* default */
! 123: break;
! 124: case 'Q':
! 125: flags |= WHOIS_QUICK;
1.6 deraadt 126: break;
1.4 deraadt 127: case 'r':
128: host = RNICHOST;
129: break;
1.7 millert 130: case 'R':
131: host = RUNICHOST;
132: break;
1.1 deraadt 133: case '?':
134: default:
135: usage();
136: }
137: argc -= optind;
138: argv += optind;
139:
140: if (!argc)
141: usage();
142:
1.8 ! millert 143: memset(&sin, 0, sizeof sin);
! 144: sin.sin_len = sizeof(sin);
! 145: sin.sin_family = AF_INET;
! 146: sp = getservbyname("whois", "tcp");
! 147: if (sp == NULL)
! 148: sin.sin_port = htons(WHOIS_PORT);
! 149: else
! 150: sin.sin_port = sp->s_port;
! 151:
! 152: /*
! 153: * If no nic host is specified, use whois-servers.net
! 154: * if there is a '.' in the name, else fall back to NICHOST.
! 155: */
! 156: if (host == NULL) {
! 157: use_qnichost = 1;
! 158: host = NICHOST;
! 159: if (!(flags & WHOIS_QUICK))
! 160: flags |= WHOIS_INIC_FALLBACK | WHOIS_RECURSE;
! 161: }
! 162: while (argc--) {
! 163: if (use_qnichost) {
! 164: if (qnichost) {
! 165: free(qnichost);
! 166: qnichost = NULL;
! 167: }
1.6 deraadt 168: for (i = j = 0; (*argv)[i]; i++)
1.8 ! millert 169: if ((*argv)[i] == '.')
! 170: j = i;
1.6 deraadt 171: if (j != 0) {
1.8 ! millert 172: qnichost = (char *) calloc(i - j + 1 +
1.6 deraadt 173: strlen(QNICHOST_TAIL), sizeof(char));
174: if (!qnichost)
175: err(1, "malloc");
176: strcpy(qnichost, *argv + j + 1);
177: strcat(qnichost, QNICHOST_TAIL);
1.8 ! millert 178:
! 179: if (inet_aton(qnichost, &sin.sin_addr) == 0) {
! 180: hp = gethostbyname2(qnichost, AF_INET);
! 181: if (hp == NULL) {
! 182: free(qnichost);
! 183: qnichost = NULL;
! 184: } else {
! 185: sin.sin_addr = *(struct in_addr *)hp->h_addr_list[0];
! 186: }
! 187: }
1.6 deraadt 188: }
189: }
1.8 ! millert 190: if (!qnichost && inet_aton(host, &sin.sin_addr) == 0) {
! 191: hp = gethostbyname2(host, AF_INET);
! 192: if (hp == NULL)
! 193: errx(EX_NOHOST, "%s: %s", host,
! 194: hstrerror(h_errno));
! 195: host = hp->h_name;
! 196: sin.sin_addr = *(struct in_addr *)hp->h_addr_list[0];
! 197: }
! 198:
! 199: whois(*argv++, &sin, flags);
1.6 deraadt 200: }
1.8 ! millert 201: exit(0);
! 202: }
! 203:
! 204: static void
! 205: whois(name, sinp, flags)
! 206: char *name;
! 207: struct sockaddr_in *sinp;
! 208: int flags;
! 209: {
! 210: FILE *sfi, *sfo;
! 211: char *buf, *p, *nhost;
! 212: size_t len;
! 213: int s, nomatch;
1.6 deraadt 214:
1.4 deraadt 215: s = socket(PF_INET, SOCK_STREAM, 0);
216: if (s < 0)
217: err(EX_OSERR, "socket");
218:
1.8 ! millert 219: if (connect(s, (struct sockaddr *)sinp, sizeof(*sinp)) < 0)
1.4 deraadt 220: err(EX_OSERR, "connect");
221:
1.1 deraadt 222: sfi = fdopen(s, "r");
223: sfo = fdopen(s, "w");
1.4 deraadt 224: if (sfi == NULL || sfo == NULL)
225: err(EX_OSERR, "fdopen");
1.8 ! millert 226: (void)fprintf(sfo, "%s\r\n", name);
1.1 deraadt 227: (void)fflush(sfo);
1.8 ! millert 228: nhost = NULL;
! 229: nomatch = 0;
! 230: while ((buf = fgetln(sfi, &len))) {
! 231: if (buf[len - 2] == '\r')
! 232: buf[len - 2] = '\0';
! 233: else
! 234: buf[len - 1] = '\0';
! 235:
! 236: if ((flags & WHOIS_RECURSE) && !nhost &&
! 237: (p = strstr(buf, "Whois Server: "))) {
! 238: p += sizeof("Whois Server: ") - 1;
! 239: if ((len = strcspn(p, " \t\n\r"))) {
! 240: if ((nhost = malloc(len + 1)) == NULL)
! 241: err(1, "malloc");
! 242: memcpy(nhost, p, len);
! 243: nhost[len] = '\0';
! 244: }
! 245: }
! 246: if ((flags & WHOIS_INIC_FALLBACK) && !nhost && !nomatch &&
! 247: (p = strstr(buf, "No match for \""))) {
! 248: p += sizeof("No match for \"") - 1;
! 249: if ((len = strcspn(p, "\"")) &&
! 250: strncasecmp(name, p, len) == 0)
! 251: nomatch = 1;
! 252: }
! 253: (void)puts(buf);
! 254: }
! 255:
! 256: /* Do second lookup as needed */
! 257: if (nomatch && !nhost) {
! 258: (void)printf("Looking up %s at %s.\n\n", name, INICHOST);
! 259: nhost = INICHOST;
! 260: }
! 261: if (nhost) {
! 262: if (inet_aton(nhost, &sinp->sin_addr) == 0) {
! 263: struct hostent *hp = gethostbyname2(nhost, AF_INET);
! 264: if (hp == NULL)
! 265: return;
! 266: sinp->sin_addr = *(struct in_addr *)hp->h_addr_list[0];
! 267: }
! 268: if (!nomatch)
! 269: free(nhost);
! 270: whois(name, sinp, 0);
! 271: }
1.1 deraadt 272: }
273:
274: static void
275: usage()
276: {
1.7 millert 277:
278: (void)fprintf(stderr,
279: "usage: whois [-adgimpqrR] [-h hostname] name ...\n");
1.4 deraadt 280: exit(EX_USAGE);
1.1 deraadt 281: }
![[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