1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28
29 /*
30 * University Copyright- Copyright (c) 1982, 1986, 1988
31 * The Regents of the University of California
32 * All Rights Reserved
33 *
34 * University Acknowledgment- Portions of this document are derived from
35 * software developed by the University of California, Berkeley, and its
36 * contributors.
37 */
38
39 #include <sys/types.h>
40 #include <sys/socket.h>
41
42 #include <netinet/in.h>
43
44 #include <stdio.h>
45 #include <netdb.h>
46 #include <string.h>
47 #include <stdlib.h>
48 #include <unistd.h>
49
50 #define NICHOST "whois.internic.net"
51
52 int
main(int argc,char * argv[])53 main(int argc, char *argv[])
54 {
55 int s, rv;
56 register FILE *sfi, *sfo;
57 register int c;
58 char *host = NICHOST;
59 struct addrinfo *ai_head, *ai;
60 struct addrinfo hints;
61
62 argc--, argv++;
63 if (argc > 2 && strcmp(*argv, "-h") == 0) {
64 argv++, argc--;
65 host = *argv++;
66 argc--;
67 }
68 if (argc != 1) {
69 (void) fprintf(stderr, "usage: whois [ -h host ] name\n");
70 exit(1);
71 }
72
73 memset(&hints, 0, sizeof (hints));
74 hints.ai_socktype = SOCK_STREAM;
75 hints.ai_protocol = IPPROTO_TCP;
76 hints.ai_flags = AI_ADDRCONFIG;
77 rv = getaddrinfo(host, "whois", &hints, &ai_head);
78 if (rv != 0) {
79 (void) fprintf(stderr, "whois: %s: %s\n", host,
80 gai_strerror(rv));
81 exit(1);
82 }
83
84 for (ai = ai_head; ai != NULL; ai = ai->ai_next) {
85 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
86 if (s >= 0) {
87 rv = connect(s, ai->ai_addr, ai->ai_addrlen);
88 if (rv < 0)
89 (void) close(s);
90 else
91 break;
92 }
93 }
94 if (ai_head != NULL)
95 freeaddrinfo(ai_head);
96
97 if (s < 0) {
98 perror("whois: socket");
99 exit(2);
100 } else if (rv < 0) {
101 perror("whois: connect");
102 exit(5);
103 }
104
105 sfi = fdopen(s, "r");
106 sfo = fdopen(s, "w");
107 if (sfi == NULL || sfo == NULL) {
108 perror("fdopen");
109 (void) close(s);
110 exit(1);
111 }
112 (void) fprintf(sfo, "%s\r\n", *argv);
113 (void) fflush(sfo);
114 while ((c = getc(sfi)) != EOF)
115 (void) putchar(c);
116 return (0);
117 }
118