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00a258da WJ |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)whois.c 5.11 (Berkeley) 3/2/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/types.h> | |
45 | #include <sys/socket.h> | |
46 | #include <netinet/in.h> | |
47 | #include <netdb.h> | |
48 | #include <stdio.h> | |
49 | ||
50 | #define NICHOST "nic.ddn.mil" | |
51 | ||
52 | main(argc, argv) | |
53 | int argc; | |
54 | char **argv; | |
55 | { | |
56 | extern char *optarg; | |
57 | extern int optind; | |
58 | register FILE *sfi, *sfo; | |
59 | register int ch; | |
60 | struct sockaddr_in sin; | |
61 | struct hostent *hp; | |
62 | struct servent *sp; | |
63 | int s; | |
64 | char *host; | |
65 | ||
66 | host = NICHOST; | |
67 | while ((ch = getopt(argc, argv, "h:")) != EOF) | |
68 | switch((char)ch) { | |
69 | case 'h': | |
70 | host = optarg; | |
71 | break; | |
72 | case '?': | |
73 | default: | |
74 | usage(); | |
75 | } | |
76 | argc -= optind; | |
77 | argv += optind; | |
78 | ||
79 | if (!argc) | |
80 | usage(); | |
81 | ||
82 | hp = gethostbyname(host); | |
83 | if (hp == NULL) { | |
84 | (void)fprintf(stderr, "whois: %s: ", host); | |
85 | herror((char *)NULL); | |
86 | exit(1); | |
87 | } | |
88 | host = hp->h_name; | |
89 | s = socket(hp->h_addrtype, SOCK_STREAM, 0); | |
90 | if (s < 0) { | |
91 | perror("whois: socket"); | |
92 | exit(1); | |
93 | } | |
94 | bzero((caddr_t)&sin, sizeof (sin)); | |
95 | sin.sin_family = hp->h_addrtype; | |
96 | if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { | |
97 | perror("whois: bind"); | |
98 | exit(1); | |
99 | } | |
100 | bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length); | |
101 | sp = getservbyname("whois", "tcp"); | |
102 | if (sp == NULL) { | |
103 | (void)fprintf(stderr, "whois: whois/tcp: unknown service\n"); | |
104 | exit(1); | |
105 | } | |
106 | sin.sin_port = sp->s_port; | |
107 | if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { | |
108 | perror("whois: connect"); | |
109 | exit(1); | |
110 | } | |
111 | sfi = fdopen(s, "r"); | |
112 | sfo = fdopen(s, "w"); | |
113 | if (sfi == NULL || sfo == NULL) { | |
114 | perror("whois: fdopen"); | |
115 | (void)close(s); | |
116 | exit(1); | |
117 | } | |
118 | while (argc-- > 1) | |
119 | (void)fprintf(sfo, "%s ", *argv++); | |
120 | (void)fprintf(sfo, "%s\r\n", *argv); | |
121 | (void)fflush(sfo); | |
122 | while ((ch = getc(sfi)) != EOF) | |
123 | putchar(ch); | |
124 | exit(0); | |
125 | } | |
126 | ||
127 | usage() | |
128 | { | |
129 | (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n"); | |
130 | exit(1); | |
131 | } |