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1.1 root 1: #ifndef lint
2: static char sccsid[] = "@(#)whois.c 4.2 83/06/10";
3: #endif
4:
5: #include <sys/types.h>
6: #include <sys/socket.h>
7:
8: #include <netinet/in.h>
9:
10: #include <stdio.h>
11: #include <netdb.h>
12:
13: #define NICHOST "sri-nic"
14:
15: main(argc, argv)
16: int argc;
17: char *argv[];
18: {
19: int s;
20: register FILE *sfi, *sfo;
21: register char c;
22: char *host = NICHOST;
23: struct sockaddr_in sin;
24: struct hostent *hp;
25: struct servent *sp;
26:
27: argc--, argv++;
28: if (argc > 2 && strcmp(*argv, "-h") == 0) {
29: argv++, argc--;
30: host = *argv++;
31: argc--;
32: }
33: if (argc != 1) {
34: fprintf(stderr, "usage: whois [ -h host ] name\n");
35: exit(1);
36: }
37: hp = gethostbyname(host);
38: if (hp == NULL) {
39: fprintf(stderr, "whois: %s: host unknown\n", host);
40: exit(1);
41: }
42: host = hp->h_name;
43: s = socket(hp->h_addrtype, SOCK_STREAM, 0, 0);
44: if (s < 0) {
45: perror("whois: socket");
46: exit(2);
47: }
48: sin.sin_family = hp->h_addrtype;
49: if (bind(s, &sin, sizeof (sin), 0) < 0) {
50: perror("whois: bind");
51: exit(3);
52: }
53: bcopy(hp->h_addr, &sin.sin_addr, hp->h_length);
54: sp = getservbyname("whois", "tcp");
55: if (sp == NULL) {
56: fprintf(stderr, "whois: whois/tcp: unknown service\n");
57: exit(4);
58: }
59: sin.sin_port = sp->s_port;
60: if (connect(s, &sin, sizeof (sin), 0) < 0) {
61: perror("whois: connect");
62: exit(5);
63: }
64: sfi = fdopen(s, "r");
65: sfo = fdopen(s, "w");
66: if (sfi == NULL || sfo == NULL) {
67: perror("fdopen");
68: close(s);
69: exit(1);
70: }
71: fprintf(sfo, "%s\r\n", *argv);
72: fflush(sfo);
73: while ((c = getc(sfi)) != EOF)
74: putchar(c);
75: }
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