1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1980 Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)whois.c 5.12 (Berkeley) 05/24/93"; 16 #endif /* not lint */ 17 18 #include <sys/types.h> 19 #include <sys/socket.h> 20 #include <netinet/in.h> 21 #include <netdb.h> 22 #include <stdio.h> 23 24 #define NICHOST "whois.internic.net" 25 26 main(argc, argv) 27 int argc; 28 char **argv; 29 { 30 extern char *optarg; 31 extern int optind; 32 register FILE *sfi, *sfo; 33 register int ch; 34 struct sockaddr_in sin; 35 struct hostent *hp; 36 struct servent *sp; 37 int s; 38 char *host; 39 40 host = NICHOST; 41 while ((ch = getopt(argc, argv, "h:")) != EOF) 42 switch((char)ch) { 43 case 'h': 44 host = optarg; 45 break; 46 case '?': 47 default: 48 usage(); 49 } 50 argc -= optind; 51 argv += optind; 52 53 if (!argc) 54 usage(); 55 56 hp = gethostbyname(host); 57 if (hp == NULL) { 58 (void)fprintf(stderr, "whois: %s: ", host); 59 herror((char *)NULL); 60 exit(1); 61 } 62 host = hp->h_name; 63 s = socket(hp->h_addrtype, SOCK_STREAM, 0); 64 if (s < 0) { 65 perror("whois: socket"); 66 exit(1); 67 } 68 bzero((caddr_t)&sin, sizeof (sin)); 69 sin.sin_family = hp->h_addrtype; 70 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { 71 perror("whois: bind"); 72 exit(1); 73 } 74 bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length); 75 sp = getservbyname("whois", "tcp"); 76 if (sp == NULL) { 77 (void)fprintf(stderr, "whois: whois/tcp: unknown service\n"); 78 exit(1); 79 } 80 sin.sin_port = sp->s_port; 81 if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { 82 perror("whois: connect"); 83 exit(1); 84 } 85 sfi = fdopen(s, "r"); 86 sfo = fdopen(s, "w"); 87 if (sfi == NULL || sfo == NULL) { 88 perror("whois: fdopen"); 89 (void)close(s); 90 exit(1); 91 } 92 while (argc-- > 1) 93 (void)fprintf(sfo, "%s ", *argv++); 94 (void)fprintf(sfo, "%s\r\n", *argv); 95 (void)fflush(sfo); 96 while ((ch = getc(sfi)) != EOF) 97 putchar(ch); 98 exit(0); 99 } 100 101 usage() 102 { 103 (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n"); 104 exit(1); 105 } 106