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[] = "from: @(#)whois.c 5.11 (Berkeley) 3/2/91";*/ 42 static char rcsid[] = "$Id: whois.c,v 1.4 1993/08/27 22:31:09 jtc Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/socket.h> 47 #include <netinet/in.h> 48 #include <netdb.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #define NICHOST "whois.internic.net" 55 56 static void usage(); 57 58 int 59 main(argc, argv) 60 int argc; 61 char **argv; 62 { 63 extern char *optarg; 64 extern int optind; 65 register FILE *sfi, *sfo; 66 register int ch; 67 struct sockaddr_in sin; 68 struct hostent *hp; 69 struct servent *sp; 70 int s; 71 char *host; 72 73 host = NICHOST; 74 while ((ch = getopt(argc, argv, "h:")) != EOF) 75 switch((char)ch) { 76 case 'h': 77 host = optarg; 78 break; 79 case '?': 80 default: 81 usage(); 82 } 83 argc -= optind; 84 argv += optind; 85 86 if (!argc) 87 usage(); 88 89 hp = gethostbyname(host); 90 if (hp == NULL) { 91 (void)fprintf(stderr, "whois: %s: ", host); 92 herror((char *)NULL); 93 exit(1); 94 } 95 host = hp->h_name; 96 s = socket(hp->h_addrtype, SOCK_STREAM, 0); 97 if (s < 0) { 98 perror("whois: socket"); 99 exit(1); 100 } 101 bzero((caddr_t)&sin, sizeof (sin)); 102 sin.sin_family = hp->h_addrtype; 103 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { 104 perror("whois: bind"); 105 exit(1); 106 } 107 bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length); 108 sp = getservbyname("whois", "tcp"); 109 if (sp == NULL) { 110 (void)fprintf(stderr, "whois: whois/tcp: unknown service\n"); 111 exit(1); 112 } 113 sin.sin_port = sp->s_port; 114 if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { 115 perror("whois: connect"); 116 exit(1); 117 } 118 sfi = fdopen(s, "r"); 119 sfo = fdopen(s, "w"); 120 if (sfi == NULL || sfo == NULL) { 121 perror("whois: fdopen"); 122 (void)close(s); 123 exit(1); 124 } 125 while (argc-- > 1) 126 (void)fprintf(sfo, "%s ", *argv++); 127 (void)fprintf(sfo, "%s\r\n", *argv); 128 (void)fflush(sfo); 129 while ((ch = getc(sfi)) != EOF) 130 putchar(ch); 131 exit(0); 132 } 133 134 static void 135 usage() 136 { 137 (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n"); 138 exit(1); 139 } 140