/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1980 Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)whois.c 5.9 (Berkeley) 6/1/90"; #endif /* not lint */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> #include <stdio.h> #define NICHOST "nic.ddn.mil" main(argc, argv) int argc; char **argv; { extern char *optarg; extern int optind; register FILE *sfi, *sfo; register int ch; struct sockaddr_in sin; struct hostent *hp; struct servent *sp; int s; char *host; host = NICHOST; while ((ch = getopt(argc, argv, "h:")) != EOF) switch((char)ch) { case 'h': host = optarg; break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 1) usage(); hp = gethostbyname(host); if (hp == NULL) { (void)fprintf(stderr, "whois: %s: ", host); herror((char *)NULL); exit(1); } host = hp->h_name; s = socket(hp->h_addrtype, SOCK_STREAM, 0); if (s < 0) { perror("whois: socket"); exit(2); } bzero((caddr_t)&sin, sizeof (sin)); sin.sin_family = hp->h_addrtype; if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { perror("whois: bind"); exit(3); } bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length); sp = getservbyname("whois", "tcp"); if (sp == NULL) { (void)fprintf(stderr, "whois: whois/tcp: unknown service\n"); exit(4); } sin.sin_port = sp->s_port; if (connect(s, &sin, sizeof(sin)) < 0) { perror("whois: connect"); exit(5); } sfi = fdopen(s, "r"); sfo = fdopen(s, "w"); if (sfi == NULL || sfo == NULL) { perror("whois: fdopen"); (void)close(s); exit(1); } (void)fprintf(sfo, "%s\r\n", *argv); (void)fflush(sfo); while ((ch = getc(sfi)) != EOF) putchar(ch); exit(0); } static usage() { (void)fprintf(stderr, "usage: whois [-h host] name\n"); exit(1); }