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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #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 5.11 (Berkeley) 3/2/91";
- #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)
- 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(1);
- }
- 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(1);
- }
- 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(1);
- }
- sin.sin_port = sp->s_port;
- if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
- perror("whois: connect");
- exit(1);
- }
- sfi = fdopen(s, "r");
- sfo = fdopen(s, "w");
- if (sfi == NULL || sfo == NULL) {
- perror("whois: fdopen");
- (void)close(s);
- exit(1);
- }
- while (argc-- > 1)
- (void)fprintf(sfo, "%s ", *argv++);
- (void)fprintf(sfo, "%s\r\n", *argv);
- (void)fflush(sfo);
- while ((ch = getc(sfi)) != EOF)
- putchar(ch);
- exit(0);
- }
-
- usage()
- {
- (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n");
- exit(1);
- }
-