diff options
Diffstat (limited to 'usr.bin/whois/whois.c')
| -rw-r--r-- | usr.bin/whois/whois.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/usr.bin/whois/whois.c b/usr.bin/whois/whois.c new file mode 100644 index 0000000..77d6c50 --- /dev/null +++ b/usr.bin/whois/whois.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 1980, 1993 + * The 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 +static char copyright[] = +"@(#) Copyright (c) 1980, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <netdb.h> +#include <stdio.h> + +#define NICHOST "whois.internic.net" + +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); +} |
