cmd-inet/usr.bin/whois.c

	whois.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1994 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>

#include <stdio.h>
#include <netdb.h>

#ifdef SYSV
#define bcopy(a,b,c)    memcpy((b),(a),(c))
#endif /* SYSV */

#define NICHOST "whois.internic.net"

main(argc, argv)
    int argc;
    char *argv[];
{
    int s;
    register FILE *sfi, *sfo;
    register int c;
    char *host = NICHOST;
    struct sockaddr_in sin;
    struct hostent *hp;
    struct servent *sp;
    char hnamebuf[32];
    int addrtype;

    argc--, argv++;
    if (argc > 2 && strcmp(*argv, "-h") == 0) {
        argv++, argc--;
        host = *argv++;
        argc--;
    }
    if (argc != 1) {
        fprintf(stderr, "usage: whois [ -h host ] name\n");
        exit(1);
    }
    sin.sin_addr.s_addr = inet_addr(host);
    if (sin.sin_addr.s_addr != -1 && sin.sin_addr.s_addr != 0) {
        addrtype = AF_INET;
    } else {
        hp = gethostbyname(host);
        if (hp == NULL) {
            fprintf(stderr, "whois: %s: host unknown\n", host);
            exit(1);
        }
        addrtype = hp->h_addrtype;
        host = hp->h_name;
        bcopy(hp->h_addr, &sin.sin_addr, hp->h_length);
    }

    s = socket(addrtype, SOCK_STREAM, 0);
    if (s < 0) {
        perror("whois: socket");
        exit(2);
    }
    sin.sin_family = addrtype;
    sp = getservbyname("whois", "tcp");
    if (sp == NULL) {
        sin.sin_port = htons(IPPORT_WHOIS);
    }
    else sin.sin_port = sp->s_port;
    if (connect(s, (struct sockaddr *) &sin, sizeof (sin)) < 0) {
        perror("whois: connect");
        exit(5);
    }
    sfi = fdopen(s, "r");
    sfo = fdopen(s, "w");
    if (sfi == NULL || sfo == NULL) {
        perror("fdopen");
        close(s);
        exit(1);
    }
    fprintf(sfo, "%s\r\n", *argv);
    fflush(sfo);
    while ((c = getc(sfi)) != EOF)
        putchar(c);
    exit(0);
    /* NOTREACHED */
}