lookup.c   [plain text]


/*
 * Copyright (c) 2000, Boris Popov
 * 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 Boris Popov.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $Id: lookup.c,v 1.1.1.1.786.1 2005/08/12 23:13:02 lindak Exp $
 */
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <err.h>
#include <stdio.h>
#include <unistd.h>
#include <strings.h>
#include <stdlib.h>
#include <sysexits.h>

#include <netinet/in.h>
#include <arpa/inet.h>

#include <cflib.h>

#include <netsmb/netbios.h>
#include <netsmb/smb_lib.h>
#include <netsmb/nb_lib.h>
#include <netsmb/smb_conn.h>

#include "common.h"


int
cmd_lookup(int argc, char *argv[])
{
	struct nb_ctx *ctx;
	struct sockaddr *sap;
	char *hostname;
	int error, opt;

	if (argc < 2)
		lookup_usage();
	error = nb_ctx_create(&ctx);
	if (error) {
		smb_error("unable to create nbcontext", error);
		exit(1);
	}
	if (smb_open_rcfile() == 0) {
		if (nb_ctx_readrcsection(smb_rc, ctx, "default", 0) != 0)
			exit(1);
		rc_close(smb_rc);
	}
	while ((opt = getopt(argc, argv, "w:")) != EOF) {
		switch(opt){
		    case 'w':
			nb_ctx_setns(ctx, optarg);
			break;
		    default:
			lookup_usage();
			/*NOTREACHED*/
		}
	}
	if (optind >= argc)
		lookup_usage();
	if (nb_ctx_resolve(ctx) != 0)
		exit(1);
	hostname = argv[argc - 1];
/*	printf("Looking for %s...\n", hostname);*/
	error = nbns_resolvename(hostname, ctx, 0, &sap);
	if (error) {
		smb_error("unable to resolve %s", error, hostname);
		exit(1);
	}
	printf("Got response from %s\n", inet_ntoa(ctx->nb_lastns.sin_addr));
	printf("IP address of %s: %s\n", hostname, inet_ntoa(((struct sockaddr_in*)sap)->sin_addr));
	return 0;
}


void
lookup_usage(void)
{
	printf("usage: smbutil lookup [-w host] name\n");
	exit(1);
}