/*      $NetBSD: stdethers.c,v 1.19 2011/08/30 21:10:29 joerg Exp $     */

/*
* Copyright (c) 1995 Mats O Jansson <[email protected]>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: stdethers.c,v 1.19 2011/08/30 21:10:29 joerg Exp $");
#endif

#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <netinet/in.h>
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "protos.h"

__dead static void      usage(void);


int
main(int argc, char *argv[])
{
       struct ether_addr eth_addr;
       FILE    *data_file;
       size_t   line_no;
       size_t   len;
       const char *fname;
       char    *p;
       char     hostname[MAXHOSTNAMELEN + 1];

       if (argc > 2)
               usage();

       if (argc == 2) {
               fname = argv[1];
               data_file = fopen(fname, "r");
               if (data_file == NULL)
                       err(1, "%s", fname);
       } else {
               fname = "<stdin>";
               data_file = stdin;
       }

       line_no = 0;
       for (;
           (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
           free(p)) {
               if (len == 0)
                       continue;

               if (ether_line(p, &eth_addr, hostname) == 0)
                       printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
               else
                       warnx("ignoring line %lu: `%s'",
                           (unsigned long)line_no, p);
       }

       return 0;
}

static void
usage(void)
{

       fprintf(stderr, "usage: %s [file]\n", getprogname());
       exit(1);
}