usr.sbin/ypserv/stdethers/stdethers.c

   1 /*      $NetBSD: stdethers.c,v 1.17 2009/04/19 06:06:40 lukem Exp $     */
   2
   3 /*
   4  * Copyright (c) 1995 Mats O Jansson <moj@stacken.kth.se>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  17  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #ifndef lint
  31 __RCSID("$NetBSD: stdethers.c,v 1.17 2009/04/19 06:06:40 lukem Exp $");
  32 #endif
  33
  34 #include <sys/types.h>
  35 #include <sys/param.h>
  36 #include <sys/socket.h>
  37 #include <net/if.h>
  38 #include <net/if_ether.h>
  39 #include <netinet/in.h>
  40 #include <err.h>
  41 #include <limits.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "protos.h"
  47
  48 int     main(int, char *[]);
  49 void    usage(void);
  50
  51
  52 int
  53 main(int argc, char *argv[])
  54 {
  55         struct ether_addr eth_addr;
  56         FILE    *data_file;
  57         size_t   line_no;
  58         size_t   len;
  59         const char *fname;
  60         char    *p;
  61         char     hostname[MAXHOSTNAMELEN + 1];
  62
  63         if (argc > 2)
  64                 usage();
  65
  66         if (argc == 2) {
  67                 fname = argv[1];
  68                 data_file = fopen(fname, "r");
  69                 if (data_file == NULL)
  70                         err(1, "%s", fname);
  71         } else {
  72                 fname = "<stdin>";
  73                 data_file = stdin;
  74         }
  75
  76         line_no = 0;
  77         for (;
  78             (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
  79             free(p)) {
  80                 if (len == 0)
  81                         continue;
  82
  83                 if (ether_line(p, &eth_addr, hostname) == 0)
  84                         printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
  85                 else
  86                         warnx("ignoring line %lu: `%s'",
  87                             (unsigned long)line_no, p);
  88         }
  89
  90         return 0;
  91 }
  92
  93 void
  94 usage(void)
  95 {
  96
  97         fprintf(stderr, "usage: %s [file]\n", getprogname());
  98         exit(1);
  99 }