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stdethers.c revision 1.18 
      1 /*	$NetBSD: stdethers.c,v 1.18 2009/10/20 00:51:14 snj Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Mats O Jansson <moj (at) 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 1.18 2009/10/20 00:51:14 snj 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 }
    100