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stdethers.c revision 1.16.20.1 
      1 /*	$NetBSD: stdethers.c,v 1.16.20.1 2009/05/13 19:20:45 jym 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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Mats O Jansson
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 #ifndef lint
     36 __RCSID("$NetBSD: stdethers.c,v 1.16.20.1 2009/05/13 19:20:45 jym Exp $");
     37 #endif
     38 
     39 #include <sys/types.h>
     40 #include <sys/param.h>
     41 #include <sys/socket.h>
     42 #include <net/if.h>
     43 #include <net/if_ether.h>
     44 #include <netinet/in.h>
     45 #include <err.h>
     46 #include <limits.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <string.h>
     50 
     51 #include "protos.h"
     52 
     53 int	main(int, char *[]);
     54 void	usage(void);
     55 
     56 
     57 int
     58 main(int argc, char *argv[])
     59 {
     60 	struct ether_addr eth_addr;
     61 	FILE	*data_file;
     62 	size_t	 line_no;
     63 	size_t	 len;
     64 	const char *fname;
     65 	char	*p;
     66 	char	 hostname[MAXHOSTNAMELEN + 1];
     67 
     68 	if (argc > 2)
     69 		usage();
     70 
     71 	if (argc == 2) {
     72 		fname = argv[1];
     73 		data_file = fopen(fname, "r");
     74 		if (data_file == NULL)
     75 			err(1, "%s", fname);
     76 	} else {
     77 		fname = "<stdin>";
     78 		data_file = stdin;
     79 	}
     80 
     81 	line_no = 0;
     82 	for (;
     83 	    (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
     84 	    free(p)) {
     85 		if (len == 0)
     86 			continue;
     87 
     88 		if (ether_line(p, &eth_addr, hostname) == 0)
     89 			printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
     90 		else
     91 			warnx("ignoring line %lu: `%s'",
     92 			    (unsigned long)line_no, p);
     93 	}
     94 
     95 	return 0;
     96 }
     97 
     98 void
     99 usage(void)
    100 {
    101 
    102 	fprintf(stderr, "usage: %s [file]\n", getprogname());
    103 	exit(1);
    104 }
    105