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stdethers.c revision 1.8 
      1 /*	$NetBSD: stdethers.c,v 1.8 1997/11/02 14:25:25 lukem 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 1.8 1997/11/02 14:25:25 lukem 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 <ctype.h>
     46 #include <err.h>
     47 #include <limits.h>
     48 #include <stdio.h>
     49 #include <string.h>
     50 
     51 #include "protos.h"
     52 
     53 int	main __P((int, char *[]));
     54 void	usage __P((void));
     55 
     56 extern	char *__progname;		/* from crt0.o */
     57 
     58 
     59 int
     60 main(argc, argv)
     61 	int argc;
     62 	char *argv[];
     63 {
     64 	struct ether_addr eth_addr;
     65 	FILE	*data_file;
     66 	int	 line_no, len;
     67 	char	*fname, *p, *h;
     68 	char	 hostname[MAXHOSTNAMELEN + 1];
     69 
     70 	if (argc > 2)
     71 		usage();
     72 
     73 	if (argc == 2) {
     74 		fname = argv[1];
     75 		data_file = fopen(fname, "r");
     76 		if (data_file == NULL)
     77 			err(1, "%s", fname);
     78 	} else {
     79 		fname = "<stdin>";
     80 		data_file = stdin;
     81 	}
     82 
     83 	line_no = 0;
     84 	while ((p = read_line(data_file, &len, &line_no)) != NULL) {
     85 		if (len == 0 || *p == '#')
     86 			continue;
     87 
     88 		h = strchr(p, '#');
     89 		if (h != NULL)
     90 			*h = '\0';
     91 
     92 		if (ether_line(p, &eth_addr, hostname) == 0)
     93 			printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
     94 		else
     95 			warnx("ignoring line %d: `%s'", line_no, p);
     96 	}
     97 
     98 	exit(0);
     99 }
    100 
    101 void
    102 usage()
    103 {
    104 
    105 	fprintf(stderr, "usage: %s [file]\n", __progname);
    106 	exit(1);
    107 }
    108