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stdethers.c revision 1.10 
      1 /*	$NetBSD: stdethers.c,v 1.10 1998/06/08 06:53:49 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 1.10 1998/06/08 06:53:49 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 <stdlib.h>
     50 #include <string.h>
     51 #include <util.h>
     52 
     53 #include "protos.h"
     54 
     55 int	main __P((int, char *[]));
     56 void	usage __P((void));
     57 
     58 extern	char *__progname;		/* from crt0.o */
     59 
     60 
     61 int
     62 main(argc, argv)
     63 	int argc;
     64 	char *argv[];
     65 {
     66 	struct ether_addr eth_addr;
     67 	FILE	*data_file;
     68 	int	 line_no;
     69 	size_t	 len;
     70 	char	*fname, *p, *h;
     71 	char	 hostname[MAXHOSTNAMELEN + 1];
     72 
     73 	if (argc > 2)
     74 		usage();
     75 
     76 	if (argc == 2) {
     77 		fname = argv[1];
     78 		data_file = fopen(fname, "r");
     79 		if (data_file == NULL)
     80 			err(1, "%s", fname);
     81 	} else {
     82 		fname = "<stdin>";
     83 		data_file = stdin;
     84 	}
     85 
     86 	line_no = 0;
     87 	for (;
     88 	    (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
     89 	    free(p)) {
     90 		if (len == 0)
     91 			continue;
     92 
     93 		h = strchr(p, '#');
     94 		if (h != NULL)
     95 			*h = '\0';
     96 
     97 		if (ether_line(p, &eth_addr, hostname) == 0)
     98 			printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
     99 		else
    100 			warnx("ignoring line %d: `%s'", line_no, p);
    101 	}
    102 
    103 	exit(0);
    104 }
    105 
    106 void
    107 usage()
    108 {
    109 
    110 	fprintf(stderr, "usage: %s [file]\n", __progname);
    111 	exit(1);
    112 }
    113