Home | History | Annotate | Line # | Download | only in stdethers
stdethers.c revision 1.6 
      1 /*	$NetBSD: stdethers.c,v 1.6 1997/10/13 07:41:49 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 1.6 1997/10/13 07:41:49 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 <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 	FILE *data_file;
     65 	char data_line[_POSIX2_LINE_MAX];
     66 	int line_no = 0, len;
     67 	char *fname;
     68 	struct ether_addr eth_addr;
     69 	char hostname[MAXHOSTNAMELEN];
     70 
     71 	if (argc > 2)
     72 		usage();
     73 
     74 	if (argc == 2) {
     75 		fname = argv[1];
     76 		data_file = fopen(fname, "r");
     77 		if (data_file == NULL)
     78 			err(1, "%s", fname);
     79 	} else {
     80 		fname = "<stdin>";
     81 		data_file = stdin;
     82 	}
     83 
     84 	while (read_line(data_file, data_line, sizeof(data_line))) {
     85 		line_no++;
     86 		len = strlen(data_line);
     87 
     88 		if (len <= 1 || data_line[0] == '#')
     89 			continue;
     90 
     91 		/*
     92 		 * Check if we have the whole line
     93 		 */
     94 		if (data_line[len - 1] != '\n') {
     95 			warnx("%s line %d: line to long, skipping",
     96 			    fname, line_no);
     97 			continue;
     98 		} else
     99 			data_line[len - 1] = '\0';
    100 
    101 		if (ether_line(data_line, &eth_addr, hostname) == 0)
    102 			printf("%s\t%s\n", ether_ntoa(&eth_addr), hostname);
    103 		else
    104 			warnx("ignoring line %d: `%s'", line_no, data_line);
    105 	}
    106 
    107 	exit(0);
    108 }
    109 
    110 void
    111 usage()
    112 {
    113 
    114 	fprintf(stderr, "usage: %s [file]\n", __progname);
    115 	exit(1);
    116 }
    117