1 /* $NetBSD: stdethers.c,v 1.19 2011/08/30 21:10:29 joerg Exp $ */
2
3 /*
4 * Copyright (c) 1995 Mats O Jansson <moj@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 1.19 2011/08/30 21:10:29 joerg 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 __dead static void usage(void);
49
50
51 int
main(int argc,char * argv[])52 main(int argc, char *argv[])
53 {
54 struct ether_addr eth_addr;
55 FILE *data_file;
56 size_t line_no;
57 size_t len;
58 const char *fname;
59 char *p;
60 char hostname[MAXHOSTNAMELEN + 1];
61
62 if (argc > 2)
63 usage();
64
65 if (argc == 2) {
66 fname = argv[1];
67 data_file = fopen(fname, "r");
68 if (data_file == NULL)
69 err(1, "%s", fname);
70 } else {
71 fname = "<stdin>";
72 data_file = stdin;
73 }
74
75 line_no = 0;
76 for (;
77 (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
78 free(p)) {
79 if (len == 0)
80 continue;
81
82 if (ether_line(p, ð_addr, hostname) == 0)
83 printf("%s\t%s\n", ether_ntoa(ð_addr), hostname);
84 else
85 warnx("ignoring line %lu: `%s'",
86 (unsigned long)line_no, p);
87 }
88
89 return 0;
90 }
91
92 static void
usage(void)93 usage(void)
94 {
95
96 fprintf(stderr, "usage: %s [file]\n", getprogname());
97 exit(1);
98 }
99