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 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 93 usage(void) 94 { 95 96 fprintf(stderr, "usage: %s [file]\n", getprogname()); 97 exit(1); 98 } 99