1 /* $NetBSD: stdethers.c,v 1.15 2002/11/30 03:10:59 lukem 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 * 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 1.15 2002/11/30 03:10:59 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 52 #include "protos.h" 53 54 int main(int, char *[]); 55 void usage(void); 56 57 58 int 59 main(int argc, char *argv[]) 60 { 61 struct ether_addr eth_addr; 62 FILE *data_file; 63 size_t line_no; 64 size_t len; 65 char *fname, *p; 66 char hostname[MAXHOSTNAMELEN + 1]; 67 68 if (argc > 2) 69 usage(); 70 71 if (argc == 2) { 72 fname = argv[1]; 73 data_file = fopen(fname, "r"); 74 if (data_file == NULL) 75 err(1, "%s", fname); 76 } else { 77 fname = "<stdin>"; 78 data_file = stdin; 79 } 80 81 line_no = 0; 82 for (; 83 (p = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL)); 84 free(p)) { 85 if (len == 0) 86 continue; 87 88 if (ether_line(p, ð_addr, hostname) == 0) 89 printf("%s\t%s\n", ether_ntoa(ð_addr), hostname); 90 else 91 warnx("ignoring line %lu: `%s'", 92 (unsigned long)line_no, p); 93 } 94 95 exit(0); 96 } 97 98 void 99 usage(void) 100 { 101 102 fprintf(stderr, "usage: %s [file]\n", getprogname()); 103 exit(1); 104 } 105