1 /* $NetBSD: stdethers.c,v 1.2 1997/03/15 18:38:02 is 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/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 #ifndef NTOA_FIX /* XXX the below is wrong with old ARP code */ 41 #include <net/if_ether.h> 42 #endif 43 #include <ctype.h> 44 #include <err.h> 45 #include <limits.h> 46 #include <stdio.h> 47 #include <string.h> 48 49 #include "protos.h" 50 51 void usage __P((void)); 52 53 extern char *__progname; /* from crt0.o */ 54 55 #ifndef NTOA_FIX 56 #define NTOA(x) ether_ntoa(x) 57 #else 58 char *working_ntoa __P((struct ether_addr *)); 59 60 #define NTOA(x) working_ntoa(x) 61 62 /* 63 * As of 1995-12-02 NetBSD has an SunOS 4 incompatible ether_ntoa. 64 * The code in usr/lib/libc/net/ethers seems to do the correct thing 65 * when asking YP but not when returning string from ether_ntoa. 66 */ 67 68 char * 69 working_ntoa(e) 70 struct ether_addr *e; 71 { 72 static char a[] = "xx:xx:xx:xx:xx:xx"; 73 74 sprintf(a, "%x:%x:%x:%x:%x:%x", 75 e->ether_addr_octet[0], e->ether_addr_octet[1], 76 e->ether_addr_octet[2], e->ether_addr_octet[3], 77 e->ether_addr_octet[4], e->ether_addr_octet[5]); 78 return a; 79 } 80 #endif 81 82 int 83 main(argc, argv) 84 int argc; 85 char **argv; 86 { 87 FILE *data_file; 88 char data_line[_POSIX2_LINE_MAX]; 89 int line_no = 0, len; 90 char *fname; 91 struct ether_addr eth_addr; 92 char hostname[MAXHOSTNAMELEN]; 93 94 if (argc > 2) 95 usage(); 96 97 if (argc == 2) { 98 fname = argv[1]; 99 data_file = fopen(fname, "r"); 100 if (data_file == NULL) 101 err(1, "%s", fname); 102 } else { 103 fname = "<stdin>"; 104 data_file = stdin; 105 } 106 107 while (read_line(data_file, data_line, sizeof(data_line))) { 108 line_no++; 109 len = strlen(data_line); 110 111 if (len > 1) { 112 if (data_line[0] == '#') { 113 continue; 114 } 115 } else 116 continue; 117 118 /* 119 * Check if we have the whole line 120 */ 121 if (data_line[len - 1] != '\n') { 122 warnx("%s line %d: line to long, skipping", 123 fname, line_no); 124 continue; 125 } else 126 data_line[len - 1] = '\0'; 127 128 if (ether_line(data_line, ð_addr, hostname) == 0) 129 printf("%s\t%s\n", NTOA(ð_addr), hostname); 130 else 131 warnx("ignoring line %d: `%s'", line_no, data_line); 132 } 133 134 exit(0); 135 } 136 137 void 138 usage() 139 { 140 141 fprintf(stderr, "usage: %s [file]\n", __progname); 142 exit(1); 143 } 144