1 /* $NetBSD: stdethers.c,v 1.3 1997/07/18 21:57:08 thorpej 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 int main __P((int, char *[])); 52 void usage __P((void)); 53 54 extern char *__progname; /* from crt0.o */ 55 56 #ifndef NTOA_FIX 57 #define NTOA(x) ether_ntoa(x) 58 #else 59 char *working_ntoa __P((struct ether_addr *)); 60 61 #define NTOA(x) working_ntoa(x) 62 63 /* 64 * As of 1995-12-02 NetBSD has an SunOS 4 incompatible ether_ntoa. 65 * The code in usr/lib/libc/net/ethers seems to do the correct thing 66 * when asking YP but not when returning string from ether_ntoa. 67 */ 68 69 char * 70 working_ntoa(e) 71 struct ether_addr *e; 72 { 73 static char a[] = "xx:xx:xx:xx:xx:xx"; 74 75 sprintf(a, "%x:%x:%x:%x:%x:%x", 76 e->ether_addr_octet[0], e->ether_addr_octet[1], 77 e->ether_addr_octet[2], e->ether_addr_octet[3], 78 e->ether_addr_octet[4], e->ether_addr_octet[5]); 79 return a; 80 } 81 #endif 82 83 int 84 main(argc, argv) 85 int argc; 86 char *argv[]; 87 { 88 FILE *data_file; 89 char data_line[_POSIX2_LINE_MAX]; 90 int line_no = 0, len; 91 char *fname; 92 struct ether_addr eth_addr; 93 char hostname[MAXHOSTNAMELEN]; 94 95 if (argc > 2) 96 usage(); 97 98 if (argc == 2) { 99 fname = argv[1]; 100 data_file = fopen(fname, "r"); 101 if (data_file == NULL) 102 err(1, "%s", fname); 103 } else { 104 fname = "<stdin>"; 105 data_file = stdin; 106 } 107 108 while (read_line(data_file, data_line, sizeof(data_line))) { 109 line_no++; 110 len = strlen(data_line); 111 112 if (len > 1) { 113 if (data_line[0] == '#') { 114 continue; 115 } 116 } else 117 continue; 118 119 /* 120 * Check if we have the whole line 121 */ 122 if (data_line[len - 1] != '\n') { 123 warnx("%s line %d: line to long, skipping", 124 fname, line_no); 125 continue; 126 } else 127 data_line[len - 1] = '\0'; 128 129 if (ether_line(data_line, ð_addr, hostname) == 0) 130 printf("%s\t%s\n", NTOA(ð_addr), hostname); 131 else 132 warnx("ignoring line %d: `%s'", line_no, data_line); 133 } 134 135 exit(0); 136 } 137 138 void 139 usage() 140 { 141 142 fprintf(stderr, "usage: %s [file]\n", __progname); 143 exit(1); 144 } 145