1 /* $NetBSD: stdethers.c,v 1.1.1.1 1996/08/09 10:14:57 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 <netinet/in.h> 39 #include <netinet/if_ether.h> 40 #include <ctype.h> 41 #include <err.h> 42 #include <limits.h> 43 #include <stdio.h> 44 #include <string.h> 45 46 #include "protos.h" 47 48 void usage __P((void)); 49 50 extern char *__progname; /* from crt0.o */ 51 52 #ifndef NTOA_FIX 53 #define NTOA(x) ether_ntoa(x) 54 #else 55 char *working_ntoa __P((struct ether_addr *)); 56 57 #define NTOA(x) working_ntoa(x) 58 59 /* 60 * As of 1995-12-02 NetBSD has an SunOS 4 incompatible ether_ntoa. 61 * The code in usr/lib/libc/net/ethers seems to do the correct thing 62 * when asking YP but not when returning string from ether_ntoa. 63 */ 64 65 char * 66 working_ntoa(e) 67 struct ether_addr *e; 68 { 69 static char a[] = "xx:xx:xx:xx:xx:xx"; 70 71 sprintf(a, "%x:%x:%x:%x:%x:%x", 72 e->ether_addr_octet[0], e->ether_addr_octet[1], 73 e->ether_addr_octet[2], e->ether_addr_octet[3], 74 e->ether_addr_octet[4], e->ether_addr_octet[5]); 75 return a; 76 } 77 #endif 78 79 int 80 main(argc, argv) 81 int argc; 82 char **argv; 83 { 84 FILE *data_file; 85 char data_line[_POSIX2_LINE_MAX]; 86 int line_no = 0, len; 87 char *fname; 88 struct ether_addr eth_addr; 89 char hostname[MAXHOSTNAMELEN]; 90 91 if (argc > 2) 92 usage(); 93 94 if (argc == 2) { 95 fname = argv[1]; 96 data_file = fopen(fname, "r"); 97 if (data_file == NULL) 98 err(1, "%s", fname); 99 } else { 100 fname = "<stdin>"; 101 data_file = stdin; 102 } 103 104 while (read_line(data_file, data_line, sizeof(data_line))) { 105 line_no++; 106 len = strlen(data_line); 107 108 if (len > 1) { 109 if (data_line[0] == '#') { 110 continue; 111 } 112 } else 113 continue; 114 115 /* 116 * Check if we have the whole line 117 */ 118 if (data_line[len - 1] != '\n') { 119 warnx("%s line %d: line to long, skipping", 120 fname, line_no); 121 continue; 122 } else 123 data_line[len - 1] = '\0'; 124 125 if (ether_line(data_line, ð_addr, hostname) == 0) 126 printf("%s\t%s\n", NTOA(ð_addr), hostname); 127 else 128 warnx("ignoring line %d: `%s'", line_no, data_line); 129 } 130 131 exit(0); 132 } 133 134 void 135 usage() 136 { 137 138 fprintf(stderr, "usage: %s [file]\n", __progname); 139 exit(1); 140 } 141