1 /* 2 * Copyright 2004 The Aerospace Corporation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions, and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of The Aerospace Corporation may not be used to endorse or 14 * promote products derived from this software. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AEROSPACE CORPORATION "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AEROSPACE CORPORATION BE LIABLE 20 * FOR ANY 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 * Copyright (c) 1995 29 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 3. All advertising materials mentioning features or use of this software 40 * must display the following acknowledgement: 41 * This product includes software developed by Bill Paul. 42 * 4. Neither the name of the author nor the names of any co-contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 * EUI-64 conversion and lookup routines 59 * 60 * 61 * Converted from ether_addr.c rev 62 * FreeBSD: src/lib/libc/net/eui64.c,v 1.15 2002/04/08 07:51:10 ru Exp 63 * by Brooks Davis 64 * 65 * Written by Bill Paul <wpaul@ctr.columbia.edu> 66 * Center for Telecommunications Research 67 * Columbia University, New York City 68 */ 69 70 #ifndef __HAIKU__ 71 #include <sys/cdefs.h> 72 __FBSDID("$FreeBSD: src/lib/libc/net/eui64.c,v 1.2 2004/06/01 19:30:13 brooks Exp $"); 73 #endif 74 75 #include <stdio.h> 76 #ifndef __HAIKU__ 77 #include <paths.h> 78 #endif 79 #include <sys/types.h> 80 #ifdef __HAIKU__ 81 #include "eui64.h" 82 #else 83 #include <sys/eui64.h> 84 #endif 85 #include <string.h> 86 #include <stdlib.h> 87 #include <sys/param.h> 88 #ifndef __HAIKU__ 89 #ifdef YP 90 #include <rpc/rpc.h> 91 #include <rpcsvc/yp_prot.h> 92 #include <rpcsvc/ypclnt.h> 93 #endif 94 95 #ifndef _PATH_EUI64 96 #define _PATH_EUI64 "/etc/eui64" 97 #endif 98 99 static int eui64_line(const char *l, struct eui64 *e, char *hostname, 100 size_t len); 101 102 /* 103 * Parse a string of text containing an EUI-64 and hostname 104 * and separate it into its component parts. 105 */ 106 static int 107 eui64_line(const char *l, struct eui64 *e, char *hostname, size_t len) 108 { 109 char *line, *linehead, *cur; 110 111 linehead = strdup(l); 112 if (linehead == NULL) 113 return (-1); 114 line = linehead; 115 116 /* Find and parse the EUI64 */ 117 while ((cur = strsep(&line, " \t\r\n")) != NULL) { 118 if (*cur != '\0') { 119 if (eui64_aton(cur, e) == 0) 120 break; 121 else 122 goto bad; 123 } 124 } 125 126 /* Find the hostname */ 127 while ((cur = strsep(&line, " \t\r\n")) != NULL) { 128 if (*cur != '\0') { 129 if (strlcpy(hostname, cur, len) <= len) 130 break; 131 else 132 goto bad; 133 } 134 } 135 136 /* Make sure what remains is either whitespace or a comment */ 137 while ((cur = strsep(&line, " \t\r\n")) != NULL) { 138 if (*cur == '#') 139 break; 140 if (*cur != '\0') 141 goto bad; 142 } 143 144 return (0); 145 146 bad: 147 free(linehead); 148 return (-1); 149 } 150 #endif 151 152 /* 153 * Convert an ASCII representation of an EUI-64 to binary form. 154 */ 155 int 156 eui64_aton(const char *a, struct eui64 *e) 157 { 158 int i; 159 unsigned int o0, o1, o2, o3, o4, o5, o6, o7; 160 161 /* canonical form */ 162 i = sscanf(a, "%x-%x-%x-%x-%x-%x-%x-%x", 163 &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7); 164 if (i == EUI64_LEN) 165 goto good; 166 /* ethernet form */ 167 i = sscanf(a, "%x:%x:%x:%x:%x:%x:%x:%x", 168 &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7); 169 if (i == EUI64_LEN) 170 goto good; 171 /* classic fwcontrol/dconschat form */ 172 i = sscanf(a, "0x%2x%2x%2x%2x%2x%2x%2x%2x", 173 &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7); 174 if (i == EUI64_LEN) 175 goto good; 176 /* MAC format (-) */ 177 i = sscanf(a, "%x-%x-%x-%x-%x-%x", 178 &o0, &o1, &o2, &o5, &o6, &o7); 179 if (i == 6) { 180 o3 = 0xff; 181 o4 = 0xfe; 182 goto good; 183 } 184 /* MAC format (:) */ 185 i = sscanf(a, "%x:%x:%x:%x:%x:%x", 186 &o0, &o1, &o2, &o5, &o6, &o7); 187 if (i == 6) { 188 o3 = 0xff; 189 o4 = 0xfe; 190 goto good; 191 } 192 193 return (-1); 194 195 good: 196 e->octet[0]=o0; 197 e->octet[1]=o1; 198 e->octet[2]=o2; 199 e->octet[3]=o3; 200 e->octet[4]=o4; 201 e->octet[5]=o5; 202 e->octet[6]=o6; 203 e->octet[7]=o7; 204 205 return (0); 206 } 207 208 /* 209 * Convert a binary representation of an EUI-64 to an ASCII string. 210 */ 211 int 212 eui64_ntoa(const struct eui64 *id, char *a, size_t len) 213 { 214 int i; 215 216 i = snprintf(a, len, "%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x", 217 id->octet[0], id->octet[1], id->octet[2], id->octet[3], 218 id->octet[4], id->octet[5], id->octet[6], id->octet[7]); 219 if (i < 23 || i >= len) 220 return (-1); 221 return (0); 222 } 223 224 #ifndef __HAIKU__ 225 /* 226 * Map an EUI-64 to a hostname. Use either /etc/eui64 or NIS/YP. 227 */ 228 int 229 eui64_ntohost(char *hostname, size_t len, const struct eui64 *id) 230 { 231 FILE *fp; 232 char buf[BUFSIZ + 2]; 233 struct eui64 local_eui64; 234 char local_host[MAXHOSTNAMELEN]; 235 #ifdef YP 236 char *result; 237 int resultlen; 238 char eui64_a[24]; 239 char *yp_domain; 240 #endif 241 if ((fp = fopen(_PATH_EUI64, "r")) == NULL) 242 return (1); 243 244 while (fgets(buf,BUFSIZ,fp)) { 245 if (buf[0] == '#') 246 continue; 247 #ifdef YP 248 if (buf[0] == '+') { 249 if (yp_get_default_domain(&yp_domain)) 250 continue; 251 eui64_ntoa(id, eui64_a, sizeof(eui64_a)); 252 if (yp_match(yp_domain, "eui64.byid", eui64_a, 253 strlen(eui64_a), &result, &resultlen)) { 254 continue; 255 } 256 strncpy(buf, result, resultlen); 257 buf[resultlen] = '\0'; 258 free(result); 259 } 260 #endif 261 if (eui64_line(buf, &local_eui64, local_host, 262 sizeof(local_host)) == 0) { 263 if (bcmp(&local_eui64.octet[0], 264 &id->octet[0], EUI64_LEN) == 0) { 265 /* We have a match */ 266 strcpy(hostname, local_host); 267 fclose(fp); 268 return(0); 269 } 270 } 271 } 272 fclose(fp); 273 return (1); 274 } 275 276 /* 277 * Map a hostname to an EUI-64 using /etc/eui64 or NIS/YP. 278 */ 279 int 280 eui64_hostton(const char *hostname, struct eui64 *id) 281 { 282 FILE *fp; 283 char buf[BUFSIZ + 2]; 284 struct eui64 local_eui64; 285 char local_host[MAXHOSTNAMELEN]; 286 #ifdef YP 287 char *result; 288 int resultlen; 289 char *yp_domain; 290 #endif 291 if ((fp = fopen(_PATH_EUI64, "r")) == NULL) 292 return (1); 293 294 while (fgets(buf,BUFSIZ,fp)) { 295 if (buf[0] == '#') 296 continue; 297 #ifdef YP 298 if (buf[0] == '+') { 299 if (yp_get_default_domain(&yp_domain)) 300 continue; 301 if (yp_match(yp_domain, "eui64.byname", hostname, 302 strlen(hostname), &result, &resultlen)) { 303 continue; 304 } 305 strncpy(buf, result, resultlen); 306 buf[resultlen] = '\0'; 307 free(result); 308 } 309 #endif 310 if (eui64_line(buf, &local_eui64, local_host, 311 sizeof(local_host)) == 0) { 312 if (strcmp(hostname, local_host) == 0) { 313 /* We have a match */ 314 bcopy(&local_eui64, id, sizeof(struct eui64)); 315 fclose(fp); 316 return(0); 317 } 318 } 319 } 320 fclose(fp); 321 return (1); 322 } 323 #endif 324