11305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* $OpenBSD: inet_addr.c,v 1.9 2005/08/06 20:30:03 espie Exp $ */ 21305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 31305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* 41305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Copyright (c) 1983, 1990, 1993 51305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * The Regents of the University of California. All rights reserved. 61305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 71305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Redistribution and use in source and binary forms, with or without 81305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * modification, are permitted provided that the following conditions 91305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * are met: 101305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 1. Redistributions of source code must retain the above copyright 111305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * notice, this list of conditions and the following disclaimer. 121305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 2. Redistributions in binary form must reproduce the above copyright 131305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * notice, this list of conditions and the following disclaimer in the 141305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * documentation and/or other materials provided with the distribution. 151305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 3. Neither the name of the University nor the names of its contributors 161305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * may be used to endorse or promote products derived from this software 171305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * without specific prior written permission. 181305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 191305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 201305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 211305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 221305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 231305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 241305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 251305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 261305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 271305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 281305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 291305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * SUCH DAMAGE. 301305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * - 311305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Portions Copyright (c) 1993 by Digital Equipment Corporation. 321305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 331305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Permission to use, copy, modify, and distribute this software for any 341305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * purpose with or without fee is hereby granted, provided that the above 351305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * copyright notice and this permission notice appear in all copies, and that 361305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * the name of Digital Equipment Corporation not be used in advertising or 371305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * publicity pertaining to distribution of the document or software without 381305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * specific, written prior permission. 391305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 401305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 411305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 421305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 431305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 441305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 451305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 461305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 471305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * SOFTWARE. 481305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * - 491305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * --Copyright-- 501305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 511305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 521305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* OPENBSD ORIGINAL: lib/libc/net/inet_addr.c */ 531305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 541305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include "includes.h" 551305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 561305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#if !defined(HAVE_INET_ATON) 571305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 581305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <sys/types.h> 591305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <sys/param.h> 601305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <netinet/in.h> 611305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <arpa/inet.h> 621305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <ctype.h> 631305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 641305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#if 0 651305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* 661305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Ascii internet address interpretation routine. 671305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * The value returned is in network order. 681305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 691305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodin_addr_t 701305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodinet_addr(const char *cp) 711305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood{ 721305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood struct in_addr val; 731305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 741305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (inet_aton(cp, &val)) 751305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (val.s_addr); 761305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (INADDR_NONE); 771305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood} 781305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#endif 791305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 801305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* 811305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Check whether "cp" is a valid ascii representation 821305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * of an Internet address and convert to a binary address. 831305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Returns 1 if the address is valid, 0 if not. 841305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * This replaces inet_addr, the return value from which 851305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * cannot distinguish between failure and a local broadcast address. 861305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 871305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodint 881305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodinet_aton(const char *cp, struct in_addr *addr) 891305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood{ 901305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood u_int32_t val; 911305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood int base, n; 921305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood char c; 931305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood u_int parts[4]; 941305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood u_int *pp = parts; 951305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 961305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood c = *cp; 971305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood for (;;) { 981305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood /* 991305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Collect number up to ``.''. 1001305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Values are specified as for C: 1011305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 0x=hex, 0=octal, isdigit=decimal. 1021305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 1031305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (!isdigit(c)) 1041305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1051305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val = 0; base = 10; 1061305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (c == '0') { 1071305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood c = *++cp; 1081305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (c == 'x' || c == 'X') 1091305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood base = 16, c = *++cp; 1101305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood else 1111305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood base = 8; 1121305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } 1131305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood for (;;) { 1141305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (isascii(c) && isdigit(c)) { 1151305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val = (val * base) + (c - '0'); 1161305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood c = *++cp; 1171305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } else if (base == 16 && isascii(c) && isxdigit(c)) { 1181305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val = (val << 4) | 1191305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood (c + 10 - (islower(c) ? 'a' : 'A')); 1201305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood c = *++cp; 1211305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } else 1221305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1231305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } 1241305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (c == '.') { 1251305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood /* 1261305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Internet format: 1271305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * a.b.c.d 1281305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * a.b.c (with c treated as 16 bits) 1291305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * a.b (with b treated as 24 bits) 1301305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 1311305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (pp >= parts + 3) 1321305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1331305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood *pp++ = val; 1341305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood c = *++cp; 1351305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } else 1361305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1371305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } 1381305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood /* 1391305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Check for trailing characters. 1401305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 1411305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (c != '\0' && (!isascii(c) || !isspace(c))) 1421305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1431305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood /* 1441305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Concoct the address according to 1451305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * the number of parts specified. 1461305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 1471305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood n = pp - parts + 1; 1481305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood switch (n) { 1491305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1501305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood case 0: 1511305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); /* initial nondigit */ 1521305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1531305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood case 1: /* a -- 32 bits */ 1541305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1551305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1561305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood case 2: /* a.b -- 8.24 bits */ 1571305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if ((val > 0xffffff) || (parts[0] > 0xff)) 1581305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1591305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val |= parts[0] << 24; 1601305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1611305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1621305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood case 3: /* a.b.c -- 8.8.16 bits */ 1631305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if ((val > 0xffff) || (parts[0] > 0xff) || (parts[1] > 0xff)) 1641305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1651305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val |= (parts[0] << 24) | (parts[1] << 16); 1661305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1671305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1681305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood case 4: /* a.b.c.d -- 8.8.8.8 bits */ 1691305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if ((val > 0xff) || (parts[0] > 0xff) || (parts[1] > 0xff) || (parts[2] > 0xff)) 1701305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (0); 1711305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); 1721305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood break; 1731305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood } 1741305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood if (addr) 1751305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood addr->s_addr = htonl(val); 1761305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood return (1); 1771305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood} 1781305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 1791305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#endif /* !defined(HAVE_INET_ATON) */ 180