| /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /******************************************************************************* |
| * The following function pr_inet_aton is based on the BSD function inet_aton |
| * with some modifications. The license and copyright notices applying to this |
| * function appear below. Modifications are also according to the license below. |
| ******************************************************************************/ |
| |
| #include "prnetdb.h" |
| |
| /* |
| * Copyright (c) 1983, 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| /* |
| * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies, and that |
| * the name of Digital Equipment Corporation not be used in advertising or |
| * publicity pertaining to distribution of the document or software without |
| * specific, written prior permission. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
| * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
| * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| * SOFTWARE. |
| */ |
| |
| /* |
| * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
| * Portions Copyright (c) 1996-1999 by Internet Software Consortium. |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #define XX 127 |
| static const unsigned char index_hex[256] = { |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,XX,XX, XX,XX,XX,XX, |
| XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, |
| }; |
| |
| static PRBool _isdigit(char c) { return c >= '0' && c <= '9'; } |
| static PRBool _isxdigit(char c) { return index_hex[(unsigned char) c] != XX; } |
| static PRBool _isspace(char c) { return c == ' ' || (c >= '\t' && c <= '\r'); } |
| #undef XX |
| |
| int |
| pr_inet_aton(const char *cp, PRUint32 *addr) |
| { |
| PRUint32 val; |
| int base, n; |
| char c; |
| PRUint8 parts[4]; |
| PRUint8 *pp = parts; |
| int digit; |
| |
| c = *cp; |
| for (;;) { |
| /* |
| * Collect number up to ``.''. |
| * Values are specified as for C: |
| * 0x=hex, 0=octal, isdigit=decimal. |
| */ |
| if (!_isdigit(c)) |
| return (0); |
| val = 0; base = 10; digit = 0; |
| if (c == '0') { |
| c = *++cp; |
| if (c == 'x' || c == 'X') |
| base = 16, c = *++cp; |
| else { |
| base = 8; |
| digit = 1; |
| } |
| } |
| for (;;) { |
| if (_isdigit(c)) { |
| if (base == 8 && (c == '8' || c == '9')) |
| return (0); |
| val = (val * base) + (c - '0'); |
| c = *++cp; |
| digit = 1; |
| } else if (base == 16 && _isxdigit(c)) { |
| val = (val << 4) + index_hex[(unsigned char) c]; |
| c = *++cp; |
| digit = 1; |
| } else |
| break; |
| } |
| if (c == '.') { |
| /* |
| * Internet format: |
| * a.b.c.d |
| * a.b.c (with c treated as 16 bits) |
| * a.b (with b treated as 24 bits) |
| */ |
| if (pp >= parts + 3 || val > 0xffU) |
| return (0); |
| *pp++ = val; |
| c = *++cp; |
| } else |
| break; |
| } |
| /* |
| * Check for trailing characters. |
| */ |
| if (c != '\0' && !_isspace(c)) |
| return (0); |
| /* |
| * Did we get a valid digit? |
| */ |
| if (!digit) |
| return (0); |
| /* |
| * Concoct the address according to |
| * the number of parts specified. |
| */ |
| n = pp - parts + 1; |
| switch (n) { |
| case 1: /*%< a -- 32 bits */ |
| break; |
| |
| case 2: /*%< a.b -- 8.24 bits */ |
| if (val > 0xffffffU) |
| return (0); |
| val |= parts[0] << 24; |
| break; |
| |
| case 3: /*%< a.b.c -- 8.8.16 bits */ |
| if (val > 0xffffU) |
| return (0); |
| val |= (parts[0] << 24) | (parts[1] << 16); |
| break; |
| |
| case 4: /*%< a.b.c.d -- 8.8.8.8 bits */ |
| if (val > 0xffU) |
| return (0); |
| val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); |
| break; |
| } |
| *addr = PR_htonl(val); |
| return (1); |
| } |
| |
