1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/nsprpub/pr/src/misc/praton.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,198 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/*******************************************************************************
1.6 + * The following function pr_inet_aton is based on the BSD function inet_aton
1.7 + * with some modifications. The license and copyright notices applying to this
1.8 + * function appear below. Modifications are also according to the license below.
1.9 + ******************************************************************************/
1.10 +
1.11 +#include "prnetdb.h"
1.12 +
1.13 +/*
1.14 + * Copyright (c) 1983, 1990, 1993
1.15 + * The Regents of the University of California. All rights reserved.
1.16 + *
1.17 + * Redistribution and use in source and binary forms, with or without
1.18 + * modification, are permitted provided that the following conditions
1.19 + * are met:
1.20 + * 1. Redistributions of source code must retain the above copyright
1.21 + * notice, this list of conditions and the following disclaimer.
1.22 + * 2. Redistributions in binary form must reproduce the above copyright
1.23 + * notice, this list of conditions and the following disclaimer in the
1.24 + * documentation and/or other materials provided with the distribution.
1.25 + * 4. Neither the name of the University nor the names of its contributors
1.26 + * may be used to endorse or promote products derived from this software
1.27 + * without specific prior written permission.
1.28 + *
1.29 + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1.30 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.31 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.32 + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1.33 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.34 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.35 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.36 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.37 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.38 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.39 + * SUCH DAMAGE.
1.40 + */
1.41 +
1.42 +/*
1.43 + * Portions Copyright (c) 1993 by Digital Equipment Corporation.
1.44 + *
1.45 + * Permission to use, copy, modify, and distribute this software for any
1.46 + * purpose with or without fee is hereby granted, provided that the above
1.47 + * copyright notice and this permission notice appear in all copies, and that
1.48 + * the name of Digital Equipment Corporation not be used in advertising or
1.49 + * publicity pertaining to distribution of the document or software without
1.50 + * specific, written prior permission.
1.51 + *
1.52 + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
1.53 + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
1.54 + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
1.55 + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
1.56 + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
1.57 + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
1.58 + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
1.59 + * SOFTWARE.
1.60 + */
1.61 +
1.62 +/*
1.63 + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
1.64 + * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
1.65 + *
1.66 + * Permission to use, copy, modify, and distribute this software for any
1.67 + * purpose with or without fee is hereby granted, provided that the above
1.68 + * copyright notice and this permission notice appear in all copies.
1.69 + *
1.70 + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
1.71 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.72 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
1.73 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1.74 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1.75 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
1.76 + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.77 + */
1.78 +
1.79 +#define XX 127
1.80 +static const unsigned char index_hex[256] = {
1.81 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.82 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.83 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.84 + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,XX,XX, XX,XX,XX,XX,
1.85 + XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.86 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.87 + XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.88 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.89 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.90 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.91 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.92 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.93 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.94 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.95 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.96 + XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
1.97 +};
1.98 +
1.99 +static PRBool _isdigit(char c) { return c >= '0' && c <= '9'; }
1.100 +static PRBool _isxdigit(char c) { return index_hex[(unsigned char) c] != XX; }
1.101 +static PRBool _isspace(char c) { return c == ' ' || (c >= '\t' && c <= '\r'); }
1.102 +#undef XX
1.103 +
1.104 +int
1.105 +pr_inet_aton(const char *cp, PRUint32 *addr)
1.106 +{
1.107 + PRUint32 val;
1.108 + int base, n;
1.109 + char c;
1.110 + PRUint8 parts[4];
1.111 + PRUint8 *pp = parts;
1.112 + int digit;
1.113 +
1.114 + c = *cp;
1.115 + for (;;) {
1.116 + /*
1.117 + * Collect number up to ``.''.
1.118 + * Values are specified as for C:
1.119 + * 0x=hex, 0=octal, isdigit=decimal.
1.120 + */
1.121 + if (!_isdigit(c))
1.122 + return (0);
1.123 + val = 0; base = 10; digit = 0;
1.124 + if (c == '0') {
1.125 + c = *++cp;
1.126 + if (c == 'x' || c == 'X')
1.127 + base = 16, c = *++cp;
1.128 + else {
1.129 + base = 8;
1.130 + digit = 1;
1.131 + }
1.132 + }
1.133 + for (;;) {
1.134 + if (_isdigit(c)) {
1.135 + if (base == 8 && (c == '8' || c == '9'))
1.136 + return (0);
1.137 + val = (val * base) + (c - '0');
1.138 + c = *++cp;
1.139 + digit = 1;
1.140 + } else if (base == 16 && _isxdigit(c)) {
1.141 + val = (val << 4) + index_hex[(unsigned char) c];
1.142 + c = *++cp;
1.143 + digit = 1;
1.144 + } else
1.145 + break;
1.146 + }
1.147 + if (c == '.') {
1.148 + /*
1.149 + * Internet format:
1.150 + * a.b.c.d
1.151 + * a.b.c (with c treated as 16 bits)
1.152 + * a.b (with b treated as 24 bits)
1.153 + */
1.154 + if (pp >= parts + 3 || val > 0xffU)
1.155 + return (0);
1.156 + *pp++ = val;
1.157 + c = *++cp;
1.158 + } else
1.159 + break;
1.160 + }
1.161 + /*
1.162 + * Check for trailing characters.
1.163 + */
1.164 + if (c != '\0' && !_isspace(c))
1.165 + return (0);
1.166 + /*
1.167 + * Did we get a valid digit?
1.168 + */
1.169 + if (!digit)
1.170 + return (0);
1.171 + /*
1.172 + * Concoct the address according to
1.173 + * the number of parts specified.
1.174 + */
1.175 + n = pp - parts + 1;
1.176 + switch (n) {
1.177 + case 1: /*%< a -- 32 bits */
1.178 + break;
1.179 +
1.180 + case 2: /*%< a.b -- 8.24 bits */
1.181 + if (val > 0xffffffU)
1.182 + return (0);
1.183 + val |= parts[0] << 24;
1.184 + break;
1.185 +
1.186 + case 3: /*%< a.b.c -- 8.8.16 bits */
1.187 + if (val > 0xffffU)
1.188 + return (0);
1.189 + val |= (parts[0] << 24) | (parts[1] << 16);
1.190 + break;
1.191 +
1.192 + case 4: /*%< a.b.c.d -- 8.8.8.8 bits */
1.193 + if (val > 0xffU)
1.194 + return (0);
1.195 + val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
1.196 + break;
1.197 + }
1.198 + *addr = PR_htonl(val);
1.199 + return (1);
1.200 +}
1.201 +
