288 lines
8.5 KiB
PHP
288 lines
8.5 KiB
PHP
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<?php
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/*
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* Copyright (c) 2014 TrueServer B.V.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Originally forked from
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* https://github.com/true/php-punycode/blob/v2.1.1/src/Punycode.php
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*/
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namespace Symfony\Polyfill\Intl\Idn;
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/**
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* Partial intl implementation in pure PHP.
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*
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* Implemented:
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* - idn_to_ascii - Convert domain name to IDNA ASCII form
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* - idn_to_utf8 - Convert domain name from IDNA ASCII to Unicode
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*
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* @author Renan Gonçalves <renan.saddam@gmail.com>
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* @author Sebastian Kroczek <sk@xbug.de>
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* @author Dmitry Lukashin <dmitry@lukashin.ru>
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* @author Laurent Bassin <laurent@bassin.info>
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*
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* @internal
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*/
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final class Idn
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{
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const INTL_IDNA_VARIANT_2003 = 0;
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const INTL_IDNA_VARIANT_UTS46 = 1;
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private static $encodeTable = array(
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
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'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
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'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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);
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private static $decodeTable = array(
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'a' => 0, 'b' => 1, 'c' => 2, 'd' => 3, 'e' => 4, 'f' => 5,
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'g' => 6, 'h' => 7, 'i' => 8, 'j' => 9, 'k' => 10, 'l' => 11,
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'm' => 12, 'n' => 13, 'o' => 14, 'p' => 15, 'q' => 16, 'r' => 17,
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's' => 18, 't' => 19, 'u' => 20, 'v' => 21, 'w' => 22, 'x' => 23,
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'y' => 24, 'z' => 25, '0' => 26, '1' => 27, '2' => 28, '3' => 29,
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'4' => 30, '5' => 31, '6' => 32, '7' => 33, '8' => 34, '9' => 35,
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);
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public static function idn_to_ascii($domain, $options, $variant, &$idna_info = array())
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{
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if (\PHP_VERSION_ID >= 70200 && self::INTL_IDNA_VARIANT_2003 === $variant) {
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@trigger_error('idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated', E_USER_DEPRECATED);
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}
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if (self::INTL_IDNA_VARIANT_UTS46 === $variant) {
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$domain = mb_strtolower($domain, 'utf-8');
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}
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$parts = explode('.', $domain);
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foreach ($parts as $i => &$part) {
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if ('' === $part && \count($parts) > 1 + $i) {
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return false;
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}
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if (false === $part = self::encodePart($part)) {
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return false;
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}
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}
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$output = implode('.', $parts);
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$idna_info = array(
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'result' => \strlen($output) > 255 ? false : $output,
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'isTransitionalDifferent' => false,
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'errors' => 0,
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);
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return $idna_info['result'];
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}
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public static function idn_to_utf8($domain, $options, $variant, &$idna_info = array())
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{
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if (\PHP_VERSION_ID >= 70200 && self::INTL_IDNA_VARIANT_2003 === $variant) {
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@trigger_error('idn_to_utf8(): INTL_IDNA_VARIANT_2003 is deprecated', E_USER_DEPRECATED);
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}
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$parts = explode('.', $domain);
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foreach ($parts as &$part) {
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$length = \strlen($part);
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if ($length < 1 || 63 < $length) {
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continue;
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}
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if (0 !== strpos($part, 'xn--')) {
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continue;
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}
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$part = substr($part, 4);
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$part = self::decodePart($part);
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}
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$output = implode('.', $parts);
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$idna_info = array(
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'result' => \strlen($output) > 255 ? false : $output,
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'isTransitionalDifferent' => false,
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'errors' => 0,
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);
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return $idna_info['result'];
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}
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private static function encodePart($input)
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{
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if (\substr($input, 0, 1) === '-' || \substr($input, -1) === '-') {
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return false;
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}
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$codePoints = self::listCodePoints($input);
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$n = 128;
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$bias = 72;
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$delta = 0;
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$h = $b = \count($codePoints['basic']);
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$output = '';
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foreach ($codePoints['basic'] as $code) {
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$output .= mb_chr($code, 'utf-8');
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}
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if ($input === $output) {
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return $output;
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}
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if ($b > 0) {
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$output .= '-';
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}
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$codePoints['nonBasic'] = array_unique($codePoints['nonBasic']);
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sort($codePoints['nonBasic']);
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$i = 0;
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$length = mb_strlen($input, 'utf-8');
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while ($h < $length) {
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$m = $codePoints['nonBasic'][$i++];
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$delta += ($m - $n) * ($h + 1);
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$n = $m;
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foreach ($codePoints['all'] as $c) {
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if ($c < $n || $c < 128) {
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++$delta;
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}
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if ($c === $n) {
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$q = $delta;
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for ($k = 36;; $k += 36) {
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$t = self::calculateThreshold($k, $bias);
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if ($q < $t) {
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break;
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}
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$code = $t + (($q - $t) % (36 - $t));
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$output .= self::$encodeTable[$code];
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$q = ($q - $t) / (36 - $t);
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}
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$output .= self::$encodeTable[$q];
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$bias = self::adapt($delta, $h + 1, ($h === $b));
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$delta = 0;
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++$h;
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}
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}
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++$delta;
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++$n;
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}
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$output = 'xn--'.$output;
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return \strlen($output) < 1 || 63 < \strlen($output) ? false : strtolower($output);
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}
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private static function listCodePoints($input)
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{
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$codePoints = array(
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'all' => array(),
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'basic' => array(),
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'nonBasic' => array(),
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);
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$length = mb_strlen($input, 'utf-8');
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for ($i = 0; $i < $length; ++$i) {
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$char = mb_substr($input, $i, 1, 'utf-8');
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$code = mb_ord($char, 'utf-8');
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if ($code < 128) {
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$codePoints['all'][] = $codePoints['basic'][] = $code;
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} else {
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$codePoints['all'][] = $codePoints['nonBasic'][] = $code;
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}
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}
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return $codePoints;
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}
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private static function calculateThreshold($k, $bias)
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{
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if ($k <= $bias + 1) {
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return 1;
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}
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if ($k >= $bias + 26) {
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return 26;
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}
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return $k - $bias;
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}
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private static function adapt($delta, $numPoints, $firstTime)
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{
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$delta = (int) ($firstTime ? $delta / 700 : $delta / 2);
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$delta += (int) ($delta / $numPoints);
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$k = 0;
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while ($delta > 35 * 13) {
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$delta = (int) ($delta / 35);
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$k = $k + 36;
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}
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return $k + (int) (36 * $delta / ($delta + 38));
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}
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private static function decodePart($input)
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{
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$n = 128;
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$i = 0;
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$bias = 72;
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$output = '';
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$pos = strrpos($input, '-');
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if (false !== $pos) {
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$output = substr($input, 0, $pos++);
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} else {
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$pos = 0;
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}
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$outputLength = \strlen($output);
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$inputLength = \strlen($input);
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while ($pos < $inputLength) {
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$oldi = $i;
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$w = 1;
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for ($k = 36;; $k += 36) {
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$digit = self::$decodeTable[$input[$pos++]];
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$i += $digit * $w;
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$t = self::calculateThreshold($k, $bias);
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if ($digit < $t) {
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break;
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}
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$w *= 36 - $t;
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}
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$bias = self::adapt($i - $oldi, ++$outputLength, 0 === $oldi);
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$n = $n + (int) ($i / $outputLength);
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$i = $i % $outputLength;
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$output = mb_substr($output, 0, $i, 'utf-8').mb_chr($n, 'utf-8').mb_substr($output, $i, $outputLength - 1, 'utf-8');
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++$i;
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}
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return $output;
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}
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}
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