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