<?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 <[email protected]>
* @author Sebastian Kroczek <[email protected]>
* @author Dmitry Lukashin <[email protected]>
* @author Laurent Bassin <[email protected]>
*
* @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)
{
$codePoints = self::listCodePoints($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;
}
}