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Idn.php

Idn.php 16KB
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12 
  1. <?php
    2. 

  2.  namespace MailPoetVendor\Symfony\Polyfill\Intl\Idn; if (!defined('ABSPATH')) exit; use Exception; use MailPoetVendor\Normalizer; use MailPoetVendor\Symfony\Polyfill\Intl\Idn\Resources\unidata\DisallowedRanges; use MailPoetVendor\Symfony\Polyfill\Intl\Idn\Resources\unidata\Regex; final class Idn { const ERROR_EMPTY_LABEL = 1; const ERROR_LABEL_TOO_LONG = 2; const ERROR_DOMAIN_NAME_TOO_LONG = 4; const ERROR_LEADING_HYPHEN = 8; const ERROR_TRAILING_HYPHEN = 0x10; const ERROR_HYPHEN_3_4 = 0x20; const ERROR_LEADING_COMBINING_MARK = 0x40; const ERROR_DISALLOWED = 0x80; const ERROR_PUNYCODE = 0x100; const ERROR_LABEL_HAS_DOT = 0x200; const ERROR_INVALID_ACE_LABEL = 0x400; const ERROR_BIDI = 0x800; const ERROR_CONTEXTJ = 0x1000; const ERROR_CONTEXTO_PUNCTUATION = 0x2000; const ERROR_CONTEXTO_DIGITS = 0x4000; const INTL_IDNA_VARIANT_2003 = 0; const INTL_IDNA_VARIANT_UTS46 = 1; const MAX_DOMAIN_SIZE = 253; const MAX_LABEL_SIZE = 63; const BASE = 36; const TMIN = 1; const TMAX = 26; const SKEW = 38; const DAMP = 700; const INITIAL_BIAS = 72; const INITIAL_N = 128; const DELIMITER = '-'; const MAX_INT = 2147483647; private static $basicToDigit = array(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1); private static $virama; private static $mapped; private static $ignored; private static $deviation; private static $disallowed; private static $disallowed_STD3_mapped; private static $disallowed_STD3_valid; private static $mappingTableLoaded = \false; public static function idn_to_ascii($domainName, $options = \IDNA_DEFAULT, $variant = self::INTL_IDNA_VARIANT_UTS46, &$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); } $options = array('CheckHyphens' => \true, 'CheckBidi' => self::INTL_IDNA_VARIANT_2003 === $variant || 0 !== ($options & \IDNA_CHECK_BIDI), 'CheckJoiners' => self::INTL_IDNA_VARIANT_UTS46 === $variant && 0 !== ($options & \IDNA_CHECK_CONTEXTJ), 'UseSTD3ASCIIRules' => 0 !== ($options & \IDNA_USE_STD3_RULES), 'Transitional_Processing' => self::INTL_IDNA_VARIANT_2003 === $variant || 0 === ($options & \IDNA_NONTRANSITIONAL_TO_ASCII), 'VerifyDnsLength' => \true); $info = new Info(); $labels = self::process((string) $domainName, $options, $info); foreach ($labels as $i => $label) { if (1 === \preg_match('/[^\\x00-\\x7F]/', $label)) { try { $label = 'xn--' . self::punycodeEncode($label); } catch (Exception $e) { $info->errors |= self::ERROR_PUNYCODE; } $labels[$i] = $label; } } if ($options['VerifyDnsLength']) { self::validateDomainAndLabelLength($labels, $info); } $idna_info = array('result' => \implode('.', $labels), 'isTransitionalDifferent' => $info->transitionalDifferent, 'errors' => $info->errors); return 0 === $info->errors ? $idna_info['result'] : \false; } public static function idn_to_utf8($domainName, $options = \IDNA_DEFAULT, $variant = self::INTL_IDNA_VARIANT_UTS46, &$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); } $info = new Info(); $labels = self::process((string) $domainName, array('CheckHyphens' => \true, 'CheckBidi' => self::INTL_IDNA_VARIANT_2003 === $variant || 0 !== ($options & \IDNA_CHECK_BIDI), 'CheckJoiners' => self::INTL_IDNA_VARIANT_UTS46 === $variant && 0 !== ($options & \IDNA_CHECK_CONTEXTJ), 'UseSTD3ASCIIRules' => 0 !== ($options & \IDNA_USE_STD3_RULES), 'Transitional_Processing' => self::INTL_IDNA_VARIANT_2003 === $variant || 0 === ($options & \IDNA_NONTRANSITIONAL_TO_UNICODE)), $info); $idna_info = array('result' => \implode('.', $labels), 'isTransitionalDifferent' => $info->transitionalDifferent, 'errors' => $info->errors); return 0 === $info->errors ? $idna_info['result'] : \false; } private static function isValidContextJ(array $codePoints, $label) { if (!isset(self::$virama)) { self::$virama = (require __DIR__ . \DIRECTORY_SEPARATOR . 'Resources' . \DIRECTORY_SEPARATOR . 'unidata' . \DIRECTORY_SEPARATOR . 'virama.php'); } $offset = 0; foreach ($codePoints as $i => $codePoint) { if (0x200c !== $codePoint && 0x200d !== $codePoint) { continue; } if (!isset($codePoints[$i - 1])) { return \false; } if (isset(self::$virama[$codePoints[$i - 1]])) { continue; } if (0x200c === $codePoint && 1 === \preg_match(Regex::ZWNJ, $label, $matches, \PREG_OFFSET_CAPTURE, $offset)) { $offset += \strlen($matches[1][0]); continue; } return \false; } return \true; } private static function mapCodePoints($input, array $options, Info $info) { $str = ''; $useSTD3ASCIIRules = $options['UseSTD3ASCIIRules']; $transitional = $options['Transitional_Processing']; foreach (self::utf8Decode($input) as $codePoint) { $data = self::lookupCodePointStatus($codePoint, $useSTD3ASCIIRules); switch ($data['status']) { case 'disallowed': $info->errors |= self::ERROR_DISALLOWED; case 'valid': $str .= \mb_chr($codePoint, 'utf-8'); break; case 'ignored': break; case 'mapped': $str .= $data['mapping']; break; case 'deviation': $info->transitionalDifferent = \true; $str .= $transitional ? $data['mapping'] : \mb_chr($codePoint, 'utf-8'); break; } } return $str; } private static function process($domain, array $options, Info $info) { $checkForEmptyLabels = !isset($options['VerifyDnsLength']) || $options['VerifyDnsLength']; if ($checkForEmptyLabels && '' === $domain) { $info->errors |= self::ERROR_EMPTY_LABEL; return array($domain); } $domain = self::mapCodePoints($domain, $options, $info); if (!Normalizer::isNormalized($domain, Normalizer::FORM_C)) { $domain = Normalizer::normalize($domain, Normalizer::FORM_C); } $labels = \explode('.', $domain); $lastLabelIndex = \count($labels) - 1; foreach ($labels as $i => $label) { $validationOptions = $options; if ('xn--' === \substr($label, 0, 4)) { try { $label = self::punycodeDecode(\substr($label, 4)); } catch (Exception $e) { $info->errors |= self::ERROR_PUNYCODE; continue; } $validationOptions['Transitional_Processing'] = \false; $labels[$i] = $label; } self::validateLabel($label, $info, $validationOptions, $i > 0 && $i === $lastLabelIndex); } if ($info->bidiDomain && !$info->validBidiDomain) { $info->errors |= self::ERROR_BIDI; } return $labels; } private static function validateBidiLabel($label, Info $info) { if (1 === \preg_match(Regex::RTL_LABEL, $label)) { $info->bidiDomain = \true; if (1 !== \preg_match(Regex::BIDI_STEP_1_RTL, $label)) { $info->validBidiDomain = \false; return; } if (1 === \preg_match(Regex::BIDI_STEP_2, $label)) { $info->validBidiDomain = \false; return; } if (1 !== \preg_match(Regex::BIDI_STEP_3, $label)) { $info->validBidiDomain = \false; return; } if (1 === \preg_match(Regex::BIDI_STEP_4_AN, $label) && 1 === \preg_match(Regex::BIDI_STEP_4_EN, $label)) { $info->validBidiDomain = \false; return; } return; } if (1 !== \preg_match(Regex::BIDI_STEP_1_LTR, $label)) { $info->validBidiDomain = \false; return; } if (1 === \preg_match(Regex::BIDI_STEP_5, $label)) { $info->validBidiDomain = \false; return; } if (1 !== \preg_match(Regex::BIDI_STEP_6, $label)) { $info->validBidiDomain = \false; return; } } private static function validateDomainAndLabelLength(array $labels, Info $info) { $maxDomainSize = self::MAX_DOMAIN_SIZE; $length = \count($labels); $domainLength = $length - 1; if ($length > 1 && '' === $labels[$length - 1]) { ++$maxDomainSize; --$length; } for ($i = 0; $i < $length; ++$i) { $bytes = \strlen($labels[$i]); $domainLength += $bytes; if ($bytes > self::MAX_LABEL_SIZE) { $info->errors |= self::ERROR_LABEL_TOO_LONG; } } if ($domainLength > $maxDomainSize) { $info->errors |= self::ERROR_DOMAIN_NAME_TOO_LONG; } } private static function validateLabel($label, Info $info, array $options, $canBeEmpty) { if ('' === $label) { if (!$canBeEmpty && (!isset($options['VerifyDnsLength']) || $options['VerifyDnsLength'])) { $info->errors |= self::ERROR_EMPTY_LABEL; } return; } if (!Normalizer::isNormalized($label, Normalizer::FORM_C)) { $info->errors |= self::ERROR_INVALID_ACE_LABEL; } $codePoints = self::utf8Decode($label); if ($options['CheckHyphens']) { if (isset($codePoints[2], $codePoints[3]) && 0x2d === $codePoints[2] && 0x2d === $codePoints[3]) { $info->errors |= self::ERROR_HYPHEN_3_4; } if ('-' === \substr($label, 0, 1)) { $info->errors |= self::ERROR_LEADING_HYPHEN; } if ('-' === \substr($label, -1, 1)) { $info->errors |= self::ERROR_TRAILING_HYPHEN; } } if (\false !== \strpos($label, '.')) { $info->errors |= self::ERROR_LABEL_HAS_DOT; } if (1 === \preg_match(Regex::COMBINING_MARK, $label)) { $info->errors |= self::ERROR_LEADING_COMBINING_MARK; } $transitional = $options['Transitional_Processing']; $useSTD3ASCIIRules = $options['UseSTD3ASCIIRules']; foreach ($codePoints as $codePoint) { $data = self::lookupCodePointStatus($codePoint, $useSTD3ASCIIRules); $status = $data['status']; if ('valid' === $status || !$transitional && 'deviation' === $status) { continue; } $info->errors |= self::ERROR_DISALLOWED; break; } if ($options['CheckJoiners'] && !self::isValidContextJ($codePoints, $label)) { $info->errors |= self::ERROR_CONTEXTJ; } if ($options['CheckBidi'] && (!$info->bidiDomain || $info->validBidiDomain)) { self::validateBidiLabel($label, $info); } } private static function punycodeDecode($input) { $n = self::INITIAL_N; $out = 0; $i = 0; $bias = self::INITIAL_BIAS; $lastDelimIndex = \strrpos($input, self::DELIMITER); $b = \false === $lastDelimIndex ? 0 : $lastDelimIndex; $inputLength = \strlen($input); $output = array(); $bytes = \array_map('ord', \str_split($input)); for ($j = 0; $j < $b; ++$j) { if ($bytes[$j] > 0x7f) { throw new Exception('Invalid input'); } $output[$out++] = $input[$j]; } if ($b > 0) { ++$b; } for ($in = $b; $in < $inputLength; ++$out) { $oldi = $i; $w = 1; for ($k = self::BASE;; $k += self::BASE) { if ($in >= $inputLength) { throw new Exception('Invalid input'); } $digit = self::$basicToDigit[$bytes[$in++] & 0xff]; if ($digit < 0) { throw new Exception('Invalid input'); } if ($digit > \intdiv(self::MAX_INT - $i, $w)) { throw new Exception('Integer overflow'); } $i += $digit * $w; if ($k <= $bias) { $t = self::TMIN; } elseif ($k >= $bias + self::TMAX) { $t = self::TMAX; } else { $t = $k - $bias; } if ($digit < $t) { break; } $baseMinusT = self::BASE - $t; if ($w > \intdiv(self::MAX_INT, $baseMinusT)) { throw new Exception('Integer overflow'); } $w *= $baseMinusT; } $outPlusOne = $out + 1; $bias = self::adaptBias($i - $oldi, $outPlusOne, 0 === $oldi); if (\intdiv($i, $outPlusOne) > self::MAX_INT - $n) { throw new Exception('Integer overflow'); } $n += \intdiv($i, $outPlusOne); $i %= $outPlusOne; \array_splice($output, $i++, 0, array(\mb_chr($n, 'utf-8'))); } return \implode('', $output); } private static function punycodeEncode($input) { $n = self::INITIAL_N; $delta = 0; $out = 0; $bias = self::INITIAL_BIAS; $inputLength = 0; $output = ''; $iter = self::utf8Decode($input); foreach ($iter as $codePoint) { ++$inputLength; if ($codePoint < 0x80) { $output .= \chr($codePoint); ++$out; } } $h = $out; $b = $out; if ($b > 0) { $output .= self::DELIMITER; ++$out; } while ($h < $inputLength) { $m = self::MAX_INT; foreach ($iter as $codePoint) { if ($codePoint >= $n && $codePoint < $m) { $m = $codePoint; } } if ($m - $n > \intdiv(self::MAX_INT - $delta, $h + 1)) { throw new Exception('Integer overflow'); } $delta += ($m - $n) * ($h + 1); $n = $m; foreach ($iter as $codePoint) { if ($codePoint < $n && 0 === ++$delta) { throw new Exception('Integer overflow'); } elseif ($codePoint === $n) { $q = $delta; for ($k = self::BASE;; $k += self::BASE) { if ($k <= $bias) { $t = self::TMIN; } elseif ($k >= $bias + self::TMAX) { $t = self::TMAX; } else { $t = $k - $bias; } if ($q < $t) { break; } $qMinusT = $q - $t; $baseMinusT = self::BASE - $t; $output .= self::encodeDigit($t + $qMinusT % $baseMinusT, \false); ++$out; $q = \intdiv($qMinusT, $baseMinusT); } $output .= self::encodeDigit($q, \false); ++$out; $bias = self::adaptBias($delta, $h + 1, $h === $b); $delta = 0; ++$h; } } ++$delta; ++$n; } return $output; } private static function adaptBias($delta, $numPoints, $firstTime) { $delta = $firstTime ? \intdiv($delta, self::DAMP) : $delta >> 1; $delta += \intdiv($delta, $numPoints); $k = 0; while ($delta > (self::BASE - self::TMIN) * self::TMAX >> 1) { $delta = \intdiv($delta, self::BASE - self::TMIN); $k += self::BASE; } return $k + \intdiv((self::BASE - self::TMIN + 1) * $delta, $delta + self::SKEW); } private static function encodeDigit($d, $flag) { return \chr($d + 22 + 75 * ($d < 26 ? 1 : 0) - (($flag ? 1 : 0) << 5)); } private static function utf8Decode($input) { $bytesSeen = 0; $bytesNeeded = 0; $lowerBoundary = 0x80; $upperBoundary = 0xbf; $codePoint = 0; $codePoints = array(); $length = \strlen($input); for ($i = 0; $i < $length; ++$i) { $byte = \ord($input[$i]); if (0 === $bytesNeeded) { if ($byte >= 0x0 && $byte <= 0x7f) { $codePoints[] = $byte; continue; } if ($byte >= 0xc2 && $byte <= 0xdf) { $bytesNeeded = 1; $codePoint = $byte & 0x1f; } elseif ($byte >= 0xe0 && $byte <= 0xef) { if (0xe0 === $byte) { $lowerBoundary = 0xa0; } elseif (0xed === $byte) { $upperBoundary = 0x9f; } $bytesNeeded = 2; $codePoint = $byte & 0xf; } elseif ($byte >= 0xf0 && $byte <= 0xf4) { if (0xf0 === $byte) { $lowerBoundary = 0x90; } elseif (0xf4 === $byte) { $upperBoundary = 0x8f; } $bytesNeeded = 3; $codePoint = $byte & 0x7; } else { $codePoints[] = 0xfffd; } continue; } if ($byte < $lowerBoundary || $byte > $upperBoundary) { $codePoint = 0; $bytesNeeded = 0; $bytesSeen = 0; $lowerBoundary = 0x80; $upperBoundary = 0xbf; --$i; $codePoints[] = 0xfffd; continue; } $lowerBoundary = 0x80; $upperBoundary = 0xbf; $codePoint = $codePoint << 6 | $byte & 0x3f; if (++$bytesSeen !== $bytesNeeded) { continue; } $codePoints[] = $codePoint; $codePoint = 0; $bytesNeeded = 0; $bytesSeen = 0; } if (0 !== $bytesNeeded) { $codePoints[] = 0xfffd; } return $codePoints; } private static function lookupCodePointStatus($codePoint, $useSTD3ASCIIRules) { if (!self::$mappingTableLoaded) { self::$mappingTableLoaded = \true; self::$mapped = (require __DIR__ . '/Resources/unidata/mapped.php'); self::$ignored = (require __DIR__ . '/Resources/unidata/ignored.php'); self::$deviation = (require __DIR__ . '/Resources/unidata/deviation.php'); self::$disallowed = (require __DIR__ . '/Resources/unidata/disallowed.php'); self::$disallowed_STD3_mapped = (require __DIR__ . '/Resources/unidata/disallowed_STD3_mapped.php'); self::$disallowed_STD3_valid = (require __DIR__ . '/Resources/unidata/disallowed_STD3_valid.php'); } if (isset(self::$mapped[$codePoint])) { return array('status' => 'mapped', 'mapping' => self::$mapped[$codePoint]); } if (isset(self::$ignored[$codePoint])) { return array('status' => 'ignored'); } if (isset(self::$deviation[$codePoint])) { return array('status' => 'deviation', 'mapping' => self::$deviation[$codePoint]); } if (isset(self::$disallowed[$codePoint]) || DisallowedRanges::inRange($codePoint)) { return array('status' => 'disallowed'); } $isDisallowedMapped = isset(self::$disallowed_STD3_mapped[$codePoint]); if ($isDisallowedMapped || isset(self::$disallowed_STD3_valid[$codePoint])) { $status = 'disallowed'; if (!$useSTD3ASCIIRules) { $status = $isDisallowedMapped ? 'mapped' : 'valid'; } if ($isDisallowedMapped) { return array('status' => $status, 'mapping' => self::$disallowed_STD3_mapped[$codePoint]); } return array('status' => $status); } return array('status' => 'valid'); } } 
    3.