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Diffstat (limited to 'vendor/league/uri-interfaces/src/Idna/Idna.php')
| -rw-r--r-- | vendor/league/uri-interfaces/src/Idna/Idna.php | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/vendor/league/uri-interfaces/src/Idna/Idna.php b/vendor/league/uri-interfaces/src/Idna/Idna.php new file mode 100644 index 0000000..5930687 --- /dev/null +++ b/vendor/league/uri-interfaces/src/Idna/Idna.php @@ -0,0 +1,212 @@ +<?php + +/** + * League.Uri (https://uri.thephpleague.com) + * + * (c) Ignace Nyamagana Butera <[email protected]> + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +declare(strict_types=1); + +namespace League\Uri\Idna; + +use League\Uri\Exceptions\IdnaConversionFailed; +use League\Uri\Exceptions\IdnSupportMissing; +use League\Uri\Exceptions\SyntaxError; +use function defined; +use function function_exists; +use function idn_to_ascii; +use function idn_to_utf8; +use function rawurldecode; +use const INTL_IDNA_VARIANT_UTS46; + +/** + * @see https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/uidna_8h.html + */ +final class Idna +{ + private const REGEXP_IDNA_PATTERN = '/[^\x20-\x7f]/'; + private const MAX_DOMAIN_LENGTH = 253; + private const MAX_LABEL_LENGTH = 63; + + /** + * General registered name regular expression. + * + * @see https://tools.ietf.org/html/rfc3986#section-3.2.2 + * @see https://regex101.com/r/fptU8V/1 + */ + private const REGEXP_REGISTERED_NAME = '/ + (?(DEFINE) + (?<unreserved>[a-z0-9_~\-]) # . is missing as it is used to separate labels + (?<sub_delims>[!$&\'()*+,;=]) + (?<encoded>%[A-F0-9]{2}) + (?<reg_name>(?:(?&unreserved)|(?&sub_delims)|(?&encoded))*) + ) + ^(?:(?®_name)\.)*(?®_name)\.?$ + /ix'; + + /** + * IDNA options. + */ + public const IDNA_DEFAULT = 0; + public const IDNA_ALLOW_UNASSIGNED = 1; + public const IDNA_USE_STD3_RULES = 2; + public const IDNA_CHECK_BIDI = 4; + public const IDNA_CHECK_CONTEXTJ = 8; + public const IDNA_NONTRANSITIONAL_TO_ASCII = 0x10; + public const IDNA_NONTRANSITIONAL_TO_UNICODE = 0x20; + public const IDNA_CHECK_CONTEXTO = 0x40; + + /** + * IDNA errors. + */ + public const ERROR_NONE = 0; + public const ERROR_EMPTY_LABEL = 1; + public const ERROR_LABEL_TOO_LONG = 2; + public const ERROR_DOMAIN_NAME_TOO_LONG = 4; + public const ERROR_LEADING_HYPHEN = 8; + public const ERROR_TRAILING_HYPHEN = 0x10; + public const ERROR_HYPHEN_3_4 = 0x20; + public const ERROR_LEADING_COMBINING_MARK = 0x40; + public const ERROR_DISALLOWED = 0x80; + public const ERROR_PUNYCODE = 0x100; + public const ERROR_LABEL_HAS_DOT = 0x200; + public const ERROR_INVALID_ACE_LABEL = 0x400; + public const ERROR_BIDI = 0x800; + public const ERROR_CONTEXTJ = 0x1000; + public const ERROR_CONTEXTO_PUNCTUATION = 0x2000; + public const ERROR_CONTEXTO_DIGITS = 0x4000; + + /** + * IDNA default options. + */ + public const IDNA2008_ASCII = self::IDNA_NONTRANSITIONAL_TO_ASCII + | self::IDNA_CHECK_BIDI + | self::IDNA_USE_STD3_RULES + | self::IDNA_CHECK_CONTEXTJ; + public const IDNA2008_UNICODE = self::IDNA_NONTRANSITIONAL_TO_UNICODE + | self::IDNA_CHECK_BIDI + | self::IDNA_USE_STD3_RULES + | self::IDNA_CHECK_CONTEXTJ; + + /** + * @codeCoverageIgnore + */ + private static function supportsIdna(): void + { + static $idnSupport; + if (null === $idnSupport) { + $idnSupport = function_exists('\idn_to_ascii') && defined('\INTL_IDNA_VARIANT_UTS46'); + } + + if (!$idnSupport) { + throw new IdnSupportMissing('IDN host can not be processed. Verify that ext/intl is installed for IDN support and that ICU is at least version 4.6.'); + } + } + + /** + * Converts the input to its IDNA ASCII form. + * + * This method returns the string converted to IDN ASCII form + * + * @throws SyntaxError if the string can not be converted to ASCII using IDN UTS46 algorithm + */ + public static function toAscii(string $domain, int $options): IdnaInfo + { + $domain = rawurldecode($domain); + + if (1 === preg_match(self::REGEXP_IDNA_PATTERN, $domain)) { + self::supportsIdna(); + + /* @param-out array{errors: int, isTransitionalDifferent: bool, result: string} $idnaInfo */ + idn_to_ascii($domain, $options, INTL_IDNA_VARIANT_UTS46, $idnaInfo); + if ([] === $idnaInfo) { + return IdnaInfo::fromIntl([ + 'result' => strtolower($domain), + 'isTransitionalDifferent' => false, + 'errors' => self::validateDomainAndLabelLength($domain), + ]); + } + + /* @var array{errors: int, isTransitionalDifferent: bool, result: string} $idnaInfo */ + return IdnaInfo::fromIntl($idnaInfo); + } + + $error = self::ERROR_NONE; + if (1 !== preg_match(self::REGEXP_REGISTERED_NAME, $domain)) { + $error |= self::ERROR_DISALLOWED; + } + + return IdnaInfo::fromIntl([ + 'result' => strtolower($domain), + 'isTransitionalDifferent' => false, + 'errors' => self::validateDomainAndLabelLength($domain) | $error, + ]); + } + + /** + * Converts the input to its IDNA UNICODE form. + * + * This method returns the string converted to IDN UNICODE form + * + * @throws SyntaxError if the string can not be converted to UNICODE using IDN UTS46 algorithm + */ + public static function toUnicode(string $domain, int $options): IdnaInfo + { + $domain = rawurldecode($domain); + + if (false === stripos($domain, 'xn--')) { + return IdnaInfo::fromIntl(['result' => $domain, 'isTransitionalDifferent' => false, 'errors' => self::ERROR_NONE]); + } + + self::supportsIdna(); + + /* @param-out array{errors: int, isTransitionalDifferent: bool, result: string} $idnaInfo */ + idn_to_utf8($domain, $options, INTL_IDNA_VARIANT_UTS46, $idnaInfo); + if ([] === $idnaInfo) { + throw IdnaConversionFailed::dueToInvalidHost($domain); + } + + /* @var array{errors: int, isTransitionalDifferent: bool, result: string} $idnaInfo */ + return IdnaInfo::fromIntl($idnaInfo); + } + + /** + * Adapted from https://github.com/TRowbotham/idna. + * + * @see https://github.com/TRowbotham/idna/blob/master/src/Idna.php#L236 + */ + private static function validateDomainAndLabelLength(string $domain): int + { + $error = self::ERROR_NONE; + $labels = explode('.', $domain); + $maxDomainSize = self::MAX_DOMAIN_LENGTH; + $length = count($labels); + + // If the last label is empty and it is not the first label, then it is the root label. + // Increase the max size by 1, making it 254, to account for the root label's "." + // delimiter. This also means we don't need to check the last label's length for being too + // long. + if ($length > 1 && $labels[$length - 1] === '') { + ++$maxDomainSize; + array_pop($labels); + } + + if (strlen($domain) > $maxDomainSize) { + $error |= self::ERROR_DOMAIN_NAME_TOO_LONG; + } + + foreach ($labels as $label) { + if (strlen($label) > self::MAX_LABEL_LENGTH) { + $error |= self::ERROR_LABEL_TOO_LONG; + + break; + } + } + + return $error; + } +} |