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567
admin/phpMyAdmin/vendor/league/uri/src/UriString.php
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567
admin/phpMyAdmin/vendor/league/uri/src/UriString.php
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<?php
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/**
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* League.Uri (https://uri.thephpleague.com)
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*
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* (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace League\Uri;
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use League\Uri\Exceptions\IdnSupportMissing;
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use League\Uri\Exceptions\SyntaxError;
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use function array_merge;
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use function defined;
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use function explode;
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use function filter_var;
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use function function_exists;
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use function gettype;
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use function idn_to_ascii;
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use function implode;
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use function inet_pton;
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use function is_object;
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use function is_scalar;
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use function method_exists;
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use function preg_match;
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use function rawurldecode;
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use function sprintf;
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use function strpos;
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use function substr;
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use const FILTER_FLAG_IPV6;
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use const FILTER_VALIDATE_IP;
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use const IDNA_ERROR_BIDI;
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use const IDNA_ERROR_CONTEXTJ;
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use const IDNA_ERROR_DISALLOWED;
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use const IDNA_ERROR_DOMAIN_NAME_TOO_LONG;
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use const IDNA_ERROR_EMPTY_LABEL;
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use const IDNA_ERROR_HYPHEN_3_4;
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use const IDNA_ERROR_INVALID_ACE_LABEL;
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use const IDNA_ERROR_LABEL_HAS_DOT;
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use const IDNA_ERROR_LABEL_TOO_LONG;
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use const IDNA_ERROR_LEADING_COMBINING_MARK;
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use const IDNA_ERROR_LEADING_HYPHEN;
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use const IDNA_ERROR_PUNYCODE;
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use const IDNA_ERROR_TRAILING_HYPHEN;
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use const INTL_IDNA_VARIANT_UTS46;
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/**
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* A class to parse a URI string according to RFC3986.
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*
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* @link https://tools.ietf.org/html/rfc3986
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* @package League\Uri
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* @author Ignace Nyamagana Butera <nyamsprod@gmail.com>
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* @since 6.0.0
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*/
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final class UriString
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{
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/**
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* Default URI component values.
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*/
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private const URI_COMPONENTS = [
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'scheme' => null, 'user' => null, 'pass' => null, 'host' => null,
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'port' => null, 'path' => '', 'query' => null, 'fragment' => null,
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];
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/**
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* Simple URI which do not need any parsing.
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*/
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private const URI_SCHORTCUTS = [
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'' => [],
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'#' => ['fragment' => ''],
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'?' => ['query' => ''],
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'?#' => ['query' => '', 'fragment' => ''],
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'/' => ['path' => '/'],
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'//' => ['host' => ''],
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];
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/**
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* Range of invalid characters in URI string.
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*/
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private const REGEXP_INVALID_URI_CHARS = '/[\x00-\x1f\x7f]/';
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/**
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* RFC3986 regular expression URI splitter.
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*
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* @link https://tools.ietf.org/html/rfc3986#appendix-B
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*/
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private const REGEXP_URI_PARTS = ',^
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(?<scheme>(?<scontent>[^:/?\#]+):)? # URI scheme component
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(?<authority>//(?<acontent>[^/?\#]*))? # URI authority part
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(?<path>[^?\#]*) # URI path component
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(?<query>\?(?<qcontent>[^\#]*))? # URI query component
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(?<fragment>\#(?<fcontent>.*))? # URI fragment component
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,x';
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/**
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* URI scheme regular expresssion.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.1
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*/
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private const REGEXP_URI_SCHEME = '/^([a-z][a-z\d\+\.\-]*)?$/i';
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/**
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* IPvFuture regular expression.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
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*/
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private const REGEXP_IP_FUTURE = '/^
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v(?<version>[A-F0-9])+\.
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(?:
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(?<unreserved>[a-z0-9_~\-\.])|
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(?<sub_delims>[!$&\'()*+,;=:]) # also include the : character
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)+
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$/ix';
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/**
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* General registered name regular expression.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
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*/
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private const REGEXP_REGISTERED_NAME = '/(?(DEFINE)
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(?<unreserved>[a-z0-9_~\-]) # . is missing as it is used to separate labels
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(?<sub_delims>[!$&\'()*+,;=])
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(?<encoded>%[A-F0-9]{2})
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(?<reg_name>(?:(?&unreserved)|(?&sub_delims)|(?&encoded))*)
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)
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^(?:(?®_name)\.)*(?®_name)\.?$/ix';
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/**
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* Invalid characters in host regular expression.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
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*/
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private const REGEXP_INVALID_HOST_CHARS = '/
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[:\/?#\[\]@ ] # gen-delims characters as well as the space character
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/ix';
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/**
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* Invalid path for URI without scheme and authority regular expression.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.3
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*/
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private const REGEXP_INVALID_PATH = ',^(([^/]*):)(.*)?/,';
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/**
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* Host and Port splitter regular expression.
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*/
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private const REGEXP_HOST_PORT = ',^(?<host>\[.*\]|[^:]*)(:(?<port>.*))?$,';
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/**
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* IDN Host detector regular expression.
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*/
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private const REGEXP_IDN_PATTERN = '/[^\x20-\x7f]/';
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/**
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* Only the address block fe80::/10 can have a Zone ID attach to
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* let's detect the link local significant 10 bits.
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*/
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private const ZONE_ID_ADDRESS_BLOCK = "\xfe\x80";
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/**
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* Generate an URI string representation from its parsed representation
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* returned by League\Uri\parse() or PHP's parse_url.
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*
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* If you supply your own array, you are responsible for providing
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* valid components without their URI delimiters.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-5.3
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* @link https://tools.ietf.org/html/rfc3986#section-7.5
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*
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* @param array{
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* scheme:?string,
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* user:?string,
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* pass:?string,
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* host:?string,
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* port:?int,
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* path:string,
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* query:?string,
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* fragment:?string
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* } $components
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*/
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public static function build(array $components): string
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{
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$result = $components['path'] ?? '';
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if (isset($components['query'])) {
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$result .= '?'.$components['query'];
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}
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if (isset($components['fragment'])) {
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$result .= '#'.$components['fragment'];
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}
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$scheme = null;
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if (isset($components['scheme'])) {
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$scheme = $components['scheme'].':';
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}
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if (!isset($components['host'])) {
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return $scheme.$result;
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}
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$scheme .= '//';
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$authority = $components['host'];
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if (isset($components['port'])) {
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$authority .= ':'.$components['port'];
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}
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if (!isset($components['user'])) {
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return $scheme.$authority.$result;
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}
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$authority = '@'.$authority;
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if (!isset($components['pass'])) {
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return $scheme.$components['user'].$authority.$result;
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}
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return $scheme.$components['user'].':'.$components['pass'].$authority.$result;
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}
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/**
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* Parse an URI string into its components.
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*
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* This method parses a URI and returns an associative array containing any
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* of the various components of the URI that are present.
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*
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* <code>
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* $components = (new Parser())->parse('http://foo@test.example.com:42?query#');
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* var_export($components);
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* //will display
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* array(
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* 'scheme' => 'http', // the URI scheme component
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* 'user' => 'foo', // the URI user component
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* 'pass' => null, // the URI pass component
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* 'host' => 'test.example.com', // the URI host component
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* 'port' => 42, // the URI port component
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* 'path' => '', // the URI path component
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* 'query' => 'query', // the URI query component
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* 'fragment' => '', // the URI fragment component
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* );
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* </code>
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*
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* The returned array is similar to PHP's parse_url return value with the following
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* differences:
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*
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* <ul>
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* <li>All components are always present in the returned array</li>
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* <li>Empty and undefined component are treated differently. And empty component is
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* set to the empty string while an undefined component is set to the `null` value.</li>
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* <li>The path component is never undefined</li>
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* <li>The method parses the URI following the RFC3986 rules but you are still
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* required to validate the returned components against its related scheme specific rules.</li>
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* </ul>
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*
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* @link https://tools.ietf.org/html/rfc3986
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*
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* @param mixed $uri any scalar or stringable object
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*
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* @throws SyntaxError if the URI contains invalid characters
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* @throws SyntaxError if the URI contains an invalid scheme
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* @throws SyntaxError if the URI contains an invalid path
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*
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* @return array{
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* scheme:?string,
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* user:?string,
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* pass:?string,
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* host:?string,
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* port:?int,
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* path:string,
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* query:?string,
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* fragment:?string
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* }
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*/
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public static function parse($uri): array
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{
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if (is_object($uri) && method_exists($uri, '__toString')) {
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$uri = (string) $uri;
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}
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if (!is_scalar($uri)) {
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throw new \TypeError(sprintf('The uri must be a scalar or a stringable object `%s` given', gettype($uri)));
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}
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$uri = (string) $uri;
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if (isset(self::URI_SCHORTCUTS[$uri])) {
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/** @var array{scheme:?string, user:?string, pass:?string, host:?string, port:?int, path:string, query:?string, fragment:?string} $components */
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$components = array_merge(self::URI_COMPONENTS, self::URI_SCHORTCUTS[$uri]);
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return $components;
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}
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if (1 === preg_match(self::REGEXP_INVALID_URI_CHARS, $uri)) {
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throw new SyntaxError(sprintf('The uri `%s` contains invalid characters', $uri));
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}
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//if the first character is a known URI delimiter parsing can be simplified
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$first_char = $uri[0];
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//The URI is made of the fragment only
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if ('#' === $first_char) {
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[, $fragment] = explode('#', $uri, 2);
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$components = self::URI_COMPONENTS;
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$components['fragment'] = $fragment;
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return $components;
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}
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//The URI is made of the query and fragment
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if ('?' === $first_char) {
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[, $partial] = explode('?', $uri, 2);
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[$query, $fragment] = explode('#', $partial, 2) + [1 => null];
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$components = self::URI_COMPONENTS;
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$components['query'] = $query;
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$components['fragment'] = $fragment;
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return $components;
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}
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//use RFC3986 URI regexp to split the URI
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preg_match(self::REGEXP_URI_PARTS, $uri, $parts);
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$parts += ['query' => '', 'fragment' => ''];
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if (':' === $parts['scheme'] || 1 !== preg_match(self::REGEXP_URI_SCHEME, $parts['scontent'])) {
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throw new SyntaxError(sprintf('The uri `%s` contains an invalid scheme', $uri));
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}
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if ('' === $parts['scheme'].$parts['authority'] && 1 === preg_match(self::REGEXP_INVALID_PATH, $parts['path'])) {
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throw new SyntaxError(sprintf('The uri `%s` contains an invalid path.', $uri));
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}
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/** @var array{scheme:?string, user:?string, pass:?string, host:?string, port:?int, path:string, query:?string, fragment:?string} $components */
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$components = array_merge(
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self::URI_COMPONENTS,
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'' === $parts['authority'] ? [] : self::parseAuthority($parts['acontent']),
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[
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'path' => $parts['path'],
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'scheme' => '' === $parts['scheme'] ? null : $parts['scontent'],
|
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'query' => '' === $parts['query'] ? null : $parts['qcontent'],
|
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'fragment' => '' === $parts['fragment'] ? null : $parts['fcontent'],
|
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]
|
||||
);
|
||||
|
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return $components;
|
||||
}
|
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|
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/**
|
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* Parses the URI authority part.
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*
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* @link https://tools.ietf.org/html/rfc3986#section-3.2
|
||||
*
|
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* @throws SyntaxError If the port component is invalid
|
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*
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* @return array{user:?string, pass:?string, host:?string, port:?int}
|
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*/
|
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private static function parseAuthority(string $authority): array
|
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{
|
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$components = ['user' => null, 'pass' => null, 'host' => '', 'port' => null];
|
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if ('' === $authority) {
|
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return $components;
|
||||
}
|
||||
|
||||
$parts = explode('@', $authority, 2);
|
||||
if (isset($parts[1])) {
|
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[$components['user'], $components['pass']] = explode(':', $parts[0], 2) + [1 => null];
|
||||
}
|
||||
|
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preg_match(self::REGEXP_HOST_PORT, $parts[1] ?? $parts[0], $matches);
|
||||
$matches += ['port' => ''];
|
||||
|
||||
$components['port'] = self::filterPort($matches['port']);
|
||||
$components['host'] = self::filterHost($matches['host']);
|
||||
|
||||
return $components;
|
||||
}
|
||||
|
||||
/**
|
||||
* Filter and format the port component.
|
||||
*
|
||||
* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
|
||||
*
|
||||
* @throws SyntaxError if the registered name is invalid
|
||||
*/
|
||||
private static function filterPort(string $port): ?int
|
||||
{
|
||||
if ('' === $port) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (1 === preg_match('/^\d*$/', $port)) {
|
||||
return (int) $port;
|
||||
}
|
||||
|
||||
throw new SyntaxError(sprintf('The port `%s` is invalid', $port));
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns whether a hostname is valid.
|
||||
*
|
||||
* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
|
||||
*
|
||||
* @throws SyntaxError if the registered name is invalid
|
||||
*/
|
||||
private static function filterHost(string $host): string
|
||||
{
|
||||
if ('' === $host) {
|
||||
return $host;
|
||||
}
|
||||
|
||||
if ('[' !== $host[0] || ']' !== substr($host, -1)) {
|
||||
return self::filterRegisteredName($host);
|
||||
}
|
||||
|
||||
if (!self::isIpHost(substr($host, 1, -1))) {
|
||||
throw new SyntaxError(sprintf('Host `%s` is invalid : the IP host is malformed', $host));
|
||||
}
|
||||
|
||||
return $host;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns whether the host is an IPv4 or a registered named.
|
||||
*
|
||||
* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
|
||||
*
|
||||
* @throws SyntaxError if the registered name is invalid
|
||||
* @throws IdnSupportMissing if IDN support or ICU requirement are not available or met.
|
||||
*/
|
||||
private static function filterRegisteredName(string $host): string
|
||||
{
|
||||
// @codeCoverageIgnoreStart
|
||||
// added because it is not possible in travis to disabled the ext/intl extension
|
||||
// see travis issue https://github.com/travis-ci/travis-ci/issues/4701
|
||||
static $idn_support = null;
|
||||
$idn_support = $idn_support ?? function_exists('idn_to_ascii') && defined('INTL_IDNA_VARIANT_UTS46');
|
||||
// @codeCoverageIgnoreEnd
|
||||
|
||||
$formatted_host = rawurldecode($host);
|
||||
if (1 === preg_match(self::REGEXP_REGISTERED_NAME, $formatted_host)) {
|
||||
if (false === strpos($formatted_host, 'xn--')) {
|
||||
return $host;
|
||||
}
|
||||
|
||||
// @codeCoverageIgnoreStart
|
||||
if (!$idn_support) {
|
||||
throw new IdnSupportMissing(sprintf('the host `%s` could not be processed for IDN. Verify that ext/intl is installed for IDN support and that ICU is at least version 4.6.', $host));
|
||||
}
|
||||
// @codeCoverageIgnoreEnd
|
||||
|
||||
$unicode = idn_to_utf8($host, 0, INTL_IDNA_VARIANT_UTS46, $arr);
|
||||
if (0 !== $arr['errors']) {
|
||||
throw new SyntaxError(sprintf('The host `%s` is invalid : %s', $host, self::getIDNAErrors($arr['errors'])));
|
||||
}
|
||||
|
||||
// @codeCoverageIgnoreStart
|
||||
if (false === $unicode) {
|
||||
throw new IdnSupportMissing(sprintf('The Intl extension is misconfigured for %s, please correct this issue before proceeding.', PHP_OS));
|
||||
}
|
||||
// @codeCoverageIgnoreEnd
|
||||
|
||||
return $host;
|
||||
}
|
||||
|
||||
//to test IDN host non-ascii characters must be present in the host
|
||||
if (1 !== preg_match(self::REGEXP_IDN_PATTERN, $formatted_host)) {
|
||||
throw new SyntaxError(sprintf('Host `%s` is invalid : the host is not a valid registered name', $host));
|
||||
}
|
||||
|
||||
// @codeCoverageIgnoreStart
|
||||
if (!$idn_support) {
|
||||
throw new IdnSupportMissing(sprintf('the host `%s` could not be processed for IDN. Verify that ext/intl is installed for IDN support and that ICU is at least version 4.6.', $host));
|
||||
}
|
||||
// @codeCoverageIgnoreEnd
|
||||
|
||||
$retval = idn_to_ascii($formatted_host, 0, INTL_IDNA_VARIANT_UTS46, $arr);
|
||||
|
||||
if ([] === $arr) {
|
||||
throw new SyntaxError(sprintf('Host `%s` is not a valid IDN host', $host));
|
||||
}
|
||||
|
||||
if (0 !== $arr['errors']) {
|
||||
throw new SyntaxError(sprintf('Host `%s` is not a valid IDN host : %s', $host, self::getIDNAErrors($arr['errors'])));
|
||||
}
|
||||
|
||||
// @codeCoverageIgnoreStart
|
||||
if (false === $retval) {
|
||||
throw new IdnSupportMissing(sprintf('The Intl extension is misconfigured for %s, please correct this issue before proceeding.', PHP_OS));
|
||||
}
|
||||
// @codeCoverageIgnoreEnd
|
||||
|
||||
if (false !== strpos($retval, '%')) {
|
||||
throw new SyntaxError(sprintf('Host `%s` is invalid : the host is not a valid registered name', $host));
|
||||
}
|
||||
|
||||
return $host;
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieves and format IDNA conversion error message.
|
||||
*
|
||||
* @link http://icu-project.org/apiref/icu4j/com/ibm/icu/text/IDNA.Error.html
|
||||
*/
|
||||
private static function getIDNAErrors(int $error_byte): string
|
||||
{
|
||||
/**
|
||||
* IDNA errors.
|
||||
*/
|
||||
static $idn_errors = [
|
||||
IDNA_ERROR_EMPTY_LABEL => 'a non-final domain name label (or the whole domain name) is empty',
|
||||
IDNA_ERROR_LABEL_TOO_LONG => 'a domain name label is longer than 63 bytes',
|
||||
IDNA_ERROR_DOMAIN_NAME_TOO_LONG => 'a domain name is longer than 255 bytes in its storage form',
|
||||
IDNA_ERROR_LEADING_HYPHEN => 'a label starts with a hyphen-minus ("-")',
|
||||
IDNA_ERROR_TRAILING_HYPHEN => 'a label ends with a hyphen-minus ("-")',
|
||||
IDNA_ERROR_HYPHEN_3_4 => 'a label contains hyphen-minus ("-") in the third and fourth positions',
|
||||
IDNA_ERROR_LEADING_COMBINING_MARK => 'a label starts with a combining mark',
|
||||
IDNA_ERROR_DISALLOWED => 'a label or domain name contains disallowed characters',
|
||||
IDNA_ERROR_PUNYCODE => 'a label starts with "xn--" but does not contain valid Punycode',
|
||||
IDNA_ERROR_LABEL_HAS_DOT => 'a label contains a dot=full stop',
|
||||
IDNA_ERROR_INVALID_ACE_LABEL => 'An ACE label does not contain a valid label string',
|
||||
IDNA_ERROR_BIDI => 'a label does not meet the IDNA BiDi requirements (for right-to-left characters)',
|
||||
IDNA_ERROR_CONTEXTJ => 'a label does not meet the IDNA CONTEXTJ requirements',
|
||||
];
|
||||
|
||||
$res = [];
|
||||
foreach ($idn_errors as $error => $reason) {
|
||||
if ($error === ($error_byte & $error)) {
|
||||
$res[] = $reason;
|
||||
}
|
||||
}
|
||||
|
||||
return [] === $res ? 'Unknown IDNA conversion error.' : implode(', ', $res).'.';
|
||||
}
|
||||
|
||||
/**
|
||||
* Validates a IPv6/IPvfuture host.
|
||||
*
|
||||
* @link https://tools.ietf.org/html/rfc3986#section-3.2.2
|
||||
* @link https://tools.ietf.org/html/rfc6874#section-2
|
||||
* @link https://tools.ietf.org/html/rfc6874#section-4
|
||||
*/
|
||||
private static function isIpHost(string $ip_host): bool
|
||||
{
|
||||
if (false !== filter_var($ip_host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (1 === preg_match(self::REGEXP_IP_FUTURE, $ip_host, $matches)) {
|
||||
return !in_array($matches['version'], ['4', '6'], true);
|
||||
}
|
||||
|
||||
$pos = strpos($ip_host, '%');
|
||||
if (false === $pos || 1 === preg_match(
|
||||
self::REGEXP_INVALID_HOST_CHARS,
|
||||
rawurldecode(substr($ip_host, $pos))
|
||||
)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
$ip_host = substr($ip_host, 0, $pos);
|
||||
|
||||
return false !== filter_var($ip_host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)
|
||||
&& 0 === strpos((string) inet_pton($ip_host), self::ZONE_ID_ADDRESS_BLOCK);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue