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<?php |
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/* |
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* This file is part of the API Platform project. |
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* |
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* (c) Kévin Dunglas <[email protected]> |
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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 ApiPlatform\Core\Util; |
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use Symfony\Component\HttpFoundation\Request; |
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/** |
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* Utility functions for working with Symfony's HttpFoundation request. |
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* |
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* @internal |
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* |
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* @author Teoh Han Hui <[email protected]> |
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* @author Vincent Chalamon <[email protected]> |
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*/ |
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final class RequestParser |
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{ |
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private function __construct() |
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{ |
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} |
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/** |
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* Gets a fixed request. |
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* |
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* @param Request $request |
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* |
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* @return Request |
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*/ |
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public static function parseAndDuplicateRequest(Request $request): Request |
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{ |
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$query = self::parseRequestParams(self::getQueryString($request) ?? ''); |
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$body = self::parseRequestParams($request->getContent()); |
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return $request->duplicate($query, $body); |
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} |
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/** |
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* Parses request parameters from the specified source. |
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* |
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* @author Rok Kralj |
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* |
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* @see https://stackoverflow.com/a/18209799/1529493 |
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* |
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* @param string $source |
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* |
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* @return array |
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*/ |
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public static function parseRequestParams(string $source): array |
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{ |
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// '[' is urlencoded ('%5B') in the input, but we must urldecode it in order |
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// to find it when replacing names with the regexp below. |
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$source = str_replace('%5B', '[', $source); |
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$source = preg_replace_callback( |
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'/(^|(?<=&))[^=[&]+/', |
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function ($key) { |
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return bin2hex(urldecode($key[0])); |
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}, |
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$source |
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); |
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// parse_str urldecodes both keys and values in resulting array. |
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parse_str($source, $params); |
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return array_combine(array_map('hex2bin', array_keys($params)), $params); |
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} |
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/** |
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* Generates the normalized query string for the Request. |
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* |
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* It builds a normalized query string, where keys/value pairs are alphabetized |
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* and have consistent escaping. |
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* |
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* @return string|null A normalized query string for the Request |
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*/ |
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public static function getQueryString(Request $request) |
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{ |
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$qs = $request->server->get('QUERY_STRING'); |
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if ('' === $qs) { |
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return null; |
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} |
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$parts = []; |
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foreach (explode('&', $qs) as $param) { |
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if ('' === $param || '=' === $param[0]) { |
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// Ignore useless delimiters, e.g. "x=y&". |
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// Also ignore pairs with empty key, even if there was a value, e.g. "=value", as such nameless values cannot be retrieved anyway. |
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// PHP also does not include them when building _GET. |
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continue; |
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} |
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$keyValuePair = explode('=', $param, 2); |
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// GET parameters, that are submitted from a HTML form, encode spaces as "+" by default (as defined in enctype application/x-www-form-urlencoded). |
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// PHP also converts "+" to spaces when filling the global _GET or when using the function parse_str. This is why we use urldecode and then normalize to |
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// RFC 3986 with rawurlencode. |
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$parts[] = isset($keyValuePair[1]) ? |
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rawurlencode(urldecode($keyValuePair[0])).'='.rawurlencode(urldecode($keyValuePair[1])) : |
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rawurlencode(urldecode($keyValuePair[0])); |
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} |
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return implode('&', $parts); |
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} |
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} |
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api-platform /
core
