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<?php |
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/** |
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* This file is part of the adlogix/guzzle-atlassian-connect-middleware package. |
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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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namespace Adlogix\GuzzleAtlassianConnect\Helpers; |
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/** |
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* Class QSH |
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* QSH is a Query String Hash requested by Atlassian in the JWT token |
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* @see https://developer.atlassian.com/static/connect/docs/latest/concepts/understanding-jwt.html#qsh |
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* @package Adlogix\GuzzleAtlassianConnect\Helpers |
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* @author Cedric Michaux <[email protected]> |
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*/ |
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class Qsh |
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{ |
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/** |
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* @param $method |
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* @param $url |
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* |
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* @return string |
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*/ |
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public static function create($method, $url) |
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{ |
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$method = strtoupper($method); |
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$parts = parse_url($url); |
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$path = self::getCorrectPath($parts['path']); |
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$canonicalQuery = ''; |
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if (array_key_exists('query', $parts)) { |
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$canonicalQuery = self::getCanonicalQuery($parts['query']); |
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} |
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$qshString = $method . '&' . $path . '&' . $canonicalQuery; |
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$qsh = hash('sha256', $qshString); |
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return $qsh; |
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} |
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/** |
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* |
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* @param string $path |
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* |
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* @return mixed |
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*/ |
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private static function getCorrectPath($path) |
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{ |
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$path = str_replace(' ', '%20', $path); |
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if ('/' !== $path[0]) { |
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$path = '/' . $path; |
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} |
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return $path; |
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} |
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/** |
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* @param string $query |
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* |
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* @return string |
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*/ |
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private static function getCanonicalQuery($query = '') |
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{ |
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if (empty($query)) { |
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return $query; |
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} |
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$queryArray = self::encodeQueryParts($query); |
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ksort($queryArray); |
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$query = self::buildQuery($queryArray); |
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return $query; |
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} |
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/** |
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* @param string $query |
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* |
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* @return array |
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*/ |
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private static function encodeQueryParts($query) |
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{ |
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$queryParts = explode('&', $query); |
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$queryArray = []; |
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foreach ($queryParts as $queryPart) { |
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$pieces = explode('=', $queryPart, 2); |
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$key = rawurlencode($pieces[0]); |
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$value = rawurlencode($pieces[1]); |
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$queryArray[$key][] = $value; |
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} |
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return $queryArray; |
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} |
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/** |
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* @param array $queryArray |
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* |
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* @return string |
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*/ |
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private static function buildQuery($queryArray) |
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{ |
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$query = ''; |
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foreach ($queryArray as $key => $pieceOfQuery) { |
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$pieceOfQuery = implode(',', $pieceOfQuery); |
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$query .= $key . '=' . $pieceOfQuery . '&'; |
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} |
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$query = rtrim($query, '&'); |
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return $query; |
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} |
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} |
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adlogix /
guzzle-atlassian-connect-middleware
