pictcode / lib / Cake / Network / Http / DigestAuthentication.php @ master
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<?php
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/**
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* Digest authentication
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Network.Http
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* @since CakePHP(tm) v 2.0.0
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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/**
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* Digest authentication
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*
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* @package Cake.Network.Http
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*/
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class DigestAuthentication { |
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/**
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* Authentication
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*
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* @param HttpSocket $http Http socket instance.
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* @param array &$authInfo Authentication info.
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* @return void
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* @link http://www.ietf.org/rfc/rfc2617.txt
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*/
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public static function authentication(HttpSocket $http, &$authInfo) { |
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if (isset($authInfo['user'], $authInfo['pass'])) { |
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if (!isset($authInfo['realm']) && !static::_getServerInformation($http, $authInfo)) { |
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return;
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} |
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$http->request['header']['Authorization'] = static::_generateHeader($http, $authInfo); |
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} |
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} |
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/**
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* Retrieve information about the authentication
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*
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* @param HttpSocket $http Http socket instance.
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* @param array &$authInfo Authentication info.
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* @return bool
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*/
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protected static function _getServerInformation(HttpSocket $http, &$authInfo) { |
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$originalRequest = $http->request; |
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$http->configAuth(false); |
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$http->request($http->request); |
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$http->request = $originalRequest; |
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$http->configAuth('Digest', $authInfo); |
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if (empty($http->response['header']['WWW-Authenticate'])) { |
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return false; |
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} |
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preg_match_all('@(\w+)=(?:(?:")([^"]+)"|([^\s,$]+))@', $http->response['header']['WWW-Authenticate'], $matches, PREG_SET_ORDER); |
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foreach ($matches as $match) { |
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$authInfo[$match[1]] = $match[2]; |
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} |
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if (!empty($authInfo['qop']) && empty($authInfo['nc'])) { |
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$authInfo['nc'] = 1; |
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} |
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return true; |
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} |
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/**
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* Generate the header Authorization
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*
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* @param HttpSocket $http Http socket instance.
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* @param array &$authInfo Authentication info.
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* @return string
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*/
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protected static function _generateHeader(HttpSocket $http, &$authInfo) { |
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$a1 = md5($authInfo['user'] . ':' . $authInfo['realm'] . ':' . $authInfo['pass']); |
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$a2 = md5($http->request['method'] . ':' . $http->request['uri']['path']); |
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if (empty($authInfo['qop'])) { |
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$response = md5($a1 . ':' . $authInfo['nonce'] . ':' . $a2); |
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} else {
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$authInfo['cnonce'] = uniqid(); |
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$nc = sprintf('%08x', $authInfo['nc']++); |
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$response = md5($a1 . ':' . $authInfo['nonce'] . ':' . $nc . ':' . $authInfo['cnonce'] . ':auth:' . $a2); |
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} |
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$authHeader = 'Digest '; |
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$authHeader .= 'username="' . str_replace(array('\\', '"'), array('\\\\', '\\"'), $authInfo['user']) . '", '; |
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$authHeader .= 'realm="' . $authInfo['realm'] . '", '; |
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$authHeader .= 'nonce="' . $authInfo['nonce'] . '", '; |
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$authHeader .= 'uri="' . $http->request['uri']['path'] . '", '; |
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$authHeader .= 'response="' . $response . '"'; |
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if (!empty($authInfo['opaque'])) { |
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$authHeader .= ', opaque="' . $authInfo['opaque'] . '"'; |
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} |
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if (!empty($authInfo['qop'])) { |
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$authHeader .= ', qop="auth", nc=' . $nc . ', cnonce="' . $authInfo['cnonce'] . '"'; |
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} |
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return $authHeader; |
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} |
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} |