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4b91712791
internationalizing trigger_error for security lib git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@6835 3807eeeb-6ff5-0310-8944-8be069107fe0
738 lines
21 KiB
PHP
738 lines
21 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* Short description for file.
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*
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* Long description for file
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright 2005-2008, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright 2005-2008, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.controller.components
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* @since CakePHP(tm) v 0.10.8.2156
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Short description for file.
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*
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* Long description for file
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*
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* @package cake
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* @subpackage cake.cake.libs.controller.components
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*/
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class SecurityComponent extends Object {
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/**
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* The controller method that will be called if this request is black-hole'd
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*
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* @var string
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* @access public
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*/
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var $blackHoleCallback = null;
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/**
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* List of controller actions for which a POST request is required
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*
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* @var array
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* @access public
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* @see SecurityComponent::requirePost()
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*/
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var $requirePost = array();
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/**
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* List of controller actions for which a GET request is required
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireGet()
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*/
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var $requireGet = array();
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/**
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* List of controller actions for which a PUT request is required
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*
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* @var array
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* @access public
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* @see SecurityComponent::requirePut()
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*/
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var $requirePut = array();
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/**
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* List of controller actions for which a DELETE request is required
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireDelete()
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*/
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var $requireDelete = array();
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/**
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* List of actions that require an SSL-secured connection
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireSecure()
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*/
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var $requireSecure = array();
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/**
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* List of actions that require a valid authentication key
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireAuth()
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*/
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var $requireAuth = array();
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/**
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* List of actions that require an HTTP-authenticated login (basic or digest)
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireLogin()
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*/
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var $requireLogin = array();
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/**
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* Login options for SecurityComponent::requireLogin()
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireLogin()
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*/
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var $loginOptions = array('type' => '', 'prompt' => null);
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/**
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* An associative array of usernames/passwords used for HTTP-authenticated logins.
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* If using digest authentication, passwords should be MD5-hashed.
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireLogin()
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*/
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var $loginUsers = array();
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/**
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* Controllers from which actions of the current controller are allowed to receive
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* requests.
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireAuth()
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*/
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var $allowedControllers = array();
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/**
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* Actions from which actions of the current controller are allowed to receive
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* requests.
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*
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* @var array
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* @access public
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* @see SecurityComponent::requireAuth()
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*/
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var $allowedActions = array();
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/**
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* Form fields to disable
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*
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* @var array
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* @access public
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*/
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var $disabledFields = array();
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/**
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* Other components used by the Security component
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*
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* @var array
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* @access public
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*/
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var $components = array('RequestHandler', 'Session');
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/**
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* Holds the current action of the controller
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*
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* @var string
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*/
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var $__action = null;
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/**
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* Component startup. All security checking happens here.
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*
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* @param object $controller Instantiating controller
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* @access public
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*/
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function startup(&$controller) {
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$this->__action = strtolower($controller->action);
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$this->__methodsRequired($controller);
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$this->__secureRequired($controller);
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$this->__authRequired($controller);
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$this->__loginRequired($controller);
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if ((!isset($controller->params['requested']) || $controller->params['requested'] != 1) && ($this->RequestHandler->isPost() || $this->RequestHandler->isPut())) {
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$this->__validatePost($controller);
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}
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$this->__generateToken($controller);
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}
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/**
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* Sets the actions that require a POST request, or empty for all actions
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*
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* @access public
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*/
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function requirePost() {
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$args = func_get_args();
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$this->__requireMethod('Post', $args);
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}
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/**
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* Sets the actions that require a GET request, or empty for all actions
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*
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* @access public
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*/
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function requireGet() {
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$args = func_get_args();
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$this->__requireMethod('Get', $args);
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}
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/**
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* Sets the actions that require a PUT request, or empty for all actions
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*
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* @access public
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*/
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function requirePut() {
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$args = func_get_args();
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$this->__requireMethod('Put', $args);
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}
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/**
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* Sets the actions that require a DELETE request, or empty for all actions
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*
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* @access public
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*/
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function requireDelete() {
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$args = func_get_args();
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$this->__requireMethod('Delete', $args);
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}
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/**
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* Sets the actions that require a request that is SSL-secured, or empty for all actions
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*
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* @access public
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*/
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function requireSecure() {
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$args = func_get_args();
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$this->__requireMethod('Secure', $args);
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}
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/**
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* Sets the actions that require an authenticated request, or empty for all actions
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*
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* @access public
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*/
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function requireAuth() {
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$args = func_get_args();
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$this->__requireMethod('Auth', $args);
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}
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/**
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* Sets the actions that require an HTTP-authenticated request, or empty for all actions
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*
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* @access public
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*/
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function requireLogin() {
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$args = func_get_args();
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$base = $this->loginOptions;
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foreach ($args as $i => $arg) {
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if (is_array($arg)) {
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$this->loginOptions = $arg;
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unset($args[$i]);
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}
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}
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$this->loginOptions = array_merge($base, $this->loginOptions);
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$this->__requireMethod('Login', $args);
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if (isset($this->loginOptions['users'])) {
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$this->loginUsers =& $this->loginOptions['users'];
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}
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}
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/**
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* Attempts to validate the login credentials for an HTTP-authenticated request
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*
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* @param string $type Either 'basic', 'digest', or null. If null/empty, will try both.
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* @return mixed If successful, returns an array with login name and password, otherwise null.
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* @access public
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*/
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function loginCredentials($type = null) {
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switch (strtolower($type)) {
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case 'basic':
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$login = array('username' => env('PHP_AUTH_USER'), 'password' => env('PHP_AUTH_PW'));
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if (!empty($login['username'])) {
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return $login;
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}
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break;
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case 'digest':
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default:
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$digest = null;
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if (version_compare(phpversion(), '5.1') != -1) {
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$digest = env('PHP_AUTH_DIGEST');
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} elseif (function_exists('apache_request_headers')) {
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$headers = apache_request_headers();
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if (isset($headers['Authorization']) && !empty($headers['Authorization']) && substr($headers['Authorization'], 0, 7) == 'Digest ') {
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$digest = substr($headers['Authorization'], 7);
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}
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} else {
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// Server doesn't support digest-auth headers
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trigger_error(__('SecurityComponent::loginCredentials() - Server does not support digest authentication', true), E_USER_WARNING);
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}
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if (!empty($digest)) {
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return $this->parseDigestAuthData($digest);
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}
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break;
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}
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return null;
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}
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/**
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* Generates the text of an HTTP-authentication request header from an array of options..
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*
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* @param array $options Set of options for header
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* @return string HTTP-authentication request header
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* @access public
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*/
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function loginRequest($options = array()) {
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$options = array_merge($this->loginOptions, $options);
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$this->__setLoginDefaults($options);
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$auth = 'WWW-Authenticate: ' . ucfirst($options['type']);
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$out = array('realm="' . $options['realm'] . '"');
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if (strtolower($options['type']) == 'digest') {
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$out[] = 'qop="auth"';
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$out[] = 'nonce="' . uniqid() . '"'; //str_replace('-', '', String::uuid())
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$out[] = 'opaque="' . md5($options['realm']).'"';
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}
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return $auth . ' ' . join(',', $out);
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}
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/**
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* Parses an HTTP digest authentication response, and returns an array of the data, or null on failure.
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*
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* @param string $digest Digest authentication response
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* @return array Digest authentication parameters
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* @access public
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*/
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function parseDigestAuthData($digest) {
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if (substr($digest, 0, 7) == 'Digest ') {
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$digest = substr($digest, 7);
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}
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$keys = array();
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$match = array();
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$req = array('nonce' => 1, 'nc' => 1, 'cnonce' => 1, 'qop' => 1, 'username' => 1, 'uri' => 1, 'response' => 1);
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preg_match_all('@(\w+)=([\'"]?)([a-zA-Z0-9=./\_-]+)\2@', $digest, $match, PREG_SET_ORDER);
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foreach ($match as $i) {
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$keys[$i[1]] = $i[3];
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unset($req[$i[1]]);
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}
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if (empty($req)) {
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return $keys;
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} else {
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return null;
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}
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}
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/**
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* Generates a hash to be compared with an HTTP digest-authenticated response
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*
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* @param array $data HTTP digest response data, as parsed by SecurityComponent::parseDigestAuthData()
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* @return string Digest authentication hash
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* @access public
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* @see SecurityComponent::parseDigestAuthData()
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*/
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function generateDigestResponseHash($data) {
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return md5(
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md5($data['username'] . ':' . $this->loginOptions['realm'] . ':' . $this->loginUsers[$data['username']]) .
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':' . $data['nonce'] . ':' . $data['nc'] . ':' . $data['cnonce'] . ':' . $data['qop'] . ':' .
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md5(env('REQUEST_METHOD') . ':' . $data['uri'])
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);
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}
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/**
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* Black-hole an invalid request with a 404 error or custom callback. If SecurityComponent::$blackHoleCallback
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* is specified, it will use this callback by executing the method indicated in $error
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*
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* @param object $controller Instantiating controller
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* @param string $error Error method
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* @return mixed If specified, controller blackHoleCallback's response, or no return otherwise
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* @access public
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* @see SecurityComponent::$blackHoleCallback
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*/
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function blackHole(&$controller, $error = '') {
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$this->Session->del('_Token');
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if ($this->blackHoleCallback == null) {
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$code = 404;
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if ($error == 'login') {
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$code = 401;
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}
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$controller->redirect(null, $code, true);
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} else {
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return $this->__callback($controller, $this->blackHoleCallback, array($error));
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}
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}
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/**
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* Sets the actions that require a $method HTTP request, or empty for all actions
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*
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* @param string $method The HTTP method to assign controller actions to
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* @param array $actions Controller actions to set the required HTTP method to.
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* @access private
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*/
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function __requireMethod($method, $actions = array()) {
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$this->{'require' . $method} = ife(empty($actions), array('*'), $actions);
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}
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/**
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* Check if HTTP methods are required
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*
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* @param object $controller Instantiating controller
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* @return bool true if $method is required
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* @access private
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*/
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function __methodsRequired(&$controller) {
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foreach (array('Post', 'Get', 'Put', 'Delete') as $method) {
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$property = 'require' . $method;
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if (is_array($this->$property) && !empty($this->$property)) {
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$require = array_map('strtolower', $this->$property);
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if (in_array($this->__action, $require) || $this->$property == array('*')) {
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if (!$this->RequestHandler->{'is' . $method}()) {
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if (!$this->blackHole($controller, strtolower($method))) {
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return null;
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}
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}
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}
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}
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}
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return true;
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}
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/**
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* Check if access requires secure connection
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*
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* @param object $controller Instantiating controller
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* @return bool true if secure connection required
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* @access private
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*/
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function __secureRequired(&$controller) {
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if (is_array($this->requireSecure) && !empty($this->requireSecure)) {
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$requireSecure = array_map('strtolower', $this->requireSecure);
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if (in_array($this->__action, $requireSecure) || $this->requireSecure == array('*')) {
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if (!$this->RequestHandler->isSSL()) {
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if (!$this->blackHole($controller, 'secure')) {
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return null;
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}
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}
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}
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}
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return true;
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}
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/**
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* Check if authentication is required
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*
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* @param object $controller Instantiating controller
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* @return bool true if authentication required
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* @access private
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*/
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function __authRequired(&$controller) {
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if (is_array($this->requireAuth) && !empty($this->requireAuth) && !empty($controller->data)) {
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$requireAuth = array_map('strtolower', $this->requireAuth);
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if (in_array($this->__action, $requireAuth) || $this->requireAuth == array('*')) {
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if (!isset($controller->data['__Token'] )) {
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if (!$this->blackHole($controller, 'auth')) {
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return null;
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}
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}
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if ($this->Session->check('_Token')) {
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$tData = unserialize($this->Session->read('_Token'));
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if (!empty($tData['allowedControllers']) && !in_array($controller->params['controller'], $tData['allowedControllers']) || !empty($tData['allowedActions']) && !in_array($controller->params['action'], $tData['allowedActions'])) {
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if (!$this->blackHole($controller, 'auth')) {
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return null;
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}
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}
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} else {
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if (!$this->blackHole($controller, 'auth')) {
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return null;
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}
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}
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}
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}
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return true;
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}
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/**
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* Check if login is required
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*
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* @param object $controller Instantiating controller
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* @return bool true if login is required
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* @access private
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*/
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function __loginRequired(&$controller) {
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if (is_array($this->requireLogin) && !empty($this->requireLogin)) {
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$requireLogin = array_map('strtolower', $this->requireLogin);
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if (in_array($this->__action, $requireLogin) || $this->requireLogin == array('*')) {
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$login = $this->loginCredentials($this->loginOptions['type']);
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if ($login == null) {
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// User hasn't been authenticated yet
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header($this->loginRequest());
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if (!empty($this->loginOptions['prompt'])) {
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$this->__callback($controller, $this->loginOptions['prompt']);
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} else {
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$this->blackHole($controller, 'login');
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}
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} else {
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if (isset($this->loginOptions['login'])) {
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$this->__callback($controller, $this->loginOptions['login'], array($login));
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} else {
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if (strtolower($this->loginOptions['type']) == 'digest') {
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// Do digest authentication
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if ($login && isset($this->loginUsers[$login['username']])) {
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if ($login['response'] == $this->generateDigestResponseHash($login)) {
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return true;
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}
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}
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$this->blackHole($controller, 'login');
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} else {
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if (!(in_array($login['username'], array_keys($this->loginUsers)) && $this->loginUsers[$login['username']] == $login['password'])) {
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$this->blackHole($controller, 'login');
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}
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}
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}
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}
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}
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}
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return true;
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}
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/**
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* Validate submitted form
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*
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* @param object $controller Instantiating controller
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* @return bool true if submitted form is valid
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* @access private
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*/
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function __validatePost(&$controller) {
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if (!empty($controller->data)) {
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if (!isset($controller->data['__Token'])) {
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if (!$this->blackHole($controller, 'auth')) {
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return null;
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}
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}
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$token = $controller->data['__Token']['key'];
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if ($this->Session->check('_Token')) {
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$tData = unserialize($this->Session->read('_Token'));
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if ($tData['expires'] < time() || $tData['key'] !== $token) {
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if (!$this->blackHole($controller, 'auth')) {
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return null;
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}
|
|
}
|
|
}
|
|
|
|
if (!isset($controller->data['__Token']['fields'])) {
|
|
if (!$this->blackHole($controller, 'auth')) {
|
|
return null;
|
|
}
|
|
}
|
|
$form = $controller->data['__Token']['fields'];
|
|
$check = $controller->data;
|
|
unset($check['__Token']['fields']);
|
|
|
|
if (!empty($this->disabledFields)) {
|
|
foreach ($check as $model => $fields) {
|
|
foreach ($fields as $field => $value) {
|
|
$key[] = $model . '.' . $field;
|
|
}
|
|
unset($field);
|
|
}
|
|
|
|
foreach ($this->disabledFields as $value) {
|
|
$parts = preg_split('/\/|\./', $value);
|
|
|
|
if (count($parts) == 1) {
|
|
$key1[] = $controller->modelClass . '.' . $parts['0'];
|
|
} elseif (count($parts) == 2) {
|
|
$key1[] = $parts['0'] . '.' . $parts['1'];
|
|
}
|
|
}
|
|
|
|
foreach ($key1 as $value) {
|
|
if (in_array($value, $key)) {
|
|
$remove = explode('.', $value);
|
|
unset($check[$remove['0']][$remove['1']]);
|
|
} elseif (in_array('_' . $value, $key)) {
|
|
$remove = explode('.', $value);
|
|
$controller->data[$remove['0']][$remove['1']] = $controller->data['_' . $remove['0']][$remove['1']];
|
|
unset($check['_' . $remove['0']][$remove['1']]);
|
|
}
|
|
}
|
|
}
|
|
ksort($check);
|
|
foreach ($check as $key => $value) {
|
|
$merge = array();
|
|
if ($key === '__Token') {
|
|
$field[$key] = $value;
|
|
continue;
|
|
}
|
|
$string = substr($key, 0, 1);
|
|
|
|
if ($string === '_') {
|
|
$newKey = substr($key, 1);
|
|
|
|
if (!isset($controller->data[$newKey])) {
|
|
$controller->data[$newKey] = array();
|
|
|
|
if (array_keys($controller->data[$key]) === array($newKey)) {
|
|
$field[$newKey] = array($newKey);
|
|
}
|
|
}
|
|
|
|
if (is_array($value)) {
|
|
$values = array_values($value);
|
|
$k = array_keys($value);
|
|
$count = count($k);
|
|
|
|
if (is_numeric($k[0])) {
|
|
for ($i = 0; $count > $i; $i++) {
|
|
foreach ($values[$i] as $key2 => $value1) {
|
|
if ($value1 === '0') {
|
|
$field[$newKey][$i] = array_merge($field[$newKey][$i], array($key2));
|
|
}
|
|
}
|
|
}
|
|
$controller->data[$newKey] = Set::pushDiff($controller->data[$key], $controller->data[$newKey]);
|
|
}
|
|
|
|
for ($i = 0; $count > $i; $i++) {
|
|
$field[$key][$k[$i]] = $values[$i];
|
|
}
|
|
|
|
foreach ($k as $lookup) {
|
|
if (isset($controller->data[$newKey][$lookup])) {
|
|
unset($controller->data[$key][$lookup]);
|
|
} elseif ($controller->data[$key][$lookup] === '0') {
|
|
$merge[] = $lookup;
|
|
}
|
|
}
|
|
|
|
if (!is_numeric($k[0])) {
|
|
if (isset($field[$newKey])) {
|
|
$field[$newKey] = array_merge($merge, $field[$newKey]);
|
|
} else {
|
|
$field[$newKey] = $merge;
|
|
}
|
|
$controller->data[$newKey] = Set::pushDiff($controller->data[$key], $controller->data[$newKey]);
|
|
}
|
|
unset($controller->data[$key]);
|
|
}
|
|
continue;
|
|
}
|
|
if (is_array($value)) {
|
|
$keys = array_keys($value);
|
|
} else {
|
|
$keys = $value;
|
|
}
|
|
|
|
if (isset($field[$key])) {
|
|
$field[$key] = array_merge($field[$key], $keys);
|
|
} elseif (is_array($keys) && !empty($keys) && is_numeric($keys[0])) {
|
|
foreach ($value as $fields) {
|
|
$merge[] = array_keys($fields);
|
|
}
|
|
$field[$key] = $merge;
|
|
} else if (is_array($keys)) {
|
|
$field[$key] = $keys;
|
|
} else {
|
|
$field[] = $key;
|
|
}
|
|
}
|
|
|
|
foreach ($field as $key => $value) {
|
|
if(strpos($key, '_') !== 0 && is_array($field[$key])) {
|
|
sort($field[$key]);
|
|
}
|
|
}
|
|
ksort($field, SORT_STRING);
|
|
|
|
$check = urlencode(Security::hash(serialize($field) . Configure::read('Security.salt')));
|
|
if ($form !== $check) {
|
|
if (!$this->blackHole($controller, 'auth')) {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
/**
|
|
* Add authentication key for new form posts
|
|
*
|
|
* @param object $controller Instantiating controller
|
|
* @return bool Success
|
|
* @access private
|
|
*/
|
|
function __generateToken(&$controller) {
|
|
if (!isset($controller->params['requested']) || $controller->params['requested'] != 1) {
|
|
$authKey = Security::generateAuthKey();
|
|
$expires = strtotime('+' . Security::inactiveMins() . ' minutes');
|
|
$token = array(
|
|
'key' => $authKey,
|
|
'expires' => $expires,
|
|
'allowedControllers' => $this->allowedControllers,
|
|
'allowedActions' => $this->allowedActions,
|
|
'disabledFields' => $this->disabledFields
|
|
);
|
|
|
|
if (!isset($controller->data)) {
|
|
$controller->data = array();
|
|
}
|
|
|
|
if ($this->Session->check('_Token')) {
|
|
$tData = unserialize($this->Session->read('_Token'));
|
|
if (isset($tData['expires']) && $tData['expires'] > time() && isset($tData['key'])) {
|
|
$token['key'] = $tData['key'];
|
|
}
|
|
}
|
|
$controller->params['_Token'] = $token;
|
|
$this->Session->write('_Token', serialize($token));
|
|
}
|
|
return true;
|
|
}
|
|
/**
|
|
* Sets the default login options for an HTTP-authenticated request
|
|
*
|
|
* @param array $options Default login options
|
|
* @access private
|
|
*/
|
|
function __setLoginDefaults(&$options) {
|
|
$options = array_merge(array(
|
|
'type' => 'basic',
|
|
'realm' => env('SERVER_NAME'),
|
|
'qop' => 'auth',
|
|
'nonce' => String::uuid()
|
|
), array_filter($options));
|
|
$options = array_merge(array('opaque' => md5($options['realm'])), $options);
|
|
}
|
|
/**
|
|
* Calls a controller callback method
|
|
*
|
|
* @param object $controller Controller to run callback on
|
|
* @param string $method Method to execute
|
|
* @param array $params Parameters to send to method
|
|
* @return mixed Controller callback method's response
|
|
* @access private
|
|
*/
|
|
function __callback(&$controller, $method, $params = array()) {
|
|
if (is_callable(array($controller, $method))) {
|
|
return call_user_func_array(array(&$controller, $method), empty($params) ? null : $params);
|
|
} else {
|
|
// Debug::warning('Callback method ' . $method . ' in controller ' . get_class($controller)
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
?>
|