mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 11:28:25 +00:00
675 lines
19 KiB
PHP
675 lines
19 KiB
PHP
<?php
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/**
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* Access Control List factory class.
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*
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* Permissions system.
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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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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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake.libs.controller.components
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* @since CakePHP(tm) v 0.10.0.1076
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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App::uses('Component', 'Controller');
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/**
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* Access Control List factory class.
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*
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* Uses a strategy pattern to allow custom ACL implementations to be used with the same component interface.
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* You can define by changing `Configure::write('Acl.classname', 'DbAcl');` in your core.php. Concrete ACL
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* implementations should extend `AclBase` and implement the methods it defines.
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*
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* @package cake.libs.controller.components
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* @link http://book.cakephp.org/view/1242/Access-Control-Lists
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*/
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class AclComponent extends Component {
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/**
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* Instance of an ACL class
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*
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* @var object
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* @access protected
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*/
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protected $_Instance = null;
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/**
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* Aro object.
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*
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* @var string
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*/
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public $Aro;
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/**
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* Aco object
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*
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* @var string
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*/
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public $Aco;
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/**
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* Constructor. Will return an instance of the correct ACL class as defined in `Configure::read('Acl.classname')`
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*
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* @throws CakeException when Acl.classname could not be loaded.
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*/
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public function __construct(ComponentCollection $collection, $settings = array()) {
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parent::__construct($collection, $settings);
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$name = Inflector::camelize(strtolower(Configure::read('Acl.classname')));
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if (!class_exists($name)) {
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if (App::import('Component', $name)) {
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list($plugin, $name) = pluginSplit($name);
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$name .= 'Component';
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} else {
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throw new CakeException(__d('cake_dev', 'Could not find %s.', $name));
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}
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}
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$this->adapter($name);
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}
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/**
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* Sets or gets the Adapter object currently in the AclComponent.
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*
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* `$this->Acl->adapter();` will get the current adapter class while
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* `$this->Acl->adapter($obj);` will set the adapter class
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*
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* Will call the initialize method on the adapter if setting a new one.
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*
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* @param mixed $adapter Instance of AclBase or a string name of the class to use. (optional)
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* @return mixed either null, or instance of AclBase
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* @throws CakeException when the given class is not an AclBase
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*/
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public function adapter($adapter = null) {
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if ($adapter) {
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if (is_string($adapter)) {
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$adapter = new $adapter();
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}
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if (!$adapter instanceof AclInterface) {
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throw new CakeException(__d('cake_dev', 'AclComponent adapters must implement AclInterface'));
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}
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$this->_Instance = $adapter;
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$this->_Instance->initialize($this);
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return;
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}
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return $this->_Instance;
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}
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/**
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* Pass-thru function for ACL check instance. Check methods
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* are used to check whether or not an ARO can access an ACO
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function check($aro, $aco, $action = "*") {
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return $this->_Instance->check($aro, $aco, $action);
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}
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/**
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* Pass-thru function for ACL allow instance. Allow methods
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* are used to grant an ARO access to an ACO.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function allow($aro, $aco, $action = "*") {
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return $this->_Instance->allow($aro, $aco, $action);
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}
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/**
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* Pass-thru function for ACL deny instance. Deny methods
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* are used to remove permission from an ARO to access an ACO.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function deny($aro, $aco, $action = "*") {
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return $this->_Instance->deny($aro, $aco, $action);
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}
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/**
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* Pass-thru function for ACL inherit instance. Inherit methods
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* modify the permission for an ARO to be that of its parent object.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function inherit($aro, $aco, $action = "*") {
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return $this->_Instance->inherit($aro, $aco, $action);
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}
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/**
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* Pass-thru function for ACL grant instance. An alias for AclComponent::allow()
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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* @deprecated
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*/
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public function grant($aro, $aco, $action = "*") {
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trigger_error(__d('cake_dev', 'AclComponent::grant() is deprecated, use allow() instead'), E_USER_WARNING);
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return $this->_Instance->allow($aro, $aco, $action);
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}
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/**
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* Pass-thru function for ACL grant instance. An alias for AclComponent::deny()
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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* @deprecated
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*/
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public function revoke($aro, $aco, $action = "*") {
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trigger_error(__d('cake_dev', 'AclComponent::revoke() is deprecated, use deny() instead'), E_USER_WARNING);
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return $this->_Instance->deny($aro, $aco, $action);
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}
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}
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/**
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* Access Control List interface.
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* Implementing classes are used by AclComponent to perform ACL checks in Cake.
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*
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* @package cake.libs.controller.components
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*/
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interface AclInterface {
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/**
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* Empty method to be overridden in subclasses
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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*/
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public function check($aro, $aco, $action = "*");
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/**
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* Allow methods are used to grant an ARO access to an ACO.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function allow($aro, $aco, $action = "*");
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/**
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* Deny methods are used to remove permission from an ARO to access an ACO.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function deny($aro, $aco, $action = "*");
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/**
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* Inherit methods modify the permission for an ARO to be that of its parent object.
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success
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*/
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public function inherit($aro, $aco, $action = "*");
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/**
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* Initialization method for the Acl implementation
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*
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* @param AclComponent $component
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*/
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public function initialize($component);
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}
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/**
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* DbAcl implements an ACL control system in the database. ARO's and ACO's are
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* structured into trees and a linking table is used to define permissions. You
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* can install the schema for DbAcl with the Schema Shell.
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*
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* `$aco` and `$aro` parameters can be slash delimited paths to tree nodes.
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*
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* eg. `controllers/Users/edit`
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*
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* Would point to a tree structure like
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*
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* {{{
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* controllers
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* Users
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* edit
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* }}}
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*
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* @package cake.libs.model
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*/
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class DbAcl extends Object implements AclInterface {
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/**
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* Constructor
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*
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*/
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function __construct() {
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parent::__construct();
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App::uses('AclNode', 'Model');
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$this->Aro = ClassRegistry::init(array('class' => 'Aro', 'alias' => 'Aro'));
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$this->Aco = ClassRegistry::init(array('class' => 'Aco', 'alias' => 'Aco'));
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}
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/**
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* Initializes the containing component and sets the Aro/Aco objects to it.
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*
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* @param AclComponent $component
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* @return void
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*/
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public function initialize($component) {
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$component->Aro = $this->Aro;
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$component->Aco = $this->Aco;
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}
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/**
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* Checks if the given $aro has access to action $action in $aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $action Action (defaults to *)
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* @return boolean Success (true if ARO has access to action in ACO, false otherwise)
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* @link http://book.cakephp.org/view/1249/Checking-Permissions-The-ACL-Component
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*/
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public function check($aro, $aco, $action = "*") {
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if ($aro == null || $aco == null) {
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return false;
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}
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$permKeys = $this->_getAcoKeys($this->Aro->Permission->schema());
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$aroPath = $this->Aro->node($aro);
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$acoPath = $this->Aco->node($aco);
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if (empty($aroPath) || empty($acoPath)) {
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trigger_error(__d('cake_dev', "DbAcl::check() - Failed ARO/ACO node lookup in permissions check. Node references:\nAro: ") . print_r($aro, true) . "\nAco: " . print_r($aco, true), E_USER_WARNING);
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return false;
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}
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if ($acoPath == null || $acoPath == array()) {
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trigger_error(__d('cake_dev', "DbAcl::check() - Failed ACO node lookup in permissions check. Node references:\nAro: ") . print_r($aro, true) . "\nAco: " . print_r($aco, true), E_USER_WARNING);
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return false;
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}
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if ($action != '*' && !in_array('_' . $action, $permKeys)) {
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trigger_error(__d('cake_dev', "ACO permissions key %s does not exist in DbAcl::check()", $action), E_USER_NOTICE);
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return false;
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}
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$inherited = array();
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$acoIDs = Set::extract($acoPath, '{n}.' . $this->Aco->alias . '.id');
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$count = count($aroPath);
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for ($i = 0 ; $i < $count; $i++) {
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$permAlias = $this->Aro->Permission->alias;
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$perms = $this->Aro->Permission->find('all', array(
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'conditions' => array(
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"{$permAlias}.aro_id" => $aroPath[$i][$this->Aro->alias]['id'],
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"{$permAlias}.aco_id" => $acoIDs
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),
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'order' => array($this->Aco->alias . '.lft' => 'desc'),
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'recursive' => 0
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));
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if (empty($perms)) {
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continue;
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} else {
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$perms = Set::extract($perms, '{n}.' . $this->Aro->Permission->alias);
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foreach ($perms as $perm) {
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if ($action == '*') {
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foreach ($permKeys as $key) {
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if (!empty($perm)) {
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if ($perm[$key] == -1) {
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return false;
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} elseif ($perm[$key] == 1) {
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$inherited[$key] = 1;
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}
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}
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}
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if (count($inherited) === count($permKeys)) {
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return true;
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}
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} else {
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switch ($perm['_' . $action]) {
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case -1:
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return false;
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case 0:
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continue;
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break;
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case 1:
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return true;
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break;
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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 false;
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}
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/**
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* Allow $aro to have access to action $actions in $aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $actions Action (defaults to *)
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* @param integer $value Value to indicate access type (1 to give access, -1 to deny, 0 to inherit)
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* @return boolean Success
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* @link http://book.cakephp.org/view/1248/Assigning-Permissions
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*/
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public function allow($aro, $aco, $actions = "*", $value = 1) {
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$perms = $this->getAclLink($aro, $aco);
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$permKeys = $this->_getAcoKeys($this->Aro->Permission->schema());
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$save = array();
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if ($perms == false) {
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trigger_error(__d('cake_dev', 'DbAcl::allow() - Invalid node'), E_USER_WARNING);
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return false;
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}
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if (isset($perms[0])) {
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$save = $perms[0][$this->Aro->Permission->alias];
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}
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if ($actions == "*") {
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$permKeys = $this->_getAcoKeys($this->Aro->Permission->schema());
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$save = array_combine($permKeys, array_pad(array(), count($permKeys), $value));
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} else {
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if (!is_array($actions)) {
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$actions = array('_' . $actions);
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}
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if (is_array($actions)) {
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foreach ($actions as $action) {
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if ($action{0} != '_') {
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$action = '_' . $action;
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}
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if (in_array($action, $permKeys)) {
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$save[$action] = $value;
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}
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}
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}
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}
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list($save['aro_id'], $save['aco_id']) = array($perms['aro'], $perms['aco']);
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if ($perms['link'] != null && !empty($perms['link'])) {
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$save['id'] = $perms['link'][0][$this->Aro->Permission->alias]['id'];
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} else {
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unset($save['id']);
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$this->Aro->Permission->id = null;
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}
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return ($this->Aro->Permission->save($save) !== false);
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}
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/**
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* Deny access for $aro to action $action in $aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $actions Action (defaults to *)
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* @return boolean Success
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* @link http://book.cakephp.org/view/1248/Assigning-Permissions
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*/
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public function deny($aro, $aco, $action = "*") {
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return $this->allow($aro, $aco, $action, -1);
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}
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/**
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* Let access for $aro to action $action in $aco be inherited
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $actions Action (defaults to *)
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* @return boolean Success
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*/
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public function inherit($aro, $aco, $action = "*") {
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return $this->allow($aro, $aco, $action, 0);
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}
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/**
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* Allow $aro to have access to action $actions in $aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $actions Action (defaults to *)
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* @return boolean Success
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* @see allow()
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*/
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public function grant($aro, $aco, $action = "*") {
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return $this->allow($aro, $aco, $action);
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}
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/**
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* Deny access for $aro to action $action in $aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @param string $actions Action (defaults to *)
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* @return boolean Success
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* @see deny()
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*/
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public function revoke($aro, $aco, $action = "*") {
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return $this->deny($aro, $aco, $action);
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}
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/**
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* Get an array of access-control links between the given Aro and Aco
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*
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* @param string $aro ARO The requesting object identifier.
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* @param string $aco ACO The controlled object identifier.
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* @return array Indexed array with: 'aro', 'aco' and 'link'
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*/
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public function getAclLink($aro, $aco) {
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$obj = array();
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$obj['Aro'] = $this->Aro->node($aro);
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$obj['Aco'] = $this->Aco->node($aco);
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if (empty($obj['Aro']) || empty($obj['Aco'])) {
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return false;
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}
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return array(
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'aro' => Set::extract($obj, 'Aro.0.'.$this->Aro->alias.'.id'),
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'aco' => Set::extract($obj, 'Aco.0.'.$this->Aco->alias.'.id'),
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'link' => $this->Aro->Permission->find('all', array('conditions' => array(
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$this->Aro->Permission->alias . '.aro_id' => Set::extract($obj, 'Aro.0.'.$this->Aro->alias.'.id'),
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$this->Aro->Permission->alias . '.aco_id' => Set::extract($obj, 'Aco.0.'.$this->Aco->alias.'.id')
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)))
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);
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}
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/**
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* Get the keys used in an ACO
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*
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* @param array $keys Permission model info
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* @return array ACO keys
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*/
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protected function _getAcoKeys($keys) {
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$newKeys = array();
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$keys = array_keys($keys);
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foreach ($keys as $key) {
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if (!in_array($key, array('id', 'aro_id', 'aco_id'))) {
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$newKeys[] = $key;
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}
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|
}
|
|
return $newKeys;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* IniAcl implements an access control system using an INI file. An example
|
|
* of the ini file used can be found in /config/acl.ini.php.
|
|
*
|
|
* @package cake.libs.model.iniacl
|
|
*/
|
|
class IniAcl extends Object implements AclInterface {
|
|
|
|
/**
|
|
* Array with configuration, parsed from ini file
|
|
*
|
|
* @var array
|
|
* @access public
|
|
*/
|
|
public $config = null;
|
|
|
|
/**
|
|
* The Set::classicExtract() path to the user/aro identifier in the
|
|
* acl.ini file. This path will be used to extract the string
|
|
* representation of a user used in the ini file.
|
|
*
|
|
* @var string
|
|
*/
|
|
public $userPath = 'User.username';
|
|
|
|
/**
|
|
* Initialize method
|
|
*
|
|
* @param AclBase $component
|
|
* @return void
|
|
*/
|
|
public function initialize($component) {
|
|
|
|
}
|
|
|
|
/**
|
|
* No op method, allow cannot be done with IniAcl
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return boolean Success
|
|
*/
|
|
public function allow($aro, $aco, $action = "*") {
|
|
|
|
}
|
|
|
|
/**
|
|
* No op method, deny cannot be done with IniAcl
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return boolean Success
|
|
*/
|
|
public function deny($aro, $aco, $action = "*") {
|
|
|
|
}
|
|
|
|
/**
|
|
* No op method, inherit cannot be done with IniAcl
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return boolean Success
|
|
*/
|
|
public function inherit($aro, $aco, $action = "*") {
|
|
|
|
}
|
|
|
|
/**
|
|
* Main ACL check function. Checks to see if the ARO (access request object) has access to the
|
|
* ACO (access control object).Looks at the acl.ini.php file for permissions
|
|
* (see instructions in /config/acl.ini.php).
|
|
*
|
|
* @param string $aro ARO
|
|
* @param string $aco ACO
|
|
* @param string $aco_action Action
|
|
* @return boolean Success
|
|
*/
|
|
public function check($aro, $aco, $aco_action = null) {
|
|
if ($this->config == null) {
|
|
$this->config = $this->readConfigFile(CONFIGS . 'acl.ini.php');
|
|
}
|
|
$aclConfig = $this->config;
|
|
|
|
if (is_array($aro)) {
|
|
$aro = Set::classicExtract($aro, $this->userPath);
|
|
}
|
|
|
|
if (isset($aclConfig[$aro]['deny'])) {
|
|
$userDenies = $this->arrayTrim(explode(",", $aclConfig[$aro]['deny']));
|
|
|
|
if (array_search($aco, $userDenies)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (isset($aclConfig[$aro]['allow'])) {
|
|
$userAllows = $this->arrayTrim(explode(",", $aclConfig[$aro]['allow']));
|
|
|
|
if (array_search($aco, $userAllows)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (isset($aclConfig[$aro]['groups'])) {
|
|
$userGroups = $this->arrayTrim(explode(",", $aclConfig[$aro]['groups']));
|
|
|
|
foreach ($userGroups as $group) {
|
|
if (array_key_exists($group, $aclConfig)) {
|
|
if (isset($aclConfig[$group]['deny'])) {
|
|
$groupDenies = $this->arrayTrim(explode(",", $aclConfig[$group]['deny']));
|
|
|
|
if (array_search($aco, $groupDenies)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (isset($aclConfig[$group]['allow'])) {
|
|
$groupAllows = $this->arrayTrim(explode(",", $aclConfig[$group]['allow']));
|
|
|
|
if (array_search($aco, $groupAllows)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Parses an INI file and returns an array that reflects the INI file's section structure. Double-quote friendly.
|
|
*
|
|
* @param string $filename File
|
|
* @return array INI section structure
|
|
*/
|
|
public function readConfigFile($filename) {
|
|
App::uses('IniReader', 'Configure');
|
|
$iniFile = new IniReader(dirname($filename) . DS);
|
|
return $iniFile->read(basename($filename));
|
|
}
|
|
|
|
/**
|
|
* Removes trailing spaces on all array elements (to prepare for searching)
|
|
*
|
|
* @param array $array Array to trim
|
|
* @return array Trimmed array
|
|
*/
|
|
public function arrayTrim($array) {
|
|
foreach ($array as $key => $value) {
|
|
$array[$key] = trim($value);
|
|
}
|
|
array_unshift($array, "");
|
|
return $array;
|
|
}
|
|
}
|