db_acl.php

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<?php
/* SVN FILE: $Id: db_acl.php 7980 2009-01-14 17:43:46Z gwoo $ */
/**
 * This is core configuration file.
 *
 * Use it to configure core behaviour ofCake.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs.model
 * @since         CakePHP(tm) v 0.2.9
 * @version       $Revision: 7980 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2009-01-14 12:43:46 -0500 (Wed, 14 Jan 2009) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Load Model and AppModel
 */
App::import('Model', 'App');
/**
 * Short description for file.
 *
 * Long description for file
 *
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model
 */
class AclNode extends AppModel {
/**
 * Explicitly disable in-memory query caching for ACL models
 *
 * @var boolean
 * @access public
 */
    var $cacheQueries = false;
/**
 * ACL models use the Tree behavior
 *
 * @var array
 * @access public
 */
    var $actsAs = array('Tree' => 'nested');
/**
 * Constructor
 *
 */
    function __construct() {
        $config = Configure::read('Acl.database');
        if (isset($config)) {
            $this->useDbConfig = $config;
        }
        parent::__construct();
    }
/**
 * Retrieves the Aro/Aco node for this model
 *
 * @param mixed $ref Array with 'model' and 'foreign_key', model object, or string value
 * @return array Node found in database
 * @access public
 */
    function node($ref = null) {
        $db =& ConnectionManager::getDataSource($this->useDbConfig);
        $type = $this->alias;
        $result = null;

        if (!empty($this->useTable)) {
            $table = $this->useTable;
        } else {
            $table = Inflector::pluralize(Inflector::underscore($type));
        }

        if (empty($ref)) {
            return null;
        } elseif (is_string($ref)) {
            $path = explode('/', $ref);
            $start = $path[0];
            unset($path[0]);

            $queryData = array(
                'conditions' => array(
                    $db->name("{$type}.lft") . ' <= ' . $db->name("{$type}0.lft"),
                    $db->name("{$type}.rght") . ' >= ' . $db->name("{$type}0.rght")),
                'fields' => array('id', 'parent_id', 'model', 'foreign_key', 'alias'),
                'joins' => array(array(
                    'table' => $db->fullTableName($this),
                    'alias' => "{$type}0",
                    'type' => 'LEFT',
                    'conditions' => array("{$type}0.alias" => $start)
                )),
                'order' => $db->name("{$type}.lft") . ' DESC'
            );

            foreach ($path as $i => $alias) {
                $j = $i - 1;

                $queryData['joins'][] = array(
                    'table' => $db->fullTableName($this),
                    'alias' => "{$type}{$i}",
                    'type'  => 'LEFT',
                    'conditions' => array(
                        $db->name("{$type}{$i}.lft") . ' > ' . $db->name("{$type}{$j}.lft"),
                        $db->name("{$type}{$i}.rght") . ' < ' . $db->name("{$type}{$j}.rght"),
                        $db->name("{$type}{$i}.alias") . ' = ' . $db->value($alias, 'string')
                    )
                );

                $queryData['conditions'] = array('or' => array(
                    $db->name("{$type}.lft") . ' <= ' . $db->name("{$type}0.lft") . ' AND ' . $db->name("{$type}.rght") . ' >= ' . $db->name("{$type}0.rght"),
                    $db->name("{$type}.lft") . ' <= ' . $db->name("{$type}{$i}.lft") . ' AND ' . $db->name("{$type}.rght") . ' >= ' . $db->name("{$type}{$i}.rght"))
                );
            }
            $result = $db->read($this, $queryData, -1);
            $path = array_values($path);

            if (
                !isset($result[0][$type]) ||
                (!empty($path) && $result[0][$type]['alias'] != $path[count($path) - 1]) ||
                (empty($path) && $result[0][$type]['alias'] != $start)
            ) {
                return false;
            }
        } elseif (is_object($ref) && is_a($ref, 'Model')) {
            $ref = array('model' => $ref->alias, 'foreign_key' => $ref->id);
        } elseif (is_array($ref) && !(isset($ref['model']) && isset($ref['foreign_key']))) {
            $name = key($ref);

            if (PHP5) {
                $model = ClassRegistry::init(array('class' => $name, 'alias' => $name));
            } else {
                $model =& ClassRegistry::init(array('class' => $name, 'alias' => $name));
            }

            if (empty($model)) {
                trigger_error("Model class '$name' not found in AclNode::node() when trying to bind {$this->alias} object", E_USER_WARNING);
                return null;
            }

            $tmpRef = null;
            if (method_exists($model, 'bindNode')) {
                $tmpRef = $model->bindNode($ref);
            }
            if (empty($tmpRef)) {
                $ref = array('model' => $name, 'foreign_key' => $ref[$name][$model->primaryKey]);
            } else {
                if (is_string($tmpRef)) {
                    return $this->node($tmpRef);
                }
                $ref = $tmpRef;
            }
        }
        if (is_array($ref)) {
            if (is_array(current($ref)) && is_string(key($ref))) {
                $name = key($ref);
                $ref = current($ref);
            }
            foreach ($ref as $key => $val) {
                if (strpos($key, $type) !== 0 && strpos($key, '.') === false) {
                    unset($ref[$key]);
                    $ref["{$type}0.{$key}"] = $val;
                }
            }
            $queryData = array(
                'conditions' => $ref,
                'fields' => array('id', 'parent_id', 'model', 'foreign_key', 'alias'),
                'joins' => array(array(
                    'table' => $db->fullTableName($this),
                    'alias' => "{$type}0",
                    'type' => 'LEFT',
                    'conditions' => array(
                        $db->name("{$type}.lft") . ' <= ' . $db->name("{$type}0.lft"),
                        $db->name("{$type}.rght") . ' >= ' . $db->name("{$type}0.rght")
                    )
                )),
                'order' => $db->name("{$type}.lft") . ' DESC'
            );
            $result = $db->read($this, $queryData, -1);

            if (!$result) {
                trigger_error("AclNode::node() - Couldn't find {$type} node identified by \"" . print_r($ref, true) . "\"", E_USER_WARNING);
            }
        }
        return $result;
    }
}
/**
 * Access Control Object
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model
 */
class Aco extends AclNode {
/**
 * Model name
 *
 * @var string
 * @access public
 */
    var $name = 'Aco';
/**
 * Binds to ARO nodes through permissions settings
 *
 * @var array
 * @access public
 */
    var $hasAndBelongsToMany = array('Aro' => array('with' => 'Permission'));
}
/**
 * Action for Access Control Object
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model
 */
class AcoAction extends AppModel {
/**
 * Model name
 *
 * @var string
 * @access public
 */
    var $name = 'AcoAction';
/**
 * ACO Actions belong to ACOs
 *
 * @var array
 * @access public
 */
    var $belongsTo = array('Aco');
}
/**
 * Access Request Object
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model
 */
class Aro extends AclNode {
/**
 * Model name
 *
 * @var string
 * @access public
 */
    var $name = 'Aro';
/**
 * AROs are linked to ACOs by means of Permission
 *
 * @var array
 * @access public
 */
    var $hasAndBelongsToMany = array('Aco' => array('with' => 'Permission'));
}
/**
 * Permissions linking AROs with ACOs
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model
 */
class Permission extends AppModel {
/**
 * Model name
 *
 * @var string
 * @access public
 */
    var $name = 'Permission';
/**
 * Explicitly disable in-memory query caching
 *
 * @var boolean
 * @access public
 */
    var $cacheQueries = false;
/**
 * Override default table name
 *
 * @var string
 * @access public
 */
    var $useTable = 'aros_acos';
/**
 * Permissions link AROs with ACOs
 *
 * @var array
 * @access public
 */
    var $belongsTo = array('Aro', 'Aco');
/**
 * No behaviors for this model
 *
 * @var array
 * @access public
 */
    var $actsAs = null;
/**
 * Constructor, used to tell this model to use the
 * database configured for ACL
 */
    function __construct() {
        $config = Configure::read('Acl.database');
        if (!empty($config)) {
            $this->useDbConfig = $config;
        }
        parent::__construct();
    }
}
?>

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