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<?php
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/* SVN FILE: $Id: dispatcher.php 4409 2007-02-02 13:20:59Z phpnut $ */
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/**
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 * Dispatcher takes the URL information, parses it for paramters and
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 * tells the involved controllers what to do.
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 *
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 * This is the heart of Cake's operation.
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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 2005-2007, 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 2005-2007, 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
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 * @since			CakePHP(tm) v 0.2.9
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 * @version			$Revision: 4409 $
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 * @modifiedby		$LastChangedBy: phpnut $
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 * @lastmodified	$Date: 2007-02-02 07:20:59 -0600 (Fri, 02 Feb 2007) $
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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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 * List of helpers to include
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 */
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	uses('router', DS.'controller'.DS.'controller');
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/**
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 * Dispatcher translates URLs to controller-action-paramter triads.
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 *
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 * Dispatches the request, creating appropriate models and controllers.
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 *
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 * @package		cake
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 * @subpackage	cake.cake
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 */
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class Dispatcher extends Object {
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/**
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 * Base URL
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 * @var string
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 */
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	var $base = false;
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/**
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 * @var string
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 */
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	var $admin = false;
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/**
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 * @var string
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 */
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	var $webservices = null;
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/**
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 * @var string
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 */
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	var $plugin = null;
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/**
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 * Constructor.
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 */
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	function __construct() {
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		parent::__construct();
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	}
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/**
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 * Dispatches and invokes given URL, handing over control to the involved controllers, and then renders the results (if autoRender is set).
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 *
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 * If no controller of given name can be found, invoke() shows error messages in
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 * the form of Missing Controllers information. It does the same with Actions (methods of Controllers are called
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 * Actions).
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 *
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 * @param string $url	URL information to work on.
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 * @param array $additionalParams	Settings array ("bare", "return"),
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 * which is melded with the GET and POST params.
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 * @return boolean		Success
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 */
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	function dispatch($url, $additionalParams=array()) {
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		$params = array_merge($this->parseParams($url), $additionalParams);
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		$missingController = false;
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		$missingAction = false;
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		$missingView = false;
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		$privateAction = false;
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		$this->base = $this->baseUrl();
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		if (empty($params['controller'])) {
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			$missingController = true;
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		} else {
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			$ctrlName = Inflector::camelize($params['controller']);
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			$ctrlClass = $ctrlName.'Controller';
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			if (!loadController($ctrlName)) {
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				$pluginName = Inflector::camelize($params['action']);
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				if (!loadPluginController(Inflector::underscore($ctrlName), $pluginName)) {
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					if(preg_match('/([\\.]+)/', $ctrlName)) {
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						return $this->cakeError('error404', array(
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														array('url' => strtolower($ctrlName),
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																'message' => 'Was not found on this server',
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																'base' => $this->base)));
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					} elseif(!class_exists($ctrlClass)) {
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						$missingController = true;
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					} else {
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						$params['plugin'] = null;
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						$this->plugin = null;
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					}
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				} else {
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					$params['plugin'] = Inflector::underscore($ctrlName);
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				}
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			} else {
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				$params['plugin'] = null;
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				$this->plugin = null;
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			}
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		}
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		if(isset($params['plugin'])){
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			$plugin = $params['plugin'];
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			$pluginName = Inflector::camelize($params['action']);
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			$pluginClass = $pluginName.'Controller';
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			$ctrlClass = $pluginClass;
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			$oldAction = $params['action'];
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			$params = $this->_restructureParams($params);
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			$this->plugin = $plugin;
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			loadPluginModels($plugin);
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			$this->base = $this->base.'/'.Inflector::underscore($ctrlName);
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126
			if(empty($params['controller']) || !class_exists($pluginClass)) {
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				$params['controller'] = Inflector::underscore($ctrlName);
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				$ctrlClass = $ctrlName.'Controller';
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				if (!is_null($params['action'])) {
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					array_unshift($params['pass'], $params['action']);
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				}
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				$params['action'] = $oldAction;
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			}
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		}
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		if(defined('CAKE_ADMIN')) {
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			if(isset($params[CAKE_ADMIN])) {
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				$this->admin = '/'.CAKE_ADMIN ;
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				$url = preg_replace('/'.CAKE_ADMIN.'\//', '', $url);
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				if (empty($params['action'])) {
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					$params['action'] = CAKE_ADMIN.'_'.'index';
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				} else {
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					$params['action'] = CAKE_ADMIN.'_'.$params['action'];
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				}
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			} elseif (strpos($params['action'], CAKE_ADMIN) === 0) {
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					$privateAction = true;
148
			}
149
		}
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151
		if ($missingController) {
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			return $this->cakeError('missingController', array(
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											array('className' => Inflector::camelize($params['controller']."Controller"),
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													'webroot' => $this->webroot,
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													'url' => $url,
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													'base' => $this->base)));
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		} else {
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			$controller =& new $ctrlClass();
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		}
160

    
161
		$classMethods = get_class_methods($controller);
162
		$classVars = get_object_vars($controller);
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164
		if (empty($params['action'])) {
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			$params['action'] = 'index';
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		}
167

    
168
		if((in_array($params['action'], $classMethods) || in_array(strtolower($params['action']), $classMethods)) && strpos($params['action'], '_', 0) === 0) {
169
			$privateAction = true;
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		}
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172
		if(!in_array($params['action'], $classMethods) && !in_array(strtolower($params['action']), $classMethods)) {
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			$missingAction = true;
174
		}
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176
		if (in_array(strtolower($params['action']), array('tostring', 'requestaction', 'log',
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																			'cakeerror', 'constructclasses', 'redirect',
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																			'set', 'setaction', 'validate', 'validateerrors',
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																			'render', 'referer', 'flash', 'flashout',
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																			'generatefieldnames', 'postconditions', 'cleanupfields',
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																			'beforefilter', 'beforerender', 'afterfilter'))) {
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			$missingAction = true;
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		}
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		if(in_array('return', array_keys($params)) && $params['return'] == 1) {
186
			$controller->autoRender = false;
187
		}
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189
		$controller->base = $this->base;
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		$base = strip_plugin($this->base, $this->plugin);
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		if(defined("BASE_URL")){
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			$controller->here = $base . $this->admin . $url;
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		} else {
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			$controller->here = $base . $this->admin . '/' . $url;
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		}
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		$controller->webroot = $this->webroot;
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		$controller->params = $params;
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		$controller->action = $params['action'];
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		if (!empty($controller->params['data'])) {
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			$controller->data =& $controller->params['data'];
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		} else {
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			$controller->data = null;
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		}
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		if (!empty($controller->params['pass'])) {
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			$controller->passed_args =& $controller->params['pass'];
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			$controller->passedArgs =&  $controller->params['pass'];
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		} else {
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			$controller->passed_args = null;
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			$controller->passedArgs = null;
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		}
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		if (!empty($params['bare'])) {
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			$controller->autoLayout = !$params['bare'];
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		} else {
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			$controller->autoLayout = $controller->autoLayout;
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		}
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		$controller->webservices = $params['webservices'];
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		$controller->plugin = $this->plugin;
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223
		if(!is_null($controller->webservices)) {
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			array_push($controller->components, $controller->webservices);
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			array_push($controller->helpers, $controller->webservices);
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			$component =& new Component($controller);
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		}
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		$controller->_initComponents();
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		$controller->constructClasses();
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231
		if ($missingAction && !in_array('scaffold', array_keys($classVars))) {
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			$this->start($controller);
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			return $this->cakeError('missingAction', array(
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											array('className' => Inflector::camelize($params['controller']."Controller"),
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													'action' => $params['action'],
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													'webroot' => $this->webroot,
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													'url' => $url,
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													'base' => $this->base)));
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		}
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241
		if ($privateAction) {
242
			$this->start($controller);
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			return $this->cakeError('privateAction', array(
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											array('className' => Inflector::camelize($params['controller']."Controller"),
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													'action' => $params['action'],
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													'webroot' => $this->webroot,
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													'url' => $url,
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													'base' => $this->base)));
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		}
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		return $this->_invoke($controller, $params, $missingAction);
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	}
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/**
253
 * Invokes given controller's render action if autoRender option is set. Otherwise the contents of the operation are returned as a string.
254
 *
255
 * @param object $controller
256
 * @param array $params
257
 * @param boolean $missingAction
258
 * @return string
259
 */
260
	function _invoke (&$controller, $params, $missingAction = false) {
261
		$this->start($controller);
262
		$classVars = get_object_vars($controller);
263

    
264
		if ($missingAction && in_array('scaffold', array_keys($classVars))) {
265
			uses(DS.'controller'.DS.'scaffold');
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			return new Scaffold($controller, $params);
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		} else {
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			$output = call_user_func_array(array(&$controller, $params['action']), empty($params['pass'])? null: $params['pass']);
269
		}
270
		if ($controller->autoRender) {
271
			$output = $controller->render();
272
		}
273
		$controller->output =& $output;
274
		$controller->afterFilter();
275
		return $controller->output;
276
	}
277
/**
278
 * Starts up a controller
279
 *
280
 * @param object $controller
281
 */
282
	function start(&$controller) {
283
		if (!empty($controller->beforeFilter)) {
284
			if(is_array($controller->beforeFilter)) {
285

    
286
				foreach($controller->beforeFilter as $filter) {
287
					if(is_callable(array($controller,$filter)) && $filter != 'beforeFilter') {
288
						$controller->$filter();
289
					}
290
				}
291
			} else {
292
				if(is_callable(array($controller, $controller->beforeFilter)) && $controller->beforeFilter != 'beforeFilter') {
293
					$controller->{$controller->beforeFilter}();
294
				}
295
			}
296
		}
297
		$controller->beforeFilter();
298

    
299
		foreach($controller->components as $c) {
300
			if (isset($controller->{$c}) && is_object($controller->{$c}) && is_callable(array($controller->{$c}, 'startup'))) {
301
				$controller->{$c}->startup($controller);
302
			}
303
		}
304
	}
305

    
306
/**
307
 * Returns array of GET and POST parameters. GET parameters are taken from given URL.
308
 *
309
 * @param string $from_url	URL to mine for parameter information.
310
 * @return array Parameters found in POST and GET.
311
 */
312
	function parseParams($from_url) {
313
		$Route = new Router();
314
		include CONFIGS.'routes.php';
315
		$params = $Route->parse ($from_url);
316

    
317
		if (ini_get('magic_quotes_gpc') == 1) {
318
			if(!empty($_POST)) {
319
				$params['form'] = stripslashes_deep($_POST);
320
			}
321
		} else {
322
			$params['form'] = $_POST;
323
		}
324

    
325
		if (isset($params['form']['data'])) {
326
			$params['data'] = $params['form']['data'];
327
		}
328

    
329
		if (isset($_GET)) {
330
			if (ini_get('magic_quotes_gpc') == 1) {
331
				$params['url'] = stripslashes_deep($_GET);
332
			} else {
333
				$params['url'] = $_GET;
334
			}
335
		}
336

    
337
		foreach ($_FILES as $name => $data) {
338
			if ($name != 'data') {
339
				$params['form'][$name] = $data;
340
			}
341
		}
342

    
343
		if (isset($_FILES['data'])) {
344
			foreach ($_FILES['data'] as $key => $data) {
345

    
346
				foreach ($data as $model => $fields) {
347

    
348
					foreach ($fields as $field => $value) {
349
						$params['data'][$model][$field][$key] = $value;
350
					}
351
				}
352
			}
353
		}
354
		$params['bare'] = empty($params['ajax'])? (empty($params['bare'])? 0: 1): 1;
355
		$params['webservices'] = empty($params['webservices']) ? null : $params['webservices'];
356
		return $params;
357
	}
358
/**
359
 * Returns a base URL.
360
 *
361
 * @return string	Base URL
362
 */
363
	function baseUrl() {
364
		$htaccess = null;
365
		$base = $this->admin;
366
		$this->webroot = '';
367

    
368
		if (defined('BASE_URL')) {
369
			$base = BASE_URL.$this->admin;
370
		}
371

    
372
		$docRoot = env('DOCUMENT_ROOT');
373
		$scriptName = env('PHP_SELF');
374
		$r = null;
375
		$appDirName = str_replace('/', '\/', preg_quote(APP_DIR));
376
		$webrootDirName = str_replace('/', '\/', preg_quote(WEBROOT_DIR));
377

    
378
		if (preg_match('/'.$appDirName.'\\'.DS.$webrootDirName.'/', $docRoot)) {
379
			$this->webroot = '/';
380

    
381
			if (preg_match('/^(.*)\/index\.php$/', $scriptName, $r)) {
382

    
383
				if(!empty($r[1])) {
384
					return  $base.$r[1];
385
				}
386
			}
387
		} else {
388
			if (defined('BASE_URL')) {
389
				$webroot = setUri();
390
				$htaccess = preg_replace('/(?:'.APP_DIR.'(.*)|index\\.php(.*))/i', '', $webroot).APP_DIR.'/'.$webrootDirName.'/';
391
			}
392

    
393
			if (preg_match('/^(.*)\\/'.$appDirName.'\\/'.$webrootDirName.'\\/index\\.php$/', $scriptName, $regs)) {
394

    
395
				if(APP_DIR === 'app') {
396
					$appDir = null;
397
				} else {
398
					$appDir = '/'.APP_DIR;
399
				}
400
				!empty($htaccess)? $this->webroot = $htaccess : $this->webroot = $regs[1].$appDir.'/';
401
				return  $base.$regs[1].$appDir;
402

    
403
			} elseif (preg_match('/^(.*)\\/'.$webrootDirName.'([^\/i]*)|index\\\.php$/', $scriptName, $regs)) {
404
				!empty($htaccess)? $this->webroot = $htaccess : $this->webroot = $regs[0].'/';
405
				return  $base.$regs[0];
406

    
407
			} else {
408
				!empty($htaccess)? $this->webroot = $htaccess : $this->webroot = '/';
409
				return $base;
410
			}
411
		}
412
		return $base;
413
	}
414
/**
415
 * Enter description here...
416
 *
417
 * @param unknown_type $params
418
 * @return unknown
419
 */
420
	function _restructureParams($params) {
421
		$params['controller'] = $params['action'];
422

    
423
		if(isset($params['pass'][0])) {
424
			$params['action'] = $params['pass'][0];
425
			array_shift($params['pass']);
426
		} else {
427
			$params['action'] = null;
428
		}
429
		return $params;
430
	}
431
}
432
?>
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