cakephp2-php8/lib/Cake/Routing/Dispatcher.php
mark_story 32b48ecc7c Fix issue with missing base on redirect route.
The request data wasn't set in Router when redirect routes are processed.
This caused the base to become missing. This causes issues with applications
running in a subdirectory.
2011-10-22 18:48:31 -04:00

331 lines
10 KiB
PHP

<?php
/**
* Dispatcher takes the URL information, parses it for parameters and
* tells the involved controllers what to do.
*
* This is the heart of Cake's operation.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Routing
* @since CakePHP(tm) v 0.2.9
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* List of helpers to include
*/
App::uses('Router', 'Routing');
App::uses('CakeRequest', 'Network');
App::uses('CakeResponse', 'Network');
App::uses('Controller', 'Controller');
App::uses('Scaffold', 'Controller');
App::uses('View', 'View');
App::uses('Debugger', 'Utility');
/**
* Dispatcher converts Requests into controller actions. It uses the dispatched Request
* to locate and load the correct controller. If found, the requested action is called on
* the controller.
*
* @package Cake.Routing
*/
class Dispatcher {
/**
* Constructor.
*
* @param string $base The base directory for the application. Writes `App.base` to Configure.
*/
public function __construct($base = false) {
if ($base !== false) {
Configure::write('App.base', $base);
}
}
/**
* Dispatches and invokes given Request, handing over control to the involved controller. If the controller is set
* to autoRender, via Controller::$autoRender, then Dispatcher will render the view.
*
* Actions in CakePHP can be any public method on a controller, that is not declared in Controller. If you
* want controller methods to be public and in-accesible by URL, then prefix them with a `_`.
* For example `public function _loadPosts() { }` would not be accessible via URL. Private and protected methods
* are also not accessible via URL.
*
* If no controller of given name can be found, invoke() will throw an exception.
* If the controller is found, and the action is not found an exception will be thrown.
*
* @param CakeRequest $request Request object to dispatch.
* @param CakeResponse $response Response object to put the results of the dispatch into.
* @param array $additionalParams Settings array ("bare", "return") which is melded with the GET and POST params
* @return boolean Success
* @throws MissingControllerException, MissingActionException, PrivateActionException if any of those error states
* are encountered.
*/
public function dispatch(CakeRequest $request, CakeResponse $response, $additionalParams = array()) {
if ($this->asset($request->url, $response) || $this->cached($request->here)) {
return;
}
Router::setRequestInfo($request);
$request = $this->parseParams($request, $additionalParams);
$controller = $this->_getController($request, $response);
if (!($controller instanceof Controller)) {
throw new MissingControllerException(array(
'class' => Inflector::camelize($request->params['controller']) . 'Controller',
'plugin' => empty($request->params['plugin']) ? null : Inflector::camelize($request->params['plugin'])
));
}
return $this->_invoke($controller, $request, $response);
}
/**
* Initializes the components and models a controller will be using.
* Triggers the controller action, and invokes the rendering if Controller::$autoRender is true and echo's the output.
* Otherwise the return value of the controller action are returned.
*
* @param Controller $controller Controller to invoke
* @param CakeRequest $request The request object to invoke the controller for.
* @param CakeResponse $response The response object to receive the output
* @return void
*/
protected function _invoke(Controller $controller, CakeRequest $request, CakeResponse $response) {
$controller->constructClasses();
$controller->startupProcess();
$render = true;
$result = $controller->invokeAction($request);
if ($result instanceof CakeResponse) {
$render = false;
$response = $result;
}
if ($render && $controller->autoRender) {
$response = $controller->render();
} elseif ($response->body() === null) {
$response->body($result);
}
$controller->shutdownProcess();
if (isset($request->params['return'])) {
return $response->body();
}
$response->send();
}
/**
* Applies Routing and additionalParameters to the request to be dispatched.
* If Routes have not been loaded they will be loaded, and app/Config/routes.php will be run.
*
* @param CakeRequest $request CakeRequest object to mine for parameter information.
* @param array $additionalParams An array of additional parameters to set to the request.
* Useful when Object::requestAction() is involved
* @return CakeRequest The request object with routing params set.
*/
public function parseParams(CakeRequest $request, $additionalParams = array()) {
if (count(Router::$routes) == 0) {
$namedExpressions = Router::getNamedExpressions();
extract($namedExpressions);
$this->_loadRoutes();
}
$params = Router::parse($request->url);
$request->addParams($params);
if (!empty($additionalParams)) {
$request->addParams($additionalParams);
}
return $request;
}
/**
* Get controller to use, either plugin controller or application controller
*
* @param CakeRequest $request Request object
* @param CakeResponse $response Response for the controller.
* @return mixed name of controller if not loaded, or object if loaded
*/
protected function _getController($request, $response) {
$ctrlClass = $this->_loadController($request);
if (!$ctrlClass) {
return false;
}
$reflection = new ReflectionClass($ctrlClass);
if ($reflection->isAbstract() || $reflection->isInterface()) {
return false;
}
return $reflection->newInstance($request, $response);
}
/**
* Load controller and return controller classname
*
* @param CakeRequest $request
* @return string|bool Name of controller class name
*/
protected function _loadController($request) {
$pluginName = $pluginPath = $controller = null;
if (!empty($request->params['plugin'])) {
$pluginName = $controller = Inflector::camelize($request->params['plugin']);
$pluginPath = $pluginName . '.';
}
if (!empty($request->params['controller'])) {
$controller = Inflector::camelize($request->params['controller']);
}
if ($pluginPath . $controller) {
$class = $controller . 'Controller';
App::uses('AppController', 'Controller');
App::uses($pluginName . 'AppController', $pluginPath . 'Controller');
App::uses($class, $pluginPath . 'Controller');
if (class_exists($class)) {
return $class;
}
}
return false;
}
/**
* Loads route configuration
*
* @return void
*/
protected function _loadRoutes() {
include APP . 'Config' . DS . 'routes.php';
}
/**
* Outputs cached dispatch view cache
*
* @param string $path Requested URL path
* @return string|boolean False if is not cached or output
*/
public function cached($path) {
if (Configure::read('Cache.check') === true) {
if ($path == '/') {
$path = 'home';
}
$path = strtolower(Inflector::slug($path));
$filename = CACHE . 'views' . DS . $path . '.php';
if (!file_exists($filename)) {
$filename = CACHE . 'views' . DS . $path . '_index.php';
}
if (file_exists($filename)) {
App::uses('ThemeView', 'View');
$controller = null;
$view = new ThemeView($controller);
return $view->renderCache($filename, microtime(true));
}
}
return false;
}
/**
* Checks if a requested asset exists and sends it to the browser
*
* @param string $url Requested URL
* @param CakeResponse $response The response object to put the file contents in.
* @return boolean True on success if the asset file was found and sent
*/
public function asset($url, CakeResponse $response) {
if (strpos($url, '..') !== false || strpos($url, '.') === false) {
return false;
}
$filters = Configure::read('Asset.filter');
$isCss = (
strpos($url, 'ccss/') === 0 ||
preg_match('#^(theme/([^/]+)/ccss/)|(([^/]+)(?<!css)/ccss)/#i', $url)
);
$isJs = (
strpos($url, 'cjs/') === 0 ||
preg_match('#^/((theme/[^/]+)/cjs/)|(([^/]+)(?<!js)/cjs)/#i', $url)
);
if (($isCss && empty($filters['css'])) || ($isJs && empty($filters['js']))) {
$response->statusCode(404);
$response->send();
return true;
} elseif ($isCss) {
include WWW_ROOT . DS . $filters['css'];
return true;
} elseif ($isJs) {
include WWW_ROOT . DS . $filters['js'];
return true;
}
$pathSegments = explode('.', $url);
$ext = array_pop($pathSegments);
$parts = explode('/', $url);
$assetFile = null;
if ($parts[0] === 'theme') {
$themeName = $parts[1];
unset($parts[0], $parts[1]);
$fileFragment = implode(DS, $parts);
$path = App::themePath($themeName) . 'webroot' . DS;
if (file_exists($path . $fileFragment)) {
$assetFile = $path . $fileFragment;
}
} else {
$plugin = Inflector::camelize($parts[0]);
if (CakePlugin::loaded($plugin)) {
unset($parts[0]);
$fileFragment = implode(DS, $parts);
$pluginWebroot = CakePlugin::path($plugin) . 'webroot' . DS;
if (file_exists($pluginWebroot . $fileFragment)) {
$assetFile = $pluginWebroot . $fileFragment;
}
}
}
if ($assetFile !== null) {
$this->_deliverAsset($response, $assetFile, $ext);
return true;
}
return false;
}
/**
* Sends an asset file to the client
*
* @param CakeResponse $response The response object to use.
* @param string $assetFile Path to the asset file in the file system
* @param string $ext The extension of the file to determine its mime type
* @return void
*/
protected function _deliverAsset(CakeResponse $response, $assetFile, $ext) {
ob_start();
$compressionEnabled = Configure::read('Asset.compress') && $response->compress();
if ($response->type($ext) == $ext) {
$contentType = 'application/octet-stream';
$agent = env('HTTP_USER_AGENT');
if (preg_match('%Opera(/| )([0-9].[0-9]{1,2})%', $agent) || preg_match('/MSIE ([0-9].[0-9]{1,2})/', $agent)) {
$contentType = 'application/octetstream';
}
$response->type($contentType);
}
$response->cache(filemtime($assetFile));
$response->send();
ob_clean();
if ($ext === 'css' || $ext === 'js') {
include($assetFile);
} else {
readfile($assetFile);
}
if ($compressionEnabled) {
ob_end_flush();
}
}
}