mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
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680 lines
20 KiB
PHP
680 lines
20 KiB
PHP
<?php
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/**
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* Request object for handling alternative HTTP requests
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*
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* Alternative HTTP requests can come from wireless units like mobile phones, palmtop computers,
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* and the like. These units have no use for Ajax requests, and this Component can tell how Cake
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* should respond to the different needs of a handheld computer and a desktop machine.
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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
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* @subpackage cake.cake.libs.controller.components
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* @since CakePHP(tm) v 0.10.4.1076
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* Request object for handling HTTP requests
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*
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* @package cake
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* @subpackage cake.cake.libs.controller.components
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* @link http://book.cakephp.org/view/1291/Request-Handling
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*
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*/
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class RequestHandlerComponent extends Object {
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/**
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* The layout that will be switched to for Ajax requests
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*
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* @var string
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* @access public
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* @see RequestHandler::setAjax()
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*/
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public $ajaxLayout = 'ajax';
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/**
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* Determines whether or not callbacks will be fired on this component
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*
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* @var boolean
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* @access public
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*/
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public $enabled = true;
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/**
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* Holds the content-type of the response that is set when using
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* RequestHandler::respondAs()
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*
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* @var string
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* @access private
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*/
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private $__responseTypeSet = null;
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/**
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* Holds the copy of Controller::$request
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*
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* @var CakeRequest
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* @access public
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*/
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public $request;
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/**
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* Friendly content-type mappings used to set response types and determine
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* request types. Can be modified with RequestHandler::setContent()
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*
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* @var array
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* @access private
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* @see RequestHandlerComponent::setContent
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*/
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protected $_contentTypeMap = array(
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'javascript' => 'text/javascript',
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'js' => 'text/javascript',
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'json' => 'application/json',
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'css' => 'text/css',
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'html' => array('text/html', '*/*'),
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'text' => 'text/plain',
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'txt' => 'text/plain',
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'csv' => array('application/vnd.ms-excel', 'text/plain'),
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'form' => 'application/x-www-form-urlencoded',
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'file' => 'multipart/form-data',
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'xhtml' => array('application/xhtml+xml', 'application/xhtml', 'text/xhtml'),
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'xhtml-mobile' => 'application/vnd.wap.xhtml+xml',
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'xml' => array('application/xml', 'text/xml'),
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'rss' => 'application/rss+xml',
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'atom' => 'application/atom+xml',
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'amf' => 'application/x-amf',
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'wap' => array(
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'text/vnd.wap.wml',
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'text/vnd.wap.wmlscript',
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'image/vnd.wap.wbmp'
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),
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'wml' => 'text/vnd.wap.wml',
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'wmlscript' => 'text/vnd.wap.wmlscript',
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'wbmp' => 'image/vnd.wap.wbmp',
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'pdf' => 'application/pdf',
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'zip' => 'application/x-zip',
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'tar' => 'application/x-tar'
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);
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/**
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* The template to use when rendering the given content type.
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*
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* @var string
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* @access private
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*/
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private $__renderType = null;
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/**
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* Contains the file extension parsed out by the Router
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*
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* @var string
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* @access public
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* @see Router::parseExtensions()
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*/
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public $ext = null;
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/**
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* Initializes the component, gets a reference to Controller::$parameters, and
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* checks to see if a file extension has been parsed by the Router. Or if the
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* HTTP_ACCEPT_TYPE is set to a single value that is a supported extension and mapped type.
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* If yes, RequestHandler::$ext is set to that value
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*
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* @param object $controller A reference to the controller
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* @param array $settings Array of settings to _set().
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* @return void
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* @see Router::parseExtensions()
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*/
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public function initialize(&$controller, $settings = array()) {
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$this->request = $controller->request;
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if (isset($controller->params['url']['ext'])) {
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$this->ext = $controller->params['url']['ext'];
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}
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if (empty($this->ext)) {
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$accepts = $this->request->accepts();
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$extensions = Router::extensions();
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if (count($accepts) == 1) {
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$mapped = $this->mapType($accepts[0]);
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if (in_array($mapped, $extensions)) {
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$this->ext = $mapped;
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}
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}
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}
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$this->_set($settings);
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}
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/**
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* The startup method of the RequestHandler enables several automatic behaviors
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* related to the detection of certain properties of the HTTP request, including:
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*
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* - Disabling layout rendering for Ajax requests (based on the HTTP_X_REQUESTED_WITH header)
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* - If Router::parseExtensions() is enabled, the layout and template type are
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* switched based on the parsed extension or Accept-Type header. For example, if `controller/action.xml`
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* is requested, the view path becomes `app/views/controller/xml/action.ctp`. Also if
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* `controller/action` is requested with `Accept-Type: application/xml` in the headers
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* the view path will become `app/views/controller/xml/action.ctp`.
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* - If a helper with the same name as the extension exists, it is added to the controller.
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* - If the extension is of a type that RequestHandler understands, it will set that
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* Content-type in the response header.
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* - If the XML data is POSTed, the data is parsed into an XML object, which is assigned
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* to the $data property of the controller, which can then be saved to a model object.
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*
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* @param object $controller A reference to the controller
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* @return void
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*/
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public function startup(&$controller) {
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$controller->request->params['isAjax'] = $this->request->is('ajax');
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$isRecognized = (
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!in_array($this->ext, array('html', 'htm')) &&
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in_array($this->ext, array_keys($this->_contentTypeMap))
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);
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if (!empty($this->ext) && $isRecognized) {
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$this->renderAs($controller, $this->ext);
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} elseif ($this->request->is('ajax')) {
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$this->renderAs($controller, 'ajax');
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}
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if ($this->requestedWith('xml')) {
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if (!class_exists('XmlNode')) {
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App::import('Core', 'Xml');
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}
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$xml = new Xml(trim(file_get_contents('php://input')));
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if (count($xml->children) == 1 && is_object($dataNode = $xml->child('data'))) {
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$controller->data = $dataNode->toArray();
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} else {
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$controller->data = $xml->toArray();
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}
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}
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}
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/**
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* Handles (fakes) redirects for Ajax requests using requestAction()
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*
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* @param object $controller A reference to the controller
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* @param mixed $url A string or array containing the redirect location
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* @param mixed HTTP Status for redirect
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*/
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public function beforeRedirect(&$controller, $url, $status = null) {
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if (!$this->request->is('ajax')) {
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return;
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}
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foreach ($_POST as $key => $val) {
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unset($_POST[$key]);
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}
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if (is_array($url)) {
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$url = Router::url($url + array('base' => false));
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}
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if (!empty($status)) {
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$statusCode = $controller->httpCodes($status);
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$code = key($statusCode);
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$msg = $statusCode[$code];
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$controller->header("HTTP/1.1 {$code} {$msg}");
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}
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echo $this->requestAction($url, array('return', 'bare' => false));
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$this->_stop();
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}
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/**
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* Returns true if the current HTTP request is Ajax, false otherwise
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*
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* @return boolean True if call is Ajax
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*/
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public function isAjax() {
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return $this->request->is('ajax');
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}
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/**
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* Returns true if the current HTTP request is coming from a Flash-based client
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*
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* @return boolean True if call is from Flash
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*/
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public function isFlash() {
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return $this->request->is('flash');
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}
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/**
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* Returns true if the current request is over HTTPS, false otherwise.
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*
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* @return bool True if call is over HTTPS
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*/
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public function isSSL() {
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return $this->request->is('ssl');
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}
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/**
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* Returns true if the current call accepts an XML response, false otherwise
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*
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* @return boolean True if client accepts an XML response
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*/
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public function isXml() {
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return $this->prefers('xml');
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}
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/**
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* Returns true if the current call accepts an RSS response, false otherwise
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*
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* @return boolean True if client accepts an RSS response
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*/
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public function isRss() {
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return $this->prefers('rss');
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}
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/**
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* Returns true if the current call accepts an Atom response, false otherwise
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*
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* @return boolean True if client accepts an RSS response
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*/
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public function isAtom() {
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return $this->prefers('atom');
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}
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/**
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* Returns true if user agent string matches a mobile web browser, or if the
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* client accepts WAP content.
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*
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* @return boolean True if user agent is a mobile web browser
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*/
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function isMobile() {
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return $this->request->is('mobile') || $this->accepts('wap');
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}
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/**
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* Returns true if the client accepts WAP content
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*
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* @return bool
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*/
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public function isWap() {
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return $this->prefers('wap');
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}
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/**
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* Returns true if the current call a POST request
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*
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* @return boolean True if call is a POST
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* @deprecated Use $this->request->is('post'); from your controller.
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*/
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public function isPost() {
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return $this->request->is('post');
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}
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/**
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* Returns true if the current call a PUT request
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*
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* @return boolean True if call is a PUT
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* @deprecated Use $this->request->is('put'); from your controller.
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*/
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public function isPut() {
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return $this->request->is('put');
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}
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/**
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* Returns true if the current call a GET request
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*
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* @return boolean True if call is a GET
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* @deprecated Use $this->request->is('get'); from your controller.
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*/
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public function isGet() {
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return $this->request->is('get');
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}
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/**
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* Returns true if the current call a DELETE request
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*
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* @return boolean True if call is a DELETE
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* @deprecated Use $this->request->is('delete'); from your controller.
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*/
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public function isDelete() {
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return $this->request->is('delete');
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}
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/**
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* Gets Prototype version if call is Ajax, otherwise empty string.
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* The Prototype library sets a special "Prototype version" HTTP header.
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*
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* @return string Prototype version of component making Ajax call
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*/
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public function getAjaxVersion() {
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if (env('HTTP_X_PROTOTYPE_VERSION') != null) {
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return env('HTTP_X_PROTOTYPE_VERSION');
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}
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return false;
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}
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/**
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* Adds/sets the Content-type(s) for the given name. This method allows
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* content-types to be mapped to friendly aliases (or extensions), which allows
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* RequestHandler to automatically respond to requests of that type in the
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* startup method.
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*
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* @param string $name The name of the Content-type, i.e. "html", "xml", "css"
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* @param mixed $type The Content-type or array of Content-types assigned to the name,
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* i.e. "text/html", or "application/xml"
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* @return void
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*/
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public function setContent($name, $type = null) {
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$this->_contentTypeMap[$name] = $type;
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}
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/**
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* Gets the server name from which this request was referred
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*
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* @return string Server address
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* @deprecated use $this->request->referer() from your controller instead
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*/
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public function getReferer() {
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return $this->request->referer(false);
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}
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/**
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* Gets remote client IP
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*
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* @return string Client IP address
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* @deprecated use $this->request->clientIp() from your controller instead.
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*/
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public function getClientIP($safe = true) {
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return $this->request->clientIp($safe);
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}
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/**
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* Determines which content types the client accepts. Acceptance is based on
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* the file extension parsed by the Router (if present), and by the HTTP_ACCEPT
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* header. Unlike CakeRequest::accepts() this method deals entirely with mapped content types.
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*
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* Usage:
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*
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* `$this->RequestHandler->accepts(array('xml', 'html', 'json'));`
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*
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* Returns true if the client accepts any of the supplied types.
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*
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* `$this->RequestHandler->accepts('xml');`
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*
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* Returns true if the client accepts xml.
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*
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* @param mixed $type Can be null (or no parameter), a string type name, or an
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* array of types
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* @return mixed If null or no parameter is passed, returns an array of content
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* types the client accepts. If a string is passed, returns true
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* if the client accepts it. If an array is passed, returns true
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* if the client accepts one or more elements in the array.
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* @access public
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* @see RequestHandlerComponent::setContent()
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*/
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function accepts($type = null) {
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$accepted = $this->request->accepts();
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if ($type == null) {
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return $this->mapType($accepted);
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} elseif (is_array($type)) {
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foreach ($type as $t) {
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$t = $this->mapAlias($t);
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if (in_array($t, $accepted)) {
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return true;
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}
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}
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return false;
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} elseif (is_string($type)) {
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$type = $this->mapAlias($type);
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return in_array($type, $accepted);
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}
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return false;
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}
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/**
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* Determines the content type of the data the client has sent (i.e. in a POST request)
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*
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* @param mixed $type Can be null (or no parameter), a string type name, or an array of types
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* @return mixed If a single type is supplied a boolean will be returned. If no type is provided
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* The mapped value of CONTENT_TYPE will be returned. If an array is supplied the first type
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* in the request content type will be returned.
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*/
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public function requestedWith($type = null) {
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if (!$this->request->is('post') && !$this->request->is('put')) {
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return null;
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}
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list($contentType) = explode(';', env('CONTENT_TYPE'));
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if ($type == null) {
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return $this->mapType($contentType);
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} elseif (is_array($type)) {
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foreach ($type as $t) {
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if ($this->requestedWith($t)) {
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return $t;
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}
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}
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return false;
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} elseif (is_string($type)) {
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return ($type == $this->mapType($contentType));
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}
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}
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/**
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* Determines which content-types the client prefers. If no parameters are given,
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* the content-type that the client most likely prefers is returned. If $type is
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* an array, the first item in the array that the client accepts is returned.
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* Preference is determined primarily by the file extension parsed by the Router
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* if provided, and secondarily by the list of content-types provided in
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* HTTP_ACCEPT.
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*
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* @param mixed $type An optional array of 'friendly' content-type names, i.e.
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* 'html', 'xml', 'js', etc.
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* @return mixed If $type is null or not provided, the first content-type in the
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* list, based on preference, is returned.
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* @access public
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* @see RequestHandlerComponent::setContent()
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*/
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function prefers($type = null) {
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$accepts = $this->accepts();
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if ($type == null) {
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if (empty($this->ext)) {
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if (is_array($accepts)) {
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return $accepts[0];
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}
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return $accepts;
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}
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return $this->ext;
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}
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$types = (array)$type;
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if (count($types) === 1) {
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if (!empty($this->ext)) {
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return ($types[0] == $this->ext);
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}
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return ($types[0] == $accepts[0]);
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}
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$intersect = array_values(array_intersect($accepts, $types));
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if (empty($intersect)) {
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return false;
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}
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return $intersect[0];
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}
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/**
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* Sets the layout and template paths for the content type defined by $type.
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*
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* @param object $controller A reference to a controller object
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* @param string $type Type of response to send (e.g: 'ajax')
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* @return void
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* @access public
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* @see RequestHandlerComponent::setContent()
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* @see RequestHandlerComponent::respondAs()
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*/
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function renderAs(&$controller, $type) {
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$options = array('charset' => 'UTF-8');
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if (Configure::read('App.encoding') !== null) {
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$options = array('charset' => Configure::read('App.encoding'));
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}
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if ($type == 'ajax') {
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$controller->layout = $this->ajaxLayout;
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return $this->respondAs('html', $options);
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}
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$controller->ext = '.ctp';
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if (empty($this->__renderType)) {
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$controller->viewPath .= DS . $type;
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} else {
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$remove = preg_replace("/([\/\\\\]{$this->__renderType})$/", DS . $type, $controller->viewPath);
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$controller->viewPath = $remove;
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}
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$this->__renderType = $type;
|
|
$controller->layoutPath = $type;
|
|
|
|
if (isset($this->_contentTypeMap[$type])) {
|
|
$this->respondAs($type, $options);
|
|
}
|
|
|
|
$helper = ucfirst($type);
|
|
$isAdded = (
|
|
in_array($helper, $controller->helpers) ||
|
|
array_key_exists($helper, $controller->helpers)
|
|
);
|
|
|
|
if (!$isAdded) {
|
|
if (App::import('Helper', $helper)) {
|
|
$controller->helpers[] = $helper;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the response header based on type map index name. If DEBUG is greater than 2, the header
|
|
* is not set.
|
|
*
|
|
* @param mixed $type Friendly type name, i.e. 'html' or 'xml', or a full content-type,
|
|
* like 'application/x-shockwave'.
|
|
* @param array $options If $type is a friendly type name that is associated with
|
|
* more than one type of content, $index is used to select which content-type to use.
|
|
* @return boolean Returns false if the friendly type name given in $type does
|
|
* not exist in the type map, or if the Content-type header has
|
|
* already been set by this method.
|
|
* @access public
|
|
* @see RequestHandlerComponent::setContent()
|
|
*/
|
|
function respondAs($type, $options = array()) {
|
|
if (!array_key_exists($type, $this->_contentTypeMap) && strpos($type, '/') === false) {
|
|
return false;
|
|
}
|
|
$defaults = array('index' => 0, 'charset' => null, 'attachment' => false);
|
|
$options = array_merge($defaults, $options);
|
|
|
|
if (strpos($type, '/') === false && isset($this->_contentTypeMap[$type])) {
|
|
$cType = null;
|
|
if (is_array($this->_contentTypeMap[$type]) && isset($this->_contentTypeMap[$type][$options['index']])) {
|
|
$cType = $this->_contentTypeMap[$type][$options['index']];
|
|
} elseif (is_array($this->_contentTypeMap[$type]) && isset($this->_contentTypeMap[$type][0])) {
|
|
$cType = $this->_contentTypeMap[$type][0];
|
|
} elseif (isset($this->_contentTypeMap[$type])) {
|
|
$cType = $this->_contentTypeMap[$type];
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
if (is_array($cType)) {
|
|
if ($this->prefers($cType)) {
|
|
$cType = $this->prefers($cType);
|
|
} else {
|
|
$cType = $cType[0];
|
|
}
|
|
}
|
|
} else {
|
|
$cType = $type;
|
|
}
|
|
|
|
if ($cType != null) {
|
|
$header = 'Content-type: ' . $cType;
|
|
|
|
if (!empty($options['charset'])) {
|
|
$header .= '; charset=' . $options['charset'];
|
|
}
|
|
if (!empty($options['attachment'])) {
|
|
$this->_header("Content-Disposition: attachment; filename=\"{$options['attachment']}\"");
|
|
}
|
|
if (Configure::read('debug') < 2 && !defined('CAKEPHP_SHELL')) {
|
|
$this->_header($header);
|
|
}
|
|
$this->__responseTypeSet = $cType;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Wrapper for header() so calls can be easily tested.
|
|
*
|
|
* @param string $header The header to be sent.
|
|
* @return void
|
|
*/
|
|
protected function _header($header) {
|
|
header($header);
|
|
}
|
|
|
|
/**
|
|
* Returns the current response type (Content-type header), or null if none has been set
|
|
*
|
|
* @return mixed A string content type alias, or raw content type if no alias map exists,
|
|
* otherwise null
|
|
*/
|
|
public function responseType() {
|
|
if ($this->__responseTypeSet == null) {
|
|
return null;
|
|
}
|
|
return $this->mapType($this->__responseTypeSet);
|
|
}
|
|
|
|
/**
|
|
* Maps a content-type back to an alias
|
|
*
|
|
* @param mixed $type Either a string content type to map, or an array of types.
|
|
* @return mixed Aliases for the types provided.
|
|
*/
|
|
public function mapType($ctype) {
|
|
if (is_array($ctype)) {
|
|
return array_map(array($this, 'mapType'), $ctype);
|
|
}
|
|
$keys = array_keys($this->_contentTypeMap);
|
|
$count = count($keys);
|
|
|
|
foreach ($this->_contentTypeMap as $alias => $types) {
|
|
if (is_array($types) && in_array($ctype, $types)) {
|
|
return $alias;
|
|
} elseif (is_string($types) && $types == $ctype) {
|
|
return $alias;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Maps a content type alias back to its mime-type(s)
|
|
*
|
|
* @param mixed $alias String alias to convert back into a content type. Or an array of aliases to map.
|
|
* @return mixed Null on an undefined alias. String value of the mapped alias type. If an
|
|
* alias maps to more than one content type, the first one will be returned.
|
|
*/
|
|
public function mapAlias($alias) {
|
|
if (is_array($alias)) {
|
|
return array_map(array($this, 'mapAlias'), $alias);
|
|
}
|
|
if (isset($this->_contentTypeMap[$alias])) {
|
|
$types = $this->_contentTypeMap[$alias];
|
|
if (is_array($types)) {
|
|
return $types[0];
|
|
}
|
|
return $types;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
}
|