/** * @version $Id: application.php 22244 2011-10-16 15:50:00Z dextercowley $ * @package Joomla.Framework * @subpackage Application * @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved. * @license GNU/GPL, see LICENSE.php * Joomla! is free software. This version may have been modified pursuant * to the GNU General Public License, and as distributed it includes or * is derivative of works licensed under the GNU General Public License or * other free or open source software licenses. * See COPYRIGHT.php for copyright notices and details. */ // Check to ensure this file is within the rest of the framework defined('JPATH_BASE') or die(); jimport('joomla.event.dispatcher'); /** * Base class for a Joomla! application. * * Acts as a Factory class for application specific objects and provides many * supporting API functions. Derived clases should supply the route(), dispatch() * and render() functions. * * @abstract * @package Joomla.Framework * @subpackage Application * @since 1.5 */ class JApplication extends JObject { /** * The client identifier. * * @var integer * @access protected * @since 1.5 */ var $_clientId = null; /** * The application message queue. * * @var array * @access protected */ var $_messageQueue = array(); /** * The name of the application * * @var array * @access protected */ var $_name = null; /** * The scope of the application * * @var string * @access public */ var $scope = null; /** * Class constructor. * * @param integer A client identifier. */ function __construct($config = array()) { jimport('joomla.utilities.utility'); //set the view name $this->_name = $this->getName(); $this->_clientId = $config['clientId']; //Enable sessions by default if(!isset($config['session'])) { $config['session'] = true; } //Set the session default name if(!isset($config['session_name'])) { $config['session_name'] = $this->_name; } //Set the default configuration file if(!isset($config['config_file'])) { $config['config_file'] = 'configuration.php'; } //create the configuration object $this->_createConfiguration(JPATH_CONFIGURATION.DS.$config['config_file']); //create the session if a session name is passed if($config['session'] !== false) { $this->_createSession(JUtility::getHash($config['session_name'])); } $this->set( 'requestTime', gmdate('Y-m-d H:i') ); } /** * Returns a reference to the global JApplication object, only creating it if it * doesn't already exist. * * This method must be invoked as: *
  $menu = &JApplication::getInstance();
* * @access public * @param mixed $id A client identifier or name. * @param array $config An optional associative array of configuration settings. * @return JApplication The appliction object. * @since 1.5 */ function &getInstance($client, $config = array(), $prefix = 'J') { static $instances; if (!isset( $instances )) { $instances = array(); } if (empty($instances[$client])) { //Load the router object jimport('joomla.application.helper'); $info =& JApplicationHelper::getClientInfo($client, true); $path = $info->path.DS.'includes'.DS.'application.php'; if(file_exists($path)) { require_once $path; // Create a JRouter object $classname = $prefix.ucfirst($client); $instance = new $classname($config); } else { $error = JError::raiseError(500, 'Unable to load application: '.$client); return $error; } $instances[$client] =& $instance; } return $instances[$client]; } /** * Initialise the application. * * @param array An optional associative array of configuration settings. * @access public */ function initialise($options = array()) { jimport('joomla.plugin.helper'); //Set the language in the class $config =& JFactory::getConfig(); // Check that we were given a language in the array (since by default may be blank) if(isset($options['language'])) { $config->setValue('config.language', $options['language']); } // Set user specific editor $user =& JFactory::getUser(); $editor = $user->getParam('editor', $this->getCfg('editor')); $editor = JPluginHelper::isEnabled('editors', $editor) ? $editor : $this->getCfg('editor'); $config->setValue('config.editor', $editor); } /** * Route the application. * * Routing is the process of examining the request environment to determine which * component should receive the request. The component optional parameters * are then set in the request object to be processed when the application is being * dispatched. * * @abstract * @access public */ function route() { // get the full request URI $uri = clone(JURI::getInstance()); $router =& $this->getRouter(); $result = $router->parse($uri); JRequest::set($result, 'get', false ); } /** * Dispatch the applicaiton. * * Dispatching is the process of pulling the option from the request object and * mapping them to a component. If the component does not exist, it handles * determining a default component to dispatch. * * @abstract * @access public */ function dispatch($component) { $document =& JFactory::getDocument(); $document->setTitle( $this->getCfg('sitename' ). ' - ' .JText::_( 'Administration' )); $document->setDescription( $this->getCfg('MetaDesc') ); $contents = JComponentHelper::renderComponent($component); $document->setBuffer($contents, 'component'); } /** * Render the application. * * Rendering is the process of pushing the document buffers into the template * placeholders, retrieving data from the document and pushing it into * the JResponse buffer. * * @abstract * @access public */ function render() { $params = array( 'template' => $this->getTemplate(), 'file' => 'index.php', 'directory' => JPATH_THEMES ); $document =& JFactory::getDocument(); $data = $document->render($this->getCfg('caching'), $params ); JResponse::setBody($data); } /** * Exit the application. * * @access public * @param int Exit code */ function close( $code = 0 ) { exit($code); } /** * Redirect to another URL. * * Optionally enqueues a message in the system message queue (which will be displayed * the next time a page is loaded) using the enqueueMessage method. If the headers have * not been sent the redirect will be accomplished using a "301 Moved Permanently" or "303 See Other" * code in the header pointing to the new location depending upon the moved flag. If the headers * have already been sent this will be accomplished using a JavaScript statement. * * @access public * @param string $url The URL to redirect to. Can only be http/https URL * @param string $msg An optional message to display on redirect. * @param string $msgType An optional message type. * @param boolean True if the page is 301 Permanently Moved, otherwise 303 See Other is assumed. * @return none; calls exit(). * @since 1.5 * @see JApplication::enqueueMessage() */ function redirect( $url, $msg='', $msgType='message', $moved = false ) { // check for relative internal links if (preg_match( '#^index[2]?.php#', $url )) { $url = JURI::base() . $url; } // Strip out any line breaks $url = preg_split("/[\r\n]/", $url); $url = $url[0]; // If we don't start with a http we need to fix this before we proceed // We could validly start with something else (e.g. ftp), though this would // be unlikely and isn't supported by this API if (!preg_match( '#^http#i', $url )) { $uri =& JURI::getInstance(); $prefix = $uri->toString(Array('scheme', 'user', 'pass', 'host', 'port')); if ($url[0] == '/') { // we just need the prefix since we have a path relative to the root $url = $prefix . $url; } else { // its relative to where we are now, so lets add that $parts = explode('/', $uri->toString(Array('path'))); array_pop($parts); $path = implode('/',$parts).'/'; $url = $prefix . $path . $url; } } // If the message exists, enqueue it if (trim( $msg )) { $this->enqueueMessage($msg, $msgType); } // Persist messages if they exist if (count($this->_messageQueue)) { $session =& JFactory::getSession(); $session->set('application.queue', $this->_messageQueue); } // If the headers have been sent, then we cannot send an additional location header // so we will output a javascript redirect statement. if (headers_sent()) { echo "\n"; } else { if (!$moved && strstr(strtolower($_SERVER['HTTP_USER_AGENT']), 'webkit') !== false) { // WebKit browser - Do not use 303, as it causes subresources reload (https://bugs.webkit.org/show_bug.cgi?id=38690) echo ''; } else { // All other browsers, use the more efficient HTTP header method header($moved ? 'HTTP/1.1 301 Moved Permanently' : 'HTTP/1.1 303 See other'); header('Location: '.$url); } } $this->close(); } /** * Enqueue a system message. * * @access public * @param string $msg The message to enqueue. * @param string $type The message type. * @return void * @since 1.5 */ function enqueueMessage( $msg, $type = 'message' ) { // For empty queue, if messages exists in the session, enqueue them first if (!count($this->_messageQueue)) { $session =& JFactory::getSession(); $sessionQueue = $session->get('application.queue'); if (count($sessionQueue)) { $this->_messageQueue = $sessionQueue; $session->set('application.queue', null); } } // Enqueue the message $this->_messageQueue[] = array('message' => $msg, 'type' => strtolower($type)); } /** * Get the system message queue. * * @access public * @return The system message queue. * @since 1.5 */ function getMessageQueue() { // For empty queue, if messages exists in the session, enqueue them if (!count($this->_messageQueue)) { $session =& JFactory::getSession(); $sessionQueue = $session->get('application.queue'); if (count($sessionQueue)) { $this->_messageQueue = $sessionQueue; $session->set('application.queue', null); } } return $this->_messageQueue; } /** * Gets a configuration value. * * @access public * @param string The name of the value to get. * @return mixed The user state. * @example application/japplication-getcfg.php Getting a configuration value */ function getCfg( $varname ) { $config =& JFactory::getConfig(); return $config->getValue('config.' . $varname); } /** * Method to get the application name * * The dispatcher name by default parsed using the classname, or it can be set * by passing a $config['name'] in the class constructor * * @access public * @return string The name of the dispatcher * @since 1.5 */ function getName() { $name = $this->_name; if (empty( $name )) { $r = null; if ( !preg_match( '/J(.*)/i', get_class( $this ), $r ) ) { JError::raiseError(500, "JApplication::getName() : Can\'t get or parse class name."); } $name = strtolower( $r[1] ); } return $name; } /** * Gets a user state. * * @access public * @param string The path of the state. * @return mixed The user state. */ function getUserState( $key ) { $session =& JFactory::getSession(); $registry =& $session->get('registry'); if(!is_null($registry)) { return $registry->getValue($key); } return null; } /** * Sets the value of a user state variable. * * @access public * @param string The path of the state. * @param string The value of the variable. * @return mixed The previous state, if one existed. */ function setUserState( $key, $value ) { $session =& JFactory::getSession(); $registry =& $session->get('registry'); if(!is_null($registry)) { return $registry->setValue($key, $value); } return null; } /** * Gets the value of a user state variable. * * @access public * @param string The key of the user state variable. * @param string The name of the variable passed in a request. * @param string The default value for the variable if not found. Optional. * @param string Filter for the variable, for valid values see {@link JFilterInput::clean()}. Optional. * @return The request user state. */ function getUserStateFromRequest( $key, $request, $default = null, $type = 'none' ) { $old_state = $this->getUserState( $key ); $cur_state = (!is_null($old_state)) ? $old_state : $default; $new_state = JRequest::getVar($request, null, 'default', $type); // Save the new value only if it was set in this request if ($new_state !== null) { $this->setUserState($key, $new_state); } else { $new_state = $cur_state; } return $new_state; } /** * Registers a handler to a particular event group. * * @static * @param string The event name. * @param mixed The handler, a function or an instance of a event object. * @return void * @since 1.5 */ function registerEvent($event, $handler) { $dispatcher =& JDispatcher::getInstance(); $dispatcher->register($event, $handler); } /** * Calls all handlers associated with an event group. * * @static * @param string The event name. * @param array An array of arguments. * @return array An array of results from each function call. * @since 1.5 */ function triggerEvent($event, $args=null) { $dispatcher =& JDispatcher::getInstance(); return $dispatcher->trigger($event, $args); } /** * Login authentication function. * * Username and encoded password are passed the the onLoginUser event which * is responsible for the user validation. A successful validation updates * the current session record with the users details. * * Username and encoded password are sent as credentials (along with other * possibilities) to each observer (authentication plugin) for user * validation. Successful validation will update the current session with * the user details. * * @param array Array( 'username' => string, 'password' => string ) * @param array Array( 'remember' => boolean ) * @return boolean True on success. * @access public * @since 1.5 */ function login($credentials, $options = array()) { // Get the global JAuthentication object jimport( 'joomla.user.authentication'); $authenticate = & JAuthentication::getInstance(); $response = $authenticate->authenticate($credentials, $options); if ($response->status === JAUTHENTICATE_STATUS_SUCCESS) { $session = &JFactory::getSession(); // we fork the session to prevent session fixation issues $session->fork(); $this->_createSession($session->getId()); // Import the user plugin group JPluginHelper::importPlugin('user'); // OK, the credentials are authenticated. Lets fire the onLogin event $results = $this->triggerEvent('onLoginUser', array((array)$response, $options)); /* * If any of the user plugins did not successfully complete the login routine * then the whole method fails. * * Any errors raised should be done in the plugin as this provides the ability * to provide much more information about why the routine may have failed. */ if (!in_array(false, $results, true)) { // Set the remember me cookie if enabled if (isset($options['remember']) && $options['remember']) { jimport('joomla.utilities.simplecrypt'); jimport('joomla.utilities.utility'); // Create the encryption key, apply extra hardening using the user agent string $agent = @$_SERVER['HTTP_USER_AGENT']; // Ignore empty and crackish user agents if ($agent != '' && $agent != 'JLOGIN_REMEMBER') { $key = JUtility::getHash($agent); $crypt = new JSimpleCrypt($key); $rcookie = $crypt->encrypt(serialize($credentials)); $lifetime = time() + 365*24*60*60; setcookie(JUtility::getHash('JLOGIN_REMEMBER'), $rcookie, $lifetime, '/'); } } return true; } } // Trigger onLoginFailure Event $this->triggerEvent('onLoginFailure', array((array)$response)); // If silent is set, just return false if (isset($options['silent']) && $options['silent']) { return false; } // Return the error return JError::raiseWarning('SOME_ERROR_CODE', JText::_('E_LOGIN_AUTHENTICATE')); } /** * Logout authentication function. * * Passed the current user information to the onLogoutUser event and reverts the current * session record back to 'anonymous' parameters. * * @param int $userid The user to load - Can be an integer or string - If string, it is converted to ID automatically * @param array $options Array( 'clientid' => array of client id's ) * * @access public */ function logout($userid = null, $options = array()) { // Initialize variables $retval = false; // Get a user object from the JApplication $user = &JFactory::getUser($userid); // Build the credentials array $parameters['username'] = $user->get('username'); $parameters['id'] = $user->get('id'); // Set clientid in the options array if it hasn't been set already if(empty($options['clientid'])) { $options['clientid'][] = $this->getClientId(); } // Import the user plugin group JPluginHelper::importPlugin('user'); // OK, the credentials are built. Lets fire the onLogout event $results = $this->triggerEvent('onLogoutUser', array($parameters, $options)); /* * If any of the authentication plugins did not successfully complete * the logout routine then the whole method fails. Any errors raised * should be done in the plugin as this provides the ability to provide * much more information about why the routine may have failed. */ if (!in_array(false, $results, true)) { setcookie( JUtility::getHash('JLOGIN_REMEMBER'), false, time() - 86400, '/' ); return true; } // Trigger onLoginFailure Event $this->triggerEvent('onLogoutFailure', array($parameters)); return false; } /** * Gets the name of the current template. * * @return string */ function getTemplate() { return 'system'; } /** * Return a reference to the application JRouter object. * * @access public * @param array $options An optional associative array of configuration settings. * @return JRouter. * @since 1.5 */ function &getRouter($name = null, $options = array()) { if(!isset($name)) { $name = $this->_name; } jimport( 'joomla.application.router' ); $router =& JRouter::getInstance($name, $options); if (JError::isError($router)) { $null = null; return $null; } return $router; } /** * Return a reference to the application JPathway object. * * @access public * @param array $options An optional associative array of configuration settings. * @return object JPathway. * @since 1.5 */ function &getPathway($name = null, $options = array()) { if(!isset($name)) { $name = $this->_name; } jimport( 'joomla.application.pathway' ); $pathway =& JPathway::getInstance($name, $options); if (JError::isError($pathway)) { $null = null; return $null; } return $pathway; } /** * Return a reference to the application JPathway object. * * @access public * @param array $options An optional associative array of configuration settings. * @return object JMenu. * @since 1.5 */ function &getMenu($name = null, $options = array()) { if(!isset($name)) { $name = $this->_name; } jimport( 'joomla.application.menu' ); $menu =& JMenu::getInstance($name, $options); if (JError::isError($menu)) { $null = null; return $null; } return $menu; } /** * Create the configuration registry * * @access private * @param string $file The path to the configuration file * return JConfig */ function &_createConfiguration($file) { jimport( 'joomla.registry.registry' ); require_once( $file ); // Create the JConfig object $config = new JConfig(); // Get the global configuration object $registry =& JFactory::getConfig(); // Load the configuration values into the registry $registry->loadObject($config); return $config; } /** * Create the user session. * * Old sessions are flushed based on the configuration value for the cookie * lifetime. If an existing session, then the last access time is updated. * If a new session, a session id is generated and a record is created in * the #__sessions table. * * @access private * @param string The sessions name. * @return object JSession on success. May call exit() on database error. * @since 1.5 */ function &_createSession( $name ) { $options = array(); $options['name'] = $name; switch($this->_clientId) { case 0: if($this->getCfg('force_ssl') == 2) { $options['force_ssl'] = true; } break; case 1: if($this->getCfg('force_ssl') >= 1) { $options['force_ssl'] = true; } break; } $session =& JFactory::getSession($options); jimport('joomla.database.table'); $storage = & JTable::getInstance('session'); $storage->purge($session->getExpire()); // Session exists and is not expired, update time in session table if ($storage->load($session->getId())) { $storage->update(); return $session; } //Session doesn't exist yet, initalise and store it in the session table $session->set('registry', new JRegistry('session')); $session->set('user', new JUser()); if (!$storage->insert( $session->getId(), $this->getClientId())) { jexit( $storage->getError()); } return $session; } /** * Gets the client id of the current running application. * * @access public * @return int A client identifier. * @since 1.5 */ function getClientId( ) { return $this->_clientId; } /** * Is admin interface? * * @access public * @return boolean True if this application is administrator. * @since 1.0.2 */ function isAdmin() { return ($this->_clientId == 1); } /** * Is site interface? * * @access public * @return boolean True if this application is site. * @since 1.5 */ function isSite() { return ($this->_clientId == 0); } /** * Deprecated functions */ /** * Deprecated, use JPathWay->addItem() method instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JPathWay::addItem() */ function appendPathWay( $name, $link = null ) { /* * To provide backward compatability if no second parameter is set * set it to null */ if ($link == null) { $link = ''; } $pathway =& $this->getPathway(); if( defined( '_JLEGACY' ) && $link == '' ) { $matches = array(); $links = preg_match_all ( '/]+href="([^"]*)"[^>]*>([^<]*)<\/a>/ui', $name, $matches, PREG_SET_ORDER ); foreach( $matches AS $match) { // Add each item to the pathway object if( !$pathway->addItem( $match[2], $match[1] ) ) { return false; } } return true; } else { // Add item to the pathway object if ($pathway->addItem($name, $link)) { return true; } } return false; } /** * Deprecated, use JPathway->getPathWayNames() method instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JPathWay::getPathWayNames() */ function getCustomPathWay() { $pathway = $this->getPathway(); return $pathway->getPathWayNames(); } /** * Deprecated, use JDocument->get( 'head' ) instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JDocument * @see JObject::get() */ function getHead() { $document=& JFactory::getDocument(); return $document->get('head'); } /** * Deprecated, use JDocument->setMetaData instead. * * @since 1.0 * @deprecated As of version 1.5 * @param string Name of the metadata tag * @param string Content of the metadata tag * @param string Deprecated, ignored * @param string Deprecated, ignored * @see JDocument::setMetaData() */ function addMetaTag( $name, $content, $prepend = '', $append = '' ) { $document=& JFactory::getDocument(); $document->setMetadata($name, $content); } /** * Deprecated, use JDocument->setMetaData instead. * * @since 1.0 * @deprecated As of version 1.5 * @param string Name of the metadata tag * @param string Content of the metadata tag * @see JDocument::setMetaData() */ function appendMetaTag( $name, $content ) { $this->addMetaTag($name, $content); } /** * Deprecated, use JDocument->setMetaData instead * * @since 1.0 * @deprecated As of version 1.5 * @param string Name of the metadata tag * @param string Content of the metadata tag * @see JDocument::setMetaData() */ function prependMetaTag( $name, $content ) { $this->addMetaTag($name, $content); } /** * Deprecated, use JDocument->addCustomTag instead (only when document type is HTML). * * @since 1.0 * @deprecated As of version 1.5 * @param string Valid HTML * @see JDocumentHTML::addCustomTag() */ function addCustomHeadTag( $html ) { $document=& JFactory::getDocument(); if($document->getType() == 'html') { $document->addCustomTag($html); } } /** * Deprecated. * * @since 1.0 * @deprecated As of version 1.5 */ function getBlogSectionCount( ) { $menus = &JSite::getMenu(); return count($menus->getItems('type', 'content_blog_section')); } /** * Deprecated. * * @since 1.0 * @deprecated As of version 1.5 */ function getBlogCategoryCount( ) { $menus = &JSite::getMenu(); return count($menus->getItems('type', 'content_blog_category')); } /** * Deprecated. * * @since 1.0 * @deprecated As of version 1.5 */ function getGlobalBlogSectionCount( ) { $menus = &JSite::getMenu(); return count($menus->getItems('type', 'content_blog_section')); } /** * Deprecated. * * @since 1.0 * @deprecated As of version 1.5 */ function getStaticContentCount( ) { $menus = &JSite::getMenu(); return count($menus->getItems('type', 'content_typed')); } /** * Deprecated. * * @since 1.0 * @deprecated As of version 1.5 */ function getContentItemLinkCount( ) { $menus = &JSite::getMenu(); return count($menus->getItems('type', 'content_item_link')); } /** * Deprecated, use JApplicationHelper::getPath instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JApplicationHelper::getPath() */ function getPath($varname, $user_option = null) { jimport('joomla.application.helper'); return JApplicationHelper::getPath ($varname, $user_option); } /** * Deprecated, use JURI::base() instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JURI::base() */ function getBasePath($client=0, $addTrailingSlash = true) { return JURI::base(); } /** * Deprecated, use JFactory::getUser instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JFactory::getUser() */ function &getUser() { $user =& JFactory::getUser(); return $user; } /** * Deprecated, use ContentHelper::getItemid instead. * * @since 1.0 * @deprecated As of version 1.5 * @see ContentHelperRoute::getArticleRoute() */ function getItemid( $id ) { require_once JPATH_SITE.DS.'components'.DS.'com_content'.DS.'helpers'.DS.'route.php'; // Load the article data to know what section/category it is in. $article =& JTable::getInstance('content'); $article->load($id); $needles = array( 'article' => (int) $id, 'category' => (int) $article->catid, 'section' => (int) $article->sectionid, ); $item = ContentHelperRoute::_findItem($needles); $return = is_object($item) ? $item->id : null; return $return; } /** * Deprecated, use JDocument::setTitle instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JDocument::setTitle() */ function setPageTitle( $title=null ) { $document=& JFactory::getDocument(); $document->setTitle($title); } /** * Deprecated, use JDocument::getTitle instead. * * @since 1.0 * @deprecated As of version 1.5 * @see JDocument::getTitle() */ function getPageTitle() { $document=& JFactory::getDocument(); return $document->getTitle(); } }
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