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<?php
/**
* Kunena Component
* @package Kunena.Framework
* @subpackage Forum
*
* @copyright (C) 2008 - 2014 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();
/**
* class KunenaForum
*
* Main class for Kunena Forum which is always present if Kunena framework has been installed.
*
* This class can be used to detect and initialize Kunena framework and to make sure that your extension
* is compatible with the current version.
*/
abstract class KunenaForum {
protected static $version = false;
protected static $version_major = false;
protected static $version_date = false;
protected static $version_name = false;
const PUBLISHED = 0;
const UNAPPROVED = 1;
const DELETED = 2;
const TOPIC_DELETED = 3;
const TOPIC_CREATION = 4;
const MODERATOR = 1;
const ADMINISTRATOR = 2;
/**
* Check if Kunena Forum is safe to be used.
*
* If installer is running, it's unsafe to use our framework. Files may be currently replaced with
* new ones and the database structure might be inconsistent. Using forum during installation will
* likely cause fatal errors and data corruption if you attempt to update objects in the database.
*
* Always detect Kunena in your code before you start using the framework:
*
* <code>
* // Check if Kunena Forum has been installed and compatible with your code
* if (class_exists('KunenaForum') && KunenaForum::installed() && KunenaForum::isCompatible('2.0.0')) {
* // Initialize the framework (new in 2.0.0)
* KunenaForum::setup();
* // Start using the framework
* }
* </code>
*
* @see KunenaForum::enabled()
* @see KunenaForum::isCompatible()
* @see KunenaForum::setup()
*
* @return boolean True if Kunena has been fully installed.
*/
public static function installed() {
return !is_file(KPATH_ADMIN . '/install.php') || self::isDev();
}
/**
* Checks if Kunena Forum is safe to be used and online.
*
* It is a good practice to check if Kunena Forum is online before displaying
* forum content to the user. It's even more important if you allow user to post
* or manipulate forum! By following this practice administrator can have single
* point which he can use to be sure that nobody has access to any data inside
* his forum.
*
* Use case: Administrator is upgrading his forum to the next major version and wants
* to be sure that everything works before putting forum back to online. He logs in
* and can see everything. For everyone else no forum related information is shown.
*
* <code>
* // Check if Kunena Forum has been installed, online and compatible with your code
* if (class_exists('KunenaForum') && KunenaForum::enabled() && KunenaForum::isCompatible('2.0.0')) {
* // Initialize the framework (new in 2.0.0)
* KunenaForum::setup();
* // It's now safe to display something or to save Kunena objects
*}
* </code>
*
* @see KunenaForum::installed()
* @see KunenaForum::isCompatible()
* @see KunenaForum::setup()
*
* @param boolean $checkAdmin True if administrator is considered as a special case.
* @return boolean True if online.
*/
public static function enabled($checkAdmin = true) {
if (!JComponentHelper::isEnabled ( 'com_kunena', true )) {
return false;
}
$config = KunenaFactory::getConfig ();
return !$config->board_offline
|| ($checkAdmin && self::installed() && KunenaUserHelper::getMyself()->isAdmin());
}
/**
* Initialize Kunena Framework.
*
* This function initializes Kunena Framework. Main purpose of this
* function right now is to make sure all the translations have been loaded,
* but later it may contain other initialization tasks.
*
* Following code gives an example how to create backwards compatible code.
* Normally I wouldn't bother supporting deprecated unstable releases.
*
* <code>
* // We have already checked that Kunena 2.0+ has been installed and is online
*
* if (KunenaForum::isCompatible('2.0.0')) {
* KunenaForum::setup();
* } else {
* KunenaFactory::loadLanguage();
* }
* </code>
*
* @see KunenaForum::installed()
*
* Alternatively you could use method_exists() to check that the new API is in there.
*
* @since 2.0.0-BETA2
*/
public static function setup() {
$config = KunenaFactory::getConfig();
// Load language file for libraries.
KunenaFactory::loadLanguage('com_kunena.libraries', 'admin');
// Setup output caching.
$cache = JFactory::getCache('com_kunena', 'output');
if (!$config->get('cache')) $cache->setCaching(0);
$cache->setLifeTime($config->get('cache_time', 60));
// Setup error logging.
jimport('joomla.error.log');
$options = array('logger'=>'w3c', 'text_file'=>'kunena.php');
$categories = array('kunena');
$levels = JDEBUG || $config->debug ? JLog::ALL :
JLog::EMERGENCY & JLog::ALERT & JLog::CRITICAL & JLog::ERROR;
JLog::addLogger($options, $levels, $categories);
}
/**
* Check if Kunena Forum is compatible with your code.
*
* This function can be used to make sure that user has installed Kunena version
* that has been tested to work with your extension. All existing functions should
* be backwards compatible, but each release can add some new functionality, which
* you may want to use.
*
* <code>
* if (KunenaForum::isCompatible('2.0.1')) {
* // We can do it in the new way
* } else {
* // Use the old code instead
* }
* </code>
*
* @see KunenaForum::installed()
*
* @param string $version Minumum required version.
*
* @return boolean Yes, if it is safe to use Kunena Framework.
*/
public static function isCompatible($version) {
// If requested version is smaller than 2.0, it's not compatible
if (version_compare($version, '2.0', '<')) {
return false;
}
// Check if future version is needed (remove GIT and DEVn from the current version)
if (version_compare($version, preg_replace('/(-DEV\d*)?(-GIT)?/i', '', self::version()), '>')) {
return false;
}
return true;
}
/**
* Check if Kunena Forum is running from a Git repository.
*
* Developers tend to do their work directly in the Git repositories instead of
* creating and installing new builds after every change. This function can be
* used to check the condition and make sure we do not break users repository
* by replacing files during upgrade.
*
* @return boolean True if Git repository is detected.
*/
public static function isDev() {
if ('3.0.6' == '@' . 'kunenaversion' . '@') {
return true;
}
return false;
}
/**
* Returns the exact version from Kunena Forum.
*
* @return string Version number.
*/
public static function version() {
if (self::$version === false) {
self::buildVersion();
}
return self::$version;
}
/**
* Returns major version number (2.0, 2.1, 3.0 and so on).
*
* @return string Major version in xxx.yyy format.
*/
public static function versionMajor() {
if (self::$version_major === false) {
self::buildVersion();
}
return self::$version_major;
}
/**
* Returns build date from Kunena Forum (for Git today).
*
* @return string Date in yyyy-mm-dd format.
*/
public static function versionDate() {
if (self::$version_date === false) {
self::buildVersion();
}
return self::$version_date;
}
/**
* Returns codename from Kunena release.
*
* @return string Codename.
*/
public static function versionName() {
if (self::$version_name === false) {
self::buildVersion();
}
return self::$version_name;
}
/**
* Returns all version information together.
*
* @return object stdClass containing (version, major, date, name).
*/
public static function getVersionInfo() {
$version = new stdClass();
$version->version = self::version();
$version->major = self::versionMajor(); // New in K2.0.0-BETA2
$version->date = self::versionDate();
$version->name = self::versionName();
return $version;
}
/**
* Displays Kunena Forum view/layout inside your extension.
*
* <code>
*
* </code>
*
* @param string $viewName Name of the view.
* @param string $layout Name of the layout.
* @param null|string $template Name of the template file.
* @param array|JRegistry $params Extra parameters to control the model.
*/
public static function display($viewName, $layout='default', $template=null, $params = array()) {
// Filter input
$viewName = preg_replace( '/[^A-Z0-9_]/i', '', $viewName );
$layout = preg_replace( '/[^A-Z0-9_]/i', '', $layout );
$template = preg_replace( '/[^A-Z0-9_]/i', '', $template );
$template = $template ? $template : null;
$view = "KunenaView{$viewName}";
$model = "KunenaModel{$viewName}";
// Load potentially needed language files
KunenaFactory::loadLanguage();
KunenaFactory::loadLanguage('com_kunena.model');
KunenaFactory::loadLanguage('com_kunena.view');
require_once KPATH_SITE . '/views/common/view.html.php';
require_once KPATH_SITE . '/models/common.php';
if ( !class_exists( $view ) ) {
$vpath = KPATH_SITE . '/views/'.$viewName.'/view.html.php';
if (!is_file($vpath)) return;
require_once $vpath;
}
if ( $viewName != 'common' && !class_exists( $model ) ) {
$mpath = KPATH_SITE . '/models/'.$viewName.'.php';
if (!is_file($mpath)) return;
require_once $mpath;
}
$view = new $view ( array ('base_path' => KPATH_SITE ) );
/** @var KunenaView $view */
if ($params instanceof JRegistry) {
// Do nothing
} else {
$params = new JRegistry($params);
}
$params->set('layout', $layout);
// Push the model into the view (as default).
$model = new $model();
/** @var KunenaModel $model */
$model->initialize($params);
$view->setModel ( $model, true );
// Add template path
if ($params->get('templatepath')) $view->addTemplatePath($params->get('templatepath'));
if ($viewName != 'common') {
$view->common = new KunenaViewCommon ( array ('base_path' => KPATH_SITE ) );
$view->common->embedded = true;
}
// Flag view as being embedded
$view->embedded = true;
// Flag view as being teaser
$view->teaser = $params->get('teaser',0);
// Render the view.
$view->displayLayout ($layout, $template);
}
// Internal functions
protected static function buildVersion() {
if ('3.0.6' == '@' . 'kunenaversion' . '@') {
$file = JPATH_MANIFESTS . '/packages/pkg_kunena.xml';
$manifest = simplexml_load_file($file);
self::$version = (string) $manifest->version . '-GIT';
} else {
self::$version = strtoupper ( '3.0.6' );
}
self::$version_major = substr(self::$version, 0, 3);
self::$version_date = ('2014-07-28' == '@' . 'kunenaversiondate' . '@') ? JFactory::getDate()->format('Y-m-d') : '2014-07-28';
self::$version_name = ('Tala' == '@' . 'kunenaversionname' . '@') ? 'Git Repository' : 'Tala';
}
}