TrackManiaControl/application/core/Plugins/PluginManager.php

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<?php
namespace ManiaControl\Plugins;
require_once __DIR__ . '/Plugin.php';
require_once __DIR__ . '/PluginMenu.php';
use ManiaControl\ManiaControl;
use ManiaControl\Callbacks\CallbackListener;
use ManiaControl\Manialinks\ManialinkPageAnswerListener;
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/**
* Class managing Plugins
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*
* @author steeffeen & kremsy
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*/
class PluginManager {
/**
* Constants
*/
const TABLE_PLUGINS = 'mc_plugins';
/**
* Private properties
*/
private $maniaControl = null;
private $pluginMenu = null;
private $activePlugins = array();
private $pluginClasses = array();
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/**
* Construct plugin manager
*
* @param \ManiaControl\ManiaControl $maniaControl
*/
public function __construct(ManiaControl $maniaControl) {
$this->maniaControl = $maniaControl;
$this->initTables();
$this->pluginMenu = new PluginMenu($maniaControl);
$this->maniaControl->configurator->addMenu($this->pluginMenu);
}
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/**
* Initialize necessary database tables
*
* @return bool
*/
private function initTables() {
$mysqli = $this->maniaControl->database->mysqli;
$pluginsTableQuery = "CREATE TABLE IF NOT EXISTS `" . self::TABLE_PLUGINS . "` (
`index` int(11) NOT NULL AUTO_INCREMENT,
`className` varchar(100) COLLATE utf8_unicode_ci NOT NULL,
`active` tinyint(1) NOT NULL DEFAULT '0',
`changed` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`index`),
UNIQUE KEY `className` (`className`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='ManiaControl plugin status' AUTO_INCREMENT=1;";
$tableStatement = $mysqli->prepare($pluginsTableQuery);
if ($mysqli->error) {
trigger_error($mysqli->error, E_USER_ERROR);
return false;
}
$tableStatement->execute();
if ($tableStatement->error) {
trigger_error($tableStatement->error, E_USER_ERROR);
return false;
}
$tableStatement->close();
return true;
}
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/**
* Check if the plugin is running
*
* @param string $pluginClass
* @return bool
*/
public function isPluginActive($pluginClass) {
if (is_object($pluginClass)) {
$pluginClass = get_class($pluginClass);
}
return isset($this->activePlugins[$pluginClass]);
}
/**
* Check if the given class implements the plugin interface
*
* @param string $pluginClass
* @return bool
*/
public function isPluginClass($pluginClass) {
if (is_object($pluginClass)) {
$pluginClass = get_class($pluginClass);
}
if (!in_array(Plugin::PLUGIN_INTERFACE, class_implements($pluginClass))) {
return false;
}
return true;
}
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/**
* Add the class to array of loaded plugin classes
*
* @param string $pluginClass
* @return bool
*/
public function addPluginClass($pluginClass) {
if (is_object($pluginClass)) {
$pluginClass = get_class($pluginClass);
}
if (in_array($pluginClass, $this->pluginClasses)) {
return false;
}
if (!$this->isPluginClass($pluginClass)) {
return false;
}
array_push($this->pluginClasses, $pluginClass);
return true;
}
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/**
* Activate and start the plugin with the given name
*
* @param string $pluginClass
* @return bool
*/
public function activatePlugin($pluginClass) {
if (!is_string($pluginClass)) {
return false;
}
if (!$this->isPluginClass($pluginClass)) {
return false;
}
if ($this->isPluginActive($pluginClass)) {
return false;
}
$plugin = new $pluginClass();
$plugin->load($this->maniaControl);
$this->activePlugins[$pluginClass] = $plugin;
$this->savePluginStatus($pluginClass, true);
return true;
}
/**
* Deactivate the plugin with the given class
*
* @param string $pluginClass
* @return bool
*/
public function deactivatePlugin($pluginClass) {
if (is_object($pluginClass)) {
$pluginClass = get_class($pluginClass);
}
if (!$this->isPluginActive($pluginClass)) {
return false;
}
$plugin = $this->activePlugins[$pluginClass];
unset($this->activePlugins[$pluginClass]);
$plugin->unload();
$interfaces = class_implements($pluginClass);
if (in_array(CallbackListener::CALLBACKLISTENER_INTERFACE, $interfaces)) {
$this->maniaControl->callbackManager->unregisterCallbackListener($plugin);
$this->maniaControl->callbackManager->unregisterScriptCallbackListener($plugin);
}
if (in_array(ManialinkPageAnswerListener::MANIALINKPAGEANSWERLISTENER_INTERFACE, $interfaces)) {
$this->maniaControl->manialinkManager->unregisterManialinkPageAnswerListener($plugin);
}
$this->savePluginStatus($pluginClass, false);
return true;
}
/**
* Load complete plugins directory and start all configured plugins
*/
public function loadPlugins() {
$pluginsDirectory = ManiaControlDir . '/plugins/';
$pluginFiles = scandir($pluginsDirectory, 0);
foreach ($pluginFiles as $pluginFile) {
if (stripos($pluginFile, '.') === 0) {
continue;
}
$classesBefore = get_declared_classes();
$success = include_once $pluginsDirectory . $pluginFile;
if (!$success) {
continue;
}
$classesAfter = get_declared_classes();
$newClasses = array_diff($classesAfter, $classesBefore);
foreach ($newClasses as $className) {
if (!$this->isPluginClass($className)) {
continue;
}
$this->addPluginClass($className);
if ($this->isPluginActive($className)) {
continue;
}
if (!$this->getSavedPluginStatus($className)) {
continue;
}
$this->activatePlugin($className);
}
}
}
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/**
* Get all declared plugin class names
*
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* @return array
*/
public function getPluginClasses() {
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return $this->pluginClasses;
}
/**
* Get all active plugins
*
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* @return array
*/
public function getActivePlugins() {
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return $this->activePlugins;
}
/**
* Save plugin status in database
*
* @param string $className
* @param bool $active
* @return bool
*/
private function savePluginStatus($className, $active) {
$mysqli = $this->maniaControl->database->mysqli;
$pluginStatusQuery = "INSERT INTO `" . self::TABLE_PLUGINS . "` (
`className`,
`active`
) VALUES (
?, ?
) ON DUPLICATE KEY UPDATE
`active` = VALUES(`active`);";
$pluginStatement = $mysqli->prepare($pluginStatusQuery);
if ($mysqli->error) {
trigger_error($mysqli->error);
return false;
}
$activeInt = ($active ? 1 : 0);
$pluginStatement->bind_param('si', $className, $activeInt);
$pluginStatement->execute();
if ($pluginStatement->error) {
trigger_error($pluginStatement->error);
$pluginStatement->close();
return false;
}
$pluginStatement->close();
return true;
}
/**
* Get plugin status from database
*
* @param string $className
* @return bool
*/
private function getSavedPluginStatus($className) {
$mysqli = $this->maniaControl->database->mysqli;
$pluginStatusQuery = "SELECT `active` FROM `" . self::TABLE_PLUGINS . "`
WHERE `className` = ?;";
$pluginStatement = $mysqli->prepare($pluginStatusQuery);
if ($mysqli->error) {
trigger_error($mysqli->error);
return false;
}
$pluginStatement->bind_param('s', $className);
$pluginStatement->execute();
if ($pluginStatement->error) {
trigger_error($pluginStatement->error);
$pluginStatement->close();
return false;
}
$pluginStatement->store_result();
if ($pluginStatement->num_rows <= 0) {
$pluginStatement->free_result();
$pluginStatement->close();
$this->savePluginStatus($className, false);
return false;
}
$pluginStatement->bind_result($activeInt);
$pluginStatement->fetch();
$active = ($activeInt === 1);
$pluginStatement->free_result();
$pluginStatement->close();
return $active;
}
}
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?>