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|
<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
namespace Piwik;
use Piwik\Plugin\MetadataLoader;
use Piwik\Translate;
require_once PIWIK_INCLUDE_PATH . '/core/EventDispatcher.php';
/**
* Plugin manager
*
* @package Piwik
* @subpackage PluginsManager
*/
class PluginsManager
{
protected $pluginsToLoad = array();
protected $doLoadPlugins = true;
/**
* @var Plugin[]
*/
protected $loadedPlugins = array();
/**
* Default theme used in Piwik.
*/
const DEFAULT_THEME = "Zeitgeist";
protected $doLoadAlwaysActivatedPlugins = true;
protected $pluginToAlwaysActivate = array(
'CoreHome',
'CoreUpdater',
'CoreAdminHome',
'CorePluginsAdmin',
'CoreVisualizations',
'Installation',
'SitesManager',
'UsersManager',
'API',
'Proxy',
'LanguagesManager',
// default Piwik theme, always enabled
self::DEFAULT_THEME,
);
protected $corePluginsDisabledByDefault = array(
'AnonymizeIP',
'DBStats',
'DevicesDetection',
'TreemapVisualization', // should be moved to marketplace
);
// If a plugin hooks onto at least an event starting with "Tracker.", we load the plugin during tracker
const TRACKER_EVENT_PREFIX = 'Tracker.';
static private $instance = null;
/**
* Returns the singleton PluginsManager
*
* @return PluginsManager
*/
static public function getInstance()
{
if (self::$instance == null) {
self::$instance = new self;
}
return self::$instance;
}
/**
* Update Plugins config
*
* @param array $plugins Plugins
*/
private function updatePluginsConfig($plugins)
{
$section = Config::getInstance()->Plugins;
$section['Plugins'] = $plugins;
Config::getInstance()->Plugins = $section;
}
/**
* Update Plugins_Tracker config
*
* @param array $plugins Plugins
*/
private function updatePluginsTrackerConfig($plugins)
{
$section = Config::getInstance()->Plugins_Tracker;
$section['Plugins_Tracker'] = $plugins;
Config::getInstance()->Plugins_Tracker = $section;
}
/**
* Update PluginsInstalled config
*
* @param array $plugins Plugins
*/
private function updatePluginsInstalledConfig($plugins)
{
$section = Config::getInstance()->PluginsInstalled;
$section['PluginsInstalled'] = $plugins;
Config::getInstance()->PluginsInstalled = $section;
}
/**
* Returns true if plugin is always activated
*
* @param string $name Name of plugin
* @return bool
*/
private function isPluginAlwaysActivated($name)
{
return in_array($name, $this->pluginToAlwaysActivate);
}
/**
* Returns true if the plugin can be uninstalled. Any non-core plugin can be uninstalled.
*
* @param $name
* @return bool
*/
private function isPluginUninstallable($name)
{
return !$this->isPluginBundledWithCore($name);
}
/**
* Returns true if plugin has been activated
*
* @param string $name Name of plugin
* @return bool
*/
public function isPluginActivated($name)
{
return in_array($name, $this->pluginsToLoad)
|| $this->isPluginAlwaysActivated($name);
}
/**
* Returns true if plugin is loaded (in memory)
*
* @param string $name Name of plugin
* @return bool
*/
public function isPluginLoaded($name)
{
return isset($this->loadedPlugins[$name]);
}
/**
* Reads the directories inside the plugins/ directory and returns their names in an array
*
* @return array
*/
public function readPluginsDirectory()
{
$pluginsName = _glob(self::getPluginsDirectory() . '*', GLOB_ONLYDIR);
$result = array();
if ($pluginsName != false) {
foreach ($pluginsName as $path) {
if (self::pluginStructureLooksValid($path)) {
$result[] = basename($path);
}
}
}
return $result;
}
public static function getPluginsDirectory()
{
return PIWIK_INCLUDE_PATH . '/plugins/';
}
/**
* Uninstalls a Plugin (deletes plugin files from the disk)
* Only deactivated plugins can be uninstalled
*
* @param $pluginName
* @throws \Exception
* @return bool
*/
public function uninstallPlugin($pluginName)
{
if($this->isPluginActivated($pluginName)) {
throw new \Exception("To uninstall the plugin $pluginName, first disable it in Piwik > Settings > Plugins");
}
if(!$this->isPluginInFilesystem($pluginName)) {
throw new \Exception("You are trying to uninstall the plugin $pluginName but it was not found in the directory piwik/plugins/");
}
$this->returnLoadedPluginsInfo();
$plugin = $this->getLoadedPlugin($pluginName);
$plugin->uninstall();
Option::getInstance()->delete('version_' . $pluginName);
$this->removePluginFromPluginsConfig($pluginName);
$this->removePluginFromPluginsInstalledConfig($pluginName);
$this->removePluginFromTrackerConfig($pluginName);
Config::getInstance()->forceSave();
Filesystem::deleteAllCacheOnUpdate();
self::deletePluginFromFilesystem($pluginName);
if($this->isPluginInFilesystem($pluginName)) {
return false;
}
return true;
}
public static function deletePluginFromFilesystem($plugin)
{
Filesystem::unlinkRecursive(PIWIK_INCLUDE_PATH . '/plugins/' . $plugin, $deleteRootToo = true);
}
/**
* Deactivate plugin
*
* @param string $pluginName Name of plugin
* @param array|bool $plugins Array of plugin names
* @return array|bool
*/
public function deactivatePlugin($pluginName, $plugins = false)
{
if (empty($plugins)) {
$plugins = $this->pluginsToLoad;
}
$plugin = $this->loadPlugin($pluginName);
if ($plugin !== null) {
$plugin->deactivate();
}
$this->removePluginFromPluginsConfig($pluginName, $plugins);
$this->removePluginFromTrackerConfig($pluginName);
Config::getInstance()->forceSave();
Filesystem::deleteAllCacheOnUpdate();
return $plugins;
}
/**
* Install loaded plugins
*/
public function installLoadedPlugins()
{
foreach ($this->getLoadedPlugins() as $plugin) {
try {
$this->installPluginIfNecessary($plugin);
} catch (\Exception $e) {
echo $e->getMessage();
}
}
}
/**
* Activate the specified plugin and install (if needed)
*
* @param string $pluginName Name of plugin
* @throws \Exception
*/
public function activatePlugin($pluginName)
{
$plugins = Config::getInstance()->Plugins['Plugins'];
if (in_array($pluginName, $plugins)) {
throw new \Exception("Plugin '$pluginName' already activated.");
}
if (!$this->isPluginInFilesystem($pluginName)) {
// ToDo: This fails in tracker-mode. We should log this however.
//Piwik::log(sprintf("Unable to find the plugin '%s' in activatePlugin.", $pluginName));
return;
}
// Only one theme enabled at a time
$themeEnabled = $this->getThemeEnabled();
if($themeEnabled && $themeEnabled->getPluginName() != self::DEFAULT_THEME) {
$themeAlreadyEnabled = $themeEnabled->getPluginName();
$plugin = $this->loadPlugin($pluginName);
if($plugin->isTheme()) {
$plugins = $this->deactivatePlugin( $themeAlreadyEnabled, $plugins );
}
}
// Load plugin
$plugin = $this->loadPlugin($pluginName);
if ($plugin === null) {
return;
}
$this->installPluginIfNecessary($plugin);
$plugin->activate();
// we add the plugin to the list of activated plugins
if (!in_array($pluginName, $plugins)) {
$plugins[] = $pluginName;
}
$plugins = array_unique($plugins);
// the config file will automatically be saved with the new plugin
$this->updatePluginsConfig($plugins);
Config::getInstance()->forceSave();
Filesystem::deleteAllCacheOnUpdate();
}
protected function isPluginInFilesystem($pluginName)
{
$existingPlugins = $this->readPluginsDirectory();
$isPluginInFilesystem = array_search($pluginName, $existingPlugins) !== false;
return Filesystem::isValidFilename($pluginName)
&& $isPluginInFilesystem;
}
/**
* Returns the name of the non default theme currently enabled.
*
* If Zeitgeist is enabled, returns false (nb: Zeitgeist cannot be disabled)
*
* @return Plugin
*/
public function getThemeEnabled()
{
$plugins = $this->getLoadedPlugins();
$theme = false;
foreach($plugins as $plugin) {
/* @var $plugin Plugin */
if($plugin->isTheme()
&& $this->isPluginActivated($plugin->getPluginName())) {
if($plugin->getPluginName() != self::DEFAULT_THEME) {
return $plugin; // enabled theme (not default)
}
$theme = $plugin; // default theme
}
}
return $theme;
}
/**
* Loads in memory the Plugins specified in the config.ini.php file
*
* @return array
*/
public function returnLoadedPluginsInfo()
{
$plugins = array();
$listPlugins = array_merge(
$this->readPluginsDirectory(),
Config::getInstance()->Plugins['Plugins']
);
$listPlugins = array_unique($listPlugins);
foreach ($listPlugins as $pluginName) {
// If the plugin is not core and looks bogus, do not load
if($this->isPluginThirdPartyAndBogus($pluginName))
{
$info = array(
'invalid' => true,
'activated' => false,
'alwaysActivated' => false,
'uninstallable' => true,
);
} else {
$this->loadPlugin($pluginName);
$info = array(
'activated' => $this->isPluginActivated($pluginName),
'alwaysActivated' => $this->isPluginAlwaysActivated($pluginName),
'uninstallable' => $this->isPluginUninstallable($pluginName),
);
}
$plugins[$pluginName] = $info;
}
$this->loadPluginTranslations();
$loadedPlugins = $this->getLoadedPlugins();
foreach ($loadedPlugins as $oPlugin) {
$pluginName = $oPlugin->getPluginName();
$plugins[$pluginName]['info'] = $oPlugin->getInformation();
}
return $plugins;
}
protected static function isManifestFileFound($path)
{
return file_exists($path . "/" . MetadataLoader::PLUGIN_JSON_FILENAME);
}
public function isPluginBundledWithCore($name)
{
// Reading the plugins from the global.ini.php config file
$pluginsBundledWithPiwik = Config::getInstance()->getFromDefaultConfig('Plugins');
$pluginsBundledWithPiwik = $pluginsBundledWithPiwik['Plugins'];
return (!empty($pluginsBundledWithPiwik)
&& in_array($name, $pluginsBundledWithPiwik))
|| in_array($name, $this->corePluginsDisabledByDefault);
}
protected function isPluginThirdPartyAndBogus($pluginName)
{
$path = $this->getPluginsDirectory() . $pluginName;
$isBogus = !$this->isPluginBundledWithCore($pluginName)
&& !$this->isManifestFileFound($path);
return $isBogus;
}
/**
* Load the specified plugins
*
* @param array $pluginsToLoad Array of plugins to load
*/
public function loadPlugins(array $pluginsToLoad)
{
// case no plugins to load
if (is_null($pluginsToLoad)) {
$pluginsToLoad = array();
}
$this->pluginsToLoad = $pluginsToLoad;
$this->reloadPlugins();
}
/**
* Disable plugin loading
*/
public function doNotLoadPlugins()
{
$this->doLoadPlugins = false;
}
/**
* Disable loading of "always activated" plugins
*/
public function doNotLoadAlwaysActivatedPlugins()
{
$this->doLoadAlwaysActivatedPlugins = false;
}
/**
* Load translations for loaded plugins
*
* @param bool|string $language Optional language code
*/
public function loadPluginTranslations($language = false)
{
if (empty($language)) {
$language = Translate::getInstance()->getLanguageToLoad();
}
$plugins = $this->getLoadedPlugins();
foreach ($plugins as $plugin) {
$this->loadTranslation($plugin, $language);
}
}
/**
* Execute postLoad() hook for loaded plugins
*
* @see Piwik_Plugin::postLoad()
*/
public function postLoadPlugins()
{
$plugins = $this->getLoadedPlugins();
foreach ($plugins as $plugin) {
$plugin->postLoad();
}
}
/**
* Returns an array containing the plugins class names (eg. 'UserCountry' and NOT 'UserCountry')
*
* @return array
*/
public function getLoadedPluginsName()
{
return array_keys($this->getLoadedPlugins());
}
/**
* Returns an array of key,value with the following format: array(
* 'UserCountry' => Plugin $pluginObject,
* 'UserSettings' => Plugin $pluginObject,
* );
*
* @return Plugin[]
*/
public function getLoadedPlugins()
{
return $this->loadedPlugins;
}
/**
* Returns the given Plugin object
*
* @param string $name
* @throws \Exception
* @return Plugin
*/
public function getLoadedPlugin($name)
{
if (!isset($this->loadedPlugins[$name])) {
throw new \Exception("The plugin '$name' has not been loaded.");
}
return $this->loadedPlugins[$name];
}
/**
* Load the plugins classes installed.
* Register the observers for every plugin.
*/
private function reloadPlugins()
{
$this->pluginsToLoad = array_unique($this->pluginsToLoad);
if ($this->doLoadAlwaysActivatedPlugins) {
$this->pluginsToLoad = array_merge($this->pluginsToLoad, $this->pluginToAlwaysActivate);
}
foreach ($this->pluginsToLoad as $pluginName) {
if (!$this->isPluginLoaded($pluginName)
&& !$this->isPluginThirdPartyAndBogus($pluginName)) {
$newPlugin = $this->loadPlugin($pluginName);
if ($newPlugin === null) {
continue;
}
}
}
}
public function getIgnoredBogusPlugins()
{
$ignored = array();
foreach($this->pluginsToLoad as $pluginName) {
if($this->isPluginThirdPartyAndBogus($pluginName)) {
$ignored[] = $pluginName;
}
}
return $ignored;
}
/**
* Loads the plugin filename and instantiates the plugin with the given name, eg. UserCountry
* Do NOT give the class name ie. UserCountry, but give the plugin name ie. UserCountry
*
* @param string $pluginName
* @throws \Exception
* @return Plugin|null
*/
public function loadPlugin($pluginName)
{
if (isset($this->loadedPlugins[$pluginName])) {
return $this->loadedPlugins[$pluginName];
}
$newPlugin = $this->makePluginClass($pluginName);
$this->addLoadedPlugin($pluginName, $newPlugin);
EventDispatcher::getInstance()->postPendingEventsTo($newPlugin);
return $newPlugin;
}
/**
* @param $pluginName
* @return Plugin
* @throws \Exception
*/
protected function makePluginClass($pluginName)
{
$pluginFileName = sprintf("%s/%s.php", $pluginName, $pluginName);
$pluginClassName = $pluginName;
if (!Filesystem::isValidFilename($pluginName)) {
throw new \Exception(sprintf("The plugin filename '%s' is not a valid filename", $pluginFileName));
}
$path = self::getPluginsDirectory() . $pluginFileName;
if (!file_exists($path)) {
// Create the smallest minimal Piwik Plugin
// Eg. Used for Zeitgeist default theme which does not have a Zeitgeist.php file
return new Plugin($pluginName);
}
require_once $path;
$namespacedClass = $this->getClassNamePlugin($pluginName);
if(!class_exists($namespacedClass, false)) {
throw new \Exception("The class $pluginClassName couldn't be found in the file '$path'");
}
$newPlugin = new $namespacedClass;
if (!($newPlugin instanceof Plugin)) {
throw new \Exception("The plugin $pluginClassName in the file $path must inherit from Plugin.");
}
return $newPlugin;
}
protected function getClassNamePlugin($pluginName)
{
$className = $pluginName;
if($pluginName == 'API') {
$className = 'Plugin';
}
return "\\Piwik\\Plugins\\$pluginName\\$className";
}
/**
* Unload plugin
*
* @param Plugin|string $plugin
* @throws \Exception
*/
public function unloadPlugin($plugin)
{
if (!($plugin instanceof Plugin)) {
$oPlugin = $this->loadPlugin($plugin);
if ($oPlugin === null) {
unset($this->loadedPlugins[$plugin]);
return;
}
$plugin = $oPlugin;
}
unset($this->loadedPlugins[$plugin->getPluginName()]);
}
/**
* Unload all loaded plugins
*/
public function unloadPlugins()
{
$pluginsLoaded = $this->getLoadedPlugins();
foreach ($pluginsLoaded as $plugin) {
$this->unloadPlugin($plugin);
}
}
/**
* Install loaded plugins
*/
private function installPlugins()
{
foreach ($this->getLoadedPlugins() as $plugin) {
$this->installPlugin($plugin);
}
}
/**
* Install a specific plugin
*
* @param Plugin $plugin
* @throws PluginsManager_PluginException if installation fails
*/
private function installPlugin(Plugin $plugin)
{
try {
$plugin->install();
} catch (\Exception $e) {
throw new PluginsManager_PluginException($plugin->getPluginName(), $e->getMessage());
}
}
/**
* Add a plugin in the loaded plugins array
*
* @param string $pluginName plugin name without prefix (eg. 'UserCountry')
* @param Plugin $newPlugin
*/
private function addLoadedPlugin($pluginName, Plugin $newPlugin)
{
$this->loadedPlugins[$pluginName] = $newPlugin;
}
/**
* Load translation
*
* @param Plugin $plugin
* @param string $langCode
* @throws \Exception
* @return bool whether the translation was found and loaded
*/
private function loadTranslation($plugin, $langCode)
{
// we are in Tracker mode if Loader is not (yet) loaded
if (!class_exists('Piwik\Loader', false)) {
return false;
}
$pluginName = $plugin->getPluginName();
$path = self::getPluginsDirectory() . $pluginName . '/lang/%s.json';
$defaultLangPath = sprintf($path, $langCode);
$defaultEnglishLangPath = sprintf($path, 'en');
if (file_exists($defaultLangPath)) {
$data = file_get_contents($defaultLangPath);
$translations = json_decode($data, true);
} elseif (file_exists($defaultEnglishLangPath)) {
$data = file_get_contents($defaultEnglishLangPath);
$translations = json_decode($data, true);
} else {
return false;
}
if(isset($translations[$pluginName])) {
// only merge translations of plugin - prevents overwritten strings
Translate::getInstance()->mergeTranslationArray(array($pluginName => $translations[$pluginName]));
}
return true;
}
/**
* Return names of installed plugins
*
* @return array
*/
public function getInstalledPluginsName()
{
$pluginNames = Config::getInstance()->PluginsInstalled['PluginsInstalled'];
return $pluginNames;
}
/**
* Returns names of plugins that should be loaded, but cannot be since their
* files cannot be found.
*
* @return array
*/
public function getMissingPlugins()
{
$missingPlugins = array();
if (isset(Config::getInstance()->Plugins['Plugins'])) {
$plugins = Config::getInstance()->Plugins['Plugins'];
foreach ($plugins as $pluginName) {
// if a plugin is listed in the config, but is not loaded, it does not exist in the folder
if (!self::getInstance()->isPluginLoaded($pluginName)) {
$missingPlugins[] = $pluginName;
}
}
}
return $missingPlugins;
}
/**
* Install a plugin, if necessary
*
* @param Plugin $plugin
*/
private function installPluginIfNecessary(Plugin $plugin)
{
$pluginName = $plugin->getPluginName();
$saveConfig = false;
// is the plugin already installed or is it the first time we activate it?
$pluginsInstalled = $this->getInstalledPluginsName();
if (!in_array($pluginName, $pluginsInstalled)) {
$this->installPlugin($plugin);
$pluginsInstalled[] = $pluginName;
$this->updatePluginsInstalledConfig($pluginsInstalled);
$saveConfig = true;
}
if ($this->isTrackerPlugin($plugin)) {
$pluginsTracker = Config::getInstance()->Plugins_Tracker['Plugins_Tracker'];
if (is_null($pluginsTracker)) {
$pluginsTracker = array();
}
if (!in_array($pluginName, $pluginsTracker)) {
$pluginsTracker[] = $pluginName;
$this->updatePluginsTrackerConfig($pluginsTracker);
$saveConfig = true;
}
}
if ($saveConfig) {
Config::getInstance()->forceSave();
}
}
protected function isTrackerPlugin(Plugin $plugin)
{
$hooks = $plugin->getListHooksRegistered();
$hookNames = array_keys($hooks);
foreach ($hookNames as $name) {
if (strpos($name, self::TRACKER_EVENT_PREFIX) === 0) {
return true;
}
}
return false;
}
private static function pluginStructureLooksValid($path)
{
$name = basename($path);
return file_exists($path . "/" . $name . ".php")
|| self::isManifestFileFound($path);
}
/**
* @param $pluginName
*/
private function removePluginFromPluginsInstalledConfig($pluginName)
{
$pluginsInstalled = Config::getInstance()->PluginsInstalled['PluginsInstalled'];
$key = array_search($pluginName, $pluginsInstalled);
if ($key !== false) {
unset($pluginsInstalled[$key]);
}
$this->updatePluginsInstalledConfig($pluginsInstalled);
}
/**
* @param $pluginName
* @param $plugins
* @return mixed
*/
private function removePluginFromPluginsConfig($pluginName, $plugins = false)
{
if (empty($plugins)) {
$plugins = $this->pluginsToLoad;
}
$key = array_search($pluginName, $plugins);
if ($key !== false) {
unset($plugins[$key]);
}
$this->updatePluginsConfig($plugins);
}
/**
* @param $pluginName
*/
private function removePluginFromTrackerConfig($pluginName)
{
$pluginsTracker = Config::getInstance()->Plugins_Tracker['Plugins_Tracker'];
if (!is_null($pluginsTracker)) {
$key = array_search($pluginName, $pluginsTracker);
if ($key !== false) {
unset($pluginsTracker[$key]);
$this->updatePluginsTrackerConfig($pluginsTracker);
}
}
}
}
/**
* @package Piwik
* @subpackage PluginsManager
*/
class PluginsManager_PluginException extends \Exception
{
function __construct($pluginName, $message)
{
parent::__construct("There was a problem installing the plugin " . $pluginName . ": " . $message . "
If this plugin has already been installed, and if you want to hide this message</b>, you must add the following line under the
[PluginsInstalled]
entry in your config/config.ini.php file:
PluginsInstalled[] = $pluginName");
}
}
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