mirror of
https://github.com/wintercms/winter.git
synced 2024-06-28 05:33:29 +02:00
649 lines
16 KiB
PHP
649 lines
16 KiB
PHP
<?php namespace System\Classes;
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use App;
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use Str;
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use File;
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use Lang;
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use View;
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use Config;
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use RecursiveIteratorIterator;
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use RecursiveDirectoryIterator;
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use Illuminate\Container\Container;
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use ApplicationException;
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/**
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* Plugin manager
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*
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* @package october\system
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* @author Alexey Bobkov, Samuel Georges
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*/
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class PluginManager
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{
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use \October\Rain\Support\Traits\Singleton;
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/**
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* The application instance, since Plugins are an extension of a Service Provider
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*/
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protected $app;
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/**
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* Container object used for storing plugin information objects.
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*/
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protected $plugins;
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/**
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* @var array A map of plugins and their directory paths.
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*/
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protected $pathMap = [];
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/**
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* @var bool Check if all plugins have had the register() method called.
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*/
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protected $registered = false;
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/**
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* @var bool Check if all plugins have had the boot() method called.
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*/
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protected $booted = false;
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/**
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* @var string Path to the disarm file.
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*/
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protected $metaFile;
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/**
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* @var array Collection of disabled plugins
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*/
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protected $disabledPlugins = [];
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/**
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* @var boolean Prevent all plugins from registering or booting
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*/
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public static $noInit = false;
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/**
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* Initializes the plugin manager
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*/
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protected function init()
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{
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$this->bindContainerObjects();
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$this->metaFile = storage_path() . '/cms/disabled.json';
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$this->loadDisabled();
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$this->loadPlugins();
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$this->loadDependencies();
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}
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/**
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* These objects are "soft singletons" and may be lost when
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* the IoC container reboots. This provides a way to rebuild
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* for the purposes of unit testing.
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*/
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public function bindContainerObjects()
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{
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$this->app = App::make('app');
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}
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/**
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* Finds all available plugins and loads them in to the $plugins array.
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* @return array
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*/
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public function loadPlugins()
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{
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$this->plugins = [];
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/**
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* Locate all plugins and binds them to the container
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*/
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foreach ($this->getPluginNamespaces() as $namespace => $path) {
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$this->loadPlugin($namespace, $path);
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}
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return $this->plugins;
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}
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/**
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* Loads a single plugin in to the manager.
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* @param string $namespace Eg: Acme\Blog
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* @param string $path Eg: plugins_path().'/acme/blog';
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* @return void
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*/
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public function loadPlugin($namespace, $path)
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{
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$className = $namespace.'\Plugin';
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$classPath = $path.'/Plugin.php';
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// Autoloader failed?
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if (!class_exists($className)) {
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include_once $classPath;
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}
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// Not a valid plugin!
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if (!class_exists($className)) {
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return;
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}
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$classObj = new $className($this->app);
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$classId = $this->getIdentifier($classObj);
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/*
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* Check for disabled plugins
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*/
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if ($this->isDisabled($classId)) {
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$classObj->disabled = true;
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}
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$this->plugins[$classId] = $classObj;
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$this->pathMap[$classId] = $path;
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return $classObj;
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}
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/**
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* Runs the register() method on all plugins. Can only be called once.
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* @return void
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*/
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public function registerAll()
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{
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if ($this->registered) {
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return;
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}
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foreach ($this->plugins as $pluginId => $plugin) {
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$this->registerPlugin($plugin, $pluginId);
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}
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$this->registered = true;
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}
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/**
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* Registers a single plugin object.
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* @param PluginBase $plugin
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* @param string $pluginId
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* @return void
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*/
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public function registerPlugin($plugin, $pluginId = null)
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{
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if (!$pluginId) {
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$pluginId = $this->getIdentifier($plugin);
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}
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if (!$plugin || $plugin->disabled) {
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return;
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}
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$pluginPath = $this->getPluginPath($plugin);
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$pluginNamespace = strtolower($pluginId);
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/*
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* Register plugin class autoloaders
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*/
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$autoloadPath = $pluginPath . '/vendor/autoload.php';
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if (File::isFile($autoloadPath)) {
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require_once $autoloadPath;
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}
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if (!self::$noInit || $plugin->elevated) {
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$plugin->register();
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}
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/*
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* Register language namespaces
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*/
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$langPath = $pluginPath . '/lang';
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if (File::isDirectory($langPath)) {
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Lang::addNamespace($pluginNamespace, $langPath);
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}
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/*
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* Register configuration path
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*/
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$configPath = $pluginPath . '/config';
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if (File::isDirectory($configPath)) {
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Config::package($pluginNamespace, $configPath, $pluginNamespace);
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}
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/*
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* Register views path
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*/
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$viewsPath = $pluginPath . '/views';
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if (File::isDirectory($viewsPath)) {
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View::addNamespace($pluginNamespace, $viewsPath);
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}
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/*
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* Add routes, if available
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*/
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$routesFile = $pluginPath . '/routes.php';
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if (File::exists($routesFile)) {
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require $routesFile;
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}
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}
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/**
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* Runs the boot() method on all plugins. Can only be called once.
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*/
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public function bootAll()
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{
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if ($this->booted) {
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return;
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}
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foreach ($this->plugins as $plugin) {
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$this->bootPlugin($plugin);
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}
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$this->booted = true;
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}
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/**
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* Registers a single plugin object.
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* @param PluginBase $plugin
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* @return void
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*/
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public function bootPlugin($plugin)
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{
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if (!$plugin || $plugin->disabled) {
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return;
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}
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if (!self::$noInit || $plugin->elevated) {
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$plugin->boot();
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}
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}
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/**
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* Returns the directory path to a plugin
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*/
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public function getPluginPath($id)
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{
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$classId = $this->getIdentifier($id);
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if (!isset($this->pathMap[$classId])) {
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return null;
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}
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return File::normalizePath($this->pathMap[$classId]);
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}
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/**
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* Check if a plugin exists and is enabled.
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* @param string $id Plugin identifier, eg: Namespace.PluginName
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* @return boolean
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*/
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public function exists($id)
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{
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return (!$this->findByIdentifier($id) || $this->isDisabled($id))
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? false
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: true;
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}
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/**
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* Returns an array with all registered plugins
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* The index is the plugin namespace, the value is the plugin information object.
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*/
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public function getPlugins()
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{
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return array_diff_key($this->plugins, $this->disabledPlugins);
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}
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/**
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* Returns a plugin registration class based on its namespace (Author\Plugin).
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*/
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public function findByNamespace($namespace)
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{
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if (!$this->hasPlugin($namespace)) {
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return null;
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}
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$classId = $this->getIdentifier($namespace);
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return $this->plugins[$classId];
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}
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/**
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* Returns a plugin registration class based on its identifier (Author.Plugin).
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*/
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public function findByIdentifier($identifier)
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{
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if (!isset($this->plugins[$identifier])) {
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$identifier = $this->normalizeIdentifier($identifier);
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}
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if (!isset($this->plugins[$identifier])) {
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return null;
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}
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return $this->plugins[$identifier];
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}
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/**
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* Checks to see if a plugin has been registered.
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*/
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public function hasPlugin($namespace)
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{
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$classId = $this->getIdentifier($namespace);
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return isset($this->plugins[$classId]);
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}
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/**
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* Returns a flat array of vendor plugin namespaces and their paths
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*/
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public function getPluginNamespaces()
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{
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$classNames = [];
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foreach ($this->getVendorAndPluginNames() as $vendorName => $vendorList) {
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foreach ($vendorList as $pluginName => $pluginPath) {
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$namespace = '\\'.$vendorName.'\\'.$pluginName;
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$namespace = Str::normalizeClassName($namespace);
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$classNames[$namespace] = $pluginPath;
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}
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}
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return $classNames;
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}
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/**
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* Returns a 2 dimensional array of vendors and their plugins.
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*/
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public function getVendorAndPluginNames()
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{
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$plugins = [];
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$dirPath = plugins_path();
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if (!File::isDirectory($dirPath)) {
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return $plugins;
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}
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$it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dirPath));
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$it->setMaxDepth(2);
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$it->rewind();
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while ($it->valid()) {
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if (($it->getDepth() > 1) && $it->isFile() && (strtolower($it->getFilename()) == "plugin.php")) {
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$filePath = dirname($it->getPathname());
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$pluginName = basename($filePath);
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$vendorName = basename(dirname($filePath));
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$plugins[$vendorName][$pluginName] = $filePath;
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}
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$it->next();
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}
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return $plugins;
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}
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/**
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* Returns a plugin identifier from a Plugin class name or object
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* @param mixed Plugin class name or object
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* @return string Identifier in format of Vendor.Plugin
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*/
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public function getIdentifier($namespace)
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{
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$namespace = Str::normalizeClassName($namespace);
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if (strpos($namespace, '\\') === null) {
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return $namespace;
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}
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$parts = explode('\\', $namespace);
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$slice = array_slice($parts, 1, 2);
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$namespace = implode('.', $slice);
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return $namespace;
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}
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/**
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* Takes a human plugin code (acme.blog) and makes it authentic (Acme.Blog)
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* @param string $id
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* @return string
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*/
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public function normalizeIdentifier($identifier)
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{
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foreach ($this->plugins as $id => $object) {
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if (strtolower($id) == strtolower($identifier)) {
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return $id;
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}
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}
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return $identifier;
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}
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//
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// Disability
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//
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public function clearDisabledCache()
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{
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File::delete($this->metaFile);
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$this->disabledPlugins = [];
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}
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/**
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* Loads all disables plugins from the meta file.
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*/
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protected function loadDisabled()
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{
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$path = $this->metaFile;
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if (($configDisabled = Config::get('cms.disablePlugins')) && is_array($configDisabled)) {
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foreach ($configDisabled as $disabled) {
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$this->disabledPlugins[$disabled] = true;
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}
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}
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if (File::exists($path)) {
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$disabled = json_decode(File::get($path), true);
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$this->disabledPlugins = array_merge($this->disabledPlugins, $disabled);
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}
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else {
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$this->writeDisabled();
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}
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}
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/**
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* Determines if a plugin is disabled by looking at the meta information
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* or the application configuration.
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* @return boolean
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*/
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public function isDisabled($id)
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{
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$code = $this->getIdentifier($id);
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if (array_key_exists($code, $this->disabledPlugins)) {
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return true;
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}
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}
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/**
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* Write the disabled plugins to a meta file.
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*/
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protected function writeDisabled()
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{
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$path = $this->metaFile;
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File::put($path, json_encode($this->disabledPlugins));
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}
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/**
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* Disables a single plugin in the system.
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* @param string $id Plugin code/namespace
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* @param bool $user Set to true if disabled by the user
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*/
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public function disablePlugin($id, $isUser = false)
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{
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$code = $this->getIdentifier($id);
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if (array_key_exists($code, $this->disabledPlugins)) {
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return false;
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}
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$this->disabledPlugins[$code] = $isUser;
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$this->writeDisabled();
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if ($pluginObj = $this->findByIdentifier($code)) {
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$pluginObj->disabled = true;
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}
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return true;
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}
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/**
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* Enables a single plugin in the system.
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* @param string $id Plugin code/namespace
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* @param bool $user Set to true if enabled by the user
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*/
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public function enablePlugin($id, $isUser = false)
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{
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$code = $this->getIdentifier($id);
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if (!array_key_exists($code, $this->disabledPlugins)) {
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return false;
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}
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// Prevent system from enabling plugins disabled by the user
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if (!$isUser && $this->disabledPlugins[$code] === true) {
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return false;
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}
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unset($this->disabledPlugins[$code]);
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$this->writeDisabled();
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if ($pluginObj = $this->findByIdentifier($code)) {
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$pluginObj->disabled = false;
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}
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return true;
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}
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//
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// Dependencies
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//
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/**
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* Scans the system plugins to locate any dependencies
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* that are not currently installed.
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*/
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public function findMissingDependencies()
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{
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$missing = [];
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foreach ($this->plugins as $id => $plugin) {
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if (!$required = $this->getDependencies($plugin)) {
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continue;
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}
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foreach ($required as $require) {
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if ($this->hasPlugin($require)) {
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continue;
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}
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$missing[] = $require;
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}
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}
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return $missing;
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}
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/**
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* Cross checks all plugins and their dependancies, if not met plugins
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* are disabled and vice versa.
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*/
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protected function loadDependencies()
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{
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foreach ($this->plugins as $id => $plugin) {
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if (!$required = $this->getDependencies($plugin)) {
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continue;
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}
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$disable = false;
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foreach ($required as $require) {
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if (!$this->hasPlugin($require)) {
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$disable = true;
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}
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elseif (($pluginObj = $this->findByIdentifier($require)) && $pluginObj->disabled) {
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$disable = true;
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}
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}
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if ($disable) {
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$this->disablePlugin($id);
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}
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else {
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$this->enablePlugin($id);
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}
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}
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}
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/**
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* Returns the plugin identifiers that are required by the supplied plugin.
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* @param string $plugin Plugin identifier, object or class
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* @return array
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*/
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public function getDependencies($plugin)
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{
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if (is_string($plugin) && (!$plugin = $this->findByIdentifier($plugin))) {
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return false;
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}
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if (!isset($plugin->require) || !$plugin->require) {
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return null;
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}
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return is_array($plugin->require) ? $plugin->require : [$plugin->require];
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}
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/**
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* Sorts a collection of plugins, in the order that they should be actioned,
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* according to their given dependencies. Least dependent come first.
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* @param array $plugins Object collection to sort, or null to sort all.
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* @return array Collection of sorted plugin identifiers
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*/
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public function sortByDependencies($plugins = null)
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{
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if (!is_array($plugins)) {
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$plugins = $this->getPlugins();
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}
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$result = [];
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$checklist = $plugins;
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$loopCount = 0;
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while (count($checklist)) {
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if (++$loopCount > 999) {
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throw new ApplicationException('Too much recursion');
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}
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foreach ($checklist as $code => $plugin) {
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/*
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* Get dependencies and remove any aliens
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*/
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$depends = $this->getDependencies($plugin) ?: [];
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$depends = array_filter($depends, function ($pluginCode) use ($plugins) {
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return isset($plugins[$pluginCode]);
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});
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/*
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* No dependencies
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*/
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if (!$depends) {
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array_push($result, $code);
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unset($checklist[$code]);
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continue;
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}
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/*
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* Find dependencies that have not been checked
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*/
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$depends = array_diff($depends, $result);
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if (count($depends) > 0) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* All dependencies are checked
|
|
*/
|
|
array_push($result, $code);
|
|
unset($checklist[$code]);
|
|
}
|
|
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
}
|