nextcloud / server

lib/private/App/AppManager.php

Indentation +787 added lines, -787 removed lines

@@ -62,791 +62,791 @@
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 class AppManager implements IAppManager {
-	/**
-	 * Apps with these types can not be enabled for certain groups only
-	 * @var string[]
-	 */
-	protected $protectedAppTypes = [
-		'filesystem',
-		'prelogin',
-		'authentication',
-		'logging',
-		'prevent_group_restriction',
-	];
-
-	private IUserSession $userSession;
-	private IConfig $config;
-	private AppConfig $appConfig;
-	private IGroupManager $groupManager;
-	private ICacheFactory $memCacheFactory;
-	private EventDispatcherInterface $legacyDispatcher;
-	private IEventDispatcher $dispatcher;
-	private LoggerInterface $logger;
-
-	/** @var string[] $appId => $enabled */
-	private array $installedAppsCache = [];
-
-	/** @var string[]|null */
-	private ?array $shippedApps = null;
-
-	private array $alwaysEnabled = [];
-	private array $defaultEnabled = [];
-
-	/** @var array */
-	private array $appInfos = [];
-
-	/** @var array */
-	private array $appVersions = [];
-
-	/** @var array */
-	private array $autoDisabledApps = [];
-	private array $appTypes = [];
-
-	/** @var array<string, true> */
-	private array $loadedApps = [];
-
-	public function __construct(IUserSession $userSession,
-								IConfig $config,
-								AppConfig $appConfig,
-								IGroupManager $groupManager,
-								ICacheFactory $memCacheFactory,
-								EventDispatcherInterface $legacyDispatcher,
-								IEventDispatcher $dispatcher,
-								LoggerInterface $logger) {
-		$this->userSession = $userSession;
-		$this->config = $config;
-		$this->appConfig = $appConfig;
-		$this->groupManager = $groupManager;
-		$this->memCacheFactory = $memCacheFactory;
-		$this->legacyDispatcher = $legacyDispatcher;
-		$this->dispatcher = $dispatcher;
-		$this->logger = $logger;
-	}
-
-	/**
-	 * @return string[] $appId => $enabled
-	 */
-	private function getInstalledAppsValues(): array {
-		if (!$this->installedAppsCache) {
-			$values = $this->appConfig->getValues(false, 'enabled');
-
-			$alwaysEnabledApps = $this->getAlwaysEnabledApps();
-			foreach ($alwaysEnabledApps as $appId) {
-				$values[$appId] = 'yes';
-			}
-
-			$this->installedAppsCache = array_filter($values, function ($value) {
-				return $value !== 'no';
-			});
-			ksort($this->installedAppsCache);
-		}
-		return $this->installedAppsCache;
-	}
-
-	/**
-	 * List all installed apps
-	 *
-	 * @return string[]
-	 */
-	public function getInstalledApps() {
-		return array_keys($this->getInstalledAppsValues());
-	}
-
-	/**
-	 * List all apps enabled for a user
-	 *
-	 * @param \OCP\IUser $user
-	 * @return string[]
-	 */
-	public function getEnabledAppsForUser(IUser $user) {
-		$apps = $this->getInstalledAppsValues();
-		$appsForUser = array_filter($apps, function ($enabled) use ($user) {
-			return $this->checkAppForUser($enabled, $user);
-		});
-		return array_keys($appsForUser);
-	}
-
-	/**
-	 * @param IGroup $group
-	 * @return array
-	 */
-	public function getEnabledAppsForGroup(IGroup $group): array {
-		$apps = $this->getInstalledAppsValues();
-		$appsForGroups = array_filter($apps, function ($enabled) use ($group) {
-			return $this->checkAppForGroups($enabled, $group);
-		});
-		return array_keys($appsForGroups);
-	}
-
-	/**
-	 * Loads all apps
-	 *
-	 * @param string[] $types
-	 * @return bool
-	 *
-	 * This function walks through the Nextcloud directory and loads all apps
-	 * it can find. A directory contains an app if the file /appinfo/info.xml
-	 * exists.
-	 *
-	 * if $types is set to non-empty array, only apps of those types will be loaded
-	 */
-	public function loadApps(array $types = []): bool {
-		if ($this->config->getSystemValueBool('maintenance', false)) {
-			return false;
-		}
-		// Load the enabled apps here
-		$apps = \OC_App::getEnabledApps();
-
-		// Add each apps' folder as allowed class path
-		foreach ($apps as $app) {
-			// If the app is already loaded then autoloading it makes no sense
-			if (!$this->isAppLoaded($app)) {
-				$path = \OC_App::getAppPath($app);
-				if ($path !== false) {
-					\OC_App::registerAutoloading($app, $path);
-				}
-			}
-		}
-
-		// prevent app.php from printing output
-		ob_start();
-		foreach ($apps as $app) {
-			if (!$this->isAppLoaded($app) && ($types === [] || $this->isType($app, $types))) {
-				try {
-					$this->loadApp($app);
-				} catch (\Throwable $e) {
-					$this->logger->emergency('Error during app loading: ' . $e->getMessage(), [
-						'exception' => $e,
-						'app' => $app,
-					]);
-				}
-			}
-		}
-		ob_end_clean();
-
-		return true;
-	}
-
-	/**
-	 * check if an app is of a specific type
-	 *
-	 * @param string $app
-	 * @param array $types
-	 * @return bool
-	 */
-	public function isType(string $app, array $types): bool {
-		$appTypes = $this->getAppTypes($app);
-		foreach ($types as $type) {
-			if (in_array($type, $appTypes, true)) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * get the types of an app
-	 *
-	 * @param string $app
-	 * @return string[]
-	 */
-	private function getAppTypes(string $app): array {
-		//load the cache
-		if (count($this->appTypes) === 0) {
-			$this->appTypes = $this->appConfig->getValues(false, 'types') ?: [];
-		}
-
-		if (isset($this->appTypes[$app])) {
-			return explode(',', $this->appTypes[$app]);
-		}
-
-		return [];
-	}
-
-	/**
-	 * @return array
-	 */
-	public function getAutoDisabledApps(): array {
-		return $this->autoDisabledApps;
-	}
-
-	/**
-	 * @param string $appId
-	 * @return array
-	 */
-	public function getAppRestriction(string $appId): array {
-		$values = $this->getInstalledAppsValues();
-
-		if (!isset($values[$appId])) {
-			return [];
-		}
-
-		if ($values[$appId] === 'yes' || $values[$appId] === 'no') {
-			return [];
-		}
-		return json_decode($values[$appId], true);
-	}
-
-
-	/**
-	 * Check if an app is enabled for user
-	 *
-	 * @param string $appId
-	 * @param \OCP\IUser $user (optional) if not defined, the currently logged in user will be used
-	 * @return bool
-	 */
-	public function isEnabledForUser($appId, $user = null) {
-		if ($this->isAlwaysEnabled($appId)) {
-			return true;
-		}
-		if ($user === null) {
-			$user = $this->userSession->getUser();
-		}
-		$installedApps = $this->getInstalledAppsValues();
-		if (isset($installedApps[$appId])) {
-			return $this->checkAppForUser($installedApps[$appId], $user);
-		} else {
-			return false;
-		}
-	}
-
-	private function checkAppForUser(string $enabled, ?IUser $user): bool {
-		if ($enabled === 'yes') {
-			return true;
-		} elseif ($user === null) {
-			return false;
-		} else {
-			if (empty($enabled)) {
-				return false;
-			}
-
-			$groupIds = json_decode($enabled);
-
-			if (!is_array($groupIds)) {
-				$jsonError = json_last_error();
-				$this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError);
-				return false;
-			}
-
-			$userGroups = $this->groupManager->getUserGroupIds($user);
-			foreach ($userGroups as $groupId) {
-				if (in_array($groupId, $groupIds, true)) {
-					return true;
-				}
-			}
-			return false;
-		}
-	}
-
-	private function checkAppForGroups(string $enabled, IGroup $group): bool {
-		if ($enabled === 'yes') {
-			return true;
-		} else {
-			if (empty($enabled)) {
-				return false;
-			}
-
-			$groupIds = json_decode($enabled);
-
-			if (!is_array($groupIds)) {
-				$jsonError = json_last_error();
-				$this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError);
-				return false;
-			}
-
-			return in_array($group->getGID(), $groupIds);
-		}
-	}
-
-	/**
-	 * Check if an app is enabled in the instance
-	 *
-	 * Notice: This actually checks if the app is enabled and not only if it is installed.
-	 *
-	 * @param string $appId
-	 * @param IGroup[]|String[] $groups
-	 * @return bool
-	 */
-	public function isInstalled($appId) {
-		$installedApps = $this->getInstalledAppsValues();
-		return isset($installedApps[$appId]);
-	}
-
-	public function ignoreNextcloudRequirementForApp(string $appId): void {
-		$ignoreMaxApps = $this->config->getSystemValue('app_install_overwrite', []);
-		if (!in_array($appId, $ignoreMaxApps, true)) {
-			$ignoreMaxApps[] = $appId;
-			$this->config->setSystemValue('app_install_overwrite', $ignoreMaxApps);
-		}
-	}
-
-	public function loadApp(string $app): void {
-		if (isset($this->loadedApps[$app])) {
-			return;
-		}
-		$this->loadedApps[$app] = true;
-		$appPath = \OC_App::getAppPath($app);
-		if ($appPath === false) {
-			return;
-		}
-		$eventLogger = \OC::$server->get(\OCP\Diagnostics\IEventLogger::class);
-		$eventLogger->start("bootstrap:load_app:$app", "Load $app");
-
-		// in case someone calls loadApp() directly
-		\OC_App::registerAutoloading($app, $appPath);
-
-		/** @var Coordinator $coordinator */
-		$coordinator = \OC::$server->get(Coordinator::class);
-		$isBootable = $coordinator->isBootable($app);
-
-		$hasAppPhpFile = is_file($appPath . '/appinfo/app.php');
-
-		$eventLogger = \OC::$server->get(IEventLogger::class);
-		$eventLogger->start('bootstrap:load_app_' . $app, 'Load app: ' . $app);
-		if ($isBootable && $hasAppPhpFile) {
-			$this->logger->error('/appinfo/app.php is not loaded when \OCP\AppFramework\Bootstrap\IBootstrap on the application class is used. Migrate everything from app.php to the Application class.', [
-				'app' => $app,
-			]);
-		} elseif ($hasAppPhpFile) {
-			$eventLogger->start("bootstrap:load_app:$app:app.php", "Load legacy app.php app $app");
-			$this->logger->debug('/appinfo/app.php is deprecated, use \OCP\AppFramework\Bootstrap\IBootstrap on the application class instead.', [
-				'app' => $app,
-			]);
-			try {
-				self::requireAppFile($appPath);
-			} catch (\Throwable $ex) {
-				if ($ex instanceof ServerNotAvailableException) {
-					throw $ex;
-				}
-				if (!$this->isShipped($app) && !$this->isType($app, ['authentication'])) {
-					$this->logger->error("App $app threw an error during app.php load and will be disabled: " . $ex->getMessage(), [
-						'exception' => $ex,
-					]);
-
-					// Only disable apps which are not shipped and that are not authentication apps
-					$this->disableApp($app, true);
-				} else {
-					$this->logger->error("App $app threw an error during app.php load: " . $ex->getMessage(), [
-						'exception' => $ex,
-					]);
-				}
-			}
-			$eventLogger->end("bootstrap:load_app:$app:app.php");
-		}
-
-		$coordinator->bootApp($app);
-
-		$eventLogger->start("bootstrap:load_app:$app:info", "Load info.xml for $app and register any services defined in it");
-		$info = $this->getAppInfo($app);
-		if (!empty($info['activity'])) {
-			$activityManager = \OC::$server->get(IActivityManager::class);
-			if (!empty($info['activity']['filters'])) {
-				foreach ($info['activity']['filters'] as $filter) {
-					$activityManager->registerFilter($filter);
-				}
-			}
-			if (!empty($info['activity']['settings'])) {
-				foreach ($info['activity']['settings'] as $setting) {
-					$activityManager->registerSetting($setting);
-				}
-			}
-			if (!empty($info['activity']['providers'])) {
-				foreach ($info['activity']['providers'] as $provider) {
-					$activityManager->registerProvider($provider);
-				}
-			}
-		}
-
-		if (!empty($info['settings'])) {
-			$settingsManager = \OC::$server->get(ISettingsManager::class);
-			if (!empty($info['settings']['admin'])) {
-				foreach ($info['settings']['admin'] as $setting) {
-					$settingsManager->registerSetting('admin', $setting);
-				}
-			}
-			if (!empty($info['settings']['admin-section'])) {
-				foreach ($info['settings']['admin-section'] as $section) {
-					$settingsManager->registerSection('admin', $section);
-				}
-			}
-			if (!empty($info['settings']['personal'])) {
-				foreach ($info['settings']['personal'] as $setting) {
-					$settingsManager->registerSetting('personal', $setting);
-				}
-			}
-			if (!empty($info['settings']['personal-section'])) {
-				foreach ($info['settings']['personal-section'] as $section) {
-					$settingsManager->registerSection('personal', $section);
-				}
-			}
-		}
-
-		if (!empty($info['collaboration']['plugins'])) {
-			// deal with one or many plugin entries
-			$plugins = isset($info['collaboration']['plugins']['plugin']['@value']) ?
-				[$info['collaboration']['plugins']['plugin']] : $info['collaboration']['plugins']['plugin'];
-			$collaboratorSearch = null;
-			$autoCompleteManager = null;
-			foreach ($plugins as $plugin) {
-				if ($plugin['@attributes']['type'] === 'collaborator-search') {
-					$pluginInfo = [
-						'shareType' => $plugin['@attributes']['share-type'],
-						'class' => $plugin['@value'],
-					];
-					$collaboratorSearch ??= \OC::$server->get(ICollaboratorSearch::class);
-					$collaboratorSearch->registerPlugin($pluginInfo);
-				} elseif ($plugin['@attributes']['type'] === 'autocomplete-sort') {
-					$autoCompleteManager ??= \OC::$server->get(IAutoCompleteManager::class);
-					$autoCompleteManager->registerSorter($plugin['@value']);
-				}
-			}
-		}
-		$eventLogger->end("bootstrap:load_app:$app:info");
-
-		$eventLogger->end("bootstrap:load_app:$app");
-	}
-	/**
-	 * Check if an app is loaded
-	 * @param string $app app id
-	 * @since 26.0.0
-	 */
-	public function isAppLoaded(string $app): bool {
-		return isset($this->loadedApps[$app]);
-	}
-
-	/**
-	 * Load app.php from the given app
-	 *
-	 * @param string $app app name
-	 * @throws \Error
-	 */
-	private static function requireAppFile(string $app): void {
-		// encapsulated here to avoid variable scope conflicts
-		require_once $app . '/appinfo/app.php';
-	}
-
-	/**
-	 * Enable an app for every user
-	 *
-	 * @param string $appId
-	 * @param bool $forceEnable
-	 * @throws AppPathNotFoundException
-	 */
-	public function enableApp(string $appId, bool $forceEnable = false): void {
-		// Check if app exists
-		$this->getAppPath($appId);
-
-		if ($forceEnable) {
-			$this->ignoreNextcloudRequirementForApp($appId);
-		}
-
-		$this->installedAppsCache[$appId] = 'yes';
-		$this->appConfig->setValue($appId, 'enabled', 'yes');
-		$this->dispatcher->dispatchTyped(new AppEnableEvent($appId));
-		$this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_ENABLE, new ManagerEvent(
-			ManagerEvent::EVENT_APP_ENABLE, $appId
-		));
-		$this->clearAppsCache();
-	}
-
-	/**
-	 * Whether a list of types contains a protected app type
-	 *
-	 * @param string[] $types
-	 * @return bool
-	 */
-	public function hasProtectedAppType($types) {
-		if (empty($types)) {
-			return false;
-		}
-
-		$protectedTypes = array_intersect($this->protectedAppTypes, $types);
-		return !empty($protectedTypes);
-	}
-
-	/**
-	 * Enable an app only for specific groups
-	 *
-	 * @param string $appId
-	 * @param IGroup[] $groups
-	 * @param bool $forceEnable
-	 * @throws \InvalidArgumentException if app can't be enabled for groups
-	 * @throws AppPathNotFoundException
-	 */
-	public function enableAppForGroups(string $appId, array $groups, bool $forceEnable = false): void {
-		// Check if app exists
-		$this->getAppPath($appId);
-
-		$info = $this->getAppInfo($appId);
-		if (!empty($info['types']) && $this->hasProtectedAppType($info['types'])) {
-			throw new \InvalidArgumentException("$appId can't be enabled for groups.");
-		}
-
-		if ($forceEnable) {
-			$this->ignoreNextcloudRequirementForApp($appId);
-		}
-
-		/** @var string[] $groupIds */
-		$groupIds = array_map(function ($group) {
-			/** @var IGroup $group */
-			return ($group instanceof IGroup)
-				? $group->getGID()
-				: $group;
-		}, $groups);
-
-		$this->installedAppsCache[$appId] = json_encode($groupIds);
-		$this->appConfig->setValue($appId, 'enabled', json_encode($groupIds));
-		$this->dispatcher->dispatchTyped(new AppEnableEvent($appId, $groupIds));
-		$this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_ENABLE_FOR_GROUPS, new ManagerEvent(
-			ManagerEvent::EVENT_APP_ENABLE_FOR_GROUPS, $appId, $groups
-		));
-		$this->clearAppsCache();
-	}
-
-	/**
-	 * Disable an app for every user
-	 *
-	 * @param string $appId
-	 * @param bool $automaticDisabled
-	 * @throws \Exception if app can't be disabled
-	 */
-	public function disableApp($appId, $automaticDisabled = false) {
-		if ($this->isAlwaysEnabled($appId)) {
-			throw new \Exception("$appId can't be disabled.");
-		}
-
-		if ($automaticDisabled) {
-			$previousSetting = $this->appConfig->getValue($appId, 'enabled', 'yes');
-			if ($previousSetting !== 'yes' && $previousSetting !== 'no') {
-				$previousSetting = json_decode($previousSetting, true);
-			}
-			$this->autoDisabledApps[$appId] = $previousSetting;
-		}
-
-		unset($this->installedAppsCache[$appId]);
-		$this->appConfig->setValue($appId, 'enabled', 'no');
-
-		// run uninstall steps
-		$appData = $this->getAppInfo($appId);
-		if (!is_null($appData)) {
-			\OC_App::executeRepairSteps($appId, $appData['repair-steps']['uninstall']);
-		}
-
-		$this->dispatcher->dispatchTyped(new AppDisableEvent($appId));
-		$this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_DISABLE, new ManagerEvent(
-			ManagerEvent::EVENT_APP_DISABLE, $appId
-		));
-		$this->clearAppsCache();
-	}
-
-	/**
-	 * Get the directory for the given app.
-	 *
-	 * @param string $appId
-	 * @return string
-	 * @throws AppPathNotFoundException if app folder can't be found
-	 */
-	public function getAppPath($appId) {
-		$appPath = \OC_App::getAppPath($appId);
-		if ($appPath === false) {
-			throw new AppPathNotFoundException('Could not find path for ' . $appId);
-		}
-		return $appPath;
-	}
-
-	/**
-	 * Get the web path for the given app.
-	 *
-	 * @param string $appId
-	 * @return string
-	 * @throws AppPathNotFoundException if app path can't be found
-	 */
-	public function getAppWebPath(string $appId): string {
-		$appWebPath = \OC_App::getAppWebPath($appId);
-		if ($appWebPath === false) {
-			throw new AppPathNotFoundException('Could not find web path for ' . $appId);
-		}
-		return $appWebPath;
-	}
-
-	/**
-	 * Clear the cached list of apps when enabling/disabling an app
-	 */
-	public function clearAppsCache() {
-		$this->appInfos = [];
-	}
-
-	/**
-	 * Returns a list of apps that need upgrade
-	 *
-	 * @param string $version Nextcloud version as array of version components
-	 * @return array list of app info from apps that need an upgrade
-	 *
-	 * @internal
-	 */
-	public function getAppsNeedingUpgrade($version) {
-		$appsToUpgrade = [];
-		$apps = $this->getInstalledApps();
-		foreach ($apps as $appId) {
-			$appInfo = $this->getAppInfo($appId);
-			$appDbVersion = $this->appConfig->getValue($appId, 'installed_version');
-			if ($appDbVersion
-				&& isset($appInfo['version'])
-				&& version_compare($appInfo['version'], $appDbVersion, '>')
-				&& \OC_App::isAppCompatible($version, $appInfo)
-			) {
-				$appsToUpgrade[] = $appInfo;
-			}
-		}
-
-		return $appsToUpgrade;
-	}
-
-	/**
-	 * Returns the app information from "appinfo/info.xml".
-	 *
-	 * @param string $appId app id
-	 *
-	 * @param bool $path
-	 * @param null $lang
-	 * @return array|null app info
-	 */
-	public function getAppInfo(string $appId, bool $path = false, $lang = null) {
-		if ($path) {
-			$file = $appId;
-		} else {
-			if ($lang === null && isset($this->appInfos[$appId])) {
-				return $this->appInfos[$appId];
-			}
-			try {
-				$appPath = $this->getAppPath($appId);
-			} catch (AppPathNotFoundException $e) {
-				return null;
-			}
-			$file = $appPath . '/appinfo/info.xml';
-		}
-
-		$parser = new InfoParser($this->memCacheFactory->createLocal('core.appinfo'));
-		$data = $parser->parse($file);
-
-		if (is_array($data)) {
-			$data = \OC_App::parseAppInfo($data, $lang);
-		}
-
-		if ($lang === null) {
-			$this->appInfos[$appId] = $data;
-		}
-
-		return $data;
-	}
-
-	public function getAppVersion(string $appId, bool $useCache = true): string {
-		if (!$useCache || !isset($this->appVersions[$appId])) {
-			$appInfo = $this->getAppInfo($appId);
-			$this->appVersions[$appId] = ($appInfo !== null && isset($appInfo['version'])) ? $appInfo['version'] : '0';
-		}
-		return $this->appVersions[$appId];
-	}
-
-	/**
-	 * Returns a list of apps incompatible with the given version
-	 *
-	 * @param string $version Nextcloud version as array of version components
-	 *
-	 * @return array list of app info from incompatible apps
-	 *
-	 * @internal
-	 */
-	public function getIncompatibleApps(string $version): array {
-		$apps = $this->getInstalledApps();
-		$incompatibleApps = [];
-		foreach ($apps as $appId) {
-			$info = $this->getAppInfo($appId);
-			if ($info === null) {
-				$incompatibleApps[] = ['id' => $appId, 'name' => $appId];
-			} elseif (!\OC_App::isAppCompatible($version, $info)) {
-				$incompatibleApps[] = $info;
-			}
-		}
-		return $incompatibleApps;
-	}
-
-	/**
-	 * @inheritdoc
-	 * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::isShipped()
-	 */
-	public function isShipped($appId) {
-		$this->loadShippedJson();
-		return in_array($appId, $this->shippedApps, true);
-	}
-
-	private function isAlwaysEnabled(string $appId): bool {
-		$alwaysEnabled = $this->getAlwaysEnabledApps();
-		return in_array($appId, $alwaysEnabled, true);
-	}
-
-	/**
-	 * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::loadShippedJson()
-	 * @throws \Exception
-	 */
-	private function loadShippedJson(): void {
-		if ($this->shippedApps === null) {
-			$shippedJson = \OC::$SERVERROOT . '/core/shipped.json';
-			if (!file_exists($shippedJson)) {
-				throw new \Exception("File not found: $shippedJson");
-			}
-			$content = json_decode(file_get_contents($shippedJson), true);
-			$this->shippedApps = $content['shippedApps'];
-			$this->alwaysEnabled = $content['alwaysEnabled'];
-			$this->defaultEnabled = $content['defaultEnabled'];
-		}
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function getAlwaysEnabledApps() {
-		$this->loadShippedJson();
-		return $this->alwaysEnabled;
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function isDefaultEnabled(string $appId): bool {
-		return (in_array($appId, $this->getDefaultEnabledApps()));
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function getDefaultEnabledApps():array {
-		$this->loadShippedJson();
-
-		return $this->defaultEnabled;
-	}
-
-	public function getDefaultAppForUser(?IUser $user = null): string {
-		// Set fallback to always-enabled files app
-		$appId = 'files';
-		$defaultApps = explode(',', $this->config->getSystemValueString('defaultapp', 'dashboard,files'));
-
-		$user ??= $this->userSession->getUser();
-
-		if ($user !== null) {
-			$userDefaultApps = explode(',', $this->config->getUserValue($user->getUID(), 'core', 'defaultapp'));
-			$defaultApps = array_filter(array_merge($userDefaultApps, $defaultApps));
-		}
-
-		// Find the first app that is enabled for the current user
-		foreach ($defaultApps as $defaultApp) {
-			$defaultApp = \OC_App::cleanAppId(strip_tags($defaultApp));
-			if ($this->isEnabledForUser($defaultApp, $user)) {
-				$appId = $defaultApp;
-				break;
-			}
-		}
-
-		return $appId;
-	}
+    /**
+     * Apps with these types can not be enabled for certain groups only
+     * @var string[]
+     */
+    protected $protectedAppTypes = [
+        'filesystem',
+        'prelogin',
+        'authentication',
+        'logging',
+        'prevent_group_restriction',
+    ];
+
+    private IUserSession $userSession;
+    private IConfig $config;
+    private AppConfig $appConfig;
+    private IGroupManager $groupManager;
+    private ICacheFactory $memCacheFactory;
+    private EventDispatcherInterface $legacyDispatcher;
+    private IEventDispatcher $dispatcher;
+    private LoggerInterface $logger;
+
+    /** @var string[] $appId => $enabled */
+    private array $installedAppsCache = [];
+
+    /** @var string[]|null */
+    private ?array $shippedApps = null;
+
+    private array $alwaysEnabled = [];
+    private array $defaultEnabled = [];
+
+    /** @var array */
+    private array $appInfos = [];
+
+    /** @var array */
+    private array $appVersions = [];
+
+    /** @var array */
+    private array $autoDisabledApps = [];
+    private array $appTypes = [];
+
+    /** @var array<string, true> */
+    private array $loadedApps = [];
+
+    public function __construct(IUserSession $userSession,
+                                IConfig $config,
+                                AppConfig $appConfig,
+                                IGroupManager $groupManager,
+                                ICacheFactory $memCacheFactory,
+                                EventDispatcherInterface $legacyDispatcher,
+                                IEventDispatcher $dispatcher,
+                                LoggerInterface $logger) {
+        $this->userSession = $userSession;
+        $this->config = $config;
+        $this->appConfig = $appConfig;
+        $this->groupManager = $groupManager;
+        $this->memCacheFactory = $memCacheFactory;
+        $this->legacyDispatcher = $legacyDispatcher;
+        $this->dispatcher = $dispatcher;
+        $this->logger = $logger;
+    }
+
+    /**
+     * @return string[] $appId => $enabled
+     */
+    private function getInstalledAppsValues(): array {
+        if (!$this->installedAppsCache) {
+            $values = $this->appConfig->getValues(false, 'enabled');
+
+            $alwaysEnabledApps = $this->getAlwaysEnabledApps();
+            foreach ($alwaysEnabledApps as $appId) {
+                $values[$appId] = 'yes';
+            }
+
+            $this->installedAppsCache = array_filter($values, function ($value) {
+                return $value !== 'no';
+            });
+            ksort($this->installedAppsCache);
+        }
+        return $this->installedAppsCache;
+    }
+
+    /**
+     * List all installed apps
+     *
+     * @return string[]
+     */
+    public function getInstalledApps() {
+        return array_keys($this->getInstalledAppsValues());
+    }
+
+    /**
+     * List all apps enabled for a user
+     *
+     * @param \OCP\IUser $user
+     * @return string[]
+     */
+    public function getEnabledAppsForUser(IUser $user) {
+        $apps = $this->getInstalledAppsValues();
+        $appsForUser = array_filter($apps, function ($enabled) use ($user) {
+            return $this->checkAppForUser($enabled, $user);
+        });
+        return array_keys($appsForUser);
+    }
+
+    /**
+     * @param IGroup $group
+     * @return array
+     */
+    public function getEnabledAppsForGroup(IGroup $group): array {
+        $apps = $this->getInstalledAppsValues();
+        $appsForGroups = array_filter($apps, function ($enabled) use ($group) {
+            return $this->checkAppForGroups($enabled, $group);
+        });
+        return array_keys($appsForGroups);
+    }
+
+    /**
+     * Loads all apps
+     *
+     * @param string[] $types
+     * @return bool
+     *
+     * This function walks through the Nextcloud directory and loads all apps
+     * it can find. A directory contains an app if the file /appinfo/info.xml
+     * exists.
+     *
+     * if $types is set to non-empty array, only apps of those types will be loaded
+     */
+    public function loadApps(array $types = []): bool {
+        if ($this->config->getSystemValueBool('maintenance', false)) {
+            return false;
+        }
+        // Load the enabled apps here
+        $apps = \OC_App::getEnabledApps();
+
+        // Add each apps' folder as allowed class path
+        foreach ($apps as $app) {
+            // If the app is already loaded then autoloading it makes no sense
+            if (!$this->isAppLoaded($app)) {
+                $path = \OC_App::getAppPath($app);
+                if ($path !== false) {
+                    \OC_App::registerAutoloading($app, $path);
+                }
+            }
+        }
+
+        // prevent app.php from printing output
+        ob_start();
+        foreach ($apps as $app) {
+            if (!$this->isAppLoaded($app) && ($types === [] || $this->isType($app, $types))) {
+                try {
+                    $this->loadApp($app);
+                } catch (\Throwable $e) {
+                    $this->logger->emergency('Error during app loading: ' . $e->getMessage(), [
+                        'exception' => $e,
+                        'app' => $app,
+                    ]);
+                }
+            }
+        }
+        ob_end_clean();
+
+        return true;
+    }
+
+    /**
+     * check if an app is of a specific type
+     *
+     * @param string $app
+     * @param array $types
+     * @return bool
+     */
+    public function isType(string $app, array $types): bool {
+        $appTypes = $this->getAppTypes($app);
+        foreach ($types as $type) {
+            if (in_array($type, $appTypes, true)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * get the types of an app
+     *
+     * @param string $app
+     * @return string[]
+     */
+    private function getAppTypes(string $app): array {
+        //load the cache
+        if (count($this->appTypes) === 0) {
+            $this->appTypes = $this->appConfig->getValues(false, 'types') ?: [];
+        }
+
+        if (isset($this->appTypes[$app])) {
+            return explode(',', $this->appTypes[$app]);
+        }
+
+        return [];
+    }
+
+    /**
+     * @return array
+     */
+    public function getAutoDisabledApps(): array {
+        return $this->autoDisabledApps;
+    }
+
+    /**
+     * @param string $appId
+     * @return array
+     */
+    public function getAppRestriction(string $appId): array {
+        $values = $this->getInstalledAppsValues();
+
+        if (!isset($values[$appId])) {
+            return [];
+        }
+
+        if ($values[$appId] === 'yes' || $values[$appId] === 'no') {
+            return [];
+        }
+        return json_decode($values[$appId], true);
+    }
+
+
+    /**
+     * Check if an app is enabled for user
+     *
+     * @param string $appId
+     * @param \OCP\IUser $user (optional) if not defined, the currently logged in user will be used
+     * @return bool
+     */
+    public function isEnabledForUser($appId, $user = null) {
+        if ($this->isAlwaysEnabled($appId)) {
+            return true;
+        }
+        if ($user === null) {
+            $user = $this->userSession->getUser();
+        }
+        $installedApps = $this->getInstalledAppsValues();
+        if (isset($installedApps[$appId])) {
+            return $this->checkAppForUser($installedApps[$appId], $user);
+        } else {
+            return false;
+        }
+    }
+
+    private function checkAppForUser(string $enabled, ?IUser $user): bool {
+        if ($enabled === 'yes') {
+            return true;
+        } elseif ($user === null) {
+            return false;
+        } else {
+            if (empty($enabled)) {
+                return false;
+            }
+
+            $groupIds = json_decode($enabled);
+
+            if (!is_array($groupIds)) {
+                $jsonError = json_last_error();
+                $this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError);
+                return false;
+            }
+
+            $userGroups = $this->groupManager->getUserGroupIds($user);
+            foreach ($userGroups as $groupId) {
+                if (in_array($groupId, $groupIds, true)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    private function checkAppForGroups(string $enabled, IGroup $group): bool {
+        if ($enabled === 'yes') {
+            return true;
+        } else {
+            if (empty($enabled)) {
+                return false;
+            }
+
+            $groupIds = json_decode($enabled);
+
+            if (!is_array($groupIds)) {
+                $jsonError = json_last_error();
+                $this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError);
+                return false;
+            }
+
+            return in_array($group->getGID(), $groupIds);
+        }
+    }
+
+    /**
+     * Check if an app is enabled in the instance
+     *
+     * Notice: This actually checks if the app is enabled and not only if it is installed.
+     *
+     * @param string $appId
+     * @param IGroup[]|String[] $groups
+     * @return bool
+     */
+    public function isInstalled($appId) {
+        $installedApps = $this->getInstalledAppsValues();
+        return isset($installedApps[$appId]);
+    }
+
+    public function ignoreNextcloudRequirementForApp(string $appId): void {
+        $ignoreMaxApps = $this->config->getSystemValue('app_install_overwrite', []);
+        if (!in_array($appId, $ignoreMaxApps, true)) {
+            $ignoreMaxApps[] = $appId;
+            $this->config->setSystemValue('app_install_overwrite', $ignoreMaxApps);
+        }
+    }
+
+    public function loadApp(string $app): void {
+        if (isset($this->loadedApps[$app])) {
+            return;
+        }
+        $this->loadedApps[$app] = true;
+        $appPath = \OC_App::getAppPath($app);
+        if ($appPath === false) {
+            return;
+        }
+        $eventLogger = \OC::$server->get(\OCP\Diagnostics\IEventLogger::class);
+        $eventLogger->start("bootstrap:load_app:$app", "Load $app");
+
+        // in case someone calls loadApp() directly
+        \OC_App::registerAutoloading($app, $appPath);
+
+        /** @var Coordinator $coordinator */
+        $coordinator = \OC::$server->get(Coordinator::class);
+        $isBootable = $coordinator->isBootable($app);
+
+        $hasAppPhpFile = is_file($appPath . '/appinfo/app.php');
+
+        $eventLogger = \OC::$server->get(IEventLogger::class);
+        $eventLogger->start('bootstrap:load_app_' . $app, 'Load app: ' . $app);
+        if ($isBootable && $hasAppPhpFile) {
+            $this->logger->error('/appinfo/app.php is not loaded when \OCP\AppFramework\Bootstrap\IBootstrap on the application class is used. Migrate everything from app.php to the Application class.', [
+                'app' => $app,
+            ]);
+        } elseif ($hasAppPhpFile) {
+            $eventLogger->start("bootstrap:load_app:$app:app.php", "Load legacy app.php app $app");
+            $this->logger->debug('/appinfo/app.php is deprecated, use \OCP\AppFramework\Bootstrap\IBootstrap on the application class instead.', [
+                'app' => $app,
+            ]);
+            try {
+                self::requireAppFile($appPath);
+            } catch (\Throwable $ex) {
+                if ($ex instanceof ServerNotAvailableException) {
+                    throw $ex;
+                }
+                if (!$this->isShipped($app) && !$this->isType($app, ['authentication'])) {
+                    $this->logger->error("App $app threw an error during app.php load and will be disabled: " . $ex->getMessage(), [
+                        'exception' => $ex,
+                    ]);
+
+                    // Only disable apps which are not shipped and that are not authentication apps
+                    $this->disableApp($app, true);
+                } else {
+                    $this->logger->error("App $app threw an error during app.php load: " . $ex->getMessage(), [
+                        'exception' => $ex,
+                    ]);
+                }
+            }
+            $eventLogger->end("bootstrap:load_app:$app:app.php");
+        }
+
+        $coordinator->bootApp($app);
+
+        $eventLogger->start("bootstrap:load_app:$app:info", "Load info.xml for $app and register any services defined in it");
+        $info = $this->getAppInfo($app);
+        if (!empty($info['activity'])) {
+            $activityManager = \OC::$server->get(IActivityManager::class);
+            if (!empty($info['activity']['filters'])) {
+                foreach ($info['activity']['filters'] as $filter) {
+                    $activityManager->registerFilter($filter);
+                }
+            }
+            if (!empty($info['activity']['settings'])) {
+                foreach ($info['activity']['settings'] as $setting) {
+                    $activityManager->registerSetting($setting);
+                }
+            }
+            if (!empty($info['activity']['providers'])) {
+                foreach ($info['activity']['providers'] as $provider) {
+                    $activityManager->registerProvider($provider);
+                }
+            }
+        }
+
+        if (!empty($info['settings'])) {
+            $settingsManager = \OC::$server->get(ISettingsManager::class);
+            if (!empty($info['settings']['admin'])) {
+                foreach ($info['settings']['admin'] as $setting) {
+                    $settingsManager->registerSetting('admin', $setting);
+                }
+            }
+            if (!empty($info['settings']['admin-section'])) {
+                foreach ($info['settings']['admin-section'] as $section) {
+                    $settingsManager->registerSection('admin', $section);
+                }
+            }
+            if (!empty($info['settings']['personal'])) {
+                foreach ($info['settings']['personal'] as $setting) {
+                    $settingsManager->registerSetting('personal', $setting);
+                }
+            }
+            if (!empty($info['settings']['personal-section'])) {
+                foreach ($info['settings']['personal-section'] as $section) {
+                    $settingsManager->registerSection('personal', $section);
+                }
+            }
+        }
+
+        if (!empty($info['collaboration']['plugins'])) {
+            // deal with one or many plugin entries
+            $plugins = isset($info['collaboration']['plugins']['plugin']['@value']) ?
+                [$info['collaboration']['plugins']['plugin']] : $info['collaboration']['plugins']['plugin'];
+            $collaboratorSearch = null;
+            $autoCompleteManager = null;
+            foreach ($plugins as $plugin) {
+                if ($plugin['@attributes']['type'] === 'collaborator-search') {
+                    $pluginInfo = [
+                        'shareType' => $plugin['@attributes']['share-type'],
+                        'class' => $plugin['@value'],
+                    ];
+                    $collaboratorSearch ??= \OC::$server->get(ICollaboratorSearch::class);
+                    $collaboratorSearch->registerPlugin($pluginInfo);
+                } elseif ($plugin['@attributes']['type'] === 'autocomplete-sort') {
+                    $autoCompleteManager ??= \OC::$server->get(IAutoCompleteManager::class);
+                    $autoCompleteManager->registerSorter($plugin['@value']);
+                }
+            }
+        }
+        $eventLogger->end("bootstrap:load_app:$app:info");
+
+        $eventLogger->end("bootstrap:load_app:$app");
+    }
+    /**
+     * Check if an app is loaded
+     * @param string $app app id
+     * @since 26.0.0
+     */
+    public function isAppLoaded(string $app): bool {
+        return isset($this->loadedApps[$app]);
+    }
+
+    /**
+     * Load app.php from the given app
+     *
+     * @param string $app app name
+     * @throws \Error
+     */
+    private static function requireAppFile(string $app): void {
+        // encapsulated here to avoid variable scope conflicts
+        require_once $app . '/appinfo/app.php';
+    }
+
+    /**
+     * Enable an app for every user
+     *
+     * @param string $appId
+     * @param bool $forceEnable
+     * @throws AppPathNotFoundException
+     */
+    public function enableApp(string $appId, bool $forceEnable = false): void {
+        // Check if app exists
+        $this->getAppPath($appId);
+
+        if ($forceEnable) {
+            $this->ignoreNextcloudRequirementForApp($appId);
+        }
+
+        $this->installedAppsCache[$appId] = 'yes';
+        $this->appConfig->setValue($appId, 'enabled', 'yes');
+        $this->dispatcher->dispatchTyped(new AppEnableEvent($appId));
+        $this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_ENABLE, new ManagerEvent(
+            ManagerEvent::EVENT_APP_ENABLE, $appId
+        ));
+        $this->clearAppsCache();
+    }
+
+    /**
+     * Whether a list of types contains a protected app type
+     *
+     * @param string[] $types
+     * @return bool
+     */
+    public function hasProtectedAppType($types) {
+        if (empty($types)) {
+            return false;
+        }
+
+        $protectedTypes = array_intersect($this->protectedAppTypes, $types);
+        return !empty($protectedTypes);
+    }
+
+    /**
+     * Enable an app only for specific groups
+     *
+     * @param string $appId
+     * @param IGroup[] $groups
+     * @param bool $forceEnable
+     * @throws \InvalidArgumentException if app can't be enabled for groups
+     * @throws AppPathNotFoundException
+     */
+    public function enableAppForGroups(string $appId, array $groups, bool $forceEnable = false): void {
+        // Check if app exists
+        $this->getAppPath($appId);
+
+        $info = $this->getAppInfo($appId);
+        if (!empty($info['types']) && $this->hasProtectedAppType($info['types'])) {
+            throw new \InvalidArgumentException("$appId can't be enabled for groups.");
+        }
+
+        if ($forceEnable) {
+            $this->ignoreNextcloudRequirementForApp($appId);
+        }
+
+        /** @var string[] $groupIds */
+        $groupIds = array_map(function ($group) {
+            /** @var IGroup $group */
+            return ($group instanceof IGroup)
+                ? $group->getGID()
+                : $group;
+        }, $groups);
+
+        $this->installedAppsCache[$appId] = json_encode($groupIds);
+        $this->appConfig->setValue($appId, 'enabled', json_encode($groupIds));
+        $this->dispatcher->dispatchTyped(new AppEnableEvent($appId, $groupIds));
+        $this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_ENABLE_FOR_GROUPS, new ManagerEvent(
+            ManagerEvent::EVENT_APP_ENABLE_FOR_GROUPS, $appId, $groups
+        ));
+        $this->clearAppsCache();
+    }
+
+    /**
+     * Disable an app for every user
+     *
+     * @param string $appId
+     * @param bool $automaticDisabled
+     * @throws \Exception if app can't be disabled
+     */
+    public function disableApp($appId, $automaticDisabled = false) {
+        if ($this->isAlwaysEnabled($appId)) {
+            throw new \Exception("$appId can't be disabled.");
+        }
+
+        if ($automaticDisabled) {
+            $previousSetting = $this->appConfig->getValue($appId, 'enabled', 'yes');
+            if ($previousSetting !== 'yes' && $previousSetting !== 'no') {
+                $previousSetting = json_decode($previousSetting, true);
+            }
+            $this->autoDisabledApps[$appId] = $previousSetting;
+        }
+
+        unset($this->installedAppsCache[$appId]);
+        $this->appConfig->setValue($appId, 'enabled', 'no');
+
+        // run uninstall steps
+        $appData = $this->getAppInfo($appId);
+        if (!is_null($appData)) {
+            \OC_App::executeRepairSteps($appId, $appData['repair-steps']['uninstall']);
+        }
+
+        $this->dispatcher->dispatchTyped(new AppDisableEvent($appId));
+        $this->legacyDispatcher->dispatch(ManagerEvent::EVENT_APP_DISABLE, new ManagerEvent(
+            ManagerEvent::EVENT_APP_DISABLE, $appId
+        ));
+        $this->clearAppsCache();
+    }
+
+    /**
+     * Get the directory for the given app.
+     *
+     * @param string $appId
+     * @return string
+     * @throws AppPathNotFoundException if app folder can't be found
+     */
+    public function getAppPath($appId) {
+        $appPath = \OC_App::getAppPath($appId);
+        if ($appPath === false) {
+            throw new AppPathNotFoundException('Could not find path for ' . $appId);
+        }
+        return $appPath;
+    }
+
+    /**
+     * Get the web path for the given app.
+     *
+     * @param string $appId
+     * @return string
+     * @throws AppPathNotFoundException if app path can't be found
+     */
+    public function getAppWebPath(string $appId): string {
+        $appWebPath = \OC_App::getAppWebPath($appId);
+        if ($appWebPath === false) {
+            throw new AppPathNotFoundException('Could not find web path for ' . $appId);
+        }
+        return $appWebPath;
+    }
+
+    /**
+     * Clear the cached list of apps when enabling/disabling an app
+     */
+    public function clearAppsCache() {
+        $this->appInfos = [];
+    }
+
+    /**
+     * Returns a list of apps that need upgrade
+     *
+     * @param string $version Nextcloud version as array of version components
+     * @return array list of app info from apps that need an upgrade
+     *
+     * @internal
+     */
+    public function getAppsNeedingUpgrade($version) {
+        $appsToUpgrade = [];
+        $apps = $this->getInstalledApps();
+        foreach ($apps as $appId) {
+            $appInfo = $this->getAppInfo($appId);
+            $appDbVersion = $this->appConfig->getValue($appId, 'installed_version');
+            if ($appDbVersion
+                && isset($appInfo['version'])
+                && version_compare($appInfo['version'], $appDbVersion, '>')
+                && \OC_App::isAppCompatible($version, $appInfo)
+            ) {
+                $appsToUpgrade[] = $appInfo;
+            }
+        }
+
+        return $appsToUpgrade;
+    }
+
+    /**
+     * Returns the app information from "appinfo/info.xml".
+     *
+     * @param string $appId app id
+     *
+     * @param bool $path
+     * @param null $lang
+     * @return array|null app info
+     */
+    public function getAppInfo(string $appId, bool $path = false, $lang = null) {
+        if ($path) {
+            $file = $appId;
+        } else {
+            if ($lang === null && isset($this->appInfos[$appId])) {
+                return $this->appInfos[$appId];
+            }
+            try {
+                $appPath = $this->getAppPath($appId);
+            } catch (AppPathNotFoundException $e) {
+                return null;
+            }
+            $file = $appPath . '/appinfo/info.xml';
+        }
+
+        $parser = new InfoParser($this->memCacheFactory->createLocal('core.appinfo'));
+        $data = $parser->parse($file);
+
+        if (is_array($data)) {
+            $data = \OC_App::parseAppInfo($data, $lang);
+        }
+
+        if ($lang === null) {
+            $this->appInfos[$appId] = $data;
+        }
+
+        return $data;
+    }
+
+    public function getAppVersion(string $appId, bool $useCache = true): string {
+        if (!$useCache || !isset($this->appVersions[$appId])) {
+            $appInfo = $this->getAppInfo($appId);
+            $this->appVersions[$appId] = ($appInfo !== null && isset($appInfo['version'])) ? $appInfo['version'] : '0';
+        }
+        return $this->appVersions[$appId];
+    }
+
+    /**
+     * Returns a list of apps incompatible with the given version
+     *
+     * @param string $version Nextcloud version as array of version components
+     *
+     * @return array list of app info from incompatible apps
+     *
+     * @internal
+     */
+    public function getIncompatibleApps(string $version): array {
+        $apps = $this->getInstalledApps();
+        $incompatibleApps = [];
+        foreach ($apps as $appId) {
+            $info = $this->getAppInfo($appId);
+            if ($info === null) {
+                $incompatibleApps[] = ['id' => $appId, 'name' => $appId];
+            } elseif (!\OC_App::isAppCompatible($version, $info)) {
+                $incompatibleApps[] = $info;
+            }
+        }
+        return $incompatibleApps;
+    }
+
+    /**
+     * @inheritdoc
+     * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::isShipped()
+     */
+    public function isShipped($appId) {
+        $this->loadShippedJson();
+        return in_array($appId, $this->shippedApps, true);
+    }
+
+    private function isAlwaysEnabled(string $appId): bool {
+        $alwaysEnabled = $this->getAlwaysEnabledApps();
+        return in_array($appId, $alwaysEnabled, true);
+    }
+
+    /**
+     * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::loadShippedJson()
+     * @throws \Exception
+     */
+    private function loadShippedJson(): void {
+        if ($this->shippedApps === null) {
+            $shippedJson = \OC::$SERVERROOT . '/core/shipped.json';
+            if (!file_exists($shippedJson)) {
+                throw new \Exception("File not found: $shippedJson");
+            }
+            $content = json_decode(file_get_contents($shippedJson), true);
+            $this->shippedApps = $content['shippedApps'];
+            $this->alwaysEnabled = $content['alwaysEnabled'];
+            $this->defaultEnabled = $content['defaultEnabled'];
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getAlwaysEnabledApps() {
+        $this->loadShippedJson();
+        return $this->alwaysEnabled;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function isDefaultEnabled(string $appId): bool {
+        return (in_array($appId, $this->getDefaultEnabledApps()));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getDefaultEnabledApps():array {
+        $this->loadShippedJson();
+
+        return $this->defaultEnabled;
+    }
+
+    public function getDefaultAppForUser(?IUser $user = null): string {
+        // Set fallback to always-enabled files app
+        $appId = 'files';
+        $defaultApps = explode(',', $this->config->getSystemValueString('defaultapp', 'dashboard,files'));
+
+        $user ??= $this->userSession->getUser();
+
+        if ($user !== null) {
+            $userDefaultApps = explode(',', $this->config->getUserValue($user->getUID(), 'core', 'defaultapp'));
+            $defaultApps = array_filter(array_merge($userDefaultApps, $defaultApps));
+        }
+
+        // Find the first app that is enabled for the current user
+        foreach ($defaultApps as $defaultApp) {
+            $defaultApp = \OC_App::cleanAppId(strip_tags($defaultApp));
+            if ($this->isEnabledForUser($defaultApp, $user)) {
+                $appId = $defaultApp;
+                break;
+            }
+        }
+
+        return $appId;
+    }
 }