nextcloud / server

lib/private/App/AppManager.php

Indentation +415 added lines, -415 removed lines

@@ -44,419 +44,419 @@
 
 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',
-	];
-
-	/** @var IUserSession */
-	private $userSession;
-
-	/** @var AppConfig */
-	private $appConfig;
-
-	/** @var IGroupManager */
-	private $groupManager;
-
-	/** @var ICacheFactory */
-	private $memCacheFactory;
-
-	/** @var EventDispatcherInterface */
-	private $dispatcher;
-
-	/** @var string[] $appId => $enabled */
-	private $installedAppsCache;
-
-	/** @var string[] */
-	private $shippedApps;
-
-	/** @var string[] */
-	private $alwaysEnabled;
-
-	/** @var array */
-	private $appInfos = [];
-
-	/** @var array */
-	private $appVersions = [];
-
-	/**
-	 * @param IUserSession $userSession
-	 * @param AppConfig $appConfig
-	 * @param IGroupManager $groupManager
-	 * @param ICacheFactory $memCacheFactory
-	 * @param EventDispatcherInterface $dispatcher
-	 */
-	public function __construct(IUserSession $userSession,
-								AppConfig $appConfig,
-								IGroupManager $groupManager,
-								ICacheFactory $memCacheFactory,
-								EventDispatcherInterface $dispatcher) {
-		$this->userSession = $userSession;
-		$this->appConfig = $appConfig;
-		$this->groupManager = $groupManager;
-		$this->memCacheFactory = $memCacheFactory;
-		$this->dispatcher = $dispatcher;
-	}
-
-	/**
-	 * @return string[] $appId => $enabled
-	 */
-	private function getInstalledAppsValues() {
-		if (!$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);
-	}
-
-	/**
-	 * 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;
-		}
-	}
-
-	/**
-	 * @param string $enabled
-	 * @param IUser $user
-	 * @return bool
-	 */
-	private function checkAppForUser($enabled, $user) {
-		if ($enabled === 'yes') {
-			return true;
-		} elseif ($user === null) {
-			return false;
-		} else {
-			if(empty($enabled)){
-				return false;
-			}
-
-			$groupIds = json_decode($enabled);
-
-			if (!is_array($groupIds)) {
-				$jsonError = json_last_error();
-				\OC::$server->getLogger()->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
-				return false;
-			}
-
-			$userGroups = $this->groupManager->getUserGroupIds($user);
-			foreach ($userGroups as $groupId) {
-				if (in_array($groupId, $groupIds, true)) {
-					return true;
-				}
-			}
-			return false;
-		}
-	}
-
-	/**
-	 * 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 $appId
-	 * @return bool
-	 */
-	public function isInstalled($appId) {
-		$installedApps = $this->getInstalledAppsValues();
-		return isset($installedApps[$appId]);
-	}
-
-	/**
-	 * Enable an app for every user
-	 *
-	 * @param string $appId
-	 * @throws AppPathNotFoundException
-	 */
-	public function enableApp($appId) {
-		// Check if app exists
-		$this->getAppPath($appId);
-
-		$this->installedAppsCache[$appId] = 'yes';
-		$this->appConfig->setValue($appId, 'enabled', 'yes');
-		$this->dispatcher->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 \OCP\IGroup[] $groups
-	 * @throws \InvalidArgumentException if app can't be enabled for groups
-	 * @throws AppPathNotFoundException
-	 */
-	public function enableAppForGroups($appId, $groups) {
-		// 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.");
-		}
-
-		$groupIds = array_map(function ($group) {
-			/** @var \OCP\IGroup $group */
-			return $group->getGID();
-		}, $groups);
-		$this->installedAppsCache[$appId] = json_encode($groupIds);
-		$this->appConfig->setValue($appId, 'enabled', json_encode($groupIds));
-		$this->dispatcher->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 $appId
-	 * @throws \Exception if app can't be disabled
-	 */
-	public function disableApp($appId) {
-		if ($this->isAlwaysEnabled($appId)) {
-			throw new \Exception("$appId can't be disabled.");
-		}
-		unset($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->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;
-	}
-
-	/**
-	 * Clear the cached list of apps when enabling/disabling an app
-	 */
-	public function clearAppsCache() {
-		$settingsMemCache = $this->memCacheFactory->createDistributed('settings');
-		$settingsMemCache->clear('listApps');
-		$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])) {
-			$appInfo = \OC::$server->getAppManager()->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();
-		$incompatibleApps = array();
-		foreach ($apps as $appId) {
-			$info = $this->getAppInfo($appId);
-			if ($info === null) {
-				$incompatibleApps[] = ['id' => $appId];
-			} else if (!\OC_App::isAppCompatible($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, $this->shippedApps, true);
-	}
-
-	private function isAlwaysEnabled($appId) {
-		$alwaysEnabled = $this->getAlwaysEnabledApps();
-		return in_array($appId, $alwaysEnabled, true);
-	}
-
-	/**
-	 * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::loadShippedJson()
-	 * @throws \Exception
-	 */
-	private function loadShippedJson() {
-		if ($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'];
-		}
-	}
-
-	/**
-	 * @inheritdoc
-	 */
-	public function getAlwaysEnabledApps() {
-		$this->loadShippedJson();
-		return $this->alwaysEnabled;
-	}
+    /**
+     * Apps with these types can not be enabled for certain groups only
+     * @var string[]
+     */
+    protected $protectedAppTypes = [
+        'filesystem',
+        'prelogin',
+        'authentication',
+        'logging',
+        'prevent_group_restriction',
+    ];
+
+    /** @var IUserSession */
+    private $userSession;
+
+    /** @var AppConfig */
+    private $appConfig;
+
+    /** @var IGroupManager */
+    private $groupManager;
+
+    /** @var ICacheFactory */
+    private $memCacheFactory;
+
+    /** @var EventDispatcherInterface */
+    private $dispatcher;
+
+    /** @var string[] $appId => $enabled */
+    private $installedAppsCache;
+
+    /** @var string[] */
+    private $shippedApps;
+
+    /** @var string[] */
+    private $alwaysEnabled;
+
+    /** @var array */
+    private $appInfos = [];
+
+    /** @var array */
+    private $appVersions = [];
+
+    /**
+     * @param IUserSession $userSession
+     * @param AppConfig $appConfig
+     * @param IGroupManager $groupManager
+     * @param ICacheFactory $memCacheFactory
+     * @param EventDispatcherInterface $dispatcher
+     */
+    public function __construct(IUserSession $userSession,
+                                AppConfig $appConfig,
+                                IGroupManager $groupManager,
+                                ICacheFactory $memCacheFactory,
+                                EventDispatcherInterface $dispatcher) {
+        $this->userSession = $userSession;
+        $this->appConfig = $appConfig;
+        $this->groupManager = $groupManager;
+        $this->memCacheFactory = $memCacheFactory;
+        $this->dispatcher = $dispatcher;
+    }
+
+    /**
+     * @return string[] $appId => $enabled
+     */
+    private function getInstalledAppsValues() {
+        if (!$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);
+    }
+
+    /**
+     * 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;
+        }
+    }
+
+    /**
+     * @param string $enabled
+     * @param IUser $user
+     * @return bool
+     */
+    private function checkAppForUser($enabled, $user) {
+        if ($enabled === 'yes') {
+            return true;
+        } elseif ($user === null) {
+            return false;
+        } else {
+            if(empty($enabled)){
+                return false;
+            }
+
+            $groupIds = json_decode($enabled);
+
+            if (!is_array($groupIds)) {
+                $jsonError = json_last_error();
+                \OC::$server->getLogger()->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
+                return false;
+            }
+
+            $userGroups = $this->groupManager->getUserGroupIds($user);
+            foreach ($userGroups as $groupId) {
+                if (in_array($groupId, $groupIds, true)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    /**
+     * 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 $appId
+     * @return bool
+     */
+    public function isInstalled($appId) {
+        $installedApps = $this->getInstalledAppsValues();
+        return isset($installedApps[$appId]);
+    }
+
+    /**
+     * Enable an app for every user
+     *
+     * @param string $appId
+     * @throws AppPathNotFoundException
+     */
+    public function enableApp($appId) {
+        // Check if app exists
+        $this->getAppPath($appId);
+
+        $this->installedAppsCache[$appId] = 'yes';
+        $this->appConfig->setValue($appId, 'enabled', 'yes');
+        $this->dispatcher->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 \OCP\IGroup[] $groups
+     * @throws \InvalidArgumentException if app can't be enabled for groups
+     * @throws AppPathNotFoundException
+     */
+    public function enableAppForGroups($appId, $groups) {
+        // 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.");
+        }
+
+        $groupIds = array_map(function ($group) {
+            /** @var \OCP\IGroup $group */
+            return $group->getGID();
+        }, $groups);
+        $this->installedAppsCache[$appId] = json_encode($groupIds);
+        $this->appConfig->setValue($appId, 'enabled', json_encode($groupIds));
+        $this->dispatcher->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 $appId
+     * @throws \Exception if app can't be disabled
+     */
+    public function disableApp($appId) {
+        if ($this->isAlwaysEnabled($appId)) {
+            throw new \Exception("$appId can't be disabled.");
+        }
+        unset($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->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;
+    }
+
+    /**
+     * Clear the cached list of apps when enabling/disabling an app
+     */
+    public function clearAppsCache() {
+        $settingsMemCache = $this->memCacheFactory->createDistributed('settings');
+        $settingsMemCache->clear('listApps');
+        $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])) {
+            $appInfo = \OC::$server->getAppManager()->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();
+        $incompatibleApps = array();
+        foreach ($apps as $appId) {
+            $info = $this->getAppInfo($appId);
+            if ($info === null) {
+                $incompatibleApps[] = ['id' => $appId];
+            } else if (!\OC_App::isAppCompatible($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, $this->shippedApps, true);
+    }
+
+    private function isAlwaysEnabled($appId) {
+        $alwaysEnabled = $this->getAlwaysEnabledApps();
+        return in_array($appId, $alwaysEnabled, true);
+    }
+
+    /**
+     * In case you change this method, also change \OC\App\CodeChecker\InfoChecker::loadShippedJson()
+     * @throws \Exception
+     */
+    private function loadShippedJson() {
+        if ($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'];
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getAlwaysEnabledApps() {
+        $this->loadShippedJson();
+        return $this->alwaysEnabled;
+    }
 }