nextcloud / server

lib/private/legacy/util.php

Spacing +62 added lines, -62 removed lines

@@ -80,7 +80,7 @@ 
 
 	private static function initLocalStorageRootFS() {
 		// mount local file backend as root
-		$configDataDirectory = \OC::$server->getSystemConfig()->getValue("datadirectory", OC::$SERVERROOT . "/data");
+		$configDataDirectory = \OC::$server->getSystemConfig()->getValue("datadirectory", OC::$SERVERROOT."/data");
 		//first set up the local "root" storage
 		\OC\Files\Filesystem::initMountManager();
 		if (!self::$rootMounted) {
@@ -202,7 +202,7 @@ 
 		\OC\Files\Filesystem::initMountManager();
 
 		\OC\Files\Filesystem::logWarningWhenAddingStorageWrapper(false);
-		\OC\Files\Filesystem::addStorageWrapper('mount_options', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+		\OC\Files\Filesystem::addStorageWrapper('mount_options', function($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
 			if ($storage->instanceOfStorage('\OC\Files\Storage\Common')) {
 				/** @var \OC\Files\Storage\Common $storage */
 				$storage->setMountOptions($mount->getOptions());
@@ -210,7 +210,7 @@ 
 			return $storage;
 		});
 
-		\OC\Files\Filesystem::addStorageWrapper('enable_sharing', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+		\OC\Files\Filesystem::addStorageWrapper('enable_sharing', function($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
 			if (!$mount->getOption('enable_sharing', true)) {
 				return new \OC\Files\Storage\Wrapper\PermissionsMask([
 					'storage' => $storage,
@@ -221,21 +221,21 @@ 
 		});
 
 		// install storage availability wrapper, before most other wrappers
-		\OC\Files\Filesystem::addStorageWrapper('oc_availability', function ($mountPoint, \OCP\Files\Storage\IStorage $storage) {
+		\OC\Files\Filesystem::addStorageWrapper('oc_availability', function($mountPoint, \OCP\Files\Storage\IStorage $storage) {
 			if (!$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
 				return new \OC\Files\Storage\Wrapper\Availability(['storage' => $storage]);
 			}
 			return $storage;
 		});
 
-		\OC\Files\Filesystem::addStorageWrapper('oc_encoding', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+		\OC\Files\Filesystem::addStorageWrapper('oc_encoding', function($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
 			if ($mount->getOption('encoding_compatibility', false) && !$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
 				return new \OC\Files\Storage\Wrapper\Encoding(['storage' => $storage]);
 			}
 			return $storage;
 		});
 
-		\OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($mountPoint, $storage) {
+		\OC\Files\Filesystem::addStorageWrapper('oc_quota', function($mountPoint, $storage) {
 			// set up quota for home storages, even for other users
 			// which can happen when using sharing
 
@@ -258,7 +258,7 @@ 
 			return $storage;
 		});
 
-		\OC\Files\Filesystem::addStorageWrapper('readonly', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+		\OC\Files\Filesystem::addStorageWrapper('readonly', function($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
 			/*
 			 * Do not allow any operations that modify the storage
 			 */
@@ -299,7 +299,7 @@ 
 		//if we aren't logged in, there is no use to set up the filesystem
 		if ($user != "") {
 
-			$userDir = '/' . $user . '/files';
+			$userDir = '/'.$user.'/files';
 
 			//jail the user into his "home" directory
 			\OC\Files\Filesystem::init($user, $userDir);
@@ -379,7 +379,7 @@ 
 			return \OCP\Files\FileInfo::SPACE_UNLIMITED;
 		}
 		$userQuota = $user->getQuota();
-		if($userQuota === 'none') {
+		if ($userQuota === 'none') {
 			return \OCP\Files\FileInfo::SPACE_UNLIMITED;
 		}
 		return OC_Helper::computerFileSize($userQuota);
@@ -395,7 +395,7 @@ 
 	 */
 	public static function copySkeleton($userId, \OCP\Files\Folder $userDirectory) {
 
-		$plainSkeletonDirectory = \OC::$server->getConfig()->getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton');
+		$plainSkeletonDirectory = \OC::$server->getConfig()->getSystemValue('skeletondirectory', \OC::$SERVERROOT.'/core/skeleton');
 		$userLang = \OC::$server->getL10NFactory()->findLanguage();
 		$skeletonDirectory = str_replace('{lang}', $userLang, $plainSkeletonDirectory);
 
@@ -417,9 +417,9 @@ 
 		if ($instanceId === null) {
 			throw new \RuntimeException('no instance id!');
 		}
-		$appdata = 'appdata_' . $instanceId;
+		$appdata = 'appdata_'.$instanceId;
 		if ($userId === $appdata) {
-			throw new \RuntimeException('username is reserved name: ' . $appdata);
+			throw new \RuntimeException('username is reserved name: '.$appdata);
 		}
 
 		if (!empty($skeletonDirectory)) {
@@ -446,7 +446,7 @@ 
 
 		// Verify if folder exists
 		$dir = opendir($source);
-		if($dir === false) {
+		if ($dir === false) {
 			$logger->error(sprintf('Could not opendir "%s"', $source), ['app' => 'core']);
 			return;
 		}
@@ -454,14 +454,14 @@ 
 		// Copy the files
 		while (false !== ($file = readdir($dir))) {
 			if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
-				if (is_dir($source . '/' . $file)) {
+				if (is_dir($source.'/'.$file)) {
 					$child = $target->newFolder($file);
-					self::copyr($source . '/' . $file, $child);
+					self::copyr($source.'/'.$file, $child);
 				} else {
 					$child = $target->newFile($file);
-					$sourceStream = fopen($source . '/' . $file, 'r');
-					if($sourceStream === false) {
-						$logger->error(sprintf('Could not fopen "%s"', $source . '/' . $file), ['app' => 'core']);
+					$sourceStream = fopen($source.'/'.$file, 'r');
+					if ($sourceStream === false) {
+						$logger->error(sprintf('Could not fopen "%s"', $source.'/'.$file), ['app' => 'core']);
 						closedir($dir);
 						return;
 					}
@@ -538,8 +538,8 @@ 
 			return;
 		}
 
-		$timestamp = filemtime(OC::$SERVERROOT . '/version.php');
-		require OC::$SERVERROOT . '/version.php';
+		$timestamp = filemtime(OC::$SERVERROOT.'/version.php');
+		require OC::$SERVERROOT.'/version.php';
 		/** @var $timestamp int */
 		self::$versionCache['OC_Version_Timestamp'] = $timestamp;
 		/** @var $OC_Version string */
@@ -586,7 +586,7 @@ 
 
 		// core js files need separate handling
 		if ($application !== 'core' && $file !== null) {
-			self::addTranslations ( $application );
+			self::addTranslations($application);
 		}
 		self::addExternalResource($application, $prepend, $path, "script");
 	}
@@ -663,7 +663,7 @@ 
 		if ($type === "style") {
 			if (!in_array($path, self::$styles)) {
 				if ($prepend === true) {
-					array_unshift ( self::$styles, $path );
+					array_unshift(self::$styles, $path);
 				} else {
 					self::$styles[] = $path;
 				}
@@ -671,7 +671,7 @@ 
 		} elseif ($type === "script") {
 			if (!in_array($path, self::$scripts)) {
 				if ($prepend === true) {
-					array_unshift ( self::$scripts, $path );
+					array_unshift(self::$scripts, $path);
 				} else {
 					self::$scripts [] = $path;
 				}
@@ -687,7 +687,7 @@ 
 	 * @param array $attributes array of attributes for the element
 	 * @param string $text the text content for the element
 	 */
-	public static function addHeader($tag, $attributes, $text=null) {
+	public static function addHeader($tag, $attributes, $text = null) {
 		self::$headers[] = array(
 			'tag' => $tag,
 			'attributes' => $attributes,
@@ -727,7 +727,7 @@ 
 	public static function checkServer(\OC\SystemConfig $config) {
 		$l = \OC::$server->getL10N('lib');
 		$errors = array();
-		$CONFIG_DATADIRECTORY = $config->getValue('datadirectory', OC::$SERVERROOT . '/data');
+		$CONFIG_DATADIRECTORY = $config->getValue('datadirectory', OC::$SERVERROOT.'/data');
 
 		if (!self::needUpgrade($config) && $config->getValue('installed', false)) {
 			// this check needs to be done every time
@@ -762,7 +762,7 @@ 
 		}
 
 		// Check if config folder is writable.
-		if(!OC_Helper::isReadOnlyConfigEnabled()) {
+		if (!OC_Helper::isReadOnlyConfigEnabled()) {
 			if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) {
 				$errors[] = array(
 					'error' => $l->t('Cannot write into "config" directory'),
@@ -902,15 +902,15 @@ 
 			}
 		}
 
-		foreach($missingDependencies as $missingDependency) {
+		foreach ($missingDependencies as $missingDependency) {
 			$errors[] = array(
 				'error' => $l->t('PHP module %s not installed.', array($missingDependency)),
 				'hint' => $moduleHint
 			);
 			$webServerRestart = true;
 		}
-		foreach($invalidIniSettings as $setting) {
-			if(is_bool($setting[1])) {
+		foreach ($invalidIniSettings as $setting) {
+			if (is_bool($setting[1])) {
 				$setting[1] = $setting[1] ? 'on' : 'off';
 			}
 			$errors[] = [
@@ -928,7 +928,7 @@ 
 		 * TODO: Should probably be implemented in the above generic dependency
 		 *       check somehow in the long-term.
 		 */
-		if($iniWrapper->getBool('mbstring.func_overload') !== null &&
+		if ($iniWrapper->getBool('mbstring.func_overload') !== null &&
 			$iniWrapper->getBool('mbstring.func_overload') === true) {
 			$errors[] = array(
 				'error' => $l->t('mbstring.func_overload is set to "%s" instead of the expected value "0"', [$iniWrapper->getString('mbstring.func_overload')]),
@@ -936,16 +936,16 @@ 
 			);
 		}
 
-		if(function_exists('xml_parser_create') &&
-			LIBXML_LOADED_VERSION < 20700 ) {
+		if (function_exists('xml_parser_create') &&
+			LIBXML_LOADED_VERSION < 20700) {
 			$version = LIBXML_LOADED_VERSION;
-			$major = floor($version/10000);
+			$major = floor($version / 10000);
 			$version -= ($major * 10000);
-			$minor = floor($version/100);
+			$minor = floor($version / 100);
 			$version -= ($minor * 100);
 			$patch = $version;
 			$errors[] = array(
-				'error' => $l->t('libxml2 2.7.0 is at least required. Currently %s is installed.', [$major . '.' . $minor . '.' . $patch]),
+				'error' => $l->t('libxml2 2.7.0 is at least required. Currently %s is installed.', [$major.'.'.$minor.'.'.$patch]),
 				'hint' => $l->t('To fix this issue update your libxml2 version and restart your web server.')
 			);
 		}
@@ -1011,7 +1011,7 @@ 
 	 * @return array arrays with error messages and hints
 	 */
 	public static function checkDataDirectoryPermissions($dataDirectory) {
-		if(\OC::$server->getConfig()->getSystemValue('check_data_directory_permissions', true) === false) {
+		if (\OC::$server->getConfig()->getSystemValue('check_data_directory_permissions', true) === false) {
 			return  [];
 		}
 		$l = \OC::$server->getL10N('lib');
@@ -1049,10 +1049,10 @@ 
 				'hint' => $l->t('Check the value of "datadirectory" in your configuration')
 			];
 		}
-		if (!file_exists($dataDirectory . '/.ocdata')) {
+		if (!file_exists($dataDirectory.'/.ocdata')) {
 			$errors[] = [
 				'error' => $l->t('Your data directory is invalid'),
-				'hint' => $l->t('Ensure there is a file called ".ocdata"' .
+				'hint' => $l->t('Ensure there is a file called ".ocdata"'.
 					' in the root of the data directory.')
 			];
 		}
@@ -1068,7 +1068,7 @@ 
 	public static function checkLoggedIn() {
 		// Check if we are a user
 		if (!\OC::$server->getUserSession()->isLoggedIn()) {
-			header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute(
+			header('Location: '.\OC::$server->getURLGenerator()->linkToRoute(
 						'core.login.showLoginForm',
 						[
 							'redirect_url' => \OC::$server->getRequest()->getRequestUri(),
@@ -1079,7 +1079,7 @@ 
 		}
 		// Redirect to 2FA challenge selection if 2FA challenge was not solved yet
 		if (\OC::$server->getTwoFactorAuthManager()->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
-			header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
+			header('Location: '.\OC::$server->getURLGenerator()->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
 			exit();
 		}
 	}
@@ -1092,7 +1092,7 @@ 
 	public static function checkAdminUser() {
 		OC_Util::checkLoggedIn();
 		if (!OC_User::isAdminUser(OC_User::getUser())) {
-			header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
+			header('Location: '.\OCP\Util::linkToAbsolute('', 'index.php'));
 			exit();
 		}
 	}
@@ -1106,12 +1106,12 @@ 
 		OC_Util::checkLoggedIn();
 		$userObject = \OC::$server->getUserSession()->getUser();
 		$isSubAdmin = false;
-		if($userObject !== null) {
+		if ($userObject !== null) {
 			$isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
 		}
 
 		if (!$isSubAdmin) {
-			header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
+			header('Location: '.\OCP\Util::linkToAbsolute('', 'index.php'));
 			exit();
 		}
 		return true;
@@ -1148,10 +1148,10 @@ 
 					}
 				}
 
-				if($config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true') {
-					$location = $urlGenerator->getAbsoluteURL('/apps/' . $appId . '/');
+				if ($config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true') {
+					$location = $urlGenerator->getAbsoluteURL('/apps/'.$appId.'/');
 				} else {
-					$location = $urlGenerator->getAbsoluteURL('/index.php/apps/' . $appId . '/');
+					$location = $urlGenerator->getAbsoluteURL('/index.php/apps/'.$appId.'/');
 				}
 			}
 		}
@@ -1165,7 +1165,7 @@ 
 	 */
 	public static function redirectToDefaultPage() {
 		$location = self::getDefaultPageUrl();
-		header('Location: ' . $location);
+		header('Location: '.$location);
 		exit();
 	}
 
@@ -1178,7 +1178,7 @@ 
 		$id = \OC::$server->getSystemConfig()->getValue('instanceid', null);
 		if (is_null($id)) {
 			// We need to guarantee at least one letter in instanceid so it can be used as the session_name
-			$id = 'oc' . \OC::$server->getSecureRandom()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
+			$id = 'oc'.\OC::$server->getSecureRandom()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
 			\OC::$server->getSystemConfig()->setValue('instanceid', $id);
 		}
 		return $id;
@@ -1200,7 +1200,7 @@ 
 			}, $value);
 		} else {
 			// Specify encoding for PHP<5.4
-			$value = htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8');
+			$value = htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
 		}
 		return $value;
 	}
@@ -1233,7 +1233,7 @@ 
 		$testContent = 'This is used for testing whether htaccess is properly enabled to disallow access from the outside. This file can be safely removed.';
 
 		// creating a test file
-		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
+		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT.'/data').'/'.$fileName;
 
 		if (file_exists($testFile)) {// already running this test, possible recursive call
 			return false;
@@ -1242,7 +1242,7 @@ 
 		$fp = @fopen($testFile, 'w');
 		if (!$fp) {
 			throw new OC\HintException('Can\'t create test file to check for working .htaccess file.',
-				'Make sure it is possible for the webserver to write to ' . $testFile);
+				'Make sure it is possible for the webserver to write to '.$testFile);
 		}
 		fwrite($fp, $testContent);
 		fclose($fp);
@@ -1269,10 +1269,10 @@ 
 		}
 
 		$fileName = '/htaccesstest.txt';
-		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
+		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT.'/data').'/'.$fileName;
 
 		// accessing the file via http
-		$url = \OC::$server->getURLGenerator()->getAbsoluteURL(OC::$WEBROOT . '/data' . $fileName);
+		$url = \OC::$server->getURLGenerator()->getAbsoluteURL(OC::$WEBROOT.'/data'.$fileName);
 		try {
 			$content = \OC::$server->getHTTPClientService()->newClient()->get($url)->getBody();
 		} catch (\Exception $e) {
@@ -1363,7 +1363,7 @@ 
 		$theme = \OC::$server->getSystemConfig()->getValue("theme", '');
 
 		if ($theme === '') {
-			if (is_dir(OC::$SERVERROOT . '/themes/default')) {
+			if (is_dir(OC::$SERVERROOT.'/themes/default')) {
 				$theme = 'default';
 			}
 		}
@@ -1436,13 +1436,13 @@ 
 	 * @return bool|string
 	 */
 	public static function normalizeUnicode($value) {
-		if(Normalizer::isNormalized($value)) {
+		if (Normalizer::isNormalized($value)) {
 			return $value;
 		}
 
 		$normalizedValue = Normalizer::normalize($value);
 		if ($normalizedValue === null || $normalizedValue === false) {
-			\OC::$server->getLogger()->warning('normalizing failed for "' . $value . '"', ['app' => 'core']);
+			\OC::$server->getLogger()->warning('normalizing failed for "'.$value.'"', ['app' => 'core']);
 			return $value;
 		}
 
@@ -1458,7 +1458,7 @@ 
 		$version = OC_Util::getVersionString();
 		$build = OC_Util::getBuild();
 		if (!empty($build) and OC_Util::getChannel() === 'daily') {
-			$version .= ' Build:' . $build;
+			$version .= ' Build:'.$build;
 		}
 		return $version;
 	}
@@ -1480,7 +1480,7 @@ 
 		}
 
 		// detect part files
-		if (preg_match('/' . \OCP\Files\FileInfo::BLACKLIST_FILES_REGEX . '/', $trimmed) !== 0) {
+		if (preg_match('/'.\OCP\Files\FileInfo::BLACKLIST_FILES_REGEX.'/', $trimmed) !== 0) {
 			return false;
 		}
 
@@ -1511,19 +1511,19 @@ 
 			} else if ($config->getValue('debug', false) && $versionDiff < 0) {
 				// downgrade with debug
 				$installedMajor = explode('.', $installedVersion);
-				$installedMajor = $installedMajor[0] . '.' . $installedMajor[1];
+				$installedMajor = $installedMajor[0].'.'.$installedMajor[1];
 				$currentMajor = explode('.', $currentVersion);
-				$currentMajor = $currentMajor[0] . '.' . $currentMajor[1];
+				$currentMajor = $currentMajor[0].'.'.$currentMajor[1];
 				if ($installedMajor === $currentMajor) {
 					// Same major, allow downgrade for developers
 					return true;
 				} else {
 					// downgrade attempt, throw exception
-					throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
+					throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from '.$installedVersion.' to '.$currentVersion.')');
 				}
 			} else if ($versionDiff < 0) {
 				// downgrade attempt, throw exception
-				throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
+				throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from '.$installedVersion.' to '.$currentVersion.')');
 			}
 
 			// also check for upgrades for apps (independently from the user)

Indentation +1447 added lines, -1447 removed lines

@@ -66,1457 +66,1457 @@
 use OCP\IUser;
 
 class OC_Util {
-	public static $scripts = array();
-	public static $styles = array();
-	public static $headers = array();
-	private static $rootMounted = false;
-	private static $fsSetup = false;
-
-	/** @var array Local cache of version.php */
-	private static $versionCache = null;
-
-	protected static function getAppManager() {
-		return \OC::$server->getAppManager();
-	}
-
-	private static function initLocalStorageRootFS() {
-		// mount local file backend as root
-		$configDataDirectory = \OC::$server->getSystemConfig()->getValue("datadirectory", OC::$SERVERROOT . "/data");
-		//first set up the local "root" storage
-		\OC\Files\Filesystem::initMountManager();
-		if (!self::$rootMounted) {
-			\OC\Files\Filesystem::mount('\OC\Files\Storage\Local', array('datadir' => $configDataDirectory), '/');
-			self::$rootMounted = true;
-		}
-	}
-
-	/**
-	 * mounting an object storage as the root fs will in essence remove the
-	 * necessity of a data folder being present.
-	 * TODO make home storage aware of this and use the object storage instead of local disk access
-	 *
-	 * @param array $config containing 'class' and optional 'arguments'
-	 * @suppress PhanDeprecatedFunction
-	 */
-	private static function initObjectStoreRootFS($config) {
-		// check misconfiguration
-		if (empty($config['class'])) {
-			\OCP\Util::writeLog('files', 'No class given for objectstore', ILogger::ERROR);
-		}
-		if (!isset($config['arguments'])) {
-			$config['arguments'] = array();
-		}
-
-		// instantiate object store implementation
-		$name = $config['class'];
-		if (strpos($name, 'OCA\\') === 0 && substr_count($name, '\\') >= 2) {
-			$segments = explode('\\', $name);
-			OC_App::loadApp(strtolower($segments[1]));
-		}
-		$config['arguments']['objectstore'] = new $config['class']($config['arguments']);
-		// mount with plain / root object store implementation
-		$config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
-
-		// mount object storage as root
-		\OC\Files\Filesystem::initMountManager();
-		if (!self::$rootMounted) {
-			\OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
-			self::$rootMounted = true;
-		}
-	}
-
-	/**
-	 * mounting an object storage as the root fs will in essence remove the
-	 * necessity of a data folder being present.
-	 *
-	 * @param array $config containing 'class' and optional 'arguments'
-	 * @suppress PhanDeprecatedFunction
-	 */
-	private static function initObjectStoreMultibucketRootFS($config) {
-		// check misconfiguration
-		if (empty($config['class'])) {
-			\OCP\Util::writeLog('files', 'No class given for objectstore', ILogger::ERROR);
-		}
-		if (!isset($config['arguments'])) {
-			$config['arguments'] = array();
-		}
-
-		// instantiate object store implementation
-		$name = $config['class'];
-		if (strpos($name, 'OCA\\') === 0 && substr_count($name, '\\') >= 2) {
-			$segments = explode('\\', $name);
-			OC_App::loadApp(strtolower($segments[1]));
-		}
-
-		if (!isset($config['arguments']['bucket'])) {
-			$config['arguments']['bucket'] = '';
-		}
-		// put the root FS always in first bucket for multibucket configuration
-		$config['arguments']['bucket'] .= '0';
-
-		$config['arguments']['objectstore'] = new $config['class']($config['arguments']);
-		// mount with plain / root object store implementation
-		$config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
-
-		// mount object storage as root
-		\OC\Files\Filesystem::initMountManager();
-		if (!self::$rootMounted) {
-			\OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
-			self::$rootMounted = true;
-		}
-	}
-
-	/**
-	 * Can be set up
-	 *
-	 * @param string $user
-	 * @return boolean
-	 * @description configure the initial filesystem based on the configuration
-	 * @suppress PhanDeprecatedFunction
-	 * @suppress PhanAccessMethodInternal
-	 */
-	public static function setupFS($user = '') {
-		//setting up the filesystem twice can only lead to trouble
-		if (self::$fsSetup) {
-			return false;
-		}
-
-		\OC::$server->getEventLogger()->start('setup_fs', 'Setup filesystem');
-
-		// If we are not forced to load a specific user we load the one that is logged in
-		if ($user === null) {
-			$user = '';
-		} else if ($user == "" && \OC::$server->getUserSession()->isLoggedIn()) {
-			$user = OC_User::getUser();
-		}
-
-		// load all filesystem apps before, so no setup-hook gets lost
-		OC_App::loadApps(array('filesystem'));
-
-		// the filesystem will finish when $user is not empty,
-		// mark fs setup here to avoid doing the setup from loading
-		// OC_Filesystem
-		if ($user != '') {
-			self::$fsSetup = true;
-		}
-
-		\OC\Files\Filesystem::initMountManager();
-
-		\OC\Files\Filesystem::logWarningWhenAddingStorageWrapper(false);
-		\OC\Files\Filesystem::addStorageWrapper('mount_options', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
-			if ($storage->instanceOfStorage('\OC\Files\Storage\Common')) {
-				/** @var \OC\Files\Storage\Common $storage */
-				$storage->setMountOptions($mount->getOptions());
-			}
-			return $storage;
-		});
-
-		\OC\Files\Filesystem::addStorageWrapper('enable_sharing', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
-			if (!$mount->getOption('enable_sharing', true)) {
-				return new \OC\Files\Storage\Wrapper\PermissionsMask([
-					'storage' => $storage,
-					'mask' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_SHARE
-				]);
-			}
-			return $storage;
-		});
-
-		// install storage availability wrapper, before most other wrappers
-		\OC\Files\Filesystem::addStorageWrapper('oc_availability', function ($mountPoint, \OCP\Files\Storage\IStorage $storage) {
-			if (!$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
-				return new \OC\Files\Storage\Wrapper\Availability(['storage' => $storage]);
-			}
-			return $storage;
-		});
-
-		\OC\Files\Filesystem::addStorageWrapper('oc_encoding', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
-			if ($mount->getOption('encoding_compatibility', false) && !$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
-				return new \OC\Files\Storage\Wrapper\Encoding(['storage' => $storage]);
-			}
-			return $storage;
-		});
-
-		\OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($mountPoint, $storage) {
-			// set up quota for home storages, even for other users
-			// which can happen when using sharing
-
-			/**
-			 * @var \OC\Files\Storage\Storage $storage
-			 */
-			if ($storage->instanceOfStorage('\OC\Files\Storage\Home')
-				|| $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage')
-			) {
-				/** @var \OC\Files\Storage\Home $storage */
-				if (is_object($storage->getUser())) {
-					$user = $storage->getUser()->getUID();
-					$quota = OC_Util::getUserQuota($user);
-					if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
-						return new \OC\Files\Storage\Wrapper\Quota(array('storage' => $storage, 'quota' => $quota, 'root' => 'files'));
-					}
-				}
-			}
-
-			return $storage;
-		});
-
-		\OC\Files\Filesystem::addStorageWrapper('readonly', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
-			/*
+    public static $scripts = array();
+    public static $styles = array();
+    public static $headers = array();
+    private static $rootMounted = false;
+    private static $fsSetup = false;
+
+    /** @var array Local cache of version.php */
+    private static $versionCache = null;
+
+    protected static function getAppManager() {
+        return \OC::$server->getAppManager();
+    }
+
+    private static function initLocalStorageRootFS() {
+        // mount local file backend as root
+        $configDataDirectory = \OC::$server->getSystemConfig()->getValue("datadirectory", OC::$SERVERROOT . "/data");
+        //first set up the local "root" storage
+        \OC\Files\Filesystem::initMountManager();
+        if (!self::$rootMounted) {
+            \OC\Files\Filesystem::mount('\OC\Files\Storage\Local', array('datadir' => $configDataDirectory), '/');
+            self::$rootMounted = true;
+        }
+    }
+
+    /**
+     * mounting an object storage as the root fs will in essence remove the
+     * necessity of a data folder being present.
+     * TODO make home storage aware of this and use the object storage instead of local disk access
+     *
+     * @param array $config containing 'class' and optional 'arguments'
+     * @suppress PhanDeprecatedFunction
+     */
+    private static function initObjectStoreRootFS($config) {
+        // check misconfiguration
+        if (empty($config['class'])) {
+            \OCP\Util::writeLog('files', 'No class given for objectstore', ILogger::ERROR);
+        }
+        if (!isset($config['arguments'])) {
+            $config['arguments'] = array();
+        }
+
+        // instantiate object store implementation
+        $name = $config['class'];
+        if (strpos($name, 'OCA\\') === 0 && substr_count($name, '\\') >= 2) {
+            $segments = explode('\\', $name);
+            OC_App::loadApp(strtolower($segments[1]));
+        }
+        $config['arguments']['objectstore'] = new $config['class']($config['arguments']);
+        // mount with plain / root object store implementation
+        $config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
+
+        // mount object storage as root
+        \OC\Files\Filesystem::initMountManager();
+        if (!self::$rootMounted) {
+            \OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
+            self::$rootMounted = true;
+        }
+    }
+
+    /**
+     * mounting an object storage as the root fs will in essence remove the
+     * necessity of a data folder being present.
+     *
+     * @param array $config containing 'class' and optional 'arguments'
+     * @suppress PhanDeprecatedFunction
+     */
+    private static function initObjectStoreMultibucketRootFS($config) {
+        // check misconfiguration
+        if (empty($config['class'])) {
+            \OCP\Util::writeLog('files', 'No class given for objectstore', ILogger::ERROR);
+        }
+        if (!isset($config['arguments'])) {
+            $config['arguments'] = array();
+        }
+
+        // instantiate object store implementation
+        $name = $config['class'];
+        if (strpos($name, 'OCA\\') === 0 && substr_count($name, '\\') >= 2) {
+            $segments = explode('\\', $name);
+            OC_App::loadApp(strtolower($segments[1]));
+        }
+
+        if (!isset($config['arguments']['bucket'])) {
+            $config['arguments']['bucket'] = '';
+        }
+        // put the root FS always in first bucket for multibucket configuration
+        $config['arguments']['bucket'] .= '0';
+
+        $config['arguments']['objectstore'] = new $config['class']($config['arguments']);
+        // mount with plain / root object store implementation
+        $config['class'] = '\OC\Files\ObjectStore\ObjectStoreStorage';
+
+        // mount object storage as root
+        \OC\Files\Filesystem::initMountManager();
+        if (!self::$rootMounted) {
+            \OC\Files\Filesystem::mount($config['class'], $config['arguments'], '/');
+            self::$rootMounted = true;
+        }
+    }
+
+    /**
+     * Can be set up
+     *
+     * @param string $user
+     * @return boolean
+     * @description configure the initial filesystem based on the configuration
+     * @suppress PhanDeprecatedFunction
+     * @suppress PhanAccessMethodInternal
+     */
+    public static function setupFS($user = '') {
+        //setting up the filesystem twice can only lead to trouble
+        if (self::$fsSetup) {
+            return false;
+        }
+
+        \OC::$server->getEventLogger()->start('setup_fs', 'Setup filesystem');
+
+        // If we are not forced to load a specific user we load the one that is logged in
+        if ($user === null) {
+            $user = '';
+        } else if ($user == "" && \OC::$server->getUserSession()->isLoggedIn()) {
+            $user = OC_User::getUser();
+        }
+
+        // load all filesystem apps before, so no setup-hook gets lost
+        OC_App::loadApps(array('filesystem'));
+
+        // the filesystem will finish when $user is not empty,
+        // mark fs setup here to avoid doing the setup from loading
+        // OC_Filesystem
+        if ($user != '') {
+            self::$fsSetup = true;
+        }
+
+        \OC\Files\Filesystem::initMountManager();
+
+        \OC\Files\Filesystem::logWarningWhenAddingStorageWrapper(false);
+        \OC\Files\Filesystem::addStorageWrapper('mount_options', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+            if ($storage->instanceOfStorage('\OC\Files\Storage\Common')) {
+                /** @var \OC\Files\Storage\Common $storage */
+                $storage->setMountOptions($mount->getOptions());
+            }
+            return $storage;
+        });
+
+        \OC\Files\Filesystem::addStorageWrapper('enable_sharing', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+            if (!$mount->getOption('enable_sharing', true)) {
+                return new \OC\Files\Storage\Wrapper\PermissionsMask([
+                    'storage' => $storage,
+                    'mask' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_SHARE
+                ]);
+            }
+            return $storage;
+        });
+
+        // install storage availability wrapper, before most other wrappers
+        \OC\Files\Filesystem::addStorageWrapper('oc_availability', function ($mountPoint, \OCP\Files\Storage\IStorage $storage) {
+            if (!$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
+                return new \OC\Files\Storage\Wrapper\Availability(['storage' => $storage]);
+            }
+            return $storage;
+        });
+
+        \OC\Files\Filesystem::addStorageWrapper('oc_encoding', function ($mountPoint, \OCP\Files\Storage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+            if ($mount->getOption('encoding_compatibility', false) && !$storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage') && !$storage->isLocal()) {
+                return new \OC\Files\Storage\Wrapper\Encoding(['storage' => $storage]);
+            }
+            return $storage;
+        });
+
+        \OC\Files\Filesystem::addStorageWrapper('oc_quota', function ($mountPoint, $storage) {
+            // set up quota for home storages, even for other users
+            // which can happen when using sharing
+
+            /**
+             * @var \OC\Files\Storage\Storage $storage
+             */
+            if ($storage->instanceOfStorage('\OC\Files\Storage\Home')
+                || $storage->instanceOfStorage('\OC\Files\ObjectStore\HomeObjectStoreStorage')
+            ) {
+                /** @var \OC\Files\Storage\Home $storage */
+                if (is_object($storage->getUser())) {
+                    $user = $storage->getUser()->getUID();
+                    $quota = OC_Util::getUserQuota($user);
+                    if ($quota !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
+                        return new \OC\Files\Storage\Wrapper\Quota(array('storage' => $storage, 'quota' => $quota, 'root' => 'files'));
+                    }
+                }
+            }
+
+            return $storage;
+        });
+
+        \OC\Files\Filesystem::addStorageWrapper('readonly', function ($mountPoint, \OCP\Files\Storage\IStorage $storage, \OCP\Files\Mount\IMountPoint $mount) {
+            /*
 			 * Do not allow any operations that modify the storage
 			 */
-			if ($mount->getOption('readonly', false)) {
-				return new \OC\Files\Storage\Wrapper\PermissionsMask([
-					'storage' => $storage,
-					'mask' => \OCP\Constants::PERMISSION_ALL & ~(
-						\OCP\Constants::PERMISSION_UPDATE |
-						\OCP\Constants::PERMISSION_CREATE |
-						\OCP\Constants::PERMISSION_DELETE
-					),
-				]);
-			}
-			return $storage;
-		});
-
-		OC_Hook::emit('OC_Filesystem', 'preSetup', array('user' => $user));
-		\OC\Files\Filesystem::logWarningWhenAddingStorageWrapper(true);
-
-		//check if we are using an object storage
-		$objectStore = \OC::$server->getSystemConfig()->getValue('objectstore', null);
-		$objectStoreMultibucket = \OC::$server->getSystemConfig()->getValue('objectstore_multibucket', null);
-
-		// use the same order as in ObjectHomeMountProvider
-		if (isset($objectStoreMultibucket)) {
-			self::initObjectStoreMultibucketRootFS($objectStoreMultibucket);
-		} elseif (isset($objectStore)) {
-			self::initObjectStoreRootFS($objectStore);
-		} else {
-			self::initLocalStorageRootFS();
-		}
-
-		if ($user != '' && !\OC::$server->getUserManager()->userExists($user)) {
-			\OC::$server->getEventLogger()->end('setup_fs');
-			return false;
-		}
-
-		//if we aren't logged in, there is no use to set up the filesystem
-		if ($user != "") {
-
-			$userDir = '/' . $user . '/files';
-
-			//jail the user into his "home" directory
-			\OC\Files\Filesystem::init($user, $userDir);
-
-			OC_Hook::emit('OC_Filesystem', 'setup', array('user' => $user, 'user_dir' => $userDir));
-		}
-		\OC::$server->getEventLogger()->end('setup_fs');
-		return true;
-	}
-
-	/**
-	 * check if a password is required for each public link
-	 *
-	 * @return boolean
-	 * @suppress PhanDeprecatedFunction
-	 */
-	public static function isPublicLinkPasswordRequired() {
-		$enforcePassword = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_links_password', 'no');
-		return $enforcePassword === 'yes';
-	}
-
-	/**
-	 * check if sharing is disabled for the current user
-	 * @param IConfig $config
-	 * @param IGroupManager $groupManager
-	 * @param IUser|null $user
-	 * @return bool
-	 */
-	public static function isSharingDisabledForUser(IConfig $config, IGroupManager $groupManager, $user) {
-		if ($config->getAppValue('core', 'shareapi_exclude_groups', 'no') === 'yes') {
-			$groupsList = $config->getAppValue('core', 'shareapi_exclude_groups_list', '');
-			$excludedGroups = json_decode($groupsList);
-			if (is_null($excludedGroups)) {
-				$excludedGroups = explode(',', $groupsList);
-				$newValue = json_encode($excludedGroups);
-				$config->setAppValue('core', 'shareapi_exclude_groups_list', $newValue);
-			}
-			$usersGroups = $groupManager->getUserGroupIds($user);
-			if (!empty($usersGroups)) {
-				$remainingGroups = array_diff($usersGroups, $excludedGroups);
-				// if the user is only in groups which are disabled for sharing then
-				// sharing is also disabled for the user
-				if (empty($remainingGroups)) {
-					return true;
-				}
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * check if share API enforces a default expire date
-	 *
-	 * @return boolean
-	 * @suppress PhanDeprecatedFunction
-	 */
-	public static function isDefaultExpireDateEnforced() {
-		$isDefaultExpireDateEnabled = \OC::$server->getConfig()->getAppValue('core', 'shareapi_default_expire_date', 'no');
-		$enforceDefaultExpireDate = false;
-		if ($isDefaultExpireDateEnabled === 'yes') {
-			$value = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_expire_date', 'no');
-			$enforceDefaultExpireDate = $value === 'yes';
-		}
-
-		return $enforceDefaultExpireDate;
-	}
-
-	/**
-	 * Get the quota of a user
-	 *
-	 * @param string $userId
-	 * @return float Quota bytes
-	 */
-	public static function getUserQuota($userId) {
-		$user = \OC::$server->getUserManager()->get($userId);
-		if (is_null($user)) {
-			return \OCP\Files\FileInfo::SPACE_UNLIMITED;
-		}
-		$userQuota = $user->getQuota();
-		if($userQuota === 'none') {
-			return \OCP\Files\FileInfo::SPACE_UNLIMITED;
-		}
-		return OC_Helper::computerFileSize($userQuota);
-	}
-
-	/**
-	 * copies the skeleton to the users /files
-	 *
-	 * @param String $userId
-	 * @param \OCP\Files\Folder $userDirectory
-	 * @throws \RuntimeException
-	 * @suppress PhanDeprecatedFunction
-	 */
-	public static function copySkeleton($userId, \OCP\Files\Folder $userDirectory) {
-
-		$plainSkeletonDirectory = \OC::$server->getConfig()->getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton');
-		$userLang = \OC::$server->getL10NFactory()->findLanguage();
-		$skeletonDirectory = str_replace('{lang}', $userLang, $plainSkeletonDirectory);
-
-		if (!file_exists($skeletonDirectory)) {
-			$dialectStart = strpos($userLang, '_');
-			if ($dialectStart !== false) {
-				$skeletonDirectory = str_replace('{lang}', substr($userLang, 0, $dialectStart), $plainSkeletonDirectory);
-			}
-			if ($dialectStart === false || !file_exists($skeletonDirectory)) {
-				$skeletonDirectory = str_replace('{lang}', 'default', $plainSkeletonDirectory);
-			}
-			if (!file_exists($skeletonDirectory)) {
-				$skeletonDirectory = '';
-			}
-		}
-
-		$instanceId = \OC::$server->getConfig()->getSystemValue('instanceid', '');
-
-		if ($instanceId === null) {
-			throw new \RuntimeException('no instance id!');
-		}
-		$appdata = 'appdata_' . $instanceId;
-		if ($userId === $appdata) {
-			throw new \RuntimeException('username is reserved name: ' . $appdata);
-		}
-
-		if (!empty($skeletonDirectory)) {
-			\OCP\Util::writeLog(
-				'files_skeleton',
-				'copying skeleton for '.$userId.' from '.$skeletonDirectory.' to '.$userDirectory->getFullPath('/'),
-				ILogger::DEBUG
-			);
-			self::copyr($skeletonDirectory, $userDirectory);
-			// update the file cache
-			$userDirectory->getStorage()->getScanner()->scan('', \OC\Files\Cache\Scanner::SCAN_RECURSIVE);
-		}
-	}
-
-	/**
-	 * copies a directory recursively by using streams
-	 *
-	 * @param string $source
-	 * @param \OCP\Files\Folder $target
-	 * @return void
-	 */
-	public static function copyr($source, \OCP\Files\Folder $target) {
-		$logger = \OC::$server->getLogger();
-
-		// Verify if folder exists
-		$dir = opendir($source);
-		if($dir === false) {
-			$logger->error(sprintf('Could not opendir "%s"', $source), ['app' => 'core']);
-			return;
-		}
-
-		// Copy the files
-		while (false !== ($file = readdir($dir))) {
-			if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
-				if (is_dir($source . '/' . $file)) {
-					$child = $target->newFolder($file);
-					self::copyr($source . '/' . $file, $child);
-				} else {
-					$child = $target->newFile($file);
-					$sourceStream = fopen($source . '/' . $file, 'r');
-					if($sourceStream === false) {
-						$logger->error(sprintf('Could not fopen "%s"', $source . '/' . $file), ['app' => 'core']);
-						closedir($dir);
-						return;
-					}
-					stream_copy_to_stream($sourceStream, $child->fopen('w'));
-				}
-			}
-		}
-		closedir($dir);
-	}
-
-	/**
-	 * @return void
-	 * @suppress PhanUndeclaredMethod
-	 */
-	public static function tearDownFS() {
-		\OC\Files\Filesystem::tearDown();
-		\OC::$server->getRootFolder()->clearCache();
-		self::$fsSetup = false;
-		self::$rootMounted = false;
-	}
-
-	/**
-	 * get the current installed version of ownCloud
-	 *
-	 * @return array
-	 */
-	public static function getVersion() {
-		OC_Util::loadVersion();
-		return self::$versionCache['OC_Version'];
-	}
-
-	/**
-	 * get the current installed version string of ownCloud
-	 *
-	 * @return string
-	 */
-	public static function getVersionString() {
-		OC_Util::loadVersion();
-		return self::$versionCache['OC_VersionString'];
-	}
-
-	/**
-	 * @deprecated the value is of no use anymore
-	 * @return string
-	 */
-	public static function getEditionString() {
-		return '';
-	}
-
-	/**
-	 * @description get the update channel of the current installed of ownCloud.
-	 * @return string
-	 */
-	public static function getChannel() {
-		OC_Util::loadVersion();
-		return \OC::$server->getConfig()->getSystemValue('updater.release.channel', self::$versionCache['OC_Channel']);
-	}
-
-	/**
-	 * @description get the build number of the current installed of ownCloud.
-	 * @return string
-	 */
-	public static function getBuild() {
-		OC_Util::loadVersion();
-		return self::$versionCache['OC_Build'];
-	}
-
-	/**
-	 * @description load the version.php into the session as cache
-	 * @suppress PhanUndeclaredVariable
-	 */
-	private static function loadVersion() {
-		if (self::$versionCache !== null) {
-			return;
-		}
-
-		$timestamp = filemtime(OC::$SERVERROOT . '/version.php');
-		require OC::$SERVERROOT . '/version.php';
-		/** @var $timestamp int */
-		self::$versionCache['OC_Version_Timestamp'] = $timestamp;
-		/** @var $OC_Version string */
-		self::$versionCache['OC_Version'] = $OC_Version;
-		/** @var $OC_VersionString string */
-		self::$versionCache['OC_VersionString'] = $OC_VersionString;
-		/** @var $OC_Build string */
-		self::$versionCache['OC_Build'] = $OC_Build;
-
-		/** @var $OC_Channel string */
-		self::$versionCache['OC_Channel'] = $OC_Channel;
-	}
-
-	/**
-	 * generates a path for JS/CSS files. If no application is provided it will create the path for core.
-	 *
-	 * @param string $application application to get the files from
-	 * @param string $directory directory within this application (css, js, vendor, etc)
-	 * @param string $file the file inside of the above folder
-	 * @return string the path
-	 */
-	private static function generatePath($application, $directory, $file) {
-		if (is_null($file)) {
-			$file = $application;
-			$application = "";
-		}
-		if (!empty($application)) {
-			return "$application/$directory/$file";
-		} else {
-			return "$directory/$file";
-		}
-	}
-
-	/**
-	 * add a javascript file
-	 *
-	 * @param string $application application id
-	 * @param string|null $file filename
-	 * @param bool $prepend prepend the Script to the beginning of the list
-	 * @return void
-	 */
-	public static function addScript($application, $file = null, $prepend = false) {
-		$path = OC_Util::generatePath($application, 'js', $file);
-
-		// core js files need separate handling
-		if ($application !== 'core' && $file !== null) {
-			self::addTranslations ( $application );
-		}
-		self::addExternalResource($application, $prepend, $path, "script");
-	}
-
-	/**
-	 * add a javascript file from the vendor sub folder
-	 *
-	 * @param string $application application id
-	 * @param string|null $file filename
-	 * @param bool $prepend prepend the Script to the beginning of the list
-	 * @return void
-	 */
-	public static function addVendorScript($application, $file = null, $prepend = false) {
-		$path = OC_Util::generatePath($application, 'vendor', $file);
-		self::addExternalResource($application, $prepend, $path, "script");
-	}
-
-	/**
-	 * add a translation JS file
-	 *
-	 * @param string $application application id
-	 * @param string|null $languageCode language code, defaults to the current language
-	 * @param bool|null $prepend prepend the Script to the beginning of the list
-	 */
-	public static function addTranslations($application, $languageCode = null, $prepend = false) {
-		if (is_null($languageCode)) {
-			$languageCode = \OC::$server->getL10NFactory()->findLanguage($application);
-		}
-		if (!empty($application)) {
-			$path = "$application/l10n/$languageCode";
-		} else {
-			$path = "l10n/$languageCode";
-		}
-		self::addExternalResource($application, $prepend, $path, "script");
-	}
-
-	/**
-	 * add a css file
-	 *
-	 * @param string $application application id
-	 * @param string|null $file filename
-	 * @param bool $prepend prepend the Style to the beginning of the list
-	 * @return void
-	 */
-	public static function addStyle($application, $file = null, $prepend = false) {
-		$path = OC_Util::generatePath($application, 'css', $file);
-		self::addExternalResource($application, $prepend, $path, "style");
-	}
-
-	/**
-	 * add a css file from the vendor sub folder
-	 *
-	 * @param string $application application id
-	 * @param string|null $file filename
-	 * @param bool $prepend prepend the Style to the beginning of the list
-	 * @return void
-	 */
-	public static function addVendorStyle($application, $file = null, $prepend = false) {
-		$path = OC_Util::generatePath($application, 'vendor', $file);
-		self::addExternalResource($application, $prepend, $path, "style");
-	}
-
-	/**
-	 * add an external resource css/js file
-	 *
-	 * @param string $application application id
-	 * @param bool $prepend prepend the file to the beginning of the list
-	 * @param string $path
-	 * @param string $type (script or style)
-	 * @return void
-	 */
-	private static function addExternalResource($application, $prepend, $path, $type = "script") {
-
-		if ($type === "style") {
-			if (!in_array($path, self::$styles)) {
-				if ($prepend === true) {
-					array_unshift ( self::$styles, $path );
-				} else {
-					self::$styles[] = $path;
-				}
-			}
-		} elseif ($type === "script") {
-			if (!in_array($path, self::$scripts)) {
-				if ($prepend === true) {
-					array_unshift ( self::$scripts, $path );
-				} else {
-					self::$scripts [] = $path;
-				}
-			}
-		}
-	}
-
-	/**
-	 * Add a custom element to the header
-	 * If $text is null then the element will be written as empty element.
-	 * So use "" to get a closing tag.
-	 * @param string $tag tag name of the element
-	 * @param array $attributes array of attributes for the element
-	 * @param string $text the text content for the element
-	 */
-	public static function addHeader($tag, $attributes, $text=null) {
-		self::$headers[] = array(
-			'tag' => $tag,
-			'attributes' => $attributes,
-			'text' => $text
-		);
-	}
-
-	/**
-	 * check if the current server configuration is suitable for ownCloud
-	 *
-	 * @param \OC\SystemConfig $config
-	 * @return array arrays with error messages and hints
-	 */
-	public static function checkServer(\OC\SystemConfig $config) {
-		$l = \OC::$server->getL10N('lib');
-		$errors = array();
-		$CONFIG_DATADIRECTORY = $config->getValue('datadirectory', OC::$SERVERROOT . '/data');
-
-		if (!self::needUpgrade($config) && $config->getValue('installed', false)) {
-			// this check needs to be done every time
-			$errors = self::checkDataDirectoryValidity($CONFIG_DATADIRECTORY);
-		}
-
-		// Assume that if checkServer() succeeded before in this session, then all is fine.
-		if (\OC::$server->getSession()->exists('checkServer_succeeded') && \OC::$server->getSession()->get('checkServer_succeeded')) {
-			return $errors;
-		}
-
-		$webServerRestart = false;
-		$setup = new \OC\Setup(
-			$config,
-			\OC::$server->getIniWrapper(),
-			\OC::$server->getL10N('lib'),
-			\OC::$server->query(\OCP\Defaults::class),
-			\OC::$server->getLogger(),
-			\OC::$server->getSecureRandom(),
-			\OC::$server->query(\OC\Installer::class)
-		);
-
-		$urlGenerator = \OC::$server->getURLGenerator();
-
-		$availableDatabases = $setup->getSupportedDatabases();
-		if (empty($availableDatabases)) {
-			$errors[] = array(
-				'error' => $l->t('No database drivers (sqlite, mysql, or postgresql) installed.'),
-				'hint' => '' //TODO: sane hint
-			);
-			$webServerRestart = true;
-		}
-
-		// Check if config folder is writable.
-		if(!OC_Helper::isReadOnlyConfigEnabled()) {
-			if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) {
-				$errors[] = array(
-					'error' => $l->t('Cannot write into "config" directory'),
-					'hint' => $l->t('This can usually be fixed by giving the webserver write access to the config directory. See %s',
-						[$urlGenerator->linkToDocs('admin-dir_permissions')])
-				);
-			}
-		}
-
-		// Check if there is a writable install folder.
-		if ($config->getValue('appstoreenabled', true)) {
-			if (OC_App::getInstallPath() === null
-				|| !is_writable(OC_App::getInstallPath())
-				|| !is_readable(OC_App::getInstallPath())
-			) {
-				$errors[] = array(
-					'error' => $l->t('Cannot write into "apps" directory'),
-					'hint' => $l->t('This can usually be fixed by giving the webserver write access to the apps directory'
-						. ' or disabling the appstore in the config file. See %s',
-						[$urlGenerator->linkToDocs('admin-dir_permissions')])
-				);
-			}
-		}
-		// Create root dir.
-		if ($config->getValue('installed', false)) {
-			if (!is_dir($CONFIG_DATADIRECTORY)) {
-				$success = @mkdir($CONFIG_DATADIRECTORY);
-				if ($success) {
-					$errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
-				} else {
-					$errors[] = [
-						'error' => $l->t('Cannot create "data" directory'),
-						'hint' => $l->t('This can usually be fixed by giving the webserver write access to the root directory. See %s',
-							[$urlGenerator->linkToDocs('admin-dir_permissions')])
-					];
-				}
-			} else if (!is_writable($CONFIG_DATADIRECTORY) or !is_readable($CONFIG_DATADIRECTORY)) {
-				//common hint for all file permissions error messages
-				$permissionsHint = $l->t('Permissions can usually be fixed by giving the webserver write access to the root directory. See %s.',
-					[$urlGenerator->linkToDocs('admin-dir_permissions')]);
-				$errors[] = [
-					'error' => 'Your data directory is not writable',
-					'hint' => $permissionsHint
-				];
-			} else {
-				$errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
-			}
-		}
-
-		if (!OC_Util::isSetLocaleWorking()) {
-			$errors[] = array(
-				'error' => $l->t('Setting locale to %s failed',
-					array('en_US.UTF-8/fr_FR.UTF-8/es_ES.UTF-8/de_DE.UTF-8/ru_RU.UTF-8/'
-						. 'pt_BR.UTF-8/it_IT.UTF-8/ja_JP.UTF-8/zh_CN.UTF-8')),
-				'hint' => $l->t('Please install one of these locales on your system and restart your webserver.')
-			);
-		}
-
-		// Contains the dependencies that should be checked against
-		// classes = class_exists
-		// functions = function_exists
-		// defined = defined
-		// ini = ini_get
-		// If the dependency is not found the missing module name is shown to the EndUser
-		// When adding new checks always verify that they pass on Travis as well
-		// for ini settings, see https://github.com/owncloud/administration/blob/master/travis-ci/custom.ini
-		$dependencies = array(
-			'classes' => array(
-				'ZipArchive' => 'zip',
-				'DOMDocument' => 'dom',
-				'XMLWriter' => 'XMLWriter',
-				'XMLReader' => 'XMLReader',
-			),
-			'functions' => [
-				'xml_parser_create' => 'libxml',
-				'mb_strcut' => 'mb multibyte',
-				'ctype_digit' => 'ctype',
-				'json_encode' => 'JSON',
-				'gd_info' => 'GD',
-				'gzencode' => 'zlib',
-				'iconv' => 'iconv',
-				'simplexml_load_string' => 'SimpleXML',
-				'hash' => 'HASH Message Digest Framework',
-				'curl_init' => 'cURL',
-				'openssl_verify' => 'OpenSSL',
-			],
-			'defined' => array(
-				'PDO::ATTR_DRIVER_NAME' => 'PDO'
-			),
-			'ini' => [
-				'default_charset' => 'UTF-8',
-			],
-		);
-		$missingDependencies = array();
-		$invalidIniSettings = [];
-		$moduleHint = $l->t('Please ask your server administrator to install the module.');
-
-		/**
-		 * FIXME: The dependency check does not work properly on HHVM on the moment
-		 *        and prevents installation. Once HHVM is more compatible with our
-		 *        approach to check for these values we should re-enable those
-		 *        checks.
-		 */
-		$iniWrapper = \OC::$server->getIniWrapper();
-		if (!self::runningOnHhvm()) {
-			foreach ($dependencies['classes'] as $class => $module) {
-				if (!class_exists($class)) {
-					$missingDependencies[] = $module;
-				}
-			}
-			foreach ($dependencies['functions'] as $function => $module) {
-				if (!function_exists($function)) {
-					$missingDependencies[] = $module;
-				}
-			}
-			foreach ($dependencies['defined'] as $defined => $module) {
-				if (!defined($defined)) {
-					$missingDependencies[] = $module;
-				}
-			}
-			foreach ($dependencies['ini'] as $setting => $expected) {
-				if (is_bool($expected)) {
-					if ($iniWrapper->getBool($setting) !== $expected) {
-						$invalidIniSettings[] = [$setting, $expected];
-					}
-				}
-				if (is_int($expected)) {
-					if ($iniWrapper->getNumeric($setting) !== $expected) {
-						$invalidIniSettings[] = [$setting, $expected];
-					}
-				}
-				if (is_string($expected)) {
-					if (strtolower($iniWrapper->getString($setting)) !== strtolower($expected)) {
-						$invalidIniSettings[] = [$setting, $expected];
-					}
-				}
-			}
-		}
-
-		foreach($missingDependencies as $missingDependency) {
-			$errors[] = array(
-				'error' => $l->t('PHP module %s not installed.', array($missingDependency)),
-				'hint' => $moduleHint
-			);
-			$webServerRestart = true;
-		}
-		foreach($invalidIniSettings as $setting) {
-			if(is_bool($setting[1])) {
-				$setting[1] = $setting[1] ? 'on' : 'off';
-			}
-			$errors[] = [
-				'error' => $l->t('PHP setting "%s" is not set to "%s".', [$setting[0], var_export($setting[1], true)]),
-				'hint' =>  $l->t('Adjusting this setting in php.ini will make Nextcloud run again')
-			];
-			$webServerRestart = true;
-		}
-
-		/**
-		 * The mbstring.func_overload check can only be performed if the mbstring
-		 * module is installed as it will return null if the checking setting is
-		 * not available and thus a check on the boolean value fails.
-		 *
-		 * TODO: Should probably be implemented in the above generic dependency
-		 *       check somehow in the long-term.
-		 */
-		if($iniWrapper->getBool('mbstring.func_overload') !== null &&
-			$iniWrapper->getBool('mbstring.func_overload') === true) {
-			$errors[] = array(
-				'error' => $l->t('mbstring.func_overload is set to "%s" instead of the expected value "0"', [$iniWrapper->getString('mbstring.func_overload')]),
-				'hint' => $l->t('To fix this issue set <code>mbstring.func_overload</code> to <code>0</code> in your php.ini')
-			);
-		}
-
-		if(function_exists('xml_parser_create') &&
-			LIBXML_LOADED_VERSION < 20700 ) {
-			$version = LIBXML_LOADED_VERSION;
-			$major = floor($version/10000);
-			$version -= ($major * 10000);
-			$minor = floor($version/100);
-			$version -= ($minor * 100);
-			$patch = $version;
-			$errors[] = array(
-				'error' => $l->t('libxml2 2.7.0 is at least required. Currently %s is installed.', [$major . '.' . $minor . '.' . $patch]),
-				'hint' => $l->t('To fix this issue update your libxml2 version and restart your web server.')
-			);
-		}
-
-		if (!self::isAnnotationsWorking()) {
-			$errors[] = array(
-				'error' => $l->t('PHP is apparently set up to strip inline doc blocks. This will make several core apps inaccessible.'),
-				'hint' => $l->t('This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.')
-			);
-		}
-
-		if (!\OC::$CLI && $webServerRestart) {
-			$errors[] = array(
-				'error' => $l->t('PHP modules have been installed, but they are still listed as missing?'),
-				'hint' => $l->t('Please ask your server administrator to restart the web server.')
-			);
-		}
-
-		$errors = array_merge($errors, self::checkDatabaseVersion());
-
-		// Cache the result of this function
-		\OC::$server->getSession()->set('checkServer_succeeded', count($errors) == 0);
-
-		return $errors;
-	}
-
-	/**
-	 * Check the database version
-	 *
-	 * @return array errors array
-	 */
-	public static function checkDatabaseVersion() {
-		$l = \OC::$server->getL10N('lib');
-		$errors = array();
-		$dbType = \OC::$server->getSystemConfig()->getValue('dbtype', 'sqlite');
-		if ($dbType === 'pgsql') {
-			// check PostgreSQL version
-			try {
-				$result = \OC_DB::executeAudited('SHOW SERVER_VERSION');
-				$data = $result->fetchRow();
-				if (isset($data['server_version'])) {
-					$version = $data['server_version'];
-					if (version_compare($version, '9.0.0', '<')) {
-						$errors[] = array(
-							'error' => $l->t('PostgreSQL >= 9 required'),
-							'hint' => $l->t('Please upgrade your database version')
-						);
-					}
-				}
-			} catch (\Doctrine\DBAL\DBALException $e) {
-				$logger = \OC::$server->getLogger();
-				$logger->warning('Error occurred while checking PostgreSQL version, assuming >= 9');
-				$logger->logException($e);
-			}
-		}
-		return $errors;
-	}
-
-	/**
-	 * Check for correct file permissions of data directory
-	 *
-	 * @param string $dataDirectory
-	 * @return array arrays with error messages and hints
-	 */
-	public static function checkDataDirectoryPermissions($dataDirectory) {
-		if(\OC::$server->getConfig()->getSystemValue('check_data_directory_permissions', true) === false) {
-			return  [];
-		}
-		$l = \OC::$server->getL10N('lib');
-		$errors = [];
-		$permissionsModHint = $l->t('Please change the permissions to 0770 so that the directory'
-			. ' cannot be listed by other users.');
-		$perms = substr(decoct(@fileperms($dataDirectory)), -3);
-		if (substr($perms, -1) !== '0') {
-			chmod($dataDirectory, 0770);
-			clearstatcache();
-			$perms = substr(decoct(@fileperms($dataDirectory)), -3);
-			if ($perms[2] !== '0') {
-				$errors[] = [
-					'error' => $l->t('Your data directory is readable by other users'),
-					'hint' => $permissionsModHint
-				];
-			}
-		}
-		return $errors;
-	}
-
-	/**
-	 * Check that the data directory exists and is valid by
-	 * checking the existence of the ".ocdata" file.
-	 *
-	 * @param string $dataDirectory data directory path
-	 * @return array errors found
-	 */
-	public static function checkDataDirectoryValidity($dataDirectory) {
-		$l = \OC::$server->getL10N('lib');
-		$errors = [];
-		if ($dataDirectory[0] !== '/') {
-			$errors[] = [
-				'error' => $l->t('Your data directory must be an absolute path'),
-				'hint' => $l->t('Check the value of "datadirectory" in your configuration')
-			];
-		}
-		if (!file_exists($dataDirectory . '/.ocdata')) {
-			$errors[] = [
-				'error' => $l->t('Your data directory is invalid'),
-				'hint' => $l->t('Ensure there is a file called ".ocdata"' .
-					' in the root of the data directory.')
-			];
-		}
-		return $errors;
-	}
-
-	/**
-	 * Check if the user is logged in, redirects to home if not. With
-	 * redirect URL parameter to the request URI.
-	 *
-	 * @return void
-	 */
-	public static function checkLoggedIn() {
-		// Check if we are a user
-		if (!\OC::$server->getUserSession()->isLoggedIn()) {
-			header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute(
-						'core.login.showLoginForm',
-						[
-							'redirect_url' => \OC::$server->getRequest()->getRequestUri(),
-						]
-					)
-			);
-			exit();
-		}
-		// Redirect to 2FA challenge selection if 2FA challenge was not solved yet
-		if (\OC::$server->getTwoFactorAuthManager()->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
-			header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
-			exit();
-		}
-	}
-
-	/**
-	 * Check if the user is a admin, redirects to home if not
-	 *
-	 * @return void
-	 */
-	public static function checkAdminUser() {
-		OC_Util::checkLoggedIn();
-		if (!OC_User::isAdminUser(OC_User::getUser())) {
-			header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
-			exit();
-		}
-	}
-
-	/**
-	 * Check if the user is a subadmin, redirects to home if not
-	 *
-	 * @return null|boolean $groups where the current user is subadmin
-	 */
-	public static function checkSubAdminUser() {
-		OC_Util::checkLoggedIn();
-		$userObject = \OC::$server->getUserSession()->getUser();
-		$isSubAdmin = false;
-		if($userObject !== null) {
-			$isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
-		}
-
-		if (!$isSubAdmin) {
-			header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
-			exit();
-		}
-		return true;
-	}
-
-	/**
-	 * Returns the URL of the default page
-	 * based on the system configuration and
-	 * the apps visible for the current user
-	 *
-	 * @return string URL
-	 * @suppress PhanDeprecatedFunction
-	 */
-	public static function getDefaultPageUrl() {
-		$urlGenerator = \OC::$server->getURLGenerator();
-		// Deny the redirect if the URL contains a @
-		// This prevents unvalidated redirects like ?redirect_url=:user@domain.com
-		if (isset($_REQUEST['redirect_url']) && strpos($_REQUEST['redirect_url'], '@') === false) {
-			$location = $urlGenerator->getAbsoluteURL(urldecode($_REQUEST['redirect_url']));
-		} else {
-			$defaultPage = \OC::$server->getConfig()->getAppValue('core', 'defaultpage');
-			if ($defaultPage) {
-				$location = $urlGenerator->getAbsoluteURL($defaultPage);
-			} else {
-				$appId = 'files';
-				$config = \OC::$server->getConfig();
-				$defaultApps = explode(',', $config->getSystemValue('defaultapp', 'files'));
-				// find the first app that is enabled for the current user
-				foreach ($defaultApps as $defaultApp) {
-					$defaultApp = OC_App::cleanAppId(strip_tags($defaultApp));
-					if (static::getAppManager()->isEnabledForUser($defaultApp)) {
-						$appId = $defaultApp;
-						break;
-					}
-				}
-
-				if($config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true') {
-					$location = $urlGenerator->getAbsoluteURL('/apps/' . $appId . '/');
-				} else {
-					$location = $urlGenerator->getAbsoluteURL('/index.php/apps/' . $appId . '/');
-				}
-			}
-		}
-		return $location;
-	}
-
-	/**
-	 * Redirect to the user default page
-	 *
-	 * @return void
-	 */
-	public static function redirectToDefaultPage() {
-		$location = self::getDefaultPageUrl();
-		header('Location: ' . $location);
-		exit();
-	}
-
-	/**
-	 * get an id unique for this instance
-	 *
-	 * @return string
-	 */
-	public static function getInstanceId() {
-		$id = \OC::$server->getSystemConfig()->getValue('instanceid', null);
-		if (is_null($id)) {
-			// We need to guarantee at least one letter in instanceid so it can be used as the session_name
-			$id = 'oc' . \OC::$server->getSecureRandom()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
-			\OC::$server->getSystemConfig()->setValue('instanceid', $id);
-		}
-		return $id;
-	}
-
-	/**
-	 * Public function to sanitize HTML
-	 *
-	 * This function is used to sanitize HTML and should be applied on any
-	 * string or array of strings before displaying it on a web page.
-	 *
-	 * @param string|array $value
-	 * @return string|array an array of sanitized strings or a single sanitized string, depends on the input parameter.
-	 */
-	public static function sanitizeHTML($value) {
-		if (is_array($value)) {
-			$value = array_map(function($value) {
-				return self::sanitizeHTML($value);
-			}, $value);
-		} else {
-			// Specify encoding for PHP<5.4
-			$value = htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8');
-		}
-		return $value;
-	}
-
-	/**
-	 * Public function to encode url parameters
-	 *
-	 * This function is used to encode path to file before output.
-	 * Encoding is done according to RFC 3986 with one exception:
-	 * Character '/' is preserved as is.
-	 *
-	 * @param string $component part of URI to encode
-	 * @return string
-	 */
-	public static function encodePath($component) {
-		$encoded = rawurlencode($component);
-		$encoded = str_replace('%2F', '/', $encoded);
-		return $encoded;
-	}
-
-
-	public function createHtaccessTestFile(\OCP\IConfig $config) {
-		// php dev server does not support htaccess
-		if (php_sapi_name() === 'cli-server') {
-			return false;
-		}
-
-		// testdata
-		$fileName = '/htaccesstest.txt';
-		$testContent = 'This is used for testing whether htaccess is properly enabled to disallow access from the outside. This file can be safely removed.';
-
-		// creating a test file
-		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
-
-		if (file_exists($testFile)) {// already running this test, possible recursive call
-			return false;
-		}
-
-		$fp = @fopen($testFile, 'w');
-		if (!$fp) {
-			throw new OC\HintException('Can\'t create test file to check for working .htaccess file.',
-				'Make sure it is possible for the webserver to write to ' . $testFile);
-		}
-		fwrite($fp, $testContent);
-		fclose($fp);
-
-		return $testContent;
-	}
-
-	/**
-	 * Check if the .htaccess file is working
-	 * @param \OCP\IConfig $config
-	 * @return bool
-	 * @throws Exception
-	 * @throws \OC\HintException If the test file can't get written.
-	 */
-	public function isHtaccessWorking(\OCP\IConfig $config) {
-
-		if (\OC::$CLI || !$config->getSystemValue('check_for_working_htaccess', true)) {
-			return true;
-		}
-
-		$testContent = $this->createHtaccessTestFile($config);
-		if ($testContent === false) {
-			return false;
-		}
-
-		$fileName = '/htaccesstest.txt';
-		$testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
-
-		// accessing the file via http
-		$url = \OC::$server->getURLGenerator()->getAbsoluteURL(OC::$WEBROOT . '/data' . $fileName);
-		try {
-			$content = \OC::$server->getHTTPClientService()->newClient()->get($url)->getBody();
-		} catch (\Exception $e) {
-			$content = false;
-		}
-
-		// cleanup
-		@unlink($testFile);
-
-		/*
+            if ($mount->getOption('readonly', false)) {
+                return new \OC\Files\Storage\Wrapper\PermissionsMask([
+                    'storage' => $storage,
+                    'mask' => \OCP\Constants::PERMISSION_ALL & ~(
+                        \OCP\Constants::PERMISSION_UPDATE |
+                        \OCP\Constants::PERMISSION_CREATE |
+                        \OCP\Constants::PERMISSION_DELETE
+                    ),
+                ]);
+            }
+            return $storage;
+        });
+
+        OC_Hook::emit('OC_Filesystem', 'preSetup', array('user' => $user));
+        \OC\Files\Filesystem::logWarningWhenAddingStorageWrapper(true);
+
+        //check if we are using an object storage
+        $objectStore = \OC::$server->getSystemConfig()->getValue('objectstore', null);
+        $objectStoreMultibucket = \OC::$server->getSystemConfig()->getValue('objectstore_multibucket', null);
+
+        // use the same order as in ObjectHomeMountProvider
+        if (isset($objectStoreMultibucket)) {
+            self::initObjectStoreMultibucketRootFS($objectStoreMultibucket);
+        } elseif (isset($objectStore)) {
+            self::initObjectStoreRootFS($objectStore);
+        } else {
+            self::initLocalStorageRootFS();
+        }
+
+        if ($user != '' && !\OC::$server->getUserManager()->userExists($user)) {
+            \OC::$server->getEventLogger()->end('setup_fs');
+            return false;
+        }
+
+        //if we aren't logged in, there is no use to set up the filesystem
+        if ($user != "") {
+
+            $userDir = '/' . $user . '/files';
+
+            //jail the user into his "home" directory
+            \OC\Files\Filesystem::init($user, $userDir);
+
+            OC_Hook::emit('OC_Filesystem', 'setup', array('user' => $user, 'user_dir' => $userDir));
+        }
+        \OC::$server->getEventLogger()->end('setup_fs');
+        return true;
+    }
+
+    /**
+     * check if a password is required for each public link
+     *
+     * @return boolean
+     * @suppress PhanDeprecatedFunction
+     */
+    public static function isPublicLinkPasswordRequired() {
+        $enforcePassword = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_links_password', 'no');
+        return $enforcePassword === 'yes';
+    }
+
+    /**
+     * check if sharing is disabled for the current user
+     * @param IConfig $config
+     * @param IGroupManager $groupManager
+     * @param IUser|null $user
+     * @return bool
+     */
+    public static function isSharingDisabledForUser(IConfig $config, IGroupManager $groupManager, $user) {
+        if ($config->getAppValue('core', 'shareapi_exclude_groups', 'no') === 'yes') {
+            $groupsList = $config->getAppValue('core', 'shareapi_exclude_groups_list', '');
+            $excludedGroups = json_decode($groupsList);
+            if (is_null($excludedGroups)) {
+                $excludedGroups = explode(',', $groupsList);
+                $newValue = json_encode($excludedGroups);
+                $config->setAppValue('core', 'shareapi_exclude_groups_list', $newValue);
+            }
+            $usersGroups = $groupManager->getUserGroupIds($user);
+            if (!empty($usersGroups)) {
+                $remainingGroups = array_diff($usersGroups, $excludedGroups);
+                // if the user is only in groups which are disabled for sharing then
+                // sharing is also disabled for the user
+                if (empty($remainingGroups)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * check if share API enforces a default expire date
+     *
+     * @return boolean
+     * @suppress PhanDeprecatedFunction
+     */
+    public static function isDefaultExpireDateEnforced() {
+        $isDefaultExpireDateEnabled = \OC::$server->getConfig()->getAppValue('core', 'shareapi_default_expire_date', 'no');
+        $enforceDefaultExpireDate = false;
+        if ($isDefaultExpireDateEnabled === 'yes') {
+            $value = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_expire_date', 'no');
+            $enforceDefaultExpireDate = $value === 'yes';
+        }
+
+        return $enforceDefaultExpireDate;
+    }
+
+    /**
+     * Get the quota of a user
+     *
+     * @param string $userId
+     * @return float Quota bytes
+     */
+    public static function getUserQuota($userId) {
+        $user = \OC::$server->getUserManager()->get($userId);
+        if (is_null($user)) {
+            return \OCP\Files\FileInfo::SPACE_UNLIMITED;
+        }
+        $userQuota = $user->getQuota();
+        if($userQuota === 'none') {
+            return \OCP\Files\FileInfo::SPACE_UNLIMITED;
+        }
+        return OC_Helper::computerFileSize($userQuota);
+    }
+
+    /**
+     * copies the skeleton to the users /files
+     *
+     * @param String $userId
+     * @param \OCP\Files\Folder $userDirectory
+     * @throws \RuntimeException
+     * @suppress PhanDeprecatedFunction
+     */
+    public static function copySkeleton($userId, \OCP\Files\Folder $userDirectory) {
+
+        $plainSkeletonDirectory = \OC::$server->getConfig()->getSystemValue('skeletondirectory', \OC::$SERVERROOT . '/core/skeleton');
+        $userLang = \OC::$server->getL10NFactory()->findLanguage();
+        $skeletonDirectory = str_replace('{lang}', $userLang, $plainSkeletonDirectory);
+
+        if (!file_exists($skeletonDirectory)) {
+            $dialectStart = strpos($userLang, '_');
+            if ($dialectStart !== false) {
+                $skeletonDirectory = str_replace('{lang}', substr($userLang, 0, $dialectStart), $plainSkeletonDirectory);
+            }
+            if ($dialectStart === false || !file_exists($skeletonDirectory)) {
+                $skeletonDirectory = str_replace('{lang}', 'default', $plainSkeletonDirectory);
+            }
+            if (!file_exists($skeletonDirectory)) {
+                $skeletonDirectory = '';
+            }
+        }
+
+        $instanceId = \OC::$server->getConfig()->getSystemValue('instanceid', '');
+
+        if ($instanceId === null) {
+            throw new \RuntimeException('no instance id!');
+        }
+        $appdata = 'appdata_' . $instanceId;
+        if ($userId === $appdata) {
+            throw new \RuntimeException('username is reserved name: ' . $appdata);
+        }
+
+        if (!empty($skeletonDirectory)) {
+            \OCP\Util::writeLog(
+                'files_skeleton',
+                'copying skeleton for '.$userId.' from '.$skeletonDirectory.' to '.$userDirectory->getFullPath('/'),
+                ILogger::DEBUG
+            );
+            self::copyr($skeletonDirectory, $userDirectory);
+            // update the file cache
+            $userDirectory->getStorage()->getScanner()->scan('', \OC\Files\Cache\Scanner::SCAN_RECURSIVE);
+        }
+    }
+
+    /**
+     * copies a directory recursively by using streams
+     *
+     * @param string $source
+     * @param \OCP\Files\Folder $target
+     * @return void
+     */
+    public static function copyr($source, \OCP\Files\Folder $target) {
+        $logger = \OC::$server->getLogger();
+
+        // Verify if folder exists
+        $dir = opendir($source);
+        if($dir === false) {
+            $logger->error(sprintf('Could not opendir "%s"', $source), ['app' => 'core']);
+            return;
+        }
+
+        // Copy the files
+        while (false !== ($file = readdir($dir))) {
+            if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
+                if (is_dir($source . '/' . $file)) {
+                    $child = $target->newFolder($file);
+                    self::copyr($source . '/' . $file, $child);
+                } else {
+                    $child = $target->newFile($file);
+                    $sourceStream = fopen($source . '/' . $file, 'r');
+                    if($sourceStream === false) {
+                        $logger->error(sprintf('Could not fopen "%s"', $source . '/' . $file), ['app' => 'core']);
+                        closedir($dir);
+                        return;
+                    }
+                    stream_copy_to_stream($sourceStream, $child->fopen('w'));
+                }
+            }
+        }
+        closedir($dir);
+    }
+
+    /**
+     * @return void
+     * @suppress PhanUndeclaredMethod
+     */
+    public static function tearDownFS() {
+        \OC\Files\Filesystem::tearDown();
+        \OC::$server->getRootFolder()->clearCache();
+        self::$fsSetup = false;
+        self::$rootMounted = false;
+    }
+
+    /**
+     * get the current installed version of ownCloud
+     *
+     * @return array
+     */
+    public static function getVersion() {
+        OC_Util::loadVersion();
+        return self::$versionCache['OC_Version'];
+    }
+
+    /**
+     * get the current installed version string of ownCloud
+     *
+     * @return string
+     */
+    public static function getVersionString() {
+        OC_Util::loadVersion();
+        return self::$versionCache['OC_VersionString'];
+    }
+
+    /**
+     * @deprecated the value is of no use anymore
+     * @return string
+     */
+    public static function getEditionString() {
+        return '';
+    }
+
+    /**
+     * @description get the update channel of the current installed of ownCloud.
+     * @return string
+     */
+    public static function getChannel() {
+        OC_Util::loadVersion();
+        return \OC::$server->getConfig()->getSystemValue('updater.release.channel', self::$versionCache['OC_Channel']);
+    }
+
+    /**
+     * @description get the build number of the current installed of ownCloud.
+     * @return string
+     */
+    public static function getBuild() {
+        OC_Util::loadVersion();
+        return self::$versionCache['OC_Build'];
+    }
+
+    /**
+     * @description load the version.php into the session as cache
+     * @suppress PhanUndeclaredVariable
+     */
+    private static function loadVersion() {
+        if (self::$versionCache !== null) {
+            return;
+        }
+
+        $timestamp = filemtime(OC::$SERVERROOT . '/version.php');
+        require OC::$SERVERROOT . '/version.php';
+        /** @var $timestamp int */
+        self::$versionCache['OC_Version_Timestamp'] = $timestamp;
+        /** @var $OC_Version string */
+        self::$versionCache['OC_Version'] = $OC_Version;
+        /** @var $OC_VersionString string */
+        self::$versionCache['OC_VersionString'] = $OC_VersionString;
+        /** @var $OC_Build string */
+        self::$versionCache['OC_Build'] = $OC_Build;
+
+        /** @var $OC_Channel string */
+        self::$versionCache['OC_Channel'] = $OC_Channel;
+    }
+
+    /**
+     * generates a path for JS/CSS files. If no application is provided it will create the path for core.
+     *
+     * @param string $application application to get the files from
+     * @param string $directory directory within this application (css, js, vendor, etc)
+     * @param string $file the file inside of the above folder
+     * @return string the path
+     */
+    private static function generatePath($application, $directory, $file) {
+        if (is_null($file)) {
+            $file = $application;
+            $application = "";
+        }
+        if (!empty($application)) {
+            return "$application/$directory/$file";
+        } else {
+            return "$directory/$file";
+        }
+    }
+
+    /**
+     * add a javascript file
+     *
+     * @param string $application application id
+     * @param string|null $file filename
+     * @param bool $prepend prepend the Script to the beginning of the list
+     * @return void
+     */
+    public static function addScript($application, $file = null, $prepend = false) {
+        $path = OC_Util::generatePath($application, 'js', $file);
+
+        // core js files need separate handling
+        if ($application !== 'core' && $file !== null) {
+            self::addTranslations ( $application );
+        }
+        self::addExternalResource($application, $prepend, $path, "script");
+    }
+
+    /**
+     * add a javascript file from the vendor sub folder
+     *
+     * @param string $application application id
+     * @param string|null $file filename
+     * @param bool $prepend prepend the Script to the beginning of the list
+     * @return void
+     */
+    public static function addVendorScript($application, $file = null, $prepend = false) {
+        $path = OC_Util::generatePath($application, 'vendor', $file);
+        self::addExternalResource($application, $prepend, $path, "script");
+    }
+
+    /**
+     * add a translation JS file
+     *
+     * @param string $application application id
+     * @param string|null $languageCode language code, defaults to the current language
+     * @param bool|null $prepend prepend the Script to the beginning of the list
+     */
+    public static function addTranslations($application, $languageCode = null, $prepend = false) {
+        if (is_null($languageCode)) {
+            $languageCode = \OC::$server->getL10NFactory()->findLanguage($application);
+        }
+        if (!empty($application)) {
+            $path = "$application/l10n/$languageCode";
+        } else {
+            $path = "l10n/$languageCode";
+        }
+        self::addExternalResource($application, $prepend, $path, "script");
+    }
+
+    /**
+     * add a css file
+     *
+     * @param string $application application id
+     * @param string|null $file filename
+     * @param bool $prepend prepend the Style to the beginning of the list
+     * @return void
+     */
+    public static function addStyle($application, $file = null, $prepend = false) {
+        $path = OC_Util::generatePath($application, 'css', $file);
+        self::addExternalResource($application, $prepend, $path, "style");
+    }
+
+    /**
+     * add a css file from the vendor sub folder
+     *
+     * @param string $application application id
+     * @param string|null $file filename
+     * @param bool $prepend prepend the Style to the beginning of the list
+     * @return void
+     */
+    public static function addVendorStyle($application, $file = null, $prepend = false) {
+        $path = OC_Util::generatePath($application, 'vendor', $file);
+        self::addExternalResource($application, $prepend, $path, "style");
+    }
+
+    /**
+     * add an external resource css/js file
+     *
+     * @param string $application application id
+     * @param bool $prepend prepend the file to the beginning of the list
+     * @param string $path
+     * @param string $type (script or style)
+     * @return void
+     */
+    private static function addExternalResource($application, $prepend, $path, $type = "script") {
+
+        if ($type === "style") {
+            if (!in_array($path, self::$styles)) {
+                if ($prepend === true) {
+                    array_unshift ( self::$styles, $path );
+                } else {
+                    self::$styles[] = $path;
+                }
+            }
+        } elseif ($type === "script") {
+            if (!in_array($path, self::$scripts)) {
+                if ($prepend === true) {
+                    array_unshift ( self::$scripts, $path );
+                } else {
+                    self::$scripts [] = $path;
+                }
+            }
+        }
+    }
+
+    /**
+     * Add a custom element to the header
+     * If $text is null then the element will be written as empty element.
+     * So use "" to get a closing tag.
+     * @param string $tag tag name of the element
+     * @param array $attributes array of attributes for the element
+     * @param string $text the text content for the element
+     */
+    public static function addHeader($tag, $attributes, $text=null) {
+        self::$headers[] = array(
+            'tag' => $tag,
+            'attributes' => $attributes,
+            'text' => $text
+        );
+    }
+
+    /**
+     * check if the current server configuration is suitable for ownCloud
+     *
+     * @param \OC\SystemConfig $config
+     * @return array arrays with error messages and hints
+     */
+    public static function checkServer(\OC\SystemConfig $config) {
+        $l = \OC::$server->getL10N('lib');
+        $errors = array();
+        $CONFIG_DATADIRECTORY = $config->getValue('datadirectory', OC::$SERVERROOT . '/data');
+
+        if (!self::needUpgrade($config) && $config->getValue('installed', false)) {
+            // this check needs to be done every time
+            $errors = self::checkDataDirectoryValidity($CONFIG_DATADIRECTORY);
+        }
+
+        // Assume that if checkServer() succeeded before in this session, then all is fine.
+        if (\OC::$server->getSession()->exists('checkServer_succeeded') && \OC::$server->getSession()->get('checkServer_succeeded')) {
+            return $errors;
+        }
+
+        $webServerRestart = false;
+        $setup = new \OC\Setup(
+            $config,
+            \OC::$server->getIniWrapper(),
+            \OC::$server->getL10N('lib'),
+            \OC::$server->query(\OCP\Defaults::class),
+            \OC::$server->getLogger(),
+            \OC::$server->getSecureRandom(),
+            \OC::$server->query(\OC\Installer::class)
+        );
+
+        $urlGenerator = \OC::$server->getURLGenerator();
+
+        $availableDatabases = $setup->getSupportedDatabases();
+        if (empty($availableDatabases)) {
+            $errors[] = array(
+                'error' => $l->t('No database drivers (sqlite, mysql, or postgresql) installed.'),
+                'hint' => '' //TODO: sane hint
+            );
+            $webServerRestart = true;
+        }
+
+        // Check if config folder is writable.
+        if(!OC_Helper::isReadOnlyConfigEnabled()) {
+            if (!is_writable(OC::$configDir) or !is_readable(OC::$configDir)) {
+                $errors[] = array(
+                    'error' => $l->t('Cannot write into "config" directory'),
+                    'hint' => $l->t('This can usually be fixed by giving the webserver write access to the config directory. See %s',
+                        [$urlGenerator->linkToDocs('admin-dir_permissions')])
+                );
+            }
+        }
+
+        // Check if there is a writable install folder.
+        if ($config->getValue('appstoreenabled', true)) {
+            if (OC_App::getInstallPath() === null
+                || !is_writable(OC_App::getInstallPath())
+                || !is_readable(OC_App::getInstallPath())
+            ) {
+                $errors[] = array(
+                    'error' => $l->t('Cannot write into "apps" directory'),
+                    'hint' => $l->t('This can usually be fixed by giving the webserver write access to the apps directory'
+                        . ' or disabling the appstore in the config file. See %s',
+                        [$urlGenerator->linkToDocs('admin-dir_permissions')])
+                );
+            }
+        }
+        // Create root dir.
+        if ($config->getValue('installed', false)) {
+            if (!is_dir($CONFIG_DATADIRECTORY)) {
+                $success = @mkdir($CONFIG_DATADIRECTORY);
+                if ($success) {
+                    $errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
+                } else {
+                    $errors[] = [
+                        'error' => $l->t('Cannot create "data" directory'),
+                        'hint' => $l->t('This can usually be fixed by giving the webserver write access to the root directory. See %s',
+                            [$urlGenerator->linkToDocs('admin-dir_permissions')])
+                    ];
+                }
+            } else if (!is_writable($CONFIG_DATADIRECTORY) or !is_readable($CONFIG_DATADIRECTORY)) {
+                //common hint for all file permissions error messages
+                $permissionsHint = $l->t('Permissions can usually be fixed by giving the webserver write access to the root directory. See %s.',
+                    [$urlGenerator->linkToDocs('admin-dir_permissions')]);
+                $errors[] = [
+                    'error' => 'Your data directory is not writable',
+                    'hint' => $permissionsHint
+                ];
+            } else {
+                $errors = array_merge($errors, self::checkDataDirectoryPermissions($CONFIG_DATADIRECTORY));
+            }
+        }
+
+        if (!OC_Util::isSetLocaleWorking()) {
+            $errors[] = array(
+                'error' => $l->t('Setting locale to %s failed',
+                    array('en_US.UTF-8/fr_FR.UTF-8/es_ES.UTF-8/de_DE.UTF-8/ru_RU.UTF-8/'
+                        . 'pt_BR.UTF-8/it_IT.UTF-8/ja_JP.UTF-8/zh_CN.UTF-8')),
+                'hint' => $l->t('Please install one of these locales on your system and restart your webserver.')
+            );
+        }
+
+        // Contains the dependencies that should be checked against
+        // classes = class_exists
+        // functions = function_exists
+        // defined = defined
+        // ini = ini_get
+        // If the dependency is not found the missing module name is shown to the EndUser
+        // When adding new checks always verify that they pass on Travis as well
+        // for ini settings, see https://github.com/owncloud/administration/blob/master/travis-ci/custom.ini
+        $dependencies = array(
+            'classes' => array(
+                'ZipArchive' => 'zip',
+                'DOMDocument' => 'dom',
+                'XMLWriter' => 'XMLWriter',
+                'XMLReader' => 'XMLReader',
+            ),
+            'functions' => [
+                'xml_parser_create' => 'libxml',
+                'mb_strcut' => 'mb multibyte',
+                'ctype_digit' => 'ctype',
+                'json_encode' => 'JSON',
+                'gd_info' => 'GD',
+                'gzencode' => 'zlib',
+                'iconv' => 'iconv',
+                'simplexml_load_string' => 'SimpleXML',
+                'hash' => 'HASH Message Digest Framework',
+                'curl_init' => 'cURL',
+                'openssl_verify' => 'OpenSSL',
+            ],
+            'defined' => array(
+                'PDO::ATTR_DRIVER_NAME' => 'PDO'
+            ),
+            'ini' => [
+                'default_charset' => 'UTF-8',
+            ],
+        );
+        $missingDependencies = array();
+        $invalidIniSettings = [];
+        $moduleHint = $l->t('Please ask your server administrator to install the module.');
+
+        /**
+         * FIXME: The dependency check does not work properly on HHVM on the moment
+         *        and prevents installation. Once HHVM is more compatible with our
+         *        approach to check for these values we should re-enable those
+         *        checks.
+         */
+        $iniWrapper = \OC::$server->getIniWrapper();
+        if (!self::runningOnHhvm()) {
+            foreach ($dependencies['classes'] as $class => $module) {
+                if (!class_exists($class)) {
+                    $missingDependencies[] = $module;
+                }
+            }
+            foreach ($dependencies['functions'] as $function => $module) {
+                if (!function_exists($function)) {
+                    $missingDependencies[] = $module;
+                }
+            }
+            foreach ($dependencies['defined'] as $defined => $module) {
+                if (!defined($defined)) {
+                    $missingDependencies[] = $module;
+                }
+            }
+            foreach ($dependencies['ini'] as $setting => $expected) {
+                if (is_bool($expected)) {
+                    if ($iniWrapper->getBool($setting) !== $expected) {
+                        $invalidIniSettings[] = [$setting, $expected];
+                    }
+                }
+                if (is_int($expected)) {
+                    if ($iniWrapper->getNumeric($setting) !== $expected) {
+                        $invalidIniSettings[] = [$setting, $expected];
+                    }
+                }
+                if (is_string($expected)) {
+                    if (strtolower($iniWrapper->getString($setting)) !== strtolower($expected)) {
+                        $invalidIniSettings[] = [$setting, $expected];
+                    }
+                }
+            }
+        }
+
+        foreach($missingDependencies as $missingDependency) {
+            $errors[] = array(
+                'error' => $l->t('PHP module %s not installed.', array($missingDependency)),
+                'hint' => $moduleHint
+            );
+            $webServerRestart = true;
+        }
+        foreach($invalidIniSettings as $setting) {
+            if(is_bool($setting[1])) {
+                $setting[1] = $setting[1] ? 'on' : 'off';
+            }
+            $errors[] = [
+                'error' => $l->t('PHP setting "%s" is not set to "%s".', [$setting[0], var_export($setting[1], true)]),
+                'hint' =>  $l->t('Adjusting this setting in php.ini will make Nextcloud run again')
+            ];
+            $webServerRestart = true;
+        }
+
+        /**
+         * The mbstring.func_overload check can only be performed if the mbstring
+         * module is installed as it will return null if the checking setting is
+         * not available and thus a check on the boolean value fails.
+         *
+         * TODO: Should probably be implemented in the above generic dependency
+         *       check somehow in the long-term.
+         */
+        if($iniWrapper->getBool('mbstring.func_overload') !== null &&
+            $iniWrapper->getBool('mbstring.func_overload') === true) {
+            $errors[] = array(
+                'error' => $l->t('mbstring.func_overload is set to "%s" instead of the expected value "0"', [$iniWrapper->getString('mbstring.func_overload')]),
+                'hint' => $l->t('To fix this issue set <code>mbstring.func_overload</code> to <code>0</code> in your php.ini')
+            );
+        }
+
+        if(function_exists('xml_parser_create') &&
+            LIBXML_LOADED_VERSION < 20700 ) {
+            $version = LIBXML_LOADED_VERSION;
+            $major = floor($version/10000);
+            $version -= ($major * 10000);
+            $minor = floor($version/100);
+            $version -= ($minor * 100);
+            $patch = $version;
+            $errors[] = array(
+                'error' => $l->t('libxml2 2.7.0 is at least required. Currently %s is installed.', [$major . '.' . $minor . '.' . $patch]),
+                'hint' => $l->t('To fix this issue update your libxml2 version and restart your web server.')
+            );
+        }
+
+        if (!self::isAnnotationsWorking()) {
+            $errors[] = array(
+                'error' => $l->t('PHP is apparently set up to strip inline doc blocks. This will make several core apps inaccessible.'),
+                'hint' => $l->t('This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.')
+            );
+        }
+
+        if (!\OC::$CLI && $webServerRestart) {
+            $errors[] = array(
+                'error' => $l->t('PHP modules have been installed, but they are still listed as missing?'),
+                'hint' => $l->t('Please ask your server administrator to restart the web server.')
+            );
+        }
+
+        $errors = array_merge($errors, self::checkDatabaseVersion());
+
+        // Cache the result of this function
+        \OC::$server->getSession()->set('checkServer_succeeded', count($errors) == 0);
+
+        return $errors;
+    }
+
+    /**
+     * Check the database version
+     *
+     * @return array errors array
+     */
+    public static function checkDatabaseVersion() {
+        $l = \OC::$server->getL10N('lib');
+        $errors = array();
+        $dbType = \OC::$server->getSystemConfig()->getValue('dbtype', 'sqlite');
+        if ($dbType === 'pgsql') {
+            // check PostgreSQL version
+            try {
+                $result = \OC_DB::executeAudited('SHOW SERVER_VERSION');
+                $data = $result->fetchRow();
+                if (isset($data['server_version'])) {
+                    $version = $data['server_version'];
+                    if (version_compare($version, '9.0.0', '<')) {
+                        $errors[] = array(
+                            'error' => $l->t('PostgreSQL >= 9 required'),
+                            'hint' => $l->t('Please upgrade your database version')
+                        );
+                    }
+                }
+            } catch (\Doctrine\DBAL\DBALException $e) {
+                $logger = \OC::$server->getLogger();
+                $logger->warning('Error occurred while checking PostgreSQL version, assuming >= 9');
+                $logger->logException($e);
+            }
+        }
+        return $errors;
+    }
+
+    /**
+     * Check for correct file permissions of data directory
+     *
+     * @param string $dataDirectory
+     * @return array arrays with error messages and hints
+     */
+    public static function checkDataDirectoryPermissions($dataDirectory) {
+        if(\OC::$server->getConfig()->getSystemValue('check_data_directory_permissions', true) === false) {
+            return  [];
+        }
+        $l = \OC::$server->getL10N('lib');
+        $errors = [];
+        $permissionsModHint = $l->t('Please change the permissions to 0770 so that the directory'
+            . ' cannot be listed by other users.');
+        $perms = substr(decoct(@fileperms($dataDirectory)), -3);
+        if (substr($perms, -1) !== '0') {
+            chmod($dataDirectory, 0770);
+            clearstatcache();
+            $perms = substr(decoct(@fileperms($dataDirectory)), -3);
+            if ($perms[2] !== '0') {
+                $errors[] = [
+                    'error' => $l->t('Your data directory is readable by other users'),
+                    'hint' => $permissionsModHint
+                ];
+            }
+        }
+        return $errors;
+    }
+
+    /**
+     * Check that the data directory exists and is valid by
+     * checking the existence of the ".ocdata" file.
+     *
+     * @param string $dataDirectory data directory path
+     * @return array errors found
+     */
+    public static function checkDataDirectoryValidity($dataDirectory) {
+        $l = \OC::$server->getL10N('lib');
+        $errors = [];
+        if ($dataDirectory[0] !== '/') {
+            $errors[] = [
+                'error' => $l->t('Your data directory must be an absolute path'),
+                'hint' => $l->t('Check the value of "datadirectory" in your configuration')
+            ];
+        }
+        if (!file_exists($dataDirectory . '/.ocdata')) {
+            $errors[] = [
+                'error' => $l->t('Your data directory is invalid'),
+                'hint' => $l->t('Ensure there is a file called ".ocdata"' .
+                    ' in the root of the data directory.')
+            ];
+        }
+        return $errors;
+    }
+
+    /**
+     * Check if the user is logged in, redirects to home if not. With
+     * redirect URL parameter to the request URI.
+     *
+     * @return void
+     */
+    public static function checkLoggedIn() {
+        // Check if we are a user
+        if (!\OC::$server->getUserSession()->isLoggedIn()) {
+            header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute(
+                        'core.login.showLoginForm',
+                        [
+                            'redirect_url' => \OC::$server->getRequest()->getRequestUri(),
+                        ]
+                    )
+            );
+            exit();
+        }
+        // Redirect to 2FA challenge selection if 2FA challenge was not solved yet
+        if (\OC::$server->getTwoFactorAuthManager()->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
+            header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
+            exit();
+        }
+    }
+
+    /**
+     * Check if the user is a admin, redirects to home if not
+     *
+     * @return void
+     */
+    public static function checkAdminUser() {
+        OC_Util::checkLoggedIn();
+        if (!OC_User::isAdminUser(OC_User::getUser())) {
+            header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
+            exit();
+        }
+    }
+
+    /**
+     * Check if the user is a subadmin, redirects to home if not
+     *
+     * @return null|boolean $groups where the current user is subadmin
+     */
+    public static function checkSubAdminUser() {
+        OC_Util::checkLoggedIn();
+        $userObject = \OC::$server->getUserSession()->getUser();
+        $isSubAdmin = false;
+        if($userObject !== null) {
+            $isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
+        }
+
+        if (!$isSubAdmin) {
+            header('Location: ' . \OCP\Util::linkToAbsolute('', 'index.php'));
+            exit();
+        }
+        return true;
+    }
+
+    /**
+     * Returns the URL of the default page
+     * based on the system configuration and
+     * the apps visible for the current user
+     *
+     * @return string URL
+     * @suppress PhanDeprecatedFunction
+     */
+    public static function getDefaultPageUrl() {
+        $urlGenerator = \OC::$server->getURLGenerator();
+        // Deny the redirect if the URL contains a @
+        // This prevents unvalidated redirects like ?redirect_url=:user@domain.com
+        if (isset($_REQUEST['redirect_url']) && strpos($_REQUEST['redirect_url'], '@') === false) {
+            $location = $urlGenerator->getAbsoluteURL(urldecode($_REQUEST['redirect_url']));
+        } else {
+            $defaultPage = \OC::$server->getConfig()->getAppValue('core', 'defaultpage');
+            if ($defaultPage) {
+                $location = $urlGenerator->getAbsoluteURL($defaultPage);
+            } else {
+                $appId = 'files';
+                $config = \OC::$server->getConfig();
+                $defaultApps = explode(',', $config->getSystemValue('defaultapp', 'files'));
+                // find the first app that is enabled for the current user
+                foreach ($defaultApps as $defaultApp) {
+                    $defaultApp = OC_App::cleanAppId(strip_tags($defaultApp));
+                    if (static::getAppManager()->isEnabledForUser($defaultApp)) {
+                        $appId = $defaultApp;
+                        break;
+                    }
+                }
+
+                if($config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true') {
+                    $location = $urlGenerator->getAbsoluteURL('/apps/' . $appId . '/');
+                } else {
+                    $location = $urlGenerator->getAbsoluteURL('/index.php/apps/' . $appId . '/');
+                }
+            }
+        }
+        return $location;
+    }
+
+    /**
+     * Redirect to the user default page
+     *
+     * @return void
+     */
+    public static function redirectToDefaultPage() {
+        $location = self::getDefaultPageUrl();
+        header('Location: ' . $location);
+        exit();
+    }
+
+    /**
+     * get an id unique for this instance
+     *
+     * @return string
+     */
+    public static function getInstanceId() {
+        $id = \OC::$server->getSystemConfig()->getValue('instanceid', null);
+        if (is_null($id)) {
+            // We need to guarantee at least one letter in instanceid so it can be used as the session_name
+            $id = 'oc' . \OC::$server->getSecureRandom()->generate(10, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
+            \OC::$server->getSystemConfig()->setValue('instanceid', $id);
+        }
+        return $id;
+    }
+
+    /**
+     * Public function to sanitize HTML
+     *
+     * This function is used to sanitize HTML and should be applied on any
+     * string or array of strings before displaying it on a web page.
+     *
+     * @param string|array $value
+     * @return string|array an array of sanitized strings or a single sanitized string, depends on the input parameter.
+     */
+    public static function sanitizeHTML($value) {
+        if (is_array($value)) {
+            $value = array_map(function($value) {
+                return self::sanitizeHTML($value);
+            }, $value);
+        } else {
+            // Specify encoding for PHP<5.4
+            $value = htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8');
+        }
+        return $value;
+    }
+
+    /**
+     * Public function to encode url parameters
+     *
+     * This function is used to encode path to file before output.
+     * Encoding is done according to RFC 3986 with one exception:
+     * Character '/' is preserved as is.
+     *
+     * @param string $component part of URI to encode
+     * @return string
+     */
+    public static function encodePath($component) {
+        $encoded = rawurlencode($component);
+        $encoded = str_replace('%2F', '/', $encoded);
+        return $encoded;
+    }
+
+
+    public function createHtaccessTestFile(\OCP\IConfig $config) {
+        // php dev server does not support htaccess
+        if (php_sapi_name() === 'cli-server') {
+            return false;
+        }
+
+        // testdata
+        $fileName = '/htaccesstest.txt';
+        $testContent = 'This is used for testing whether htaccess is properly enabled to disallow access from the outside. This file can be safely removed.';
+
+        // creating a test file
+        $testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
+
+        if (file_exists($testFile)) {// already running this test, possible recursive call
+            return false;
+        }
+
+        $fp = @fopen($testFile, 'w');
+        if (!$fp) {
+            throw new OC\HintException('Can\'t create test file to check for working .htaccess file.',
+                'Make sure it is possible for the webserver to write to ' . $testFile);
+        }
+        fwrite($fp, $testContent);
+        fclose($fp);
+
+        return $testContent;
+    }
+
+    /**
+     * Check if the .htaccess file is working
+     * @param \OCP\IConfig $config
+     * @return bool
+     * @throws Exception
+     * @throws \OC\HintException If the test file can't get written.
+     */
+    public function isHtaccessWorking(\OCP\IConfig $config) {
+
+        if (\OC::$CLI || !$config->getSystemValue('check_for_working_htaccess', true)) {
+            return true;
+        }
+
+        $testContent = $this->createHtaccessTestFile($config);
+        if ($testContent === false) {
+            return false;
+        }
+
+        $fileName = '/htaccesstest.txt';
+        $testFile = $config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data') . '/' . $fileName;
+
+        // accessing the file via http
+        $url = \OC::$server->getURLGenerator()->getAbsoluteURL(OC::$WEBROOT . '/data' . $fileName);
+        try {
+            $content = \OC::$server->getHTTPClientService()->newClient()->get($url)->getBody();
+        } catch (\Exception $e) {
+            $content = false;
+        }
+
+        // cleanup
+        @unlink($testFile);
+
+        /*
 		 * If the content is not equal to test content our .htaccess
 		 * is working as required
 		 */
-		return $content !== $testContent;
-	}
-
-	/**
-	 * Check if the setlocal call does not work. This can happen if the right
-	 * local packages are not available on the server.
-	 *
-	 * @return bool
-	 */
-	public static function isSetLocaleWorking() {
-		\Patchwork\Utf8\Bootup::initLocale();
-		if ('' === basename('§')) {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Check if it's possible to get the inline annotations
-	 *
-	 * @return bool
-	 */
-	public static function isAnnotationsWorking() {
-		$reflection = new \ReflectionMethod(__METHOD__);
-		$docs = $reflection->getDocComment();
-
-		return (is_string($docs) && strlen($docs) > 50);
-	}
-
-	/**
-	 * Check if the PHP module fileinfo is loaded.
-	 *
-	 * @return bool
-	 */
-	public static function fileInfoLoaded() {
-		return function_exists('finfo_open');
-	}
-
-	/**
-	 * clear all levels of output buffering
-	 *
-	 * @return void
-	 */
-	public static function obEnd() {
-		while (ob_get_level()) {
-			ob_end_clean();
-		}
-	}
-
-	/**
-	 * Checks whether the server is running on Mac OS X
-	 *
-	 * @return bool true if running on Mac OS X, false otherwise
-	 */
-	public static function runningOnMac() {
-		return (strtoupper(substr(PHP_OS, 0, 6)) === 'DARWIN');
-	}
-
-	/**
-	 * Checks whether server is running on HHVM
-	 *
-	 * @return bool True if running on HHVM, false otherwise
-	 */
-	public static function runningOnHhvm() {
-		return defined('HHVM_VERSION');
-	}
-
-	/**
-	 * Handles the case that there may not be a theme, then check if a "default"
-	 * theme exists and take that one
-	 *
-	 * @return string the theme
-	 */
-	public static function getTheme() {
-		$theme = \OC::$server->getSystemConfig()->getValue("theme", '');
-
-		if ($theme === '') {
-			if (is_dir(OC::$SERVERROOT . '/themes/default')) {
-				$theme = 'default';
-			}
-		}
-
-		return $theme;
-	}
-
-	/**
-	 * Clear a single file from the opcode cache
-	 * This is useful for writing to the config file
-	 * in case the opcode cache does not re-validate files
-	 * Returns true if successful, false if unsuccessful:
-	 * caller should fall back on clearing the entire cache
-	 * with clearOpcodeCache() if unsuccessful
-	 *
-	 * @param string $path the path of the file to clear from the cache
-	 * @return bool true if underlying function returns true, otherwise false
-	 */
-	public static function deleteFromOpcodeCache($path) {
-		$ret = false;
-		if ($path) {
-			// APC >= 3.1.1
-			if (function_exists('apc_delete_file')) {
-				$ret = @apc_delete_file($path);
-			}
-			// Zend OpCache >= 7.0.0, PHP >= 5.5.0
-			if (function_exists('opcache_invalidate')) {
-				$ret = opcache_invalidate($path);
-			}
-		}
-		return $ret;
-	}
-
-	/**
-	 * Clear the opcode cache if one exists
-	 * This is necessary for writing to the config file
-	 * in case the opcode cache does not re-validate files
-	 *
-	 * @return void
-	 * @suppress PhanDeprecatedFunction
-	 * @suppress PhanUndeclaredConstant
-	 */
-	public static function clearOpcodeCache() {
-		// APC
-		if (function_exists('apc_clear_cache')) {
-			apc_clear_cache();
-		}
-		// Zend Opcache
-		if (function_exists('accelerator_reset')) {
-			accelerator_reset();
-		}
-		// XCache
-		if (function_exists('xcache_clear_cache')) {
-			if (\OC::$server->getIniWrapper()->getBool('xcache.admin.enable_auth')) {
-				\OCP\Util::writeLog('core', 'XCache opcode cache will not be cleared because "xcache.admin.enable_auth" is enabled.', ILogger::WARN);
-			} else {
-				@xcache_clear_cache(XC_TYPE_PHP, 0);
-			}
-		}
-		// Opcache (PHP >= 5.5)
-		if (function_exists('opcache_reset')) {
-			opcache_reset();
-		}
-	}
-
-	/**
-	 * Normalize a unicode string
-	 *
-	 * @param string $value a not normalized string
-	 * @return bool|string
-	 */
-	public static function normalizeUnicode($value) {
-		if(Normalizer::isNormalized($value)) {
-			return $value;
-		}
-
-		$normalizedValue = Normalizer::normalize($value);
-		if ($normalizedValue === null || $normalizedValue === false) {
-			\OC::$server->getLogger()->warning('normalizing failed for "' . $value . '"', ['app' => 'core']);
-			return $value;
-		}
-
-		return $normalizedValue;
-	}
-
-	/**
-	 * A human readable string is generated based on version and build number
-	 *
-	 * @return string
-	 */
-	public static function getHumanVersion() {
-		$version = OC_Util::getVersionString();
-		$build = OC_Util::getBuild();
-		if (!empty($build) and OC_Util::getChannel() === 'daily') {
-			$version .= ' Build:' . $build;
-		}
-		return $version;
-	}
-
-	/**
-	 * Returns whether the given file name is valid
-	 *
-	 * @param string $file file name to check
-	 * @return bool true if the file name is valid, false otherwise
-	 * @deprecated use \OC\Files\View::verifyPath()
-	 */
-	public static function isValidFileName($file) {
-		$trimmed = trim($file);
-		if ($trimmed === '') {
-			return false;
-		}
-		if (\OC\Files\Filesystem::isIgnoredDir($trimmed)) {
-			return false;
-		}
-
-		// detect part files
-		if (preg_match('/' . \OCP\Files\FileInfo::BLACKLIST_FILES_REGEX . '/', $trimmed) !== 0) {
-			return false;
-		}
-
-		foreach (str_split($trimmed) as $char) {
-			if (strpos(\OCP\Constants::FILENAME_INVALID_CHARS, $char) !== false) {
-				return false;
-			}
-		}
-		return true;
-	}
-
-	/**
-	 * Check whether the instance needs to perform an upgrade,
-	 * either when the core version is higher or any app requires
-	 * an upgrade.
-	 *
-	 * @param \OC\SystemConfig $config
-	 * @return bool whether the core or any app needs an upgrade
-	 * @throws \OC\HintException When the upgrade from the given version is not allowed
-	 */
-	public static function needUpgrade(\OC\SystemConfig $config) {
-		if ($config->getValue('installed', false)) {
-			$installedVersion = $config->getValue('version', '0.0.0');
-			$currentVersion = implode('.', \OCP\Util::getVersion());
-			$versionDiff = version_compare($currentVersion, $installedVersion);
-			if ($versionDiff > 0) {
-				return true;
-			} else if ($config->getValue('debug', false) && $versionDiff < 0) {
-				// downgrade with debug
-				$installedMajor = explode('.', $installedVersion);
-				$installedMajor = $installedMajor[0] . '.' . $installedMajor[1];
-				$currentMajor = explode('.', $currentVersion);
-				$currentMajor = $currentMajor[0] . '.' . $currentMajor[1];
-				if ($installedMajor === $currentMajor) {
-					// Same major, allow downgrade for developers
-					return true;
-				} else {
-					// downgrade attempt, throw exception
-					throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
-				}
-			} else if ($versionDiff < 0) {
-				// downgrade attempt, throw exception
-				throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
-			}
-
-			// also check for upgrades for apps (independently from the user)
-			$apps = \OC_App::getEnabledApps(false, true);
-			$shouldUpgrade = false;
-			foreach ($apps as $app) {
-				if (\OC_App::shouldUpgrade($app)) {
-					$shouldUpgrade = true;
-					break;
-				}
-			}
-			return $shouldUpgrade;
-		} else {
-			return false;
-		}
-	}
+        return $content !== $testContent;
+    }
+
+    /**
+     * Check if the setlocal call does not work. This can happen if the right
+     * local packages are not available on the server.
+     *
+     * @return bool
+     */
+    public static function isSetLocaleWorking() {
+        \Patchwork\Utf8\Bootup::initLocale();
+        if ('' === basename('§')) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Check if it's possible to get the inline annotations
+     *
+     * @return bool
+     */
+    public static function isAnnotationsWorking() {
+        $reflection = new \ReflectionMethod(__METHOD__);
+        $docs = $reflection->getDocComment();
+
+        return (is_string($docs) && strlen($docs) > 50);
+    }
+
+    /**
+     * Check if the PHP module fileinfo is loaded.
+     *
+     * @return bool
+     */
+    public static function fileInfoLoaded() {
+        return function_exists('finfo_open');
+    }
+
+    /**
+     * clear all levels of output buffering
+     *
+     * @return void
+     */
+    public static function obEnd() {
+        while (ob_get_level()) {
+            ob_end_clean();
+        }
+    }
+
+    /**
+     * Checks whether the server is running on Mac OS X
+     *
+     * @return bool true if running on Mac OS X, false otherwise
+     */
+    public static function runningOnMac() {
+        return (strtoupper(substr(PHP_OS, 0, 6)) === 'DARWIN');
+    }
+
+    /**
+     * Checks whether server is running on HHVM
+     *
+     * @return bool True if running on HHVM, false otherwise
+     */
+    public static function runningOnHhvm() {
+        return defined('HHVM_VERSION');
+    }
+
+    /**
+     * Handles the case that there may not be a theme, then check if a "default"
+     * theme exists and take that one
+     *
+     * @return string the theme
+     */
+    public static function getTheme() {
+        $theme = \OC::$server->getSystemConfig()->getValue("theme", '');
+
+        if ($theme === '') {
+            if (is_dir(OC::$SERVERROOT . '/themes/default')) {
+                $theme = 'default';
+            }
+        }
+
+        return $theme;
+    }
+
+    /**
+     * Clear a single file from the opcode cache
+     * This is useful for writing to the config file
+     * in case the opcode cache does not re-validate files
+     * Returns true if successful, false if unsuccessful:
+     * caller should fall back on clearing the entire cache
+     * with clearOpcodeCache() if unsuccessful
+     *
+     * @param string $path the path of the file to clear from the cache
+     * @return bool true if underlying function returns true, otherwise false
+     */
+    public static function deleteFromOpcodeCache($path) {
+        $ret = false;
+        if ($path) {
+            // APC >= 3.1.1
+            if (function_exists('apc_delete_file')) {
+                $ret = @apc_delete_file($path);
+            }
+            // Zend OpCache >= 7.0.0, PHP >= 5.5.0
+            if (function_exists('opcache_invalidate')) {
+                $ret = opcache_invalidate($path);
+            }
+        }
+        return $ret;
+    }
+
+    /**
+     * Clear the opcode cache if one exists
+     * This is necessary for writing to the config file
+     * in case the opcode cache does not re-validate files
+     *
+     * @return void
+     * @suppress PhanDeprecatedFunction
+     * @suppress PhanUndeclaredConstant
+     */
+    public static function clearOpcodeCache() {
+        // APC
+        if (function_exists('apc_clear_cache')) {
+            apc_clear_cache();
+        }
+        // Zend Opcache
+        if (function_exists('accelerator_reset')) {
+            accelerator_reset();
+        }
+        // XCache
+        if (function_exists('xcache_clear_cache')) {
+            if (\OC::$server->getIniWrapper()->getBool('xcache.admin.enable_auth')) {
+                \OCP\Util::writeLog('core', 'XCache opcode cache will not be cleared because "xcache.admin.enable_auth" is enabled.', ILogger::WARN);
+            } else {
+                @xcache_clear_cache(XC_TYPE_PHP, 0);
+            }
+        }
+        // Opcache (PHP >= 5.5)
+        if (function_exists('opcache_reset')) {
+            opcache_reset();
+        }
+    }
+
+    /**
+     * Normalize a unicode string
+     *
+     * @param string $value a not normalized string
+     * @return bool|string
+     */
+    public static function normalizeUnicode($value) {
+        if(Normalizer::isNormalized($value)) {
+            return $value;
+        }
+
+        $normalizedValue = Normalizer::normalize($value);
+        if ($normalizedValue === null || $normalizedValue === false) {
+            \OC::$server->getLogger()->warning('normalizing failed for "' . $value . '"', ['app' => 'core']);
+            return $value;
+        }
+
+        return $normalizedValue;
+    }
+
+    /**
+     * A human readable string is generated based on version and build number
+     *
+     * @return string
+     */
+    public static function getHumanVersion() {
+        $version = OC_Util::getVersionString();
+        $build = OC_Util::getBuild();
+        if (!empty($build) and OC_Util::getChannel() === 'daily') {
+            $version .= ' Build:' . $build;
+        }
+        return $version;
+    }
+
+    /**
+     * Returns whether the given file name is valid
+     *
+     * @param string $file file name to check
+     * @return bool true if the file name is valid, false otherwise
+     * @deprecated use \OC\Files\View::verifyPath()
+     */
+    public static function isValidFileName($file) {
+        $trimmed = trim($file);
+        if ($trimmed === '') {
+            return false;
+        }
+        if (\OC\Files\Filesystem::isIgnoredDir($trimmed)) {
+            return false;
+        }
+
+        // detect part files
+        if (preg_match('/' . \OCP\Files\FileInfo::BLACKLIST_FILES_REGEX . '/', $trimmed) !== 0) {
+            return false;
+        }
+
+        foreach (str_split($trimmed) as $char) {
+            if (strpos(\OCP\Constants::FILENAME_INVALID_CHARS, $char) !== false) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Check whether the instance needs to perform an upgrade,
+     * either when the core version is higher or any app requires
+     * an upgrade.
+     *
+     * @param \OC\SystemConfig $config
+     * @return bool whether the core or any app needs an upgrade
+     * @throws \OC\HintException When the upgrade from the given version is not allowed
+     */
+    public static function needUpgrade(\OC\SystemConfig $config) {
+        if ($config->getValue('installed', false)) {
+            $installedVersion = $config->getValue('version', '0.0.0');
+            $currentVersion = implode('.', \OCP\Util::getVersion());
+            $versionDiff = version_compare($currentVersion, $installedVersion);
+            if ($versionDiff > 0) {
+                return true;
+            } else if ($config->getValue('debug', false) && $versionDiff < 0) {
+                // downgrade with debug
+                $installedMajor = explode('.', $installedVersion);
+                $installedMajor = $installedMajor[0] . '.' . $installedMajor[1];
+                $currentMajor = explode('.', $currentVersion);
+                $currentMajor = $currentMajor[0] . '.' . $currentMajor[1];
+                if ($installedMajor === $currentMajor) {
+                    // Same major, allow downgrade for developers
+                    return true;
+                } else {
+                    // downgrade attempt, throw exception
+                    throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
+                }
+            } else if ($versionDiff < 0) {
+                // downgrade attempt, throw exception
+                throw new \OC\HintException('Downgrading is not supported and is likely to cause unpredictable issues (from ' . $installedVersion . ' to ' . $currentVersion . ')');
+            }
+
+            // also check for upgrades for apps (independently from the user)
+            $apps = \OC_App::getEnabledApps(false, true);
+            $shouldUpgrade = false;
+            foreach ($apps as $app) {
+                if (\OC_App::shouldUpgrade($app)) {
+                    $shouldUpgrade = true;
+                    break;
+                }
+            }
+            return $shouldUpgrade;
+        } else {
+            return false;
+        }
+    }
 
 }

apps/files_external/templates/settings.php

Indentation +57 added lines, -57 removed lines

@@ -1,48 +1,48 @@ 
 <?php
-	use \OCA\Files_External\Lib\Backend\Backend;
-	use \OCA\Files_External\Lib\Auth\AuthMechanism;
-	use \OCA\Files_External\Lib\DefinitionParameter;
-	use \OCA\Files_External\Service\BackendService;
+    use \OCA\Files_External\Lib\Backend\Backend;
+    use \OCA\Files_External\Lib\Auth\AuthMechanism;
+    use \OCA\Files_External\Lib\DefinitionParameter;
+    use \OCA\Files_External\Service\BackendService;
 
-	$canCreateMounts = $_['visibilityType'] === BackendService::VISIBILITY_ADMIN || $_['allowUserMounting'];
+    $canCreateMounts = $_['visibilityType'] === BackendService::VISIBILITY_ADMIN || $_['allowUserMounting'];
 
-	$l->t("Enable encryption");
-	$l->t("Enable previews");
-	$l->t("Enable sharing");
-	$l->t("Check for changes");
-	$l->t("Never");
-	$l->t("Once every direct access");
-	$l->t('Read only');
+    $l->t("Enable encryption");
+    $l->t("Enable previews");
+    $l->t("Enable sharing");
+    $l->t("Check for changes");
+    $l->t("Never");
+    $l->t("Once every direct access");
+    $l->t('Read only');
 
-	script('files_external', 'settings');
-	style('files_external', 'settings');
+    script('files_external', 'settings');
+    style('files_external', 'settings');
 
-	// load custom JS
-	foreach ($_['backends'] as $backend) {
-		/** @var Backend $backend */
-		$scripts = $backend->getCustomJs();
-		foreach ($scripts as $script) {
-			script('files_external', $script);
-		}
-	}
-	foreach ($_['authMechanisms'] as $authMechanism) {
-		/** @var AuthMechanism $authMechanism */
-		$scripts = $authMechanism->getCustomJs();
-		foreach ($scripts as $script) {
-			script('files_external', $script);
-		}
-	}
+    // load custom JS
+    foreach ($_['backends'] as $backend) {
+        /** @var Backend $backend */
+        $scripts = $backend->getCustomJs();
+        foreach ($scripts as $script) {
+            script('files_external', $script);
+        }
+    }
+    foreach ($_['authMechanisms'] as $authMechanism) {
+        /** @var AuthMechanism $authMechanism */
+        $scripts = $authMechanism->getCustomJs();
+        foreach ($scripts as $script) {
+            script('files_external', $script);
+        }
+    }
 
-	function writeParameterInput($parameter, $options, $classes = []) {
-		$value = '';
-		if (isset($options[$parameter->getName()])) {
-			$value = $options[$parameter->getName()];
-		}
-		$placeholder = $parameter->getText();
-		$is_optional = $parameter->isFlagSet(DefinitionParameter::FLAG_OPTIONAL);
+    function writeParameterInput($parameter, $options, $classes = []) {
+        $value = '';
+        if (isset($options[$parameter->getName()])) {
+            $value = $options[$parameter->getName()];
+        }
+        $placeholder = $parameter->getText();
+        $is_optional = $parameter->isFlagSet(DefinitionParameter::FLAG_OPTIONAL);
 
-		switch ($parameter->getType()) {
-		case DefinitionParameter::VALUE_PASSWORD: ?>
+        switch ($parameter->getType()) {
+        case DefinitionParameter::VALUE_PASSWORD: ?>
 			<?php if ($is_optional) { $classes[] = 'optional'; } ?>
 			<input type="password"
 				<?php if (!empty($classes)): ?> class="<?php p(implode(' ', $classes)); ?>"<?php endif; ?>
@@ -51,8 +51,8 @@ 
 				placeholder="<?php p($placeholder); ?>"
 			/>
 			<?php
-			break;
-		case DefinitionParameter::VALUE_BOOLEAN: ?>
+            break;
+        case DefinitionParameter::VALUE_BOOLEAN: ?>
 			<?php $checkboxId = uniqid("checkbox_"); ?>
 			<div>
 			<label>
@@ -66,16 +66,16 @@ 
 			</label>
 			</div>
 			<?php
-			break;
-		case DefinitionParameter::VALUE_HIDDEN: ?>
+            break;
+        case DefinitionParameter::VALUE_HIDDEN: ?>
 			<input type="hidden"
 				<?php if (!empty($classes)): ?> class="<?php p(implode(' ', $classes)); ?>"<?php endif; ?>
 				data-parameter="<?php p($parameter->getName()); ?>"
 				value="<?php p($value); ?>"
 			/>
 			<?php
-			break;
-		default: ?>
+            break;
+        default: ?>
 			<?php if ($is_optional) { $classes[] = 'optional'; } ?>
 			<input type="text"
 				<?php if (!empty($classes)): ?> class="<?php p(implode(' ', $classes)); ?>"<?php endif; ?>
@@ -84,8 +84,8 @@ 
 				placeholder="<?php p($placeholder); ?>"
 			/>
 			<?php
-		}
-	}
+        }
+    }
 ?>
 
 <div id="emptycontent" class="hidden">
@@ -128,13 +128,13 @@ 
 							<?php p($l->t('Add storage')); ?>
 						</option>
 						<?php
-							$sortedBackends = array_filter($_['backends'], function($backend) use ($_) {
-								return $backend->isVisibleFor($_['visibilityType']);
-							});
-							uasort($sortedBackends, function($a, $b) {
-								return strcasecmp($a->getText(), $b->getText());
-							});
-						?>
+                            $sortedBackends = array_filter($_['backends'], function($backend) use ($_) {
+                                return $backend->isVisibleFor($_['visibilityType']);
+                            });
+                            uasort($sortedBackends, function($a, $b) {
+                                return strcasecmp($a->getText(), $b->getText());
+                            });
+                        ?>
 						<?php foreach ($sortedBackends as $backend): ?>
 							<?php if ($backend->getDeprecateTo()) continue; // ignore deprecated backends ?>
 							<option value="<?php p($backend->getIdentifier()); ?>"><?php p($backend->getText()); ?></option>
@@ -181,10 +181,10 @@ 
 		<p id="userMountingBackends"<?php if (!$_['allowUserMounting']): ?> class="hidden"<?php endif; ?>>
 			<?php p($l->t('Allow users to mount the following external storage')); ?><br />
 			<?php
-				$userBackends = array_filter($_['backends'], function($backend) {
-					return $backend->isAllowedVisibleFor(BackendService::VISIBILITY_PERSONAL);
-				});
-			?>
+                $userBackends = array_filter($_['backends'], function($backend) {
+                    return $backend->isAllowedVisibleFor(BackendService::VISIBILITY_PERSONAL);
+                });
+            ?>
 			<?php $i = 0; foreach ($userBackends as $backend): ?>
 				<?php if ($deprecateTo = $backend->getDeprecateTo()): ?>
 					<input type="hidden" id="allowUserMountingBackends<?php p($i); ?>" name="allowUserMountingBackends[]" value="<?php p($backend->getIdentifier()); ?>" data-deprecate-to="<?php p($deprecateTo->getIdentifier()); ?>" />

apps/files_external/lib/Command/ListCommand.php

Indentation +211 added lines, -211 removed lines

@@ -38,240 +38,240 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class ListCommand extends Base {
-	/**
-	 * @var GlobalStoragesService
-	 */
-	protected $globalService;
+    /**
+     * @var GlobalStoragesService
+     */
+    protected $globalService;
 
-	/**
-	 * @var UserStoragesService
-	 */
-	protected $userService;
+    /**
+     * @var UserStoragesService
+     */
+    protected $userService;
 
-	/**
-	 * @var IUserSession
-	 */
-	protected $userSession;
+    /**
+     * @var IUserSession
+     */
+    protected $userSession;
 
-	/**
-	 * @var IUserManager
-	 */
-	protected $userManager;
+    /**
+     * @var IUserManager
+     */
+    protected $userManager;
 
-	const ALL = -1;
+    const ALL = -1;
 
-	function __construct(GlobalStoragesService $globalService, UserStoragesService $userService, IUserSession $userSession, IUserManager $userManager) {
-		parent::__construct();
-		$this->globalService = $globalService;
-		$this->userService = $userService;
-		$this->userSession = $userSession;
-		$this->userManager = $userManager;
-	}
+    function __construct(GlobalStoragesService $globalService, UserStoragesService $userService, IUserSession $userSession, IUserManager $userManager) {
+        parent::__construct();
+        $this->globalService = $globalService;
+        $this->userService = $userService;
+        $this->userSession = $userSession;
+        $this->userManager = $userManager;
+    }
 
-	protected function configure() {
-		$this
-			->setName('files_external:list')
-			->setDescription('List configured admin or personal mounts')
-			->addArgument(
-				'user_id',
-				InputArgument::OPTIONAL,
-				'user id to list the personal mounts for, if no user is provided admin mounts will be listed'
-			)->addOption(
-				'show-password',
-				'',
-				InputOption::VALUE_NONE,
-				'show passwords and secrets'
-			)->addOption(
-				'full',
-				null,
-				InputOption::VALUE_NONE,
-				'don\'t truncate long values in table output'
-			)->addOption(
-				'all',
-				'a',
-				InputOption::VALUE_NONE,
-				'show both system wide mounts and all personal mounts'
-			);
-		parent::configure();
-	}
+    protected function configure() {
+        $this
+            ->setName('files_external:list')
+            ->setDescription('List configured admin or personal mounts')
+            ->addArgument(
+                'user_id',
+                InputArgument::OPTIONAL,
+                'user id to list the personal mounts for, if no user is provided admin mounts will be listed'
+            )->addOption(
+                'show-password',
+                '',
+                InputOption::VALUE_NONE,
+                'show passwords and secrets'
+            )->addOption(
+                'full',
+                null,
+                InputOption::VALUE_NONE,
+                'don\'t truncate long values in table output'
+            )->addOption(
+                'all',
+                'a',
+                InputOption::VALUE_NONE,
+                'show both system wide mounts and all personal mounts'
+            );
+        parent::configure();
+    }
 
-	protected function execute(InputInterface $input, OutputInterface $output) {
-		if ($input->getOption('all')) {
-			/** @var  $mounts StorageConfig[] */
-			$mounts = $this->globalService->getStorageForAllUsers();
-			$userId = self::ALL;
-		} else {
-			$userId = $input->getArgument('user_id');
-			$storageService = $this->getStorageService($userId);
+    protected function execute(InputInterface $input, OutputInterface $output) {
+        if ($input->getOption('all')) {
+            /** @var  $mounts StorageConfig[] */
+            $mounts = $this->globalService->getStorageForAllUsers();
+            $userId = self::ALL;
+        } else {
+            $userId = $input->getArgument('user_id');
+            $storageService = $this->getStorageService($userId);
 
-			/** @var  $mounts StorageConfig[] */
-			$mounts = $storageService->getAllStorages();
-		}
+            /** @var  $mounts StorageConfig[] */
+            $mounts = $storageService->getAllStorages();
+        }
 
-		$this->listMounts($userId, $mounts, $input, $output);
-	}
+        $this->listMounts($userId, $mounts, $input, $output);
+    }
 
-	/**
-	 * @param $userId $userId
-	 * @param StorageConfig[] $mounts
-	 * @param InputInterface $input
-	 * @param OutputInterface $output
-	 */
-	public function listMounts($userId, array $mounts, InputInterface $input, OutputInterface $output) {
-		$outputType = $input->getOption('output');
-		if (count($mounts) === 0) {
-			if ($outputType === self::OUTPUT_FORMAT_JSON || $outputType === self::OUTPUT_FORMAT_JSON_PRETTY) {
-				$output->writeln('[]');
-			} else {
-				if ($userId === self::ALL) {
-					$output->writeln("<info>No mounts configured</info>");
-				} else if ($userId) {
-					$output->writeln("<info>No mounts configured by $userId</info>");
-				} else {
-					$output->writeln("<info>No admin mounts configured</info>");
-				}
-			}
-			return;
-		}
+    /**
+     * @param $userId $userId
+     * @param StorageConfig[] $mounts
+     * @param InputInterface $input
+     * @param OutputInterface $output
+     */
+    public function listMounts($userId, array $mounts, InputInterface $input, OutputInterface $output) {
+        $outputType = $input->getOption('output');
+        if (count($mounts) === 0) {
+            if ($outputType === self::OUTPUT_FORMAT_JSON || $outputType === self::OUTPUT_FORMAT_JSON_PRETTY) {
+                $output->writeln('[]');
+            } else {
+                if ($userId === self::ALL) {
+                    $output->writeln("<info>No mounts configured</info>");
+                } else if ($userId) {
+                    $output->writeln("<info>No mounts configured by $userId</info>");
+                } else {
+                    $output->writeln("<info>No admin mounts configured</info>");
+                }
+            }
+            return;
+        }
 
-		$headers = ['Mount ID', 'Mount Point', 'Storage', 'Authentication Type', 'Configuration', 'Options'];
+        $headers = ['Mount ID', 'Mount Point', 'Storage', 'Authentication Type', 'Configuration', 'Options'];
 
-		if (!$userId || $userId === self::ALL) {
-			$headers[] = 'Applicable Users';
-			$headers[] = 'Applicable Groups';
-		}
-		if ($userId === self::ALL) {
-			$headers[] = 'Type';
-		}
+        if (!$userId || $userId === self::ALL) {
+            $headers[] = 'Applicable Users';
+            $headers[] = 'Applicable Groups';
+        }
+        if ($userId === self::ALL) {
+            $headers[] = 'Type';
+        }
 
-		if (!$input->getOption('show-password')) {
-			$hideKeys = ['password', 'refresh_token', 'token', 'client_secret', 'public_key', 'private_key'];
-			foreach ($mounts as $mount) {
-				$config = $mount->getBackendOptions();
-				foreach ($config as $key => $value) {
-					if (in_array($key, $hideKeys)) {
-						$mount->setBackendOption($key, '***');
-					}
-				}
-			}
-		}
+        if (!$input->getOption('show-password')) {
+            $hideKeys = ['password', 'refresh_token', 'token', 'client_secret', 'public_key', 'private_key'];
+            foreach ($mounts as $mount) {
+                $config = $mount->getBackendOptions();
+                foreach ($config as $key => $value) {
+                    if (in_array($key, $hideKeys)) {
+                        $mount->setBackendOption($key, '***');
+                    }
+                }
+            }
+        }
 
-		if ($outputType === self::OUTPUT_FORMAT_JSON || $outputType === self::OUTPUT_FORMAT_JSON_PRETTY) {
-			$keys = array_map(function ($header) {
-				return strtolower(str_replace(' ', '_', $header));
-			}, $headers);
+        if ($outputType === self::OUTPUT_FORMAT_JSON || $outputType === self::OUTPUT_FORMAT_JSON_PRETTY) {
+            $keys = array_map(function ($header) {
+                return strtolower(str_replace(' ', '_', $header));
+            }, $headers);
 
-			$pairs = array_map(function (StorageConfig $config) use ($keys, $userId) {
-				$values = [
-					$config->getId(),
-					$config->getMountPoint(),
-					$config->getBackend()->getStorageClass(),
-					$config->getAuthMechanism()->getIdentifier(),
-					$config->getBackendOptions(),
-					$config->getMountOptions()
-				];
-				if (!$userId || $userId === self::ALL) {
-					$values[] = $config->getApplicableUsers();
-					$values[] = $config->getApplicableGroups();
-				}
-				if ($userId === self::ALL) {
-					$values[] = $config->getType() === StorageConfig::MOUNT_TYPE_ADMIN ? 'admin' : 'personal';
-				}
+            $pairs = array_map(function (StorageConfig $config) use ($keys, $userId) {
+                $values = [
+                    $config->getId(),
+                    $config->getMountPoint(),
+                    $config->getBackend()->getStorageClass(),
+                    $config->getAuthMechanism()->getIdentifier(),
+                    $config->getBackendOptions(),
+                    $config->getMountOptions()
+                ];
+                if (!$userId || $userId === self::ALL) {
+                    $values[] = $config->getApplicableUsers();
+                    $values[] = $config->getApplicableGroups();
+                }
+                if ($userId === self::ALL) {
+                    $values[] = $config->getType() === StorageConfig::MOUNT_TYPE_ADMIN ? 'admin' : 'personal';
+                }
 
-				return array_combine($keys, $values);
-			}, $mounts);
-			if ($outputType === self::OUTPUT_FORMAT_JSON) {
-				$output->writeln(json_encode(array_values($pairs)));
-			} else {
-				$output->writeln(json_encode(array_values($pairs), JSON_PRETTY_PRINT));
-			}
-		} else {
-			$full = $input->getOption('full');
-			$defaultMountOptions = [
-				'encrypt' => true,
-				'previews' => true,
-				'filesystem_check_changes' => 1,
-				'enable_sharing' => false,
-				'encoding_compatibility' => false,
-				'readonly' => false,
-			];
-			$rows = array_map(function (StorageConfig $config) use ($userId, $defaultMountOptions, $full) {
-				$storageConfig = $config->getBackendOptions();
-				$keys = array_keys($storageConfig);
-				$values = array_values($storageConfig);
+                return array_combine($keys, $values);
+            }, $mounts);
+            if ($outputType === self::OUTPUT_FORMAT_JSON) {
+                $output->writeln(json_encode(array_values($pairs)));
+            } else {
+                $output->writeln(json_encode(array_values($pairs), JSON_PRETTY_PRINT));
+            }
+        } else {
+            $full = $input->getOption('full');
+            $defaultMountOptions = [
+                'encrypt' => true,
+                'previews' => true,
+                'filesystem_check_changes' => 1,
+                'enable_sharing' => false,
+                'encoding_compatibility' => false,
+                'readonly' => false,
+            ];
+            $rows = array_map(function (StorageConfig $config) use ($userId, $defaultMountOptions, $full) {
+                $storageConfig = $config->getBackendOptions();
+                $keys = array_keys($storageConfig);
+                $values = array_values($storageConfig);
 
-				if (!$full) {
-					$values = array_map(function ($value) {
-						if (is_string($value) && strlen($value) > 32) {
-							return substr($value, 0, 6) . '...' . substr($value, -6, 6);
-						} else {
-							return $value;
-						}
-					}, $values);
-				}
+                if (!$full) {
+                    $values = array_map(function ($value) {
+                        if (is_string($value) && strlen($value) > 32) {
+                            return substr($value, 0, 6) . '...' . substr($value, -6, 6);
+                        } else {
+                            return $value;
+                        }
+                    }, $values);
+                }
 
-				$configStrings = array_map(function ($key, $value) {
-					return $key . ': ' . json_encode($value);
-				}, $keys, $values);
-				$configString = implode(', ', $configStrings);
+                $configStrings = array_map(function ($key, $value) {
+                    return $key . ': ' . json_encode($value);
+                }, $keys, $values);
+                $configString = implode(', ', $configStrings);
 
-				$mountOptions = $config->getMountOptions();
-				// hide defaults
-				foreach ($mountOptions as $key => $value) {
-					if ($value === $defaultMountOptions[$key]) {
-						unset($mountOptions[$key]);
-					}
-				}
-				$keys = array_keys($mountOptions);
-				$values = array_values($mountOptions);
+                $mountOptions = $config->getMountOptions();
+                // hide defaults
+                foreach ($mountOptions as $key => $value) {
+                    if ($value === $defaultMountOptions[$key]) {
+                        unset($mountOptions[$key]);
+                    }
+                }
+                $keys = array_keys($mountOptions);
+                $values = array_values($mountOptions);
 
-				$optionsStrings = array_map(function ($key, $value) {
-					return $key . ': ' . json_encode($value);
-				}, $keys, $values);
-				$optionsString = implode(', ', $optionsStrings);
+                $optionsStrings = array_map(function ($key, $value) {
+                    return $key . ': ' . json_encode($value);
+                }, $keys, $values);
+                $optionsString = implode(', ', $optionsStrings);
 
-				$values = [
-					$config->getId(),
-					$config->getMountPoint(),
-					$config->getBackend()->getText(),
-					$config->getAuthMechanism()->getText(),
-					$configString,
-					$optionsString
-				];
+                $values = [
+                    $config->getId(),
+                    $config->getMountPoint(),
+                    $config->getBackend()->getText(),
+                    $config->getAuthMechanism()->getText(),
+                    $configString,
+                    $optionsString
+                ];
 
-				if (!$userId || $userId === self::ALL) {
-					$applicableUsers = implode(', ', $config->getApplicableUsers());
-					$applicableGroups = implode(', ', $config->getApplicableGroups());
-					if ($applicableUsers === '' && $applicableGroups === '') {
-						$applicableUsers = 'All';
-					}
-					$values[] = $applicableUsers;
-					$values[] = $applicableGroups;
-				}
-				if ($userId === self::ALL) {
-					$values[] = $config->getType() === StorageConfig::MOUNT_TYPE_ADMIN ? 'Admin' : 'Personal';
-				}
+                if (!$userId || $userId === self::ALL) {
+                    $applicableUsers = implode(', ', $config->getApplicableUsers());
+                    $applicableGroups = implode(', ', $config->getApplicableGroups());
+                    if ($applicableUsers === '' && $applicableGroups === '') {
+                        $applicableUsers = 'All';
+                    }
+                    $values[] = $applicableUsers;
+                    $values[] = $applicableGroups;
+                }
+                if ($userId === self::ALL) {
+                    $values[] = $config->getType() === StorageConfig::MOUNT_TYPE_ADMIN ? 'Admin' : 'Personal';
+                }
 
-				return $values;
-			}, $mounts);
+                return $values;
+            }, $mounts);
 
-			$table = new Table($output);
-			$table->setHeaders($headers);
-			$table->setRows($rows);
-			$table->render();
-		}
-	}
+            $table = new Table($output);
+            $table->setHeaders($headers);
+            $table->setRows($rows);
+            $table->render();
+        }
+    }
 
-	protected function getStorageService($userId) {
-		if (!empty($userId)) {
-			$user = $this->userManager->get($userId);
-			if (is_null($user)) {
-				throw new NoUserException("user $userId not found");
-			}
-			$this->userSession->setUser($user);
-			return $this->userService;
-		} else {
-			return $this->globalService;
-		}
-	}
+    protected function getStorageService($userId) {
+        if (!empty($userId)) {
+            $user = $this->userManager->get($userId);
+            if (is_null($user)) {
+                throw new NoUserException("user $userId not found");
+            }
+            $this->userSession->setUser($user);
+            return $this->userService;
+        } else {
+            return $this->globalService;
+        }
+    }
 }

Spacing +9 added lines, -9 removed lines

@@ -157,11 +157,11 @@ 
 		}
 
 		if ($outputType === self::OUTPUT_FORMAT_JSON || $outputType === self::OUTPUT_FORMAT_JSON_PRETTY) {
-			$keys = array_map(function ($header) {
+			$keys = array_map(function($header) {
 				return strtolower(str_replace(' ', '_', $header));
 			}, $headers);
 
-			$pairs = array_map(function (StorageConfig $config) use ($keys, $userId) {
+			$pairs = array_map(function(StorageConfig $config) use ($keys, $userId) {
 				$values = [
 					$config->getId(),
 					$config->getMountPoint(),
@@ -195,23 +195,23 @@ 
 				'encoding_compatibility' => false,
 				'readonly' => false,
 			];
-			$rows = array_map(function (StorageConfig $config) use ($userId, $defaultMountOptions, $full) {
+			$rows = array_map(function(StorageConfig $config) use ($userId, $defaultMountOptions, $full) {
 				$storageConfig = $config->getBackendOptions();
 				$keys = array_keys($storageConfig);
 				$values = array_values($storageConfig);
 
 				if (!$full) {
-					$values = array_map(function ($value) {
+					$values = array_map(function($value) {
 						if (is_string($value) && strlen($value) > 32) {
-							return substr($value, 0, 6) . '...' . substr($value, -6, 6);
+							return substr($value, 0, 6).'...'.substr($value, -6, 6);
 						} else {
 							return $value;
 						}
 					}, $values);
 				}
 
-				$configStrings = array_map(function ($key, $value) {
-					return $key . ': ' . json_encode($value);
+				$configStrings = array_map(function($key, $value) {
+					return $key.': '.json_encode($value);
 				}, $keys, $values);
 				$configString = implode(', ', $configStrings);
 
@@ -225,8 +225,8 @@ 
 				$keys = array_keys($mountOptions);
 				$values = array_values($mountOptions);
 
-				$optionsStrings = array_map(function ($key, $value) {
-					return $key . ': ' . json_encode($value);
+				$optionsStrings = array_map(function($key, $value) {
+					return $key.': '.json_encode($value);
 				}, $keys, $values);
 				$optionsString = implode(', ', $optionsStrings);
 

apps/dav/lib/Connector/Sabre/Node.php

Indentation +322 added lines, -322 removed lines

@@ -44,332 +44,332 @@
 
 abstract class Node implements \Sabre\DAV\INode {
 
-	/**
-	 * @var \OC\Files\View
-	 */
-	protected $fileView;
-
-	/**
-	 * The path to the current node
-	 *
-	 * @var string
-	 */
-	protected $path;
-
-	/**
-	 * node properties cache
-	 *
-	 * @var array
-	 */
-	protected $property_cache = null;
-
-	/**
-	 * @var \OCP\Files\FileInfo
-	 */
-	protected $info;
-
-	/**
-	 * @var IManager
-	 */
-	protected $shareManager;
-
-	/**
-	 * Sets up the node, expects a full path name
-	 *
-	 * @param \OC\Files\View $view
-	 * @param \OCP\Files\FileInfo $info
-	 * @param IManager $shareManager
-	 */
-	public function __construct(View $view, FileInfo $info, IManager $shareManager = null) {
-		$this->fileView = $view;
-		$this->path = $this->fileView->getRelativePath($info->getPath());
-		$this->info = $info;
-		if ($shareManager) {
-			$this->shareManager = $shareManager;
-		} else {
-			$this->shareManager = \OC::$server->getShareManager();
-		}
-	}
-
-	protected function refreshInfo() {
-		$this->info = $this->fileView->getFileInfo($this->path);
-	}
-
-	/**
-	 *  Returns the name of the node
-	 *
-	 * @return string
-	 */
-	public function getName() {
-		return $this->info->getName();
-	}
-
-	/**
-	 * Returns the full path
-	 *
-	 * @return string
-	 */
-	public function getPath() {
-		return $this->path;
-	}
-
-	/**
-	 * Renames the node
-	 *
-	 * @param string $name The new name
-	 * @throws \Sabre\DAV\Exception\BadRequest
-	 * @throws \Sabre\DAV\Exception\Forbidden
-	 */
-	public function setName($name) {
-
-		// rename is only allowed if the update privilege is granted
-		if (!$this->info->isUpdateable()) {
-			throw new \Sabre\DAV\Exception\Forbidden();
-		}
-
-		list($parentPath,) = \Sabre\Uri\split($this->path);
-		list(, $newName) = \Sabre\Uri\split($name);
-
-		// verify path of the target
-		$this->verifyPath();
-
-		$newPath = $parentPath . '/' . $newName;
-
-		$this->fileView->rename($this->path, $newPath);
-
-		$this->path = $newPath;
-
-		$this->refreshInfo();
-	}
-
-	public function setPropertyCache($property_cache) {
-		$this->property_cache = $property_cache;
-	}
-
-	/**
-	 * Returns the last modification time, as a unix timestamp
-	 *
-	 * @return int timestamp as integer
-	 */
-	public function getLastModified() {
-		$timestamp = $this->info->getMtime();
-		if (!empty($timestamp)) {
-			return (int)$timestamp;
-		}
-		return $timestamp;
-	}
-
-	/**
-	 *  sets the last modification time of the file (mtime) to the value given
-	 *  in the second parameter or to now if the second param is empty.
-	 *  Even if the modification time is set to a custom value the access time is set to now.
-	 */
-	public function touch($mtime) {
-		$mtime = $this->sanitizeMtime($mtime);
-		$this->fileView->touch($this->path, $mtime);
-		$this->refreshInfo();
-	}
-
-	/**
-	 * Returns the ETag for a file
-	 *
-	 * An ETag is a unique identifier representing the current version of the
-	 * file. If the file changes, the ETag MUST change.  The ETag is an
-	 * arbitrary string, but MUST be surrounded by double-quotes.
-	 *
-	 * Return null if the ETag can not effectively be determined
-	 *
-	 * @return string
-	 */
-	public function getETag() {
-		return '"' . $this->info->getEtag() . '"';
-	}
-
-	/**
-	 * Sets the ETag
-	 *
-	 * @param string $etag
-	 *
-	 * @return int file id of updated file or -1 on failure
-	 */
-	public function setETag($etag) {
-		return $this->fileView->putFileInfo($this->path, array('etag' => $etag));
-	}
-
-	/**
-	 * Returns the size of the node, in bytes
-	 *
-	 * @return integer
-	 */
-	public function getSize() {
-		return $this->info->getSize();
-	}
-
-	/**
-	 * Returns the cache's file id
-	 *
-	 * @return int
-	 */
-	public function getId() {
-		return $this->info->getId();
-	}
-
-	/**
-	 * @return string|null
-	 */
-	public function getFileId() {
-		if ($this->info->getId()) {
-			$instanceId = \OC_Util::getInstanceId();
-			$id = sprintf('%08d', $this->info->getId());
-			return $id . $instanceId;
-		}
-
-		return null;
-	}
-
-	/**
-	 * @return integer
-	 */
-	public function getInternalFileId() {
-		return $this->info->getId();
-	}
-
-	/**
-	 * @param string $user
-	 * @return int
-	 */
-	public function getSharePermissions($user) {
-
-		// check of we access a federated share
-		if ($user !== null) {
-			try {
-				$share = $this->shareManager->getShareByToken($user);
-				return $share->getPermissions();
-			} catch (ShareNotFound $e) {
-				// ignore
-			}
-		}
-
-		$storage = $this->info->getStorage();
-
-		$path = $this->info->getInternalPath();
-
-		if ($storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
-			$permissions = (int)$storage->getShare()->getPermissions();
-		} else {
-			$permissions = $storage->getPermissions($path);
-		}
-
-		/*
+    /**
+     * @var \OC\Files\View
+     */
+    protected $fileView;
+
+    /**
+     * The path to the current node
+     *
+     * @var string
+     */
+    protected $path;
+
+    /**
+     * node properties cache
+     *
+     * @var array
+     */
+    protected $property_cache = null;
+
+    /**
+     * @var \OCP\Files\FileInfo
+     */
+    protected $info;
+
+    /**
+     * @var IManager
+     */
+    protected $shareManager;
+
+    /**
+     * Sets up the node, expects a full path name
+     *
+     * @param \OC\Files\View $view
+     * @param \OCP\Files\FileInfo $info
+     * @param IManager $shareManager
+     */
+    public function __construct(View $view, FileInfo $info, IManager $shareManager = null) {
+        $this->fileView = $view;
+        $this->path = $this->fileView->getRelativePath($info->getPath());
+        $this->info = $info;
+        if ($shareManager) {
+            $this->shareManager = $shareManager;
+        } else {
+            $this->shareManager = \OC::$server->getShareManager();
+        }
+    }
+
+    protected function refreshInfo() {
+        $this->info = $this->fileView->getFileInfo($this->path);
+    }
+
+    /**
+     *  Returns the name of the node
+     *
+     * @return string
+     */
+    public function getName() {
+        return $this->info->getName();
+    }
+
+    /**
+     * Returns the full path
+     *
+     * @return string
+     */
+    public function getPath() {
+        return $this->path;
+    }
+
+    /**
+     * Renames the node
+     *
+     * @param string $name The new name
+     * @throws \Sabre\DAV\Exception\BadRequest
+     * @throws \Sabre\DAV\Exception\Forbidden
+     */
+    public function setName($name) {
+
+        // rename is only allowed if the update privilege is granted
+        if (!$this->info->isUpdateable()) {
+            throw new \Sabre\DAV\Exception\Forbidden();
+        }
+
+        list($parentPath,) = \Sabre\Uri\split($this->path);
+        list(, $newName) = \Sabre\Uri\split($name);
+
+        // verify path of the target
+        $this->verifyPath();
+
+        $newPath = $parentPath . '/' . $newName;
+
+        $this->fileView->rename($this->path, $newPath);
+
+        $this->path = $newPath;
+
+        $this->refreshInfo();
+    }
+
+    public function setPropertyCache($property_cache) {
+        $this->property_cache = $property_cache;
+    }
+
+    /**
+     * Returns the last modification time, as a unix timestamp
+     *
+     * @return int timestamp as integer
+     */
+    public function getLastModified() {
+        $timestamp = $this->info->getMtime();
+        if (!empty($timestamp)) {
+            return (int)$timestamp;
+        }
+        return $timestamp;
+    }
+
+    /**
+     *  sets the last modification time of the file (mtime) to the value given
+     *  in the second parameter or to now if the second param is empty.
+     *  Even if the modification time is set to a custom value the access time is set to now.
+     */
+    public function touch($mtime) {
+        $mtime = $this->sanitizeMtime($mtime);
+        $this->fileView->touch($this->path, $mtime);
+        $this->refreshInfo();
+    }
+
+    /**
+     * Returns the ETag for a file
+     *
+     * An ETag is a unique identifier representing the current version of the
+     * file. If the file changes, the ETag MUST change.  The ETag is an
+     * arbitrary string, but MUST be surrounded by double-quotes.
+     *
+     * Return null if the ETag can not effectively be determined
+     *
+     * @return string
+     */
+    public function getETag() {
+        return '"' . $this->info->getEtag() . '"';
+    }
+
+    /**
+     * Sets the ETag
+     *
+     * @param string $etag
+     *
+     * @return int file id of updated file or -1 on failure
+     */
+    public function setETag($etag) {
+        return $this->fileView->putFileInfo($this->path, array('etag' => $etag));
+    }
+
+    /**
+     * Returns the size of the node, in bytes
+     *
+     * @return integer
+     */
+    public function getSize() {
+        return $this->info->getSize();
+    }
+
+    /**
+     * Returns the cache's file id
+     *
+     * @return int
+     */
+    public function getId() {
+        return $this->info->getId();
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getFileId() {
+        if ($this->info->getId()) {
+            $instanceId = \OC_Util::getInstanceId();
+            $id = sprintf('%08d', $this->info->getId());
+            return $id . $instanceId;
+        }
+
+        return null;
+    }
+
+    /**
+     * @return integer
+     */
+    public function getInternalFileId() {
+        return $this->info->getId();
+    }
+
+    /**
+     * @param string $user
+     * @return int
+     */
+    public function getSharePermissions($user) {
+
+        // check of we access a federated share
+        if ($user !== null) {
+            try {
+                $share = $this->shareManager->getShareByToken($user);
+                return $share->getPermissions();
+            } catch (ShareNotFound $e) {
+                // ignore
+            }
+        }
+
+        $storage = $this->info->getStorage();
+
+        $path = $this->info->getInternalPath();
+
+        if ($storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
+            /** @var \OCA\Files_Sharing\SharedStorage $storage */
+            $permissions = (int)$storage->getShare()->getPermissions();
+        } else {
+            $permissions = $storage->getPermissions($path);
+        }
+
+        /*
 		 * We can always share non moveable mount points with DELETE and UPDATE
 		 * Eventually we need to do this properly
 		 */
-		$mountpoint = $this->info->getMountPoint();
-		if (!($mountpoint instanceof MoveableMount)) {
-			$mountpointpath = $mountpoint->getMountPoint();
-			if (substr($mountpointpath, -1) === '/') {
-				$mountpointpath = substr($mountpointpath, 0, -1);
-			}
-
-			if (!$mountpoint->getOption('readonly', false) && $mountpointpath === $this->info->getPath()) {
-				$permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
-			}
-		}
-
-		/*
+        $mountpoint = $this->info->getMountPoint();
+        if (!($mountpoint instanceof MoveableMount)) {
+            $mountpointpath = $mountpoint->getMountPoint();
+            if (substr($mountpointpath, -1) === '/') {
+                $mountpointpath = substr($mountpointpath, 0, -1);
+            }
+
+            if (!$mountpoint->getOption('readonly', false) && $mountpointpath === $this->info->getPath()) {
+                $permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
+            }
+        }
+
+        /*
 		 * Files can't have create or delete permissions
 		 */
-		if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
-			$permissions &= ~(\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_DELETE);
-		}
-
-		return $permissions;
-	}
-
-	/**
-	 * @return string
-	 */
-	public function getDavPermissions() {
-		$p = '';
-		if ($this->info->isShared()) {
-			$p .= 'S';
-		}
-		if ($this->info->isShareable()) {
-			$p .= 'R';
-		}
-		if ($this->info->isMounted()) {
-			$p .= 'M';
-		}
-		if ($this->info->isReadable()) {
-			$p .= 'G';
-		}
-		if ($this->info->isDeletable()) {
-			$p .= 'D';
-		}
-		if ($this->info->isUpdateable()) {
-			$p .= 'NV'; // Renameable, Moveable
-		}
-		if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
-			if ($this->info->isUpdateable()) {
-				$p .= 'W';
-			}
-		} else {
-			if ($this->info->isCreatable()) {
-				$p .= 'CK';
-			}
-		}
-		return $p;
-	}
-
-	public function getOwner() {
-		return $this->info->getOwner();
-	}
-
-	protected function verifyPath() {
-		try {
-			$fileName = basename($this->info->getPath());
-			$this->fileView->verifyPath($this->path, $fileName);
-		} catch (\OCP\Files\InvalidPathException $ex) {
-			throw new InvalidPath($ex->getMessage());
-		}
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function acquireLock($type) {
-		$this->fileView->lockFile($this->path, $type);
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function releaseLock($type) {
-		$this->fileView->unlockFile($this->path, $type);
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function changeLock($type) {
-		$this->fileView->changeLock($this->path, $type);
-	}
-
-	public function getFileInfo() {
-		return $this->info;
-	}
-
-	protected function sanitizeMtime($mtimeFromRequest) {
-		// In PHP 5.X "is_numeric" returns true for strings in hexadecimal
-		// notation. This is no longer the case in PHP 7.X, so this check
-		// ensures that strings with hexadecimal notations fail too in PHP 5.X.
-		$isHexadecimal = is_string($mtimeFromRequest) && preg_match('/^\s*0[xX]/', $mtimeFromRequest);
-		if ($isHexadecimal || !is_numeric($mtimeFromRequest)) {
-			throw new \InvalidArgumentException('X-OC-MTime header must be an integer (unix timestamp).');
-		}
-
-		return (int)$mtimeFromRequest;
-	}
+        if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
+            $permissions &= ~(\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_DELETE);
+        }
+
+        return $permissions;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDavPermissions() {
+        $p = '';
+        if ($this->info->isShared()) {
+            $p .= 'S';
+        }
+        if ($this->info->isShareable()) {
+            $p .= 'R';
+        }
+        if ($this->info->isMounted()) {
+            $p .= 'M';
+        }
+        if ($this->info->isReadable()) {
+            $p .= 'G';
+        }
+        if ($this->info->isDeletable()) {
+            $p .= 'D';
+        }
+        if ($this->info->isUpdateable()) {
+            $p .= 'NV'; // Renameable, Moveable
+        }
+        if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
+            if ($this->info->isUpdateable()) {
+                $p .= 'W';
+            }
+        } else {
+            if ($this->info->isCreatable()) {
+                $p .= 'CK';
+            }
+        }
+        return $p;
+    }
+
+    public function getOwner() {
+        return $this->info->getOwner();
+    }
+
+    protected function verifyPath() {
+        try {
+            $fileName = basename($this->info->getPath());
+            $this->fileView->verifyPath($this->path, $fileName);
+        } catch (\OCP\Files\InvalidPathException $ex) {
+            throw new InvalidPath($ex->getMessage());
+        }
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function acquireLock($type) {
+        $this->fileView->lockFile($this->path, $type);
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function releaseLock($type) {
+        $this->fileView->unlockFile($this->path, $type);
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function changeLock($type) {
+        $this->fileView->changeLock($this->path, $type);
+    }
+
+    public function getFileInfo() {
+        return $this->info;
+    }
+
+    protected function sanitizeMtime($mtimeFromRequest) {
+        // In PHP 5.X "is_numeric" returns true for strings in hexadecimal
+        // notation. This is no longer the case in PHP 7.X, so this check
+        // ensures that strings with hexadecimal notations fail too in PHP 5.X.
+        $isHexadecimal = is_string($mtimeFromRequest) && preg_match('/^\s*0[xX]/', $mtimeFromRequest);
+        if ($isHexadecimal || !is_numeric($mtimeFromRequest)) {
+            throw new \InvalidArgumentException('X-OC-MTime header must be an integer (unix timestamp).');
+        }
+
+        return (int)$mtimeFromRequest;
+    }
 
 }