nextcloud / server

lib/private/TemplateLayout.php

Indentation +200 added lines, -200 removed lines

@@ -40,229 +40,229 @@
 
 class TemplateLayout extends \OC_Template {
 
-	private static $versionHash = '';
+    private static $versionHash = '';
 
-	/**
-	 * @var \OCP\IConfig
-	 */
-	private $config;
+    /**
+     * @var \OCP\IConfig
+     */
+    private $config;
 
-	/**
-	 * @param string $renderAs
-	 * @param string $appId application id
-	 */
-	public function __construct( $renderAs, $appId = '' ) {
+    /**
+     * @param string $renderAs
+     * @param string $appId application id
+     */
+    public function __construct( $renderAs, $appId = '' ) {
 
-		// yes - should be injected ....
-		$this->config = \OC::$server->getConfig();
+        // yes - should be injected ....
+        $this->config = \OC::$server->getConfig();
 
-		// Decide which page we show
-		if($renderAs == 'user') {
-			parent::__construct( 'core', 'layout.user' );
-			if(in_array(\OC_App::getCurrentApp(), ['settings','admin', 'help']) !== false) {
-				$this->assign('bodyid', 'body-settings');
-			}else{
-				$this->assign('bodyid', 'body-user');
-			}
+        // Decide which page we show
+        if($renderAs == 'user') {
+            parent::__construct( 'core', 'layout.user' );
+            if(in_array(\OC_App::getCurrentApp(), ['settings','admin', 'help']) !== false) {
+                $this->assign('bodyid', 'body-settings');
+            }else{
+                $this->assign('bodyid', 'body-user');
+            }
 
-			// Code integrity notification
-			$integrityChecker = \OC::$server->getIntegrityCodeChecker();
-			if(\OC_User::isAdminUser(\OC_User::getUser()) && $integrityChecker->isCodeCheckEnforced() && !$integrityChecker->hasPassedCheck()) {
-				\OCP\Util::addScript('core', 'integritycheck-failed-notification');
-			}
+            // Code integrity notification
+            $integrityChecker = \OC::$server->getIntegrityCodeChecker();
+            if(\OC_User::isAdminUser(\OC_User::getUser()) && $integrityChecker->isCodeCheckEnforced() && !$integrityChecker->hasPassedCheck()) {
+                \OCP\Util::addScript('core', 'integritycheck-failed-notification');
+            }
 
-			// Add navigation entry
-			$this->assign( 'application', '');
-			$this->assign( 'appid', $appId );
-			$navigation = \OC_App::getNavigation();
-			$this->assign( 'navigation', $navigation);
-			$navigation = \OC_App::getHeaderNavigation();
-			$this->assign( 'headernavigation', $navigation);
-			$settingsNavigation = \OC_App::getSettingsNavigation();
-			$this->assign( 'settingsnavigation', $settingsNavigation);
-			foreach($navigation as $entry) {
-				if ($entry['active']) {
-					$this->assign( 'application', $entry['name'] );
-					break;
-				}
-			}
+            // Add navigation entry
+            $this->assign( 'application', '');
+            $this->assign( 'appid', $appId );
+            $navigation = \OC_App::getNavigation();
+            $this->assign( 'navigation', $navigation);
+            $navigation = \OC_App::getHeaderNavigation();
+            $this->assign( 'headernavigation', $navigation);
+            $settingsNavigation = \OC_App::getSettingsNavigation();
+            $this->assign( 'settingsnavigation', $settingsNavigation);
+            foreach($navigation as $entry) {
+                if ($entry['active']) {
+                    $this->assign( 'application', $entry['name'] );
+                    break;
+                }
+            }
 			
-			foreach($settingsNavigation as $entry) {
-				if ($entry['active']) {
-					$this->assign( 'application', $entry['name'] );
-					break;
-				}
-			}
-			$userDisplayName = \OC_User::getDisplayName();
-			$appsMgmtActive = strpos(\OC::$server->getRequest()->getRequestUri(), \OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')) === 0;
-			if ($appsMgmtActive) {
-				$l = \OC::$server->getL10N('lib');
-				$this->assign('application', $l->t('Apps'));
-			}
-			$this->assign('user_displayname', $userDisplayName);
-			$this->assign('user_uid', \OC_User::getUser());
-			$this->assign('appsmanagement_active', $appsMgmtActive);
+            foreach($settingsNavigation as $entry) {
+                if ($entry['active']) {
+                    $this->assign( 'application', $entry['name'] );
+                    break;
+                }
+            }
+            $userDisplayName = \OC_User::getDisplayName();
+            $appsMgmtActive = strpos(\OC::$server->getRequest()->getRequestUri(), \OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')) === 0;
+            if ($appsMgmtActive) {
+                $l = \OC::$server->getL10N('lib');
+                $this->assign('application', $l->t('Apps'));
+            }
+            $this->assign('user_displayname', $userDisplayName);
+            $this->assign('user_uid', \OC_User::getUser());
+            $this->assign('appsmanagement_active', $appsMgmtActive);
 
-			if (\OC_User::getUser() === false) {
-				$this->assign('userAvatarSet', false);
-			} else {
-				$this->assign('userAvatarSet', \OC::$server->getAvatarManager()->getAvatar(\OC_User::getUser())->exists());
-				$this->assign('userAvatarVersion', \OC::$server->getConfig()->getUserValue(\OC_User::getUser(), 'avatar', 'version', 0));
-			}
+            if (\OC_User::getUser() === false) {
+                $this->assign('userAvatarSet', false);
+            } else {
+                $this->assign('userAvatarSet', \OC::$server->getAvatarManager()->getAvatar(\OC_User::getUser())->exists());
+                $this->assign('userAvatarVersion', \OC::$server->getConfig()->getUserValue(\OC_User::getUser(), 'avatar', 'version', 0));
+            }
 
-		} else if ($renderAs == 'error') {
-			parent::__construct('core', 'layout.guest', '', false);
-			$this->assign('bodyid', 'body-login');
-		} else if ($renderAs == 'guest') {
-			parent::__construct('core', 'layout.guest');
-			$this->assign('bodyid', 'body-login');
-		} else {
-			parent::__construct('core', 'layout.base');
+        } else if ($renderAs == 'error') {
+            parent::__construct('core', 'layout.guest', '', false);
+            $this->assign('bodyid', 'body-login');
+        } else if ($renderAs == 'guest') {
+            parent::__construct('core', 'layout.guest');
+            $this->assign('bodyid', 'body-login');
+        } else {
+            parent::__construct('core', 'layout.base');
 
-		}
-		// Send the language to our layouts
-		$this->assign('language', \OC::$server->getL10NFactory()->findLanguage());
+        }
+        // Send the language to our layouts
+        $this->assign('language', \OC::$server->getL10NFactory()->findLanguage());
 
-		if(\OC::$server->getSystemConfig()->getValue('installed', false)) {
-			if (empty(self::$versionHash)) {
-				$v = \OC_App::getAppVersions();
-				$v['core'] = implode('.', \OCP\Util::getVersion());
-				self::$versionHash = md5(implode(',', $v));
-			}
-		} else {
-			self::$versionHash = md5('not installed');
-		}
+        if(\OC::$server->getSystemConfig()->getValue('installed', false)) {
+            if (empty(self::$versionHash)) {
+                $v = \OC_App::getAppVersions();
+                $v['core'] = implode('.', \OCP\Util::getVersion());
+                self::$versionHash = md5(implode(',', $v));
+            }
+        } else {
+            self::$versionHash = md5('not installed');
+        }
 
-		// Add the js files
-		$jsFiles = self::findJavascriptFiles(\OC_Util::$scripts);
-		$this->assign('jsfiles', array());
-		if ($this->config->getSystemValue('installed', false) && $renderAs != 'error') {
-			if (\OC::$server->getContentSecurityPolicyNonceManager()->browserSupportsCspV3()) {
-				$jsConfigHelper = new JSConfigHelper(
-					\OC::$server->getL10N('core'),
-					\OC::$server->getThemingDefaults(),
-					\OC::$server->getAppManager(),
-					\OC::$server->getSession(),
-					\OC::$server->getUserSession()->getUser(),
-					\OC::$server->getConfig(),
-					\OC::$server->getGroupManager(),
-					\OC::$server->getIniWrapper(),
-					\OC::$server->getURLGenerator()
-				);
-				$this->assign('inline_ocjs', $jsConfigHelper->getConfig());
-				$this->assign('foo', 'bar');
-			} else {
-				$this->append('jsfiles', \OC::$server->getURLGenerator()->linkToRoute('core.OCJS.getConfig', ['v' => self::$versionHash]));
-			}
-		}
-		foreach($jsFiles as $info) {
-			$web = $info[1];
-			$file = $info[2];
-			$this->append( 'jsfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
-		}
+        // Add the js files
+        $jsFiles = self::findJavascriptFiles(\OC_Util::$scripts);
+        $this->assign('jsfiles', array());
+        if ($this->config->getSystemValue('installed', false) && $renderAs != 'error') {
+            if (\OC::$server->getContentSecurityPolicyNonceManager()->browserSupportsCspV3()) {
+                $jsConfigHelper = new JSConfigHelper(
+                    \OC::$server->getL10N('core'),
+                    \OC::$server->getThemingDefaults(),
+                    \OC::$server->getAppManager(),
+                    \OC::$server->getSession(),
+                    \OC::$server->getUserSession()->getUser(),
+                    \OC::$server->getConfig(),
+                    \OC::$server->getGroupManager(),
+                    \OC::$server->getIniWrapper(),
+                    \OC::$server->getURLGenerator()
+                );
+                $this->assign('inline_ocjs', $jsConfigHelper->getConfig());
+                $this->assign('foo', 'bar');
+            } else {
+                $this->append('jsfiles', \OC::$server->getURLGenerator()->linkToRoute('core.OCJS.getConfig', ['v' => self::$versionHash]));
+            }
+        }
+        foreach($jsFiles as $info) {
+            $web = $info[1];
+            $file = $info[2];
+            $this->append( 'jsfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
+        }
 
-		try {
-			$pathInfo = \OC::$server->getRequest()->getPathInfo();
-		} catch (\Exception $e) {
-			$pathInfo = '';
-		}
+        try {
+            $pathInfo = \OC::$server->getRequest()->getPathInfo();
+        } catch (\Exception $e) {
+            $pathInfo = '';
+        }
 
-		// Do not initialise scss appdata until we have a fully installed instance
-		// Do not load scss for update, errors, installation or login page
-		if(\OC::$server->getSystemConfig()->getValue('installed', false)
-			&& !\OCP\Util::needUpgrade()
-			&& $pathInfo !== ''
-			&& !preg_match('/^\/login/', $pathInfo)) {
-			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
-		} else {
-			// If we ignore the scss compiler,
-			// we need to load the guest css fallback
-			\OC_Util::addStyle('guest');
-			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles, false);
-		}
+        // Do not initialise scss appdata until we have a fully installed instance
+        // Do not load scss for update, errors, installation or login page
+        if(\OC::$server->getSystemConfig()->getValue('installed', false)
+            && !\OCP\Util::needUpgrade()
+            && $pathInfo !== ''
+            && !preg_match('/^\/login/', $pathInfo)) {
+            $cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
+        } else {
+            // If we ignore the scss compiler,
+            // we need to load the guest css fallback
+            \OC_Util::addStyle('guest');
+            $cssFiles = self::findStylesheetFiles(\OC_Util::$styles, false);
+        }
 
-		$this->assign('cssfiles', array());
-		$this->assign('printcssfiles', []);
-		$this->assign('versionHash', self::$versionHash);
-		foreach($cssFiles as $info) {
-			$web = $info[1];
-			$file = $info[2];
+        $this->assign('cssfiles', array());
+        $this->assign('printcssfiles', []);
+        $this->assign('versionHash', self::$versionHash);
+        foreach($cssFiles as $info) {
+            $web = $info[1];
+            $file = $info[2];
 
-			if (substr($file, -strlen('print.css')) === 'print.css') {
-				$this->append( 'printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
-			} else {
-				$this->append( 'cssfiles', $web.'/'.$file . $this->getVersionHashSuffix()  );
-			}
-		}
-	}
+            if (substr($file, -strlen('print.css')) === 'print.css') {
+                $this->append( 'printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
+            } else {
+                $this->append( 'cssfiles', $web.'/'.$file . $this->getVersionHashSuffix()  );
+            }
+        }
+    }
 
-	protected function getVersionHashSuffix() {
-		if(\OC::$server->getConfig()->getSystemValue('debug', false)) {
-			// allows chrome workspace mapping in debug mode
-			return "";
-		}
+    protected function getVersionHashSuffix() {
+        if(\OC::$server->getConfig()->getSystemValue('debug', false)) {
+            // allows chrome workspace mapping in debug mode
+            return "";
+        }
 
-		return '?v=' . self::$versionHash;
-	}
+        return '?v=' . self::$versionHash;
+    }
 
-	/**
-	 * @param array $styles
-	 * @return array
-	 */
-	static public function findStylesheetFiles($styles, $compileScss = true) {
-		// Read the selected theme from the config file
-		$theme = \OC_Util::getTheme();
+    /**
+     * @param array $styles
+     * @return array
+     */
+    static public function findStylesheetFiles($styles, $compileScss = true) {
+        // Read the selected theme from the config file
+        $theme = \OC_Util::getTheme();
 
-		if($compileScss) {
-			$SCSSCacher = new SCSSCacher(
-				\OC::$server->getLogger(),
-				\OC::$server->getAppDataDir('css'),
-				\OC::$server->getURLGenerator(),
-				\OC::$server->getSystemConfig()
-			);
-		} else {
-			$SCSSCacher = null;
-		}
+        if($compileScss) {
+            $SCSSCacher = new SCSSCacher(
+                \OC::$server->getLogger(),
+                \OC::$server->getAppDataDir('css'),
+                \OC::$server->getURLGenerator(),
+                \OC::$server->getSystemConfig()
+            );
+        } else {
+            $SCSSCacher = null;
+        }
 
-		$locator = new \OC\Template\CSSResourceLocator(
-			\OC::$server->getLogger(),
-			$theme,
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
-			$SCSSCacher);
-		$locator->find($styles);
-		return $locator->getResources();
-	}
+        $locator = new \OC\Template\CSSResourceLocator(
+            \OC::$server->getLogger(),
+            $theme,
+            array( \OC::$SERVERROOT => \OC::$WEBROOT ),
+            array( \OC::$SERVERROOT => \OC::$WEBROOT ),
+            $SCSSCacher);
+        $locator->find($styles);
+        return $locator->getResources();
+    }
 
-	/**
-	 * @param array $scripts
-	 * @return array
-	 */
-	static public function findJavascriptFiles($scripts) {
-		// Read the selected theme from the config file
-		$theme = \OC_Util::getTheme();
+    /**
+     * @param array $scripts
+     * @return array
+     */
+    static public function findJavascriptFiles($scripts) {
+        // Read the selected theme from the config file
+        $theme = \OC_Util::getTheme();
 
-		$locator = new \OC\Template\JSResourceLocator(
-			\OC::$server->getLogger(),
-			$theme,
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ));
-		$locator->find($scripts);
-		return $locator->getResources();
-	}
+        $locator = new \OC\Template\JSResourceLocator(
+            \OC::$server->getLogger(),
+            $theme,
+            array( \OC::$SERVERROOT => \OC::$WEBROOT ),
+            array( \OC::$SERVERROOT => \OC::$WEBROOT ));
+        $locator->find($scripts);
+        return $locator->getResources();
+    }
 
-	/**
-	 * Converts the absolute file path to a relative path from \OC::$SERVERROOT
-	 * @param string $filePath Absolute path
-	 * @return string Relative path
-	 * @throws \Exception If $filePath is not under \OC::$SERVERROOT
-	 */
-	public static function convertToRelativePath($filePath) {
-		$relativePath = explode(\OC::$SERVERROOT, $filePath);
-		if(count($relativePath) !== 2) {
-			throw new \Exception('$filePath is not under the \OC::$SERVERROOT');
-		}
+    /**
+     * Converts the absolute file path to a relative path from \OC::$SERVERROOT
+     * @param string $filePath Absolute path
+     * @return string Relative path
+     * @throws \Exception If $filePath is not under \OC::$SERVERROOT
+     */
+    public static function convertToRelativePath($filePath) {
+        $relativePath = explode(\OC::$SERVERROOT, $filePath);
+        if(count($relativePath) !== 2) {
+            throw new \Exception('$filePath is not under the \OC::$SERVERROOT');
+        }
 
-		return $relativePath[1];
-	}
+        return $relativePath[1];
+    }
 }

Spacing +30 added lines, -30 removed lines

@@ -51,45 +51,45 @@ 
 	 * @param string $renderAs
 	 * @param string $appId application id
 	 */
-	public function __construct( $renderAs, $appId = '' ) {
+	public function __construct($renderAs, $appId = '') {
 
 		// yes - should be injected ....
 		$this->config = \OC::$server->getConfig();
 
 		// Decide which page we show
-		if($renderAs == 'user') {
-			parent::__construct( 'core', 'layout.user' );
-			if(in_array(\OC_App::getCurrentApp(), ['settings','admin', 'help']) !== false) {
+		if ($renderAs == 'user') {
+			parent::__construct('core', 'layout.user');
+			if (in_array(\OC_App::getCurrentApp(), ['settings', 'admin', 'help']) !== false) {
 				$this->assign('bodyid', 'body-settings');
-			}else{
+			} else {
 				$this->assign('bodyid', 'body-user');
 			}
 
 			// Code integrity notification
 			$integrityChecker = \OC::$server->getIntegrityCodeChecker();
-			if(\OC_User::isAdminUser(\OC_User::getUser()) && $integrityChecker->isCodeCheckEnforced() && !$integrityChecker->hasPassedCheck()) {
+			if (\OC_User::isAdminUser(\OC_User::getUser()) && $integrityChecker->isCodeCheckEnforced() && !$integrityChecker->hasPassedCheck()) {
 				\OCP\Util::addScript('core', 'integritycheck-failed-notification');
 			}
 
 			// Add navigation entry
-			$this->assign( 'application', '');
-			$this->assign( 'appid', $appId );
+			$this->assign('application', '');
+			$this->assign('appid', $appId);
 			$navigation = \OC_App::getNavigation();
-			$this->assign( 'navigation', $navigation);
+			$this->assign('navigation', $navigation);
 			$navigation = \OC_App::getHeaderNavigation();
-			$this->assign( 'headernavigation', $navigation);
+			$this->assign('headernavigation', $navigation);
 			$settingsNavigation = \OC_App::getSettingsNavigation();
-			$this->assign( 'settingsnavigation', $settingsNavigation);
-			foreach($navigation as $entry) {
+			$this->assign('settingsnavigation', $settingsNavigation);
+			foreach ($navigation as $entry) {
 				if ($entry['active']) {
-					$this->assign( 'application', $entry['name'] );
+					$this->assign('application', $entry['name']);
 					break;
 				}
 			}
 			
-			foreach($settingsNavigation as $entry) {
+			foreach ($settingsNavigation as $entry) {
 				if ($entry['active']) {
-					$this->assign( 'application', $entry['name'] );
+					$this->assign('application', $entry['name']);
 					break;
 				}
 			}
@@ -123,7 +123,7 @@ 
 		// Send the language to our layouts
 		$this->assign('language', \OC::$server->getL10NFactory()->findLanguage());
 
-		if(\OC::$server->getSystemConfig()->getValue('installed', false)) {
+		if (\OC::$server->getSystemConfig()->getValue('installed', false)) {
 			if (empty(self::$versionHash)) {
 				$v = \OC_App::getAppVersions();
 				$v['core'] = implode('.', \OCP\Util::getVersion());
@@ -155,10 +155,10 @@ 
 				$this->append('jsfiles', \OC::$server->getURLGenerator()->linkToRoute('core.OCJS.getConfig', ['v' => self::$versionHash]));
 			}
 		}
-		foreach($jsFiles as $info) {
+		foreach ($jsFiles as $info) {
 			$web = $info[1];
 			$file = $info[2];
-			$this->append( 'jsfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
+			$this->append('jsfiles', $web.'/'.$file.$this->getVersionHashSuffix());
 		}
 
 		try {
@@ -169,7 +169,7 @@ 
 
 		// Do not initialise scss appdata until we have a fully installed instance
 		// Do not load scss for update, errors, installation or login page
-		if(\OC::$server->getSystemConfig()->getValue('installed', false)
+		if (\OC::$server->getSystemConfig()->getValue('installed', false)
 			&& !\OCP\Util::needUpgrade()
 			&& $pathInfo !== ''
 			&& !preg_match('/^\/login/', $pathInfo)) {
@@ -184,25 +184,25 @@ 
 		$this->assign('cssfiles', array());
 		$this->assign('printcssfiles', []);
 		$this->assign('versionHash', self::$versionHash);
-		foreach($cssFiles as $info) {
+		foreach ($cssFiles as $info) {
 			$web = $info[1];
 			$file = $info[2];
 
 			if (substr($file, -strlen('print.css')) === 'print.css') {
-				$this->append( 'printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
+				$this->append('printcssfiles', $web.'/'.$file.$this->getVersionHashSuffix());
 			} else {
-				$this->append( 'cssfiles', $web.'/'.$file . $this->getVersionHashSuffix()  );
+				$this->append('cssfiles', $web.'/'.$file.$this->getVersionHashSuffix());
 			}
 		}
 	}
 
 	protected function getVersionHashSuffix() {
-		if(\OC::$server->getConfig()->getSystemValue('debug', false)) {
+		if (\OC::$server->getConfig()->getSystemValue('debug', false)) {
 			// allows chrome workspace mapping in debug mode
 			return "";
 		}
 
-		return '?v=' . self::$versionHash;
+		return '?v='.self::$versionHash;
 	}
 
 	/**
@@ -213,7 +213,7 @@ 
 		// Read the selected theme from the config file
 		$theme = \OC_Util::getTheme();
 
-		if($compileScss) {
+		if ($compileScss) {
 			$SCSSCacher = new SCSSCacher(
 				\OC::$server->getLogger(),
 				\OC::$server->getAppDataDir('css'),
@@ -227,8 +227,8 @@ 
 		$locator = new \OC\Template\CSSResourceLocator(
 			\OC::$server->getLogger(),
 			$theme,
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
+			array(\OC::$SERVERROOT => \OC::$WEBROOT),
+			array(\OC::$SERVERROOT => \OC::$WEBROOT),
 			$SCSSCacher);
 		$locator->find($styles);
 		return $locator->getResources();
@@ -245,8 +245,8 @@ 
 		$locator = new \OC\Template\JSResourceLocator(
 			\OC::$server->getLogger(),
 			$theme,
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ),
-			array( \OC::$SERVERROOT => \OC::$WEBROOT ));
+			array(\OC::$SERVERROOT => \OC::$WEBROOT),
+			array(\OC::$SERVERROOT => \OC::$WEBROOT));
 		$locator->find($scripts);
 		return $locator->getResources();
 	}
@@ -259,7 +259,7 @@ 
 	 */
 	public static function convertToRelativePath($filePath) {
 		$relativePath = explode(\OC::$SERVERROOT, $filePath);
-		if(count($relativePath) !== 2) {
+		if (count($relativePath) !== 2) {
 			throw new \Exception('$filePath is not under the \OC::$SERVERROOT');
 		}
 

core/templates/layout.user.php

Braces +5 added lines, -2 removed lines

@@ -111,8 +111,11 @@
 								<?php foreach($_['navigation'] as $entry): ?>
 									<?php if($entry['showInHeader']): ?>
 										<li data-id="<?php p($entry['id']); ?>" class="in-header">
-									<?php else: ?>
-										<li data-id="<?php p($entry['id']); ?>">
+									<?php else {
+    : ?>
+										<li data-id="<?php p($entry['id']);
+}
+?>">
 									<?php endif; ?>
 									<a href="<?php print_unescaped($entry['href']); ?>" tabindex="3"
 										<?php if( $entry['active'] ): ?> class="active"<?php endif; ?>>

Indentation +10 added lines, -10 removed lines

@@ -4,9 +4,9 @@ 
 		<meta charset="utf-8">
 		<title>
 			<?php
-				p(!empty($_['application'])?$_['application'].' - ':'');
-				p($theme->getTitle());
-			?>
+                p(!empty($_['application'])?$_['application'].' - ':'');
+                p($theme->getTitle());
+            ?>
 		</title>
 		<meta http-equiv="X-UA-Compatible" content="IE=edge">
 		<meta name="referrer" content="never">
@@ -75,8 +75,8 @@ 
 							</li>
 						<?php endforeach; ?>
 							<li id="more-apps" class="menutoggle<?php
-							if ( !(count($_['navigation']) > $headerIconCount
-									|| (OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation'])>=$headerIconCount))): ?> hidden<?php endif; ?>">
+                            if ( !(count($_['navigation']) > $headerIconCount
+                                    || (OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation'])>=$headerIconCount))): ?> hidden<?php endif; ?>">
 								<a href="#">
 									<div class="icon-more-white"></div>
 									<span><?php p($l->t('More apps')); ?>
@@ -84,8 +84,8 @@ 
 								</a>
 							</li>
 							<?php
-							/* show "More apps" link to app administration directly in app navigation, as last entry */
-							?>
+                            /* show "More apps" link to app administration directly in app navigation, as last entry */
+                            ?>
 								<li id="apps-management" <?php if(OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation'])>$headerIconCount-1): ?>class="hidden"<?php endif; ?>>
 									<a href="<?php print_unescaped(\OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')); ?>" tabindex="4"
 										<?php if( $_['appsmanagement_active'] ): ?> class="active"<?php endif; ?>>
@@ -123,9 +123,9 @@ 
 									</li>
 								<?php endforeach; ?>
 								<?php
-								/* show "More apps" link to app administration directly in app navigation, as last entry */
-								if(OC_User::isAdminUser(OC_User::getUser())):
-									?>
+                                /* show "More apps" link to app administration directly in app navigation, as last entry */
+                                if(OC_User::isAdminUser(OC_User::getUser())):
+                                    ?>
 									<li id="apps-management">
 										<a href="<?php print_unescaped(\OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')); ?>" tabindex="4"
 											<?php if( $_['appsmanagement_active'] ): ?> class="active"<?php endif; ?>>

Spacing +30 added lines, -30 removed lines

@@ -4,7 +4,7 @@ 
 		<meta charset="utf-8">
 		<title>
 			<?php
-				p(!empty($_['application'])?$_['application'].' - ':'');
+				p(!empty($_['application']) ? $_['application'].' - ' : '');
 				p($theme->getTitle());
 			?>
 		</title>
@@ -14,16 +14,16 @@ 
 		<meta name="apple-itunes-app" content="app-id=<?php p($theme->getiTunesAppId()); ?>">
 		<meta name="apple-mobile-web-app-capable" content="yes">
 		<meta name="apple-mobile-web-app-status-bar-style" content="black">
-		<meta name="apple-mobile-web-app-title" content="<?php p((!empty($_['application']) && $_['appid']!='files')? $_['application']:$theme->getTitle()); ?>">
+		<meta name="apple-mobile-web-app-title" content="<?php p((!empty($_['application']) && $_['appid'] != 'files') ? $_['application'] : $theme->getTitle()); ?>">
 		<meta name="mobile-web-app-capable" content="yes">
 		<meta name="theme-color" content="<?php p($theme->getMailHeaderColor()); ?>">
 		<link rel="icon" href="<?php print_unescaped(image_path($_['appid'], 'favicon.ico')); /* IE11+ supports png */ ?>">
 		<link rel="apple-touch-icon-precomposed" href="<?php print_unescaped(image_path($_['appid'], 'favicon-touch.png')); ?>">
 		<link rel="mask-icon" sizes="any" href="<?php print_unescaped(image_path($_['appid'], 'favicon-mask.svg')); ?>" color="#0082c9">
-		<?php foreach($_['cssfiles'] as $cssfile): ?>
+		<?php foreach ($_['cssfiles'] as $cssfile): ?>
 			<link rel="stylesheet" href="<?php print_unescaped($cssfile); ?>">
 		<?php endforeach; ?>
-		<?php foreach($_['printcssfiles'] as $cssfile): ?>
+		<?php foreach ($_['printcssfiles'] as $cssfile): ?>
 			<link rel="stylesheet" href="<?php print_unescaped($cssfile); ?>" media="print">
 		<?php endforeach; ?>
 		<?php if (isset($_['inline_ocjs'])): ?>
@@ -31,12 +31,12 @@ 
 				<?php print_unescaped($_['inline_ocjs']); ?>
 			</script>
 		<?php endif; ?>
-		<?php foreach($_['jsfiles'] as $jsfile): ?>
+		<?php foreach ($_['jsfiles'] as $jsfile): ?>
 			<script nonce="<?php p(\OC::$server->getContentSecurityPolicyNonceManager()->getNonce()) ?>" src="<?php print_unescaped($jsfile); ?>"></script>
 		<?php endforeach; ?>
 		<?php print_unescaped($_['headers']); ?>
 	</head>
-	<body id="<?php p($_['bodyid']);?>">
+	<body id="<?php p($_['bodyid']); ?>">
 	<?php include('layout.noscript.warning.php'); ?>
 	<div id="notification-container">
 		<div id="notification"></div>
@@ -54,7 +54,7 @@ 
 
 				<a href="#" class="header-appname-container menutoggle" tabindex="2">
 					<h1 class="header-appname">
-						<?php p(!empty($_['application'])?$_['application']: $l->t('Apps')); ?>
+						<?php p(!empty($_['application']) ? $_['application'] : $l->t('Apps')); ?>
 					</h1>
 					<div class="icon-caret"></div>
 				</a>
@@ -62,11 +62,11 @@ 
 				<div id="appmenu">
 					<ul>
 						<?php $headerIconCount = 8; ?>
-						<?php foreach($_['headernavigation'] as $entry): ?>
+						<?php foreach ($_['headernavigation'] as $entry): ?>
 							<li data-id="<?php p($entry['id']); ?>">
 								<a href="<?php print_unescaped($entry['href']); ?>" tabindex="3"
-									<?php if( $entry['active'] ): ?> class="active"<?php endif; ?>>
-									<img src="<?php print_unescaped($entry['icon'] . '?v=' . $_['versionHash']); ?>"  class="app-icon" />
+									<?php if ($entry['active']): ?> class="active"<?php endif; ?>>
+									<img src="<?php print_unescaped($entry['icon'].'?v='.$_['versionHash']); ?>"  class="app-icon" />
 									<div class="icon-loading-dark" style="display:none;"></div>
 									<span>
 								<?php p($entry['name']); ?>
@@ -75,8 +75,8 @@ 
 							</li>
 						<?php endforeach; ?>
 							<li id="more-apps" class="menutoggle<?php
-							if ( !(count($_['navigation']) > $headerIconCount
-									|| (OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation'])>=$headerIconCount))): ?> hidden<?php endif; ?>">
+							if (!(count($_['navigation']) > $headerIconCount
+									|| (OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation']) >= $headerIconCount))): ?> hidden<?php endif; ?>">
 								<a href="#">
 									<div class="icon-more-white"></div>
 									<span><?php p($l->t('More apps')); ?>
@@ -86,10 +86,10 @@ 
 							<?php
 							/* show "More apps" link to app administration directly in app navigation, as last entry */
 							?>
-								<li id="apps-management" <?php if(OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation'])>$headerIconCount-1): ?>class="hidden"<?php endif; ?>>
+								<li id="apps-management" <?php if (OC_User::isAdminUser(OC_User::getUser()) && count($_['navigation']) > $headerIconCount - 1): ?>class="hidden"<?php endif; ?>>
 									<a href="<?php print_unescaped(\OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')); ?>" tabindex="4"
-										<?php if( $_['appsmanagement_active'] ): ?> class="active"<?php endif; ?>>
-										<img src="<?php print_unescaped(image_path('settings', 'apps.svg') . '?v=' . $_['versionHash']); ?>" />
+										<?php if ($_['appsmanagement_active']): ?> class="active"<?php endif; ?>>
+										<img src="<?php print_unescaped(image_path('settings', 'apps.svg').'?v='.$_['versionHash']); ?>" />
 										</svg>
 										<div class="icon-loading-dark" style="display:none;"></div>
 										<span>
@@ -103,17 +103,17 @@ 
 				<nav role="navigation"><div id="navigation">
 						<div id="apps">
 							<ul>
-								<?php foreach($_['navigation'] as $entry): ?>
-									<?php if($entry['showInHeader']): ?>
+								<?php foreach ($_['navigation'] as $entry): ?>
+									<?php if ($entry['showInHeader']): ?>
 										<li data-id="<?php p($entry['id']); ?>" class="in-header">
 									<?php else: ?>
 										<li data-id="<?php p($entry['id']); ?>">
 									<?php endif; ?>
 									<a href="<?php print_unescaped($entry['href']); ?>" tabindex="3"
-										<?php if( $entry['active'] ): ?> class="active"<?php endif; ?>>
+										<?php if ($entry['active']): ?> class="active"<?php endif; ?>>
 										<svg width="32" height="32" viewBox="0 0 32 32">
 											<defs><filter id="invert"><feColorMatrix in="SourceGraphic" type="matrix" values="-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0"></feColorMatrix></filter></defs>
-											<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped($entry['icon'] . '?v=' . $_['versionHash']); ?>"  class="app-icon"></image>
+											<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped($entry['icon'].'?v='.$_['versionHash']); ?>"  class="app-icon"></image>
 										</svg>
 										<div class="icon-loading-dark" style="display:none;"></div>
 										<span>
@@ -124,14 +124,14 @@ 
 								<?php endforeach; ?>
 								<?php
 								/* show "More apps" link to app administration directly in app navigation, as last entry */
-								if(OC_User::isAdminUser(OC_User::getUser())):
+								if (OC_User::isAdminUser(OC_User::getUser())):
 									?>
 									<li id="apps-management">
 										<a href="<?php print_unescaped(\OC::$server->getURLGenerator()->linkToRoute('settings.AppSettings.viewApps')); ?>" tabindex="4"
-											<?php if( $_['appsmanagement_active'] ): ?> class="active"<?php endif; ?>>
+											<?php if ($_['appsmanagement_active']): ?> class="active"<?php endif; ?>>
 											<svg width="32" height="32" viewBox="0 0 32 32" class="app-icon">
 												<defs><filter id="invert"><feColorMatrix in="SourceGraphic" type="matrix" values="-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0"></feColorMatrix></filter></defs>
-												<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped(image_path('settings', 'apps.svg') . '?v=' . $_['versionHash']); ?>"></image>
+												<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped(image_path('settings', 'apps.svg').'?v='.$_['versionHash']); ?>"></image>
 											</svg>
 											<div class="icon-loading-dark" style="display:none;"></div>
 											<span>
@@ -150,7 +150,7 @@ 
 			<div id="header-right">
 				<form class="searchbox" action="#" method="post" role="search" novalidate>
 					<label for="searchbox" class="hidden-visually">
-						<?php p($l->t('Search'));?>
+						<?php p($l->t('Search')); ?>
 					</label>
 					<input id="searchbox" type="search" name="query"
 						value="" required
@@ -162,8 +162,8 @@ 
 						<div class="avatardiv<?php if ($_['userAvatarSet']) { print_unescaped(' avatardiv-shown'); } else { print_unescaped('" style="display: none'); } ?>">
 							<?php if ($_['userAvatarSet']): ?>
 								<img alt="" width="32" height="32"
-								src="<?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 32, 'v' => $_['userAvatarVersion']]));?>"
-								srcset="<?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 64, 'v' => $_['userAvatarVersion']]));?> 2x, <?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 128, 'v' => $_['userAvatarVersion']]));?> 4x"
+								src="<?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 32, 'v' => $_['userAvatarVersion']])); ?>"
+								srcset="<?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 64, 'v' => $_['userAvatarVersion']])); ?> 2x, <?php p(\OC::$server->getURLGenerator()->linkToRoute('core.avatar.getAvatar', ['userId' => $_['user_uid'], 'size' => 128, 'v' => $_['userAvatarVersion']])); ?> 4x"
 								>
 							<?php endif; ?>
 						</div>
@@ -172,19 +172,19 @@ 
 					</div>
 					<div id="expanddiv">
 					<ul>
-					<?php foreach($_['settingsnavigation'] as $entry):?>
+					<?php foreach ($_['settingsnavigation'] as $entry):?>
 						<li>
 							<a href="<?php print_unescaped($entry['href']); ?>"
-								<?php if( $entry["active"] ): ?> class="active"<?php endif; ?>>
-								<img alt="" src="<?php print_unescaped($entry['icon'] . '?v=' . $_['versionHash']); ?>">
+								<?php if ($entry["active"]): ?> class="active"<?php endif; ?>>
+								<img alt="" src="<?php print_unescaped($entry['icon'].'?v='.$_['versionHash']); ?>">
 								<?php p($entry['name']) ?>
 							</a>
 						</li>
 					<?php endforeach; ?>
 						<li>
 							<a id="logout" <?php print_unescaped(OC_User::getLogoutAttribute()); ?>>
-								<img alt="" src="<?php print_unescaped(image_path('', 'actions/logout.svg') . '?v=' . $_['versionHash']); ?>">
-								<?php p($l->t('Log out'));?>
+								<img alt="" src="<?php print_unescaped(image_path('', 'actions/logout.svg').'?v='.$_['versionHash']); ?>">
+								<?php p($l->t('Log out')); ?>
 							</a>
 						</li>
 					</ul>

lib/private/legacy/app.php

Indentation +1338 added lines, -1338 removed lines

@@ -61,1342 +61,1342 @@
  * upgrading and removing apps.
  */
 class OC_App {
-	static private $appVersion = [];
-	static private $adminForms = array();
-	static private $personalForms = array();
-	static private $appInfo = array();
-	static private $appTypes = array();
-	static private $loadedApps = array();
-	static private $altLogin = array();
-	static private $alreadyRegistered = [];
-	const officialApp = 200;
-
-	/**
-	 * clean the appId
-	 *
-	 * @param string|boolean $app AppId that needs to be cleaned
-	 * @return string
-	 */
-	public static function cleanAppId($app) {
-		return str_replace(array('\0', '/', '\\', '..'), '', $app);
-	}
-
-	/**
-	 * Check if an app is loaded
-	 *
-	 * @param string $app
-	 * @return bool
-	 */
-	public static function isAppLoaded($app) {
-		return in_array($app, self::$loadedApps, true);
-	}
-
-	/**
-	 * loads all apps
-	 *
-	 * @param string[] | string | null $types
-	 * @return bool
-	 *
-	 * This function walks through the ownCloud directory and loads all apps
-	 * it can find. A directory contains an app if the file /appinfo/info.xml
-	 * exists.
-	 *
-	 * if $types is set, only apps of those types will be loaded
-	 */
-	public static function loadApps($types = null) {
-		if (\OC::$server->getSystemConfig()->getValue('maintenance', false)) {
-			return false;
-		}
-		// Load the enabled apps here
-		$apps = self::getEnabledApps();
-
-		// Add each apps' folder as allowed class path
-		foreach($apps as $app) {
-			$path = self::getAppPath($app);
-			if($path !== false) {
-				self::registerAutoloading($app, $path);
-			}
-		}
-
-		// prevent app.php from printing output
-		ob_start();
-		foreach ($apps as $app) {
-			if ((is_null($types) or self::isType($app, $types)) && !in_array($app, self::$loadedApps)) {
-				self::loadApp($app);
-			}
-		}
-		ob_end_clean();
-
-		return true;
-	}
-
-	/**
-	 * load a single app
-	 *
-	 * @param string $app
-	 * @param bool $checkUpgrade whether an upgrade check should be done
-	 * @throws \OC\NeedsUpdateException
-	 */
-	public static function loadApp($app, $checkUpgrade = true) {
-		self::$loadedApps[] = $app;
-		$appPath = self::getAppPath($app);
-		if($appPath === false) {
-			return;
-		}
-
-		// in case someone calls loadApp() directly
-		self::registerAutoloading($app, $appPath);
-
-		if (is_file($appPath . '/appinfo/app.php')) {
-			\OC::$server->getEventLogger()->start('load_app_' . $app, 'Load app: ' . $app);
-			if ($checkUpgrade and self::shouldUpgrade($app)) {
-				throw new \OC\NeedsUpdateException();
-			}
-			self::requireAppFile($app);
-			if (self::isType($app, array('authentication'))) {
-				// since authentication apps affect the "is app enabled for group" check,
-				// the enabled apps cache needs to be cleared to make sure that the
-				// next time getEnableApps() is called it will also include apps that were
-				// enabled for groups
-				self::$enabledAppsCache = array();
-			}
-			\OC::$server->getEventLogger()->end('load_app_' . $app);
-		}
-
-		$info = self::getAppInfo($app);
-		if (!empty($info['activity']['filters'])) {
-			foreach ($info['activity']['filters'] as $filter) {
-				\OC::$server->getActivityManager()->registerFilter($filter);
-			}
-		}
-		if (!empty($info['activity']['settings'])) {
-			foreach ($info['activity']['settings'] as $setting) {
-				\OC::$server->getActivityManager()->registerSetting($setting);
-			}
-		}
-		if (!empty($info['activity']['providers'])) {
-			foreach ($info['activity']['providers'] as $provider) {
-				\OC::$server->getActivityManager()->registerProvider($provider);
-			}
-		}
-	}
-
-	/**
-	 * @internal
-	 * @param string $app
-	 * @param string $path
-	 */
-	public static function registerAutoloading($app, $path) {
-		$key = $app . '-' . $path;
-		if(isset(self::$alreadyRegistered[$key])) {
-			return;
-		}
-		self::$alreadyRegistered[$key] = true;
-		// Register on PSR-4 composer autoloader
-		$appNamespace = \OC\AppFramework\App::buildAppNamespace($app);
-		\OC::$composerAutoloader->addPsr4($appNamespace . '\\', $path . '/lib/', true);
-		if (defined('PHPUNIT_RUN') || defined('CLI_TEST_RUN')) {
-			\OC::$composerAutoloader->addPsr4($appNamespace . '\\Tests\\', $path . '/tests/', true);
-		}
-
-		// Register on legacy autoloader
-		\OC::$loader->addValidRoot($path);
-	}
-
-	/**
-	 * Load app.php from the given app
-	 *
-	 * @param string $app app name
-	 */
-	private static function requireAppFile($app) {
-		try {
-			// encapsulated here to avoid variable scope conflicts
-			require_once $app . '/appinfo/app.php';
-		} catch (Error $ex) {
-			\OC::$server->getLogger()->logException($ex);
-			$blacklist = \OC::$server->getAppManager()->getAlwaysEnabledApps();
-			if (!in_array($app, $blacklist)) {
-				self::disable($app);
-			}
-		}
-	}
-
-	/**
-	 * check if an app is of a specific type
-	 *
-	 * @param string $app
-	 * @param string|array $types
-	 * @return bool
-	 */
-	public static function isType($app, $types) {
-		if (is_string($types)) {
-			$types = array($types);
-		}
-		$appTypes = self::getAppTypes($app);
-		foreach ($types as $type) {
-			if (array_search($type, $appTypes) !== false) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * get the types of an app
-	 *
-	 * @param string $app
-	 * @return array
-	 */
-	private static function getAppTypes($app) {
-		//load the cache
-		if (count(self::$appTypes) == 0) {
-			self::$appTypes = \OC::$server->getAppConfig()->getValues(false, 'types');
-		}
-
-		if (isset(self::$appTypes[$app])) {
-			return explode(',', self::$appTypes[$app]);
-		} else {
-			return array();
-		}
-	}
-
-	/**
-	 * read app types from info.xml and cache them in the database
-	 */
-	public static function setAppTypes($app) {
-		$appData = self::getAppInfo($app);
-		if(!is_array($appData)) {
-			return;
-		}
-
-		if (isset($appData['types'])) {
-			$appTypes = implode(',', $appData['types']);
-		} else {
-			$appTypes = '';
-			$appData['types'] = [];
-		}
-
-		\OC::$server->getAppConfig()->setValue($app, 'types', $appTypes);
-
-		if (\OC::$server->getAppManager()->hasProtectedAppType($appData['types'])) {
-			$enabled = \OC::$server->getAppConfig()->getValue($app, 'enabled', 'yes');
-			if ($enabled !== 'yes' && $enabled !== 'no') {
-				\OC::$server->getAppConfig()->setValue($app, 'enabled', 'yes');
-			}
-		}
-	}
-
-	/**
-	 * check if app is shipped
-	 *
-	 * @param string $appId the id of the app to check
-	 * @return bool
-	 *
-	 * Check if an app that is installed is a shipped app or installed from the appstore.
-	 */
-	public static function isShipped($appId) {
-		return \OC::$server->getAppManager()->isShipped($appId);
-	}
-
-	/**
-	 * get all enabled apps
-	 */
-	protected static $enabledAppsCache = array();
-
-	/**
-	 * Returns apps enabled for the current user.
-	 *
-	 * @param bool $forceRefresh whether to refresh the cache
-	 * @param bool $all whether to return apps for all users, not only the
-	 * currently logged in one
-	 * @return string[]
-	 */
-	public static function getEnabledApps($forceRefresh = false, $all = false) {
-		if (!\OC::$server->getSystemConfig()->getValue('installed', false)) {
-			return array();
-		}
-		// in incognito mode or when logged out, $user will be false,
-		// which is also the case during an upgrade
-		$appManager = \OC::$server->getAppManager();
-		if ($all) {
-			$user = null;
-		} else {
-			$user = \OC::$server->getUserSession()->getUser();
-		}
-
-		if (is_null($user)) {
-			$apps = $appManager->getInstalledApps();
-		} else {
-			$apps = $appManager->getEnabledAppsForUser($user);
-		}
-		$apps = array_filter($apps, function ($app) {
-			return $app !== 'files';//we add this manually
-		});
-		sort($apps);
-		array_unshift($apps, 'files');
-		return $apps;
-	}
-
-	/**
-	 * checks whether or not an app is enabled
-	 *
-	 * @param string $app app
-	 * @return bool
-	 *
-	 * This function checks whether or not an app is enabled.
-	 */
-	public static function isEnabled($app) {
-		return \OC::$server->getAppManager()->isEnabledForUser($app);
-	}
-
-	/**
-	 * enables an app
-	 *
-	 * @param string $appId
-	 * @param array $groups (optional) when set, only these groups will have access to the app
-	 * @throws \Exception
-	 * @return void
-	 *
-	 * This function set an app as enabled in appconfig.
-	 */
-	public function enable($appId,
-						   $groups = null) {
-		self::$enabledAppsCache = []; // flush
-		$l = \OC::$server->getL10N('core');
-		$config = \OC::$server->getConfig();
-
-		// Check if app is already downloaded
-		$installer = new Installer(
-			\OC::$server->getAppFetcher(),
-			\OC::$server->getHTTPClientService(),
-			\OC::$server->getTempManager(),
-			\OC::$server->getLogger()
-		);
-		$isDownloaded = $installer->isDownloaded($appId);
-
-		if(!$isDownloaded) {
-			$installer->downloadApp($appId);
-		}
-
-		if (!Installer::isInstalled($appId)) {
-			$appId = self::installApp(
-				$appId,
-				$config,
-				$l
-			);
-			$appPath = self::getAppPath($appId);
-			self::registerAutoloading($appId, $appPath);
-			$installer->installApp($appId);
-		} else {
-			// check for required dependencies
-			$info = self::getAppInfo($appId);
-			self::checkAppDependencies($config, $l, $info);
-			$appPath = self::getAppPath($appId);
-			self::registerAutoloading($appId, $appPath);
-			$installer->installApp($appId);
-		}
-
-		$appManager = \OC::$server->getAppManager();
-		if (!is_null($groups)) {
-			$groupManager = \OC::$server->getGroupManager();
-			$groupsList = [];
-			foreach ($groups as $group) {
-				$groupItem = $groupManager->get($group);
-				if ($groupItem instanceof \OCP\IGroup) {
-					$groupsList[] = $groupManager->get($group);
-				}
-			}
-			$appManager->enableAppForGroups($appId, $groupsList);
-		} else {
-			$appManager->enableApp($appId);
-		}
-
-		$info = self::getAppInfo($appId);
-		if(isset($info['settings']) && is_array($info['settings'])) {
-			$appPath = self::getAppPath($appId);
-			self::registerAutoloading($appId, $appPath);
-			\OC::$server->getSettingsManager()->setupSettings($info['settings']);
-		}
-	}
-
-	/**
-	 * @param string $app
-	 * @return bool
-	 */
-	public static function removeApp($app) {
-		if (self::isShipped($app)) {
-			return false;
-		}
-
-		$installer = new Installer(
-			\OC::$server->getAppFetcher(),
-			\OC::$server->getHTTPClientService(),
-			\OC::$server->getTempManager(),
-			\OC::$server->getLogger()
-		);
-		return $installer->removeApp($app);
-	}
-
-	/**
-	 * This function set an app as disabled in appconfig.
-	 *
-	 * @param string $app app
-	 * @throws Exception
-	 */
-	public static function disable($app) {
-		// flush
-		self::$enabledAppsCache = array();
-
-		// run uninstall steps
-		$appData = OC_App::getAppInfo($app);
-		if (!is_null($appData)) {
-			OC_App::executeRepairSteps($app, $appData['repair-steps']['uninstall']);
-		}
-
-		// emit disable hook - needed anymore ?
-		\OC_Hook::emit('OC_App', 'pre_disable', array('app' => $app));
-
-		// finally disable it
-		$appManager = \OC::$server->getAppManager();
-		$appManager->disableApp($app);
-	}
-
-	/**
-	 * Returns the Settings Navigation
-	 *
-	 * @return string[]
-	 *
-	 * This function returns an array containing all settings pages added. The
-	 * entries are sorted by the key 'order' ascending.
-	 */
-	public static function getSettingsNavigation() {
-		$l = \OC::$server->getL10N('lib');
-		$urlGenerator = \OC::$server->getURLGenerator();
-
-		$settings = array();
-		// by default, settings only contain the help menu
-		if (\OC::$server->getSystemConfig()->getValue('knowledgebaseenabled', true)) {
-			$settings = array(
-				array(
-					"id" => "help",
-					"order" => 4,
-					"href" => $urlGenerator->linkToRoute('settings_help'),
-					"name" => $l->t("Help"),
-					"icon" => $urlGenerator->imagePath("settings", "help.svg")
-				)
-			);
-		}
-
-		// if the user is logged-in
-		if (\OC::$server->getUserSession()->isLoggedIn()) {
-			// personal menu
-			$settings[] = array(
-				"id" => "personal",
-				"order" => 1,
-				"href" => $urlGenerator->linkToRoute('settings_personal'),
-				"name" => $l->t("Personal"),
-				"icon" => $urlGenerator->imagePath("settings", "personal.svg")
-			);
-
-			//SubAdmins are also allowed to access user management
-			$userObject = \OC::$server->getUserSession()->getUser();
-			$isSubAdmin = false;
-			if($userObject !== null) {
-				$isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
-			}
-			if ($isSubAdmin) {
-				// admin users menu
-				$settings[] = array(
-					"id" => "core_users",
-					"order" => 3,
-					"href" => $urlGenerator->linkToRoute('settings_users'),
-					"name" => $l->t("Users"),
-					"icon" => $urlGenerator->imagePath("settings", "users.svg")
-				);
-			}
-
-			// if the user is an admin
-			if (OC_User::isAdminUser(OC_User::getUser())) {
-				// admin settings
-				$settings[] = array(
-					"id" => "admin",
-					"order" => 2,
-					"href" => $urlGenerator->linkToRoute('settings.AdminSettings.index'),
-					"name" => $l->t("Admin"),
-					"icon" => $urlGenerator->imagePath("settings", "admin.svg")
-				);
-			}
-		}
-
-		$navigation = self::proceedNavigation($settings);
-		return $navigation;
-	}
-
-	// This is private as well. It simply works, so don't ask for more details
-	private static function proceedNavigation($list) {
-		$headerIconCount = 8;
-		if(OC_User::isAdminUser(OC_User::getUser())) {
-			$headerIconCount--;
-		}
-		usort($list, function($a, $b) {
-			if (isset($a['order']) && isset($b['order'])) {
-				return ($a['order'] < $b['order']) ? -1 : 1;
-			} else if (isset($a['order']) || isset($b['order'])) {
-				return isset($a['order']) ? -1 : 1;
-			} else {
-				return ($a['name'] < $b['name']) ? -1 : 1;
-			}
-		});
-
-		$activeAppIndex = -1;
-		$activeApp = OC::$server->getNavigationManager()->getActiveEntry();
-		foreach ($list as $index => &$navEntry) {
-			if ($navEntry['id'] == $activeApp) {
-				$navEntry['active'] = true;
-				$activeAppIndex = $index;
-			} else {
-				$navEntry['active'] = false;
-			}
-		}
-		unset($navEntry);
-
-		if($activeAppIndex > ($headerIconCount-1)) {
-			$active = $list[$activeAppIndex];
-			$lastInHeader = $list[$headerIconCount-1];
-			$list[$headerIconCount-1] = $active;
-			$list[$activeAppIndex] = $lastInHeader;
-		}
-
-		foreach ($list as $index => &$navEntry) {
-			$navEntry['showInHeader'] = false;
-			if($index < $headerIconCount) {
-				$navEntry['showInHeader'] = true;
-			}
-		}
-
-
-
-		return $list;
-	}
-
-	public static function proceedAppNavigation($entries) {
-		$headerIconCount = 8;
-		if(OC_User::isAdminUser(OC_User::getUser())) {
-			$headerIconCount--;
-		}
-		$activeAppIndex = -1;
-		$list = self::proceedNavigation($entries);
-
-		$activeApp = OC::$server->getNavigationManager()->getActiveEntry();
-		foreach ($list as $index => &$navEntry) {
-			if ($navEntry['id'] == $activeApp) {
-				$navEntry['active'] = true;
-				$activeAppIndex = $index;
-			} else {
-				$navEntry['active'] = false;
-			}
-		}
-		// move active item to last position
-		if($activeAppIndex > ($headerIconCount-1)) {
-			$active = $list[$activeAppIndex];
-			$lastInHeader = $list[$headerIconCount-1];
-			$list[$headerIconCount-1] = $active;
-			$list[$activeAppIndex] = $lastInHeader;
-		}
-		$list = array_slice($list, 0, $headerIconCount);
-
-		return $list;
-	}
-
-	/**
-	 * Get the path where to install apps
-	 *
-	 * @return string|false
-	 */
-	public static function getInstallPath() {
-		if (\OC::$server->getSystemConfig()->getValue('appstoreenabled', true) == false) {
-			return false;
-		}
-
-		foreach (OC::$APPSROOTS as $dir) {
-			if (isset($dir['writable']) && $dir['writable'] === true) {
-				return $dir['path'];
-			}
-		}
-
-		\OCP\Util::writeLog('core', 'No application directories are marked as writable.', \OCP\Util::ERROR);
-		return null;
-	}
-
-
-	/**
-	 * search for an app in all app-directories
-	 *
-	 * @param string $appId
-	 * @return false|string
-	 */
-	public static function findAppInDirectories($appId) {
-		$sanitizedAppId = self::cleanAppId($appId);
-		if($sanitizedAppId !== $appId) {
-			return false;
-		}
-		static $app_dir = array();
-
-		if (isset($app_dir[$appId])) {
-			return $app_dir[$appId];
-		}
-
-		$possibleApps = array();
-		foreach (OC::$APPSROOTS as $dir) {
-			if (file_exists($dir['path'] . '/' . $appId)) {
-				$possibleApps[] = $dir;
-			}
-		}
-
-		if (empty($possibleApps)) {
-			return false;
-		} elseif (count($possibleApps) === 1) {
-			$dir = array_shift($possibleApps);
-			$app_dir[$appId] = $dir;
-			return $dir;
-		} else {
-			$versionToLoad = array();
-			foreach ($possibleApps as $possibleApp) {
-				$version = self::getAppVersionByPath($possibleApp['path']);
-				if (empty($versionToLoad) || version_compare($version, $versionToLoad['version'], '>')) {
-					$versionToLoad = array(
-						'dir' => $possibleApp,
-						'version' => $version,
-					);
-				}
-			}
-			$app_dir[$appId] = $versionToLoad['dir'];
-			return $versionToLoad['dir'];
-			//TODO - write test
-		}
-	}
-
-	/**
-	 * Get the directory for the given app.
-	 * If the app is defined in multiple directories, the first one is taken. (false if not found)
-	 *
-	 * @param string $appId
-	 * @return string|false
-	 */
-	public static function getAppPath($appId) {
-		if ($appId === null || trim($appId) === '') {
-			return false;
-		}
-
-		if (($dir = self::findAppInDirectories($appId)) != false) {
-			return $dir['path'] . '/' . $appId;
-		}
-		return false;
-	}
-
-	/**
-	 * Get the path for the given app on the access
-	 * If the app is defined in multiple directories, the first one is taken. (false if not found)
-	 *
-	 * @param string $appId
-	 * @return string|false
-	 */
-	public static function getAppWebPath($appId) {
-		if (($dir = self::findAppInDirectories($appId)) != false) {
-			return OC::$WEBROOT . $dir['url'] . '/' . $appId;
-		}
-		return false;
-	}
-
-	/**
-	 * get the last version of the app from appinfo/info.xml
-	 *
-	 * @param string $appId
-	 * @param bool $useCache
-	 * @return string
-	 */
-	public static function getAppVersion($appId, $useCache = true) {
-		if($useCache && isset(self::$appVersion[$appId])) {
-			return self::$appVersion[$appId];
-		}
-
-		$file = self::getAppPath($appId);
-		self::$appVersion[$appId] = ($file !== false) ? self::getAppVersionByPath($file) : '0';
-		return self::$appVersion[$appId];
-	}
-
-	/**
-	 * get app's version based on it's path
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public static function getAppVersionByPath($path) {
-		$infoFile = $path . '/appinfo/info.xml';
-		$appData = self::getAppInfo($infoFile, true);
-		return isset($appData['version']) ? $appData['version'] : '';
-	}
-
-
-	/**
-	 * Read all app metadata from the info.xml file
-	 *
-	 * @param string $appId id of the app or the path of the info.xml file
-	 * @param bool $path
-	 * @param string $lang
-	 * @return array|null
-	 * @note all data is read from info.xml, not just pre-defined fields
-	 */
-	public static function getAppInfo($appId, $path = false, $lang = null) {
-		if ($path) {
-			$file = $appId;
-		} else {
-			if ($lang === null && isset(self::$appInfo[$appId])) {
-				return self::$appInfo[$appId];
-			}
-			$appPath = self::getAppPath($appId);
-			if($appPath === false) {
-				return null;
-			}
-			$file = $appPath . '/appinfo/info.xml';
-		}
-
-		$parser = new InfoParser(\OC::$server->getMemCacheFactory()->create('core.appinfo'));
-		$data = $parser->parse($file);
-
-		if (is_array($data)) {
-			$data = OC_App::parseAppInfo($data, $lang);
-		}
-		if(isset($data['ocsid'])) {
-			$storedId = \OC::$server->getConfig()->getAppValue($appId, 'ocsid');
-			if($storedId !== '' && $storedId !== $data['ocsid']) {
-				$data['ocsid'] = $storedId;
-			}
-		}
-
-		if ($lang === null) {
-			self::$appInfo[$appId] = $data;
-		}
-
-		return $data;
-	}
-
-	/**
-	 * Returns the navigation
-	 *
-	 * @return array
-	 *
-	 * This function returns an array containing all entries added. The
-	 * entries are sorted by the key 'order' ascending. Additional to the keys
-	 * given for each app the following keys exist:
-	 *   - active: boolean, signals if the user is on this navigation entry
-	 */
-	public static function getNavigation() {
-		$entries = OC::$server->getNavigationManager()->getAll();
-		$navigation = self::proceedNavigation($entries);
-		return $navigation;
-	}
-
-	/**
-	 * Returns the navigation inside the header bar
-	 *
-	 * @return array
-	 *
-	 * This function returns an array containing all entries added. The
-	 * entries are sorted by the key 'order' ascending. Additional to the keys
-	 * given for each app the following keys exist:
-	 *   - active: boolean, signals if the user is on this navigation entry
-	 */
-	public static function getHeaderNavigation() {
-		$entries = OC::$server->getNavigationManager()->getAll();
-		$navigation = self::proceedAppNavigation($entries);
-		return $navigation;
-	}
-
-	/**
-	 * get the id of loaded app
-	 *
-	 * @return string
-	 */
-	public static function getCurrentApp() {
-		$request = \OC::$server->getRequest();
-		$script = substr($request->getScriptName(), strlen(OC::$WEBROOT) + 1);
-		$topFolder = substr($script, 0, strpos($script, '/'));
-		if (empty($topFolder)) {
-			$path_info = $request->getPathInfo();
-			if ($path_info) {
-				$topFolder = substr($path_info, 1, strpos($path_info, '/', 1) - 1);
-			}
-		}
-		if ($topFolder == 'apps') {
-			$length = strlen($topFolder);
-			return substr($script, $length + 1, strpos($script, '/', $length + 1) - $length - 1);
-		} else {
-			return $topFolder;
-		}
-	}
-
-	/**
-	 * @param string $type
-	 * @return array
-	 */
-	public static function getForms($type) {
-		$forms = array();
-		switch ($type) {
-			case 'admin':
-				$source = self::$adminForms;
-				break;
-			case 'personal':
-				$source = self::$personalForms;
-				break;
-			default:
-				return array();
-		}
-		foreach ($source as $form) {
-			$forms[] = include $form;
-		}
-		return $forms;
-	}
-
-	/**
-	 * register an admin form to be shown
-	 *
-	 * @param string $app
-	 * @param string $page
-	 */
-	public static function registerAdmin($app, $page) {
-		self::$adminForms[] = $app . '/' . $page . '.php';
-	}
-
-	/**
-	 * register a personal form to be shown
-	 * @param string $app
-	 * @param string $page
-	 */
-	public static function registerPersonal($app, $page) {
-		self::$personalForms[] = $app . '/' . $page . '.php';
-	}
-
-	/**
-	 * @param array $entry
-	 */
-	public static function registerLogIn(array $entry) {
-		self::$altLogin[] = $entry;
-	}
-
-	/**
-	 * @return array
-	 */
-	public static function getAlternativeLogIns() {
-		return self::$altLogin;
-	}
-
-	/**
-	 * get a list of all apps in the apps folder
-	 *
-	 * @return array an array of app names (string IDs)
-	 * @todo: change the name of this method to getInstalledApps, which is more accurate
-	 */
-	public static function getAllApps() {
-
-		$apps = array();
-
-		foreach (OC::$APPSROOTS as $apps_dir) {
-			if (!is_readable($apps_dir['path'])) {
-				\OCP\Util::writeLog('core', 'unable to read app folder : ' . $apps_dir['path'], \OCP\Util::WARN);
-				continue;
-			}
-			$dh = opendir($apps_dir['path']);
-
-			if (is_resource($dh)) {
-				while (($file = readdir($dh)) !== false) {
-
-					if ($file[0] != '.' and is_dir($apps_dir['path'] . '/' . $file) and is_file($apps_dir['path'] . '/' . $file . '/appinfo/info.xml')) {
-
-						$apps[] = $file;
-					}
-				}
-			}
-		}
-
-		return $apps;
-	}
-
-	/**
-	 * List all apps, this is used in apps.php
-	 *
-	 * @return array
-	 */
-	public function listAllApps() {
-		$installedApps = OC_App::getAllApps();
-
-		//we don't want to show configuration for these
-		$blacklist = \OC::$server->getAppManager()->getAlwaysEnabledApps();
-		$appList = array();
-		$langCode = \OC::$server->getL10N('core')->getLanguageCode();
-		$urlGenerator = \OC::$server->getURLGenerator();
-
-		foreach ($installedApps as $app) {
-			if (array_search($app, $blacklist) === false) {
-
-				$info = OC_App::getAppInfo($app, false, $langCode);
-				if (!is_array($info)) {
-					\OCP\Util::writeLog('core', 'Could not read app info file for app "' . $app . '"', \OCP\Util::ERROR);
-					continue;
-				}
-
-				if (!isset($info['name'])) {
-					\OCP\Util::writeLog('core', 'App id "' . $app . '" has no name in appinfo', \OCP\Util::ERROR);
-					continue;
-				}
-
-				$enabled = \OC::$server->getAppConfig()->getValue($app, 'enabled', 'no');
-				$info['groups'] = null;
-				if ($enabled === 'yes') {
-					$active = true;
-				} else if ($enabled === 'no') {
-					$active = false;
-				} else {
-					$active = true;
-					$info['groups'] = $enabled;
-				}
-
-				$info['active'] = $active;
-
-				if (self::isShipped($app)) {
-					$info['internal'] = true;
-					$info['level'] = self::officialApp;
-					$info['removable'] = false;
-				} else {
-					$info['internal'] = false;
-					$info['removable'] = true;
-				}
-
-				$appPath = self::getAppPath($app);
-				if($appPath !== false) {
-					$appIcon = $appPath . '/img/' . $app . '.svg';
-					if (file_exists($appIcon)) {
-						$info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, $app . '.svg');
-						$info['previewAsIcon'] = true;
-					} else {
-						$appIcon = $appPath . '/img/app.svg';
-						if (file_exists($appIcon)) {
-							$info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, 'app.svg');
-							$info['previewAsIcon'] = true;
-						}
-					}
-				}
-				// fix documentation
-				if (isset($info['documentation']) && is_array($info['documentation'])) {
-					foreach ($info['documentation'] as $key => $url) {
-						// If it is not an absolute URL we assume it is a key
-						// i.e. admin-ldap will get converted to go.php?to=admin-ldap
-						if (stripos($url, 'https://') !== 0 && stripos($url, 'http://') !== 0) {
-							$url = $urlGenerator->linkToDocs($url);
-						}
-
-						$info['documentation'][$key] = $url;
-					}
-				}
-
-				$info['version'] = OC_App::getAppVersion($app);
-				$appList[] = $info;
-			}
-		}
-
-		return $appList;
-	}
-
-	/**
-	 * Returns the internal app ID or false
-	 * @param string $ocsID
-	 * @return string|false
-	 */
-	public static function getInternalAppIdByOcs($ocsID) {
-		if(is_numeric($ocsID)) {
-			$idArray = \OC::$server->getAppConfig()->getValues(false, 'ocsid');
-			if(array_search($ocsID, $idArray)) {
-				return array_search($ocsID, $idArray);
-			}
-		}
-		return false;
-	}
-
-	public static function shouldUpgrade($app) {
-		$versions = self::getAppVersions();
-		$currentVersion = OC_App::getAppVersion($app);
-		if ($currentVersion && isset($versions[$app])) {
-			$installedVersion = $versions[$app];
-			if (!version_compare($currentVersion, $installedVersion, '=')) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Adjust the number of version parts of $version1 to match
-	 * the number of version parts of $version2.
-	 *
-	 * @param string $version1 version to adjust
-	 * @param string $version2 version to take the number of parts from
-	 * @return string shortened $version1
-	 */
-	private static function adjustVersionParts($version1, $version2) {
-		$version1 = explode('.', $version1);
-		$version2 = explode('.', $version2);
-		// reduce $version1 to match the number of parts in $version2
-		while (count($version1) > count($version2)) {
-			array_pop($version1);
-		}
-		// if $version1 does not have enough parts, add some
-		while (count($version1) < count($version2)) {
-			$version1[] = '0';
-		}
-		return implode('.', $version1);
-	}
-
-	/**
-	 * Check whether the current ownCloud version matches the given
-	 * application's version requirements.
-	 *
-	 * The comparison is made based on the number of parts that the
-	 * app info version has. For example for ownCloud 6.0.3 if the
-	 * app info version is expecting version 6.0, the comparison is
-	 * made on the first two parts of the ownCloud version.
-	 * This means that it's possible to specify "requiremin" => 6
-	 * and "requiremax" => 6 and it will still match ownCloud 6.0.3.
-	 *
-	 * @param string $ocVersion ownCloud version to check against
-	 * @param array $appInfo app info (from xml)
-	 *
-	 * @return boolean true if compatible, otherwise false
-	 */
-	public static function isAppCompatible($ocVersion, $appInfo) {
-		$requireMin = '';
-		$requireMax = '';
-		if (isset($appInfo['dependencies']['nextcloud']['@attributes']['min-version'])) {
-			$requireMin = $appInfo['dependencies']['nextcloud']['@attributes']['min-version'];
-		} elseif (isset($appInfo['dependencies']['owncloud']['@attributes']['min-version'])) {
-			$requireMin = $appInfo['dependencies']['owncloud']['@attributes']['min-version'];
-		} else if (isset($appInfo['requiremin'])) {
-			$requireMin = $appInfo['requiremin'];
-		} else if (isset($appInfo['require'])) {
-			$requireMin = $appInfo['require'];
-		}
-
-		if (isset($appInfo['dependencies']['nextcloud']['@attributes']['max-version'])) {
-			$requireMax = $appInfo['dependencies']['nextcloud']['@attributes']['max-version'];
-		} elseif (isset($appInfo['dependencies']['owncloud']['@attributes']['max-version'])) {
-			$requireMax = $appInfo['dependencies']['owncloud']['@attributes']['max-version'];
-		} else if (isset($appInfo['requiremax'])) {
-			$requireMax = $appInfo['requiremax'];
-		}
-
-		if (is_array($ocVersion)) {
-			$ocVersion = implode('.', $ocVersion);
-		}
-
-		if (!empty($requireMin)
-			&& version_compare(self::adjustVersionParts($ocVersion, $requireMin), $requireMin, '<')
-		) {
-
-			return false;
-		}
-
-		if (!empty($requireMax)
-			&& version_compare(self::adjustVersionParts($ocVersion, $requireMax), $requireMax, '>')
-		) {
-			return false;
-		}
-
-		return true;
-	}
-
-	/**
-	 * get the installed version of all apps
-	 */
-	public static function getAppVersions() {
-		static $versions;
-
-		if(!$versions) {
-			$appConfig = \OC::$server->getAppConfig();
-			$versions = $appConfig->getValues(false, 'installed_version');
-		}
-		return $versions;
-	}
-
-	/**
-	 * @param string $app
-	 * @param \OCP\IConfig $config
-	 * @param \OCP\IL10N $l
-	 * @return bool
-	 *
-	 * @throws Exception if app is not compatible with this version of ownCloud
-	 * @throws Exception if no app-name was specified
-	 */
-	public function installApp($app,
-							   \OCP\IConfig $config,
-							   \OCP\IL10N $l) {
-		if ($app !== false) {
-			// check if the app is compatible with this version of ownCloud
-			$info = self::getAppInfo($app);
-			if(!is_array($info)) {
-				throw new \Exception(
-					$l->t('App "%s" cannot be installed because appinfo file cannot be read.',
-						[$info['name']]
-					)
-				);
-			}
-
-			$version = \OCP\Util::getVersion();
-			if (!self::isAppCompatible($version, $info)) {
-				throw new \Exception(
-					$l->t('App "%s" cannot be installed because it is not compatible with this version of the server.',
-						array($info['name'])
-					)
-				);
-			}
-
-			// check for required dependencies
-			self::checkAppDependencies($config, $l, $info);
-
-			$config->setAppValue($app, 'enabled', 'yes');
-			if (isset($appData['id'])) {
-				$config->setAppValue($app, 'ocsid', $appData['id']);
-			}
-
-			if(isset($info['settings']) && is_array($info['settings'])) {
-				$appPath = self::getAppPath($app);
-				self::registerAutoloading($app, $appPath);
-				\OC::$server->getSettingsManager()->setupSettings($info['settings']);
-			}
-
-			\OC_Hook::emit('OC_App', 'post_enable', array('app' => $app));
-		} else {
-			if(empty($appName) ) {
-				throw new \Exception($l->t("No app name specified"));
-			} else {
-				throw new \Exception($l->t("App '%s' could not be installed!", $appName));
-			}
-		}
-
-		return $app;
-	}
-
-	/**
-	 * update the database for the app and call the update script
-	 *
-	 * @param string $appId
-	 * @return bool
-	 */
-	public static function updateApp($appId) {
-		$appPath = self::getAppPath($appId);
-		if($appPath === false) {
-			return false;
-		}
-		$appData = self::getAppInfo($appId);
-		self::executeRepairSteps($appId, $appData['repair-steps']['pre-migration']);
-		if (file_exists($appPath . '/appinfo/database.xml')) {
-			OC_DB::updateDbFromStructure($appPath . '/appinfo/database.xml');
-		}
-		self::executeRepairSteps($appId, $appData['repair-steps']['post-migration']);
-		self::setupLiveMigrations($appId, $appData['repair-steps']['live-migration']);
-		unset(self::$appVersion[$appId]);
-		// run upgrade code
-		if (file_exists($appPath . '/appinfo/update.php')) {
-			self::loadApp($appId, false);
-			include $appPath . '/appinfo/update.php';
-		}
-		self::setupBackgroundJobs($appData['background-jobs']);
-		if(isset($appData['settings']) && is_array($appData['settings'])) {
-			$appPath = self::getAppPath($appId);
-			self::registerAutoloading($appId, $appPath);
-			\OC::$server->getSettingsManager()->setupSettings($appData['settings']);
-		}
-
-		//set remote/public handlers
-		if (array_key_exists('ocsid', $appData)) {
-			\OC::$server->getConfig()->setAppValue($appId, 'ocsid', $appData['ocsid']);
-		} elseif(\OC::$server->getConfig()->getAppValue($appId, 'ocsid', null) !== null) {
-			\OC::$server->getConfig()->deleteAppValue($appId, 'ocsid');
-		}
-		foreach ($appData['remote'] as $name => $path) {
-			\OC::$server->getConfig()->setAppValue('core', 'remote_' . $name, $appId . '/' . $path);
-		}
-		foreach ($appData['public'] as $name => $path) {
-			\OC::$server->getConfig()->setAppValue('core', 'public_' . $name, $appId . '/' . $path);
-		}
-
-		self::setAppTypes($appId);
-
-		$version = \OC_App::getAppVersion($appId);
-		\OC::$server->getAppConfig()->setValue($appId, 'installed_version', $version);
-
-		\OC::$server->getEventDispatcher()->dispatch(ManagerEvent::EVENT_APP_UPDATE, new ManagerEvent(
-			ManagerEvent::EVENT_APP_UPDATE, $appId
-		));
-
-		return true;
-	}
-
-	/**
-	 * @param string $appId
-	 * @param string[] $steps
-	 * @throws \OC\NeedsUpdateException
-	 */
-	public static function executeRepairSteps($appId, array $steps) {
-		if (empty($steps)) {
-			return;
-		}
-		// load the app
-		self::loadApp($appId, false);
-
-		$dispatcher = OC::$server->getEventDispatcher();
-
-		// load the steps
-		$r = new Repair([], $dispatcher);
-		foreach ($steps as $step) {
-			try {
-				$r->addStep($step);
-			} catch (Exception $ex) {
-				$r->emit('\OC\Repair', 'error', [$ex->getMessage()]);
-				\OC::$server->getLogger()->logException($ex);
-			}
-		}
-		// run the steps
-		$r->run();
-	}
-
-	public static function setupBackgroundJobs(array $jobs) {
-		$queue = \OC::$server->getJobList();
-		foreach ($jobs as $job) {
-			$queue->add($job);
-		}
-	}
-
-	/**
-	 * @param string $appId
-	 * @param string[] $steps
-	 */
-	private static function setupLiveMigrations($appId, array $steps) {
-		$queue = \OC::$server->getJobList();
-		foreach ($steps as $step) {
-			$queue->add('OC\Migration\BackgroundRepair', [
-				'app' => $appId,
-				'step' => $step]);
-		}
-	}
-
-	/**
-	 * @param string $appId
-	 * @return \OC\Files\View|false
-	 */
-	public static function getStorage($appId) {
-		if (OC_App::isEnabled($appId)) { //sanity check
-			if (\OC::$server->getUserSession()->isLoggedIn()) {
-				$view = new \OC\Files\View('/' . OC_User::getUser());
-				if (!$view->file_exists($appId)) {
-					$view->mkdir($appId);
-				}
-				return new \OC\Files\View('/' . OC_User::getUser() . '/' . $appId);
-			} else {
-				\OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ', user not logged in', \OCP\Util::ERROR);
-				return false;
-			}
-		} else {
-			\OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ' not enabled', \OCP\Util::ERROR);
-			return false;
-		}
-	}
-
-	protected static function findBestL10NOption($options, $lang) {
-		$fallback = $similarLangFallback = $englishFallback = false;
-
-		$lang = strtolower($lang);
-		$similarLang = $lang;
-		if (strpos($similarLang, '_')) {
-			// For "de_DE" we want to find "de" and the other way around
-			$similarLang = substr($lang, 0, strpos($lang, '_'));
-		}
-
-		foreach ($options as $option) {
-			if (is_array($option)) {
-				if ($fallback === false) {
-					$fallback = $option['@value'];
-				}
-
-				if (!isset($option['@attributes']['lang'])) {
-					continue;
-				}
-
-				$attributeLang = strtolower($option['@attributes']['lang']);
-				if ($attributeLang === $lang) {
-					return $option['@value'];
-				}
-
-				if ($attributeLang === $similarLang) {
-					$similarLangFallback = $option['@value'];
-				} else if (strpos($attributeLang, $similarLang . '_') === 0) {
-					if ($similarLangFallback === false) {
-						$similarLangFallback =  $option['@value'];
-					}
-				}
-			} else {
-				$englishFallback = $option;
-			}
-		}
-
-		if ($similarLangFallback !== false) {
-			return $similarLangFallback;
-		} else if ($englishFallback !== false) {
-			return $englishFallback;
-		}
-		return (string) $fallback;
-	}
-
-	/**
-	 * parses the app data array and enhanced the 'description' value
-	 *
-	 * @param array $data the app data
-	 * @param string $lang
-	 * @return array improved app data
-	 */
-	public static function parseAppInfo(array $data, $lang = null) {
-
-		if ($lang && isset($data['name']) && is_array($data['name'])) {
-			$data['name'] = self::findBestL10NOption($data['name'], $lang);
-		}
-		if ($lang && isset($data['summary']) && is_array($data['summary'])) {
-			$data['summary'] = self::findBestL10NOption($data['summary'], $lang);
-		}
-		if ($lang && isset($data['description']) && is_array($data['description'])) {
-			$data['description'] = trim(self::findBestL10NOption($data['description'], $lang));
-		} else if (isset($data['description']) && is_string($data['description'])) {
-			$data['description'] = trim($data['description']);
-		} else  {
-			$data['description'] = '';
-		}
-
-		return $data;
-	}
-
-	/**
-	 * @param \OCP\IConfig $config
-	 * @param \OCP\IL10N $l
-	 * @param array $info
-	 * @throws \Exception
-	 */
-	protected static function checkAppDependencies($config, $l, $info) {
-		$dependencyAnalyzer = new DependencyAnalyzer(new Platform($config), $l);
-		$missing = $dependencyAnalyzer->analyze($info);
-		if (!empty($missing)) {
-			$missingMsg = join(PHP_EOL, $missing);
-			throw new \Exception(
-				$l->t('App "%s" cannot be installed because the following dependencies are not fulfilled: %s',
-					[$info['name'], $missingMsg]
-				)
-			);
-		}
-	}
+    static private $appVersion = [];
+    static private $adminForms = array();
+    static private $personalForms = array();
+    static private $appInfo = array();
+    static private $appTypes = array();
+    static private $loadedApps = array();
+    static private $altLogin = array();
+    static private $alreadyRegistered = [];
+    const officialApp = 200;
+
+    /**
+     * clean the appId
+     *
+     * @param string|boolean $app AppId that needs to be cleaned
+     * @return string
+     */
+    public static function cleanAppId($app) {
+        return str_replace(array('\0', '/', '\\', '..'), '', $app);
+    }
+
+    /**
+     * Check if an app is loaded
+     *
+     * @param string $app
+     * @return bool
+     */
+    public static function isAppLoaded($app) {
+        return in_array($app, self::$loadedApps, true);
+    }
+
+    /**
+     * loads all apps
+     *
+     * @param string[] | string | null $types
+     * @return bool
+     *
+     * This function walks through the ownCloud directory and loads all apps
+     * it can find. A directory contains an app if the file /appinfo/info.xml
+     * exists.
+     *
+     * if $types is set, only apps of those types will be loaded
+     */
+    public static function loadApps($types = null) {
+        if (\OC::$server->getSystemConfig()->getValue('maintenance', false)) {
+            return false;
+        }
+        // Load the enabled apps here
+        $apps = self::getEnabledApps();
+
+        // Add each apps' folder as allowed class path
+        foreach($apps as $app) {
+            $path = self::getAppPath($app);
+            if($path !== false) {
+                self::registerAutoloading($app, $path);
+            }
+        }
+
+        // prevent app.php from printing output
+        ob_start();
+        foreach ($apps as $app) {
+            if ((is_null($types) or self::isType($app, $types)) && !in_array($app, self::$loadedApps)) {
+                self::loadApp($app);
+            }
+        }
+        ob_end_clean();
+
+        return true;
+    }
+
+    /**
+     * load a single app
+     *
+     * @param string $app
+     * @param bool $checkUpgrade whether an upgrade check should be done
+     * @throws \OC\NeedsUpdateException
+     */
+    public static function loadApp($app, $checkUpgrade = true) {
+        self::$loadedApps[] = $app;
+        $appPath = self::getAppPath($app);
+        if($appPath === false) {
+            return;
+        }
+
+        // in case someone calls loadApp() directly
+        self::registerAutoloading($app, $appPath);
+
+        if (is_file($appPath . '/appinfo/app.php')) {
+            \OC::$server->getEventLogger()->start('load_app_' . $app, 'Load app: ' . $app);
+            if ($checkUpgrade and self::shouldUpgrade($app)) {
+                throw new \OC\NeedsUpdateException();
+            }
+            self::requireAppFile($app);
+            if (self::isType($app, array('authentication'))) {
+                // since authentication apps affect the "is app enabled for group" check,
+                // the enabled apps cache needs to be cleared to make sure that the
+                // next time getEnableApps() is called it will also include apps that were
+                // enabled for groups
+                self::$enabledAppsCache = array();
+            }
+            \OC::$server->getEventLogger()->end('load_app_' . $app);
+        }
+
+        $info = self::getAppInfo($app);
+        if (!empty($info['activity']['filters'])) {
+            foreach ($info['activity']['filters'] as $filter) {
+                \OC::$server->getActivityManager()->registerFilter($filter);
+            }
+        }
+        if (!empty($info['activity']['settings'])) {
+            foreach ($info['activity']['settings'] as $setting) {
+                \OC::$server->getActivityManager()->registerSetting($setting);
+            }
+        }
+        if (!empty($info['activity']['providers'])) {
+            foreach ($info['activity']['providers'] as $provider) {
+                \OC::$server->getActivityManager()->registerProvider($provider);
+            }
+        }
+    }
+
+    /**
+     * @internal
+     * @param string $app
+     * @param string $path
+     */
+    public static function registerAutoloading($app, $path) {
+        $key = $app . '-' . $path;
+        if(isset(self::$alreadyRegistered[$key])) {
+            return;
+        }
+        self::$alreadyRegistered[$key] = true;
+        // Register on PSR-4 composer autoloader
+        $appNamespace = \OC\AppFramework\App::buildAppNamespace($app);
+        \OC::$composerAutoloader->addPsr4($appNamespace . '\\', $path . '/lib/', true);
+        if (defined('PHPUNIT_RUN') || defined('CLI_TEST_RUN')) {
+            \OC::$composerAutoloader->addPsr4($appNamespace . '\\Tests\\', $path . '/tests/', true);
+        }
+
+        // Register on legacy autoloader
+        \OC::$loader->addValidRoot($path);
+    }
+
+    /**
+     * Load app.php from the given app
+     *
+     * @param string $app app name
+     */
+    private static function requireAppFile($app) {
+        try {
+            // encapsulated here to avoid variable scope conflicts
+            require_once $app . '/appinfo/app.php';
+        } catch (Error $ex) {
+            \OC::$server->getLogger()->logException($ex);
+            $blacklist = \OC::$server->getAppManager()->getAlwaysEnabledApps();
+            if (!in_array($app, $blacklist)) {
+                self::disable($app);
+            }
+        }
+    }
+
+    /**
+     * check if an app is of a specific type
+     *
+     * @param string $app
+     * @param string|array $types
+     * @return bool
+     */
+    public static function isType($app, $types) {
+        if (is_string($types)) {
+            $types = array($types);
+        }
+        $appTypes = self::getAppTypes($app);
+        foreach ($types as $type) {
+            if (array_search($type, $appTypes) !== false) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * get the types of an app
+     *
+     * @param string $app
+     * @return array
+     */
+    private static function getAppTypes($app) {
+        //load the cache
+        if (count(self::$appTypes) == 0) {
+            self::$appTypes = \OC::$server->getAppConfig()->getValues(false, 'types');
+        }
+
+        if (isset(self::$appTypes[$app])) {
+            return explode(',', self::$appTypes[$app]);
+        } else {
+            return array();
+        }
+    }
+
+    /**
+     * read app types from info.xml and cache them in the database
+     */
+    public static function setAppTypes($app) {
+        $appData = self::getAppInfo($app);
+        if(!is_array($appData)) {
+            return;
+        }
+
+        if (isset($appData['types'])) {
+            $appTypes = implode(',', $appData['types']);
+        } else {
+            $appTypes = '';
+            $appData['types'] = [];
+        }
+
+        \OC::$server->getAppConfig()->setValue($app, 'types', $appTypes);
+
+        if (\OC::$server->getAppManager()->hasProtectedAppType($appData['types'])) {
+            $enabled = \OC::$server->getAppConfig()->getValue($app, 'enabled', 'yes');
+            if ($enabled !== 'yes' && $enabled !== 'no') {
+                \OC::$server->getAppConfig()->setValue($app, 'enabled', 'yes');
+            }
+        }
+    }
+
+    /**
+     * check if app is shipped
+     *
+     * @param string $appId the id of the app to check
+     * @return bool
+     *
+     * Check if an app that is installed is a shipped app or installed from the appstore.
+     */
+    public static function isShipped($appId) {
+        return \OC::$server->getAppManager()->isShipped($appId);
+    }
+
+    /**
+     * get all enabled apps
+     */
+    protected static $enabledAppsCache = array();
+
+    /**
+     * Returns apps enabled for the current user.
+     *
+     * @param bool $forceRefresh whether to refresh the cache
+     * @param bool $all whether to return apps for all users, not only the
+     * currently logged in one
+     * @return string[]
+     */
+    public static function getEnabledApps($forceRefresh = false, $all = false) {
+        if (!\OC::$server->getSystemConfig()->getValue('installed', false)) {
+            return array();
+        }
+        // in incognito mode or when logged out, $user will be false,
+        // which is also the case during an upgrade
+        $appManager = \OC::$server->getAppManager();
+        if ($all) {
+            $user = null;
+        } else {
+            $user = \OC::$server->getUserSession()->getUser();
+        }
+
+        if (is_null($user)) {
+            $apps = $appManager->getInstalledApps();
+        } else {
+            $apps = $appManager->getEnabledAppsForUser($user);
+        }
+        $apps = array_filter($apps, function ($app) {
+            return $app !== 'files';//we add this manually
+        });
+        sort($apps);
+        array_unshift($apps, 'files');
+        return $apps;
+    }
+
+    /**
+     * checks whether or not an app is enabled
+     *
+     * @param string $app app
+     * @return bool
+     *
+     * This function checks whether or not an app is enabled.
+     */
+    public static function isEnabled($app) {
+        return \OC::$server->getAppManager()->isEnabledForUser($app);
+    }
+
+    /**
+     * enables an app
+     *
+     * @param string $appId
+     * @param array $groups (optional) when set, only these groups will have access to the app
+     * @throws \Exception
+     * @return void
+     *
+     * This function set an app as enabled in appconfig.
+     */
+    public function enable($appId,
+                            $groups = null) {
+        self::$enabledAppsCache = []; // flush
+        $l = \OC::$server->getL10N('core');
+        $config = \OC::$server->getConfig();
+
+        // Check if app is already downloaded
+        $installer = new Installer(
+            \OC::$server->getAppFetcher(),
+            \OC::$server->getHTTPClientService(),
+            \OC::$server->getTempManager(),
+            \OC::$server->getLogger()
+        );
+        $isDownloaded = $installer->isDownloaded($appId);
+
+        if(!$isDownloaded) {
+            $installer->downloadApp($appId);
+        }
+
+        if (!Installer::isInstalled($appId)) {
+            $appId = self::installApp(
+                $appId,
+                $config,
+                $l
+            );
+            $appPath = self::getAppPath($appId);
+            self::registerAutoloading($appId, $appPath);
+            $installer->installApp($appId);
+        } else {
+            // check for required dependencies
+            $info = self::getAppInfo($appId);
+            self::checkAppDependencies($config, $l, $info);
+            $appPath = self::getAppPath($appId);
+            self::registerAutoloading($appId, $appPath);
+            $installer->installApp($appId);
+        }
+
+        $appManager = \OC::$server->getAppManager();
+        if (!is_null($groups)) {
+            $groupManager = \OC::$server->getGroupManager();
+            $groupsList = [];
+            foreach ($groups as $group) {
+                $groupItem = $groupManager->get($group);
+                if ($groupItem instanceof \OCP\IGroup) {
+                    $groupsList[] = $groupManager->get($group);
+                }
+            }
+            $appManager->enableAppForGroups($appId, $groupsList);
+        } else {
+            $appManager->enableApp($appId);
+        }
+
+        $info = self::getAppInfo($appId);
+        if(isset($info['settings']) && is_array($info['settings'])) {
+            $appPath = self::getAppPath($appId);
+            self::registerAutoloading($appId, $appPath);
+            \OC::$server->getSettingsManager()->setupSettings($info['settings']);
+        }
+    }
+
+    /**
+     * @param string $app
+     * @return bool
+     */
+    public static function removeApp($app) {
+        if (self::isShipped($app)) {
+            return false;
+        }
+
+        $installer = new Installer(
+            \OC::$server->getAppFetcher(),
+            \OC::$server->getHTTPClientService(),
+            \OC::$server->getTempManager(),
+            \OC::$server->getLogger()
+        );
+        return $installer->removeApp($app);
+    }
+
+    /**
+     * This function set an app as disabled in appconfig.
+     *
+     * @param string $app app
+     * @throws Exception
+     */
+    public static function disable($app) {
+        // flush
+        self::$enabledAppsCache = array();
+
+        // run uninstall steps
+        $appData = OC_App::getAppInfo($app);
+        if (!is_null($appData)) {
+            OC_App::executeRepairSteps($app, $appData['repair-steps']['uninstall']);
+        }
+
+        // emit disable hook - needed anymore ?
+        \OC_Hook::emit('OC_App', 'pre_disable', array('app' => $app));
+
+        // finally disable it
+        $appManager = \OC::$server->getAppManager();
+        $appManager->disableApp($app);
+    }
+
+    /**
+     * Returns the Settings Navigation
+     *
+     * @return string[]
+     *
+     * This function returns an array containing all settings pages added. The
+     * entries are sorted by the key 'order' ascending.
+     */
+    public static function getSettingsNavigation() {
+        $l = \OC::$server->getL10N('lib');
+        $urlGenerator = \OC::$server->getURLGenerator();
+
+        $settings = array();
+        // by default, settings only contain the help menu
+        if (\OC::$server->getSystemConfig()->getValue('knowledgebaseenabled', true)) {
+            $settings = array(
+                array(
+                    "id" => "help",
+                    "order" => 4,
+                    "href" => $urlGenerator->linkToRoute('settings_help'),
+                    "name" => $l->t("Help"),
+                    "icon" => $urlGenerator->imagePath("settings", "help.svg")
+                )
+            );
+        }
+
+        // if the user is logged-in
+        if (\OC::$server->getUserSession()->isLoggedIn()) {
+            // personal menu
+            $settings[] = array(
+                "id" => "personal",
+                "order" => 1,
+                "href" => $urlGenerator->linkToRoute('settings_personal'),
+                "name" => $l->t("Personal"),
+                "icon" => $urlGenerator->imagePath("settings", "personal.svg")
+            );
+
+            //SubAdmins are also allowed to access user management
+            $userObject = \OC::$server->getUserSession()->getUser();
+            $isSubAdmin = false;
+            if($userObject !== null) {
+                $isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
+            }
+            if ($isSubAdmin) {
+                // admin users menu
+                $settings[] = array(
+                    "id" => "core_users",
+                    "order" => 3,
+                    "href" => $urlGenerator->linkToRoute('settings_users'),
+                    "name" => $l->t("Users"),
+                    "icon" => $urlGenerator->imagePath("settings", "users.svg")
+                );
+            }
+
+            // if the user is an admin
+            if (OC_User::isAdminUser(OC_User::getUser())) {
+                // admin settings
+                $settings[] = array(
+                    "id" => "admin",
+                    "order" => 2,
+                    "href" => $urlGenerator->linkToRoute('settings.AdminSettings.index'),
+                    "name" => $l->t("Admin"),
+                    "icon" => $urlGenerator->imagePath("settings", "admin.svg")
+                );
+            }
+        }
+
+        $navigation = self::proceedNavigation($settings);
+        return $navigation;
+    }
+
+    // This is private as well. It simply works, so don't ask for more details
+    private static function proceedNavigation($list) {
+        $headerIconCount = 8;
+        if(OC_User::isAdminUser(OC_User::getUser())) {
+            $headerIconCount--;
+        }
+        usort($list, function($a, $b) {
+            if (isset($a['order']) && isset($b['order'])) {
+                return ($a['order'] < $b['order']) ? -1 : 1;
+            } else if (isset($a['order']) || isset($b['order'])) {
+                return isset($a['order']) ? -1 : 1;
+            } else {
+                return ($a['name'] < $b['name']) ? -1 : 1;
+            }
+        });
+
+        $activeAppIndex = -1;
+        $activeApp = OC::$server->getNavigationManager()->getActiveEntry();
+        foreach ($list as $index => &$navEntry) {
+            if ($navEntry['id'] == $activeApp) {
+                $navEntry['active'] = true;
+                $activeAppIndex = $index;
+            } else {
+                $navEntry['active'] = false;
+            }
+        }
+        unset($navEntry);
+
+        if($activeAppIndex > ($headerIconCount-1)) {
+            $active = $list[$activeAppIndex];
+            $lastInHeader = $list[$headerIconCount-1];
+            $list[$headerIconCount-1] = $active;
+            $list[$activeAppIndex] = $lastInHeader;
+        }
+
+        foreach ($list as $index => &$navEntry) {
+            $navEntry['showInHeader'] = false;
+            if($index < $headerIconCount) {
+                $navEntry['showInHeader'] = true;
+            }
+        }
+
+
+
+        return $list;
+    }
+
+    public static function proceedAppNavigation($entries) {
+        $headerIconCount = 8;
+        if(OC_User::isAdminUser(OC_User::getUser())) {
+            $headerIconCount--;
+        }
+        $activeAppIndex = -1;
+        $list = self::proceedNavigation($entries);
+
+        $activeApp = OC::$server->getNavigationManager()->getActiveEntry();
+        foreach ($list as $index => &$navEntry) {
+            if ($navEntry['id'] == $activeApp) {
+                $navEntry['active'] = true;
+                $activeAppIndex = $index;
+            } else {
+                $navEntry['active'] = false;
+            }
+        }
+        // move active item to last position
+        if($activeAppIndex > ($headerIconCount-1)) {
+            $active = $list[$activeAppIndex];
+            $lastInHeader = $list[$headerIconCount-1];
+            $list[$headerIconCount-1] = $active;
+            $list[$activeAppIndex] = $lastInHeader;
+        }
+        $list = array_slice($list, 0, $headerIconCount);
+
+        return $list;
+    }
+
+    /**
+     * Get the path where to install apps
+     *
+     * @return string|false
+     */
+    public static function getInstallPath() {
+        if (\OC::$server->getSystemConfig()->getValue('appstoreenabled', true) == false) {
+            return false;
+        }
+
+        foreach (OC::$APPSROOTS as $dir) {
+            if (isset($dir['writable']) && $dir['writable'] === true) {
+                return $dir['path'];
+            }
+        }
+
+        \OCP\Util::writeLog('core', 'No application directories are marked as writable.', \OCP\Util::ERROR);
+        return null;
+    }
+
+
+    /**
+     * search for an app in all app-directories
+     *
+     * @param string $appId
+     * @return false|string
+     */
+    public static function findAppInDirectories($appId) {
+        $sanitizedAppId = self::cleanAppId($appId);
+        if($sanitizedAppId !== $appId) {
+            return false;
+        }
+        static $app_dir = array();
+
+        if (isset($app_dir[$appId])) {
+            return $app_dir[$appId];
+        }
+
+        $possibleApps = array();
+        foreach (OC::$APPSROOTS as $dir) {
+            if (file_exists($dir['path'] . '/' . $appId)) {
+                $possibleApps[] = $dir;
+            }
+        }
+
+        if (empty($possibleApps)) {
+            return false;
+        } elseif (count($possibleApps) === 1) {
+            $dir = array_shift($possibleApps);
+            $app_dir[$appId] = $dir;
+            return $dir;
+        } else {
+            $versionToLoad = array();
+            foreach ($possibleApps as $possibleApp) {
+                $version = self::getAppVersionByPath($possibleApp['path']);
+                if (empty($versionToLoad) || version_compare($version, $versionToLoad['version'], '>')) {
+                    $versionToLoad = array(
+                        'dir' => $possibleApp,
+                        'version' => $version,
+                    );
+                }
+            }
+            $app_dir[$appId] = $versionToLoad['dir'];
+            return $versionToLoad['dir'];
+            //TODO - write test
+        }
+    }
+
+    /**
+     * Get the directory for the given app.
+     * If the app is defined in multiple directories, the first one is taken. (false if not found)
+     *
+     * @param string $appId
+     * @return string|false
+     */
+    public static function getAppPath($appId) {
+        if ($appId === null || trim($appId) === '') {
+            return false;
+        }
+
+        if (($dir = self::findAppInDirectories($appId)) != false) {
+            return $dir['path'] . '/' . $appId;
+        }
+        return false;
+    }
+
+    /**
+     * Get the path for the given app on the access
+     * If the app is defined in multiple directories, the first one is taken. (false if not found)
+     *
+     * @param string $appId
+     * @return string|false
+     */
+    public static function getAppWebPath($appId) {
+        if (($dir = self::findAppInDirectories($appId)) != false) {
+            return OC::$WEBROOT . $dir['url'] . '/' . $appId;
+        }
+        return false;
+    }
+
+    /**
+     * get the last version of the app from appinfo/info.xml
+     *
+     * @param string $appId
+     * @param bool $useCache
+     * @return string
+     */
+    public static function getAppVersion($appId, $useCache = true) {
+        if($useCache && isset(self::$appVersion[$appId])) {
+            return self::$appVersion[$appId];
+        }
+
+        $file = self::getAppPath($appId);
+        self::$appVersion[$appId] = ($file !== false) ? self::getAppVersionByPath($file) : '0';
+        return self::$appVersion[$appId];
+    }
+
+    /**
+     * get app's version based on it's path
+     *
+     * @param string $path
+     * @return string
+     */
+    public static function getAppVersionByPath($path) {
+        $infoFile = $path . '/appinfo/info.xml';
+        $appData = self::getAppInfo($infoFile, true);
+        return isset($appData['version']) ? $appData['version'] : '';
+    }
+
+
+    /**
+     * Read all app metadata from the info.xml file
+     *
+     * @param string $appId id of the app or the path of the info.xml file
+     * @param bool $path
+     * @param string $lang
+     * @return array|null
+     * @note all data is read from info.xml, not just pre-defined fields
+     */
+    public static function getAppInfo($appId, $path = false, $lang = null) {
+        if ($path) {
+            $file = $appId;
+        } else {
+            if ($lang === null && isset(self::$appInfo[$appId])) {
+                return self::$appInfo[$appId];
+            }
+            $appPath = self::getAppPath($appId);
+            if($appPath === false) {
+                return null;
+            }
+            $file = $appPath . '/appinfo/info.xml';
+        }
+
+        $parser = new InfoParser(\OC::$server->getMemCacheFactory()->create('core.appinfo'));
+        $data = $parser->parse($file);
+
+        if (is_array($data)) {
+            $data = OC_App::parseAppInfo($data, $lang);
+        }
+        if(isset($data['ocsid'])) {
+            $storedId = \OC::$server->getConfig()->getAppValue($appId, 'ocsid');
+            if($storedId !== '' && $storedId !== $data['ocsid']) {
+                $data['ocsid'] = $storedId;
+            }
+        }
+
+        if ($lang === null) {
+            self::$appInfo[$appId] = $data;
+        }
+
+        return $data;
+    }
+
+    /**
+     * Returns the navigation
+     *
+     * @return array
+     *
+     * This function returns an array containing all entries added. The
+     * entries are sorted by the key 'order' ascending. Additional to the keys
+     * given for each app the following keys exist:
+     *   - active: boolean, signals if the user is on this navigation entry
+     */
+    public static function getNavigation() {
+        $entries = OC::$server->getNavigationManager()->getAll();
+        $navigation = self::proceedNavigation($entries);
+        return $navigation;
+    }
+
+    /**
+     * Returns the navigation inside the header bar
+     *
+     * @return array
+     *
+     * This function returns an array containing all entries added. The
+     * entries are sorted by the key 'order' ascending. Additional to the keys
+     * given for each app the following keys exist:
+     *   - active: boolean, signals if the user is on this navigation entry
+     */
+    public static function getHeaderNavigation() {
+        $entries = OC::$server->getNavigationManager()->getAll();
+        $navigation = self::proceedAppNavigation($entries);
+        return $navigation;
+    }
+
+    /**
+     * get the id of loaded app
+     *
+     * @return string
+     */
+    public static function getCurrentApp() {
+        $request = \OC::$server->getRequest();
+        $script = substr($request->getScriptName(), strlen(OC::$WEBROOT) + 1);
+        $topFolder = substr($script, 0, strpos($script, '/'));
+        if (empty($topFolder)) {
+            $path_info = $request->getPathInfo();
+            if ($path_info) {
+                $topFolder = substr($path_info, 1, strpos($path_info, '/', 1) - 1);
+            }
+        }
+        if ($topFolder == 'apps') {
+            $length = strlen($topFolder);
+            return substr($script, $length + 1, strpos($script, '/', $length + 1) - $length - 1);
+        } else {
+            return $topFolder;
+        }
+    }
+
+    /**
+     * @param string $type
+     * @return array
+     */
+    public static function getForms($type) {
+        $forms = array();
+        switch ($type) {
+            case 'admin':
+                $source = self::$adminForms;
+                break;
+            case 'personal':
+                $source = self::$personalForms;
+                break;
+            default:
+                return array();
+        }
+        foreach ($source as $form) {
+            $forms[] = include $form;
+        }
+        return $forms;
+    }
+
+    /**
+     * register an admin form to be shown
+     *
+     * @param string $app
+     * @param string $page
+     */
+    public static function registerAdmin($app, $page) {
+        self::$adminForms[] = $app . '/' . $page . '.php';
+    }
+
+    /**
+     * register a personal form to be shown
+     * @param string $app
+     * @param string $page
+     */
+    public static function registerPersonal($app, $page) {
+        self::$personalForms[] = $app . '/' . $page . '.php';
+    }
+
+    /**
+     * @param array $entry
+     */
+    public static function registerLogIn(array $entry) {
+        self::$altLogin[] = $entry;
+    }
+
+    /**
+     * @return array
+     */
+    public static function getAlternativeLogIns() {
+        return self::$altLogin;
+    }
+
+    /**
+     * get a list of all apps in the apps folder
+     *
+     * @return array an array of app names (string IDs)
+     * @todo: change the name of this method to getInstalledApps, which is more accurate
+     */
+    public static function getAllApps() {
+
+        $apps = array();
+
+        foreach (OC::$APPSROOTS as $apps_dir) {
+            if (!is_readable($apps_dir['path'])) {
+                \OCP\Util::writeLog('core', 'unable to read app folder : ' . $apps_dir['path'], \OCP\Util::WARN);
+                continue;
+            }
+            $dh = opendir($apps_dir['path']);
+
+            if (is_resource($dh)) {
+                while (($file = readdir($dh)) !== false) {
+
+                    if ($file[0] != '.' and is_dir($apps_dir['path'] . '/' . $file) and is_file($apps_dir['path'] . '/' . $file . '/appinfo/info.xml')) {
+
+                        $apps[] = $file;
+                    }
+                }
+            }
+        }
+
+        return $apps;
+    }
+
+    /**
+     * List all apps, this is used in apps.php
+     *
+     * @return array
+     */
+    public function listAllApps() {
+        $installedApps = OC_App::getAllApps();
+
+        //we don't want to show configuration for these
+        $blacklist = \OC::$server->getAppManager()->getAlwaysEnabledApps();
+        $appList = array();
+        $langCode = \OC::$server->getL10N('core')->getLanguageCode();
+        $urlGenerator = \OC::$server->getURLGenerator();
+
+        foreach ($installedApps as $app) {
+            if (array_search($app, $blacklist) === false) {
+
+                $info = OC_App::getAppInfo($app, false, $langCode);
+                if (!is_array($info)) {
+                    \OCP\Util::writeLog('core', 'Could not read app info file for app "' . $app . '"', \OCP\Util::ERROR);
+                    continue;
+                }
+
+                if (!isset($info['name'])) {
+                    \OCP\Util::writeLog('core', 'App id "' . $app . '" has no name in appinfo', \OCP\Util::ERROR);
+                    continue;
+                }
+
+                $enabled = \OC::$server->getAppConfig()->getValue($app, 'enabled', 'no');
+                $info['groups'] = null;
+                if ($enabled === 'yes') {
+                    $active = true;
+                } else if ($enabled === 'no') {
+                    $active = false;
+                } else {
+                    $active = true;
+                    $info['groups'] = $enabled;
+                }
+
+                $info['active'] = $active;
+
+                if (self::isShipped($app)) {
+                    $info['internal'] = true;
+                    $info['level'] = self::officialApp;
+                    $info['removable'] = false;
+                } else {
+                    $info['internal'] = false;
+                    $info['removable'] = true;
+                }
+
+                $appPath = self::getAppPath($app);
+                if($appPath !== false) {
+                    $appIcon = $appPath . '/img/' . $app . '.svg';
+                    if (file_exists($appIcon)) {
+                        $info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, $app . '.svg');
+                        $info['previewAsIcon'] = true;
+                    } else {
+                        $appIcon = $appPath . '/img/app.svg';
+                        if (file_exists($appIcon)) {
+                            $info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, 'app.svg');
+                            $info['previewAsIcon'] = true;
+                        }
+                    }
+                }
+                // fix documentation
+                if (isset($info['documentation']) && is_array($info['documentation'])) {
+                    foreach ($info['documentation'] as $key => $url) {
+                        // If it is not an absolute URL we assume it is a key
+                        // i.e. admin-ldap will get converted to go.php?to=admin-ldap
+                        if (stripos($url, 'https://') !== 0 && stripos($url, 'http://') !== 0) {
+                            $url = $urlGenerator->linkToDocs($url);
+                        }
+
+                        $info['documentation'][$key] = $url;
+                    }
+                }
+
+                $info['version'] = OC_App::getAppVersion($app);
+                $appList[] = $info;
+            }
+        }
+
+        return $appList;
+    }
+
+    /**
+     * Returns the internal app ID or false
+     * @param string $ocsID
+     * @return string|false
+     */
+    public static function getInternalAppIdByOcs($ocsID) {
+        if(is_numeric($ocsID)) {
+            $idArray = \OC::$server->getAppConfig()->getValues(false, 'ocsid');
+            if(array_search($ocsID, $idArray)) {
+                return array_search($ocsID, $idArray);
+            }
+        }
+        return false;
+    }
+
+    public static function shouldUpgrade($app) {
+        $versions = self::getAppVersions();
+        $currentVersion = OC_App::getAppVersion($app);
+        if ($currentVersion && isset($versions[$app])) {
+            $installedVersion = $versions[$app];
+            if (!version_compare($currentVersion, $installedVersion, '=')) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Adjust the number of version parts of $version1 to match
+     * the number of version parts of $version2.
+     *
+     * @param string $version1 version to adjust
+     * @param string $version2 version to take the number of parts from
+     * @return string shortened $version1
+     */
+    private static function adjustVersionParts($version1, $version2) {
+        $version1 = explode('.', $version1);
+        $version2 = explode('.', $version2);
+        // reduce $version1 to match the number of parts in $version2
+        while (count($version1) > count($version2)) {
+            array_pop($version1);
+        }
+        // if $version1 does not have enough parts, add some
+        while (count($version1) < count($version2)) {
+            $version1[] = '0';
+        }
+        return implode('.', $version1);
+    }
+
+    /**
+     * Check whether the current ownCloud version matches the given
+     * application's version requirements.
+     *
+     * The comparison is made based on the number of parts that the
+     * app info version has. For example for ownCloud 6.0.3 if the
+     * app info version is expecting version 6.0, the comparison is
+     * made on the first two parts of the ownCloud version.
+     * This means that it's possible to specify "requiremin" => 6
+     * and "requiremax" => 6 and it will still match ownCloud 6.0.3.
+     *
+     * @param string $ocVersion ownCloud version to check against
+     * @param array $appInfo app info (from xml)
+     *
+     * @return boolean true if compatible, otherwise false
+     */
+    public static function isAppCompatible($ocVersion, $appInfo) {
+        $requireMin = '';
+        $requireMax = '';
+        if (isset($appInfo['dependencies']['nextcloud']['@attributes']['min-version'])) {
+            $requireMin = $appInfo['dependencies']['nextcloud']['@attributes']['min-version'];
+        } elseif (isset($appInfo['dependencies']['owncloud']['@attributes']['min-version'])) {
+            $requireMin = $appInfo['dependencies']['owncloud']['@attributes']['min-version'];
+        } else if (isset($appInfo['requiremin'])) {
+            $requireMin = $appInfo['requiremin'];
+        } else if (isset($appInfo['require'])) {
+            $requireMin = $appInfo['require'];
+        }
+
+        if (isset($appInfo['dependencies']['nextcloud']['@attributes']['max-version'])) {
+            $requireMax = $appInfo['dependencies']['nextcloud']['@attributes']['max-version'];
+        } elseif (isset($appInfo['dependencies']['owncloud']['@attributes']['max-version'])) {
+            $requireMax = $appInfo['dependencies']['owncloud']['@attributes']['max-version'];
+        } else if (isset($appInfo['requiremax'])) {
+            $requireMax = $appInfo['requiremax'];
+        }
+
+        if (is_array($ocVersion)) {
+            $ocVersion = implode('.', $ocVersion);
+        }
+
+        if (!empty($requireMin)
+            && version_compare(self::adjustVersionParts($ocVersion, $requireMin), $requireMin, '<')
+        ) {
+
+            return false;
+        }
+
+        if (!empty($requireMax)
+            && version_compare(self::adjustVersionParts($ocVersion, $requireMax), $requireMax, '>')
+        ) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * get the installed version of all apps
+     */
+    public static function getAppVersions() {
+        static $versions;
+
+        if(!$versions) {
+            $appConfig = \OC::$server->getAppConfig();
+            $versions = $appConfig->getValues(false, 'installed_version');
+        }
+        return $versions;
+    }
+
+    /**
+     * @param string $app
+     * @param \OCP\IConfig $config
+     * @param \OCP\IL10N $l
+     * @return bool
+     *
+     * @throws Exception if app is not compatible with this version of ownCloud
+     * @throws Exception if no app-name was specified
+     */
+    public function installApp($app,
+                                \OCP\IConfig $config,
+                                \OCP\IL10N $l) {
+        if ($app !== false) {
+            // check if the app is compatible with this version of ownCloud
+            $info = self::getAppInfo($app);
+            if(!is_array($info)) {
+                throw new \Exception(
+                    $l->t('App "%s" cannot be installed because appinfo file cannot be read.',
+                        [$info['name']]
+                    )
+                );
+            }
+
+            $version = \OCP\Util::getVersion();
+            if (!self::isAppCompatible($version, $info)) {
+                throw new \Exception(
+                    $l->t('App "%s" cannot be installed because it is not compatible with this version of the server.',
+                        array($info['name'])
+                    )
+                );
+            }
+
+            // check for required dependencies
+            self::checkAppDependencies($config, $l, $info);
+
+            $config->setAppValue($app, 'enabled', 'yes');
+            if (isset($appData['id'])) {
+                $config->setAppValue($app, 'ocsid', $appData['id']);
+            }
+
+            if(isset($info['settings']) && is_array($info['settings'])) {
+                $appPath = self::getAppPath($app);
+                self::registerAutoloading($app, $appPath);
+                \OC::$server->getSettingsManager()->setupSettings($info['settings']);
+            }
+
+            \OC_Hook::emit('OC_App', 'post_enable', array('app' => $app));
+        } else {
+            if(empty($appName) ) {
+                throw new \Exception($l->t("No app name specified"));
+            } else {
+                throw new \Exception($l->t("App '%s' could not be installed!", $appName));
+            }
+        }
+
+        return $app;
+    }
+
+    /**
+     * update the database for the app and call the update script
+     *
+     * @param string $appId
+     * @return bool
+     */
+    public static function updateApp($appId) {
+        $appPath = self::getAppPath($appId);
+        if($appPath === false) {
+            return false;
+        }
+        $appData = self::getAppInfo($appId);
+        self::executeRepairSteps($appId, $appData['repair-steps']['pre-migration']);
+        if (file_exists($appPath . '/appinfo/database.xml')) {
+            OC_DB::updateDbFromStructure($appPath . '/appinfo/database.xml');
+        }
+        self::executeRepairSteps($appId, $appData['repair-steps']['post-migration']);
+        self::setupLiveMigrations($appId, $appData['repair-steps']['live-migration']);
+        unset(self::$appVersion[$appId]);
+        // run upgrade code
+        if (file_exists($appPath . '/appinfo/update.php')) {
+            self::loadApp($appId, false);
+            include $appPath . '/appinfo/update.php';
+        }
+        self::setupBackgroundJobs($appData['background-jobs']);
+        if(isset($appData['settings']) && is_array($appData['settings'])) {
+            $appPath = self::getAppPath($appId);
+            self::registerAutoloading($appId, $appPath);
+            \OC::$server->getSettingsManager()->setupSettings($appData['settings']);
+        }
+
+        //set remote/public handlers
+        if (array_key_exists('ocsid', $appData)) {
+            \OC::$server->getConfig()->setAppValue($appId, 'ocsid', $appData['ocsid']);
+        } elseif(\OC::$server->getConfig()->getAppValue($appId, 'ocsid', null) !== null) {
+            \OC::$server->getConfig()->deleteAppValue($appId, 'ocsid');
+        }
+        foreach ($appData['remote'] as $name => $path) {
+            \OC::$server->getConfig()->setAppValue('core', 'remote_' . $name, $appId . '/' . $path);
+        }
+        foreach ($appData['public'] as $name => $path) {
+            \OC::$server->getConfig()->setAppValue('core', 'public_' . $name, $appId . '/' . $path);
+        }
+
+        self::setAppTypes($appId);
+
+        $version = \OC_App::getAppVersion($appId);
+        \OC::$server->getAppConfig()->setValue($appId, 'installed_version', $version);
+
+        \OC::$server->getEventDispatcher()->dispatch(ManagerEvent::EVENT_APP_UPDATE, new ManagerEvent(
+            ManagerEvent::EVENT_APP_UPDATE, $appId
+        ));
+
+        return true;
+    }
+
+    /**
+     * @param string $appId
+     * @param string[] $steps
+     * @throws \OC\NeedsUpdateException
+     */
+    public static function executeRepairSteps($appId, array $steps) {
+        if (empty($steps)) {
+            return;
+        }
+        // load the app
+        self::loadApp($appId, false);
+
+        $dispatcher = OC::$server->getEventDispatcher();
+
+        // load the steps
+        $r = new Repair([], $dispatcher);
+        foreach ($steps as $step) {
+            try {
+                $r->addStep($step);
+            } catch (Exception $ex) {
+                $r->emit('\OC\Repair', 'error', [$ex->getMessage()]);
+                \OC::$server->getLogger()->logException($ex);
+            }
+        }
+        // run the steps
+        $r->run();
+    }
+
+    public static function setupBackgroundJobs(array $jobs) {
+        $queue = \OC::$server->getJobList();
+        foreach ($jobs as $job) {
+            $queue->add($job);
+        }
+    }
+
+    /**
+     * @param string $appId
+     * @param string[] $steps
+     */
+    private static function setupLiveMigrations($appId, array $steps) {
+        $queue = \OC::$server->getJobList();
+        foreach ($steps as $step) {
+            $queue->add('OC\Migration\BackgroundRepair', [
+                'app' => $appId,
+                'step' => $step]);
+        }
+    }
+
+    /**
+     * @param string $appId
+     * @return \OC\Files\View|false
+     */
+    public static function getStorage($appId) {
+        if (OC_App::isEnabled($appId)) { //sanity check
+            if (\OC::$server->getUserSession()->isLoggedIn()) {
+                $view = new \OC\Files\View('/' . OC_User::getUser());
+                if (!$view->file_exists($appId)) {
+                    $view->mkdir($appId);
+                }
+                return new \OC\Files\View('/' . OC_User::getUser() . '/' . $appId);
+            } else {
+                \OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ', user not logged in', \OCP\Util::ERROR);
+                return false;
+            }
+        } else {
+            \OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ' not enabled', \OCP\Util::ERROR);
+            return false;
+        }
+    }
+
+    protected static function findBestL10NOption($options, $lang) {
+        $fallback = $similarLangFallback = $englishFallback = false;
+
+        $lang = strtolower($lang);
+        $similarLang = $lang;
+        if (strpos($similarLang, '_')) {
+            // For "de_DE" we want to find "de" and the other way around
+            $similarLang = substr($lang, 0, strpos($lang, '_'));
+        }
+
+        foreach ($options as $option) {
+            if (is_array($option)) {
+                if ($fallback === false) {
+                    $fallback = $option['@value'];
+                }
+
+                if (!isset($option['@attributes']['lang'])) {
+                    continue;
+                }
+
+                $attributeLang = strtolower($option['@attributes']['lang']);
+                if ($attributeLang === $lang) {
+                    return $option['@value'];
+                }
+
+                if ($attributeLang === $similarLang) {
+                    $similarLangFallback = $option['@value'];
+                } else if (strpos($attributeLang, $similarLang . '_') === 0) {
+                    if ($similarLangFallback === false) {
+                        $similarLangFallback =  $option['@value'];
+                    }
+                }
+            } else {
+                $englishFallback = $option;
+            }
+        }
+
+        if ($similarLangFallback !== false) {
+            return $similarLangFallback;
+        } else if ($englishFallback !== false) {
+            return $englishFallback;
+        }
+        return (string) $fallback;
+    }
+
+    /**
+     * parses the app data array and enhanced the 'description' value
+     *
+     * @param array $data the app data
+     * @param string $lang
+     * @return array improved app data
+     */
+    public static function parseAppInfo(array $data, $lang = null) {
+
+        if ($lang && isset($data['name']) && is_array($data['name'])) {
+            $data['name'] = self::findBestL10NOption($data['name'], $lang);
+        }
+        if ($lang && isset($data['summary']) && is_array($data['summary'])) {
+            $data['summary'] = self::findBestL10NOption($data['summary'], $lang);
+        }
+        if ($lang && isset($data['description']) && is_array($data['description'])) {
+            $data['description'] = trim(self::findBestL10NOption($data['description'], $lang));
+        } else if (isset($data['description']) && is_string($data['description'])) {
+            $data['description'] = trim($data['description']);
+        } else  {
+            $data['description'] = '';
+        }
+
+        return $data;
+    }
+
+    /**
+     * @param \OCP\IConfig $config
+     * @param \OCP\IL10N $l
+     * @param array $info
+     * @throws \Exception
+     */
+    protected static function checkAppDependencies($config, $l, $info) {
+        $dependencyAnalyzer = new DependencyAnalyzer(new Platform($config), $l);
+        $missing = $dependencyAnalyzer->analyze($info);
+        if (!empty($missing)) {
+            $missingMsg = join(PHP_EOL, $missing);
+            throw new \Exception(
+                $l->t('App "%s" cannot be installed because the following dependencies are not fulfilled: %s',
+                    [$info['name'], $missingMsg]
+                )
+            );
+        }
+    }
 }

Spacing +68 added lines, -68 removed lines

@@ -111,9 +111,9 @@ 
 		$apps = self::getEnabledApps();
 
 		// Add each apps' folder as allowed class path
-		foreach($apps as $app) {
+		foreach ($apps as $app) {
 			$path = self::getAppPath($app);
-			if($path !== false) {
+			if ($path !== false) {
 				self::registerAutoloading($app, $path);
 			}
 		}
@@ -140,15 +140,15 @@ 
 	public static function loadApp($app, $checkUpgrade = true) {
 		self::$loadedApps[] = $app;
 		$appPath = self::getAppPath($app);
-		if($appPath === false) {
+		if ($appPath === false) {
 			return;
 		}
 
 		// in case someone calls loadApp() directly
 		self::registerAutoloading($app, $appPath);
 
-		if (is_file($appPath . '/appinfo/app.php')) {
-			\OC::$server->getEventLogger()->start('load_app_' . $app, 'Load app: ' . $app);
+		if (is_file($appPath.'/appinfo/app.php')) {
+			\OC::$server->getEventLogger()->start('load_app_'.$app, 'Load app: '.$app);
 			if ($checkUpgrade and self::shouldUpgrade($app)) {
 				throw new \OC\NeedsUpdateException();
 			}
@@ -160,7 +160,7 @@ 
 				// enabled for groups
 				self::$enabledAppsCache = array();
 			}
-			\OC::$server->getEventLogger()->end('load_app_' . $app);
+			\OC::$server->getEventLogger()->end('load_app_'.$app);
 		}
 
 		$info = self::getAppInfo($app);
@@ -187,16 +187,16 @@ 
 	 * @param string $path
 	 */
 	public static function registerAutoloading($app, $path) {
-		$key = $app . '-' . $path;
-		if(isset(self::$alreadyRegistered[$key])) {
+		$key = $app.'-'.$path;
+		if (isset(self::$alreadyRegistered[$key])) {
 			return;
 		}
 		self::$alreadyRegistered[$key] = true;
 		// Register on PSR-4 composer autoloader
 		$appNamespace = \OC\AppFramework\App::buildAppNamespace($app);
-		\OC::$composerAutoloader->addPsr4($appNamespace . '\\', $path . '/lib/', true);
+		\OC::$composerAutoloader->addPsr4($appNamespace.'\\', $path.'/lib/', true);
 		if (defined('PHPUNIT_RUN') || defined('CLI_TEST_RUN')) {
-			\OC::$composerAutoloader->addPsr4($appNamespace . '\\Tests\\', $path . '/tests/', true);
+			\OC::$composerAutoloader->addPsr4($appNamespace.'\\Tests\\', $path.'/tests/', true);
 		}
 
 		// Register on legacy autoloader
@@ -211,7 +211,7 @@ 
 	private static function requireAppFile($app) {
 		try {
 			// encapsulated here to avoid variable scope conflicts
-			require_once $app . '/appinfo/app.php';
+			require_once $app.'/appinfo/app.php';
 		} catch (Error $ex) {
 			\OC::$server->getLogger()->logException($ex);
 			$blacklist = \OC::$server->getAppManager()->getAlwaysEnabledApps();
@@ -265,7 +265,7 @@ 
 	 */
 	public static function setAppTypes($app) {
 		$appData = self::getAppInfo($app);
-		if(!is_array($appData)) {
+		if (!is_array($appData)) {
 			return;
 		}
 
@@ -329,8 +329,8 @@ 
 		} else {
 			$apps = $appManager->getEnabledAppsForUser($user);
 		}
-		$apps = array_filter($apps, function ($app) {
-			return $app !== 'files';//we add this manually
+		$apps = array_filter($apps, function($app) {
+			return $app !== 'files'; //we add this manually
 		});
 		sort($apps);
 		array_unshift($apps, 'files');
@@ -374,7 +374,7 @@ 
 		);
 		$isDownloaded = $installer->isDownloaded($appId);
 
-		if(!$isDownloaded) {
+		if (!$isDownloaded) {
 			$installer->downloadApp($appId);
 		}
 
@@ -412,7 +412,7 @@ 
 		}
 
 		$info = self::getAppInfo($appId);
-		if(isset($info['settings']) && is_array($info['settings'])) {
+		if (isset($info['settings']) && is_array($info['settings'])) {
 			$appPath = self::getAppPath($appId);
 			self::registerAutoloading($appId, $appPath);
 			\OC::$server->getSettingsManager()->setupSettings($info['settings']);
@@ -501,7 +501,7 @@ 
 			//SubAdmins are also allowed to access user management
 			$userObject = \OC::$server->getUserSession()->getUser();
 			$isSubAdmin = false;
-			if($userObject !== null) {
+			if ($userObject !== null) {
 				$isSubAdmin = \OC::$server->getGroupManager()->getSubAdmin()->isSubAdmin($userObject);
 			}
 			if ($isSubAdmin) {
@@ -535,7 +535,7 @@ 
 	// This is private as well. It simply works, so don't ask for more details
 	private static function proceedNavigation($list) {
 		$headerIconCount = 8;
-		if(OC_User::isAdminUser(OC_User::getUser())) {
+		if (OC_User::isAdminUser(OC_User::getUser())) {
 			$headerIconCount--;
 		}
 		usort($list, function($a, $b) {
@@ -560,16 +560,16 @@ 
 		}
 		unset($navEntry);
 
-		if($activeAppIndex > ($headerIconCount-1)) {
+		if ($activeAppIndex > ($headerIconCount - 1)) {
 			$active = $list[$activeAppIndex];
-			$lastInHeader = $list[$headerIconCount-1];
-			$list[$headerIconCount-1] = $active;
+			$lastInHeader = $list[$headerIconCount - 1];
+			$list[$headerIconCount - 1] = $active;
 			$list[$activeAppIndex] = $lastInHeader;
 		}
 
 		foreach ($list as $index => &$navEntry) {
 			$navEntry['showInHeader'] = false;
-			if($index < $headerIconCount) {
+			if ($index < $headerIconCount) {
 				$navEntry['showInHeader'] = true;
 			}
 		}
@@ -581,7 +581,7 @@ 
 
 	public static function proceedAppNavigation($entries) {
 		$headerIconCount = 8;
-		if(OC_User::isAdminUser(OC_User::getUser())) {
+		if (OC_User::isAdminUser(OC_User::getUser())) {
 			$headerIconCount--;
 		}
 		$activeAppIndex = -1;
@@ -597,10 +597,10 @@ 
 			}
 		}
 		// move active item to last position
-		if($activeAppIndex > ($headerIconCount-1)) {
+		if ($activeAppIndex > ($headerIconCount - 1)) {
 			$active = $list[$activeAppIndex];
-			$lastInHeader = $list[$headerIconCount-1];
-			$list[$headerIconCount-1] = $active;
+			$lastInHeader = $list[$headerIconCount - 1];
+			$list[$headerIconCount - 1] = $active;
 			$list[$activeAppIndex] = $lastInHeader;
 		}
 		$list = array_slice($list, 0, $headerIconCount);
@@ -637,7 +637,7 @@ 
 	 */
 	public static function findAppInDirectories($appId) {
 		$sanitizedAppId = self::cleanAppId($appId);
-		if($sanitizedAppId !== $appId) {
+		if ($sanitizedAppId !== $appId) {
 			return false;
 		}
 		static $app_dir = array();
@@ -648,7 +648,7 @@ 
 
 		$possibleApps = array();
 		foreach (OC::$APPSROOTS as $dir) {
-			if (file_exists($dir['path'] . '/' . $appId)) {
+			if (file_exists($dir['path'].'/'.$appId)) {
 				$possibleApps[] = $dir;
 			}
 		}
@@ -689,7 +689,7 @@ 
 		}
 
 		if (($dir = self::findAppInDirectories($appId)) != false) {
-			return $dir['path'] . '/' . $appId;
+			return $dir['path'].'/'.$appId;
 		}
 		return false;
 	}
@@ -703,7 +703,7 @@ 
 	 */
 	public static function getAppWebPath($appId) {
 		if (($dir = self::findAppInDirectories($appId)) != false) {
-			return OC::$WEBROOT . $dir['url'] . '/' . $appId;
+			return OC::$WEBROOT.$dir['url'].'/'.$appId;
 		}
 		return false;
 	}
@@ -716,7 +716,7 @@ 
 	 * @return string
 	 */
 	public static function getAppVersion($appId, $useCache = true) {
-		if($useCache && isset(self::$appVersion[$appId])) {
+		if ($useCache && isset(self::$appVersion[$appId])) {
 			return self::$appVersion[$appId];
 		}
 
@@ -732,7 +732,7 @@ 
 	 * @return string
 	 */
 	public static function getAppVersionByPath($path) {
-		$infoFile = $path . '/appinfo/info.xml';
+		$infoFile = $path.'/appinfo/info.xml';
 		$appData = self::getAppInfo($infoFile, true);
 		return isset($appData['version']) ? $appData['version'] : '';
 	}
@@ -755,10 +755,10 @@ 
 				return self::$appInfo[$appId];
 			}
 			$appPath = self::getAppPath($appId);
-			if($appPath === false) {
+			if ($appPath === false) {
 				return null;
 			}
-			$file = $appPath . '/appinfo/info.xml';
+			$file = $appPath.'/appinfo/info.xml';
 		}
 
 		$parser = new InfoParser(\OC::$server->getMemCacheFactory()->create('core.appinfo'));
@@ -767,9 +767,9 @@ 
 		if (is_array($data)) {
 			$data = OC_App::parseAppInfo($data, $lang);
 		}
-		if(isset($data['ocsid'])) {
+		if (isset($data['ocsid'])) {
 			$storedId = \OC::$server->getConfig()->getAppValue($appId, 'ocsid');
-			if($storedId !== '' && $storedId !== $data['ocsid']) {
+			if ($storedId !== '' && $storedId !== $data['ocsid']) {
 				$data['ocsid'] = $storedId;
 			}
 		}
@@ -865,7 +865,7 @@ 
 	 * @param string $page
 	 */
 	public static function registerAdmin($app, $page) {
-		self::$adminForms[] = $app . '/' . $page . '.php';
+		self::$adminForms[] = $app.'/'.$page.'.php';
 	}
 
 	/**
@@ -874,7 +874,7 @@ 
 	 * @param string $page
 	 */
 	public static function registerPersonal($app, $page) {
-		self::$personalForms[] = $app . '/' . $page . '.php';
+		self::$personalForms[] = $app.'/'.$page.'.php';
 	}
 
 	/**
@@ -903,7 +903,7 @@ 
 
 		foreach (OC::$APPSROOTS as $apps_dir) {
 			if (!is_readable($apps_dir['path'])) {
-				\OCP\Util::writeLog('core', 'unable to read app folder : ' . $apps_dir['path'], \OCP\Util::WARN);
+				\OCP\Util::writeLog('core', 'unable to read app folder : '.$apps_dir['path'], \OCP\Util::WARN);
 				continue;
 			}
 			$dh = opendir($apps_dir['path']);
@@ -911,7 +911,7 @@ 
 			if (is_resource($dh)) {
 				while (($file = readdir($dh)) !== false) {
 
-					if ($file[0] != '.' and is_dir($apps_dir['path'] . '/' . $file) and is_file($apps_dir['path'] . '/' . $file . '/appinfo/info.xml')) {
+					if ($file[0] != '.' and is_dir($apps_dir['path'].'/'.$file) and is_file($apps_dir['path'].'/'.$file.'/appinfo/info.xml')) {
 
 						$apps[] = $file;
 					}
@@ -941,12 +941,12 @@ 
 
 				$info = OC_App::getAppInfo($app, false, $langCode);
 				if (!is_array($info)) {
-					\OCP\Util::writeLog('core', 'Could not read app info file for app "' . $app . '"', \OCP\Util::ERROR);
+					\OCP\Util::writeLog('core', 'Could not read app info file for app "'.$app.'"', \OCP\Util::ERROR);
 					continue;
 				}
 
 				if (!isset($info['name'])) {
-					\OCP\Util::writeLog('core', 'App id "' . $app . '" has no name in appinfo', \OCP\Util::ERROR);
+					\OCP\Util::writeLog('core', 'App id "'.$app.'" has no name in appinfo', \OCP\Util::ERROR);
 					continue;
 				}
 
@@ -973,13 +973,13 @@ 
 				}
 
 				$appPath = self::getAppPath($app);
-				if($appPath !== false) {
-					$appIcon = $appPath . '/img/' . $app . '.svg';
+				if ($appPath !== false) {
+					$appIcon = $appPath.'/img/'.$app.'.svg';
 					if (file_exists($appIcon)) {
-						$info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, $app . '.svg');
+						$info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, $app.'.svg');
 						$info['previewAsIcon'] = true;
 					} else {
-						$appIcon = $appPath . '/img/app.svg';
+						$appIcon = $appPath.'/img/app.svg';
 						if (file_exists($appIcon)) {
 							$info['preview'] = \OC::$server->getURLGenerator()->imagePath($app, 'app.svg');
 							$info['previewAsIcon'] = true;
@@ -1013,9 +1013,9 @@ 
 	 * @return string|false
 	 */
 	public static function getInternalAppIdByOcs($ocsID) {
-		if(is_numeric($ocsID)) {
+		if (is_numeric($ocsID)) {
 			$idArray = \OC::$server->getAppConfig()->getValues(false, 'ocsid');
-			if(array_search($ocsID, $idArray)) {
+			if (array_search($ocsID, $idArray)) {
 				return array_search($ocsID, $idArray);
 			}
 		}
@@ -1119,7 +1119,7 @@ 
 	public static function getAppVersions() {
 		static $versions;
 
-		if(!$versions) {
+		if (!$versions) {
 			$appConfig = \OC::$server->getAppConfig();
 			$versions = $appConfig->getValues(false, 'installed_version');
 		}
@@ -1141,7 +1141,7 @@ 
 		if ($app !== false) {
 			// check if the app is compatible with this version of ownCloud
 			$info = self::getAppInfo($app);
-			if(!is_array($info)) {
+			if (!is_array($info)) {
 				throw new \Exception(
 					$l->t('App "%s" cannot be installed because appinfo file cannot be read.',
 						[$info['name']]
@@ -1166,7 +1166,7 @@ 
 				$config->setAppValue($app, 'ocsid', $appData['id']);
 			}
 
-			if(isset($info['settings']) && is_array($info['settings'])) {
+			if (isset($info['settings']) && is_array($info['settings'])) {
 				$appPath = self::getAppPath($app);
 				self::registerAutoloading($app, $appPath);
 				\OC::$server->getSettingsManager()->setupSettings($info['settings']);
@@ -1174,7 +1174,7 @@ 
 
 			\OC_Hook::emit('OC_App', 'post_enable', array('app' => $app));
 		} else {
-			if(empty($appName) ) {
+			if (empty($appName)) {
 				throw new \Exception($l->t("No app name specified"));
 			} else {
 				throw new \Exception($l->t("App '%s' could not be installed!", $appName));
@@ -1192,24 +1192,24 @@ 
 	 */
 	public static function updateApp($appId) {
 		$appPath = self::getAppPath($appId);
-		if($appPath === false) {
+		if ($appPath === false) {
 			return false;
 		}
 		$appData = self::getAppInfo($appId);
 		self::executeRepairSteps($appId, $appData['repair-steps']['pre-migration']);
-		if (file_exists($appPath . '/appinfo/database.xml')) {
-			OC_DB::updateDbFromStructure($appPath . '/appinfo/database.xml');
+		if (file_exists($appPath.'/appinfo/database.xml')) {
+			OC_DB::updateDbFromStructure($appPath.'/appinfo/database.xml');
 		}
 		self::executeRepairSteps($appId, $appData['repair-steps']['post-migration']);
 		self::setupLiveMigrations($appId, $appData['repair-steps']['live-migration']);
 		unset(self::$appVersion[$appId]);
 		// run upgrade code
-		if (file_exists($appPath . '/appinfo/update.php')) {
+		if (file_exists($appPath.'/appinfo/update.php')) {
 			self::loadApp($appId, false);
-			include $appPath . '/appinfo/update.php';
+			include $appPath.'/appinfo/update.php';
 		}
 		self::setupBackgroundJobs($appData['background-jobs']);
-		if(isset($appData['settings']) && is_array($appData['settings'])) {
+		if (isset($appData['settings']) && is_array($appData['settings'])) {
 			$appPath = self::getAppPath($appId);
 			self::registerAutoloading($appId, $appPath);
 			\OC::$server->getSettingsManager()->setupSettings($appData['settings']);
@@ -1218,14 +1218,14 @@ 
 		//set remote/public handlers
 		if (array_key_exists('ocsid', $appData)) {
 			\OC::$server->getConfig()->setAppValue($appId, 'ocsid', $appData['ocsid']);
-		} elseif(\OC::$server->getConfig()->getAppValue($appId, 'ocsid', null) !== null) {
+		} elseif (\OC::$server->getConfig()->getAppValue($appId, 'ocsid', null) !== null) {
 			\OC::$server->getConfig()->deleteAppValue($appId, 'ocsid');
 		}
 		foreach ($appData['remote'] as $name => $path) {
-			\OC::$server->getConfig()->setAppValue('core', 'remote_' . $name, $appId . '/' . $path);
+			\OC::$server->getConfig()->setAppValue('core', 'remote_'.$name, $appId.'/'.$path);
 		}
 		foreach ($appData['public'] as $name => $path) {
-			\OC::$server->getConfig()->setAppValue('core', 'public_' . $name, $appId . '/' . $path);
+			\OC::$server->getConfig()->setAppValue('core', 'public_'.$name, $appId.'/'.$path);
 		}
 
 		self::setAppTypes($appId);
@@ -1295,17 +1295,17 @@ 
 	public static function getStorage($appId) {
 		if (OC_App::isEnabled($appId)) { //sanity check
 			if (\OC::$server->getUserSession()->isLoggedIn()) {
-				$view = new \OC\Files\View('/' . OC_User::getUser());
+				$view = new \OC\Files\View('/'.OC_User::getUser());
 				if (!$view->file_exists($appId)) {
 					$view->mkdir($appId);
 				}
-				return new \OC\Files\View('/' . OC_User::getUser() . '/' . $appId);
+				return new \OC\Files\View('/'.OC_User::getUser().'/'.$appId);
 			} else {
-				\OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ', user not logged in', \OCP\Util::ERROR);
+				\OCP\Util::writeLog('core', 'Can\'t get app storage, app '.$appId.', user not logged in', \OCP\Util::ERROR);
 				return false;
 			}
 		} else {
-			\OCP\Util::writeLog('core', 'Can\'t get app storage, app ' . $appId . ' not enabled', \OCP\Util::ERROR);
+			\OCP\Util::writeLog('core', 'Can\'t get app storage, app '.$appId.' not enabled', \OCP\Util::ERROR);
 			return false;
 		}
 	}
@@ -1337,9 +1337,9 @@ 
 
 				if ($attributeLang === $similarLang) {
 					$similarLangFallback = $option['@value'];
-				} else if (strpos($attributeLang, $similarLang . '_') === 0) {
+				} else if (strpos($attributeLang, $similarLang.'_') === 0) {
 					if ($similarLangFallback === false) {
-						$similarLangFallback =  $option['@value'];
+						$similarLangFallback = $option['@value'];
 					}
 				}
 			} else {
@@ -1374,7 +1374,7 @@ 
 			$data['description'] = trim(self::findBestL10NOption($data['description'], $lang));
 		} else if (isset($data['description']) && is_string($data['description'])) {
 			$data['description'] = trim($data['description']);
-		} else  {
+		} else {
 			$data['description'] = '';
 		}