nextcloud / server

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

Doc Comments +1 added lines, -1 removed lines

@@ -61,7 +61,7 @@
 	 * The deserialize method is called during xml parsing.
 	 *
 	 * @param Reader $reader
-	 * @return mixed
+	 * @return null|ShareTypeList
 	 */
 	static function xmlDeserialize(Reader $reader) {
 		$shareTypes = [];

Indentation +51 added lines, -51 removed lines

@@ -32,61 +32,61 @@
  * This property contains multiple "share-type" elements, each containing a share type.
  */
 class ShareTypeList implements Element {
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
 
-	/**
-	 * Share types
-	 *
-	 * @var int[]
-	 */
-	private $shareTypes;
+    /**
+     * Share types
+     *
+     * @var int[]
+     */
+    private $shareTypes;
 
-	/**
-	 * @param int[] $shareTypes
-	 */
-	public function __construct($shareTypes) {
-		$this->shareTypes = $shareTypes;
-	}
+    /**
+     * @param int[] $shareTypes
+     */
+    public function __construct($shareTypes) {
+        $this->shareTypes = $shareTypes;
+    }
 
-	/**
-	 * Returns the share types
-	 *
-	 * @return int[]
-	 */
-	public function getShareTypes() {
-		return $this->shareTypes;
-	}
+    /**
+     * Returns the share types
+     *
+     * @return int[]
+     */
+    public function getShareTypes() {
+        return $this->shareTypes;
+    }
 
-	/**
-	 * The deserialize method is called during xml parsing.
-	 *
-	 * @param Reader $reader
-	 * @return mixed
-	 */
-	static function xmlDeserialize(Reader $reader) {
-		$shareTypes = [];
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+        $shareTypes = [];
 
-		$tree = $reader->parseInnerTree();
-		if ($tree === null) {
-			return null;
-		}
-		foreach ($tree as $elem) {
-			if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}share-type') {
-				$shareTypes[] = (int)$elem['value'];
-			}
-		}
-		return new self($shareTypes);
-	}
+        $tree = $reader->parseInnerTree();
+        if ($tree === null) {
+            return null;
+        }
+        foreach ($tree as $elem) {
+            if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}share-type') {
+                $shareTypes[] = (int)$elem['value'];
+            }
+        }
+        return new self($shareTypes);
+    }
 
-	/**
-	 * The xmlSerialize metod is called during xml writing.
-	 *
-	 * @param Writer $writer
-	 * @return void
-	 */
-	function xmlSerialize(Writer $writer) {
-		foreach ($this->shareTypes as $shareType) {
-			$writer->writeElement('{' . self::NS_OWNCLOUD . '}share-type', $shareType);
-		}
-	}
+    /**
+     * The xmlSerialize metod is called during xml writing.
+     *
+     * @param Writer $writer
+     * @return void
+     */
+    function xmlSerialize(Writer $writer) {
+        foreach ($this->shareTypes as $shareType) {
+            $writer->writeElement('{' . self::NS_OWNCLOUD . '}share-type', $shareType);
+        }
+    }
 }

Spacing +3 added lines, -3 removed lines

@@ -71,8 +71,8 @@ 
 			return null;
 		}
 		foreach ($tree as $elem) {
-			if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}share-type') {
-				$shareTypes[] = (int)$elem['value'];
+			if ($elem['name'] === '{'.self::NS_OWNCLOUD.'}share-type') {
+				$shareTypes[] = (int) $elem['value'];
 			}
 		}
 		return new self($shareTypes);
@@ -86,7 +86,7 @@ 
 	 */
 	function xmlSerialize(Writer $writer) {
 		foreach ($this->shareTypes as $shareType) {
-			$writer->writeElement('{' . self::NS_OWNCLOUD . '}share-type', $shareType);
+			$writer->writeElement('{'.self::NS_OWNCLOUD.'}share-type', $shareType);
 		}
 	}
 }

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

Doc Comments +1 added lines, -1 removed lines

@@ -80,7 +80,7 @@
 	 * the next element.
 	 *
 	 * @param Reader $reader
-	 * @return mixed
+	 * @return null|TagList
 	 */
 	static function xmlDeserialize(Reader $reader) {
 		$tags = [];

Indentation +79 added lines, -79 removed lines

@@ -34,92 +34,92 @@
  * This property contains multiple "tag" elements, each containing a tag name.
  */
 class TagList implements Element {
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
 
-	/**
-	 * tags
-	 *
-	 * @var array
-	 */
-	private $tags;
+    /**
+     * tags
+     *
+     * @var array
+     */
+    private $tags;
 
-	/**
-	 * @param array $tags
-	 */
-	public function __construct(array $tags) {
-		$this->tags = $tags;
-	}
+    /**
+     * @param array $tags
+     */
+    public function __construct(array $tags) {
+        $this->tags = $tags;
+    }
 
-	/**
-	 * Returns the tags
-	 *
-	 * @return array
-	 */
-	public function getTags() {
+    /**
+     * Returns the tags
+     *
+     * @return array
+     */
+    public function getTags() {
 
-		return $this->tags;
+        return $this->tags;
 
-	}
+    }
 
-	/**
-	 * The deserialize method is called during xml parsing.
-	 *
-	 * This method is called statictly, this is because in theory this method
-	 * may be used as a type of constructor, or factory method.
-	 *
-	 * Often you want to return an instance of the current class, but you are
-	 * free to return other data as well.
-	 *
-	 * You are responsible for advancing the reader to the next element. Not
-	 * doing anything will result in a never-ending loop.
-	 *
-	 * If you just want to skip parsing for this element altogether, you can
-	 * just call $reader->next();
-	 *
-	 * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
-	 * the next element.
-	 *
-	 * @param Reader $reader
-	 * @return mixed
-	 */
-	static function xmlDeserialize(Reader $reader) {
-		$tags = [];
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+        $tags = [];
 
-		$tree = $reader->parseInnerTree();
-		if ($tree === null) {
-			return null;
-		}
-		foreach ($tree as $elem) {
-			if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}tag') {
-				$tags[] = $elem['value'];
-			}
-		}
-		return new self($tags);
-	}
+        $tree = $reader->parseInnerTree();
+        if ($tree === null) {
+            return null;
+        }
+        foreach ($tree as $elem) {
+            if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}tag') {
+                $tags[] = $elem['value'];
+            }
+        }
+        return new self($tags);
+    }
 
-	/**
-	 * The xmlSerialize metod is called during xml writing.
-	 *
-	 * Use the $writer argument to write its own xml serialization.
-	 *
-	 * An important note: do _not_ create a parent element. Any element
-	 * implementing XmlSerializble should only ever write what's considered
-	 * its 'inner xml'.
-	 *
-	 * The parent of the current element is responsible for writing a
-	 * containing element.
-	 *
-	 * This allows serializers to be re-used for different element names.
-	 *
-	 * If you are opening new elements, you must also close them again.
-	 *
-	 * @param Writer $writer
-	 * @return void
-	 */
-	function xmlSerialize(Writer $writer) {
+    /**
+     * The xmlSerialize metod is called during xml writing.
+     *
+     * Use the $writer argument to write its own xml serialization.
+     *
+     * An important note: do _not_ create a parent element. Any element
+     * implementing XmlSerializble should only ever write what's considered
+     * its 'inner xml'.
+     *
+     * The parent of the current element is responsible for writing a
+     * containing element.
+     *
+     * This allows serializers to be re-used for different element names.
+     *
+     * If you are opening new elements, you must also close them again.
+     *
+     * @param Writer $writer
+     * @return void
+     */
+    function xmlSerialize(Writer $writer) {
 
-		foreach ($this->tags as $tag) {
-			$writer->writeElement('{' . self::NS_OWNCLOUD . '}tag', $tag);
-		}
-	}
+        foreach ($this->tags as $tag) {
+            $writer->writeElement('{' . self::NS_OWNCLOUD . '}tag', $tag);
+        }
+    }
 }

Spacing +2 added lines, -2 removed lines

@@ -90,7 +90,7 @@ 
 			return null;
 		}
 		foreach ($tree as $elem) {
-			if ($elem['name'] === '{' . self::NS_OWNCLOUD . '}tag') {
+			if ($elem['name'] === '{'.self::NS_OWNCLOUD.'}tag') {
 				$tags[] = $elem['value'];
 			}
 		}
@@ -119,7 +119,7 @@ 
 	function xmlSerialize(Writer $writer) {
 
 		foreach ($this->tags as $tag) {
-			$writer->writeElement('{' . self::NS_OWNCLOUD . '}tag', $tag);
+			$writer->writeElement('{'.self::NS_OWNCLOUD.'}tag', $tag);
 		}
 	}
 }

lib/private/Share/MailNotifications.php

Unused Use Statements -1 removed lines

@@ -30,7 +30,6 @@
 
 namespace OC\Share;
 
-use DateTime;
 use OCP\IL10N;
 use OCP\IURLGenerator;
 use OCP\IUser;

Indentation +100 added lines, -100 removed lines

@@ -46,113 +46,113 @@
  */
 class MailNotifications {
 
-	/** @var IUser sender userId */
-	private $user;
-	/** @var string sender email address */
-	private $replyTo;
-	/** @var string */
-	private $senderDisplayName;
-	/** @var IL10N */
-	private $l;
-	/** @var IMailer */
-	private $mailer;
-	/** @var Defaults */
-	private $defaults;
-	/** @var ILogger */
-	private $logger;
-	/** @var IURLGenerator */
-	private $urlGenerator;
+    /** @var IUser sender userId */
+    private $user;
+    /** @var string sender email address */
+    private $replyTo;
+    /** @var string */
+    private $senderDisplayName;
+    /** @var IL10N */
+    private $l;
+    /** @var IMailer */
+    private $mailer;
+    /** @var Defaults */
+    private $defaults;
+    /** @var ILogger */
+    private $logger;
+    /** @var IURLGenerator */
+    private $urlGenerator;
 
-	/**
-	 * @param IUser $user
-	 * @param IL10N $l10n
-	 * @param IMailer $mailer
-	 * @param ILogger $logger
-	 * @param Defaults $defaults
-	 * @param IURLGenerator $urlGenerator
-	 */
-	public function __construct(IUser $user,
-								IL10N $l10n,
-								IMailer $mailer,
-								ILogger $logger,
-								Defaults $defaults,
-								IURLGenerator $urlGenerator) {
-		$this->l = $l10n;
-		$this->user = $user;
-		$this->mailer = $mailer;
-		$this->logger = $logger;
-		$this->defaults = $defaults;
-		$this->urlGenerator = $urlGenerator;
+    /**
+     * @param IUser $user
+     * @param IL10N $l10n
+     * @param IMailer $mailer
+     * @param ILogger $logger
+     * @param Defaults $defaults
+     * @param IURLGenerator $urlGenerator
+     */
+    public function __construct(IUser $user,
+                                IL10N $l10n,
+                                IMailer $mailer,
+                                ILogger $logger,
+                                Defaults $defaults,
+                                IURLGenerator $urlGenerator) {
+        $this->l = $l10n;
+        $this->user = $user;
+        $this->mailer = $mailer;
+        $this->logger = $logger;
+        $this->defaults = $defaults;
+        $this->urlGenerator = $urlGenerator;
 
-		$this->replyTo = $this->user->getEMailAddress();
-		$this->senderDisplayName = $this->user->getDisplayName();
-	}
+        $this->replyTo = $this->user->getEMailAddress();
+        $this->senderDisplayName = $this->user->getDisplayName();
+    }
 
-	/**
-	 * inform recipient about public link share
-	 *
-	 * @param string $recipient recipient email address
-	 * @param string $filename the shared file
-	 * @param string $link the public link
-	 * @param int $expiration expiration date (timestamp)
-	 * @return string[] $result of failed recipients
-	 */
-	public function sendLinkShareMail($recipient, $filename, $link, $expiration) {
-		$subject = (string)$this->l->t('%s shared »%s« with you', [$this->senderDisplayName, $filename]);
-		list($htmlBody, $textBody) = $this->createMailBody($filename, $link, $expiration);
+    /**
+     * inform recipient about public link share
+     *
+     * @param string $recipient recipient email address
+     * @param string $filename the shared file
+     * @param string $link the public link
+     * @param int $expiration expiration date (timestamp)
+     * @return string[] $result of failed recipients
+     */
+    public function sendLinkShareMail($recipient, $filename, $link, $expiration) {
+        $subject = (string)$this->l->t('%s shared »%s« with you', [$this->senderDisplayName, $filename]);
+        list($htmlBody, $textBody) = $this->createMailBody($filename, $link, $expiration);
 
-		$recipient = str_replace([', ', '; ', ',', ';', ' '], ',', $recipient);
-		$recipients = explode(',', $recipient);
-		try {
-			$message = $this->mailer->createMessage();
-			$message->setSubject($subject);
-			$message->setTo($recipients);
-			$message->setHtmlBody($htmlBody);
-			$message->setPlainBody($textBody);
-			$message->setFrom([
-				Util::getDefaultEmailAddress('sharing-noreply') =>
-					(string)$this->l->t('%s via %s', [
-						$this->senderDisplayName,
-						$this->defaults->getName()
-					]),
-			]);
-			if(!is_null($this->replyTo)) {
-				$message->setReplyTo([$this->replyTo]);
-			}
+        $recipient = str_replace([', ', '; ', ',', ';', ' '], ',', $recipient);
+        $recipients = explode(',', $recipient);
+        try {
+            $message = $this->mailer->createMessage();
+            $message->setSubject($subject);
+            $message->setTo($recipients);
+            $message->setHtmlBody($htmlBody);
+            $message->setPlainBody($textBody);
+            $message->setFrom([
+                Util::getDefaultEmailAddress('sharing-noreply') =>
+                    (string)$this->l->t('%s via %s', [
+                        $this->senderDisplayName,
+                        $this->defaults->getName()
+                    ]),
+            ]);
+            if(!is_null($this->replyTo)) {
+                $message->setReplyTo([$this->replyTo]);
+            }
 
-			return $this->mailer->send($message);
-		} catch (\Exception $e) {
-			$this->logger->error("Can't send mail with public link to $recipient: ".$e->getMessage(), ['app' => 'sharing']);
-			return [$recipient];
-		}
-	}
+            return $this->mailer->send($message);
+        } catch (\Exception $e) {
+            $this->logger->error("Can't send mail with public link to $recipient: ".$e->getMessage(), ['app' => 'sharing']);
+            return [$recipient];
+        }
+    }
 
-	/**
-	 * create mail body for plain text and html mail
-	 *
-	 * @param string $filename the shared file
-	 * @param string $link link to the shared file
-	 * @param int $expiration expiration date (timestamp)
-	 * @param string $prefix prefix of mail template files
-	 * @return array an array of the html mail body and the plain text mail body
-	 */
-	private function createMailBody($filename, $link, $expiration, $prefix = '') {
-		$formattedDate = $expiration ? $this->l->l('date', $expiration) : null;
+    /**
+     * create mail body for plain text and html mail
+     *
+     * @param string $filename the shared file
+     * @param string $link link to the shared file
+     * @param int $expiration expiration date (timestamp)
+     * @param string $prefix prefix of mail template files
+     * @return array an array of the html mail body and the plain text mail body
+     */
+    private function createMailBody($filename, $link, $expiration, $prefix = '') {
+        $formattedDate = $expiration ? $this->l->l('date', $expiration) : null;
 
-		$html = new \OC_Template('core', $prefix . 'mail', '');
-		$html->assign ('link', $link);
-		$html->assign ('user_displayname', $this->senderDisplayName);
-		$html->assign ('filename', $filename);
-		$html->assign('expiration',  $formattedDate);
-		$htmlMail = $html->fetchPage();
+        $html = new \OC_Template('core', $prefix . 'mail', '');
+        $html->assign ('link', $link);
+        $html->assign ('user_displayname', $this->senderDisplayName);
+        $html->assign ('filename', $filename);
+        $html->assign('expiration',  $formattedDate);
+        $htmlMail = $html->fetchPage();
 
-		$plainText = new \OC_Template('core', $prefix . 'altmail', '');
-		$plainText->assign ('link', $link);
-		$plainText->assign ('user_displayname', $this->senderDisplayName);
-		$plainText->assign ('filename', $filename);
-		$plainText->assign('expiration', $formattedDate);
-		$plainTextMail = $plainText->fetchPage();
+        $plainText = new \OC_Template('core', $prefix . 'altmail', '');
+        $plainText->assign ('link', $link);
+        $plainText->assign ('user_displayname', $this->senderDisplayName);
+        $plainText->assign ('filename', $filename);
+        $plainText->assign('expiration', $formattedDate);
+        $plainTextMail = $plainText->fetchPage();
 
-		return [$htmlMail, $plainTextMail];
-	}
+        return [$htmlMail, $plainTextMail];
+    }
 }

Spacing +12 added lines, -12 removed lines

@@ -98,7 +98,7 @@ 
 	 * @return string[] $result of failed recipients
 	 */
 	public function sendLinkShareMail($recipient, $filename, $link, $expiration) {
-		$subject = (string)$this->l->t('%s shared »%s« with you', [$this->senderDisplayName, $filename]);
+		$subject = (string) $this->l->t('%s shared »%s« with you', [$this->senderDisplayName, $filename]);
 		list($htmlBody, $textBody) = $this->createMailBody($filename, $link, $expiration);
 
 		$recipient = str_replace([', ', '; ', ',', ';', ' '], ',', $recipient);
@@ -111,12 +111,12 @@ 
 			$message->setPlainBody($textBody);
 			$message->setFrom([
 				Util::getDefaultEmailAddress('sharing-noreply') =>
-					(string)$this->l->t('%s via %s', [
+					(string) $this->l->t('%s via %s', [
 						$this->senderDisplayName,
 						$this->defaults->getName()
 					]),
 			]);
-			if(!is_null($this->replyTo)) {
+			if (!is_null($this->replyTo)) {
 				$message->setReplyTo([$this->replyTo]);
 			}
 
@@ -139,17 +139,17 @@ 
 	private function createMailBody($filename, $link, $expiration, $prefix = '') {
 		$formattedDate = $expiration ? $this->l->l('date', $expiration) : null;
 
-		$html = new \OC_Template('core', $prefix . 'mail', '');
-		$html->assign ('link', $link);
-		$html->assign ('user_displayname', $this->senderDisplayName);
-		$html->assign ('filename', $filename);
-		$html->assign('expiration',  $formattedDate);
+		$html = new \OC_Template('core', $prefix.'mail', '');
+		$html->assign('link', $link);
+		$html->assign('user_displayname', $this->senderDisplayName);
+		$html->assign('filename', $filename);
+		$html->assign('expiration', $formattedDate);
 		$htmlMail = $html->fetchPage();
 
-		$plainText = new \OC_Template('core', $prefix . 'altmail', '');
-		$plainText->assign ('link', $link);
-		$plainText->assign ('user_displayname', $this->senderDisplayName);
-		$plainText->assign ('filename', $filename);
+		$plainText = new \OC_Template('core', $prefix.'altmail', '');
+		$plainText->assign('link', $link);
+		$plainText->assign('user_displayname', $this->senderDisplayName);
+		$plainText->assign('filename', $filename);
 		$plainText->assign('expiration', $formattedDate);
 		$plainTextMail = $plainText->fetchPage();
 

lib/private/legacy/app.php

Unused Use Statements -1 removed lines

@@ -51,7 +51,6 @@
 use OC\App\InfoParser;
 use OC\App\Platform;
 use OC\Installer;
-use OC\OCSClient;
 use OC\Repair;
 use OCP\App\ManagerEvent;
 

Doc Comments +6 added lines, -1 removed lines

@@ -1063,7 +1063,7 @@ 
 	 * @param string $app
 	 * @param \OCP\IConfig $config
 	 * @param \OCP\IL10N $l
-	 * @return bool
+	 * @return string
 	 *
 	 * @throws Exception if app is not compatible with this version of ownCloud
 	 * @throws Exception if no app-name was specified
@@ -1243,6 +1243,11 @@ 
 		}
 	}
 
+	/**
+	 * @param string $lang
+	 *
+	 * @return string
+	 */
 	protected static function findBestL10NOption($options, $lang) {
 		$fallback = $similarLangFallback = $englishFallback = false;
 

Indentation +1276 added lines, -1276 removed lines

@@ -61,1280 +61,1280 @@
  * 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 $app
-	 */
-	public static function loadApp($app) {
-		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: ' . $app);
-			self::requireAppFile($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::$server->registerNamespace($app, $appNamespace);
-		\OC::$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);
-	}
-
-	// This is private as well. It simply works, so don't ask for more details
-	private static function proceedNavigation($list) {
-		usort($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) {
-			$navEntry['showInHeader'] = true;
-			if ($navEntry['id'] == $activeApp) {
-				$navEntry['active'] = true;
-				$activeAppIndex = $index;
-			} else {
-				$navEntry['active'] = false;
-			}
-		}
-		unset($navEntry);
-
-		if (count($list) <= 8) {
-			return $list;
-		}
-
-		$headerIconCount = 7;
-		if($activeAppIndex > ($headerIconCount-1)) {
-			$active = $list[$activeAppIndex];
-			$lastInHeader = $list[$headerIconCount-1];
-			$list[$headerIconCount-1] = $active;
-			$list[$activeAppIndex] = $lastInHeader;
-		}
-
-		foreach ($list as $index => &$navEntry) {
-			if($index >= $headerIconCount) {
-				$navEntry['showInHeader'] = false;
-			}
-		}
-
-		return $list;
-	}
-
-	public static function proceedAppNavigation($entries) {
-		$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 {
-				$navEntry['active'] = false;
-			}
-		}
-
-
-		if (count($list) <= 8) {
-			return $list;
-		}
-
-		$headerIconCount = 7;
-		// move active item to last position
-		if($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();
-		return self::proceedNavigation($entries);
-	}
-
-	/**
-	 * 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();
-		return self::proceedAppNavigation($entries);
-	}
-
-	/**
-	 * 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() {
-		$entries = OC::$server->getNavigationManager()->getAll('settings');
-		return self::proceedNavigation($entries);
-	}
-
-	/**
-	 * 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);
-			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);
-
-		$dispatcher = OC::$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 $app
+     */
+    public static function loadApp($app) {
+        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: ' . $app);
+            self::requireAppFile($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::$server->registerNamespace($app, $appNamespace);
+        \OC::$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);
+    }
+
+    // This is private as well. It simply works, so don't ask for more details
+    private static function proceedNavigation($list) {
+        usort($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) {
+            $navEntry['showInHeader'] = true;
+            if ($navEntry['id'] == $activeApp) {
+                $navEntry['active'] = true;
+                $activeAppIndex = $index;
+            } else {
+                $navEntry['active'] = false;
+            }
+        }
+        unset($navEntry);
+
+        if (count($list) <= 8) {
+            return $list;
+        }
+
+        $headerIconCount = 7;
+        if($activeAppIndex > ($headerIconCount-1)) {
+            $active = $list[$activeAppIndex];
+            $lastInHeader = $list[$headerIconCount-1];
+            $list[$headerIconCount-1] = $active;
+            $list[$activeAppIndex] = $lastInHeader;
+        }
+
+        foreach ($list as $index => &$navEntry) {
+            if($index >= $headerIconCount) {
+                $navEntry['showInHeader'] = false;
+            }
+        }
+
+        return $list;
+    }
+
+    public static function proceedAppNavigation($entries) {
+        $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 {
+                $navEntry['active'] = false;
+            }
+        }
+
+
+        if (count($list) <= 8) {
+            return $list;
+        }
+
+        $headerIconCount = 7;
+        // move active item to last position
+        if($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();
+        return self::proceedNavigation($entries);
+    }
+
+    /**
+     * 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();
+        return self::proceedAppNavigation($entries);
+    }
+
+    /**
+     * 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() {
+        $entries = OC::$server->getNavigationManager()->getAll('settings');
+        return self::proceedNavigation($entries);
+    }
+
+    /**
+     * 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);
+            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);
+
+        $dispatcher = OC::$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 +65 added lines, -65 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, $path);
 			}
 		}
@@ -138,15 +138,15 @@ 
 	public static function loadApp($app) {
 		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: '.$app);
 			self::requireAppFile($app);
 			if (self::isType($app, array('authentication'))) {
 				// since authentication apps affect the "is app enabled for group" check,
@@ -155,7 +155,7 @@ 
 				// enabled for groups
 				self::$enabledAppsCache = array();
 			}
-			\OC::$server->getEventLogger()->end('load_app_' . $app);
+			\OC::$server->getEventLogger()->end('load_app_'.$app);
 		}
 
 		$info = self::getAppInfo($app);
@@ -182,17 +182,17 @@ 
 	 * @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::$server->registerNamespace($app, $appNamespace);
-		\OC::$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
@@ -207,7 +207,7 @@ 
 	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();
@@ -261,7 +261,7 @@ 
 	 */
 	public static function setAppTypes($app) {
 		$appData = self::getAppInfo($app);
-		if(!is_array($appData)) {
+		if (!is_array($appData)) {
 			return;
 		}
 
@@ -325,8 +325,8 @@ 
 		} 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');
@@ -370,7 +370,7 @@ 
 		);
 		$isDownloaded = $installer->isDownloaded($appId);
 
-		if(!$isDownloaded) {
+		if (!$isDownloaded) {
 			$installer->downloadApp($appId);
 		}
 
@@ -408,7 +408,7 @@ 
 		}
 
 		$info = self::getAppInfo($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']);
@@ -487,15 +487,15 @@ 
 		}
 
 		$headerIconCount = 7;
-		if($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) {
-			if($index >= $headerIconCount) {
+			if ($index >= $headerIconCount) {
 				$navEntry['showInHeader'] = false;
 			}
 		}
@@ -524,10 +524,10 @@ 
 
 		$headerIconCount = 7;
 		// move active item to last position
-		if($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, $headerIconCount);
@@ -564,7 +564,7 @@ 
 	 */
 	public static function findAppInDirectories($appId) {
 		$sanitizedAppId = self::cleanAppId($appId);
-		if($sanitizedAppId !== $appId) {
+		if ($sanitizedAppId !== $appId) {
 			return false;
 		}
 		static $app_dir = array();
@@ -575,7 +575,7 @@ 
 
 		$possibleApps = array();
 		foreach (OC::$APPSROOTS as $dir) {
-			if (file_exists($dir['path'] . '/' . $appId)) {
+			if (file_exists($dir['path'].'/'.$appId)) {
 				$possibleApps[] = $dir;
 			}
 		}
@@ -616,7 +616,7 @@ 
 		}
 
 		if (($dir = self::findAppInDirectories($appId)) != false) {
-			return $dir['path'] . '/' . $appId;
+			return $dir['path'].'/'.$appId;
 		}
 		return false;
 	}
@@ -630,7 +630,7 @@ 
 	 */
 	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;
 	}
@@ -643,7 +643,7 @@ 
 	 * @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];
 		}
 
@@ -659,7 +659,7 @@ 
 	 * @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']) ? $appData['version'] : '';
 	}
@@ -682,10 +682,10 @@ 
 				return self::$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'));
@@ -694,9 +694,9 @@ 
 		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;
 			}
 		}
@@ -803,7 +803,7 @@ 
 	 * @param string $page
 	 */
 	public static function registerAdmin($app, $page) {
-		self::$adminForms[] = $app . '/' . $page . '.php';
+		self::$adminForms[] = $app.'/'.$page.'.php';
 	}
 
 	/**
@@ -812,7 +812,7 @@ 
 	 * @param string $page
 	 */
 	public static function registerPersonal($app, $page) {
-		self::$personalForms[] = $app . '/' . $page . '.php';
+		self::$personalForms[] = $app.'/'.$page.'.php';
 	}
 
 	/**
@@ -841,7 +841,7 @@ 
 
 		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']);
@@ -849,7 +849,7 @@ 
 			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;
 					}
@@ -879,12 +879,12 @@ 
 
 				$info = OC_App::getAppInfo($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;
 				}
 
@@ -911,13 +911,13 @@ 
 				}
 
 				$appPath = self::getAppPath($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');
 							$info['previewAsIcon'] = true;
@@ -951,9 +951,9 @@ 
 	 * @return string|false
 	 */
 	public static function getInternalAppIdByOcs($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);
 			}
 		}
@@ -1057,7 +1057,7 @@ 
 	public static function getAppVersions() {
 		static $versions;
 
-		if(!$versions) {
+		if (!$versions) {
 			$appConfig = \OC::$server->getAppConfig();
 			$versions = $appConfig->getValues(false, 'installed_version');
 		}
@@ -1079,7 +1079,7 @@ 
 		if ($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']]
@@ -1104,7 +1104,7 @@ 
 				$config->setAppValue($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']);
@@ -1112,7 +1112,7 @@ 
 
 			\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!", $appName));
@@ -1130,24 +1130,24 @@ 
 	 */
 	public static function updateApp($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);
-			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']);
@@ -1156,14 +1156,14 @@ 
 		//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($appId);
@@ -1233,17 +1233,17 @@ 
 	public static function getStorage($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;
 		}
 	}
@@ -1275,9 +1275,9 @@ 
 
 				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 {
@@ -1312,7 +1312,7 @@ 
 			$data['description'] = trim(self::findBestL10NOption($data['description'], $lang));
 		} else if (isset($data['description']) && is_string($data['description'])) {
 			$data['description'] = trim($data['description']);
-		} else  {
+		} else {
 			$data['description'] = '';
 		}
 

lib/private/L10N/Factory.php

Doc Comments +5 added lines

@@ -318,6 +318,11 @@
 	 */
 	// FIXME This method is only public, until OC_L10N does not need it anymore,
 	// FIXME This is also the reason, why it is not in the public interface
+
+	/**
+	 * @param string $app
+	 * @param string $lang
+	 */
 	public function getL10nFilesForApp($app, $lang) {
 		$languageFiles = [];
 

Spacing +25 added lines, -25 removed lines

@@ -131,9 +131,9 @@ 
 		 *
 		 * @link https://github.com/owncloud/core/issues/21955
 		 */
-		if($this->config->getSystemValue('installed', false)) {
-			$userId = !is_null($this->userSession->getUser()) ? $this->userSession->getUser()->getUID() :  null;
-			if(!is_null($userId)) {
+		if ($this->config->getSystemValue('installed', false)) {
+			$userId = !is_null($this->userSession->getUser()) ? $this->userSession->getUser()->getUID() : null;
+			if (!is_null($userId)) {
 				$userLang = $this->config->getUserValue($userId, 'core', 'lang', null);
 			} else {
 				$userLang = null;
@@ -202,7 +202,7 @@ 
 		// merge with translations from theme
 		$theme = $this->config->getSystemValue('theme');
 		if (!empty($theme)) {
-			$themeDir = $this->serverRoot . '/themes/' . $theme . substr($dir, strlen($this->serverRoot));
+			$themeDir = $this->serverRoot.'/themes/'.$theme.substr($dir, strlen($this->serverRoot));
 
 			if (is_dir($themeDir)) {
 				$files = scandir($themeDir);
@@ -297,7 +297,7 @@ 
 	 */
 	private function isSubDirectory($sub, $parent) {
 		// Check whether $sub contains no ".."
-		if(strpos($sub, '..') !== false) {
+		if (strpos($sub, '..') !== false) {
 			return false;
 		}
 
@@ -322,12 +322,12 @@ 
 		$languageFiles = [];
 
 		$i18nDir = $this->findL10nDir($app);
-		$transFile = strip_tags($i18nDir) . strip_tags($lang) . '.json';
+		$transFile = strip_tags($i18nDir).strip_tags($lang).'.json';
 
-		if (($this->isSubDirectory($transFile, $this->serverRoot . '/core/l10n/')
-				|| $this->isSubDirectory($transFile, $this->serverRoot . '/lib/l10n/')
-				|| $this->isSubDirectory($transFile, $this->serverRoot . '/settings/l10n/')
-				|| $this->isSubDirectory($transFile, \OC_App::getAppPath($app) . '/l10n/')
+		if (($this->isSubDirectory($transFile, $this->serverRoot.'/core/l10n/')
+				|| $this->isSubDirectory($transFile, $this->serverRoot.'/lib/l10n/')
+				|| $this->isSubDirectory($transFile, $this->serverRoot.'/settings/l10n/')
+				|| $this->isSubDirectory($transFile, \OC_App::getAppPath($app).'/l10n/')
 			)
 			&& file_exists($transFile)) {
 			// load the translations file
@@ -337,7 +337,7 @@ 
 		// merge with translations from theme
 		$theme = $this->config->getSystemValue('theme');
 		if (!empty($theme)) {
-			$transFile = $this->serverRoot . '/themes/' . $theme . substr($transFile, strlen($this->serverRoot));
+			$transFile = $this->serverRoot.'/themes/'.$theme.substr($transFile, strlen($this->serverRoot));
 			if (file_exists($transFile)) {
 				$languageFiles[] = $transFile;
 			}
@@ -354,14 +354,14 @@ 
 	 */
 	protected function findL10nDir($app = null) {
 		if (in_array($app, ['core', 'lib', 'settings'])) {
-			if (file_exists($this->serverRoot . '/' . $app . '/l10n/')) {
-				return $this->serverRoot . '/' . $app . '/l10n/';
+			if (file_exists($this->serverRoot.'/'.$app.'/l10n/')) {
+				return $this->serverRoot.'/'.$app.'/l10n/';
 			}
 		} else if ($app && \OC_App::getAppPath($app) !== false) {
 			// Check if the app is in the app folder
-			return \OC_App::getAppPath($app) . '/l10n/';
+			return \OC_App::getAppPath($app).'/l10n/';
 		}
-		return $this->serverRoot . '/core/l10n/';
+		return $this->serverRoot.'/core/l10n/';
 	}
 
 
@@ -378,15 +378,15 @@ 
 			return $this->pluralFunctions[$string];
 		}
 
-		if (preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
+		if (preg_match('/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
 			// sanitize
-			$nplurals = preg_replace( '/[^0-9]/', '', $matches[1] );
-			$plural = preg_replace( '#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2] );
+			$nplurals = preg_replace('/[^0-9]/', '', $matches[1]);
+			$plural = preg_replace('#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2]);
 
 			$body = str_replace(
-				array( 'plural', 'n', '$n$plurals', ),
-				array( '$plural', '$n', '$nplurals', ),
-				'nplurals='. $nplurals . '; plural=' . $plural
+				array('plural', 'n', '$n$plurals',),
+				array('$plural', '$n', '$nplurals',),
+				'nplurals='.$nplurals.'; plural='.$plural
 			);
 
 			// add parents
@@ -394,9 +394,9 @@ 
 			$body .= ';';
 			$res = '';
 			$p = 0;
-			for($i = 0; $i < strlen($body); $i++) {
+			for ($i = 0; $i < strlen($body); $i++) {
 				$ch = $body[$i];
-				switch ( $ch ) {
+				switch ($ch) {
 					case '?':
 						$res .= ' ? (';
 						$p++;
@@ -405,7 +405,7 @@ 
 						$res .= ') : (';
 						break;
 					case ';':
-						$res .= str_repeat( ')', $p ) . ';';
+						$res .= str_repeat(')', $p).';';
 						$p = 0;
 						break;
 					default:
@@ -413,7 +413,7 @@ 
 				}
 			}
 
-			$body = $res . 'return ($plural>=$nplurals?$nplurals-1:$plural);';
+			$body = $res.'return ($plural>=$nplurals?$nplurals-1:$plural);';
 			$function = create_function('$n', $body);
 			$this->pluralFunctions[$string] = $function;
 			return $function;

Indentation +369 added lines, -369 removed lines

@@ -40,373 +40,373 @@
  */
 class Factory implements IFactory {
 
-	/** @var string */
-	protected $requestLanguage = '';
-
-	/**
-	 * cached instances
-	 * @var array Structure: Lang => App => \OCP\IL10N
-	 */
-	protected $instances = [];
-
-	/**
-	 * @var array Structure: App => string[]
-	 */
-	protected $availableLanguages = [];
-
-	/**
-	 * @var array Structure: string => callable
-	 */
-	protected $pluralFunctions = [];
-
-	/** @var IConfig */
-	protected $config;
-
-	/** @var IRequest */
-	protected $request;
-
-	/** @var IUserSession */
-	protected $userSession;
-
-	/** @var string */
-	protected $serverRoot;
-
-	/**
-	 * @param IConfig $config
-	 * @param IRequest $request
-	 * @param IUserSession $userSession
-	 * @param string $serverRoot
-	 */
-	public function __construct(IConfig $config,
-								IRequest $request,
-								IUserSession $userSession,
-								$serverRoot) {
-		$this->config = $config;
-		$this->request = $request;
-		$this->userSession = $userSession;
-		$this->serverRoot = $serverRoot;
-	}
-
-	/**
-	 * Get a language instance
-	 *
-	 * @param string $app
-	 * @param string|null $lang
-	 * @return \OCP\IL10N
-	 */
-	public function get($app, $lang = null) {
-		$app = \OC_App::cleanAppId($app);
-		if ($lang !== null) {
-			$lang = str_replace(array('\0', '/', '\\', '..'), '', (string) $lang);
-		}
-		if ($lang === null || !$this->languageExists($app, $lang)) {
-			$lang = $this->findLanguage($app);
-		}
-
-		if (!isset($this->instances[$lang][$app])) {
-			$this->instances[$lang][$app] = new L10N(
-				$this, $app, $lang,
-				$this->getL10nFilesForApp($app, $lang)
-			);
-		}
-
-		return $this->instances[$lang][$app];
-	}
-
-	/**
-	 * Find the best language
-	 *
-	 * @param string|null $app App id or null for core
-	 * @return string language If nothing works it returns 'en'
-	 */
-	public function findLanguage($app = null) {
-		if ($this->requestLanguage !== '' && $this->languageExists($app, $this->requestLanguage)) {
-			return $this->requestLanguage;
-		}
-
-		/**
-		 * At this point ownCloud might not yet be installed and thus the lookup
-		 * in the preferences table might fail. For this reason we need to check
-		 * whether the instance has already been installed
-		 *
-		 * @link https://github.com/owncloud/core/issues/21955
-		 */
-		if($this->config->getSystemValue('installed', false)) {
-			$userId = !is_null($this->userSession->getUser()) ? $this->userSession->getUser()->getUID() :  null;
-			if(!is_null($userId)) {
-				$userLang = $this->config->getUserValue($userId, 'core', 'lang', null);
-			} else {
-				$userLang = null;
-			}
-		} else {
-			$userId = null;
-			$userLang = null;
-		}
-
-		if ($userLang) {
-			$this->requestLanguage = $userLang;
-			if ($this->languageExists($app, $userLang)) {
-				return $userLang;
-			}
-		}
-
-		try {
-			// Try to get the language from the Request
-			$lang = $this->getLanguageFromRequest($app);
-			if ($userId !== null && $app === null && !$userLang) {
-				$this->config->setUserValue($userId, 'core', 'lang', $lang);
-			}
-			return $lang;
-		} catch (LanguageNotFoundException $e) {
-			// Finding language from request failed fall back to default language
-			$defaultLanguage = $this->config->getSystemValue('default_language', false);
-			if ($defaultLanguage !== false && $this->languageExists($app, $defaultLanguage)) {
-				return $defaultLanguage;
-			}
-		}
-
-		// We could not find any language so fall back to english
-		return 'en';
-	}
-
-	/**
-	 * Find all available languages for an app
-	 *
-	 * @param string|null $app App id or null for core
-	 * @return array an array of available languages
-	 */
-	public function findAvailableLanguages($app = null) {
-		$key = $app;
-		if ($key === null) {
-			$key = 'null';
-		}
-
-		// also works with null as key
-		if (!empty($this->availableLanguages[$key])) {
-			return $this->availableLanguages[$key];
-		}
-
-		$available = ['en']; //english is always available
-		$dir = $this->findL10nDir($app);
-		if (is_dir($dir)) {
-			$files = scandir($dir);
-			if ($files !== false) {
-				foreach ($files as $file) {
-					if (substr($file, -5) === '.json' && substr($file, 0, 4) !== 'l10n') {
-						$available[] = substr($file, 0, -5);
-					}
-				}
-			}
-		}
-
-		// merge with translations from theme
-		$theme = $this->config->getSystemValue('theme');
-		if (!empty($theme)) {
-			$themeDir = $this->serverRoot . '/themes/' . $theme . substr($dir, strlen($this->serverRoot));
-
-			if (is_dir($themeDir)) {
-				$files = scandir($themeDir);
-				if ($files !== false) {
-					foreach ($files as $file) {
-						if (substr($file, -5) === '.json' && substr($file, 0, 4) !== 'l10n') {
-							$available[] = substr($file, 0, -5);
-						}
-					}
-				}
-			}
-		}
-
-		$this->availableLanguages[$key] = $available;
-		return $available;
-	}
-
-	/**
-	 * @param string|null $app App id or null for core
-	 * @param string $lang
-	 * @return bool
-	 */
-	public function languageExists($app, $lang) {
-		if ($lang === 'en') {//english is always available
-			return true;
-		}
-
-		$languages = $this->findAvailableLanguages($app);
-		return array_search($lang, $languages) !== false;
-	}
-
-	/**
-	 * @param string|null $app
-	 * @return string
-	 * @throws LanguageNotFoundException
-	 */
-	private function getLanguageFromRequest($app) {
-		$header = $this->request->getHeader('ACCEPT_LANGUAGE');
-		if ($header) {
-			$available = $this->findAvailableLanguages($app);
-
-			// E.g. make sure that 'de' is before 'de_DE'.
-			sort($available);
-
-			$preferences = preg_split('/,\s*/', strtolower($header));
-			foreach ($preferences as $preference) {
-				list($preferred_language) = explode(';', $preference);
-				$preferred_language = str_replace('-', '_', $preferred_language);
-
-				foreach ($available as $available_language) {
-					if ($preferred_language === strtolower($available_language)) {
-						return $available_language;
-					}
-				}
-
-				// Fallback from de_De to de
-				foreach ($available as $available_language) {
-					if (substr($preferred_language, 0, 2) === $available_language) {
-						return $available_language;
-					}
-				}
-			}
-		}
-
-		throw new LanguageNotFoundException();
-	}
-
-	/**
-	 * Checks if $sub is a subdirectory of $parent
-	 *
-	 * @param string $sub
-	 * @param string $parent
-	 * @return bool
-	 */
-	private function isSubDirectory($sub, $parent) {
-		// Check whether $sub contains no ".."
-		if(strpos($sub, '..') !== false) {
-			return false;
-		}
-
-		// Check whether $sub is a subdirectory of $parent
-		if (strpos($sub, $parent) === 0) {
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * Get a list of language files that should be loaded
-	 *
-	 * @param string $app
-	 * @param string $lang
-	 * @return string[]
-	 */
-	// FIXME This method is only public, until OC_L10N does not need it anymore,
-	// FIXME This is also the reason, why it is not in the public interface
-	public function getL10nFilesForApp($app, $lang) {
-		$languageFiles = [];
-
-		$i18nDir = $this->findL10nDir($app);
-		$transFile = strip_tags($i18nDir) . strip_tags($lang) . '.json';
-
-		if (($this->isSubDirectory($transFile, $this->serverRoot . '/core/l10n/')
-				|| $this->isSubDirectory($transFile, $this->serverRoot . '/lib/l10n/')
-				|| $this->isSubDirectory($transFile, $this->serverRoot . '/settings/l10n/')
-				|| $this->isSubDirectory($transFile, \OC_App::getAppPath($app) . '/l10n/')
-			)
-			&& file_exists($transFile)) {
-			// load the translations file
-			$languageFiles[] = $transFile;
-		}
-
-		// merge with translations from theme
-		$theme = $this->config->getSystemValue('theme');
-		if (!empty($theme)) {
-			$transFile = $this->serverRoot . '/themes/' . $theme . substr($transFile, strlen($this->serverRoot));
-			if (file_exists($transFile)) {
-				$languageFiles[] = $transFile;
-			}
-		}
-
-		return $languageFiles;
-	}
-
-	/**
-	 * find the l10n directory
-	 *
-	 * @param string $app App id or empty string for core
-	 * @return string directory
-	 */
-	protected function findL10nDir($app = null) {
-		if (in_array($app, ['core', 'lib', 'settings'])) {
-			if (file_exists($this->serverRoot . '/' . $app . '/l10n/')) {
-				return $this->serverRoot . '/' . $app . '/l10n/';
-			}
-		} else if ($app && \OC_App::getAppPath($app) !== false) {
-			// Check if the app is in the app folder
-			return \OC_App::getAppPath($app) . '/l10n/';
-		}
-		return $this->serverRoot . '/core/l10n/';
-	}
-
-
-	/**
-	 * Creates a function from the plural string
-	 *
-	 * Parts of the code is copied from Habari:
-	 * https://github.com/habari/system/blob/master/classes/locale.php
-	 * @param string $string
-	 * @return string
-	 */
-	public function createPluralFunction($string) {
-		if (isset($this->pluralFunctions[$string])) {
-			return $this->pluralFunctions[$string];
-		}
-
-		if (preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
-			// sanitize
-			$nplurals = preg_replace( '/[^0-9]/', '', $matches[1] );
-			$plural = preg_replace( '#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2] );
-
-			$body = str_replace(
-				array( 'plural', 'n', '$n$plurals', ),
-				array( '$plural', '$n', '$nplurals', ),
-				'nplurals='. $nplurals . '; plural=' . $plural
-			);
-
-			// add parents
-			// important since PHP's ternary evaluates from left to right
-			$body .= ';';
-			$res = '';
-			$p = 0;
-			for($i = 0; $i < strlen($body); $i++) {
-				$ch = $body[$i];
-				switch ( $ch ) {
-					case '?':
-						$res .= ' ? (';
-						$p++;
-						break;
-					case ':':
-						$res .= ') : (';
-						break;
-					case ';':
-						$res .= str_repeat( ')', $p ) . ';';
-						$p = 0;
-						break;
-					default:
-						$res .= $ch;
-				}
-			}
-
-			$body = $res . 'return ($plural>=$nplurals?$nplurals-1:$plural);';
-			$function = create_function('$n', $body);
-			$this->pluralFunctions[$string] = $function;
-			return $function;
-		} else {
-			// default: one plural form for all cases but n==1 (english)
-			$function = create_function(
-				'$n',
-				'$nplurals=2;$plural=($n==1?0:1);return ($plural>=$nplurals?$nplurals-1:$plural);'
-			);
-			$this->pluralFunctions[$string] = $function;
-			return $function;
-		}
-	}
+    /** @var string */
+    protected $requestLanguage = '';
+
+    /**
+     * cached instances
+     * @var array Structure: Lang => App => \OCP\IL10N
+     */
+    protected $instances = [];
+
+    /**
+     * @var array Structure: App => string[]
+     */
+    protected $availableLanguages = [];
+
+    /**
+     * @var array Structure: string => callable
+     */
+    protected $pluralFunctions = [];
+
+    /** @var IConfig */
+    protected $config;
+
+    /** @var IRequest */
+    protected $request;
+
+    /** @var IUserSession */
+    protected $userSession;
+
+    /** @var string */
+    protected $serverRoot;
+
+    /**
+     * @param IConfig $config
+     * @param IRequest $request
+     * @param IUserSession $userSession
+     * @param string $serverRoot
+     */
+    public function __construct(IConfig $config,
+                                IRequest $request,
+                                IUserSession $userSession,
+                                $serverRoot) {
+        $this->config = $config;
+        $this->request = $request;
+        $this->userSession = $userSession;
+        $this->serverRoot = $serverRoot;
+    }
+
+    /**
+     * Get a language instance
+     *
+     * @param string $app
+     * @param string|null $lang
+     * @return \OCP\IL10N
+     */
+    public function get($app, $lang = null) {
+        $app = \OC_App::cleanAppId($app);
+        if ($lang !== null) {
+            $lang = str_replace(array('\0', '/', '\\', '..'), '', (string) $lang);
+        }
+        if ($lang === null || !$this->languageExists($app, $lang)) {
+            $lang = $this->findLanguage($app);
+        }
+
+        if (!isset($this->instances[$lang][$app])) {
+            $this->instances[$lang][$app] = new L10N(
+                $this, $app, $lang,
+                $this->getL10nFilesForApp($app, $lang)
+            );
+        }
+
+        return $this->instances[$lang][$app];
+    }
+
+    /**
+     * Find the best language
+     *
+     * @param string|null $app App id or null for core
+     * @return string language If nothing works it returns 'en'
+     */
+    public function findLanguage($app = null) {
+        if ($this->requestLanguage !== '' && $this->languageExists($app, $this->requestLanguage)) {
+            return $this->requestLanguage;
+        }
+
+        /**
+         * At this point ownCloud might not yet be installed and thus the lookup
+         * in the preferences table might fail. For this reason we need to check
+         * whether the instance has already been installed
+         *
+         * @link https://github.com/owncloud/core/issues/21955
+         */
+        if($this->config->getSystemValue('installed', false)) {
+            $userId = !is_null($this->userSession->getUser()) ? $this->userSession->getUser()->getUID() :  null;
+            if(!is_null($userId)) {
+                $userLang = $this->config->getUserValue($userId, 'core', 'lang', null);
+            } else {
+                $userLang = null;
+            }
+        } else {
+            $userId = null;
+            $userLang = null;
+        }
+
+        if ($userLang) {
+            $this->requestLanguage = $userLang;
+            if ($this->languageExists($app, $userLang)) {
+                return $userLang;
+            }
+        }
+
+        try {
+            // Try to get the language from the Request
+            $lang = $this->getLanguageFromRequest($app);
+            if ($userId !== null && $app === null && !$userLang) {
+                $this->config->setUserValue($userId, 'core', 'lang', $lang);
+            }
+            return $lang;
+        } catch (LanguageNotFoundException $e) {
+            // Finding language from request failed fall back to default language
+            $defaultLanguage = $this->config->getSystemValue('default_language', false);
+            if ($defaultLanguage !== false && $this->languageExists($app, $defaultLanguage)) {
+                return $defaultLanguage;
+            }
+        }
+
+        // We could not find any language so fall back to english
+        return 'en';
+    }
+
+    /**
+     * Find all available languages for an app
+     *
+     * @param string|null $app App id or null for core
+     * @return array an array of available languages
+     */
+    public function findAvailableLanguages($app = null) {
+        $key = $app;
+        if ($key === null) {
+            $key = 'null';
+        }
+
+        // also works with null as key
+        if (!empty($this->availableLanguages[$key])) {
+            return $this->availableLanguages[$key];
+        }
+
+        $available = ['en']; //english is always available
+        $dir = $this->findL10nDir($app);
+        if (is_dir($dir)) {
+            $files = scandir($dir);
+            if ($files !== false) {
+                foreach ($files as $file) {
+                    if (substr($file, -5) === '.json' && substr($file, 0, 4) !== 'l10n') {
+                        $available[] = substr($file, 0, -5);
+                    }
+                }
+            }
+        }
+
+        // merge with translations from theme
+        $theme = $this->config->getSystemValue('theme');
+        if (!empty($theme)) {
+            $themeDir = $this->serverRoot . '/themes/' . $theme . substr($dir, strlen($this->serverRoot));
+
+            if (is_dir($themeDir)) {
+                $files = scandir($themeDir);
+                if ($files !== false) {
+                    foreach ($files as $file) {
+                        if (substr($file, -5) === '.json' && substr($file, 0, 4) !== 'l10n') {
+                            $available[] = substr($file, 0, -5);
+                        }
+                    }
+                }
+            }
+        }
+
+        $this->availableLanguages[$key] = $available;
+        return $available;
+    }
+
+    /**
+     * @param string|null $app App id or null for core
+     * @param string $lang
+     * @return bool
+     */
+    public function languageExists($app, $lang) {
+        if ($lang === 'en') {//english is always available
+            return true;
+        }
+
+        $languages = $this->findAvailableLanguages($app);
+        return array_search($lang, $languages) !== false;
+    }
+
+    /**
+     * @param string|null $app
+     * @return string
+     * @throws LanguageNotFoundException
+     */
+    private function getLanguageFromRequest($app) {
+        $header = $this->request->getHeader('ACCEPT_LANGUAGE');
+        if ($header) {
+            $available = $this->findAvailableLanguages($app);
+
+            // E.g. make sure that 'de' is before 'de_DE'.
+            sort($available);
+
+            $preferences = preg_split('/,\s*/', strtolower($header));
+            foreach ($preferences as $preference) {
+                list($preferred_language) = explode(';', $preference);
+                $preferred_language = str_replace('-', '_', $preferred_language);
+
+                foreach ($available as $available_language) {
+                    if ($preferred_language === strtolower($available_language)) {
+                        return $available_language;
+                    }
+                }
+
+                // Fallback from de_De to de
+                foreach ($available as $available_language) {
+                    if (substr($preferred_language, 0, 2) === $available_language) {
+                        return $available_language;
+                    }
+                }
+            }
+        }
+
+        throw new LanguageNotFoundException();
+    }
+
+    /**
+     * Checks if $sub is a subdirectory of $parent
+     *
+     * @param string $sub
+     * @param string $parent
+     * @return bool
+     */
+    private function isSubDirectory($sub, $parent) {
+        // Check whether $sub contains no ".."
+        if(strpos($sub, '..') !== false) {
+            return false;
+        }
+
+        // Check whether $sub is a subdirectory of $parent
+        if (strpos($sub, $parent) === 0) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Get a list of language files that should be loaded
+     *
+     * @param string $app
+     * @param string $lang
+     * @return string[]
+     */
+    // FIXME This method is only public, until OC_L10N does not need it anymore,
+    // FIXME This is also the reason, why it is not in the public interface
+    public function getL10nFilesForApp($app, $lang) {
+        $languageFiles = [];
+
+        $i18nDir = $this->findL10nDir($app);
+        $transFile = strip_tags($i18nDir) . strip_tags($lang) . '.json';
+
+        if (($this->isSubDirectory($transFile, $this->serverRoot . '/core/l10n/')
+                || $this->isSubDirectory($transFile, $this->serverRoot . '/lib/l10n/')
+                || $this->isSubDirectory($transFile, $this->serverRoot . '/settings/l10n/')
+                || $this->isSubDirectory($transFile, \OC_App::getAppPath($app) . '/l10n/')
+            )
+            && file_exists($transFile)) {
+            // load the translations file
+            $languageFiles[] = $transFile;
+        }
+
+        // merge with translations from theme
+        $theme = $this->config->getSystemValue('theme');
+        if (!empty($theme)) {
+            $transFile = $this->serverRoot . '/themes/' . $theme . substr($transFile, strlen($this->serverRoot));
+            if (file_exists($transFile)) {
+                $languageFiles[] = $transFile;
+            }
+        }
+
+        return $languageFiles;
+    }
+
+    /**
+     * find the l10n directory
+     *
+     * @param string $app App id or empty string for core
+     * @return string directory
+     */
+    protected function findL10nDir($app = null) {
+        if (in_array($app, ['core', 'lib', 'settings'])) {
+            if (file_exists($this->serverRoot . '/' . $app . '/l10n/')) {
+                return $this->serverRoot . '/' . $app . '/l10n/';
+            }
+        } else if ($app && \OC_App::getAppPath($app) !== false) {
+            // Check if the app is in the app folder
+            return \OC_App::getAppPath($app) . '/l10n/';
+        }
+        return $this->serverRoot . '/core/l10n/';
+    }
+
+
+    /**
+     * Creates a function from the plural string
+     *
+     * Parts of the code is copied from Habari:
+     * https://github.com/habari/system/blob/master/classes/locale.php
+     * @param string $string
+     * @return string
+     */
+    public function createPluralFunction($string) {
+        if (isset($this->pluralFunctions[$string])) {
+            return $this->pluralFunctions[$string];
+        }
+
+        if (preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
+            // sanitize
+            $nplurals = preg_replace( '/[^0-9]/', '', $matches[1] );
+            $plural = preg_replace( '#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2] );
+
+            $body = str_replace(
+                array( 'plural', 'n', '$n$plurals', ),
+                array( '$plural', '$n', '$nplurals', ),
+                'nplurals='. $nplurals . '; plural=' . $plural
+            );
+
+            // add parents
+            // important since PHP's ternary evaluates from left to right
+            $body .= ';';
+            $res = '';
+            $p = 0;
+            for($i = 0; $i < strlen($body); $i++) {
+                $ch = $body[$i];
+                switch ( $ch ) {
+                    case '?':
+                        $res .= ' ? (';
+                        $p++;
+                        break;
+                    case ':':
+                        $res .= ') : (';
+                        break;
+                    case ';':
+                        $res .= str_repeat( ')', $p ) . ';';
+                        $p = 0;
+                        break;
+                    default:
+                        $res .= $ch;
+                }
+            }
+
+            $body = $res . 'return ($plural>=$nplurals?$nplurals-1:$plural);';
+            $function = create_function('$n', $body);
+            $this->pluralFunctions[$string] = $function;
+            return $function;
+        } else {
+            // default: one plural form for all cases but n==1 (english)
+            $function = create_function(
+                '$n',
+                '$nplurals=2;$plural=($n==1?0:1);return ($plural>=$nplurals?$nplurals-1:$plural);'
+            );
+            $this->pluralFunctions[$string] = $function;
+            return $function;
+        }
+    }
 }

lib/private/Installer.php

Unused Use Statements -1 removed lines

@@ -45,7 +45,6 @@
 use OC\App\CodeChecker\CodeChecker;
 use OC\App\CodeChecker\EmptyCheck;
 use OC\App\CodeChecker\PrivateCheck;
-use OC\Archive\Archive;
 use OC\Archive\TAR;
 use OC_App;
 use OC_DB;

Indentation +489 added lines, -489 removed lines

@@ -60,493 +60,493 @@
  * This class provides the functionality needed to install, update and remove apps
  */
 class Installer {
-	/** @var AppFetcher */
-	private $appFetcher;
-	/** @var IClientService */
-	private $clientService;
-	/** @var ITempManager */
-	private $tempManager;
-	/** @var ILogger */
-	private $logger;
-
-	/**
-	 * @param AppFetcher $appFetcher
-	 * @param IClientService $clientService
-	 * @param ITempManager $tempManager
-	 * @param ILogger $logger
-	 */
-	public function __construct(AppFetcher $appFetcher,
-								IClientService $clientService,
-								ITempManager $tempManager,
-								ILogger $logger) {
-		$this->appFetcher = $appFetcher;
-		$this->clientService = $clientService;
-		$this->tempManager = $tempManager;
-		$this->logger = $logger;
-	}
-
-	/**
-	 * Installs an app that is located in one of the app folders already
-	 *
-	 * @param string $appId App to install
-	 * @throws \Exception
-	 * @return integer
-	 */
-	public function installApp($appId) {
-		$app = \OC_App::findAppInDirectories($appId);
-		if($app === false) {
-			throw new \Exception('App not found in any app directory');
-		}
-
-		$basedir = $app['path'].'/'.$appId;
-		$info = OC_App::getAppInfo($basedir.'/appinfo/info.xml', true);
-
-		//install the database
-		if(is_file($basedir.'/appinfo/database.xml')) {
-			if (\OC::$server->getAppConfig()->getValue($info['id'], 'installed_version') === null) {
-				OC_DB::createDbFromStructure($basedir.'/appinfo/database.xml');
-			} else {
-				OC_DB::updateDbFromStructure($basedir.'/appinfo/database.xml');
-			}
-		}
-
-		\OC_App::setupBackgroundJobs($info['background-jobs']);
-
-		//run appinfo/install.php
-		if((!isset($data['noinstall']) or $data['noinstall']==false)) {
-			self::includeAppScript($basedir . '/appinfo/install.php');
-		}
-
-		$appData = OC_App::getAppInfo($appId);
-		OC_App::executeRepairSteps($appId, $appData['repair-steps']['install']);
-
-		//set the installed version
-		\OC::$server->getConfig()->setAppValue($info['id'], 'installed_version', OC_App::getAppVersion($info['id'], false));
-		\OC::$server->getConfig()->setAppValue($info['id'], 'enabled', 'no');
-
-		//set remote/public handlers
-		foreach($info['remote'] as $name=>$path) {
-			\OC::$server->getConfig()->setAppValue('core', 'remote_'.$name, $info['id'].'/'.$path);
-		}
-		foreach($info['public'] as $name=>$path) {
-			\OC::$server->getConfig()->setAppValue('core', 'public_'.$name, $info['id'].'/'.$path);
-		}
-
-		OC_App::setAppTypes($info['id']);
-
-		return $info['id'];
-	}
-
-	/**
-	 * @brief checks whether or not an app is installed
-	 * @param string $app app
-	 * @returns bool
-	 *
-	 * Checks whether or not an app is installed, i.e. registered in apps table.
-	 */
-	public static function isInstalled( $app ) {
-		return (\OC::$server->getConfig()->getAppValue($app, "installed_version", null) !== null);
-	}
-
-	/**
-	 * Updates the specified app from the appstore
-	 *
-	 * @param string $appId
-	 * @return bool
-	 */
-	public function updateAppstoreApp($appId) {
-		if(self::isUpdateAvailable($appId, $this->appFetcher)) {
-			try {
-				$this->downloadApp($appId);
-			} catch (\Exception $e) {
-				$this->logger->error($e->getMessage(), ['app' => 'core']);
-				return false;
-			}
-			return OC_App::updateApp($appId);
-		}
-
-		return false;
-	}
-
-	/**
-	 * Downloads an app and puts it into the app directory
-	 *
-	 * @param string $appId
-	 *
-	 * @throws \Exception If the installation was not successful
-	 */
-	public function downloadApp($appId) {
-		$appId = strtolower($appId);
-
-		$apps = $this->appFetcher->get();
-		foreach($apps as $app) {
-			if($app['id'] === $appId) {
-				// Load the certificate
-				$certificate = new X509();
-				$certificate->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
-				$loadedCertificate = $certificate->loadX509($app['certificate']);
-
-				// Verify if the certificate has been revoked
-				$crl = new X509();
-				$crl->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
-				$crl->loadCRL(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crl'));
-				if($crl->validateSignature() !== true) {
-					throw new \Exception('Could not validate CRL signature');
-				}
-				$csn = $loadedCertificate['tbsCertificate']['serialNumber']->toString();
-				$revoked = $crl->getRevoked($csn);
-				if ($revoked !== false) {
-					throw new \Exception(
-						sprintf(
-							'Certificate "%s" has been revoked',
-							$csn
-						)
-					);
-				}
-
-				// Verify if the certificate has been issued by the Nextcloud Code Authority CA
-				if($certificate->validateSignature() !== true) {
-					throw new \Exception(
-						sprintf(
-							'App with id %s has a certificate not issued by a trusted Code Signing Authority',
-							$appId
-						)
-					);
-				}
-
-				// Verify if the certificate is issued for the requested app id
-				$certInfo = openssl_x509_parse($app['certificate']);
-				if(!isset($certInfo['subject']['CN'])) {
-					throw new \Exception(
-						sprintf(
-							'App with id %s has a cert with no CN',
-							$appId
-						)
-					);
-				}
-				if($certInfo['subject']['CN'] !== $appId) {
-					throw new \Exception(
-						sprintf(
-							'App with id %s has a cert issued to %s',
-							$appId,
-							$certInfo['subject']['CN']
-						)
-					);
-				}
-
-				// Download the release
-				$tempFile = $this->tempManager->getTemporaryFile('.tar.gz');
-				$client = $this->clientService->newClient();
-				$client->get($app['releases'][0]['download'], ['save_to' => $tempFile]);
-
-				// Check if the signature actually matches the downloaded content
-				$certificate = openssl_get_publickey($app['certificate']);
-				$verified = (bool)openssl_verify(file_get_contents($tempFile), base64_decode($app['releases'][0]['signature']), $certificate, OPENSSL_ALGO_SHA512);
-				openssl_free_key($certificate);
-
-				if($verified === true) {
-					// Seems to match, let's proceed
-					$extractDir = $this->tempManager->getTemporaryFolder();
-					$archive = new TAR($tempFile);
-
-					if($archive) {
-						$archive->extract($extractDir);
-						$allFiles = scandir($extractDir);
-						$folders = array_diff($allFiles, ['.', '..']);
-						$folders = array_values($folders);
-
-						if(count($folders) > 1) {
-							throw new \Exception(
-								sprintf(
-									'Extracted app %s has more than 1 folder',
-									$appId
-								)
-							);
-						}
-
-						// Check if appinfo/info.xml has the same app ID as well
-						$loadEntities = libxml_disable_entity_loader(false);
-						$xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml');
-						libxml_disable_entity_loader($loadEntities);
-						if((string)$xml->id !== $appId) {
-							throw new \Exception(
-								sprintf(
-									'App for id %s has a wrong app ID in info.xml: %s',
-									$appId,
-									(string)$xml->id
-								)
-							);
-						}
-
-						// Check if the version is lower than before
-						$currentVersion = OC_App::getAppVersion($appId);
-						$newVersion = (string)$xml->version;
-						if(version_compare($currentVersion, $newVersion) === 1) {
-							throw new \Exception(
-								sprintf(
-									'App for id %s has version %s and tried to update to lower version %s',
-									$appId,
-									$currentVersion,
-									$newVersion
-								)
-							);
-						}
-
-						$baseDir = OC_App::getInstallPath() . '/' . $appId;
-						// Remove old app with the ID if existent
-						OC_Helper::rmdirr($baseDir);
-						// Move to app folder
-						if(@mkdir($baseDir)) {
-							$extractDir .= '/' . $folders[0];
-							OC_Helper::copyr($extractDir, $baseDir);
-						}
-						OC_Helper::copyr($extractDir, $baseDir);
-						OC_Helper::rmdirr($extractDir);
-						return;
-					} else {
-						throw new \Exception(
-							sprintf(
-								'Could not extract app with ID %s to %s',
-								$appId,
-								$extractDir
-							)
-						);
-					}
-				} else {
-					// Signature does not match
-					throw new \Exception(
-						sprintf(
-							'App with id %s has invalid signature',
-							$appId
-						)
-					);
-				}
-			}
-		}
-
-		throw new \Exception(
-			sprintf(
-				'Could not download app %s',
-				$appId
-			)
-		);
-	}
-
-	/**
-	 * Check if an update for the app is available
-	 *
-	 * @param string $appId
-	 * @param AppFetcher $appFetcher
-	 * @return string|false false or the version number of the update
-	 */
-	public static function isUpdateAvailable($appId,
-									  AppFetcher $appFetcher) {
-		static $isInstanceReadyForUpdates = null;
-
-		if ($isInstanceReadyForUpdates === null) {
-			$installPath = OC_App::getInstallPath();
-			if ($installPath === false || $installPath === null) {
-				$isInstanceReadyForUpdates = false;
-			} else {
-				$isInstanceReadyForUpdates = true;
-			}
-		}
-
-		if ($isInstanceReadyForUpdates === false) {
-			return false;
-		}
-
-		$apps = $appFetcher->get();
-		foreach($apps as $app) {
-			if($app['id'] === $appId) {
-				$currentVersion = OC_App::getAppVersion($appId);
-				$newestVersion = $app['releases'][0]['version'];
-				if (version_compare($newestVersion, $currentVersion, '>')) {
-					return $newestVersion;
-				} else {
-					return false;
-				}
-			}
-		}
-
-		return false;
-	}
-
-	/**
-	 * Check if app is already downloaded
-	 * @param string $name name of the application to remove
-	 * @return boolean
-	 *
-	 * The function will check if the app is already downloaded in the apps repository
-	 */
-	public function isDownloaded($name) {
-		foreach(\OC::$APPSROOTS as $dir) {
-			$dirToTest  = $dir['path'];
-			$dirToTest .= '/';
-			$dirToTest .= $name;
-			$dirToTest .= '/';
-
-			if (is_dir($dirToTest)) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
-	/**
-	 * Removes an app
-	 * @param string $appId ID of the application to remove
-	 * @return boolean
-	 *
-	 *
-	 * This function works as follows
-	 *   -# call uninstall repair steps
-	 *   -# removing the files
-	 *
-	 * The function will not delete preferences, tables and the configuration,
-	 * this has to be done by the function oc_app_uninstall().
-	 */
-	public function removeApp($appId) {
-		if($this->isDownloaded( $appId )) {
-			$appDir = OC_App::getInstallPath() . '/' . $appId;
-			OC_Helper::rmdirr($appDir);
-			return true;
-		}else{
-			\OCP\Util::writeLog('core', 'can\'t remove app '.$appId.'. It is not installed.', \OCP\Util::ERROR);
-
-			return false;
-		}
-
-	}
-
-	/**
-	 * Installs shipped apps
-	 *
-	 * This function installs all apps found in the 'apps' directory that should be enabled by default;
-	 * @param bool $softErrors When updating we ignore errors and simply log them, better to have a
-	 *                         working ownCloud at the end instead of an aborted update.
-	 * @return array Array of error messages (appid => Exception)
-	 */
-	public static function installShippedApps($softErrors = false) {
-		$errors = [];
-		foreach(\OC::$APPSROOTS as $app_dir) {
-			if($dir = opendir( $app_dir['path'] )) {
-				while( false !== ( $filename = readdir( $dir ))) {
-					if( substr( $filename, 0, 1 ) != '.' and is_dir($app_dir['path']."/$filename") ) {
-						if( file_exists( $app_dir['path']."/$filename/appinfo/info.xml" )) {
-							if(!Installer::isInstalled($filename)) {
-								$info=OC_App::getAppInfo($filename);
-								$enabled = isset($info['default_enable']);
-								if (($enabled || in_array($filename, \OC::$server->getAppManager()->getAlwaysEnabledApps()))
-									  && \OC::$server->getConfig()->getAppValue($filename, 'enabled') !== 'no') {
-									if ($softErrors) {
-										try {
-											Installer::installShippedApp($filename);
-										} catch (HintException $e) {
-											if ($e->getPrevious() instanceof TableExistsException) {
-												$errors[$filename] = $e;
-												continue;
-											}
-											throw $e;
-										}
-									} else {
-										Installer::installShippedApp($filename);
-									}
-									\OC::$server->getConfig()->setAppValue($filename, 'enabled', 'yes');
-								}
-							}
-						}
-					}
-				}
-				closedir( $dir );
-			}
-		}
-
-		return $errors;
-	}
-
-	/**
-	 * install an app already placed in the app folder
-	 * @param string $app id of the app to install
-	 * @return integer
-	 */
-	public static function installShippedApp($app) {
-		//install the database
-		$appPath = OC_App::getAppPath($app);
-		if(is_file("$appPath/appinfo/database.xml")) {
-			try {
-				OC_DB::createDbFromStructure("$appPath/appinfo/database.xml");
-			} catch (TableExistsException $e) {
-				throw new HintException(
-					'Failed to enable app ' . $app,
-					'Please ask for help via one of our <a href="https://nextcloud.com/support/" target="_blank" rel="noreferrer">support channels</a>.',
-					0, $e
-				);
-			}
-		}
-
-		//run appinfo/install.php
-		\OC_App::registerAutoloading($app, $appPath);
-		self::includeAppScript("$appPath/appinfo/install.php");
-
-		$info = OC_App::getAppInfo($app);
-		if (is_null($info)) {
-			return false;
-		}
-		\OC_App::setupBackgroundJobs($info['background-jobs']);
-
-		OC_App::executeRepairSteps($app, $info['repair-steps']['install']);
-
-		$config = \OC::$server->getConfig();
-
-		$config->setAppValue($app, 'installed_version', OC_App::getAppVersion($app));
-		if (array_key_exists('ocsid', $info)) {
-			$config->setAppValue($app, 'ocsid', $info['ocsid']);
-		}
-
-		//set remote/public handlers
-		foreach($info['remote'] as $name=>$path) {
-			$config->setAppValue('core', 'remote_'.$name, $app.'/'.$path);
-		}
-		foreach($info['public'] as $name=>$path) {
-			$config->setAppValue('core', 'public_'.$name, $app.'/'.$path);
-		}
-
-		OC_App::setAppTypes($info['id']);
-
-		if(isset($info['settings']) && is_array($info['settings'])) {
-			// requires that autoloading was registered for the app,
-			// as happens before running the install.php some lines above
-			\OC::$server->getSettingsManager()->setupSettings($info['settings']);
-		}
-
-		return $info['id'];
-	}
-
-	/**
-	 * check the code of an app with some static code checks
-	 * @param string $folder the folder of the app to check
-	 * @return boolean true for app is o.k. and false for app is not o.k.
-	 */
-	public static function checkCode($folder) {
-		// is the code checker enabled?
-		if(!\OC::$server->getConfig()->getSystemValue('appcodechecker', false)) {
-			return true;
-		}
-
-		$codeChecker = new CodeChecker(new PrivateCheck(new EmptyCheck()));
-		$errors = $codeChecker->analyseFolder(basename($folder), $folder);
-
-		return empty($errors);
-	}
-
-	/**
-	 * @param string $script
-	 */
-	private static function includeAppScript($script) {
-		if ( file_exists($script) ){
-			include $script;
-		}
-	}
+    /** @var AppFetcher */
+    private $appFetcher;
+    /** @var IClientService */
+    private $clientService;
+    /** @var ITempManager */
+    private $tempManager;
+    /** @var ILogger */
+    private $logger;
+
+    /**
+     * @param AppFetcher $appFetcher
+     * @param IClientService $clientService
+     * @param ITempManager $tempManager
+     * @param ILogger $logger
+     */
+    public function __construct(AppFetcher $appFetcher,
+                                IClientService $clientService,
+                                ITempManager $tempManager,
+                                ILogger $logger) {
+        $this->appFetcher = $appFetcher;
+        $this->clientService = $clientService;
+        $this->tempManager = $tempManager;
+        $this->logger = $logger;
+    }
+
+    /**
+     * Installs an app that is located in one of the app folders already
+     *
+     * @param string $appId App to install
+     * @throws \Exception
+     * @return integer
+     */
+    public function installApp($appId) {
+        $app = \OC_App::findAppInDirectories($appId);
+        if($app === false) {
+            throw new \Exception('App not found in any app directory');
+        }
+
+        $basedir = $app['path'].'/'.$appId;
+        $info = OC_App::getAppInfo($basedir.'/appinfo/info.xml', true);
+
+        //install the database
+        if(is_file($basedir.'/appinfo/database.xml')) {
+            if (\OC::$server->getAppConfig()->getValue($info['id'], 'installed_version') === null) {
+                OC_DB::createDbFromStructure($basedir.'/appinfo/database.xml');
+            } else {
+                OC_DB::updateDbFromStructure($basedir.'/appinfo/database.xml');
+            }
+        }
+
+        \OC_App::setupBackgroundJobs($info['background-jobs']);
+
+        //run appinfo/install.php
+        if((!isset($data['noinstall']) or $data['noinstall']==false)) {
+            self::includeAppScript($basedir . '/appinfo/install.php');
+        }
+
+        $appData = OC_App::getAppInfo($appId);
+        OC_App::executeRepairSteps($appId, $appData['repair-steps']['install']);
+
+        //set the installed version
+        \OC::$server->getConfig()->setAppValue($info['id'], 'installed_version', OC_App::getAppVersion($info['id'], false));
+        \OC::$server->getConfig()->setAppValue($info['id'], 'enabled', 'no');
+
+        //set remote/public handlers
+        foreach($info['remote'] as $name=>$path) {
+            \OC::$server->getConfig()->setAppValue('core', 'remote_'.$name, $info['id'].'/'.$path);
+        }
+        foreach($info['public'] as $name=>$path) {
+            \OC::$server->getConfig()->setAppValue('core', 'public_'.$name, $info['id'].'/'.$path);
+        }
+
+        OC_App::setAppTypes($info['id']);
+
+        return $info['id'];
+    }
+
+    /**
+     * @brief checks whether or not an app is installed
+     * @param string $app app
+     * @returns bool
+     *
+     * Checks whether or not an app is installed, i.e. registered in apps table.
+     */
+    public static function isInstalled( $app ) {
+        return (\OC::$server->getConfig()->getAppValue($app, "installed_version", null) !== null);
+    }
+
+    /**
+     * Updates the specified app from the appstore
+     *
+     * @param string $appId
+     * @return bool
+     */
+    public function updateAppstoreApp($appId) {
+        if(self::isUpdateAvailable($appId, $this->appFetcher)) {
+            try {
+                $this->downloadApp($appId);
+            } catch (\Exception $e) {
+                $this->logger->error($e->getMessage(), ['app' => 'core']);
+                return false;
+            }
+            return OC_App::updateApp($appId);
+        }
+
+        return false;
+    }
+
+    /**
+     * Downloads an app and puts it into the app directory
+     *
+     * @param string $appId
+     *
+     * @throws \Exception If the installation was not successful
+     */
+    public function downloadApp($appId) {
+        $appId = strtolower($appId);
+
+        $apps = $this->appFetcher->get();
+        foreach($apps as $app) {
+            if($app['id'] === $appId) {
+                // Load the certificate
+                $certificate = new X509();
+                $certificate->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
+                $loadedCertificate = $certificate->loadX509($app['certificate']);
+
+                // Verify if the certificate has been revoked
+                $crl = new X509();
+                $crl->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
+                $crl->loadCRL(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crl'));
+                if($crl->validateSignature() !== true) {
+                    throw new \Exception('Could not validate CRL signature');
+                }
+                $csn = $loadedCertificate['tbsCertificate']['serialNumber']->toString();
+                $revoked = $crl->getRevoked($csn);
+                if ($revoked !== false) {
+                    throw new \Exception(
+                        sprintf(
+                            'Certificate "%s" has been revoked',
+                            $csn
+                        )
+                    );
+                }
+
+                // Verify if the certificate has been issued by the Nextcloud Code Authority CA
+                if($certificate->validateSignature() !== true) {
+                    throw new \Exception(
+                        sprintf(
+                            'App with id %s has a certificate not issued by a trusted Code Signing Authority',
+                            $appId
+                        )
+                    );
+                }
+
+                // Verify if the certificate is issued for the requested app id
+                $certInfo = openssl_x509_parse($app['certificate']);
+                if(!isset($certInfo['subject']['CN'])) {
+                    throw new \Exception(
+                        sprintf(
+                            'App with id %s has a cert with no CN',
+                            $appId
+                        )
+                    );
+                }
+                if($certInfo['subject']['CN'] !== $appId) {
+                    throw new \Exception(
+                        sprintf(
+                            'App with id %s has a cert issued to %s',
+                            $appId,
+                            $certInfo['subject']['CN']
+                        )
+                    );
+                }
+
+                // Download the release
+                $tempFile = $this->tempManager->getTemporaryFile('.tar.gz');
+                $client = $this->clientService->newClient();
+                $client->get($app['releases'][0]['download'], ['save_to' => $tempFile]);
+
+                // Check if the signature actually matches the downloaded content
+                $certificate = openssl_get_publickey($app['certificate']);
+                $verified = (bool)openssl_verify(file_get_contents($tempFile), base64_decode($app['releases'][0]['signature']), $certificate, OPENSSL_ALGO_SHA512);
+                openssl_free_key($certificate);
+
+                if($verified === true) {
+                    // Seems to match, let's proceed
+                    $extractDir = $this->tempManager->getTemporaryFolder();
+                    $archive = new TAR($tempFile);
+
+                    if($archive) {
+                        $archive->extract($extractDir);
+                        $allFiles = scandir($extractDir);
+                        $folders = array_diff($allFiles, ['.', '..']);
+                        $folders = array_values($folders);
+
+                        if(count($folders) > 1) {
+                            throw new \Exception(
+                                sprintf(
+                                    'Extracted app %s has more than 1 folder',
+                                    $appId
+                                )
+                            );
+                        }
+
+                        // Check if appinfo/info.xml has the same app ID as well
+                        $loadEntities = libxml_disable_entity_loader(false);
+                        $xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml');
+                        libxml_disable_entity_loader($loadEntities);
+                        if((string)$xml->id !== $appId) {
+                            throw new \Exception(
+                                sprintf(
+                                    'App for id %s has a wrong app ID in info.xml: %s',
+                                    $appId,
+                                    (string)$xml->id
+                                )
+                            );
+                        }
+
+                        // Check if the version is lower than before
+                        $currentVersion = OC_App::getAppVersion($appId);
+                        $newVersion = (string)$xml->version;
+                        if(version_compare($currentVersion, $newVersion) === 1) {
+                            throw new \Exception(
+                                sprintf(
+                                    'App for id %s has version %s and tried to update to lower version %s',
+                                    $appId,
+                                    $currentVersion,
+                                    $newVersion
+                                )
+                            );
+                        }
+
+                        $baseDir = OC_App::getInstallPath() . '/' . $appId;
+                        // Remove old app with the ID if existent
+                        OC_Helper::rmdirr($baseDir);
+                        // Move to app folder
+                        if(@mkdir($baseDir)) {
+                            $extractDir .= '/' . $folders[0];
+                            OC_Helper::copyr($extractDir, $baseDir);
+                        }
+                        OC_Helper::copyr($extractDir, $baseDir);
+                        OC_Helper::rmdirr($extractDir);
+                        return;
+                    } else {
+                        throw new \Exception(
+                            sprintf(
+                                'Could not extract app with ID %s to %s',
+                                $appId,
+                                $extractDir
+                            )
+                        );
+                    }
+                } else {
+                    // Signature does not match
+                    throw new \Exception(
+                        sprintf(
+                            'App with id %s has invalid signature',
+                            $appId
+                        )
+                    );
+                }
+            }
+        }
+
+        throw new \Exception(
+            sprintf(
+                'Could not download app %s',
+                $appId
+            )
+        );
+    }
+
+    /**
+     * Check if an update for the app is available
+     *
+     * @param string $appId
+     * @param AppFetcher $appFetcher
+     * @return string|false false or the version number of the update
+     */
+    public static function isUpdateAvailable($appId,
+                                        AppFetcher $appFetcher) {
+        static $isInstanceReadyForUpdates = null;
+
+        if ($isInstanceReadyForUpdates === null) {
+            $installPath = OC_App::getInstallPath();
+            if ($installPath === false || $installPath === null) {
+                $isInstanceReadyForUpdates = false;
+            } else {
+                $isInstanceReadyForUpdates = true;
+            }
+        }
+
+        if ($isInstanceReadyForUpdates === false) {
+            return false;
+        }
+
+        $apps = $appFetcher->get();
+        foreach($apps as $app) {
+            if($app['id'] === $appId) {
+                $currentVersion = OC_App::getAppVersion($appId);
+                $newestVersion = $app['releases'][0]['version'];
+                if (version_compare($newestVersion, $currentVersion, '>')) {
+                    return $newestVersion;
+                } else {
+                    return false;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Check if app is already downloaded
+     * @param string $name name of the application to remove
+     * @return boolean
+     *
+     * The function will check if the app is already downloaded in the apps repository
+     */
+    public function isDownloaded($name) {
+        foreach(\OC::$APPSROOTS as $dir) {
+            $dirToTest  = $dir['path'];
+            $dirToTest .= '/';
+            $dirToTest .= $name;
+            $dirToTest .= '/';
+
+            if (is_dir($dirToTest)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Removes an app
+     * @param string $appId ID of the application to remove
+     * @return boolean
+     *
+     *
+     * This function works as follows
+     *   -# call uninstall repair steps
+     *   -# removing the files
+     *
+     * The function will not delete preferences, tables and the configuration,
+     * this has to be done by the function oc_app_uninstall().
+     */
+    public function removeApp($appId) {
+        if($this->isDownloaded( $appId )) {
+            $appDir = OC_App::getInstallPath() . '/' . $appId;
+            OC_Helper::rmdirr($appDir);
+            return true;
+        }else{
+            \OCP\Util::writeLog('core', 'can\'t remove app '.$appId.'. It is not installed.', \OCP\Util::ERROR);
+
+            return false;
+        }
+
+    }
+
+    /**
+     * Installs shipped apps
+     *
+     * This function installs all apps found in the 'apps' directory that should be enabled by default;
+     * @param bool $softErrors When updating we ignore errors and simply log them, better to have a
+     *                         working ownCloud at the end instead of an aborted update.
+     * @return array Array of error messages (appid => Exception)
+     */
+    public static function installShippedApps($softErrors = false) {
+        $errors = [];
+        foreach(\OC::$APPSROOTS as $app_dir) {
+            if($dir = opendir( $app_dir['path'] )) {
+                while( false !== ( $filename = readdir( $dir ))) {
+                    if( substr( $filename, 0, 1 ) != '.' and is_dir($app_dir['path']."/$filename") ) {
+                        if( file_exists( $app_dir['path']."/$filename/appinfo/info.xml" )) {
+                            if(!Installer::isInstalled($filename)) {
+                                $info=OC_App::getAppInfo($filename);
+                                $enabled = isset($info['default_enable']);
+                                if (($enabled || in_array($filename, \OC::$server->getAppManager()->getAlwaysEnabledApps()))
+                                      && \OC::$server->getConfig()->getAppValue($filename, 'enabled') !== 'no') {
+                                    if ($softErrors) {
+                                        try {
+                                            Installer::installShippedApp($filename);
+                                        } catch (HintException $e) {
+                                            if ($e->getPrevious() instanceof TableExistsException) {
+                                                $errors[$filename] = $e;
+                                                continue;
+                                            }
+                                            throw $e;
+                                        }
+                                    } else {
+                                        Installer::installShippedApp($filename);
+                                    }
+                                    \OC::$server->getConfig()->setAppValue($filename, 'enabled', 'yes');
+                                }
+                            }
+                        }
+                    }
+                }
+                closedir( $dir );
+            }
+        }
+
+        return $errors;
+    }
+
+    /**
+     * install an app already placed in the app folder
+     * @param string $app id of the app to install
+     * @return integer
+     */
+    public static function installShippedApp($app) {
+        //install the database
+        $appPath = OC_App::getAppPath($app);
+        if(is_file("$appPath/appinfo/database.xml")) {
+            try {
+                OC_DB::createDbFromStructure("$appPath/appinfo/database.xml");
+            } catch (TableExistsException $e) {
+                throw new HintException(
+                    'Failed to enable app ' . $app,
+                    'Please ask for help via one of our <a href="https://nextcloud.com/support/" target="_blank" rel="noreferrer">support channels</a>.',
+                    0, $e
+                );
+            }
+        }
+
+        //run appinfo/install.php
+        \OC_App::registerAutoloading($app, $appPath);
+        self::includeAppScript("$appPath/appinfo/install.php");
+
+        $info = OC_App::getAppInfo($app);
+        if (is_null($info)) {
+            return false;
+        }
+        \OC_App::setupBackgroundJobs($info['background-jobs']);
+
+        OC_App::executeRepairSteps($app, $info['repair-steps']['install']);
+
+        $config = \OC::$server->getConfig();
+
+        $config->setAppValue($app, 'installed_version', OC_App::getAppVersion($app));
+        if (array_key_exists('ocsid', $info)) {
+            $config->setAppValue($app, 'ocsid', $info['ocsid']);
+        }
+
+        //set remote/public handlers
+        foreach($info['remote'] as $name=>$path) {
+            $config->setAppValue('core', 'remote_'.$name, $app.'/'.$path);
+        }
+        foreach($info['public'] as $name=>$path) {
+            $config->setAppValue('core', 'public_'.$name, $app.'/'.$path);
+        }
+
+        OC_App::setAppTypes($info['id']);
+
+        if(isset($info['settings']) && is_array($info['settings'])) {
+            // requires that autoloading was registered for the app,
+            // as happens before running the install.php some lines above
+            \OC::$server->getSettingsManager()->setupSettings($info['settings']);
+        }
+
+        return $info['id'];
+    }
+
+    /**
+     * check the code of an app with some static code checks
+     * @param string $folder the folder of the app to check
+     * @return boolean true for app is o.k. and false for app is not o.k.
+     */
+    public static function checkCode($folder) {
+        // is the code checker enabled?
+        if(!\OC::$server->getConfig()->getSystemValue('appcodechecker', false)) {
+            return true;
+        }
+
+        $codeChecker = new CodeChecker(new PrivateCheck(new EmptyCheck()));
+        $errors = $codeChecker->analyseFolder(basename($folder), $folder);
+
+        return empty($errors);
+    }
+
+    /**
+     * @param string $script
+     */
+    private static function includeAppScript($script) {
+        if ( file_exists($script) ){
+            include $script;
+        }
+    }
 }

Spacing +50 added lines, -50 removed lines

@@ -94,7 +94,7 @@ 
 	 */
 	public function installApp($appId) {
 		$app = \OC_App::findAppInDirectories($appId);
-		if($app === false) {
+		if ($app === false) {
 			throw new \Exception('App not found in any app directory');
 		}
 
@@ -102,7 +102,7 @@ 
 		$info = OC_App::getAppInfo($basedir.'/appinfo/info.xml', true);
 
 		//install the database
-		if(is_file($basedir.'/appinfo/database.xml')) {
+		if (is_file($basedir.'/appinfo/database.xml')) {
 			if (\OC::$server->getAppConfig()->getValue($info['id'], 'installed_version') === null) {
 				OC_DB::createDbFromStructure($basedir.'/appinfo/database.xml');
 			} else {
@@ -113,8 +113,8 @@ 
 		\OC_App::setupBackgroundJobs($info['background-jobs']);
 
 		//run appinfo/install.php
-		if((!isset($data['noinstall']) or $data['noinstall']==false)) {
-			self::includeAppScript($basedir . '/appinfo/install.php');
+		if ((!isset($data['noinstall']) or $data['noinstall'] == false)) {
+			self::includeAppScript($basedir.'/appinfo/install.php');
 		}
 
 		$appData = OC_App::getAppInfo($appId);
@@ -125,10 +125,10 @@ 
 		\OC::$server->getConfig()->setAppValue($info['id'], 'enabled', 'no');
 
 		//set remote/public handlers
-		foreach($info['remote'] as $name=>$path) {
+		foreach ($info['remote'] as $name=>$path) {
 			\OC::$server->getConfig()->setAppValue('core', 'remote_'.$name, $info['id'].'/'.$path);
 		}
-		foreach($info['public'] as $name=>$path) {
+		foreach ($info['public'] as $name=>$path) {
 			\OC::$server->getConfig()->setAppValue('core', 'public_'.$name, $info['id'].'/'.$path);
 		}
 
@@ -144,7 +144,7 @@ 
 	 *
 	 * Checks whether or not an app is installed, i.e. registered in apps table.
 	 */
-	public static function isInstalled( $app ) {
+	public static function isInstalled($app) {
 		return (\OC::$server->getConfig()->getAppValue($app, "installed_version", null) !== null);
 	}
 
@@ -155,7 +155,7 @@ 
 	 * @return bool
 	 */
 	public function updateAppstoreApp($appId) {
-		if(self::isUpdateAvailable($appId, $this->appFetcher)) {
+		if (self::isUpdateAvailable($appId, $this->appFetcher)) {
 			try {
 				$this->downloadApp($appId);
 			} catch (\Exception $e) {
@@ -179,18 +179,18 @@ 
 		$appId = strtolower($appId);
 
 		$apps = $this->appFetcher->get();
-		foreach($apps as $app) {
-			if($app['id'] === $appId) {
+		foreach ($apps as $app) {
+			if ($app['id'] === $appId) {
 				// Load the certificate
 				$certificate = new X509();
-				$certificate->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
+				$certificate->loadCA(file_get_contents(__DIR__.'/../../resources/codesigning/root.crt'));
 				$loadedCertificate = $certificate->loadX509($app['certificate']);
 
 				// Verify if the certificate has been revoked
 				$crl = new X509();
-				$crl->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
-				$crl->loadCRL(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crl'));
-				if($crl->validateSignature() !== true) {
+				$crl->loadCA(file_get_contents(__DIR__.'/../../resources/codesigning/root.crt'));
+				$crl->loadCRL(file_get_contents(__DIR__.'/../../resources/codesigning/root.crl'));
+				if ($crl->validateSignature() !== true) {
 					throw new \Exception('Could not validate CRL signature');
 				}
 				$csn = $loadedCertificate['tbsCertificate']['serialNumber']->toString();
@@ -205,7 +205,7 @@ 
 				}
 
 				// Verify if the certificate has been issued by the Nextcloud Code Authority CA
-				if($certificate->validateSignature() !== true) {
+				if ($certificate->validateSignature() !== true) {
 					throw new \Exception(
 						sprintf(
 							'App with id %s has a certificate not issued by a trusted Code Signing Authority',
@@ -216,7 +216,7 @@ 
 
 				// Verify if the certificate is issued for the requested app id
 				$certInfo = openssl_x509_parse($app['certificate']);
-				if(!isset($certInfo['subject']['CN'])) {
+				if (!isset($certInfo['subject']['CN'])) {
 					throw new \Exception(
 						sprintf(
 							'App with id %s has a cert with no CN',
@@ -224,7 +224,7 @@ 
 						)
 					);
 				}
-				if($certInfo['subject']['CN'] !== $appId) {
+				if ($certInfo['subject']['CN'] !== $appId) {
 					throw new \Exception(
 						sprintf(
 							'App with id %s has a cert issued to %s',
@@ -241,21 +241,21 @@ 
 
 				// Check if the signature actually matches the downloaded content
 				$certificate = openssl_get_publickey($app['certificate']);
-				$verified = (bool)openssl_verify(file_get_contents($tempFile), base64_decode($app['releases'][0]['signature']), $certificate, OPENSSL_ALGO_SHA512);
+				$verified = (bool) openssl_verify(file_get_contents($tempFile), base64_decode($app['releases'][0]['signature']), $certificate, OPENSSL_ALGO_SHA512);
 				openssl_free_key($certificate);
 
-				if($verified === true) {
+				if ($verified === true) {
 					// Seems to match, let's proceed
 					$extractDir = $this->tempManager->getTemporaryFolder();
 					$archive = new TAR($tempFile);
 
-					if($archive) {
+					if ($archive) {
 						$archive->extract($extractDir);
 						$allFiles = scandir($extractDir);
 						$folders = array_diff($allFiles, ['.', '..']);
 						$folders = array_values($folders);
 
-						if(count($folders) > 1) {
+						if (count($folders) > 1) {
 							throw new \Exception(
 								sprintf(
 									'Extracted app %s has more than 1 folder',
@@ -266,22 +266,22 @@ 
 
 						// Check if appinfo/info.xml has the same app ID as well
 						$loadEntities = libxml_disable_entity_loader(false);
-						$xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml');
+						$xml = simplexml_load_file($extractDir.'/'.$folders[0].'/appinfo/info.xml');
 						libxml_disable_entity_loader($loadEntities);
-						if((string)$xml->id !== $appId) {
+						if ((string) $xml->id !== $appId) {
 							throw new \Exception(
 								sprintf(
 									'App for id %s has a wrong app ID in info.xml: %s',
 									$appId,
-									(string)$xml->id
+									(string) $xml->id
 								)
 							);
 						}
 
 						// Check if the version is lower than before
 						$currentVersion = OC_App::getAppVersion($appId);
-						$newVersion = (string)$xml->version;
-						if(version_compare($currentVersion, $newVersion) === 1) {
+						$newVersion = (string) $xml->version;
+						if (version_compare($currentVersion, $newVersion) === 1) {
 							throw new \Exception(
 								sprintf(
 									'App for id %s has version %s and tried to update to lower version %s',
@@ -292,12 +292,12 @@ 
 							);
 						}
 
-						$baseDir = OC_App::getInstallPath() . '/' . $appId;
+						$baseDir = OC_App::getInstallPath().'/'.$appId;
 						// Remove old app with the ID if existent
 						OC_Helper::rmdirr($baseDir);
 						// Move to app folder
-						if(@mkdir($baseDir)) {
-							$extractDir .= '/' . $folders[0];
+						if (@mkdir($baseDir)) {
+							$extractDir .= '/'.$folders[0];
 							OC_Helper::copyr($extractDir, $baseDir);
 						}
 						OC_Helper::copyr($extractDir, $baseDir);
@@ -357,8 +357,8 @@ 
 		}
 
 		$apps = $appFetcher->get();
-		foreach($apps as $app) {
-			if($app['id'] === $appId) {
+		foreach ($apps as $app) {
+			if ($app['id'] === $appId) {
 				$currentVersion = OC_App::getAppVersion($appId);
 				$newestVersion = $app['releases'][0]['version'];
 				if (version_compare($newestVersion, $currentVersion, '>')) {
@@ -380,7 +380,7 @@ 
 	 * The function will check if the app is already downloaded in the apps repository
 	 */
 	public function isDownloaded($name) {
-		foreach(\OC::$APPSROOTS as $dir) {
+		foreach (\OC::$APPSROOTS as $dir) {
 			$dirToTest  = $dir['path'];
 			$dirToTest .= '/';
 			$dirToTest .= $name;
@@ -408,11 +408,11 @@ 
 	 * this has to be done by the function oc_app_uninstall().
 	 */
 	public function removeApp($appId) {
-		if($this->isDownloaded( $appId )) {
-			$appDir = OC_App::getInstallPath() . '/' . $appId;
+		if ($this->isDownloaded($appId)) {
+			$appDir = OC_App::getInstallPath().'/'.$appId;
 			OC_Helper::rmdirr($appDir);
 			return true;
-		}else{
+		} else {
 			\OCP\Util::writeLog('core', 'can\'t remove app '.$appId.'. It is not installed.', \OCP\Util::ERROR);
 
 			return false;
@@ -430,13 +430,13 @@ 
 	 */
 	public static function installShippedApps($softErrors = false) {
 		$errors = [];
-		foreach(\OC::$APPSROOTS as $app_dir) {
-			if($dir = opendir( $app_dir['path'] )) {
-				while( false !== ( $filename = readdir( $dir ))) {
-					if( substr( $filename, 0, 1 ) != '.' and is_dir($app_dir['path']."/$filename") ) {
-						if( file_exists( $app_dir['path']."/$filename/appinfo/info.xml" )) {
-							if(!Installer::isInstalled($filename)) {
-								$info=OC_App::getAppInfo($filename);
+		foreach (\OC::$APPSROOTS as $app_dir) {
+			if ($dir = opendir($app_dir['path'])) {
+				while (false !== ($filename = readdir($dir))) {
+					if (substr($filename, 0, 1) != '.' and is_dir($app_dir['path']."/$filename")) {
+						if (file_exists($app_dir['path']."/$filename/appinfo/info.xml")) {
+							if (!Installer::isInstalled($filename)) {
+								$info = OC_App::getAppInfo($filename);
 								$enabled = isset($info['default_enable']);
 								if (($enabled || in_array($filename, \OC::$server->getAppManager()->getAlwaysEnabledApps()))
 									  && \OC::$server->getConfig()->getAppValue($filename, 'enabled') !== 'no') {
@@ -459,7 +459,7 @@ 
 						}
 					}
 				}
-				closedir( $dir );
+				closedir($dir);
 			}
 		}
 
@@ -474,12 +474,12 @@ 
 	public static function installShippedApp($app) {
 		//install the database
 		$appPath = OC_App::getAppPath($app);
-		if(is_file("$appPath/appinfo/database.xml")) {
+		if (is_file("$appPath/appinfo/database.xml")) {
 			try {
 				OC_DB::createDbFromStructure("$appPath/appinfo/database.xml");
 			} catch (TableExistsException $e) {
 				throw new HintException(
-					'Failed to enable app ' . $app,
+					'Failed to enable app '.$app,
 					'Please ask for help via one of our <a href="https://nextcloud.com/support/" target="_blank" rel="noreferrer">support channels</a>.',
 					0, $e
 				);
@@ -506,16 +506,16 @@ 
 		}
 
 		//set remote/public handlers
-		foreach($info['remote'] as $name=>$path) {
+		foreach ($info['remote'] as $name=>$path) {
 			$config->setAppValue('core', 'remote_'.$name, $app.'/'.$path);
 		}
-		foreach($info['public'] as $name=>$path) {
+		foreach ($info['public'] as $name=>$path) {
 			$config->setAppValue('core', 'public_'.$name, $app.'/'.$path);
 		}
 
 		OC_App::setAppTypes($info['id']);
 
-		if(isset($info['settings']) && is_array($info['settings'])) {
+		if (isset($info['settings']) && is_array($info['settings'])) {
 			// requires that autoloading was registered for the app,
 			// as happens before running the install.php some lines above
 			\OC::$server->getSettingsManager()->setupSettings($info['settings']);
@@ -531,7 +531,7 @@ 
 	 */
 	public static function checkCode($folder) {
 		// is the code checker enabled?
-		if(!\OC::$server->getConfig()->getSystemValue('appcodechecker', false)) {
+		if (!\OC::$server->getConfig()->getSystemValue('appcodechecker', false)) {
 			return true;
 		}
 
@@ -545,7 +545,7 @@ 
 	 * @param string $script
 	 */
 	private static function includeAppScript($script) {
-		if ( file_exists($script) ){
+		if (file_exists($script)) {
 			include $script;
 		}
 	}

Braces +1 added lines, -1 removed lines

@@ -412,7 +412,7 @@
 			$appDir = OC_App::getInstallPath() . '/' . $appId;
 			OC_Helper::rmdirr($appDir);
 			return true;
-		}else{
+		} else{
 			\OCP\Util::writeLog('core', 'can\'t remove app '.$appId.'. It is not installed.', \OCP\Util::ERROR);
 
 			return false;

apps/dav/lib/HookManager.php

Unused Use Statements -1 removed lines

@@ -28,7 +28,6 @@
 use OCP\IUserManager;
 use OCP\Util;
 use Symfony\Component\EventDispatcher\EventDispatcher;
-use Symfony\Component\EventDispatcher\GenericEvent;
 
 class HookManager {
 

Indentation +111 added lines, -111 removed lines

@@ -32,115 +32,115 @@
 
 class HookManager {
 
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var SyncService */
-	private $syncService;
-
-	/** @var IUser[] */
-	private $usersToDelete;
-
-	/** @var CalDavBackend */
-	private $calDav;
-
-	/** @var CardDavBackend */
-	private $cardDav;
-
-	/** @var array */
-	private $calendarsToDelete;
-
-	/** @var array */
-	private $addressBooksToDelete;
-
-	/** @var EventDispatcher */
-	private $eventDispatcher;
-
-	public function __construct(IUserManager $userManager,
-								SyncService $syncService,
-								CalDavBackend $calDav,
-								CardDavBackend $cardDav,
-								EventDispatcher $eventDispatcher) {
-		$this->userManager = $userManager;
-		$this->syncService = $syncService;
-		$this->calDav = $calDav;
-		$this->cardDav = $cardDav;
-		$this->eventDispatcher = $eventDispatcher;
-	}
-
-	public function setup() {
-		Util::connectHook('OC_User',
-			'post_createUser',
-			$this,
-			'postCreateUser');
-		Util::connectHook('OC_User',
-			'pre_deleteUser',
-			$this,
-			'preDeleteUser');
-		Util::connectHook('OC_User',
-			'post_deleteUser',
-			$this,
-			'postDeleteUser');
-		Util::connectHook('OC_User',
-			'changeUser',
-			$this,
-			'changeUser');
-	}
-
-	public function postCreateUser($params) {
-		$user = $this->userManager->get($params['uid']);
-		$this->syncService->updateUser($user);
-	}
-
-	public function preDeleteUser($params) {
-		$uid = $params['uid'];
-		$this->usersToDelete[$uid] = $this->userManager->get($uid);
-		$this->calendarsToDelete = $this->calDav->getUsersOwnCalendars('principals/users/' . $uid);
-		$this->addressBooksToDelete = $this->cardDav->getUsersOwnAddressBooks('principals/users/' . $uid);
-	}
-
-	public function postDeleteUser($params) {
-		$uid = $params['uid'];
-		if (isset($this->usersToDelete[$uid])){
-			$this->syncService->deleteUser($this->usersToDelete[$uid]);
-		}
-
-		foreach ($this->calendarsToDelete as $calendar) {
-			$this->calDav->deleteCalendar($calendar['id']);
-		}
-		$this->calDav->deleteAllSharesByUser('principals/users/' . $uid);
-
-		foreach ($this->addressBooksToDelete as $addressBook) {
-			$this->cardDav->deleteAddressBook($addressBook['id']);
-		}
-	}
-
-	public function changeUser($params) {
-		$user = $params['user'];
-		$this->syncService->updateUser($user);
-	}
-
-	public function firstLogin(IUser $user = null) {
-		if (!is_null($user)) {
-			$principal = 'principals/users/' . $user->getUID();
-			if ($this->calDav->getCalendarsForUserCount($principal) === 0) {
-				try {
-					$this->calDav->createCalendar($principal, CalDavBackend::PERSONAL_CALENDAR_URI, [
-						'{DAV:}displayname' => CalDavBackend::PERSONAL_CALENDAR_NAME,
-					]);
-				} catch (\Exception $ex) {
-					\OC::$server->getLogger()->logException($ex);
-				}
-			}
-			if ($this->cardDav->getAddressBooksForUserCount($principal) === 0) {
-				try {
-					$this->cardDav->createAddressBook($principal, CardDavBackend::PERSONAL_ADDRESSBOOK_URI, [
-						'{DAV:}displayname' => CardDavBackend::PERSONAL_ADDRESSBOOK_NAME,
-					]);
-				} catch (\Exception $ex) {
-					\OC::$server->getLogger()->logException($ex);
-				}
-			}
-		}
-	}
+    /** @var IUserManager */
+    private $userManager;
+
+    /** @var SyncService */
+    private $syncService;
+
+    /** @var IUser[] */
+    private $usersToDelete;
+
+    /** @var CalDavBackend */
+    private $calDav;
+
+    /** @var CardDavBackend */
+    private $cardDav;
+
+    /** @var array */
+    private $calendarsToDelete;
+
+    /** @var array */
+    private $addressBooksToDelete;
+
+    /** @var EventDispatcher */
+    private $eventDispatcher;
+
+    public function __construct(IUserManager $userManager,
+                                SyncService $syncService,
+                                CalDavBackend $calDav,
+                                CardDavBackend $cardDav,
+                                EventDispatcher $eventDispatcher) {
+        $this->userManager = $userManager;
+        $this->syncService = $syncService;
+        $this->calDav = $calDav;
+        $this->cardDav = $cardDav;
+        $this->eventDispatcher = $eventDispatcher;
+    }
+
+    public function setup() {
+        Util::connectHook('OC_User',
+            'post_createUser',
+            $this,
+            'postCreateUser');
+        Util::connectHook('OC_User',
+            'pre_deleteUser',
+            $this,
+            'preDeleteUser');
+        Util::connectHook('OC_User',
+            'post_deleteUser',
+            $this,
+            'postDeleteUser');
+        Util::connectHook('OC_User',
+            'changeUser',
+            $this,
+            'changeUser');
+    }
+
+    public function postCreateUser($params) {
+        $user = $this->userManager->get($params['uid']);
+        $this->syncService->updateUser($user);
+    }
+
+    public function preDeleteUser($params) {
+        $uid = $params['uid'];
+        $this->usersToDelete[$uid] = $this->userManager->get($uid);
+        $this->calendarsToDelete = $this->calDav->getUsersOwnCalendars('principals/users/' . $uid);
+        $this->addressBooksToDelete = $this->cardDav->getUsersOwnAddressBooks('principals/users/' . $uid);
+    }
+
+    public function postDeleteUser($params) {
+        $uid = $params['uid'];
+        if (isset($this->usersToDelete[$uid])){
+            $this->syncService->deleteUser($this->usersToDelete[$uid]);
+        }
+
+        foreach ($this->calendarsToDelete as $calendar) {
+            $this->calDav->deleteCalendar($calendar['id']);
+        }
+        $this->calDav->deleteAllSharesByUser('principals/users/' . $uid);
+
+        foreach ($this->addressBooksToDelete as $addressBook) {
+            $this->cardDav->deleteAddressBook($addressBook['id']);
+        }
+    }
+
+    public function changeUser($params) {
+        $user = $params['user'];
+        $this->syncService->updateUser($user);
+    }
+
+    public function firstLogin(IUser $user = null) {
+        if (!is_null($user)) {
+            $principal = 'principals/users/' . $user->getUID();
+            if ($this->calDav->getCalendarsForUserCount($principal) === 0) {
+                try {
+                    $this->calDav->createCalendar($principal, CalDavBackend::PERSONAL_CALENDAR_URI, [
+                        '{DAV:}displayname' => CalDavBackend::PERSONAL_CALENDAR_NAME,
+                    ]);
+                } catch (\Exception $ex) {
+                    \OC::$server->getLogger()->logException($ex);
+                }
+            }
+            if ($this->cardDav->getAddressBooksForUserCount($principal) === 0) {
+                try {
+                    $this->cardDav->createAddressBook($principal, CardDavBackend::PERSONAL_ADDRESSBOOK_URI, [
+                        '{DAV:}displayname' => CardDavBackend::PERSONAL_ADDRESSBOOK_NAME,
+                    ]);
+                } catch (\Exception $ex) {
+                    \OC::$server->getLogger()->logException($ex);
+                }
+            }
+        }
+    }
 }

Spacing +5 added lines, -5 removed lines

@@ -95,20 +95,20 @@ 
 	public function preDeleteUser($params) {
 		$uid = $params['uid'];
 		$this->usersToDelete[$uid] = $this->userManager->get($uid);
-		$this->calendarsToDelete = $this->calDav->getUsersOwnCalendars('principals/users/' . $uid);
-		$this->addressBooksToDelete = $this->cardDav->getUsersOwnAddressBooks('principals/users/' . $uid);
+		$this->calendarsToDelete = $this->calDav->getUsersOwnCalendars('principals/users/'.$uid);
+		$this->addressBooksToDelete = $this->cardDav->getUsersOwnAddressBooks('principals/users/'.$uid);
 	}
 
 	public function postDeleteUser($params) {
 		$uid = $params['uid'];
-		if (isset($this->usersToDelete[$uid])){
+		if (isset($this->usersToDelete[$uid])) {
 			$this->syncService->deleteUser($this->usersToDelete[$uid]);
 		}
 
 		foreach ($this->calendarsToDelete as $calendar) {
 			$this->calDav->deleteCalendar($calendar['id']);
 		}
-		$this->calDav->deleteAllSharesByUser('principals/users/' . $uid);
+		$this->calDav->deleteAllSharesByUser('principals/users/'.$uid);
 
 		foreach ($this->addressBooksToDelete as $addressBook) {
 			$this->cardDav->deleteAddressBook($addressBook['id']);
@@ -122,7 +122,7 @@ 
 
 	public function firstLogin(IUser $user = null) {
 		if (!is_null($user)) {
-			$principal = 'principals/users/' . $user->getUID();
+			$principal = 'principals/users/'.$user->getUID();
 			if ($this->calDav->getCalendarsForUserCount($principal) === 0) {
 				try {
 					$this->calDav->createCalendar($principal, CalDavBackend::PERSONAL_CALENDAR_URI, [

apps/files_sharing/lib/Cache.php

Doc Comments +3 added lines

@@ -110,6 +110,9 @@
 		return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
 	}
 
+	/**
+	 * @param ICacheEntry $entry
+	 */
 	protected function formatCacheEntry($entry) {
 		$path = isset($entry['path']) ? $entry['path'] : '';
 		$entry = parent::formatCacheEntry($entry);

Unused Use Statements -1 removed lines

@@ -29,7 +29,6 @@
 
 use OC\Files\Cache\Wrapper\CacheJail;
 use OCP\Files\Cache\ICacheEntry;
-use OCP\Files\Storage\IStorage;
 
 /**
  * Metadata cache for shared files

Indentation +102 added lines, -102 removed lines

@@ -37,106 +37,106 @@
  * don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
  */
 class Cache extends CacheJail {
-	/**
-	 * @var \OCA\Files_Sharing\SharedStorage
-	 */
-	private $storage;
-
-	/**
-	 * @var ICacheEntry
-	 */
-	private $sourceRootInfo;
-
-	private $rootUnchanged = true;
-
-	private $ownerDisplayName;
-
-	private $numericId;
-
-	/**
-	 * @param \OCA\Files_Sharing\SharedStorage $storage
-	 * @param ICacheEntry $sourceRootInfo
-	 */
-	public function __construct($storage, ICacheEntry $sourceRootInfo) {
-		$this->storage = $storage;
-		$this->sourceRootInfo = $sourceRootInfo;
-		$this->numericId = $sourceRootInfo->getStorageId();
-		parent::__construct(
-			null,
-			$this->sourceRootInfo->getPath()
-		);
-	}
-
-	public function getCache() {
-		if (is_null($this->cache)) {
-			$this->cache = $this->storage->getSourceStorage()->getCache();
-		}
-		return $this->cache;
-	}
-
-	public function getNumericStorageId() {
-		if (isset($this->numericId)) {
-			return $this->numericId;
-		} else {
-			return false;
-		}
-	}
-
-	public function get($file) {
-		if ($this->rootUnchanged && ($file === '' || $file === $this->sourceRootInfo->getId())) {
-			return $this->formatCacheEntry(clone $this->sourceRootInfo);
-		}
-		return parent::get($file);
-	}
-
-	public function update($id, array $data) {
-		$this->rootUnchanged = false;
-		parent::update($id, $data);
-	}
-
-	public function insert($file, array $data) {
-		$this->rootUnchanged = false;
-		return parent::insert($file, $data);
-	}
-
-	public function remove($file) {
-		$this->rootUnchanged = false;
-		parent::remove($file);
-	}
-
-	public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
-		$this->rootUnchanged = false;
-		return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
-	}
-
-	protected function formatCacheEntry($entry) {
-		$path = isset($entry['path']) ? $entry['path'] : '';
-		$entry = parent::formatCacheEntry($entry);
-		$sharePermissions = $this->storage->getPermissions($path);
-		if (isset($entry['permissions'])) {
-			$entry['permissions'] &= $sharePermissions;
-		} else {
-			$entry['permissions'] = $sharePermissions;
-		}
-		$entry['uid_owner'] = $this->storage->getOwner($path);
-		$entry['displayname_owner'] = $this->getOwnerDisplayName();
-		if ($path === '') {
-			$entry['is_share_mount_point'] = true;
-		}
-		return $entry;
-	}
-
-	private function getOwnerDisplayName() {
-		if (!$this->ownerDisplayName) {
-			$this->ownerDisplayName = \OC_User::getDisplayName($this->storage->getOwner(''));
-		}
-		return $this->ownerDisplayName;
-	}
-
-	/**
-	 * remove all entries for files that are stored on the storage from the cache
-	 */
-	public function clear() {
-		// Not a valid action for Shared Cache
-	}
+    /**
+     * @var \OCA\Files_Sharing\SharedStorage
+     */
+    private $storage;
+
+    /**
+     * @var ICacheEntry
+     */
+    private $sourceRootInfo;
+
+    private $rootUnchanged = true;
+
+    private $ownerDisplayName;
+
+    private $numericId;
+
+    /**
+     * @param \OCA\Files_Sharing\SharedStorage $storage
+     * @param ICacheEntry $sourceRootInfo
+     */
+    public function __construct($storage, ICacheEntry $sourceRootInfo) {
+        $this->storage = $storage;
+        $this->sourceRootInfo = $sourceRootInfo;
+        $this->numericId = $sourceRootInfo->getStorageId();
+        parent::__construct(
+            null,
+            $this->sourceRootInfo->getPath()
+        );
+    }
+
+    public function getCache() {
+        if (is_null($this->cache)) {
+            $this->cache = $this->storage->getSourceStorage()->getCache();
+        }
+        return $this->cache;
+    }
+
+    public function getNumericStorageId() {
+        if (isset($this->numericId)) {
+            return $this->numericId;
+        } else {
+            return false;
+        }
+    }
+
+    public function get($file) {
+        if ($this->rootUnchanged && ($file === '' || $file === $this->sourceRootInfo->getId())) {
+            return $this->formatCacheEntry(clone $this->sourceRootInfo);
+        }
+        return parent::get($file);
+    }
+
+    public function update($id, array $data) {
+        $this->rootUnchanged = false;
+        parent::update($id, $data);
+    }
+
+    public function insert($file, array $data) {
+        $this->rootUnchanged = false;
+        return parent::insert($file, $data);
+    }
+
+    public function remove($file) {
+        $this->rootUnchanged = false;
+        parent::remove($file);
+    }
+
+    public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
+        $this->rootUnchanged = false;
+        return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
+    }
+
+    protected function formatCacheEntry($entry) {
+        $path = isset($entry['path']) ? $entry['path'] : '';
+        $entry = parent::formatCacheEntry($entry);
+        $sharePermissions = $this->storage->getPermissions($path);
+        if (isset($entry['permissions'])) {
+            $entry['permissions'] &= $sharePermissions;
+        } else {
+            $entry['permissions'] = $sharePermissions;
+        }
+        $entry['uid_owner'] = $this->storage->getOwner($path);
+        $entry['displayname_owner'] = $this->getOwnerDisplayName();
+        if ($path === '') {
+            $entry['is_share_mount_point'] = true;
+        }
+        return $entry;
+    }
+
+    private function getOwnerDisplayName() {
+        if (!$this->ownerDisplayName) {
+            $this->ownerDisplayName = \OC_User::getDisplayName($this->storage->getOwner(''));
+        }
+        return $this->ownerDisplayName;
+    }
+
+    /**
+     * remove all entries for files that are stored on the storage from the cache
+     */
+    public function clear() {
+        // Not a valid action for Shared Cache
+    }
 }

lib/private/Files/Filesystem.php

Doc Comments +31 added lines, -2 removed lines

@@ -360,6 +360,9 @@ 
 		}
 	}
 
+	/**
+	 * @param string $root
+	 */
 	static public function init($user, $root) {
 		if (self::$defaultInstance) {
 			return false;
@@ -528,7 +531,7 @@ 
 	/**
 	 * mount an \OC\Files\Storage\Storage in our virtual filesystem
 	 *
-	 * @param \OC\Files\Storage\Storage|string $class
+	 * @param string $class
 	 * @param array $arguments
 	 * @param string $mountpoint
 	 */
@@ -660,6 +663,9 @@ 
 		return self::$defaultInstance->is_dir($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function is_file($path) {
 		return self::$defaultInstance->is_file($path);
 	}
@@ -672,6 +678,9 @@ 
 		return self::$defaultInstance->filetype($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function filesize($path) {
 		return self::$defaultInstance->filesize($path);
 	}
@@ -684,6 +693,9 @@ 
 		return self::$defaultInstance->isCreatable($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function isReadable($path) {
 		return self::$defaultInstance->isReadable($path);
 	}
@@ -696,6 +708,9 @@ 
 		return self::$defaultInstance->isDeletable($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function isSharable($path) {
 		return self::$defaultInstance->isSharable($path);
 	}
@@ -704,6 +719,9 @@ 
 		return self::$defaultInstance->file_exists($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function filemtime($path) {
 		return self::$defaultInstance->filemtime($path);
 	}
@@ -713,6 +731,7 @@ 
 	}
 
 	/**
+	 * @param string $path
 	 * @return string
 	 */
 	static public function file_get_contents($path) {
@@ -735,6 +754,10 @@ 
 		return self::$defaultInstance->copy($path1, $path2);
 	}
 
+	/**
+	 * @param string $path
+	 * @param string $mode
+	 */
 	static public function fopen($path, $mode) {
 		return self::$defaultInstance->fopen($path, $mode);
 	}
@@ -750,6 +773,9 @@ 
 		return self::$defaultInstance->fromTmpFile($tmpFile, $path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function getMimeType($path) {
 		return self::$defaultInstance->getMimeType($path);
 	}
@@ -762,6 +788,9 @@ 
 		return self::$defaultInstance->free_space($path);
 	}
 
+	/**
+	 * @param string $query
+	 */
 	static public function search($query) {
 		return self::$defaultInstance->search($query);
 	}
@@ -870,7 +899,7 @@ 
 	 * @param string $path
 	 * @param boolean $includeMountPoints whether to add mountpoint sizes,
 	 * defaults to true
-	 * @return \OC\Files\FileInfo|bool False if file does not exist
+	 * @return \OCP\Files\FileInfo|null False if file does not exist
 	 */
 	public static function getFileInfo($path, $includeMountPoints = true) {
 		return self::$defaultInstance->getFileInfo($path, $includeMountPoints);

Unused Use Statements -1 removed lines

@@ -64,7 +64,6 @@
 use OC\Files\Storage\StorageFactory;
 use OC\Lockdown\Filesystem\NullStorage;
 use OCP\Files\Config\IMountProvider;
-use OCP\Files\Mount\IMountPoint;
 use OCP\Files\NotFoundException;
 use OCP\IUserManager;
 

Spacing +10 added lines, -10 removed lines

@@ -409,17 +409,17 @@ 
 		$userObject = $userManager->get($user);
 
 		if (is_null($userObject)) {
-			\OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
+			\OCP\Util::writeLog('files', ' Backends provided no user object for '.$user, \OCP\Util::ERROR);
 			// reset flag, this will make it possible to rethrow the exception if called again
 			unset(self::$usersSetup[$user]);
-			throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
+			throw new \OC\User\NoUserException('Backends provided no user object for '.$user);
 		}
 
 		$realUid = $userObject->getUID();
 		// workaround in case of different casings
 		if ($user !== $realUid) {
 			$stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
-			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
+			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "'.$realUid.'" got "'.$user.'". Stack: '.$stack, \OCP\Util::WARN);
 			$user = $realUid;
 
 			// again with the correct casing
@@ -453,11 +453,11 @@ 
 		} else {
 			self::getMountManager()->addMount(new MountPoint(
 				new NullStorage([]),
-				'/' . $user
+				'/'.$user
 			));
 			self::getMountManager()->addMount(new MountPoint(
 				new NullStorage([]),
-				'/' . $user . '/files'
+				'/'.$user.'/files'
 			));
 		}
 		\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
@@ -472,7 +472,7 @@ 
 	private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
 		if (!self::$listeningForProviders) {
 			self::$listeningForProviders = true;
-			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
+			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function(IMountProvider $provider) use ($userManager) {
 				foreach (Filesystem::$usersSetup as $user => $setup) {
 					$userObject = $userManager->get($user);
 					if ($userObject) {
@@ -567,7 +567,7 @@ 
 	 * @return string
 	 */
 	static public function getLocalPath($path) {
-		$datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
+		$datadir = \OC_User::getHome(\OC_User::getUser()).'/files';
 		$newpath = $path;
 		if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
 			$newpath = substr($path, strlen($datadir));
@@ -584,7 +584,7 @@ 
 	static public function isValidPath($path) {
 		$path = self::normalizePath($path);
 		if (!$path || $path[0] !== '/') {
-			$path = '/' . $path;
+			$path = '/'.$path;
 		}
 		if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
 			return false;
@@ -813,7 +813,7 @@ 
 		 *        conversion should get removed as soon as all existing
 		 *        function calls have been fixed.
 		 */
-		$path = (string)$path;
+		$path = (string) $path;
 
 		$cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
 
@@ -835,7 +835,7 @@ 
 
 		//add leading slash
 		if ($path[0] !== '/') {
-			$path = '/' . $path;
+			$path = '/'.$path;
 		}
 
 		// remove '/./'

Indentation +861 added lines, -861 removed lines

@@ -70,865 +70,865 @@
 
 class Filesystem {
 
-	/**
-	 * @var Mount\Manager $mounts
-	 */
-	private static $mounts;
-
-	public static $loaded = false;
-	/**
-	 * @var \OC\Files\View $defaultInstance
-	 */
-	static private $defaultInstance;
-
-	static private $usersSetup = array();
-
-	static private $normalizedPathCache = null;
-
-	static private $listeningForProviders = false;
-
-	/**
-	 * classname which used for hooks handling
-	 * used as signalclass in OC_Hooks::emit()
-	 */
-	const CLASSNAME = 'OC_Filesystem';
-
-	/**
-	 * signalname emitted before file renaming
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_rename = 'rename';
-
-	/**
-	 * signal emitted after file renaming
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_post_rename = 'post_rename';
-
-	/**
-	 * signal emitted before file/dir creation
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_create = 'create';
-
-	/**
-	 * signal emitted after file/dir creation
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_post_create = 'post_create';
-
-	/**
-	 * signal emits before file/dir copy
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_copy = 'copy';
-
-	/**
-	 * signal emits after file/dir copy
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_post_copy = 'post_copy';
-
-	/**
-	 * signal emits before file/dir save
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_write = 'write';
-
-	/**
-	 * signal emits after file/dir save
-	 *
-	 * @param string $path
-	 */
-	const signal_post_write = 'post_write';
-
-	/**
-	 * signal emitted before file/dir update
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_update = 'update';
-
-	/**
-	 * signal emitted after file/dir update
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_post_update = 'post_update';
-
-	/**
-	 * signal emits when reading file/dir
-	 *
-	 * @param string $path
-	 */
-	const signal_read = 'read';
-
-	/**
-	 * signal emits when removing file/dir
-	 *
-	 * @param string $path
-	 */
-	const signal_delete = 'delete';
-
-	/**
-	 * parameters definitions for signals
-	 */
-	const signal_param_path = 'path';
-	const signal_param_oldpath = 'oldpath';
-	const signal_param_newpath = 'newpath';
-
-	/**
-	 * run - changing this flag to false in hook handler will cancel event
-	 */
-	const signal_param_run = 'run';
-
-	const signal_create_mount = 'create_mount';
-	const signal_delete_mount = 'delete_mount';
-	const signal_param_mount_type = 'mounttype';
-	const signal_param_users = 'users';
-
-	/**
-	 * @var \OC\Files\Storage\StorageFactory $loader
-	 */
-	private static $loader;
-
-	/** @var bool */
-	private static $logWarningWhenAddingStorageWrapper = true;
-
-	/**
-	 * @param bool $shouldLog
-	 * @return bool previous value
-	 * @internal
-	 */
-	public static function logWarningWhenAddingStorageWrapper($shouldLog) {
-		$previousValue = self::$logWarningWhenAddingStorageWrapper;
-		self::$logWarningWhenAddingStorageWrapper = (bool) $shouldLog;
-		return $previousValue;
-	}
-
-	/**
-	 * @param string $wrapperName
-	 * @param callable $wrapper
-	 * @param int $priority
-	 */
-	public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
-		if (self::$logWarningWhenAddingStorageWrapper) {
-			\OC::$server->getLogger()->warning("Storage wrapper '{wrapper}' was not registered via the 'OC_Filesystem - preSetup' hook which could cause potential problems.", [
-				'wrapper' => $wrapperName,
-				'app' => 'filesystem',
-			]);
-		}
-
-		$mounts = self::getMountManager()->getAll();
-		if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
-			// do not re-wrap if storage with this name already existed
-			return;
-		}
-	}
-
-	/**
-	 * Returns the storage factory
-	 *
-	 * @return \OCP\Files\Storage\IStorageFactory
-	 */
-	public static function getLoader() {
-		if (!self::$loader) {
-			self::$loader = new StorageFactory();
-		}
-		return self::$loader;
-	}
-
-	/**
-	 * Returns the mount manager
-	 *
-	 * @return \OC\Files\Mount\Manager
-	 */
-	public static function getMountManager($user = '') {
-		if (!self::$mounts) {
-			\OC_Util::setupFS($user);
-		}
-		return self::$mounts;
-	}
-
-	/**
-	 * get the mountpoint of the storage object for a path
-	 * ( note: because a storage is not always mounted inside the fakeroot, the
-	 * returned mountpoint is relative to the absolute root of the filesystem
-	 * and doesn't take the chroot into account )
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getMountPoint($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($path);
-		if ($mount) {
-			return $mount->getMountPoint();
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * get a list of all mount points in a directory
-	 *
-	 * @param string $path
-	 * @return string[]
-	 */
-	static public function getMountPoints($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$result = array();
-		$mounts = self::$mounts->findIn($path);
-		foreach ($mounts as $mount) {
-			$result[] = $mount->getMountPoint();
-		}
-		return $result;
-	}
-
-	/**
-	 * get the storage mounted at $mountPoint
-	 *
-	 * @param string $mountPoint
-	 * @return \OC\Files\Storage\Storage
-	 */
-	public static function getStorage($mountPoint) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($mountPoint);
-		return $mount->getStorage();
-	}
-
-	/**
-	 * @param string $id
-	 * @return Mount\MountPoint[]
-	 */
-	public static function getMountByStorageId($id) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		return self::$mounts->findByStorageId($id);
-	}
-
-	/**
-	 * @param int $id
-	 * @return Mount\MountPoint[]
-	 */
-	public static function getMountByNumericId($id) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		return self::$mounts->findByNumericId($id);
-	}
-
-	/**
-	 * resolve a path to a storage and internal path
-	 *
-	 * @param string $path
-	 * @return array an array consisting of the storage and the internal path
-	 */
-	static public function resolvePath($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($path);
-		if ($mount) {
-			return array($mount->getStorage(), rtrim($mount->getInternalPath($path), '/'));
-		} else {
-			return array(null, null);
-		}
-	}
-
-	static public function init($user, $root) {
-		if (self::$defaultInstance) {
-			return false;
-		}
-		self::getLoader();
-		self::$defaultInstance = new View($root);
-
-		if (!self::$mounts) {
-			self::$mounts = \OC::$server->getMountManager();
-		}
-
-		//load custom mount config
-		self::initMountPoints($user);
-
-		self::$loaded = true;
-
-		return true;
-	}
-
-	static public function initMountManager() {
-		if (!self::$mounts) {
-			self::$mounts = \OC::$server->getMountManager();
-		}
-	}
-
-	/**
-	 * Initialize system and personal mount points for a user
-	 *
-	 * @param string $user
-	 * @throws \OC\User\NoUserException if the user is not available
-	 */
-	public static function initMountPoints($user = '') {
-		if ($user == '') {
-			$user = \OC_User::getUser();
-		}
-		if ($user === null || $user === false || $user === '') {
-			throw new \OC\User\NoUserException('Attempted to initialize mount points for null user and no user in session');
-		}
-
-		if (isset(self::$usersSetup[$user])) {
-			return;
-		}
-
-		self::$usersSetup[$user] = true;
-
-		$userManager = \OC::$server->getUserManager();
-		$userObject = $userManager->get($user);
-
-		if (is_null($userObject)) {
-			\OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
-			// reset flag, this will make it possible to rethrow the exception if called again
-			unset(self::$usersSetup[$user]);
-			throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
-		}
-
-		$realUid = $userObject->getUID();
-		// workaround in case of different casings
-		if ($user !== $realUid) {
-			$stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
-			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
-			$user = $realUid;
-
-			// again with the correct casing
-			if (isset(self::$usersSetup[$user])) {
-				return;
-			}
-
-			self::$usersSetup[$user] = true;
-		}
-
-		if (\OC::$server->getLockdownManager()->canAccessFilesystem()) {
-			/** @var \OC\Files\Config\MountProviderCollection $mountConfigManager */
-			$mountConfigManager = \OC::$server->getMountProviderCollection();
-
-			// home mounts are handled seperate since we need to ensure this is mounted before we call the other mount providers
-			$homeMount = $mountConfigManager->getHomeMountForUser($userObject);
-
-			self::getMountManager()->addMount($homeMount);
-
-			\OC\Files\Filesystem::getStorage($user);
-
-			// Chance to mount for other storages
-			if ($userObject) {
-				$mounts = $mountConfigManager->addMountForUser($userObject, self::getMountManager());
-				$mounts[] = $homeMount;
-				$mountConfigManager->registerMounts($userObject, $mounts);
-			}
-
-			self::listenForNewMountProviders($mountConfigManager, $userManager);
-		} else {
-			self::getMountManager()->addMount(new MountPoint(
-				new NullStorage([]),
-				'/' . $user
-			));
-			self::getMountManager()->addMount(new MountPoint(
-				new NullStorage([]),
-				'/' . $user . '/files'
-			));
-		}
-		\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
-	}
-
-	/**
-	 * Get mounts from mount providers that are registered after setup
-	 *
-	 * @param MountProviderCollection $mountConfigManager
-	 * @param IUserManager $userManager
-	 */
-	private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
-		if (!self::$listeningForProviders) {
-			self::$listeningForProviders = true;
-			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
-				foreach (Filesystem::$usersSetup as $user => $setup) {
-					$userObject = $userManager->get($user);
-					if ($userObject) {
-						$mounts = $provider->getMountsForUser($userObject, Filesystem::getLoader());
-						array_walk($mounts, array(self::$mounts, 'addMount'));
-					}
-				}
-			});
-		}
-	}
-
-	/**
-	 * get the default filesystem view
-	 *
-	 * @return View
-	 */
-	static public function getView() {
-		return self::$defaultInstance;
-	}
-
-	/**
-	 * tear down the filesystem, removing all storage providers
-	 */
-	static public function tearDown() {
-		self::clearMounts();
-		self::$defaultInstance = null;
-	}
-
-	/**
-	 * get the relative path of the root data directory for the current user
-	 *
-	 * @return string
-	 *
-	 * Returns path like /admin/files
-	 */
-	static public function getRoot() {
-		if (!self::$defaultInstance) {
-			return null;
-		}
-		return self::$defaultInstance->getRoot();
-	}
-
-	/**
-	 * clear all mounts and storage backends
-	 */
-	public static function clearMounts() {
-		if (self::$mounts) {
-			self::$usersSetup = array();
-			self::$mounts->clear();
-		}
-	}
-
-	/**
-	 * mount an \OC\Files\Storage\Storage in our virtual filesystem
-	 *
-	 * @param \OC\Files\Storage\Storage|string $class
-	 * @param array $arguments
-	 * @param string $mountpoint
-	 */
-	static public function mount($class, $arguments, $mountpoint) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
-		self::$mounts->addMount($mount);
-	}
-
-	/**
-	 * return the path to a local version of the file
-	 * we need this because we can't know if a file is stored local or not from
-	 * outside the filestorage and for some purposes a local file is needed
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalFile($path) {
-		return self::$defaultInstance->getLocalFile($path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalFolder($path) {
-		return self::$defaultInstance->getLocalFolder($path);
-	}
-
-	/**
-	 * return path to file which reflects one visible in browser
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalPath($path) {
-		$datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
-		$newpath = $path;
-		if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
-			$newpath = substr($path, strlen($datadir));
-		}
-		return $newpath;
-	}
-
-	/**
-	 * check if the requested path is valid
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	static public function isValidPath($path) {
-		$path = self::normalizePath($path);
-		if (!$path || $path[0] !== '/') {
-			$path = '/' . $path;
-		}
-		if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * checks if a file is blacklisted for storage in the filesystem
-	 * Listens to write and rename hooks
-	 *
-	 * @param array $data from hook
-	 */
-	static public function isBlacklisted($data) {
-		if (isset($data['path'])) {
-			$path = $data['path'];
-		} else if (isset($data['newpath'])) {
-			$path = $data['newpath'];
-		}
-		if (isset($path)) {
-			if (self::isFileBlacklisted($path)) {
-				$data['run'] = false;
-			}
-		}
-	}
-
-	/**
-	 * @param string $filename
-	 * @return bool
-	 */
-	static public function isFileBlacklisted($filename) {
-		$filename = self::normalizePath($filename);
-
-		$blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', array('.htaccess'));
-		$filename = strtolower(basename($filename));
-		return in_array($filename, $blacklist);
-	}
-
-	/**
-	 * check if the directory should be ignored when scanning
-	 * NOTE: the special directories . and .. would cause never ending recursion
-	 *
-	 * @param String $dir
-	 * @return boolean
-	 */
-	static public function isIgnoredDir($dir) {
-		if ($dir === '.' || $dir === '..') {
-			return true;
-		}
-		return false;
-	}
-
-	/**
-	 * following functions are equivalent to their php builtin equivalents for arguments/return values.
-	 */
-	static public function mkdir($path) {
-		return self::$defaultInstance->mkdir($path);
-	}
-
-	static public function rmdir($path) {
-		return self::$defaultInstance->rmdir($path);
-	}
-
-	static public function opendir($path) {
-		return self::$defaultInstance->opendir($path);
-	}
-
-	static public function readdir($path) {
-		return self::$defaultInstance->readdir($path);
-	}
-
-	static public function is_dir($path) {
-		return self::$defaultInstance->is_dir($path);
-	}
-
-	static public function is_file($path) {
-		return self::$defaultInstance->is_file($path);
-	}
-
-	static public function stat($path) {
-		return self::$defaultInstance->stat($path);
-	}
-
-	static public function filetype($path) {
-		return self::$defaultInstance->filetype($path);
-	}
-
-	static public function filesize($path) {
-		return self::$defaultInstance->filesize($path);
-	}
-
-	static public function readfile($path) {
-		return self::$defaultInstance->readfile($path);
-	}
-
-	static public function isCreatable($path) {
-		return self::$defaultInstance->isCreatable($path);
-	}
-
-	static public function isReadable($path) {
-		return self::$defaultInstance->isReadable($path);
-	}
-
-	static public function isUpdatable($path) {
-		return self::$defaultInstance->isUpdatable($path);
-	}
-
-	static public function isDeletable($path) {
-		return self::$defaultInstance->isDeletable($path);
-	}
-
-	static public function isSharable($path) {
-		return self::$defaultInstance->isSharable($path);
-	}
-
-	static public function file_exists($path) {
-		return self::$defaultInstance->file_exists($path);
-	}
-
-	static public function filemtime($path) {
-		return self::$defaultInstance->filemtime($path);
-	}
-
-	static public function touch($path, $mtime = null) {
-		return self::$defaultInstance->touch($path, $mtime);
-	}
-
-	/**
-	 * @return string
-	 */
-	static public function file_get_contents($path) {
-		return self::$defaultInstance->file_get_contents($path);
-	}
-
-	static public function file_put_contents($path, $data) {
-		return self::$defaultInstance->file_put_contents($path, $data);
-	}
-
-	static public function unlink($path) {
-		return self::$defaultInstance->unlink($path);
-	}
-
-	static public function rename($path1, $path2) {
-		return self::$defaultInstance->rename($path1, $path2);
-	}
-
-	static public function copy($path1, $path2) {
-		return self::$defaultInstance->copy($path1, $path2);
-	}
-
-	static public function fopen($path, $mode) {
-		return self::$defaultInstance->fopen($path, $mode);
-	}
-
-	/**
-	 * @return string
-	 */
-	static public function toTmpFile($path) {
-		return self::$defaultInstance->toTmpFile($path);
-	}
-
-	static public function fromTmpFile($tmpFile, $path) {
-		return self::$defaultInstance->fromTmpFile($tmpFile, $path);
-	}
-
-	static public function getMimeType($path) {
-		return self::$defaultInstance->getMimeType($path);
-	}
-
-	static public function hash($type, $path, $raw = false) {
-		return self::$defaultInstance->hash($type, $path, $raw);
-	}
-
-	static public function free_space($path = '/') {
-		return self::$defaultInstance->free_space($path);
-	}
-
-	static public function search($query) {
-		return self::$defaultInstance->search($query);
-	}
-
-	/**
-	 * @param string $query
-	 */
-	static public function searchByMime($query) {
-		return self::$defaultInstance->searchByMime($query);
-	}
-
-	/**
-	 * @param string|int $tag name or tag id
-	 * @param string $userId owner of the tags
-	 * @return FileInfo[] array or file info
-	 */
-	static public function searchByTag($tag, $userId) {
-		return self::$defaultInstance->searchByTag($tag, $userId);
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 */
-	static public function hasUpdated($path, $time) {
-		return self::$defaultInstance->hasUpdated($path, $time);
-	}
-
-	/**
-	 * Fix common problems with a file path
-	 *
-	 * @param string $path
-	 * @param bool $stripTrailingSlash whether to strip the trailing slash
-	 * @param bool $isAbsolutePath whether the given path is absolute
-	 * @param bool $keepUnicode true to disable unicode normalization
-	 * @return string
-	 */
-	public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false, $keepUnicode = false) {
-		if (is_null(self::$normalizedPathCache)) {
-			self::$normalizedPathCache = new CappedMemoryCache();
-		}
-
-		/**
-		 * FIXME: This is a workaround for existing classes and files which call
-		 *        this function with another type than a valid string. This
-		 *        conversion should get removed as soon as all existing
-		 *        function calls have been fixed.
-		 */
-		$path = (string)$path;
-
-		$cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
-
-		if (isset(self::$normalizedPathCache[$cacheKey])) {
-			return self::$normalizedPathCache[$cacheKey];
-		}
-
-		if ($path == '') {
-			return '/';
-		}
-
-		//normalize unicode if possible
-		if (!$keepUnicode) {
-			$path = \OC_Util::normalizeUnicode($path);
-		}
-
-		//no windows style slashes
-		$path = str_replace('\\', '/', $path);
-
-		//add leading slash
-		if ($path[0] !== '/') {
-			$path = '/' . $path;
-		}
-
-		// remove '/./'
-		// ugly, but str_replace() can't replace them all in one go
-		// as the replacement itself is part of the search string
-		// which will only be found during the next iteration
-		while (strpos($path, '/./') !== false) {
-			$path = str_replace('/./', '/', $path);
-		}
-		// remove sequences of slashes
-		$path = preg_replace('#/{2,}#', '/', $path);
-
-		//remove trailing slash
-		if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
-			$path = substr($path, 0, -1);
-		}
-
-		// remove trailing '/.'
-		if (substr($path, -2) == '/.') {
-			$path = substr($path, 0, -2);
-		}
-
-		$normalizedPath = $path;
-		self::$normalizedPathCache[$cacheKey] = $normalizedPath;
-
-		return $normalizedPath;
-	}
-
-	/**
-	 * get the filesystem info
-	 *
-	 * @param string $path
-	 * @param boolean $includeMountPoints whether to add mountpoint sizes,
-	 * defaults to true
-	 * @return \OC\Files\FileInfo|bool False if file does not exist
-	 */
-	public static function getFileInfo($path, $includeMountPoints = true) {
-		return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
-	}
-
-	/**
-	 * change file metadata
-	 *
-	 * @param string $path
-	 * @param array $data
-	 * @return int
-	 *
-	 * returns the fileid of the updated file
-	 */
-	public static function putFileInfo($path, $data) {
-		return self::$defaultInstance->putFileInfo($path, $data);
-	}
-
-	/**
-	 * get the content of a directory
-	 *
-	 * @param string $directory path under datadirectory
-	 * @param string $mimetype_filter limit returned content to this mimetype or mimepart
-	 * @return \OC\Files\FileInfo[]
-	 */
-	public static function getDirectoryContent($directory, $mimetype_filter = '') {
-		return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
-	}
-
-	/**
-	 * Get the path of a file by id
-	 *
-	 * Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
-	 *
-	 * @param int $id
-	 * @throws NotFoundException
-	 * @return string
-	 */
-	public static function getPath($id) {
-		return self::$defaultInstance->getPath($id);
-	}
-
-	/**
-	 * Get the owner for a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public static function getOwner($path) {
-		return self::$defaultInstance->getOwner($path);
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getETag($path) {
-		return self::$defaultInstance->getETag($path);
-	}
+    /**
+     * @var Mount\Manager $mounts
+     */
+    private static $mounts;
+
+    public static $loaded = false;
+    /**
+     * @var \OC\Files\View $defaultInstance
+     */
+    static private $defaultInstance;
+
+    static private $usersSetup = array();
+
+    static private $normalizedPathCache = null;
+
+    static private $listeningForProviders = false;
+
+    /**
+     * classname which used for hooks handling
+     * used as signalclass in OC_Hooks::emit()
+     */
+    const CLASSNAME = 'OC_Filesystem';
+
+    /**
+     * signalname emitted before file renaming
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_rename = 'rename';
+
+    /**
+     * signal emitted after file renaming
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_post_rename = 'post_rename';
+
+    /**
+     * signal emitted before file/dir creation
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_create = 'create';
+
+    /**
+     * signal emitted after file/dir creation
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_post_create = 'post_create';
+
+    /**
+     * signal emits before file/dir copy
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_copy = 'copy';
+
+    /**
+     * signal emits after file/dir copy
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_post_copy = 'post_copy';
+
+    /**
+     * signal emits before file/dir save
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_write = 'write';
+
+    /**
+     * signal emits after file/dir save
+     *
+     * @param string $path
+     */
+    const signal_post_write = 'post_write';
+
+    /**
+     * signal emitted before file/dir update
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_update = 'update';
+
+    /**
+     * signal emitted after file/dir update
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_post_update = 'post_update';
+
+    /**
+     * signal emits when reading file/dir
+     *
+     * @param string $path
+     */
+    const signal_read = 'read';
+
+    /**
+     * signal emits when removing file/dir
+     *
+     * @param string $path
+     */
+    const signal_delete = 'delete';
+
+    /**
+     * parameters definitions for signals
+     */
+    const signal_param_path = 'path';
+    const signal_param_oldpath = 'oldpath';
+    const signal_param_newpath = 'newpath';
+
+    /**
+     * run - changing this flag to false in hook handler will cancel event
+     */
+    const signal_param_run = 'run';
+
+    const signal_create_mount = 'create_mount';
+    const signal_delete_mount = 'delete_mount';
+    const signal_param_mount_type = 'mounttype';
+    const signal_param_users = 'users';
+
+    /**
+     * @var \OC\Files\Storage\StorageFactory $loader
+     */
+    private static $loader;
+
+    /** @var bool */
+    private static $logWarningWhenAddingStorageWrapper = true;
+
+    /**
+     * @param bool $shouldLog
+     * @return bool previous value
+     * @internal
+     */
+    public static function logWarningWhenAddingStorageWrapper($shouldLog) {
+        $previousValue = self::$logWarningWhenAddingStorageWrapper;
+        self::$logWarningWhenAddingStorageWrapper = (bool) $shouldLog;
+        return $previousValue;
+    }
+
+    /**
+     * @param string $wrapperName
+     * @param callable $wrapper
+     * @param int $priority
+     */
+    public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
+        if (self::$logWarningWhenAddingStorageWrapper) {
+            \OC::$server->getLogger()->warning("Storage wrapper '{wrapper}' was not registered via the 'OC_Filesystem - preSetup' hook which could cause potential problems.", [
+                'wrapper' => $wrapperName,
+                'app' => 'filesystem',
+            ]);
+        }
+
+        $mounts = self::getMountManager()->getAll();
+        if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
+            // do not re-wrap if storage with this name already existed
+            return;
+        }
+    }
+
+    /**
+     * Returns the storage factory
+     *
+     * @return \OCP\Files\Storage\IStorageFactory
+     */
+    public static function getLoader() {
+        if (!self::$loader) {
+            self::$loader = new StorageFactory();
+        }
+        return self::$loader;
+    }
+
+    /**
+     * Returns the mount manager
+     *
+     * @return \OC\Files\Mount\Manager
+     */
+    public static function getMountManager($user = '') {
+        if (!self::$mounts) {
+            \OC_Util::setupFS($user);
+        }
+        return self::$mounts;
+    }
+
+    /**
+     * get the mountpoint of the storage object for a path
+     * ( note: because a storage is not always mounted inside the fakeroot, the
+     * returned mountpoint is relative to the absolute root of the filesystem
+     * and doesn't take the chroot into account )
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getMountPoint($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($path);
+        if ($mount) {
+            return $mount->getMountPoint();
+        } else {
+            return '';
+        }
+    }
+
+    /**
+     * get a list of all mount points in a directory
+     *
+     * @param string $path
+     * @return string[]
+     */
+    static public function getMountPoints($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $result = array();
+        $mounts = self::$mounts->findIn($path);
+        foreach ($mounts as $mount) {
+            $result[] = $mount->getMountPoint();
+        }
+        return $result;
+    }
+
+    /**
+     * get the storage mounted at $mountPoint
+     *
+     * @param string $mountPoint
+     * @return \OC\Files\Storage\Storage
+     */
+    public static function getStorage($mountPoint) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($mountPoint);
+        return $mount->getStorage();
+    }
+
+    /**
+     * @param string $id
+     * @return Mount\MountPoint[]
+     */
+    public static function getMountByStorageId($id) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        return self::$mounts->findByStorageId($id);
+    }
+
+    /**
+     * @param int $id
+     * @return Mount\MountPoint[]
+     */
+    public static function getMountByNumericId($id) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        return self::$mounts->findByNumericId($id);
+    }
+
+    /**
+     * resolve a path to a storage and internal path
+     *
+     * @param string $path
+     * @return array an array consisting of the storage and the internal path
+     */
+    static public function resolvePath($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($path);
+        if ($mount) {
+            return array($mount->getStorage(), rtrim($mount->getInternalPath($path), '/'));
+        } else {
+            return array(null, null);
+        }
+    }
+
+    static public function init($user, $root) {
+        if (self::$defaultInstance) {
+            return false;
+        }
+        self::getLoader();
+        self::$defaultInstance = new View($root);
+
+        if (!self::$mounts) {
+            self::$mounts = \OC::$server->getMountManager();
+        }
+
+        //load custom mount config
+        self::initMountPoints($user);
+
+        self::$loaded = true;
+
+        return true;
+    }
+
+    static public function initMountManager() {
+        if (!self::$mounts) {
+            self::$mounts = \OC::$server->getMountManager();
+        }
+    }
+
+    /**
+     * Initialize system and personal mount points for a user
+     *
+     * @param string $user
+     * @throws \OC\User\NoUserException if the user is not available
+     */
+    public static function initMountPoints($user = '') {
+        if ($user == '') {
+            $user = \OC_User::getUser();
+        }
+        if ($user === null || $user === false || $user === '') {
+            throw new \OC\User\NoUserException('Attempted to initialize mount points for null user and no user in session');
+        }
+
+        if (isset(self::$usersSetup[$user])) {
+            return;
+        }
+
+        self::$usersSetup[$user] = true;
+
+        $userManager = \OC::$server->getUserManager();
+        $userObject = $userManager->get($user);
+
+        if (is_null($userObject)) {
+            \OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
+            // reset flag, this will make it possible to rethrow the exception if called again
+            unset(self::$usersSetup[$user]);
+            throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
+        }
+
+        $realUid = $userObject->getUID();
+        // workaround in case of different casings
+        if ($user !== $realUid) {
+            $stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
+            \OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
+            $user = $realUid;
+
+            // again with the correct casing
+            if (isset(self::$usersSetup[$user])) {
+                return;
+            }
+
+            self::$usersSetup[$user] = true;
+        }
+
+        if (\OC::$server->getLockdownManager()->canAccessFilesystem()) {
+            /** @var \OC\Files\Config\MountProviderCollection $mountConfigManager */
+            $mountConfigManager = \OC::$server->getMountProviderCollection();
+
+            // home mounts are handled seperate since we need to ensure this is mounted before we call the other mount providers
+            $homeMount = $mountConfigManager->getHomeMountForUser($userObject);
+
+            self::getMountManager()->addMount($homeMount);
+
+            \OC\Files\Filesystem::getStorage($user);
+
+            // Chance to mount for other storages
+            if ($userObject) {
+                $mounts = $mountConfigManager->addMountForUser($userObject, self::getMountManager());
+                $mounts[] = $homeMount;
+                $mountConfigManager->registerMounts($userObject, $mounts);
+            }
+
+            self::listenForNewMountProviders($mountConfigManager, $userManager);
+        } else {
+            self::getMountManager()->addMount(new MountPoint(
+                new NullStorage([]),
+                '/' . $user
+            ));
+            self::getMountManager()->addMount(new MountPoint(
+                new NullStorage([]),
+                '/' . $user . '/files'
+            ));
+        }
+        \OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
+    }
+
+    /**
+     * Get mounts from mount providers that are registered after setup
+     *
+     * @param MountProviderCollection $mountConfigManager
+     * @param IUserManager $userManager
+     */
+    private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
+        if (!self::$listeningForProviders) {
+            self::$listeningForProviders = true;
+            $mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
+                foreach (Filesystem::$usersSetup as $user => $setup) {
+                    $userObject = $userManager->get($user);
+                    if ($userObject) {
+                        $mounts = $provider->getMountsForUser($userObject, Filesystem::getLoader());
+                        array_walk($mounts, array(self::$mounts, 'addMount'));
+                    }
+                }
+            });
+        }
+    }
+
+    /**
+     * get the default filesystem view
+     *
+     * @return View
+     */
+    static public function getView() {
+        return self::$defaultInstance;
+    }
+
+    /**
+     * tear down the filesystem, removing all storage providers
+     */
+    static public function tearDown() {
+        self::clearMounts();
+        self::$defaultInstance = null;
+    }
+
+    /**
+     * get the relative path of the root data directory for the current user
+     *
+     * @return string
+     *
+     * Returns path like /admin/files
+     */
+    static public function getRoot() {
+        if (!self::$defaultInstance) {
+            return null;
+        }
+        return self::$defaultInstance->getRoot();
+    }
+
+    /**
+     * clear all mounts and storage backends
+     */
+    public static function clearMounts() {
+        if (self::$mounts) {
+            self::$usersSetup = array();
+            self::$mounts->clear();
+        }
+    }
+
+    /**
+     * mount an \OC\Files\Storage\Storage in our virtual filesystem
+     *
+     * @param \OC\Files\Storage\Storage|string $class
+     * @param array $arguments
+     * @param string $mountpoint
+     */
+    static public function mount($class, $arguments, $mountpoint) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
+        self::$mounts->addMount($mount);
+    }
+
+    /**
+     * return the path to a local version of the file
+     * we need this because we can't know if a file is stored local or not from
+     * outside the filestorage and for some purposes a local file is needed
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalFile($path) {
+        return self::$defaultInstance->getLocalFile($path);
+    }
+
+    /**
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalFolder($path) {
+        return self::$defaultInstance->getLocalFolder($path);
+    }
+
+    /**
+     * return path to file which reflects one visible in browser
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalPath($path) {
+        $datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
+        $newpath = $path;
+        if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
+            $newpath = substr($path, strlen($datadir));
+        }
+        return $newpath;
+    }
+
+    /**
+     * check if the requested path is valid
+     *
+     * @param string $path
+     * @return bool
+     */
+    static public function isValidPath($path) {
+        $path = self::normalizePath($path);
+        if (!$path || $path[0] !== '/') {
+            $path = '/' . $path;
+        }
+        if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * checks if a file is blacklisted for storage in the filesystem
+     * Listens to write and rename hooks
+     *
+     * @param array $data from hook
+     */
+    static public function isBlacklisted($data) {
+        if (isset($data['path'])) {
+            $path = $data['path'];
+        } else if (isset($data['newpath'])) {
+            $path = $data['newpath'];
+        }
+        if (isset($path)) {
+            if (self::isFileBlacklisted($path)) {
+                $data['run'] = false;
+            }
+        }
+    }
+
+    /**
+     * @param string $filename
+     * @return bool
+     */
+    static public function isFileBlacklisted($filename) {
+        $filename = self::normalizePath($filename);
+
+        $blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', array('.htaccess'));
+        $filename = strtolower(basename($filename));
+        return in_array($filename, $blacklist);
+    }
+
+    /**
+     * check if the directory should be ignored when scanning
+     * NOTE: the special directories . and .. would cause never ending recursion
+     *
+     * @param String $dir
+     * @return boolean
+     */
+    static public function isIgnoredDir($dir) {
+        if ($dir === '.' || $dir === '..') {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * following functions are equivalent to their php builtin equivalents for arguments/return values.
+     */
+    static public function mkdir($path) {
+        return self::$defaultInstance->mkdir($path);
+    }
+
+    static public function rmdir($path) {
+        return self::$defaultInstance->rmdir($path);
+    }
+
+    static public function opendir($path) {
+        return self::$defaultInstance->opendir($path);
+    }
+
+    static public function readdir($path) {
+        return self::$defaultInstance->readdir($path);
+    }
+
+    static public function is_dir($path) {
+        return self::$defaultInstance->is_dir($path);
+    }
+
+    static public function is_file($path) {
+        return self::$defaultInstance->is_file($path);
+    }
+
+    static public function stat($path) {
+        return self::$defaultInstance->stat($path);
+    }
+
+    static public function filetype($path) {
+        return self::$defaultInstance->filetype($path);
+    }
+
+    static public function filesize($path) {
+        return self::$defaultInstance->filesize($path);
+    }
+
+    static public function readfile($path) {
+        return self::$defaultInstance->readfile($path);
+    }
+
+    static public function isCreatable($path) {
+        return self::$defaultInstance->isCreatable($path);
+    }
+
+    static public function isReadable($path) {
+        return self::$defaultInstance->isReadable($path);
+    }
+
+    static public function isUpdatable($path) {
+        return self::$defaultInstance->isUpdatable($path);
+    }
+
+    static public function isDeletable($path) {
+        return self::$defaultInstance->isDeletable($path);
+    }
+
+    static public function isSharable($path) {
+        return self::$defaultInstance->isSharable($path);
+    }
+
+    static public function file_exists($path) {
+        return self::$defaultInstance->file_exists($path);
+    }
+
+    static public function filemtime($path) {
+        return self::$defaultInstance->filemtime($path);
+    }
+
+    static public function touch($path, $mtime = null) {
+        return self::$defaultInstance->touch($path, $mtime);
+    }
+
+    /**
+     * @return string
+     */
+    static public function file_get_contents($path) {
+        return self::$defaultInstance->file_get_contents($path);
+    }
+
+    static public function file_put_contents($path, $data) {
+        return self::$defaultInstance->file_put_contents($path, $data);
+    }
+
+    static public function unlink($path) {
+        return self::$defaultInstance->unlink($path);
+    }
+
+    static public function rename($path1, $path2) {
+        return self::$defaultInstance->rename($path1, $path2);
+    }
+
+    static public function copy($path1, $path2) {
+        return self::$defaultInstance->copy($path1, $path2);
+    }
+
+    static public function fopen($path, $mode) {
+        return self::$defaultInstance->fopen($path, $mode);
+    }
+
+    /**
+     * @return string
+     */
+    static public function toTmpFile($path) {
+        return self::$defaultInstance->toTmpFile($path);
+    }
+
+    static public function fromTmpFile($tmpFile, $path) {
+        return self::$defaultInstance->fromTmpFile($tmpFile, $path);
+    }
+
+    static public function getMimeType($path) {
+        return self::$defaultInstance->getMimeType($path);
+    }
+
+    static public function hash($type, $path, $raw = false) {
+        return self::$defaultInstance->hash($type, $path, $raw);
+    }
+
+    static public function free_space($path = '/') {
+        return self::$defaultInstance->free_space($path);
+    }
+
+    static public function search($query) {
+        return self::$defaultInstance->search($query);
+    }
+
+    /**
+     * @param string $query
+     */
+    static public function searchByMime($query) {
+        return self::$defaultInstance->searchByMime($query);
+    }
+
+    /**
+     * @param string|int $tag name or tag id
+     * @param string $userId owner of the tags
+     * @return FileInfo[] array or file info
+     */
+    static public function searchByTag($tag, $userId) {
+        return self::$defaultInstance->searchByTag($tag, $userId);
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     */
+    static public function hasUpdated($path, $time) {
+        return self::$defaultInstance->hasUpdated($path, $time);
+    }
+
+    /**
+     * Fix common problems with a file path
+     *
+     * @param string $path
+     * @param bool $stripTrailingSlash whether to strip the trailing slash
+     * @param bool $isAbsolutePath whether the given path is absolute
+     * @param bool $keepUnicode true to disable unicode normalization
+     * @return string
+     */
+    public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false, $keepUnicode = false) {
+        if (is_null(self::$normalizedPathCache)) {
+            self::$normalizedPathCache = new CappedMemoryCache();
+        }
+
+        /**
+         * FIXME: This is a workaround for existing classes and files which call
+         *        this function with another type than a valid string. This
+         *        conversion should get removed as soon as all existing
+         *        function calls have been fixed.
+         */
+        $path = (string)$path;
+
+        $cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
+
+        if (isset(self::$normalizedPathCache[$cacheKey])) {
+            return self::$normalizedPathCache[$cacheKey];
+        }
+
+        if ($path == '') {
+            return '/';
+        }
+
+        //normalize unicode if possible
+        if (!$keepUnicode) {
+            $path = \OC_Util::normalizeUnicode($path);
+        }
+
+        //no windows style slashes
+        $path = str_replace('\\', '/', $path);
+
+        //add leading slash
+        if ($path[0] !== '/') {
+            $path = '/' . $path;
+        }
+
+        // remove '/./'
+        // ugly, but str_replace() can't replace them all in one go
+        // as the replacement itself is part of the search string
+        // which will only be found during the next iteration
+        while (strpos($path, '/./') !== false) {
+            $path = str_replace('/./', '/', $path);
+        }
+        // remove sequences of slashes
+        $path = preg_replace('#/{2,}#', '/', $path);
+
+        //remove trailing slash
+        if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
+            $path = substr($path, 0, -1);
+        }
+
+        // remove trailing '/.'
+        if (substr($path, -2) == '/.') {
+            $path = substr($path, 0, -2);
+        }
+
+        $normalizedPath = $path;
+        self::$normalizedPathCache[$cacheKey] = $normalizedPath;
+
+        return $normalizedPath;
+    }
+
+    /**
+     * get the filesystem info
+     *
+     * @param string $path
+     * @param boolean $includeMountPoints whether to add mountpoint sizes,
+     * defaults to true
+     * @return \OC\Files\FileInfo|bool False if file does not exist
+     */
+    public static function getFileInfo($path, $includeMountPoints = true) {
+        return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
+    }
+
+    /**
+     * change file metadata
+     *
+     * @param string $path
+     * @param array $data
+     * @return int
+     *
+     * returns the fileid of the updated file
+     */
+    public static function putFileInfo($path, $data) {
+        return self::$defaultInstance->putFileInfo($path, $data);
+    }
+
+    /**
+     * get the content of a directory
+     *
+     * @param string $directory path under datadirectory
+     * @param string $mimetype_filter limit returned content to this mimetype or mimepart
+     * @return \OC\Files\FileInfo[]
+     */
+    public static function getDirectoryContent($directory, $mimetype_filter = '') {
+        return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
+    }
+
+    /**
+     * Get the path of a file by id
+     *
+     * Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
+     *
+     * @param int $id
+     * @throws NotFoundException
+     * @return string
+     */
+    public static function getPath($id) {
+        return self::$defaultInstance->getPath($id);
+    }
+
+    /**
+     * Get the owner for a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    public static function getOwner($path) {
+        return self::$defaultInstance->getOwner($path);
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getETag($path) {
+        return self::$defaultInstance->getETag($path);
+    }
 }