nextcloud / server

apps/files_external/lib/Lib/Auth/OAuth2/OAuth2.php

Indentation +17 added lines, -17 removed lines

@@ -32,21 +32,21 @@
  * OAuth2 authentication
  */
 class OAuth2 extends AuthMechanism {
-	public function __construct(IL10N $l) {
-		$this
-			->setIdentifier('oauth2::oauth2')
-			->setScheme(self::SCHEME_OAUTH2)
-			->setText($l->t('OAuth2'))
-			->addParameters([
-				(new DefinitionParameter('configured', 'configured'))
-					->setType(DefinitionParameter::VALUE_HIDDEN),
-				new DefinitionParameter('client_id', $l->t('Client ID')),
-				(new DefinitionParameter('client_secret', $l->t('Client secret')))
-					->setType(DefinitionParameter::VALUE_PASSWORD),
-				(new DefinitionParameter('token', 'token'))
-					->setType(DefinitionParameter::VALUE_HIDDEN),
-			])
-			->addCustomJs('oauth2')
-		;
-	}
+    public function __construct(IL10N $l) {
+        $this
+            ->setIdentifier('oauth2::oauth2')
+            ->setScheme(self::SCHEME_OAUTH2)
+            ->setText($l->t('OAuth2'))
+            ->addParameters([
+                (new DefinitionParameter('configured', 'configured'))
+                    ->setType(DefinitionParameter::VALUE_HIDDEN),
+                new DefinitionParameter('client_id', $l->t('Client ID')),
+                (new DefinitionParameter('client_secret', $l->t('Client secret')))
+                    ->setType(DefinitionParameter::VALUE_PASSWORD),
+                (new DefinitionParameter('token', 'token'))
+                    ->setType(DefinitionParameter::VALUE_HIDDEN),
+            ])
+            ->addCustomJs('oauth2')
+        ;
+    }
 }

apps/files_external/lib/Lib/Backend/SFTP_Key.php

Indentation +15 added lines, -15 removed lines

@@ -30,19 +30,19 @@
 use OCP\IL10N;
 
 class SFTP_Key extends Backend {
-	public function __construct(IL10N $l, RSA $legacyAuth, SFTP $sftpBackend) {
-		$this
-			->setIdentifier('\OC\Files\Storage\SFTP_Key')
-			->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
-			->setText($l->t('SFTP with secret key login'))
-			->addParameters([
-				new DefinitionParameter('host', $l->t('Host')),
-				(new DefinitionParameter('root', $l->t('Remote subfolder')))
-					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
-			])
-			->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
-			->setLegacyAuthMechanism($legacyAuth)
-			->deprecateTo($sftpBackend)
-		;
-	}
+    public function __construct(IL10N $l, RSA $legacyAuth, SFTP $sftpBackend) {
+        $this
+            ->setIdentifier('\OC\Files\Storage\SFTP_Key')
+            ->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
+            ->setText($l->t('SFTP with secret key login'))
+            ->addParameters([
+                new DefinitionParameter('host', $l->t('Host')),
+                (new DefinitionParameter('root', $l->t('Remote subfolder')))
+                    ->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+            ])
+            ->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
+            ->setLegacyAuthMechanism($legacyAuth)
+            ->deprecateTo($sftpBackend)
+        ;
+    }
 }

apps/files_external/lib/Lib/Backend/Local.php

Indentation +15 added lines, -15 removed lines

@@ -31,19 +31,19 @@
 use OCP\IL10N;
 
 class Local extends Backend {
-	public function __construct(IL10N $l, NullMechanism $legacyAuth) {
-		$this
-			->setIdentifier('local')
-			->addIdentifierAlias('\OC\Files\Storage\Local') // legacy compat
-			->setStorageClass('\OC\Files\Storage\Local')
-			->setText($l->t('Local'))
-			->addParameters([
-				new DefinitionParameter('datadir', $l->t('Location')),
-			])
-			->setAllowedVisibility(BackendService::VISIBILITY_ADMIN)
-			->setPriority(BackendService::PRIORITY_DEFAULT + 50)
-			->addAuthScheme(AuthMechanism::SCHEME_NULL)
-			->setLegacyAuthMechanism($legacyAuth)
-		;
-	}
+    public function __construct(IL10N $l, NullMechanism $legacyAuth) {
+        $this
+            ->setIdentifier('local')
+            ->addIdentifierAlias('\OC\Files\Storage\Local') // legacy compat
+            ->setStorageClass('\OC\Files\Storage\Local')
+            ->setText($l->t('Local'))
+            ->addParameters([
+                new DefinitionParameter('datadir', $l->t('Location')),
+            ])
+            ->setAllowedVisibility(BackendService::VISIBILITY_ADMIN)
+            ->setPriority(BackendService::PRIORITY_DEFAULT + 50)
+            ->addAuthScheme(AuthMechanism::SCHEME_NULL)
+            ->setLegacyAuthMechanism($legacyAuth)
+        ;
+    }
 }

apps/files_external/lib/Lib/Backend/SFTP.php

Indentation +16 added lines, -16 removed lines

@@ -30,20 +30,20 @@
 use OCP\IL10N;
 
 class SFTP extends Backend {
-	public function __construct(IL10N $l, Password $legacyAuth) {
-		$this
-			->setIdentifier('sftp')
-			->addIdentifierAlias('\OC\Files\Storage\SFTP') // legacy compat
-			->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
-			->setText($l->t('SFTP'))
-			->addParameters([
-				new DefinitionParameter('host', $l->t('Host')),
-				(new DefinitionParameter('root', $l->t('Root')))
-					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
-			])
-			->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
-			->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
-			->setLegacyAuthMechanism($legacyAuth)
-		;
-	}
+    public function __construct(IL10N $l, Password $legacyAuth) {
+        $this
+            ->setIdentifier('sftp')
+            ->addIdentifierAlias('\OC\Files\Storage\SFTP') // legacy compat
+            ->setStorageClass('\OCA\Files_External\Lib\Storage\SFTP')
+            ->setText($l->t('SFTP'))
+            ->addParameters([
+                new DefinitionParameter('host', $l->t('Host')),
+                (new DefinitionParameter('root', $l->t('Root')))
+                    ->setFlag(DefinitionParameter::FLAG_OPTIONAL),
+            ])
+            ->addAuthScheme(AuthMechanism::SCHEME_PASSWORD)
+            ->addAuthScheme(AuthMechanism::SCHEME_PUBLICKEY)
+            ->setLegacyAuthMechanism($legacyAuth)
+        ;
+    }
 }

apps/files_external/lib/Lib/Storage/OwnCloud.php

Spacing +2 added lines, -2 removed lines

@@ -65,13 +65,13 @@
 		}
 
 		if (isset($params['root'])) {
-			$root = '/' . ltrim($params['root'], '/');
+			$root = '/'.ltrim($params['root'], '/');
 		} else {
 			$root = '/';
 		}
 
 		$params['host'] = $host;
-		$params['root'] = $contextPath . self::OC_URL_SUFFIX . $root;
+		$params['root'] = $contextPath.self::OC_URL_SUFFIX.$root;
 		$params['authType'] = Client::AUTH_BASIC;
 
 		parent::__construct($params);

Indentation +35 added lines, -35 removed lines

@@ -39,45 +39,45 @@
  *
  */
 class OwnCloud extends \OC\Files\Storage\DAV implements IDisableEncryptionStorage {
-	public const OC_URL_SUFFIX = 'remote.php/webdav';
+    public const OC_URL_SUFFIX = 'remote.php/webdav';
 
-	public function __construct($params) {
-		// extract context path from host if specified
-		// (owncloud install path on host)
-		$host = $params['host'];
-		// strip protocol
-		if (substr($host, 0, 8) === "https://") {
-			$host = substr($host, 8);
-			$params['secure'] = true;
-		} elseif (substr($host, 0, 7) === "http://") {
-			$host = substr($host, 7);
-			$params['secure'] = false;
-		}
-		$contextPath = '';
-		$hostSlashPos = strpos($host, '/');
-		if ($hostSlashPos !== false) {
-			$contextPath = substr($host, $hostSlashPos);
-			$host = substr($host, 0, $hostSlashPos);
-		}
+    public function __construct($params) {
+        // extract context path from host if specified
+        // (owncloud install path on host)
+        $host = $params['host'];
+        // strip protocol
+        if (substr($host, 0, 8) === "https://") {
+            $host = substr($host, 8);
+            $params['secure'] = true;
+        } elseif (substr($host, 0, 7) === "http://") {
+            $host = substr($host, 7);
+            $params['secure'] = false;
+        }
+        $contextPath = '';
+        $hostSlashPos = strpos($host, '/');
+        if ($hostSlashPos !== false) {
+            $contextPath = substr($host, $hostSlashPos);
+            $host = substr($host, 0, $hostSlashPos);
+        }
 
-		if (substr($contextPath, -1) !== '/') {
-			$contextPath .= '/';
-		}
+        if (substr($contextPath, -1) !== '/') {
+            $contextPath .= '/';
+        }
 
-		if (isset($params['root'])) {
-			$root = '/' . ltrim($params['root'], '/');
-		} else {
-			$root = '/';
-		}
+        if (isset($params['root'])) {
+            $root = '/' . ltrim($params['root'], '/');
+        } else {
+            $root = '/';
+        }
 
-		$params['host'] = $host;
-		$params['root'] = $contextPath . self::OC_URL_SUFFIX . $root;
-		$params['authType'] = Client::AUTH_BASIC;
+        $params['host'] = $host;
+        $params['root'] = $contextPath . self::OC_URL_SUFFIX . $root;
+        $params['authType'] = Client::AUTH_BASIC;
 
-		parent::__construct($params);
-	}
+        parent::__construct($params);
+    }
 
-	public function needsPartFile() {
-		return false;
-	}
+    public function needsPartFile() {
+        return false;
+    }
 }

apps/files_external/lib/Config/UserPlaceholderHandler.php

Indentation +14 added lines, -14 removed lines

@@ -25,19 +25,19 @@
 namespace OCA\Files_External\Config;
 
 class UserPlaceholderHandler extends UserContext implements IConfigHandler {
-	use SimpleSubstitutionTrait;
+    use SimpleSubstitutionTrait;
 
-	/**
-	 * @param mixed $optionValue
-	 * @return mixed the same type as $optionValue
-	 * @since 16.0.0
-	 */
-	public function handle($optionValue) {
-		$this->placeholder = 'user';
-		$uid = $this->getUserId();
-		if ($uid === null) {
-			return $optionValue;
-		}
-		return $this->processInput($optionValue, $uid);
-	}
+    /**
+     * @param mixed $optionValue
+     * @return mixed the same type as $optionValue
+     * @since 16.0.0
+     */
+    public function handle($optionValue) {
+        $this->placeholder = 'user';
+        $uid = $this->getUserId();
+        if ($uid === null) {
+            return $optionValue;
+        }
+        return $this->processInput($optionValue, $uid);
+    }
 }

apps/files_external/lib/Config/SimpleSubstitutionTrait.php

Indentation +49 added lines, -49 removed lines

@@ -31,57 +31,57 @@
  * @since 16.0.0
  */
 trait SimpleSubstitutionTrait {
-	/**
-	 * @var string the placeholder without $ prefix
-	 * @since 16.0.0
-	 */
-	protected $placeholder;
+    /**
+     * @var string the placeholder without $ prefix
+     * @since 16.0.0
+     */
+    protected $placeholder;
 
-	/** @var string */
-	protected $sanitizedPlaceholder;
+    /** @var string */
+    protected $sanitizedPlaceholder;
 
-	/**
-	 * @param mixed $optionValue
-	 * @param string $replacement
-	 * @return mixed
-	 * @since 16.0.0
-	 */
-	private function processInput($optionValue, string $replacement) {
-		$this->checkPlaceholder();
-		if (is_array($optionValue)) {
-			foreach ($optionValue as &$value) {
-				$value = $this->substituteIfString($value, $replacement);
-			}
-		} else {
-			$optionValue = $this->substituteIfString($optionValue, $replacement);
-		}
-		return $optionValue;
-	}
+    /**
+     * @param mixed $optionValue
+     * @param string $replacement
+     * @return mixed
+     * @since 16.0.0
+     */
+    private function processInput($optionValue, string $replacement) {
+        $this->checkPlaceholder();
+        if (is_array($optionValue)) {
+            foreach ($optionValue as &$value) {
+                $value = $this->substituteIfString($value, $replacement);
+            }
+        } else {
+            $optionValue = $this->substituteIfString($optionValue, $replacement);
+        }
+        return $optionValue;
+    }
 
-	/**
-	 * @throws \RuntimeException
-	 */
-	protected function checkPlaceholder(): void {
-		$this->sanitizedPlaceholder = trim(strtolower($this->placeholder));
-		if (!(bool)\preg_match('/^[a-z0-9]*$/', $this->sanitizedPlaceholder)) {
-			throw new \RuntimeException(sprintf(
-				'Invalid placeholder %s, only [a-z0-9] are allowed', $this->sanitizedPlaceholder
-			));
-		}
-		if ($this->sanitizedPlaceholder === '') {
-			throw new \RuntimeException('Invalid empty placeholder');
-		}
-	}
+    /**
+     * @throws \RuntimeException
+     */
+    protected function checkPlaceholder(): void {
+        $this->sanitizedPlaceholder = trim(strtolower($this->placeholder));
+        if (!(bool)\preg_match('/^[a-z0-9]*$/', $this->sanitizedPlaceholder)) {
+            throw new \RuntimeException(sprintf(
+                'Invalid placeholder %s, only [a-z0-9] are allowed', $this->sanitizedPlaceholder
+            ));
+        }
+        if ($this->sanitizedPlaceholder === '') {
+            throw new \RuntimeException('Invalid empty placeholder');
+        }
+    }
 
-	/**
-	 * @param mixed $value
-	 * @param string $replacement
-	 * @return mixed
-	 */
-	protected function substituteIfString($value, string $replacement) {
-		if (is_string($value)) {
-			return str_ireplace('$' . $this->sanitizedPlaceholder, $replacement, $value);
-		}
-		return $value;
-	}
+    /**
+     * @param mixed $value
+     * @param string $replacement
+     * @return mixed
+     */
+    protected function substituteIfString($value, string $replacement) {
+        if (is_string($value)) {
+            return str_ireplace('$' . $this->sanitizedPlaceholder, $replacement, $value);
+        }
+        return $value;
+    }
 }

Spacing +2 added lines, -2 removed lines

@@ -63,7 +63,7 @@ 
 	 */
 	protected function checkPlaceholder(): void {
 		$this->sanitizedPlaceholder = trim(strtolower($this->placeholder));
-		if (!(bool)\preg_match('/^[a-z0-9]*$/', $this->sanitizedPlaceholder)) {
+		if (!(bool) \preg_match('/^[a-z0-9]*$/', $this->sanitizedPlaceholder)) {
 			throw new \RuntimeException(sprintf(
 				'Invalid placeholder %s, only [a-z0-9] are allowed', $this->sanitizedPlaceholder
 			));
@@ -80,7 +80,7 @@ 
 	 */
 	protected function substituteIfString($value, string $replacement) {
 		if (is_string($value)) {
-			return str_ireplace('$' . $this->sanitizedPlaceholder, $replacement, $value);
+			return str_ireplace('$'.$this->sanitizedPlaceholder, $replacement, $value);
 		}
 		return $value;
 	}

apps/files_external/lib/Config/UserContext.php

Indentation +44 added lines, -44 removed lines

@@ -33,58 +33,58 @@
 
 class UserContext {
 
-	/** @var IUserSession */
-	private $session;
+    /** @var IUserSession */
+    private $session;
 
-	/** @var ShareManager */
-	private $shareManager;
+    /** @var ShareManager */
+    private $shareManager;
 
-	/** @var IRequest */
-	private $request;
+    /** @var IRequest */
+    private $request;
 
-	/** @var string */
-	private $userId;
+    /** @var string */
+    private $userId;
 
-	/** @var IUserManager */
-	private $userManager;
+    /** @var IUserManager */
+    private $userManager;
 
-	public function __construct(IUserSession $session, ShareManager $manager, IRequest $request, IUserManager $userManager) {
-		$this->session = $session;
-		$this->shareManager = $manager;
-		$this->request = $request;
-		$this->userManager = $userManager;
-	}
+    public function __construct(IUserSession $session, ShareManager $manager, IRequest $request, IUserManager $userManager) {
+        $this->session = $session;
+        $this->shareManager = $manager;
+        $this->request = $request;
+        $this->userManager = $userManager;
+    }
 
-	public function getSession(): IUserSession {
-		return $this->session;
-	}
+    public function getSession(): IUserSession {
+        return $this->session;
+    }
 
-	public function setUserId(string $userId): void {
-		$this->userId = $userId;
-	}
+    public function setUserId(string $userId): void {
+        $this->userId = $userId;
+    }
 
-	protected function getUserId(): ?string {
-		if ($this->userId !== null) {
-			return $this->userId;
-		}
-		if ($this->session && $this->session->getUser() !== null) {
-			return $this->session->getUser()->getUID();
-		}
-		try {
-			$shareToken = $this->request->getParam('token');
-			$share = $this->shareManager->getShareByToken($shareToken);
-			return $share->getShareOwner();
-		} catch (ShareNotFound $e) {
-		}
+    protected function getUserId(): ?string {
+        if ($this->userId !== null) {
+            return $this->userId;
+        }
+        if ($this->session && $this->session->getUser() !== null) {
+            return $this->session->getUser()->getUID();
+        }
+        try {
+            $shareToken = $this->request->getParam('token');
+            $share = $this->shareManager->getShareByToken($shareToken);
+            return $share->getShareOwner();
+        } catch (ShareNotFound $e) {
+        }
 
-		return null;
-	}
+        return null;
+    }
 
-	protected function getUser(): ?IUser {
-		$userId = $this->getUserId();
-		if ($userId !== null) {
-			return $this->userManager->get($userId);
-		}
-		return null;
-	}
+    protected function getUser(): ?IUser {
+        $userId = $this->getUserId();
+        if ($userId !== null) {
+            return $this->userManager->get($userId);
+        }
+        return null;
+    }
 }

apps/files_external/lib/Service/BackendService.php

Spacing +4 added lines, -4 removed lines

@@ -216,7 +216,7 @@ 
 	 * @return Backend[]
 	 */
 	public function getAvailableBackends() {
-		return array_filter($this->getBackends(), function ($backend) {
+		return array_filter($this->getBackends(), function($backend) {
 			return !$backend->checkDependencies();
 		});
 	}
@@ -255,7 +255,7 @@ 
 	 * @return AuthMechanism[]
 	 */
 	public function getAuthMechanismsByScheme(array $schemes) {
-		return array_filter($this->getAuthMechanisms(), function ($authMech) use ($schemes) {
+		return array_filter($this->getAuthMechanisms(), function($authMech) use ($schemes) {
 			return in_array($authMech->getScheme(), $schemes, true);
 		});
 	}
@@ -322,7 +322,7 @@ 
 	 */
 	public function registerConfigHandler(string $placeholder, callable $configHandlerLoader) {
 		$placeholder = trim(strtolower($placeholder));
-		if (!(bool)\preg_match('/^[a-z0-9]*$/', $placeholder)) {
+		if (!(bool) \preg_match('/^[a-z0-9]*$/', $placeholder)) {
 			throw new \RuntimeException(sprintf(
 				'Invalid placeholder %s, only [a-z0-9] are allowed', $placeholder
 			));
@@ -353,7 +353,7 @@ 
 		if ($newLoaded) {
 			// ensure those with longest placeholders come first,
 			// to avoid substring matches
-			uksort($this->configHandlers, function ($phA, $phB) {
+			uksort($this->configHandlers, function($phA, $phB) {
 				return strlen($phB) <=> strlen($phA);
 			});
 		}

Indentation +326 added lines, -326 removed lines

@@ -40,330 +40,330 @@
  */
 class BackendService {
 
-	/** Visibility constants for VisibilityTrait */
-	public const VISIBILITY_NONE = 0;
-	public const VISIBILITY_PERSONAL = 1;
-	public const VISIBILITY_ADMIN = 2;
-	//const VISIBILITY_ALIENS = 4;
-
-	public const VISIBILITY_DEFAULT = 3; // PERSONAL | ADMIN
-
-	/** Priority constants for PriorityTrait */
-	public const PRIORITY_DEFAULT = 100;
-
-	/** @var IConfig */
-	protected $config;
-
-	/** @var bool */
-	private $userMountingAllowed = true;
-
-	/** @var string[] */
-	private $userMountingBackends = [];
-
-	/** @var Backend[] */
-	private $backends = [];
-
-	/** @var IBackendProvider[] */
-	private $backendProviders = [];
-
-	/** @var AuthMechanism[] */
-	private $authMechanisms = [];
-
-	/** @var IAuthMechanismProvider[] */
-	private $authMechanismProviders = [];
-
-	/** @var callable[] */
-	private $configHandlerLoaders = [];
-
-	private $configHandlers = [];
-
-	/**
-	 * @param IConfig $config
-	 */
-	public function __construct(
-		IConfig $config
-	) {
-		$this->config = $config;
-
-		// Load config values
-		if ($this->config->getAppValue('files_external', 'allow_user_mounting', 'yes') !== 'yes') {
-			$this->userMountingAllowed = false;
-		}
-		$this->userMountingBackends = explode(',',
-			$this->config->getAppValue('files_external', 'user_mounting_backends', '')
-		);
-
-		// if no backend is in the list an empty string is in the array and user mounting is disabled
-		if ($this->userMountingBackends === ['']) {
-			$this->userMountingAllowed = false;
-		}
-	}
-
-	/**
-	 * Register a backend provider
-	 *
-	 * @since 9.1.0
-	 * @param IBackendProvider $provider
-	 */
-	public function registerBackendProvider(IBackendProvider $provider) {
-		$this->backendProviders[] = $provider;
-	}
-
-	private function callForRegistrations() {
-		static $eventSent = false;
-		if (!$eventSent) {
-			\OC::$server->getEventDispatcher()->dispatch(
-				'OCA\\Files_External::loadAdditionalBackends',
-				new GenericEvent()
-			);
-			$eventSent = true;
-		}
-	}
-
-	private function loadBackendProviders() {
-		$this->callForRegistrations();
-		foreach ($this->backendProviders as $provider) {
-			$this->registerBackends($provider->getBackends());
-		}
-		$this->backendProviders = [];
-	}
-
-	/**
-	 * Register an auth mechanism provider
-	 *
-	 * @since 9.1.0
-	 * @param IAuthMechanismProvider $provider
-	 */
-	public function registerAuthMechanismProvider(IAuthMechanismProvider $provider) {
-		$this->authMechanismProviders[] = $provider;
-	}
-
-	private function loadAuthMechanismProviders() {
-		$this->callForRegistrations();
-		foreach ($this->authMechanismProviders as $provider) {
-			$this->registerAuthMechanisms($provider->getAuthMechanisms());
-		}
-		$this->authMechanismProviders = [];
-	}
-
-	/**
-	 * Register a backend
-	 *
-	 * @deprecated 9.1.0 use registerBackendProvider()
-	 * @param Backend $backend
-	 */
-	public function registerBackend(Backend $backend) {
-		if (!$this->isAllowedUserBackend($backend)) {
-			$backend->removeVisibility(BackendService::VISIBILITY_PERSONAL);
-		}
-		foreach ($backend->getIdentifierAliases() as $alias) {
-			$this->backends[$alias] = $backend;
-		}
-	}
-
-	/**
-	 * @deprecated 9.1.0 use registerBackendProvider()
-	 * @param Backend[] $backends
-	 */
-	public function registerBackends(array $backends) {
-		foreach ($backends as $backend) {
-			$this->registerBackend($backend);
-		}
-	}
-	/**
-	 * Register an authentication mechanism
-	 *
-	 * @deprecated 9.1.0 use registerAuthMechanismProvider()
-	 * @param AuthMechanism $authMech
-	 */
-	public function registerAuthMechanism(AuthMechanism $authMech) {
-		if (!$this->isAllowedAuthMechanism($authMech)) {
-			$authMech->removeVisibility(BackendService::VISIBILITY_PERSONAL);
-		}
-		foreach ($authMech->getIdentifierAliases() as $alias) {
-			$this->authMechanisms[$alias] = $authMech;
-		}
-	}
-
-	/**
-	 * @deprecated 9.1.0 use registerAuthMechanismProvider()
-	 * @param AuthMechanism[] $mechanisms
-	 */
-	public function registerAuthMechanisms(array $mechanisms) {
-		foreach ($mechanisms as $mechanism) {
-			$this->registerAuthMechanism($mechanism);
-		}
-	}
-
-	/**
-	 * Get all backends
-	 *
-	 * @return Backend[]
-	 */
-	public function getBackends() {
-		$this->loadBackendProviders();
-		// only return real identifiers, no aliases
-		$backends = [];
-		foreach ($this->backends as $backend) {
-			$backends[$backend->getIdentifier()] = $backend;
-		}
-		return $backends;
-	}
-
-	/**
-	 * Get all available backends
-	 *
-	 * @return Backend[]
-	 */
-	public function getAvailableBackends() {
-		return array_filter($this->getBackends(), function ($backend) {
-			return !$backend->checkDependencies();
-		});
-	}
-
-	/**
-	 * @param string $identifier
-	 * @return Backend|null
-	 */
-	public function getBackend($identifier) {
-		$this->loadBackendProviders();
-		if (isset($this->backends[$identifier])) {
-			return $this->backends[$identifier];
-		}
-		return null;
-	}
-
-	/**
-	 * Get all authentication mechanisms
-	 *
-	 * @return AuthMechanism[]
-	 */
-	public function getAuthMechanisms() {
-		$this->loadAuthMechanismProviders();
-		// only return real identifiers, no aliases
-		$mechanisms = [];
-		foreach ($this->authMechanisms as $mechanism) {
-			$mechanisms[$mechanism->getIdentifier()] = $mechanism;
-		}
-		return $mechanisms;
-	}
-
-	/**
-	 * Get all authentication mechanisms for schemes
-	 *
-	 * @param string[] $schemes
-	 * @return AuthMechanism[]
-	 */
-	public function getAuthMechanismsByScheme(array $schemes) {
-		return array_filter($this->getAuthMechanisms(), function ($authMech) use ($schemes) {
-			return in_array($authMech->getScheme(), $schemes, true);
-		});
-	}
-
-	/**
-	 * @param string $identifier
-	 * @return AuthMechanism|null
-	 */
-	public function getAuthMechanism($identifier) {
-		$this->loadAuthMechanismProviders();
-		if (isset($this->authMechanisms[$identifier])) {
-			return $this->authMechanisms[$identifier];
-		}
-		return null;
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isUserMountingAllowed() {
-		return $this->userMountingAllowed;
-	}
-
-	/**
-	 * Check a backend if a user is allowed to mount it
-	 *
-	 * @param Backend $backend
-	 * @return bool
-	 */
-	protected function isAllowedUserBackend(Backend $backend) {
-		if ($this->userMountingAllowed &&
-			array_intersect($backend->getIdentifierAliases(), $this->userMountingBackends)
-		) {
-			return true;
-		}
-		return false;
-	}
-
-	/**
-	 * Check an authentication mechanism if a user is allowed to use it
-	 *
-	 * @param AuthMechanism $authMechanism
-	 * @return bool
-	 */
-	protected function isAllowedAuthMechanism(AuthMechanism $authMechanism) {
-		return true; // not implemented
-	}
-
-	/**
-	 * registers a configuration handler
-	 *
-	 * The function of the provided $placeholder is mostly to act a sorting
-	 * criteria, so longer placeholders are replaced first. This avoids
-	 * "$user" overwriting parts of "$userMail" and "$userLang", for example.
-	 * The provided value should not contain the $ prefix, only a-z0-9 are
-	 * allowed. Upper case letters are lower cased, the replacement is case-
-	 * insensitive.
-	 *
-	 * The configHandlerLoader should just instantiate the handler on demand.
-	 * For now all handlers are instantiated when a mount is loaded, independent
-	 * of whether the placeholder is present or not. This may change in future.
-	 *
-	 * @since 16.0.0
-	 */
-	public function registerConfigHandler(string $placeholder, callable $configHandlerLoader) {
-		$placeholder = trim(strtolower($placeholder));
-		if (!(bool)\preg_match('/^[a-z0-9]*$/', $placeholder)) {
-			throw new \RuntimeException(sprintf(
-				'Invalid placeholder %s, only [a-z0-9] are allowed', $placeholder
-			));
-		}
-		if ($placeholder === '') {
-			throw new \RuntimeException('Invalid empty placeholder');
-		}
-		if (isset($this->configHandlerLoaders[$placeholder]) || isset($this->configHandlers[$placeholder])) {
-			throw new \RuntimeException(sprintf('A handler is already registered for %s', $placeholder));
-		}
-		$this->configHandlerLoaders[$placeholder] = $configHandlerLoader;
-	}
-
-	protected function loadConfigHandlers():void {
-		$this->callForRegistrations();
-		$newLoaded = false;
-		foreach ($this->configHandlerLoaders as $placeholder => $loader) {
-			$handler = $loader();
-			if (!$handler instanceof IConfigHandler) {
-				throw new \RuntimeException(sprintf(
-					'Handler for %s is not an instance of IConfigHandler', $placeholder
-				));
-			}
-			$this->configHandlers[$placeholder] = $handler;
-			$newLoaded = true;
-		}
-		$this->configHandlerLoaders = [];
-		if ($newLoaded) {
-			// ensure those with longest placeholders come first,
-			// to avoid substring matches
-			uksort($this->configHandlers, function ($phA, $phB) {
-				return strlen($phB) <=> strlen($phA);
-			});
-		}
-	}
-
-	/**
-	 * @since 16.0.0
-	 */
-	public function getConfigHandlers() {
-		$this->loadConfigHandlers();
-		return $this->configHandlers;
-	}
+    /** Visibility constants for VisibilityTrait */
+    public const VISIBILITY_NONE = 0;
+    public const VISIBILITY_PERSONAL = 1;
+    public const VISIBILITY_ADMIN = 2;
+    //const VISIBILITY_ALIENS = 4;
+
+    public const VISIBILITY_DEFAULT = 3; // PERSONAL | ADMIN
+
+    /** Priority constants for PriorityTrait */
+    public const PRIORITY_DEFAULT = 100;
+
+    /** @var IConfig */
+    protected $config;
+
+    /** @var bool */
+    private $userMountingAllowed = true;
+
+    /** @var string[] */
+    private $userMountingBackends = [];
+
+    /** @var Backend[] */
+    private $backends = [];
+
+    /** @var IBackendProvider[] */
+    private $backendProviders = [];
+
+    /** @var AuthMechanism[] */
+    private $authMechanisms = [];
+
+    /** @var IAuthMechanismProvider[] */
+    private $authMechanismProviders = [];
+
+    /** @var callable[] */
+    private $configHandlerLoaders = [];
+
+    private $configHandlers = [];
+
+    /**
+     * @param IConfig $config
+     */
+    public function __construct(
+        IConfig $config
+    ) {
+        $this->config = $config;
+
+        // Load config values
+        if ($this->config->getAppValue('files_external', 'allow_user_mounting', 'yes') !== 'yes') {
+            $this->userMountingAllowed = false;
+        }
+        $this->userMountingBackends = explode(',',
+            $this->config->getAppValue('files_external', 'user_mounting_backends', '')
+        );
+
+        // if no backend is in the list an empty string is in the array and user mounting is disabled
+        if ($this->userMountingBackends === ['']) {
+            $this->userMountingAllowed = false;
+        }
+    }
+
+    /**
+     * Register a backend provider
+     *
+     * @since 9.1.0
+     * @param IBackendProvider $provider
+     */
+    public function registerBackendProvider(IBackendProvider $provider) {
+        $this->backendProviders[] = $provider;
+    }
+
+    private function callForRegistrations() {
+        static $eventSent = false;
+        if (!$eventSent) {
+            \OC::$server->getEventDispatcher()->dispatch(
+                'OCA\\Files_External::loadAdditionalBackends',
+                new GenericEvent()
+            );
+            $eventSent = true;
+        }
+    }
+
+    private function loadBackendProviders() {
+        $this->callForRegistrations();
+        foreach ($this->backendProviders as $provider) {
+            $this->registerBackends($provider->getBackends());
+        }
+        $this->backendProviders = [];
+    }
+
+    /**
+     * Register an auth mechanism provider
+     *
+     * @since 9.1.0
+     * @param IAuthMechanismProvider $provider
+     */
+    public function registerAuthMechanismProvider(IAuthMechanismProvider $provider) {
+        $this->authMechanismProviders[] = $provider;
+    }
+
+    private function loadAuthMechanismProviders() {
+        $this->callForRegistrations();
+        foreach ($this->authMechanismProviders as $provider) {
+            $this->registerAuthMechanisms($provider->getAuthMechanisms());
+        }
+        $this->authMechanismProviders = [];
+    }
+
+    /**
+     * Register a backend
+     *
+     * @deprecated 9.1.0 use registerBackendProvider()
+     * @param Backend $backend
+     */
+    public function registerBackend(Backend $backend) {
+        if (!$this->isAllowedUserBackend($backend)) {
+            $backend->removeVisibility(BackendService::VISIBILITY_PERSONAL);
+        }
+        foreach ($backend->getIdentifierAliases() as $alias) {
+            $this->backends[$alias] = $backend;
+        }
+    }
+
+    /**
+     * @deprecated 9.1.0 use registerBackendProvider()
+     * @param Backend[] $backends
+     */
+    public function registerBackends(array $backends) {
+        foreach ($backends as $backend) {
+            $this->registerBackend($backend);
+        }
+    }
+    /**
+     * Register an authentication mechanism
+     *
+     * @deprecated 9.1.0 use registerAuthMechanismProvider()
+     * @param AuthMechanism $authMech
+     */
+    public function registerAuthMechanism(AuthMechanism $authMech) {
+        if (!$this->isAllowedAuthMechanism($authMech)) {
+            $authMech->removeVisibility(BackendService::VISIBILITY_PERSONAL);
+        }
+        foreach ($authMech->getIdentifierAliases() as $alias) {
+            $this->authMechanisms[$alias] = $authMech;
+        }
+    }
+
+    /**
+     * @deprecated 9.1.0 use registerAuthMechanismProvider()
+     * @param AuthMechanism[] $mechanisms
+     */
+    public function registerAuthMechanisms(array $mechanisms) {
+        foreach ($mechanisms as $mechanism) {
+            $this->registerAuthMechanism($mechanism);
+        }
+    }
+
+    /**
+     * Get all backends
+     *
+     * @return Backend[]
+     */
+    public function getBackends() {
+        $this->loadBackendProviders();
+        // only return real identifiers, no aliases
+        $backends = [];
+        foreach ($this->backends as $backend) {
+            $backends[$backend->getIdentifier()] = $backend;
+        }
+        return $backends;
+    }
+
+    /**
+     * Get all available backends
+     *
+     * @return Backend[]
+     */
+    public function getAvailableBackends() {
+        return array_filter($this->getBackends(), function ($backend) {
+            return !$backend->checkDependencies();
+        });
+    }
+
+    /**
+     * @param string $identifier
+     * @return Backend|null
+     */
+    public function getBackend($identifier) {
+        $this->loadBackendProviders();
+        if (isset($this->backends[$identifier])) {
+            return $this->backends[$identifier];
+        }
+        return null;
+    }
+
+    /**
+     * Get all authentication mechanisms
+     *
+     * @return AuthMechanism[]
+     */
+    public function getAuthMechanisms() {
+        $this->loadAuthMechanismProviders();
+        // only return real identifiers, no aliases
+        $mechanisms = [];
+        foreach ($this->authMechanisms as $mechanism) {
+            $mechanisms[$mechanism->getIdentifier()] = $mechanism;
+        }
+        return $mechanisms;
+    }
+
+    /**
+     * Get all authentication mechanisms for schemes
+     *
+     * @param string[] $schemes
+     * @return AuthMechanism[]
+     */
+    public function getAuthMechanismsByScheme(array $schemes) {
+        return array_filter($this->getAuthMechanisms(), function ($authMech) use ($schemes) {
+            return in_array($authMech->getScheme(), $schemes, true);
+        });
+    }
+
+    /**
+     * @param string $identifier
+     * @return AuthMechanism|null
+     */
+    public function getAuthMechanism($identifier) {
+        $this->loadAuthMechanismProviders();
+        if (isset($this->authMechanisms[$identifier])) {
+            return $this->authMechanisms[$identifier];
+        }
+        return null;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isUserMountingAllowed() {
+        return $this->userMountingAllowed;
+    }
+
+    /**
+     * Check a backend if a user is allowed to mount it
+     *
+     * @param Backend $backend
+     * @return bool
+     */
+    protected function isAllowedUserBackend(Backend $backend) {
+        if ($this->userMountingAllowed &&
+            array_intersect($backend->getIdentifierAliases(), $this->userMountingBackends)
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Check an authentication mechanism if a user is allowed to use it
+     *
+     * @param AuthMechanism $authMechanism
+     * @return bool
+     */
+    protected function isAllowedAuthMechanism(AuthMechanism $authMechanism) {
+        return true; // not implemented
+    }
+
+    /**
+     * registers a configuration handler
+     *
+     * The function of the provided $placeholder is mostly to act a sorting
+     * criteria, so longer placeholders are replaced first. This avoids
+     * "$user" overwriting parts of "$userMail" and "$userLang", for example.
+     * The provided value should not contain the $ prefix, only a-z0-9 are
+     * allowed. Upper case letters are lower cased, the replacement is case-
+     * insensitive.
+     *
+     * The configHandlerLoader should just instantiate the handler on demand.
+     * For now all handlers are instantiated when a mount is loaded, independent
+     * of whether the placeholder is present or not. This may change in future.
+     *
+     * @since 16.0.0
+     */
+    public function registerConfigHandler(string $placeholder, callable $configHandlerLoader) {
+        $placeholder = trim(strtolower($placeholder));
+        if (!(bool)\preg_match('/^[a-z0-9]*$/', $placeholder)) {
+            throw new \RuntimeException(sprintf(
+                'Invalid placeholder %s, only [a-z0-9] are allowed', $placeholder
+            ));
+        }
+        if ($placeholder === '') {
+            throw new \RuntimeException('Invalid empty placeholder');
+        }
+        if (isset($this->configHandlerLoaders[$placeholder]) || isset($this->configHandlers[$placeholder])) {
+            throw new \RuntimeException(sprintf('A handler is already registered for %s', $placeholder));
+        }
+        $this->configHandlerLoaders[$placeholder] = $configHandlerLoader;
+    }
+
+    protected function loadConfigHandlers():void {
+        $this->callForRegistrations();
+        $newLoaded = false;
+        foreach ($this->configHandlerLoaders as $placeholder => $loader) {
+            $handler = $loader();
+            if (!$handler instanceof IConfigHandler) {
+                throw new \RuntimeException(sprintf(
+                    'Handler for %s is not an instance of IConfigHandler', $placeholder
+                ));
+            }
+            $this->configHandlers[$placeholder] = $handler;
+            $newLoaded = true;
+        }
+        $this->configHandlerLoaders = [];
+        if ($newLoaded) {
+            // ensure those with longest placeholders come first,
+            // to avoid substring matches
+            uksort($this->configHandlers, function ($phA, $phB) {
+                return strlen($phB) <=> strlen($phA);
+            });
+        }
+    }
+
+    /**
+     * @since 16.0.0
+     */
+    public function getConfigHandlers() {
+        $this->loadConfigHandlers();
+        return $this->configHandlers;
+    }
 }