nextcloud / server

lib/private/Encryption/EncryptionWrapper.php

Indentation +58 added lines, -58 removed lines

@@ -26,68 +26,68 @@
  * @package OC\Encryption
  */
 class EncryptionWrapper {
-	/** @var ArrayCache */
-	private $arrayCache;
+    /** @var ArrayCache */
+    private $arrayCache;
 
-	/** @var Manager */
-	private $manager;
+    /** @var Manager */
+    private $manager;
 
-	private LoggerInterface $logger;
+    private LoggerInterface $logger;
 
-	/**
-	 * EncryptionWrapper constructor.
-	 */
-	public function __construct(ArrayCache $arrayCache,
-		Manager $manager,
-		LoggerInterface $logger,
-	) {
-		$this->arrayCache = $arrayCache;
-		$this->manager = $manager;
-		$this->logger = $logger;
-	}
+    /**
+     * EncryptionWrapper constructor.
+     */
+    public function __construct(ArrayCache $arrayCache,
+        Manager $manager,
+        LoggerInterface $logger,
+    ) {
+        $this->arrayCache = $arrayCache;
+        $this->manager = $manager;
+        $this->logger = $logger;
+    }
 
-	/**
-	 * Wraps the given storage when it is not a shared storage
-	 *
-	 * @param string $mountPoint
-	 * @param IStorage $storage
-	 * @param IMountPoint $mount
-	 * @param bool $force apply the wrapper even if the storage normally has encryption disabled, helpful for repair steps
-	 * @return Encryption|IStorage
-	 */
-	public function wrapStorage(string $mountPoint, IStorage $storage, IMountPoint $mount, bool $force = false) {
-		$parameters = [
-			'storage' => $storage,
-			'mountPoint' => $mountPoint,
-			'mount' => $mount
-		];
+    /**
+     * Wraps the given storage when it is not a shared storage
+     *
+     * @param string $mountPoint
+     * @param IStorage $storage
+     * @param IMountPoint $mount
+     * @param bool $force apply the wrapper even if the storage normally has encryption disabled, helpful for repair steps
+     * @return Encryption|IStorage
+     */
+    public function wrapStorage(string $mountPoint, IStorage $storage, IMountPoint $mount, bool $force = false) {
+        $parameters = [
+            'storage' => $storage,
+            'mountPoint' => $mountPoint,
+            'mount' => $mount
+        ];
 
-		if ($force || (!$storage->instanceOfStorage(IDisableEncryptionStorage::class) && $mountPoint !== '/')) {
-			$user = \OC::$server->getUserSession()->getUser();
-			$mountManager = Filesystem::getMountManager();
-			$uid = $user ? $user->getUID() : null;
-			$fileHelper = \OC::$server->get(IFile::class);
-			$keyStorage = \OC::$server->get(EncryptionKeysStorage::class);
+        if ($force || (!$storage->instanceOfStorage(IDisableEncryptionStorage::class) && $mountPoint !== '/')) {
+            $user = \OC::$server->getUserSession()->getUser();
+            $mountManager = Filesystem::getMountManager();
+            $uid = $user ? $user->getUID() : null;
+            $fileHelper = \OC::$server->get(IFile::class);
+            $keyStorage = \OC::$server->get(EncryptionKeysStorage::class);
 
-			$util = new Util(
-				new View(),
-				\OC::$server->getUserManager(),
-				\OC::$server->getGroupManager(),
-				\OC::$server->getConfig()
-			);
-			return new Encryption(
-				$parameters,
-				$this->manager,
-				$util,
-				$this->logger,
-				$fileHelper,
-				$uid,
-				$keyStorage,
-				$mountManager,
-				$this->arrayCache
-			);
-		} else {
-			return $storage;
-		}
-	}
+            $util = new Util(
+                new View(),
+                \OC::$server->getUserManager(),
+                \OC::$server->getGroupManager(),
+                \OC::$server->getConfig()
+            );
+            return new Encryption(
+                $parameters,
+                $this->manager,
+                $util,
+                $this->logger,
+                $fileHelper,
+                $uid,
+                $keyStorage,
+                $mountManager,
+                $this->arrayCache
+            );
+        } else {
+            return $storage;
+        }
+    }
 }

lib/private/Encryption/Update.php

Indentation +84 added lines, -84 removed lines

@@ -22,97 +22,97 @@
  * update encrypted files, e.g. because a file was shared
  */
 class Update {
-	public function __construct(
-		protected Util $util,
-		protected Manager $encryptionManager,
-		protected File $file,
-		protected LoggerInterface $logger,
-		protected string $uid,
-	) {
-	}
+    public function __construct(
+        protected Util $util,
+        protected Manager $encryptionManager,
+        protected File $file,
+        protected LoggerInterface $logger,
+        protected string $uid,
+    ) {
+    }
 
-	/**
-	 * hook after file was shared
-	 */
-	public function postShared(OCPFile|Folder $node): void {
-		$this->update($node);
-	}
+    /**
+     * hook after file was shared
+     */
+    public function postShared(OCPFile|Folder $node): void {
+        $this->update($node);
+    }
 
-	/**
-	 * hook after file was unshared
-	 */
-	public function postUnshared(OCPFile|Folder $node): void {
-		$this->update($node);
-	}
+    /**
+     * hook after file was unshared
+     */
+    public function postUnshared(OCPFile|Folder $node): void {
+        $this->update($node);
+    }
 
-	/**
-	 * inform encryption module that a file was restored from the trash bin,
-	 * e.g. to update the encryption keys
-	 */
-	public function postRestore(OCPFile|Folder $node): void {
-		$this->update($node);
-	}
+    /**
+     * inform encryption module that a file was restored from the trash bin,
+     * e.g. to update the encryption keys
+     */
+    public function postRestore(OCPFile|Folder $node): void {
+        $this->update($node);
+    }
 
-	/**
-	 * inform encryption module that a file was renamed,
-	 * e.g. to update the encryption keys
-	 */
-	public function postRename(OCPFile|Folder $source, OCPFile|Folder $target): void {
-		if (dirname($source->getPath()) !== dirname($target->getPath())) {
-			$this->update($target);
-		}
-	}
+    /**
+     * inform encryption module that a file was renamed,
+     * e.g. to update the encryption keys
+     */
+    public function postRename(OCPFile|Folder $source, OCPFile|Folder $target): void {
+        if (dirname($source->getPath()) !== dirname($target->getPath())) {
+            $this->update($target);
+        }
+    }
 
-	/**
-	 * get owner and path relative to data/
-	 *
-	 * @throws \InvalidArgumentException
-	 */
-	protected function getOwnerPath(OCPFile|Folder $node): string {
-		$owner = $node->getOwner()?->getUID();
-		if ($owner === null) {
-			throw new InvalidArgumentException('No owner found for ' . $node->getId());
-		}
-		$view = new View('/' . $owner . '/files');
-		try {
-			$path = $view->getPath($node->getId());
-		} catch (NotFoundException $e) {
-			throw new InvalidArgumentException('No file found for ' . $node->getId(), previous:$e);
-		}
-		return '/' . $owner . '/files/' . $path;
-	}
+    /**
+     * get owner and path relative to data/
+     *
+     * @throws \InvalidArgumentException
+     */
+    protected function getOwnerPath(OCPFile|Folder $node): string {
+        $owner = $node->getOwner()?->getUID();
+        if ($owner === null) {
+            throw new InvalidArgumentException('No owner found for ' . $node->getId());
+        }
+        $view = new View('/' . $owner . '/files');
+        try {
+            $path = $view->getPath($node->getId());
+        } catch (NotFoundException $e) {
+            throw new InvalidArgumentException('No file found for ' . $node->getId(), previous:$e);
+        }
+        return '/' . $owner . '/files/' . $path;
+    }
 
-	/**
-	 * notify encryption module about added/removed users from a file/folder
-	 *
-	 * @param string $path relative to data/
-	 * @throws Exceptions\ModuleDoesNotExistsException
-	 */
-	public function update(OCPFile|Folder $node): void {
-		$encryptionModule = $this->encryptionManager->getEncryptionModule();
+    /**
+     * notify encryption module about added/removed users from a file/folder
+     *
+     * @param string $path relative to data/
+     * @throws Exceptions\ModuleDoesNotExistsException
+     */
+    public function update(OCPFile|Folder $node): void {
+        $encryptionModule = $this->encryptionManager->getEncryptionModule();
 
-		// if the encryption module doesn't encrypt the files on a per-user basis
-		// we have nothing to do here.
-		if ($encryptionModule->needDetailedAccessList() === false) {
-			return;
-		}
+        // if the encryption module doesn't encrypt the files on a per-user basis
+        // we have nothing to do here.
+        if ($encryptionModule->needDetailedAccessList() === false) {
+            return;
+        }
 
-		$path = $this->getOwnerPath($node);
-		// if a folder was shared, get a list of all (sub-)folders
-		if ($node instanceof Folder) {
-			$allFiles = $this->util->getAllFiles($path);
-		} else {
-			$allFiles = [$path];
-		}
+        $path = $this->getOwnerPath($node);
+        // if a folder was shared, get a list of all (sub-)folders
+        if ($node instanceof Folder) {
+            $allFiles = $this->util->getAllFiles($path);
+        } else {
+            $allFiles = [$path];
+        }
 
-		foreach ($allFiles as $file) {
-			$usersSharing = $this->file->getAccessList($file);
-			try {
-				$encryptionModule->update($file, $this->uid, $usersSharing);
-			} catch (GenericEncryptionException $e) {
-				// If the update of an individual file fails e.g. due to a corrupt key we should continue the operation and just log the failure
-				$this->logger->error('Failed to update encryption module for ' . $this->uid . ' ' . $file, [ 'exception' => $e ]);
-			}
-		}
-	}
+        foreach ($allFiles as $file) {
+            $usersSharing = $this->file->getAccessList($file);
+            try {
+                $encryptionModule->update($file, $this->uid, $usersSharing);
+            } catch (GenericEncryptionException $e) {
+                // If the update of an individual file fails e.g. due to a corrupt key we should continue the operation and just log the failure
+                $this->logger->error('Failed to update encryption module for ' . $this->uid . ' ' . $file, [ 'exception' => $e ]);
+            }
+        }
+    }
 }

lib/private/Encryption/Util.php

Indentation +366 added lines, -366 removed lines

@@ -20,370 +20,370 @@
 use OCP\IUserManager;
 
 class Util {
-	public const HEADER_START = 'HBEGIN';
-	public const HEADER_END = 'HEND';
-	public const HEADER_PADDING_CHAR = '-';
-
-	public const HEADER_ENCRYPTION_MODULE_KEY = 'oc_encryption_module';
-
-	/**
-	 * block size will always be 8192 for a PHP stream
-	 * @see https://bugs.php.net/bug.php?id=21641
-	 * @var integer
-	 */
-	protected $headerSize = 8192;
-
-	/**
-	 * block size will always be 8192 for a PHP stream
-	 * @see https://bugs.php.net/bug.php?id=21641
-	 * @var integer
-	 */
-	protected $blockSize = 8192;
-
-	/** @var View */
-	protected $rootView;
-
-	/** @var array */
-	protected $ocHeaderKeys;
-
-	/** @var IConfig */
-	protected $config;
-
-	/** @var array paths excluded from encryption */
-	protected array $excludedPaths = [];
-	protected IGroupManager $groupManager;
-	protected IUserManager $userManager;
-
-	/**
-	 *
-	 * @param View $rootView
-	 * @param IConfig $config
-	 */
-	public function __construct(
-		View $rootView,
-		IUserManager $userManager,
-		IGroupManager $groupManager,
-		IConfig $config) {
-		$this->ocHeaderKeys = [
-			self::HEADER_ENCRYPTION_MODULE_KEY
-		];
-
-		$this->rootView = $rootView;
-		$this->userManager = $userManager;
-		$this->groupManager = $groupManager;
-		$this->config = $config;
-
-		$this->excludedPaths[] = 'files_encryption';
-		$this->excludedPaths[] = 'appdata_' . $config->getSystemValueString('instanceid');
-		$this->excludedPaths[] = 'files_external';
-	}
-
-	/**
-	 * read encryption module ID from header
-	 *
-	 * @param array $header
-	 * @return string
-	 * @throws ModuleDoesNotExistsException
-	 */
-	public function getEncryptionModuleId(?array $header = null) {
-		$id = '';
-		$encryptionModuleKey = self::HEADER_ENCRYPTION_MODULE_KEY;
-
-		if (isset($header[$encryptionModuleKey])) {
-			$id = $header[$encryptionModuleKey];
-		} elseif (isset($header['cipher'])) {
-			if (class_exists('\OCA\Encryption\Crypto\Encryption')) {
-				// fall back to default encryption if the user migrated from
-				// ownCloud <= 8.0 with the old encryption
-				$id = \OCA\Encryption\Crypto\Encryption::ID;
-			} else {
-				throw new ModuleDoesNotExistsException('Default encryption module missing');
-			}
-		}
-
-		return $id;
-	}
-
-	/**
-	 * create header for encrypted file
-	 *
-	 * @param array $headerData
-	 * @param IEncryptionModule $encryptionModule
-	 * @return string
-	 * @throws EncryptionHeaderToLargeException if header has to many arguments
-	 * @throws EncryptionHeaderKeyExistsException if header key is already in use
-	 */
-	public function createHeader(array $headerData, IEncryptionModule $encryptionModule) {
-		$header = self::HEADER_START . ':' . self::HEADER_ENCRYPTION_MODULE_KEY . ':' . $encryptionModule->getId() . ':';
-		foreach ($headerData as $key => $value) {
-			if (in_array($key, $this->ocHeaderKeys)) {
-				throw new EncryptionHeaderKeyExistsException($key);
-			}
-			$header .= $key . ':' . $value . ':';
-		}
-		$header .= self::HEADER_END;
-
-		if (strlen($header) > $this->getHeaderSize()) {
-			throw new EncryptionHeaderToLargeException();
-		}
-
-		$paddedHeader = str_pad($header, $this->headerSize, self::HEADER_PADDING_CHAR, STR_PAD_RIGHT);
-
-		return $paddedHeader;
-	}
-
-	/**
-	 * go recursively through a dir and collect all files and sub files.
-	 *
-	 * @param string $dir relative to the users files folder
-	 * @return array with list of files relative to the users files folder
-	 */
-	public function getAllFiles($dir) {
-		$result = [];
-		$dirList = [$dir];
-
-		while ($dirList) {
-			$dir = array_pop($dirList);
-			$content = $this->rootView->getDirectoryContent($dir);
-
-			foreach ($content as $c) {
-				if ($c->getType() === 'dir') {
-					$dirList[] = $c->getPath();
-				} else {
-					$result[] = $c->getPath();
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * check if it is a file uploaded by the user stored in data/user/files
-	 * or a metadata file
-	 *
-	 * @param string $path relative to the data/ folder
-	 * @return boolean
-	 */
-	public function isFile($path) {
-		$parts = explode('/', Filesystem::normalizePath($path), 4);
-		if (isset($parts[2]) && $parts[2] === 'files') {
-			return true;
-		}
-		return false;
-	}
-
-	/**
-	 * return size of encryption header
-	 *
-	 * @return integer
-	 */
-	public function getHeaderSize() {
-		return $this->headerSize;
-	}
-
-	/**
-	 * return size of block read by a PHP stream
-	 *
-	 * @return integer
-	 */
-	public function getBlockSize() {
-		return $this->blockSize;
-	}
-
-	/**
-	 * get the owner and the path for the file relative to the owners files folder
-	 *
-	 * @param string $path
-	 * @return array{0: string, 1: string}
-	 * @throws \BadMethodCallException
-	 */
-	public function getUidAndFilename($path) {
-		$parts = explode('/', $path);
-		$uid = '';
-		if (count($parts) > 2) {
-			$uid = $parts[1];
-		}
-		if (!$this->userManager->userExists($uid)) {
-			throw new \BadMethodCallException(
-				'path needs to be relative to the system wide data folder and point to a user specific file'
-			);
-		}
-
-		$ownerPath = implode('/', array_slice($parts, 2));
-
-		return [$uid, Filesystem::normalizePath($ownerPath)];
-	}
-
-	/**
-	 * Remove .path extension from a file path
-	 * @param string $path Path that may identify a .part file
-	 * @return string File path without .part extension
-	 * @note this is needed for reusing keys
-	 */
-	public function stripPartialFileExtension($path) {
-		$extension = pathinfo($path, PATHINFO_EXTENSION);
-
-		if ($extension === 'part') {
-			$newLength = strlen($path) - 5; // 5 = strlen(".part")
-			$fPath = substr($path, 0, $newLength);
-
-			// if path also contains a transaction id, we remove it too
-			$extension = pathinfo($fPath, PATHINFO_EXTENSION);
-			if (substr($extension, 0, 12) === 'ocTransferId') { // 12 = strlen("ocTransferId")
-				$newLength = strlen($fPath) - strlen($extension) - 1;
-				$fPath = substr($fPath, 0, $newLength);
-			}
-			return $fPath;
-		} else {
-			return $path;
-		}
-	}
-
-	public function getUserWithAccessToMountPoint($users, $groups) {
-		$result = [];
-		if ($users === [] && $groups === []) {
-			$users = $this->userManager->search('', null, null);
-			$result = array_map(function (IUser $user) {
-				return $user->getUID();
-			}, $users);
-		} else {
-			$result = array_merge($result, $users);
-
-			$groupManager = $this->groupManager;
-			foreach ($groups as $group) {
-				$groupObject = $groupManager->get($group);
-				if ($groupObject) {
-					$foundUsers = $groupObject->searchUsers('', -1, 0);
-					$userIds = [];
-					foreach ($foundUsers as $user) {
-						$userIds[] = $user->getUID();
-					}
-					$result = array_merge($result, $userIds);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * check if the file is stored on a system wide mount point
-	 * @param string $path relative to /data/user with leading '/'
-	 * @param string $uid
-	 * @return boolean
-	 */
-	public function isSystemWideMountPoint(string $path, string $uid) {
-		$mount = Filesystem::getMountManager()->find('/' . $uid . $path);
-		return $mount instanceof ISystemMountPoint;
-	}
-
-	/**
-	 * check if it is a path which is excluded by ownCloud from encryption
-	 *
-	 * @param string $path
-	 * @return boolean
-	 */
-	public function isExcluded($path) {
-		$normalizedPath = Filesystem::normalizePath($path);
-		$root = explode('/', $normalizedPath, 4);
-		if (count($root) > 1) {
-			// detect alternative key storage root
-			$rootDir = $this->getKeyStorageRoot();
-			if ($rootDir !== '' &&
-				str_starts_with(Filesystem::normalizePath($path), Filesystem::normalizePath($rootDir))
-			) {
-				return true;
-			}
-
-
-			//detect system wide folders
-			if (in_array($root[1], $this->excludedPaths)) {
-				return true;
-			}
-
-			// detect user specific folders
-			if ($this->userManager->userExists($root[1])
-				&& in_array($root[2] ?? '', $this->excludedPaths)) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Check if recovery key is enabled for user
-	 */
-	public function recoveryEnabled(string $uid): bool {
-		$enabled = $this->config->getUserValue($uid, 'encryption', 'recovery_enabled', '0');
-
-		return $enabled === '1';
-	}
-
-	/**
-	 * Set new key storage root
-	 *
-	 * @param string $root new key store root relative to the data folder
-	 */
-	public function setKeyStorageRoot(string $root): void {
-		$this->config->setAppValue('core', 'encryption_key_storage_root', $root);
-	}
-
-	/**
-	 * Get key storage root
-	 *
-	 * @return string key storage root
-	 */
-	public function getKeyStorageRoot(): string {
-		return $this->config->getAppValue('core', 'encryption_key_storage_root', '');
-	}
-
-	/**
-	 * parse raw header to array
-	 *
-	 * @param string $rawHeader
-	 * @return array
-	 */
-	public function parseRawHeader(string $rawHeader) {
-		$result = [];
-		if (str_starts_with($rawHeader, Util::HEADER_START)) {
-			$header = $rawHeader;
-			$endAt = strpos($header, Util::HEADER_END);
-			if ($endAt !== false) {
-				$header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
-
-				// +1 to not start with an ':' which would result in empty element at the beginning
-				$exploded = explode(':', substr($header, strlen(Util::HEADER_START) + 1));
-
-				$element = array_shift($exploded);
-				while ($element !== Util::HEADER_END && $element !== null) {
-					$result[$element] = array_shift($exploded);
-					$element = array_shift($exploded);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * get path to key folder for a given file
-	 *
-	 * @param string $encryptionModuleId
-	 * @param string $path path to the file, relative to data/
-	 * @return string
-	 */
-	public function getFileKeyDir(string $encryptionModuleId, string $path): string {
-		[$owner, $filename] = $this->getUidAndFilename($path);
-		$root = $this->getKeyStorageRoot();
-
-		// in case of system-wide mount points the keys are stored directly in the data directory
-		if ($this->isSystemWideMountPoint($filename, $owner)) {
-			$keyPath = $root . '/' . '/files_encryption/keys' . $filename . '/';
-		} else {
-			$keyPath = $root . '/' . $owner . '/files_encryption/keys' . $filename . '/';
-		}
-
-		return Filesystem::normalizePath($keyPath . $encryptionModuleId . '/', false);
-	}
+    public const HEADER_START = 'HBEGIN';
+    public const HEADER_END = 'HEND';
+    public const HEADER_PADDING_CHAR = '-';
+
+    public const HEADER_ENCRYPTION_MODULE_KEY = 'oc_encryption_module';
+
+    /**
+     * block size will always be 8192 for a PHP stream
+     * @see https://bugs.php.net/bug.php?id=21641
+     * @var integer
+     */
+    protected $headerSize = 8192;
+
+    /**
+     * block size will always be 8192 for a PHP stream
+     * @see https://bugs.php.net/bug.php?id=21641
+     * @var integer
+     */
+    protected $blockSize = 8192;
+
+    /** @var View */
+    protected $rootView;
+
+    /** @var array */
+    protected $ocHeaderKeys;
+
+    /** @var IConfig */
+    protected $config;
+
+    /** @var array paths excluded from encryption */
+    protected array $excludedPaths = [];
+    protected IGroupManager $groupManager;
+    protected IUserManager $userManager;
+
+    /**
+     *
+     * @param View $rootView
+     * @param IConfig $config
+     */
+    public function __construct(
+        View $rootView,
+        IUserManager $userManager,
+        IGroupManager $groupManager,
+        IConfig $config) {
+        $this->ocHeaderKeys = [
+            self::HEADER_ENCRYPTION_MODULE_KEY
+        ];
+
+        $this->rootView = $rootView;
+        $this->userManager = $userManager;
+        $this->groupManager = $groupManager;
+        $this->config = $config;
+
+        $this->excludedPaths[] = 'files_encryption';
+        $this->excludedPaths[] = 'appdata_' . $config->getSystemValueString('instanceid');
+        $this->excludedPaths[] = 'files_external';
+    }
+
+    /**
+     * read encryption module ID from header
+     *
+     * @param array $header
+     * @return string
+     * @throws ModuleDoesNotExistsException
+     */
+    public function getEncryptionModuleId(?array $header = null) {
+        $id = '';
+        $encryptionModuleKey = self::HEADER_ENCRYPTION_MODULE_KEY;
+
+        if (isset($header[$encryptionModuleKey])) {
+            $id = $header[$encryptionModuleKey];
+        } elseif (isset($header['cipher'])) {
+            if (class_exists('\OCA\Encryption\Crypto\Encryption')) {
+                // fall back to default encryption if the user migrated from
+                // ownCloud <= 8.0 with the old encryption
+                $id = \OCA\Encryption\Crypto\Encryption::ID;
+            } else {
+                throw new ModuleDoesNotExistsException('Default encryption module missing');
+            }
+        }
+
+        return $id;
+    }
+
+    /**
+     * create header for encrypted file
+     *
+     * @param array $headerData
+     * @param IEncryptionModule $encryptionModule
+     * @return string
+     * @throws EncryptionHeaderToLargeException if header has to many arguments
+     * @throws EncryptionHeaderKeyExistsException if header key is already in use
+     */
+    public function createHeader(array $headerData, IEncryptionModule $encryptionModule) {
+        $header = self::HEADER_START . ':' . self::HEADER_ENCRYPTION_MODULE_KEY . ':' . $encryptionModule->getId() . ':';
+        foreach ($headerData as $key => $value) {
+            if (in_array($key, $this->ocHeaderKeys)) {
+                throw new EncryptionHeaderKeyExistsException($key);
+            }
+            $header .= $key . ':' . $value . ':';
+        }
+        $header .= self::HEADER_END;
+
+        if (strlen($header) > $this->getHeaderSize()) {
+            throw new EncryptionHeaderToLargeException();
+        }
+
+        $paddedHeader = str_pad($header, $this->headerSize, self::HEADER_PADDING_CHAR, STR_PAD_RIGHT);
+
+        return $paddedHeader;
+    }
+
+    /**
+     * go recursively through a dir and collect all files and sub files.
+     *
+     * @param string $dir relative to the users files folder
+     * @return array with list of files relative to the users files folder
+     */
+    public function getAllFiles($dir) {
+        $result = [];
+        $dirList = [$dir];
+
+        while ($dirList) {
+            $dir = array_pop($dirList);
+            $content = $this->rootView->getDirectoryContent($dir);
+
+            foreach ($content as $c) {
+                if ($c->getType() === 'dir') {
+                    $dirList[] = $c->getPath();
+                } else {
+                    $result[] = $c->getPath();
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * check if it is a file uploaded by the user stored in data/user/files
+     * or a metadata file
+     *
+     * @param string $path relative to the data/ folder
+     * @return boolean
+     */
+    public function isFile($path) {
+        $parts = explode('/', Filesystem::normalizePath($path), 4);
+        if (isset($parts[2]) && $parts[2] === 'files') {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * return size of encryption header
+     *
+     * @return integer
+     */
+    public function getHeaderSize() {
+        return $this->headerSize;
+    }
+
+    /**
+     * return size of block read by a PHP stream
+     *
+     * @return integer
+     */
+    public function getBlockSize() {
+        return $this->blockSize;
+    }
+
+    /**
+     * get the owner and the path for the file relative to the owners files folder
+     *
+     * @param string $path
+     * @return array{0: string, 1: string}
+     * @throws \BadMethodCallException
+     */
+    public function getUidAndFilename($path) {
+        $parts = explode('/', $path);
+        $uid = '';
+        if (count($parts) > 2) {
+            $uid = $parts[1];
+        }
+        if (!$this->userManager->userExists($uid)) {
+            throw new \BadMethodCallException(
+                'path needs to be relative to the system wide data folder and point to a user specific file'
+            );
+        }
+
+        $ownerPath = implode('/', array_slice($parts, 2));
+
+        return [$uid, Filesystem::normalizePath($ownerPath)];
+    }
+
+    /**
+     * Remove .path extension from a file path
+     * @param string $path Path that may identify a .part file
+     * @return string File path without .part extension
+     * @note this is needed for reusing keys
+     */
+    public function stripPartialFileExtension($path) {
+        $extension = pathinfo($path, PATHINFO_EXTENSION);
+
+        if ($extension === 'part') {
+            $newLength = strlen($path) - 5; // 5 = strlen(".part")
+            $fPath = substr($path, 0, $newLength);
+
+            // if path also contains a transaction id, we remove it too
+            $extension = pathinfo($fPath, PATHINFO_EXTENSION);
+            if (substr($extension, 0, 12) === 'ocTransferId') { // 12 = strlen("ocTransferId")
+                $newLength = strlen($fPath) - strlen($extension) - 1;
+                $fPath = substr($fPath, 0, $newLength);
+            }
+            return $fPath;
+        } else {
+            return $path;
+        }
+    }
+
+    public function getUserWithAccessToMountPoint($users, $groups) {
+        $result = [];
+        if ($users === [] && $groups === []) {
+            $users = $this->userManager->search('', null, null);
+            $result = array_map(function (IUser $user) {
+                return $user->getUID();
+            }, $users);
+        } else {
+            $result = array_merge($result, $users);
+
+            $groupManager = $this->groupManager;
+            foreach ($groups as $group) {
+                $groupObject = $groupManager->get($group);
+                if ($groupObject) {
+                    $foundUsers = $groupObject->searchUsers('', -1, 0);
+                    $userIds = [];
+                    foreach ($foundUsers as $user) {
+                        $userIds[] = $user->getUID();
+                    }
+                    $result = array_merge($result, $userIds);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * check if the file is stored on a system wide mount point
+     * @param string $path relative to /data/user with leading '/'
+     * @param string $uid
+     * @return boolean
+     */
+    public function isSystemWideMountPoint(string $path, string $uid) {
+        $mount = Filesystem::getMountManager()->find('/' . $uid . $path);
+        return $mount instanceof ISystemMountPoint;
+    }
+
+    /**
+     * check if it is a path which is excluded by ownCloud from encryption
+     *
+     * @param string $path
+     * @return boolean
+     */
+    public function isExcluded($path) {
+        $normalizedPath = Filesystem::normalizePath($path);
+        $root = explode('/', $normalizedPath, 4);
+        if (count($root) > 1) {
+            // detect alternative key storage root
+            $rootDir = $this->getKeyStorageRoot();
+            if ($rootDir !== '' &&
+                str_starts_with(Filesystem::normalizePath($path), Filesystem::normalizePath($rootDir))
+            ) {
+                return true;
+            }
+
+
+            //detect system wide folders
+            if (in_array($root[1], $this->excludedPaths)) {
+                return true;
+            }
+
+            // detect user specific folders
+            if ($this->userManager->userExists($root[1])
+                && in_array($root[2] ?? '', $this->excludedPaths)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if recovery key is enabled for user
+     */
+    public function recoveryEnabled(string $uid): bool {
+        $enabled = $this->config->getUserValue($uid, 'encryption', 'recovery_enabled', '0');
+
+        return $enabled === '1';
+    }
+
+    /**
+     * Set new key storage root
+     *
+     * @param string $root new key store root relative to the data folder
+     */
+    public function setKeyStorageRoot(string $root): void {
+        $this->config->setAppValue('core', 'encryption_key_storage_root', $root);
+    }
+
+    /**
+     * Get key storage root
+     *
+     * @return string key storage root
+     */
+    public function getKeyStorageRoot(): string {
+        return $this->config->getAppValue('core', 'encryption_key_storage_root', '');
+    }
+
+    /**
+     * parse raw header to array
+     *
+     * @param string $rawHeader
+     * @return array
+     */
+    public function parseRawHeader(string $rawHeader) {
+        $result = [];
+        if (str_starts_with($rawHeader, Util::HEADER_START)) {
+            $header = $rawHeader;
+            $endAt = strpos($header, Util::HEADER_END);
+            if ($endAt !== false) {
+                $header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
+
+                // +1 to not start with an ':' which would result in empty element at the beginning
+                $exploded = explode(':', substr($header, strlen(Util::HEADER_START) + 1));
+
+                $element = array_shift($exploded);
+                while ($element !== Util::HEADER_END && $element !== null) {
+                    $result[$element] = array_shift($exploded);
+                    $element = array_shift($exploded);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * get path to key folder for a given file
+     *
+     * @param string $encryptionModuleId
+     * @param string $path path to the file, relative to data/
+     * @return string
+     */
+    public function getFileKeyDir(string $encryptionModuleId, string $path): string {
+        [$owner, $filename] = $this->getUidAndFilename($path);
+        $root = $this->getKeyStorageRoot();
+
+        // in case of system-wide mount points the keys are stored directly in the data directory
+        if ($this->isSystemWideMountPoint($filename, $owner)) {
+            $keyPath = $root . '/' . '/files_encryption/keys' . $filename . '/';
+        } else {
+            $keyPath = $root . '/' . $owner . '/files_encryption/keys' . $filename . '/';
+        }
+
+        return Filesystem::normalizePath($keyPath . $encryptionModuleId . '/', false);
+    }
 }

lib/private/Encryption/EncryptionEventListener.php

Indentation +57 added lines, -57 removed lines

@@ -25,69 +25,69 @@
 
 /** @template-implements IEventListener<NodeRenamedEvent|ShareCreatedEvent|ShareDeletedEvent|NodeRestoredEvent> */
 class EncryptionEventListener implements IEventListener {
-	private ?Update $updater = null;
+    private ?Update $updater = null;
 
-	public function __construct(
-		private IUserSession $userSession,
-		private SetupManager $setupManager,
-		private Manager $encryptionManager,
-	) {
-	}
+    public function __construct(
+        private IUserSession $userSession,
+        private SetupManager $setupManager,
+        private Manager $encryptionManager,
+    ) {
+    }
 
-	public static function register(IEventDispatcher $dispatcher): void {
-		$dispatcher->addServiceListener(NodeRenamedEvent::class, static::class);
-		$dispatcher->addServiceListener(ShareCreatedEvent::class, static::class);
-		$dispatcher->addServiceListener(ShareDeletedEvent::class, static::class);
-		$dispatcher->addServiceListener(NodeRestoredEvent::class, static::class);
-	}
+    public static function register(IEventDispatcher $dispatcher): void {
+        $dispatcher->addServiceListener(NodeRenamedEvent::class, static::class);
+        $dispatcher->addServiceListener(ShareCreatedEvent::class, static::class);
+        $dispatcher->addServiceListener(ShareDeletedEvent::class, static::class);
+        $dispatcher->addServiceListener(NodeRestoredEvent::class, static::class);
+    }
 
-	public function handle(Event $event): void {
-		if (!$this->encryptionManager->isEnabled()) {
-			return;
-		}
-		if ($event instanceof NodeRenamedEvent) {
-			$this->getUpdate()->postRename($event->getSource(), $event->getTarget());
-		} elseif ($event instanceof ShareCreatedEvent) {
-			$this->getUpdate()->postShared($event->getShare()->getNode());
-		} elseif ($event instanceof ShareDeletedEvent) {
-			// In case the unsharing happens in a background job, we don't have
-			// a session and we load instead the user from the UserManager
-			$owner = $event->getShare()->getNode()->getOwner();
-			$this->getUpdate($owner)->postUnshared($event->getShare()->getNode());
-		} elseif ($event instanceof NodeRestoredEvent) {
-			$this->getUpdate()->postRestore($event->getTarget());
-		}
-	}
+    public function handle(Event $event): void {
+        if (!$this->encryptionManager->isEnabled()) {
+            return;
+        }
+        if ($event instanceof NodeRenamedEvent) {
+            $this->getUpdate()->postRename($event->getSource(), $event->getTarget());
+        } elseif ($event instanceof ShareCreatedEvent) {
+            $this->getUpdate()->postShared($event->getShare()->getNode());
+        } elseif ($event instanceof ShareDeletedEvent) {
+            // In case the unsharing happens in a background job, we don't have
+            // a session and we load instead the user from the UserManager
+            $owner = $event->getShare()->getNode()->getOwner();
+            $this->getUpdate($owner)->postUnshared($event->getShare()->getNode());
+        } elseif ($event instanceof NodeRestoredEvent) {
+            $this->getUpdate()->postRestore($event->getTarget());
+        }
+    }
 
-	private function getUpdate(?IUser $owner = null): Update {
-		if (is_null($this->updater)) {
-			$user = $this->userSession->getUser();
-			if (!$user && ($owner !== null)) {
-				$user = $owner;
-			}
-			if (!$user) {
-				throw new \Exception('Inconsistent data, File unshared, but owner not found. Should not happen');
-			}
+    private function getUpdate(?IUser $owner = null): Update {
+        if (is_null($this->updater)) {
+            $user = $this->userSession->getUser();
+            if (!$user && ($owner !== null)) {
+                $user = $owner;
+            }
+            if (!$user) {
+                throw new \Exception('Inconsistent data, File unshared, but owner not found. Should not happen');
+            }
 
-			$uid = $user->getUID();
+            $uid = $user->getUID();
 
-			if (!$this->setupManager->isSetupComplete($user)) {
-				$this->setupManager->setupForUser($user);
-			}
+            if (!$this->setupManager->isSetupComplete($user)) {
+                $this->setupManager->setupForUser($user);
+            }
 
-			$this->updater = new Update(
-				new Util(
-					new View(),
-					\OC::$server->getUserManager(),
-					\OC::$server->getGroupManager(),
-					\OC::$server->getConfig()),
-				\OC::$server->getEncryptionManager(),
-				\OC::$server->get(IFile::class),
-				\OC::$server->get(LoggerInterface::class),
-				$uid
-			);
-		}
+            $this->updater = new Update(
+                new Util(
+                    new View(),
+                    \OC::$server->getUserManager(),
+                    \OC::$server->getGroupManager(),
+                    \OC::$server->getConfig()),
+                \OC::$server->getEncryptionManager(),
+                \OC::$server->get(IFile::class),
+                \OC::$server->get(LoggerInterface::class),
+                $uid
+            );
+        }
 
-		return $this->updater;
-	}
+        return $this->updater;
+    }
 }

lib/private/Files/Storage/Wrapper/Encryption.php

Indentation +901 added lines, -901 removed lines

@@ -27,905 +27,905 @@
 use Psr\Log\LoggerInterface;
 
 class Encryption extends Wrapper {
-	use LocalTempFileTrait;
-
-	private string $mountPoint;
-	protected array $unencryptedSize = [];
-	private IMountPoint $mount;
-	/** for which path we execute the repair step to avoid recursions */
-	private array $fixUnencryptedSizeOf = [];
-	/** @var CappedMemoryCache<bool> */
-	private CappedMemoryCache $encryptedPaths;
-	private bool $enabled = true;
-
-	/**
-	 * @param array $parameters
-	 */
-	public function __construct(
-		array $parameters,
-		private IManager $encryptionManager,
-		private Util $util,
-		private LoggerInterface $logger,
-		private IFile $fileHelper,
-		private ?string $uid,
-		private IStorage $keyStorage,
-		private Manager $mountManager,
-		private ArrayCache $arrayCache,
-	) {
-		$this->mountPoint = $parameters['mountPoint'];
-		$this->mount = $parameters['mount'];
-		$this->encryptedPaths = new CappedMemoryCache();
-		parent::__construct($parameters);
-	}
-
-	public function filesize(string $path): int|float|false {
-		$fullPath = $this->getFullPath($path);
-
-		$info = $this->getCache()->get($path);
-		if ($info === false) {
-			/* Pass call to wrapped storage, it may be a special file like a part file */
-			return $this->storage->filesize($path);
-		}
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$size = $this->unencryptedSize[$fullPath];
-
-			// Update file cache (only if file is already cached).
-			// Certain files are not cached (e.g. *.part).
-			if (isset($info['fileid'])) {
-				if ($info instanceof ICacheEntry) {
-					$info['encrypted'] = $info['encryptedVersion'];
-				} else {
-					/**
-					 * @psalm-suppress RedundantCondition
-					 */
-					if (!is_array($info)) {
-						$info = [];
-					}
-					$info['encrypted'] = true;
-					$info = new CacheEntry($info);
-				}
-
-				if ($size !== $info->getUnencryptedSize()) {
-					$this->getCache()->update($info->getId(), [
-						'unencrypted_size' => $size
-					]);
-				}
-			}
-
-			return $size;
-		}
-
-		if (isset($info['fileid']) && $info['encrypted']) {
-			return $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
-		}
-
-		return $this->storage->filesize($path);
-	}
-
-	private function modifyMetaData(string $path, array $data): array {
-		$fullPath = $this->getFullPath($path);
-		$info = $this->getCache()->get($path);
-
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$data['encrypted'] = true;
-			$data['size'] = $this->unencryptedSize[$fullPath];
-			$data['unencrypted_size'] = $data['size'];
-		} else {
-			if (isset($info['fileid']) && $info['encrypted']) {
-				$data['size'] = $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
-				$data['encrypted'] = true;
-				$data['unencrypted_size'] = $data['size'];
-			}
-		}
-
-		if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
-			$data['encryptedVersion'] = $info['encryptedVersion'];
-		}
-
-		return $data;
-	}
-
-	public function getMetaData(string $path): ?array {
-		$data = $this->storage->getMetaData($path);
-		if (is_null($data)) {
-			return null;
-		}
-		return $this->modifyMetaData($path, $data);
-	}
-
-	public function getDirectoryContent(string $directory): \Traversable {
-		$parent = rtrim($directory, '/');
-		foreach ($this->getWrapperStorage()->getDirectoryContent($directory) as $data) {
-			yield $this->modifyMetaData($parent . '/' . $data['name'], $data);
-		}
-	}
-
-	public function file_get_contents(string $path): string|false {
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		if ($encryptionModule) {
-			$handle = $this->fopen($path, 'r');
-			if (!$handle) {
-				return false;
-			}
-			$data = stream_get_contents($handle);
-			fclose($handle);
-			return $data;
-		}
-		return $this->storage->file_get_contents($path);
-	}
-
-	public function file_put_contents(string $path, mixed $data): int|float|false {
-		// file put content will always be translated to a stream write
-		$handle = $this->fopen($path, 'w');
-		if (is_resource($handle)) {
-			$written = fwrite($handle, $data);
-			fclose($handle);
-			return $written;
-		}
-
-		return false;
-	}
-
-	public function unlink(string $path): bool {
-		$fullPath = $this->getFullPath($path);
-		if ($this->util->isExcluded($fullPath)) {
-			return $this->storage->unlink($path);
-		}
-
-		$encryptionModule = $this->getEncryptionModule($path);
-		if ($encryptionModule) {
-			$this->keyStorage->deleteAllFileKeys($fullPath);
-		}
-
-		return $this->storage->unlink($path);
-	}
-
-	public function rename(string $source, string $target): bool {
-		$result = $this->storage->rename($source, $target);
-
-		if ($result &&
-			// versions always use the keys from the original file, so we can skip
-			// this step for versions
-			$this->isVersion($target) === false &&
-			$this->encryptionManager->isEnabled()) {
-			$sourcePath = $this->getFullPath($source);
-			if (!$this->util->isExcluded($sourcePath)) {
-				$targetPath = $this->getFullPath($target);
-				if (isset($this->unencryptedSize[$sourcePath])) {
-					$this->unencryptedSize[$targetPath] = $this->unencryptedSize[$sourcePath];
-				}
-				$this->keyStorage->renameKeys($sourcePath, $targetPath);
-				$module = $this->getEncryptionModule($target);
-				if ($module) {
-					$module->update($targetPath, $this->uid, []);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	public function rmdir(string $path): bool {
-		$result = $this->storage->rmdir($path);
-		$fullPath = $this->getFullPath($path);
-		if ($result &&
-			$this->util->isExcluded($fullPath) === false &&
-			$this->encryptionManager->isEnabled()
-		) {
-			$this->keyStorage->deleteAllFileKeys($fullPath);
-		}
-
-		return $result;
-	}
-
-	public function isReadable(string $path): bool {
-		$isReadable = true;
-
-		$metaData = $this->getMetaData($path);
-		if (
-			!$this->is_dir($path) &&
-			isset($metaData['encrypted']) &&
-			$metaData['encrypted'] === true
-		) {
-			$fullPath = $this->getFullPath($path);
-			$module = $this->getEncryptionModule($path);
-			$isReadable = $module->isReadable($fullPath, $this->uid);
-		}
-
-		return $this->storage->isReadable($path) && $isReadable;
-	}
-
-	public function copy(string $source, string $target): bool {
-		$sourcePath = $this->getFullPath($source);
-
-		if ($this->util->isExcluded($sourcePath)) {
-			return $this->storage->copy($source, $target);
-		}
-
-		// need to stream copy file by file in case we copy between a encrypted
-		// and a unencrypted storage
-		$this->unlink($target);
-		return $this->copyFromStorage($this, $source, $target);
-	}
-
-	public function fopen(string $path, string $mode) {
-		// check if the file is stored in the array cache, this means that we
-		// copy a file over to the versions folder, in this case we don't want to
-		// decrypt it
-		if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
-			$this->arrayCache->remove('encryption_copy_version_' . $path);
-			return $this->storage->fopen($path, $mode);
-		}
-
-		if (!$this->enabled) {
-			return $this->storage->fopen($path, $mode);
-		}
-
-		$encryptionEnabled = $this->encryptionManager->isEnabled();
-		$shouldEncrypt = false;
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$signed = isset($header['signed']) && $header['signed'] === 'true';
-		$fullPath = $this->getFullPath($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-
-		if ($this->util->isExcluded($fullPath) === false) {
-			$size = $unencryptedSize = 0;
-			$realFile = $this->util->stripPartialFileExtension($path);
-			$targetExists = $this->is_file($realFile) || $this->file_exists($path);
-			$targetIsEncrypted = false;
-			if ($targetExists) {
-				// in case the file exists we require the explicit module as
-				// specified in the file header - otherwise we need to fail hard to
-				// prevent data loss on client side
-				if (!empty($encryptionModuleId)) {
-					$targetIsEncrypted = true;
-					$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-				}
-
-				if ($this->file_exists($path)) {
-					$size = $this->storage->filesize($path);
-					$unencryptedSize = $this->filesize($path);
-				} else {
-					$size = $unencryptedSize = 0;
-				}
-			}
-
-			try {
-				if (
-					$mode === 'w'
-					|| $mode === 'w+'
-					|| $mode === 'wb'
-					|| $mode === 'wb+'
-				) {
-					// if we update a encrypted file with a un-encrypted one we change the db flag
-					if ($targetIsEncrypted && $encryptionEnabled === false) {
-						$cache = $this->storage->getCache();
-						$entry = $cache->get($path);
-						$cache->update($entry->getId(), ['encrypted' => 0]);
-					}
-					if ($encryptionEnabled) {
-						// if $encryptionModuleId is empty, the default module will be used
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
-						$signed = true;
-					}
-				} else {
-					$info = $this->getCache()->get($path);
-					// only get encryption module if we found one in the header
-					// or if file should be encrypted according to the file cache
-					if (!empty($encryptionModuleId)) {
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = true;
-					} elseif ($info !== false && $info['encrypted'] === true) {
-						// we come from a old installation. No header and/or no module defined
-						// but the file is encrypted. In this case we need to use the
-						// OC_DEFAULT_MODULE to read the file
-						$encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
-						$shouldEncrypt = true;
-						$targetIsEncrypted = true;
-					}
-				}
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->warning('Encryption module "' . $encryptionModuleId . '" not found, file will be stored unencrypted', [
-					'exception' => $e,
-					'app' => 'core',
-				]);
-			}
-
-			// encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
-			if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
-				if (!$targetExists || !$targetIsEncrypted) {
-					$shouldEncrypt = false;
-				}
-			}
-
-			if ($shouldEncrypt === true && $encryptionModule !== null) {
-				$this->encryptedPaths->set($this->util->stripPartialFileExtension($path), true);
-				$headerSize = $this->getHeaderSize($path);
-				if ($mode === 'r' && $headerSize === 0) {
-					$firstBlock = $this->readFirstBlock($path);
-					if (!$firstBlock) {
-						throw new InvalidHeaderException("Unable to get header block for $path");
-					} elseif (!str_starts_with($firstBlock, Util::HEADER_START)) {
-						throw new InvalidHeaderException("Unable to get header size for $path, file doesn't start with encryption header");
-					} else {
-						throw new InvalidHeaderException("Unable to get header size for $path, even though file does start with encryption header");
-					}
-				}
-				$source = $this->storage->fopen($path, $mode);
-				if (!is_resource($source)) {
-					return false;
-				}
-				$handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
-					$this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
-					$size, $unencryptedSize, $headerSize, $signed);
-
-				return $handle;
-			}
-		}
-
-		return $this->storage->fopen($path, $mode);
-	}
-
-
-	/**
-	 * perform some plausibility checks if the unencrypted size is correct.
-	 * If not, we calculate the correct unencrypted size and return it
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $unencryptedSize size of the unencrypted file
-	 *
-	 * @return int unencrypted size
-	 */
-	protected function verifyUnencryptedSize(string $path, int $unencryptedSize): int {
-		$size = $this->storage->filesize($path);
-		$result = $unencryptedSize;
-
-		if ($unencryptedSize < 0 ||
-			($size > 0 && $unencryptedSize === $size) ||
-			$unencryptedSize > $size
-		) {
-			// check if we already calculate the unencrypted size for the
-			// given path to avoid recursions
-			if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
-				$this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
-				try {
-					$result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
-				} catch (\Exception $e) {
-					$this->logger->error('Couldn\'t re-calculate unencrypted size for ' . $path, ['exception' => $e]);
-				}
-				unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * calculate the unencrypted size
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $size size of the physical file
-	 * @param int $unencryptedSize size of the unencrypted file
-	 */
-	protected function fixUnencryptedSize(string $path, int $size, int $unencryptedSize): int|float {
-		$headerSize = $this->getHeaderSize($path);
-		$header = $this->getHeader($path);
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		$stream = $this->storage->fopen($path, 'r');
-
-		// if we couldn't open the file we return the old unencrypted size
-		if (!is_resource($stream)) {
-			$this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
-			return $unencryptedSize;
-		}
-
-		$newUnencryptedSize = 0;
-		$size -= $headerSize;
-		$blockSize = $this->util->getBlockSize();
-
-		// if a header exists we skip it
-		if ($headerSize > 0) {
-			$this->fread_block($stream, $headerSize);
-		}
-
-		// fast path, else the calculation for $lastChunkNr is bogus
-		if ($size === 0) {
-			return 0;
-		}
-
-		$signed = isset($header['signed']) && $header['signed'] === 'true';
-		$unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
-
-		// calculate last chunk nr
-		// next highest is end of chunks, one subtracted is last one
-		// we have to read the last chunk, we can't just calculate it (because of padding etc)
-
-		$lastChunkNr = ceil($size / $blockSize) - 1;
-		// calculate last chunk position
-		$lastChunkPos = ($lastChunkNr * $blockSize);
-		// try to fseek to the last chunk, if it fails we have to read the whole file
-		if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
-			$newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
-		}
-
-		$lastChunkContentEncrypted = '';
-		$count = $blockSize;
-
-		while ($count > 0) {
-			$data = $this->fread_block($stream, $blockSize);
-			$count = strlen($data);
-			$lastChunkContentEncrypted .= $data;
-			if (strlen($lastChunkContentEncrypted) > $blockSize) {
-				$newUnencryptedSize += $unencryptedBlockSize;
-				$lastChunkContentEncrypted = substr($lastChunkContentEncrypted, $blockSize);
-			}
-		}
-
-		fclose($stream);
-
-		// we have to decrypt the last chunk to get it actual size
-		$encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
-		$decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
-		$decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
-
-		// calc the real file size with the size of the last chunk
-		$newUnencryptedSize += strlen($decryptedLastChunk);
-
-		$this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
-
-		// write to cache if applicable
-		$cache = $this->storage->getCache();
-		$entry = $cache->get($path);
-		$cache->update($entry['fileid'], [
-			'unencrypted_size' => $newUnencryptedSize
-		]);
-
-		return $newUnencryptedSize;
-	}
-
-	/**
-	 * fread_block
-	 *
-	 * This function is a wrapper around the fread function.  It is based on the
-	 * stream_read_block function from lib/private/Files/Streams/Encryption.php
-	 * It calls stream read until the requested $blockSize was received or no remaining data is present.
-	 * This is required as stream_read only returns smaller chunks of data when the stream fetches from a
-	 * remote storage over the internet and it does not care about the given $blockSize.
-	 *
-	 * @param resource $handle the stream to read from
-	 * @param int $blockSize Length of requested data block in bytes
-	 * @return string Data fetched from stream.
-	 */
-	private function fread_block($handle, int $blockSize): string {
-		$remaining = $blockSize;
-		$data = '';
-
-		do {
-			$chunk = fread($handle, $remaining);
-			$chunk_len = strlen($chunk);
-			$data .= $chunk;
-			$remaining -= $chunk_len;
-		} while (($remaining > 0) && ($chunk_len > 0));
-
-		return $data;
-	}
-
-	public function moveFromStorage(
-		Storage\IStorage $sourceStorage,
-		string $sourceInternalPath,
-		string $targetInternalPath,
-		$preserveMtime = true,
-	): bool {
-		if ($sourceStorage === $this) {
-			return $this->rename($sourceInternalPath, $targetInternalPath);
-		}
-
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		if (!$sourceStorage->isDeletable($sourceInternalPath)) {
-			return false;
-		}
-
-		$result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
-		if ($result) {
-			$setPreserveCacheOnDelete = $sourceStorage->instanceOfStorage(ObjectStoreStorage::class) && !$this->instanceOfStorage(ObjectStoreStorage::class);
-			if ($setPreserveCacheOnDelete) {
-				/** @var ObjectStoreStorage $sourceStorage */
-				$sourceStorage->setPreserveCacheOnDelete(true);
-			}
-			try {
-				if ($sourceStorage->is_dir($sourceInternalPath)) {
-					$result = $sourceStorage->rmdir($sourceInternalPath);
-				} else {
-					$result = $sourceStorage->unlink($sourceInternalPath);
-				}
-			} finally {
-				if ($setPreserveCacheOnDelete) {
-					/** @var ObjectStoreStorage $sourceStorage */
-					$sourceStorage->setPreserveCacheOnDelete(false);
-				}
-			}
-		}
-		return $result;
-	}
-
-	public function copyFromStorage(
-		Storage\IStorage $sourceStorage,
-		string $sourceInternalPath,
-		string $targetInternalPath,
-		$preserveMtime = false,
-		$isRename = false,
-	): bool {
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
-	}
-
-	/**
-	 * Update the encrypted cache version in the database
-	 */
-	private function updateEncryptedVersion(
-		Storage\IStorage $sourceStorage,
-		string $sourceInternalPath,
-		string $targetInternalPath,
-		bool $isRename,
-		bool $keepEncryptionVersion,
-	): void {
-		$isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath);
-		$cacheInformation = [
-			'encrypted' => $isEncrypted,
-		];
-		if ($isEncrypted) {
-			$sourceCacheEntry = $sourceStorage->getCache()->get($sourceInternalPath);
-			$targetCacheEntry = $this->getCache()->get($targetInternalPath);
-
-			// Rename of the cache already happened, so we do the cleanup on the target
-			if ($sourceCacheEntry === false && $targetCacheEntry !== false) {
-				$encryptedVersion = $targetCacheEntry['encryptedVersion'];
-				$isRename = false;
-			} else {
-				$encryptedVersion = $sourceCacheEntry['encryptedVersion'];
-			}
-
-			// In case of a move operation from an unencrypted to an encrypted
-			// storage the old encrypted version would stay with "0" while the
-			// correct value would be "1". Thus we manually set the value to "1"
-			// for those cases.
-			// See also https://github.com/owncloud/core/issues/23078
-			if ($encryptedVersion === 0 || !$keepEncryptionVersion) {
-				$encryptedVersion = 1;
-			}
-
-			$cacheInformation['encryptedVersion'] = $encryptedVersion;
-		}
-
-		// in case of a rename we need to manipulate the source cache because
-		// this information will be kept for the new target
-		if ($isRename) {
-			$sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
-		} else {
-			$this->getCache()->put($targetInternalPath, $cacheInformation);
-		}
-	}
-
-	/**
-	 * copy file between two storages
-	 * @throws \Exception
-	 */
-	private function copyBetweenStorage(
-		Storage\IStorage $sourceStorage,
-		string $sourceInternalPath,
-		string $targetInternalPath,
-		bool $preserveMtime,
-		bool $isRename,
-	): bool {
-		// for versions we have nothing to do, because versions should always use the
-		// key from the original file. Just create a 1:1 copy and done
-		if ($this->isVersion($targetInternalPath) ||
-			$this->isVersion($sourceInternalPath)) {
-			// remember that we try to create a version so that we can detect it during
-			// fopen($sourceInternalPath) and by-pass the encryption in order to
-			// create a 1:1 copy of the file
-			$this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
-			$result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-			$this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
-			if ($result) {
-				$info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
-				// make sure that we update the unencrypted size for the version
-				if (isset($info['encrypted']) && $info['encrypted'] === true) {
-					$this->updateUnencryptedSize(
-						$this->getFullPath($targetInternalPath),
-						$info->getUnencryptedSize()
-					);
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, true);
-			}
-			return $result;
-		}
-
-		// first copy the keys that we reuse the existing file key on the target location
-		// and don't create a new one which would break versions for example.
-		if ($sourceStorage->instanceOfStorage(Common::class) && $sourceStorage->getMountOption('mount_point')) {
-			$mountPoint = $sourceStorage->getMountOption('mount_point');
-			$source = $mountPoint . '/' . $sourceInternalPath;
-			$target = $this->getFullPath($targetInternalPath);
-			$this->copyKeys($source, $target);
-		} else {
-			$this->logger->error('Could not find mount point, can\'t keep encryption keys');
-		}
-
-		if ($sourceStorage->is_dir($sourceInternalPath)) {
-			$dh = $sourceStorage->opendir($sourceInternalPath);
-			if (!$this->is_dir($targetInternalPath)) {
-				$result = $this->mkdir($targetInternalPath);
-			} else {
-				$result = true;
-			}
-			if (is_resource($dh)) {
-				while ($result && ($file = readdir($dh)) !== false) {
-					if (!Filesystem::isIgnoredDir($file)) {
-						$result = $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, $preserveMtime, $isRename);
-					}
-				}
-			}
-		} else {
-			try {
-				$source = $sourceStorage->fopen($sourceInternalPath, 'r');
-				$target = $this->fopen($targetInternalPath, 'w');
-				[, $result] = \OC_Helper::streamCopy($source, $target);
-			} finally {
-				if (is_resource($source)) {
-					fclose($source);
-				}
-				if (is_resource($target)) {
-					fclose($target);
-				}
-			}
-			if ($result) {
-				if ($preserveMtime) {
-					$this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, false);
-			} else {
-				// delete partially written target file
-				$this->unlink($targetInternalPath);
-				// delete cache entry that was created by fopen
-				$this->getCache()->remove($targetInternalPath);
-			}
-		}
-		return (bool)$result;
-	}
-
-	public function getLocalFile(string $path): string|false {
-		if ($this->encryptionManager->isEnabled()) {
-			$cachedFile = $this->getCachedFile($path);
-			if (is_string($cachedFile)) {
-				return $cachedFile;
-			}
-		}
-		return $this->storage->getLocalFile($path);
-	}
-
-	public function isLocal(): bool {
-		if ($this->encryptionManager->isEnabled()) {
-			return false;
-		}
-		return $this->storage->isLocal();
-	}
-
-	public function stat(string $path): array|false {
-		$stat = $this->storage->stat($path);
-		if (!$stat) {
-			return false;
-		}
-		$fileSize = $this->filesize($path);
-		$stat['size'] = $fileSize;
-		$stat[7] = $fileSize;
-		$stat['hasHeader'] = $this->getHeaderSize($path) > 0;
-		return $stat;
-	}
-
-	public function hash(string $type, string $path, bool $raw = false): string|false {
-		$fh = $this->fopen($path, 'rb');
-		$ctx = hash_init($type);
-		hash_update_stream($ctx, $fh);
-		fclose($fh);
-		return hash_final($ctx, $raw);
-	}
-
-	/**
-	 * return full path, including mount point
-	 *
-	 * @param string $path relative to mount point
-	 * @return string full path including mount point
-	 */
-	protected function getFullPath(string $path): string {
-		return Filesystem::normalizePath($this->mountPoint . '/' . $path);
-	}
-
-	/**
-	 * read first block of encrypted file, typically this will contain the
-	 * encryption header
-	 */
-	protected function readFirstBlock(string $path): string {
-		$firstBlock = '';
-		if ($this->storage->is_file($path)) {
-			$handle = $this->storage->fopen($path, 'r');
-			$firstBlock = fread($handle, $this->util->getHeaderSize());
-			fclose($handle);
-		}
-		return $firstBlock;
-	}
-
-	/**
-	 * return header size of given file
-	 */
-	protected function getHeaderSize(string $path): int {
-		$headerSize = 0;
-		$realFile = $this->util->stripPartialFileExtension($path);
-		if ($this->storage->is_file($realFile)) {
-			$path = $realFile;
-		}
-		$firstBlock = $this->readFirstBlock($path);
-
-		if (str_starts_with($firstBlock, Util::HEADER_START)) {
-			$headerSize = $this->util->getHeaderSize();
-		}
-
-		return $headerSize;
-	}
-
-	/**
-	 * read header from file
-	 */
-	protected function getHeader(string $path): array {
-		$realFile = $this->util->stripPartialFileExtension($path);
-		$exists = $this->storage->is_file($realFile);
-		if ($exists) {
-			$path = $realFile;
-		}
-
-		$result = [];
-
-		$isEncrypted = $this->encryptedPaths->get($realFile);
-		if (is_null($isEncrypted)) {
-			$info = $this->getCache()->get($path);
-			$isEncrypted = isset($info['encrypted']) && $info['encrypted'] === true;
-		}
-
-		if ($isEncrypted) {
-			$firstBlock = $this->readFirstBlock($path);
-			$result = $this->util->parseRawHeader($firstBlock);
-
-			// if the header doesn't contain a encryption module we check if it is a
-			// legacy file. If true, we add the default encryption module
-			if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY]) && (!empty($result) || $exists)) {
-				$result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * read encryption module needed to read/write the file located at $path
-	 *
-	 * @throws ModuleDoesNotExistsException
-	 * @throws \Exception
-	 */
-	protected function getEncryptionModule(string $path): ?\OCP\Encryption\IEncryptionModule {
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-		if (!empty($encryptionModuleId)) {
-			try {
-				$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
-				throw $e;
-			}
-		}
-
-		return $encryptionModule;
-	}
-
-	public function updateUnencryptedSize(string $path, int|float $unencryptedSize): void {
-		$this->unencryptedSize[$path] = $unencryptedSize;
-	}
-
-	/**
-	 * copy keys to new location
-	 *
-	 * @param string $source path relative to data/
-	 * @param string $target path relative to data/
-	 */
-	protected function copyKeys(string $source, string $target): bool {
-		if (!$this->util->isExcluded($source)) {
-			return $this->keyStorage->copyKeys($source, $target);
-		}
-
-		return false;
-	}
-
-	/**
-	 * check if path points to a files version
-	 */
-	protected function isVersion(string $path): bool {
-		$normalized = Filesystem::normalizePath($path);
-		return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
-	}
-
-	/**
-	 * check if the given storage should be encrypted or not
-	 */
-	protected function shouldEncrypt(string $path): bool {
-		$fullPath = $this->getFullPath($path);
-		$mountPointConfig = $this->mount->getOption('encrypt', true);
-		if ($mountPointConfig === false) {
-			return false;
-		}
-
-		try {
-			$encryptionModule = $this->getEncryptionModule($fullPath);
-		} catch (ModuleDoesNotExistsException $e) {
-			return false;
-		}
-
-		if ($encryptionModule === null) {
-			$encryptionModule = $this->encryptionManager->getEncryptionModule();
-		}
-
-		return $encryptionModule->shouldEncrypt($fullPath);
-	}
-
-	public function writeStream(string $path, $stream, ?int $size = null): int {
-		// always fall back to fopen
-		$target = $this->fopen($path, 'w');
-		[$count, $result] = \OC_Helper::streamCopy($stream, $target);
-		fclose($stream);
-		fclose($target);
-
-		// object store, stores the size after write and doesn't update this during scan
-		// manually store the unencrypted size
-		if ($result && $this->getWrapperStorage()->instanceOfStorage(ObjectStoreStorage::class) && $this->shouldEncrypt($path)) {
-			$this->getCache()->put($path, ['unencrypted_size' => $count]);
-		}
-
-		return $count;
-	}
-
-	public function clearIsEncryptedCache(): void {
-		$this->encryptedPaths->clear();
-	}
-
-	/**
-	 * Allow temporarily disabling the wrapper
-	 */
-	public function setEnabled(bool $enabled): void {
-		$this->enabled = $enabled;
-	}
-
-	/**
-	 * Check if the on-disk data for a file has a valid encrypted header
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function hasValidHeader(string $path): bool {
-		$firstBlock = $this->readFirstBlock($path);
-		$header = $this->util->parseRawHeader($firstBlock);
-		return (count($header) > 0);
-	}
+    use LocalTempFileTrait;
+
+    private string $mountPoint;
+    protected array $unencryptedSize = [];
+    private IMountPoint $mount;
+    /** for which path we execute the repair step to avoid recursions */
+    private array $fixUnencryptedSizeOf = [];
+    /** @var CappedMemoryCache<bool> */
+    private CappedMemoryCache $encryptedPaths;
+    private bool $enabled = true;
+
+    /**
+     * @param array $parameters
+     */
+    public function __construct(
+        array $parameters,
+        private IManager $encryptionManager,
+        private Util $util,
+        private LoggerInterface $logger,
+        private IFile $fileHelper,
+        private ?string $uid,
+        private IStorage $keyStorage,
+        private Manager $mountManager,
+        private ArrayCache $arrayCache,
+    ) {
+        $this->mountPoint = $parameters['mountPoint'];
+        $this->mount = $parameters['mount'];
+        $this->encryptedPaths = new CappedMemoryCache();
+        parent::__construct($parameters);
+    }
+
+    public function filesize(string $path): int|float|false {
+        $fullPath = $this->getFullPath($path);
+
+        $info = $this->getCache()->get($path);
+        if ($info === false) {
+            /* Pass call to wrapped storage, it may be a special file like a part file */
+            return $this->storage->filesize($path);
+        }
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $size = $this->unencryptedSize[$fullPath];
+
+            // Update file cache (only if file is already cached).
+            // Certain files are not cached (e.g. *.part).
+            if (isset($info['fileid'])) {
+                if ($info instanceof ICacheEntry) {
+                    $info['encrypted'] = $info['encryptedVersion'];
+                } else {
+                    /**
+                     * @psalm-suppress RedundantCondition
+                     */
+                    if (!is_array($info)) {
+                        $info = [];
+                    }
+                    $info['encrypted'] = true;
+                    $info = new CacheEntry($info);
+                }
+
+                if ($size !== $info->getUnencryptedSize()) {
+                    $this->getCache()->update($info->getId(), [
+                        'unencrypted_size' => $size
+                    ]);
+                }
+            }
+
+            return $size;
+        }
+
+        if (isset($info['fileid']) && $info['encrypted']) {
+            return $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
+        }
+
+        return $this->storage->filesize($path);
+    }
+
+    private function modifyMetaData(string $path, array $data): array {
+        $fullPath = $this->getFullPath($path);
+        $info = $this->getCache()->get($path);
+
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $data['encrypted'] = true;
+            $data['size'] = $this->unencryptedSize[$fullPath];
+            $data['unencrypted_size'] = $data['size'];
+        } else {
+            if (isset($info['fileid']) && $info['encrypted']) {
+                $data['size'] = $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
+                $data['encrypted'] = true;
+                $data['unencrypted_size'] = $data['size'];
+            }
+        }
+
+        if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
+            $data['encryptedVersion'] = $info['encryptedVersion'];
+        }
+
+        return $data;
+    }
+
+    public function getMetaData(string $path): ?array {
+        $data = $this->storage->getMetaData($path);
+        if (is_null($data)) {
+            return null;
+        }
+        return $this->modifyMetaData($path, $data);
+    }
+
+    public function getDirectoryContent(string $directory): \Traversable {
+        $parent = rtrim($directory, '/');
+        foreach ($this->getWrapperStorage()->getDirectoryContent($directory) as $data) {
+            yield $this->modifyMetaData($parent . '/' . $data['name'], $data);
+        }
+    }
+
+    public function file_get_contents(string $path): string|false {
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        if ($encryptionModule) {
+            $handle = $this->fopen($path, 'r');
+            if (!$handle) {
+                return false;
+            }
+            $data = stream_get_contents($handle);
+            fclose($handle);
+            return $data;
+        }
+        return $this->storage->file_get_contents($path);
+    }
+
+    public function file_put_contents(string $path, mixed $data): int|float|false {
+        // file put content will always be translated to a stream write
+        $handle = $this->fopen($path, 'w');
+        if (is_resource($handle)) {
+            $written = fwrite($handle, $data);
+            fclose($handle);
+            return $written;
+        }
+
+        return false;
+    }
+
+    public function unlink(string $path): bool {
+        $fullPath = $this->getFullPath($path);
+        if ($this->util->isExcluded($fullPath)) {
+            return $this->storage->unlink($path);
+        }
+
+        $encryptionModule = $this->getEncryptionModule($path);
+        if ($encryptionModule) {
+            $this->keyStorage->deleteAllFileKeys($fullPath);
+        }
+
+        return $this->storage->unlink($path);
+    }
+
+    public function rename(string $source, string $target): bool {
+        $result = $this->storage->rename($source, $target);
+
+        if ($result &&
+            // versions always use the keys from the original file, so we can skip
+            // this step for versions
+            $this->isVersion($target) === false &&
+            $this->encryptionManager->isEnabled()) {
+            $sourcePath = $this->getFullPath($source);
+            if (!$this->util->isExcluded($sourcePath)) {
+                $targetPath = $this->getFullPath($target);
+                if (isset($this->unencryptedSize[$sourcePath])) {
+                    $this->unencryptedSize[$targetPath] = $this->unencryptedSize[$sourcePath];
+                }
+                $this->keyStorage->renameKeys($sourcePath, $targetPath);
+                $module = $this->getEncryptionModule($target);
+                if ($module) {
+                    $module->update($targetPath, $this->uid, []);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    public function rmdir(string $path): bool {
+        $result = $this->storage->rmdir($path);
+        $fullPath = $this->getFullPath($path);
+        if ($result &&
+            $this->util->isExcluded($fullPath) === false &&
+            $this->encryptionManager->isEnabled()
+        ) {
+            $this->keyStorage->deleteAllFileKeys($fullPath);
+        }
+
+        return $result;
+    }
+
+    public function isReadable(string $path): bool {
+        $isReadable = true;
+
+        $metaData = $this->getMetaData($path);
+        if (
+            !$this->is_dir($path) &&
+            isset($metaData['encrypted']) &&
+            $metaData['encrypted'] === true
+        ) {
+            $fullPath = $this->getFullPath($path);
+            $module = $this->getEncryptionModule($path);
+            $isReadable = $module->isReadable($fullPath, $this->uid);
+        }
+
+        return $this->storage->isReadable($path) && $isReadable;
+    }
+
+    public function copy(string $source, string $target): bool {
+        $sourcePath = $this->getFullPath($source);
+
+        if ($this->util->isExcluded($sourcePath)) {
+            return $this->storage->copy($source, $target);
+        }
+
+        // need to stream copy file by file in case we copy between a encrypted
+        // and a unencrypted storage
+        $this->unlink($target);
+        return $this->copyFromStorage($this, $source, $target);
+    }
+
+    public function fopen(string $path, string $mode) {
+        // check if the file is stored in the array cache, this means that we
+        // copy a file over to the versions folder, in this case we don't want to
+        // decrypt it
+        if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
+            $this->arrayCache->remove('encryption_copy_version_' . $path);
+            return $this->storage->fopen($path, $mode);
+        }
+
+        if (!$this->enabled) {
+            return $this->storage->fopen($path, $mode);
+        }
+
+        $encryptionEnabled = $this->encryptionManager->isEnabled();
+        $shouldEncrypt = false;
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $signed = isset($header['signed']) && $header['signed'] === 'true';
+        $fullPath = $this->getFullPath($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+
+        if ($this->util->isExcluded($fullPath) === false) {
+            $size = $unencryptedSize = 0;
+            $realFile = $this->util->stripPartialFileExtension($path);
+            $targetExists = $this->is_file($realFile) || $this->file_exists($path);
+            $targetIsEncrypted = false;
+            if ($targetExists) {
+                // in case the file exists we require the explicit module as
+                // specified in the file header - otherwise we need to fail hard to
+                // prevent data loss on client side
+                if (!empty($encryptionModuleId)) {
+                    $targetIsEncrypted = true;
+                    $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                }
+
+                if ($this->file_exists($path)) {
+                    $size = $this->storage->filesize($path);
+                    $unencryptedSize = $this->filesize($path);
+                } else {
+                    $size = $unencryptedSize = 0;
+                }
+            }
+
+            try {
+                if (
+                    $mode === 'w'
+                    || $mode === 'w+'
+                    || $mode === 'wb'
+                    || $mode === 'wb+'
+                ) {
+                    // if we update a encrypted file with a un-encrypted one we change the db flag
+                    if ($targetIsEncrypted && $encryptionEnabled === false) {
+                        $cache = $this->storage->getCache();
+                        $entry = $cache->get($path);
+                        $cache->update($entry->getId(), ['encrypted' => 0]);
+                    }
+                    if ($encryptionEnabled) {
+                        // if $encryptionModuleId is empty, the default module will be used
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
+                        $signed = true;
+                    }
+                } else {
+                    $info = $this->getCache()->get($path);
+                    // only get encryption module if we found one in the header
+                    // or if file should be encrypted according to the file cache
+                    if (!empty($encryptionModuleId)) {
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = true;
+                    } elseif ($info !== false && $info['encrypted'] === true) {
+                        // we come from a old installation. No header and/or no module defined
+                        // but the file is encrypted. In this case we need to use the
+                        // OC_DEFAULT_MODULE to read the file
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
+                        $shouldEncrypt = true;
+                        $targetIsEncrypted = true;
+                    }
+                }
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->warning('Encryption module "' . $encryptionModuleId . '" not found, file will be stored unencrypted', [
+                    'exception' => $e,
+                    'app' => 'core',
+                ]);
+            }
+
+            // encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
+            if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
+                if (!$targetExists || !$targetIsEncrypted) {
+                    $shouldEncrypt = false;
+                }
+            }
+
+            if ($shouldEncrypt === true && $encryptionModule !== null) {
+                $this->encryptedPaths->set($this->util->stripPartialFileExtension($path), true);
+                $headerSize = $this->getHeaderSize($path);
+                if ($mode === 'r' && $headerSize === 0) {
+                    $firstBlock = $this->readFirstBlock($path);
+                    if (!$firstBlock) {
+                        throw new InvalidHeaderException("Unable to get header block for $path");
+                    } elseif (!str_starts_with($firstBlock, Util::HEADER_START)) {
+                        throw new InvalidHeaderException("Unable to get header size for $path, file doesn't start with encryption header");
+                    } else {
+                        throw new InvalidHeaderException("Unable to get header size for $path, even though file does start with encryption header");
+                    }
+                }
+                $source = $this->storage->fopen($path, $mode);
+                if (!is_resource($source)) {
+                    return false;
+                }
+                $handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
+                    $this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
+                    $size, $unencryptedSize, $headerSize, $signed);
+
+                return $handle;
+            }
+        }
+
+        return $this->storage->fopen($path, $mode);
+    }
+
+
+    /**
+     * perform some plausibility checks if the unencrypted size is correct.
+     * If not, we calculate the correct unencrypted size and return it
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $unencryptedSize size of the unencrypted file
+     *
+     * @return int unencrypted size
+     */
+    protected function verifyUnencryptedSize(string $path, int $unencryptedSize): int {
+        $size = $this->storage->filesize($path);
+        $result = $unencryptedSize;
+
+        if ($unencryptedSize < 0 ||
+            ($size > 0 && $unencryptedSize === $size) ||
+            $unencryptedSize > $size
+        ) {
+            // check if we already calculate the unencrypted size for the
+            // given path to avoid recursions
+            if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
+                $this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
+                try {
+                    $result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
+                } catch (\Exception $e) {
+                    $this->logger->error('Couldn\'t re-calculate unencrypted size for ' . $path, ['exception' => $e]);
+                }
+                unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * calculate the unencrypted size
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $size size of the physical file
+     * @param int $unencryptedSize size of the unencrypted file
+     */
+    protected function fixUnencryptedSize(string $path, int $size, int $unencryptedSize): int|float {
+        $headerSize = $this->getHeaderSize($path);
+        $header = $this->getHeader($path);
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        $stream = $this->storage->fopen($path, 'r');
+
+        // if we couldn't open the file we return the old unencrypted size
+        if (!is_resource($stream)) {
+            $this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
+            return $unencryptedSize;
+        }
+
+        $newUnencryptedSize = 0;
+        $size -= $headerSize;
+        $blockSize = $this->util->getBlockSize();
+
+        // if a header exists we skip it
+        if ($headerSize > 0) {
+            $this->fread_block($stream, $headerSize);
+        }
+
+        // fast path, else the calculation for $lastChunkNr is bogus
+        if ($size === 0) {
+            return 0;
+        }
+
+        $signed = isset($header['signed']) && $header['signed'] === 'true';
+        $unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
+
+        // calculate last chunk nr
+        // next highest is end of chunks, one subtracted is last one
+        // we have to read the last chunk, we can't just calculate it (because of padding etc)
+
+        $lastChunkNr = ceil($size / $blockSize) - 1;
+        // calculate last chunk position
+        $lastChunkPos = ($lastChunkNr * $blockSize);
+        // try to fseek to the last chunk, if it fails we have to read the whole file
+        if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
+            $newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
+        }
+
+        $lastChunkContentEncrypted = '';
+        $count = $blockSize;
+
+        while ($count > 0) {
+            $data = $this->fread_block($stream, $blockSize);
+            $count = strlen($data);
+            $lastChunkContentEncrypted .= $data;
+            if (strlen($lastChunkContentEncrypted) > $blockSize) {
+                $newUnencryptedSize += $unencryptedBlockSize;
+                $lastChunkContentEncrypted = substr($lastChunkContentEncrypted, $blockSize);
+            }
+        }
+
+        fclose($stream);
+
+        // we have to decrypt the last chunk to get it actual size
+        $encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
+        $decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
+        $decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
+
+        // calc the real file size with the size of the last chunk
+        $newUnencryptedSize += strlen($decryptedLastChunk);
+
+        $this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
+
+        // write to cache if applicable
+        $cache = $this->storage->getCache();
+        $entry = $cache->get($path);
+        $cache->update($entry['fileid'], [
+            'unencrypted_size' => $newUnencryptedSize
+        ]);
+
+        return $newUnencryptedSize;
+    }
+
+    /**
+     * fread_block
+     *
+     * This function is a wrapper around the fread function.  It is based on the
+     * stream_read_block function from lib/private/Files/Streams/Encryption.php
+     * It calls stream read until the requested $blockSize was received or no remaining data is present.
+     * This is required as stream_read only returns smaller chunks of data when the stream fetches from a
+     * remote storage over the internet and it does not care about the given $blockSize.
+     *
+     * @param resource $handle the stream to read from
+     * @param int $blockSize Length of requested data block in bytes
+     * @return string Data fetched from stream.
+     */
+    private function fread_block($handle, int $blockSize): string {
+        $remaining = $blockSize;
+        $data = '';
+
+        do {
+            $chunk = fread($handle, $remaining);
+            $chunk_len = strlen($chunk);
+            $data .= $chunk;
+            $remaining -= $chunk_len;
+        } while (($remaining > 0) && ($chunk_len > 0));
+
+        return $data;
+    }
+
+    public function moveFromStorage(
+        Storage\IStorage $sourceStorage,
+        string $sourceInternalPath,
+        string $targetInternalPath,
+        $preserveMtime = true,
+    ): bool {
+        if ($sourceStorage === $this) {
+            return $this->rename($sourceInternalPath, $targetInternalPath);
+        }
+
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        if (!$sourceStorage->isDeletable($sourceInternalPath)) {
+            return false;
+        }
+
+        $result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
+        if ($result) {
+            $setPreserveCacheOnDelete = $sourceStorage->instanceOfStorage(ObjectStoreStorage::class) && !$this->instanceOfStorage(ObjectStoreStorage::class);
+            if ($setPreserveCacheOnDelete) {
+                /** @var ObjectStoreStorage $sourceStorage */
+                $sourceStorage->setPreserveCacheOnDelete(true);
+            }
+            try {
+                if ($sourceStorage->is_dir($sourceInternalPath)) {
+                    $result = $sourceStorage->rmdir($sourceInternalPath);
+                } else {
+                    $result = $sourceStorage->unlink($sourceInternalPath);
+                }
+            } finally {
+                if ($setPreserveCacheOnDelete) {
+                    /** @var ObjectStoreStorage $sourceStorage */
+                    $sourceStorage->setPreserveCacheOnDelete(false);
+                }
+            }
+        }
+        return $result;
+    }
+
+    public function copyFromStorage(
+        Storage\IStorage $sourceStorage,
+        string $sourceInternalPath,
+        string $targetInternalPath,
+        $preserveMtime = false,
+        $isRename = false,
+    ): bool {
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
+    }
+
+    /**
+     * Update the encrypted cache version in the database
+     */
+    private function updateEncryptedVersion(
+        Storage\IStorage $sourceStorage,
+        string $sourceInternalPath,
+        string $targetInternalPath,
+        bool $isRename,
+        bool $keepEncryptionVersion,
+    ): void {
+        $isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath);
+        $cacheInformation = [
+            'encrypted' => $isEncrypted,
+        ];
+        if ($isEncrypted) {
+            $sourceCacheEntry = $sourceStorage->getCache()->get($sourceInternalPath);
+            $targetCacheEntry = $this->getCache()->get($targetInternalPath);
+
+            // Rename of the cache already happened, so we do the cleanup on the target
+            if ($sourceCacheEntry === false && $targetCacheEntry !== false) {
+                $encryptedVersion = $targetCacheEntry['encryptedVersion'];
+                $isRename = false;
+            } else {
+                $encryptedVersion = $sourceCacheEntry['encryptedVersion'];
+            }
+
+            // In case of a move operation from an unencrypted to an encrypted
+            // storage the old encrypted version would stay with "0" while the
+            // correct value would be "1". Thus we manually set the value to "1"
+            // for those cases.
+            // See also https://github.com/owncloud/core/issues/23078
+            if ($encryptedVersion === 0 || !$keepEncryptionVersion) {
+                $encryptedVersion = 1;
+            }
+
+            $cacheInformation['encryptedVersion'] = $encryptedVersion;
+        }
+
+        // in case of a rename we need to manipulate the source cache because
+        // this information will be kept for the new target
+        if ($isRename) {
+            $sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
+        } else {
+            $this->getCache()->put($targetInternalPath, $cacheInformation);
+        }
+    }
+
+    /**
+     * copy file between two storages
+     * @throws \Exception
+     */
+    private function copyBetweenStorage(
+        Storage\IStorage $sourceStorage,
+        string $sourceInternalPath,
+        string $targetInternalPath,
+        bool $preserveMtime,
+        bool $isRename,
+    ): bool {
+        // for versions we have nothing to do, because versions should always use the
+        // key from the original file. Just create a 1:1 copy and done
+        if ($this->isVersion($targetInternalPath) ||
+            $this->isVersion($sourceInternalPath)) {
+            // remember that we try to create a version so that we can detect it during
+            // fopen($sourceInternalPath) and by-pass the encryption in order to
+            // create a 1:1 copy of the file
+            $this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
+            $result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+            $this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
+            if ($result) {
+                $info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
+                // make sure that we update the unencrypted size for the version
+                if (isset($info['encrypted']) && $info['encrypted'] === true) {
+                    $this->updateUnencryptedSize(
+                        $this->getFullPath($targetInternalPath),
+                        $info->getUnencryptedSize()
+                    );
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, true);
+            }
+            return $result;
+        }
+
+        // first copy the keys that we reuse the existing file key on the target location
+        // and don't create a new one which would break versions for example.
+        if ($sourceStorage->instanceOfStorage(Common::class) && $sourceStorage->getMountOption('mount_point')) {
+            $mountPoint = $sourceStorage->getMountOption('mount_point');
+            $source = $mountPoint . '/' . $sourceInternalPath;
+            $target = $this->getFullPath($targetInternalPath);
+            $this->copyKeys($source, $target);
+        } else {
+            $this->logger->error('Could not find mount point, can\'t keep encryption keys');
+        }
+
+        if ($sourceStorage->is_dir($sourceInternalPath)) {
+            $dh = $sourceStorage->opendir($sourceInternalPath);
+            if (!$this->is_dir($targetInternalPath)) {
+                $result = $this->mkdir($targetInternalPath);
+            } else {
+                $result = true;
+            }
+            if (is_resource($dh)) {
+                while ($result && ($file = readdir($dh)) !== false) {
+                    if (!Filesystem::isIgnoredDir($file)) {
+                        $result = $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, $preserveMtime, $isRename);
+                    }
+                }
+            }
+        } else {
+            try {
+                $source = $sourceStorage->fopen($sourceInternalPath, 'r');
+                $target = $this->fopen($targetInternalPath, 'w');
+                [, $result] = \OC_Helper::streamCopy($source, $target);
+            } finally {
+                if (is_resource($source)) {
+                    fclose($source);
+                }
+                if (is_resource($target)) {
+                    fclose($target);
+                }
+            }
+            if ($result) {
+                if ($preserveMtime) {
+                    $this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, false);
+            } else {
+                // delete partially written target file
+                $this->unlink($targetInternalPath);
+                // delete cache entry that was created by fopen
+                $this->getCache()->remove($targetInternalPath);
+            }
+        }
+        return (bool)$result;
+    }
+
+    public function getLocalFile(string $path): string|false {
+        if ($this->encryptionManager->isEnabled()) {
+            $cachedFile = $this->getCachedFile($path);
+            if (is_string($cachedFile)) {
+                return $cachedFile;
+            }
+        }
+        return $this->storage->getLocalFile($path);
+    }
+
+    public function isLocal(): bool {
+        if ($this->encryptionManager->isEnabled()) {
+            return false;
+        }
+        return $this->storage->isLocal();
+    }
+
+    public function stat(string $path): array|false {
+        $stat = $this->storage->stat($path);
+        if (!$stat) {
+            return false;
+        }
+        $fileSize = $this->filesize($path);
+        $stat['size'] = $fileSize;
+        $stat[7] = $fileSize;
+        $stat['hasHeader'] = $this->getHeaderSize($path) > 0;
+        return $stat;
+    }
+
+    public function hash(string $type, string $path, bool $raw = false): string|false {
+        $fh = $this->fopen($path, 'rb');
+        $ctx = hash_init($type);
+        hash_update_stream($ctx, $fh);
+        fclose($fh);
+        return hash_final($ctx, $raw);
+    }
+
+    /**
+     * return full path, including mount point
+     *
+     * @param string $path relative to mount point
+     * @return string full path including mount point
+     */
+    protected function getFullPath(string $path): string {
+        return Filesystem::normalizePath($this->mountPoint . '/' . $path);
+    }
+
+    /**
+     * read first block of encrypted file, typically this will contain the
+     * encryption header
+     */
+    protected function readFirstBlock(string $path): string {
+        $firstBlock = '';
+        if ($this->storage->is_file($path)) {
+            $handle = $this->storage->fopen($path, 'r');
+            $firstBlock = fread($handle, $this->util->getHeaderSize());
+            fclose($handle);
+        }
+        return $firstBlock;
+    }
+
+    /**
+     * return header size of given file
+     */
+    protected function getHeaderSize(string $path): int {
+        $headerSize = 0;
+        $realFile = $this->util->stripPartialFileExtension($path);
+        if ($this->storage->is_file($realFile)) {
+            $path = $realFile;
+        }
+        $firstBlock = $this->readFirstBlock($path);
+
+        if (str_starts_with($firstBlock, Util::HEADER_START)) {
+            $headerSize = $this->util->getHeaderSize();
+        }
+
+        return $headerSize;
+    }
+
+    /**
+     * read header from file
+     */
+    protected function getHeader(string $path): array {
+        $realFile = $this->util->stripPartialFileExtension($path);
+        $exists = $this->storage->is_file($realFile);
+        if ($exists) {
+            $path = $realFile;
+        }
+
+        $result = [];
+
+        $isEncrypted = $this->encryptedPaths->get($realFile);
+        if (is_null($isEncrypted)) {
+            $info = $this->getCache()->get($path);
+            $isEncrypted = isset($info['encrypted']) && $info['encrypted'] === true;
+        }
+
+        if ($isEncrypted) {
+            $firstBlock = $this->readFirstBlock($path);
+            $result = $this->util->parseRawHeader($firstBlock);
+
+            // if the header doesn't contain a encryption module we check if it is a
+            // legacy file. If true, we add the default encryption module
+            if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY]) && (!empty($result) || $exists)) {
+                $result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * read encryption module needed to read/write the file located at $path
+     *
+     * @throws ModuleDoesNotExistsException
+     * @throws \Exception
+     */
+    protected function getEncryptionModule(string $path): ?\OCP\Encryption\IEncryptionModule {
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+        if (!empty($encryptionModuleId)) {
+            try {
+                $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
+                throw $e;
+            }
+        }
+
+        return $encryptionModule;
+    }
+
+    public function updateUnencryptedSize(string $path, int|float $unencryptedSize): void {
+        $this->unencryptedSize[$path] = $unencryptedSize;
+    }
+
+    /**
+     * copy keys to new location
+     *
+     * @param string $source path relative to data/
+     * @param string $target path relative to data/
+     */
+    protected function copyKeys(string $source, string $target): bool {
+        if (!$this->util->isExcluded($source)) {
+            return $this->keyStorage->copyKeys($source, $target);
+        }
+
+        return false;
+    }
+
+    /**
+     * check if path points to a files version
+     */
+    protected function isVersion(string $path): bool {
+        $normalized = Filesystem::normalizePath($path);
+        return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
+    }
+
+    /**
+     * check if the given storage should be encrypted or not
+     */
+    protected function shouldEncrypt(string $path): bool {
+        $fullPath = $this->getFullPath($path);
+        $mountPointConfig = $this->mount->getOption('encrypt', true);
+        if ($mountPointConfig === false) {
+            return false;
+        }
+
+        try {
+            $encryptionModule = $this->getEncryptionModule($fullPath);
+        } catch (ModuleDoesNotExistsException $e) {
+            return false;
+        }
+
+        if ($encryptionModule === null) {
+            $encryptionModule = $this->encryptionManager->getEncryptionModule();
+        }
+
+        return $encryptionModule->shouldEncrypt($fullPath);
+    }
+
+    public function writeStream(string $path, $stream, ?int $size = null): int {
+        // always fall back to fopen
+        $target = $this->fopen($path, 'w');
+        [$count, $result] = \OC_Helper::streamCopy($stream, $target);
+        fclose($stream);
+        fclose($target);
+
+        // object store, stores the size after write and doesn't update this during scan
+        // manually store the unencrypted size
+        if ($result && $this->getWrapperStorage()->instanceOfStorage(ObjectStoreStorage::class) && $this->shouldEncrypt($path)) {
+            $this->getCache()->put($path, ['unencrypted_size' => $count]);
+        }
+
+        return $count;
+    }
+
+    public function clearIsEncryptedCache(): void {
+        $this->encryptedPaths->clear();
+    }
+
+    /**
+     * Allow temporarily disabling the wrapper
+     */
+    public function setEnabled(bool $enabled): void {
+        $this->enabled = $enabled;
+    }
+
+    /**
+     * Check if the on-disk data for a file has a valid encrypted header
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function hasValidHeader(string $path): bool {
+        $firstBlock = $this->readFirstBlock($path);
+        $header = $this->util->parseRawHeader($firstBlock);
+        return (count($header) > 0);
+    }
 }

lib/base.php

Indentation +1146 added lines, -1146 removed lines

@@ -39,1152 +39,1152 @@
  * OC_autoload!
  */
 class OC {
-	/**
-	 * Associative array for autoloading. classname => filename
-	 */
-	public static array $CLASSPATH = [];
-	/**
-	 * The installation path for Nextcloud  on the server (e.g. /srv/http/nextcloud)
-	 */
-	public static string $SERVERROOT = '';
-	/**
-	 * the current request path relative to the Nextcloud root (e.g. files/index.php)
-	 */
-	private static string $SUBURI = '';
-	/**
-	 * the Nextcloud root path for http requests (e.g. /nextcloud)
-	 */
-	public static string $WEBROOT = '';
-	/**
-	 * The installation path array of the apps folder on the server (e.g. /srv/http/nextcloud) 'path' and
-	 * web path in 'url'
-	 */
-	public static array $APPSROOTS = [];
-
-	public static string $configDir;
-
-	/**
-	 * requested app
-	 */
-	public static string $REQUESTEDAPP = '';
-
-	/**
-	 * check if Nextcloud runs in cli mode
-	 */
-	public static bool $CLI = false;
-
-	public static \OC\Autoloader $loader;
-
-	public static \Composer\Autoload\ClassLoader $composerAutoloader;
-
-	public static \OC\Server $server;
-
-	private static \OC\Config $config;
-
-	/**
-	 * @throws \RuntimeException when the 3rdparty directory is missing or
-	 *                           the app path list is empty or contains an invalid path
-	 */
-	public static function initPaths(): void {
-		if (defined('PHPUNIT_CONFIG_DIR')) {
-			self::$configDir = OC::$SERVERROOT . '/' . PHPUNIT_CONFIG_DIR . '/';
-		} elseif (defined('PHPUNIT_RUN') and PHPUNIT_RUN and is_dir(OC::$SERVERROOT . '/tests/config/')) {
-			self::$configDir = OC::$SERVERROOT . '/tests/config/';
-		} elseif ($dir = getenv('NEXTCLOUD_CONFIG_DIR')) {
-			self::$configDir = rtrim($dir, '/') . '/';
-		} else {
-			self::$configDir = OC::$SERVERROOT . '/config/';
-		}
-		self::$config = new \OC\Config(self::$configDir);
-
-		OC::$SUBURI = str_replace('\\', '/', substr(realpath($_SERVER['SCRIPT_FILENAME'] ?? ''), strlen(OC::$SERVERROOT)));
-		/**
-		 * FIXME: The following lines are required because we can't yet instantiate
-		 *        Server::get(\OCP\IRequest::class) since \OC::$server does not yet exist.
-		 */
-		$params = [
-			'server' => [
-				'SCRIPT_NAME' => $_SERVER['SCRIPT_NAME'] ?? null,
-				'SCRIPT_FILENAME' => $_SERVER['SCRIPT_FILENAME'] ?? null,
-			],
-		];
-		if (isset($_SERVER['REMOTE_ADDR'])) {
-			$params['server']['REMOTE_ADDR'] = $_SERVER['REMOTE_ADDR'];
-		}
-		$fakeRequest = new \OC\AppFramework\Http\Request(
-			$params,
-			new \OC\AppFramework\Http\RequestId($_SERVER['UNIQUE_ID'] ?? '', new \OC\Security\SecureRandom()),
-			new \OC\AllConfig(new \OC\SystemConfig(self::$config))
-		);
-		$scriptName = $fakeRequest->getScriptName();
-		if (substr($scriptName, -1) == '/') {
-			$scriptName .= 'index.php';
-			//make sure suburi follows the same rules as scriptName
-			if (substr(OC::$SUBURI, -9) != 'index.php') {
-				if (substr(OC::$SUBURI, -1) != '/') {
-					OC::$SUBURI = OC::$SUBURI . '/';
-				}
-				OC::$SUBURI = OC::$SUBURI . 'index.php';
-			}
-		}
-
-		if (OC::$CLI) {
-			OC::$WEBROOT = self::$config->getValue('overwritewebroot', '');
-		} else {
-			if (substr($scriptName, 0 - strlen(OC::$SUBURI)) === OC::$SUBURI) {
-				OC::$WEBROOT = substr($scriptName, 0, 0 - strlen(OC::$SUBURI));
-
-				if (OC::$WEBROOT != '' && OC::$WEBROOT[0] !== '/') {
-					OC::$WEBROOT = '/' . OC::$WEBROOT;
-				}
-			} else {
-				// The scriptName is not ending with OC::$SUBURI
-				// This most likely means that we are calling from CLI.
-				// However some cron jobs still need to generate
-				// a web URL, so we use overwritewebroot as a fallback.
-				OC::$WEBROOT = self::$config->getValue('overwritewebroot', '');
-			}
-
-			// Resolve /nextcloud to /nextcloud/ to ensure to always have a trailing
-			// slash which is required by URL generation.
-			if (isset($_SERVER['REQUEST_URI']) && $_SERVER['REQUEST_URI'] === \OC::$WEBROOT &&
-					substr($_SERVER['REQUEST_URI'], -1) !== '/') {
-				header('Location: ' . \OC::$WEBROOT . '/');
-				exit();
-			}
-		}
-
-		// search the apps folder
-		$config_paths = self::$config->getValue('apps_paths', []);
-		if (!empty($config_paths)) {
-			foreach ($config_paths as $paths) {
-				if (isset($paths['url']) && isset($paths['path'])) {
-					$paths['url'] = rtrim($paths['url'], '/');
-					$paths['path'] = rtrim($paths['path'], '/');
-					OC::$APPSROOTS[] = $paths;
-				}
-			}
-		} elseif (file_exists(OC::$SERVERROOT . '/apps')) {
-			OC::$APPSROOTS[] = ['path' => OC::$SERVERROOT . '/apps', 'url' => '/apps', 'writable' => true];
-		}
-
-		if (empty(OC::$APPSROOTS)) {
-			throw new \RuntimeException('apps directory not found! Please put the Nextcloud apps folder in the Nextcloud folder'
-				. '. You can also configure the location in the config.php file.');
-		}
-		$paths = [];
-		foreach (OC::$APPSROOTS as $path) {
-			$paths[] = $path['path'];
-			if (!is_dir($path['path'])) {
-				throw new \RuntimeException(sprintf('App directory "%s" not found! Please put the Nextcloud apps folder in the'
-					. ' Nextcloud folder. You can also configure the location in the config.php file.', $path['path']));
-			}
-		}
-
-		// set the right include path
-		set_include_path(
-			implode(PATH_SEPARATOR, $paths)
-		);
-	}
-
-	public static function checkConfig(): void {
-		$l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
-
-		// Create config if it does not already exist
-		$configFilePath = self::$configDir . '/config.php';
-		if (!file_exists($configFilePath)) {
-			@touch($configFilePath);
-		}
-
-		// Check if config is writable
-		$configFileWritable = is_writable($configFilePath);
-		if (!$configFileWritable && !OC_Helper::isReadOnlyConfigEnabled()
-			|| !$configFileWritable && \OCP\Util::needUpgrade()) {
-			$urlGenerator = Server::get(IURLGenerator::class);
-
-			if (self::$CLI) {
-				echo $l->t('Cannot write into "config" directory!') . "\n";
-				echo $l->t('This can usually be fixed by giving the web server write access to the config directory.') . "\n";
-				echo "\n";
-				echo $l->t('But, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it.') . "\n";
-				echo $l->t('See %s', [ $urlGenerator->linkToDocs('admin-config') ]) . "\n";
-				exit;
-			} else {
-				Server::get(ITemplateManager::class)->printErrorPage(
-					$l->t('Cannot write into "config" directory!'),
-					$l->t('This can usually be fixed by giving the web server write access to the config directory.') . ' '
-					. $l->t('But, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it.') . ' '
-					. $l->t('See %s', [ $urlGenerator->linkToDocs('admin-config') ]),
-					503
-				);
-			}
-		}
-	}
-
-	public static function checkInstalled(\OC\SystemConfig $systemConfig): void {
-		if (defined('OC_CONSOLE')) {
-			return;
-		}
-		// Redirect to installer if not installed
-		if (!$systemConfig->getValue('installed', false) && OC::$SUBURI !== '/index.php' && OC::$SUBURI !== '/status.php') {
-			if (OC::$CLI) {
-				throw new Exception('Not installed');
-			} else {
-				$url = OC::$WEBROOT . '/index.php';
-				header('Location: ' . $url);
-			}
-			exit();
-		}
-	}
-
-	public static function checkMaintenanceMode(\OC\SystemConfig $systemConfig): void {
-		// Allow ajax update script to execute without being stopped
-		if (((bool)$systemConfig->getValue('maintenance', false)) && OC::$SUBURI != '/core/ajax/update.php') {
-			// send http status 503
-			http_response_code(503);
-			header('X-Nextcloud-Maintenance-Mode: 1');
-			header('Retry-After: 120');
-
-			// render error page
-			$template = Server::get(ITemplateManager::class)->getTemplate('', 'update.user', 'guest');
-			\OCP\Util::addScript('core', 'maintenance');
-			\OCP\Util::addStyle('core', 'guest');
-			$template->printPage();
-			die();
-		}
-	}
-
-	/**
-	 * Prints the upgrade page
-	 */
-	private static function printUpgradePage(\OC\SystemConfig $systemConfig): void {
-		$cliUpgradeLink = $systemConfig->getValue('upgrade.cli-upgrade-link', '');
-		$disableWebUpdater = $systemConfig->getValue('upgrade.disable-web', false);
-		$tooBig = false;
-		if (!$disableWebUpdater) {
-			$apps = Server::get(\OCP\App\IAppManager::class);
-			if ($apps->isEnabledForAnyone('user_ldap')) {
-				$qb = Server::get(\OCP\IDBConnection::class)->getQueryBuilder();
-
-				$result = $qb->select($qb->func()->count('*', 'user_count'))
-					->from('ldap_user_mapping')
-					->executeQuery();
-				$row = $result->fetch();
-				$result->closeCursor();
-
-				$tooBig = ($row['user_count'] > 50);
-			}
-			if (!$tooBig && $apps->isEnabledForAnyone('user_saml')) {
-				$qb = Server::get(\OCP\IDBConnection::class)->getQueryBuilder();
-
-				$result = $qb->select($qb->func()->count('*', 'user_count'))
-					->from('user_saml_users')
-					->executeQuery();
-				$row = $result->fetch();
-				$result->closeCursor();
-
-				$tooBig = ($row['user_count'] > 50);
-			}
-			if (!$tooBig) {
-				// count users
-				$totalUsers = Server::get(\OCP\IUserManager::class)->countUsersTotal(51);
-				$tooBig = ($totalUsers > 50);
-			}
-		}
-		$ignoreTooBigWarning = isset($_GET['IKnowThatThisIsABigInstanceAndTheUpdateRequestCouldRunIntoATimeoutAndHowToRestoreABackup']) &&
-			$_GET['IKnowThatThisIsABigInstanceAndTheUpdateRequestCouldRunIntoATimeoutAndHowToRestoreABackup'] === 'IAmSuperSureToDoThis';
-
-		if ($disableWebUpdater || ($tooBig && !$ignoreTooBigWarning)) {
-			// send http status 503
-			http_response_code(503);
-			header('Retry-After: 120');
-
-			$serverVersion = \OCP\Server::get(\OCP\ServerVersion::class);
-
-			// render error page
-			$template = Server::get(ITemplateManager::class)->getTemplate('', 'update.use-cli', 'guest');
-			$template->assign('productName', 'nextcloud'); // for now
-			$template->assign('version', $serverVersion->getVersionString());
-			$template->assign('tooBig', $tooBig);
-			$template->assign('cliUpgradeLink', $cliUpgradeLink);
-
-			$template->printPage();
-			die();
-		}
-
-		// check whether this is a core update or apps update
-		$installedVersion = $systemConfig->getValue('version', '0.0.0');
-		$currentVersion = implode('.', \OCP\Util::getVersion());
-
-		// if not a core upgrade, then it's apps upgrade
-		$isAppsOnlyUpgrade = version_compare($currentVersion, $installedVersion, '=');
-
-		$oldTheme = $systemConfig->getValue('theme');
-		$systemConfig->setValue('theme', '');
-		\OCP\Util::addScript('core', 'common');
-		\OCP\Util::addScript('core', 'main');
-		\OCP\Util::addTranslations('core');
-		\OCP\Util::addScript('core', 'update');
-
-		/** @var \OC\App\AppManager $appManager */
-		$appManager = Server::get(\OCP\App\IAppManager::class);
-
-		$tmpl = Server::get(ITemplateManager::class)->getTemplate('', 'update.admin', 'guest');
-		$tmpl->assign('version', \OCP\Server::get(\OCP\ServerVersion::class)->getVersionString());
-		$tmpl->assign('isAppsOnlyUpgrade', $isAppsOnlyUpgrade);
-
-		// get third party apps
-		$ocVersion = \OCP\Util::getVersion();
-		$ocVersion = implode('.', $ocVersion);
-		$incompatibleApps = $appManager->getIncompatibleApps($ocVersion);
-		$incompatibleOverwrites = $systemConfig->getValue('app_install_overwrite', []);
-		$incompatibleShippedApps = [];
-		$incompatibleDisabledApps = [];
-		foreach ($incompatibleApps as $appInfo) {
-			if ($appManager->isShipped($appInfo['id'])) {
-				$incompatibleShippedApps[] = $appInfo['name'] . ' (' . $appInfo['id'] . ')';
-			}
-			if (!in_array($appInfo['id'], $incompatibleOverwrites)) {
-				$incompatibleDisabledApps[] = $appInfo;
-			}
-		}
-
-		if (!empty($incompatibleShippedApps)) {
-			$l = Server::get(\OCP\L10N\IFactory::class)->get('core');
-			$hint = $l->t('Application %1$s is not present or has a non-compatible version with this server. Please check the apps directory.', [implode(', ', $incompatibleShippedApps)]);
-			throw new \OCP\HintException('Application ' . implode(', ', $incompatibleShippedApps) . ' is not present or has a non-compatible version with this server. Please check the apps directory.', $hint);
-		}
-
-		$tmpl->assign('appsToUpgrade', $appManager->getAppsNeedingUpgrade($ocVersion));
-		$tmpl->assign('incompatibleAppsList', $incompatibleDisabledApps);
-		try {
-			$defaults = new \OC_Defaults();
-			$tmpl->assign('productName', $defaults->getName());
-		} catch (Throwable $error) {
-			$tmpl->assign('productName', 'Nextcloud');
-		}
-		$tmpl->assign('oldTheme', $oldTheme);
-		$tmpl->printPage();
-	}
-
-	public static function initSession(): void {
-		$request = Server::get(IRequest::class);
-
-		// TODO: Temporary disabled again to solve issues with CalDAV/CardDAV clients like DAVx5 that use cookies
-		// TODO: See https://github.com/nextcloud/server/issues/37277#issuecomment-1476366147 and the other comments
-		// TODO: for further information.
-		// $isDavRequest = strpos($request->getRequestUri(), '/remote.php/dav') === 0 || strpos($request->getRequestUri(), '/remote.php/webdav') === 0;
-		// if ($request->getHeader('Authorization') !== '' && is_null($request->getCookie('cookie_test')) && $isDavRequest && !isset($_COOKIE['nc_session_id'])) {
-		// setcookie('cookie_test', 'test', time() + 3600);
-		// // Do not initialize the session if a request is authenticated directly
-		// // unless there is a session cookie already sent along
-		// return;
-		// }
-
-		if ($request->getServerProtocol() === 'https') {
-			ini_set('session.cookie_secure', 'true');
-		}
-
-		// prevents javascript from accessing php session cookies
-		ini_set('session.cookie_httponly', 'true');
-
-		// Do not initialize sessions for 'status.php' requests
-		// Monitoring endpoints can quickly flood session handlers
-		// and 'status.php' doesn't require sessions anyway
-		if (str_ends_with($request->getScriptName(), '/status.php')) {
-			return;
-		}
-
-		// set the cookie path to the Nextcloud directory
-		$cookie_path = OC::$WEBROOT ? : '/';
-		ini_set('session.cookie_path', $cookie_path);
-
-		// Let the session name be changed in the initSession Hook
-		$sessionName = OC_Util::getInstanceId();
-
-		try {
-			$logger = null;
-			if (Server::get(\OC\SystemConfig::class)->getValue('installed', false)) {
-				$logger = logger('core');
-			}
-
-			// set the session name to the instance id - which is unique
-			$session = new \OC\Session\Internal(
-				$sessionName,
-				$logger,
-			);
-
-			$cryptoWrapper = Server::get(\OC\Session\CryptoWrapper::class);
-			$session = $cryptoWrapper->wrapSession($session);
-			self::$server->setSession($session);
-
-			// if session can't be started break with http 500 error
-		} catch (Exception $e) {
-			Server::get(LoggerInterface::class)->error($e->getMessage(), ['app' => 'base','exception' => $e]);
-			//show the user a detailed error page
-			Server::get(ITemplateManager::class)->printExceptionErrorPage($e, 500);
-			die();
-		}
-
-		//try to set the session lifetime
-		$sessionLifeTime = self::getSessionLifeTime();
-
-		// session timeout
-		if ($session->exists('LAST_ACTIVITY') && (time() - $session->get('LAST_ACTIVITY') > $sessionLifeTime)) {
-			if (isset($_COOKIE[session_name()])) {
-				setcookie(session_name(), '', -1, self::$WEBROOT ? : '/');
-			}
-			Server::get(IUserSession::class)->logout();
-		}
-
-		if (!self::hasSessionRelaxedExpiry()) {
-			$session->set('LAST_ACTIVITY', time());
-		}
-		$session->close();
-	}
-
-	private static function getSessionLifeTime(): int {
-		return Server::get(\OC\AllConfig::class)->getSystemValueInt('session_lifetime', 60 * 60 * 24);
-	}
-
-	/**
-	 * @return bool true if the session expiry should only be done by gc instead of an explicit timeout
-	 */
-	public static function hasSessionRelaxedExpiry(): bool {
-		return Server::get(\OC\AllConfig::class)->getSystemValueBool('session_relaxed_expiry', false);
-	}
-
-	/**
-	 * Try to set some values to the required Nextcloud default
-	 */
-	public static function setRequiredIniValues(): void {
-		// Don't display errors and log them
-		@ini_set('display_errors', '0');
-		@ini_set('log_errors', '1');
-
-		// Try to configure php to enable big file uploads.
-		// This doesn't work always depending on the webserver and php configuration.
-		// Let's try to overwrite some defaults if they are smaller than 1 hour
-
-		if (intval(@ini_get('max_execution_time') ?: 0) < 3600) {
-			@ini_set('max_execution_time', strval(3600));
-		}
-
-		if (intval(@ini_get('max_input_time') ?: 0) < 3600) {
-			@ini_set('max_input_time', strval(3600));
-		}
-
-		// Try to set the maximum execution time to the largest time limit we have
-		if (strpos(@ini_get('disable_functions'), 'set_time_limit') === false) {
-			@set_time_limit(max(intval(@ini_get('max_execution_time')), intval(@ini_get('max_input_time'))));
-		}
-
-		@ini_set('default_charset', 'UTF-8');
-		@ini_set('gd.jpeg_ignore_warning', '1');
-	}
-
-	/**
-	 * Send the same site cookies
-	 */
-	private static function sendSameSiteCookies(): void {
-		$cookieParams = session_get_cookie_params();
-		$secureCookie = ($cookieParams['secure'] === true) ? 'secure; ' : '';
-		$policies = [
-			'lax',
-			'strict',
-		];
-
-		// Append __Host to the cookie if it meets the requirements
-		$cookiePrefix = '';
-		if ($cookieParams['secure'] === true && $cookieParams['path'] === '/') {
-			$cookiePrefix = '__Host-';
-		}
-
-		foreach ($policies as $policy) {
-			header(
-				sprintf(
-					'Set-Cookie: %snc_sameSiteCookie%s=true; path=%s; httponly;' . $secureCookie . 'expires=Fri, 31-Dec-2100 23:59:59 GMT; SameSite=%s',
-					$cookiePrefix,
-					$policy,
-					$cookieParams['path'],
-					$policy
-				),
-				false
-			);
-		}
-	}
-
-	/**
-	 * Same Site cookie to further mitigate CSRF attacks. This cookie has to
-	 * be set in every request if cookies are sent to add a second level of
-	 * defense against CSRF.
-	 *
-	 * If the cookie is not sent this will set the cookie and reload the page.
-	 * We use an additional cookie since we want to protect logout CSRF and
-	 * also we can't directly interfere with PHP's session mechanism.
-	 */
-	private static function performSameSiteCookieProtection(IConfig $config): void {
-		$request = Server::get(IRequest::class);
-
-		// Some user agents are notorious and don't really properly follow HTTP
-		// specifications. For those, have an automated opt-out. Since the protection
-		// for remote.php is applied in base.php as starting point we need to opt out
-		// here.
-		$incompatibleUserAgents = $config->getSystemValue('csrf.optout');
-
-		// Fallback, if csrf.optout is unset
-		if (!is_array($incompatibleUserAgents)) {
-			$incompatibleUserAgents = [
-				// OS X Finder
-				'/^WebDAVFS/',
-				// Windows webdav drive
-				'/^Microsoft-WebDAV-MiniRedir/',
-			];
-		}
-
-		if ($request->isUserAgent($incompatibleUserAgents)) {
-			return;
-		}
-
-		if (count($_COOKIE) > 0) {
-			$requestUri = $request->getScriptName();
-			$processingScript = explode('/', $requestUri);
-			$processingScript = $processingScript[count($processingScript) - 1];
-
-			// index.php routes are handled in the middleware
-			// and cron.php does not need any authentication at all
-			if ($processingScript === 'index.php'
-				|| $processingScript === 'cron.php') {
-				return;
-			}
-
-			// All other endpoints require the lax and the strict cookie
-			if (!$request->passesStrictCookieCheck()) {
-				logger('core')->warning('Request does not pass strict cookie check');
-				self::sendSameSiteCookies();
-				// Debug mode gets access to the resources without strict cookie
-				// due to the fact that the SabreDAV browser also lives there.
-				if (!$config->getSystemValueBool('debug', false)) {
-					http_response_code(\OCP\AppFramework\Http::STATUS_PRECONDITION_FAILED);
-					header('Content-Type: application/json');
-					echo json_encode(['error' => 'Strict Cookie has not been found in request']);
-					exit();
-				}
-			}
-		} elseif (!isset($_COOKIE['nc_sameSiteCookielax']) || !isset($_COOKIE['nc_sameSiteCookiestrict'])) {
-			self::sendSameSiteCookies();
-		}
-	}
-
-	public static function init(): void {
-		// First handle PHP configuration and copy auth headers to the expected
-		// $_SERVER variable before doing anything Server object related
-		self::setRequiredIniValues();
-		self::handleAuthHeaders();
-
-		// prevent any XML processing from loading external entities
-		libxml_set_external_entity_loader(static function () {
-			return null;
-		});
-
-		// Set default timezone before the Server object is booted
-		if (!date_default_timezone_set('UTC')) {
-			throw new \RuntimeException('Could not set timezone to UTC');
-		}
-
-		// calculate the root directories
-		OC::$SERVERROOT = str_replace('\\', '/', substr(__DIR__, 0, -4));
-
-		// register autoloader
-		$loaderStart = microtime(true);
-		require_once __DIR__ . '/autoloader.php';
-		self::$loader = new \OC\Autoloader([
-			OC::$SERVERROOT . '/lib/private/legacy',
-		]);
-		if (defined('PHPUNIT_RUN')) {
-			self::$loader->addValidRoot(OC::$SERVERROOT . '/tests');
-		}
-		spl_autoload_register([self::$loader, 'load']);
-		$loaderEnd = microtime(true);
-
-		self::$CLI = (php_sapi_name() == 'cli');
-
-		// Add default composer PSR-4 autoloader, ensure apcu to be disabled
-		self::$composerAutoloader = require_once OC::$SERVERROOT . '/lib/composer/autoload.php';
-		self::$composerAutoloader->setApcuPrefix(null);
-
-
-		try {
-			self::initPaths();
-			// setup 3rdparty autoloader
-			$vendorAutoLoad = OC::$SERVERROOT . '/3rdparty/autoload.php';
-			if (!file_exists($vendorAutoLoad)) {
-				throw new \RuntimeException('Composer autoloader not found, unable to continue. Check the folder "3rdparty". Running "git submodule update --init" will initialize the git submodule that handles the subfolder "3rdparty".');
-			}
-			require_once $vendorAutoLoad;
-		} catch (\RuntimeException $e) {
-			if (!self::$CLI) {
-				http_response_code(503);
-			}
-			// we can't use the template error page here, because this needs the
-			// DI container which isn't available yet
-			print($e->getMessage());
-			exit();
-		}
-
-		// setup the basic server
-		self::$server = new \OC\Server(\OC::$WEBROOT, self::$config);
-		self::$server->boot();
-
-		try {
-			$profiler = new BuiltInProfiler(
-				Server::get(IConfig::class),
-				Server::get(IRequest::class),
-			);
-			$profiler->start();
-		} catch (\Throwable $e) {
-			logger('core')->error('Failed to start profiler: ' . $e->getMessage(), ['app' => 'base']);
-		}
-
-		if (self::$CLI && in_array('--' . \OCP\Console\ReservedOptions::DEBUG_LOG, $_SERVER['argv'])) {
-			\OC\Core\Listener\BeforeMessageLoggedEventListener::setup();
-		}
-
-		$eventLogger = Server::get(\OCP\Diagnostics\IEventLogger::class);
-		$eventLogger->log('autoloader', 'Autoloader', $loaderStart, $loaderEnd);
-		$eventLogger->start('boot', 'Initialize');
-
-		// Override php.ini and log everything if we're troubleshooting
-		if (self::$config->getValue('loglevel') === ILogger::DEBUG) {
-			error_reporting(E_ALL);
-		}
-
-		$systemConfig = Server::get(\OC\SystemConfig::class);
-		self::registerAutoloaderCache($systemConfig);
-
-		// initialize intl fallback if necessary
-		OC_Util::isSetLocaleWorking();
-
-		$config = Server::get(IConfig::class);
-		if (!defined('PHPUNIT_RUN')) {
-			$errorHandler = new OC\Log\ErrorHandler(
-				\OCP\Server::get(\Psr\Log\LoggerInterface::class),
-			);
-			$exceptionHandler = [$errorHandler, 'onException'];
-			if ($config->getSystemValueBool('debug', false)) {
-				set_error_handler([$errorHandler, 'onAll'], E_ALL);
-				if (\OC::$CLI) {
-					$exceptionHandler = [Server::get(ITemplateManager::class), 'printExceptionErrorPage'];
-				}
-			} else {
-				set_error_handler([$errorHandler, 'onError']);
-			}
-			register_shutdown_function([$errorHandler, 'onShutdown']);
-			set_exception_handler($exceptionHandler);
-		}
-
-		/** @var \OC\AppFramework\Bootstrap\Coordinator $bootstrapCoordinator */
-		$bootstrapCoordinator = Server::get(\OC\AppFramework\Bootstrap\Coordinator::class);
-		$bootstrapCoordinator->runInitialRegistration();
-
-		$eventLogger->start('init_session', 'Initialize session');
-
-		// Check for PHP SimpleXML extension earlier since we need it before our other checks and want to provide a useful hint for web users
-		// see https://github.com/nextcloud/server/pull/2619
-		if (!function_exists('simplexml_load_file')) {
-			throw new \OCP\HintException('The PHP SimpleXML/PHP-XML extension is not installed.', 'Install the extension or make sure it is enabled.');
-		}
-
-		$appManager = Server::get(\OCP\App\IAppManager::class);
-		if ($systemConfig->getValue('installed', false)) {
-			$appManager->loadApps(['session']);
-		}
-		if (!self::$CLI) {
-			self::initSession();
-		}
-		$eventLogger->end('init_session');
-		self::checkConfig();
-		self::checkInstalled($systemConfig);
-
-		OC_Response::addSecurityHeaders();
-
-		self::performSameSiteCookieProtection($config);
-
-		if (!defined('OC_CONSOLE')) {
-			$errors = OC_Util::checkServer($systemConfig);
-			if (count($errors) > 0) {
-				if (!self::$CLI) {
-					http_response_code(503);
-					Util::addStyle('guest');
-					try {
-						Server::get(ITemplateManager::class)->printGuestPage('', 'error', ['errors' => $errors]);
-						exit;
-					} catch (\Exception $e) {
-						// In case any error happens when showing the error page, we simply fall back to posting the text.
-						// This might be the case when e.g. the data directory is broken and we can not load/write SCSS to/from it.
-					}
-				}
-
-				// Convert l10n string into regular string for usage in database
-				$staticErrors = [];
-				foreach ($errors as $error) {
-					echo $error['error'] . "\n";
-					echo $error['hint'] . "\n\n";
-					$staticErrors[] = [
-						'error' => (string)$error['error'],
-						'hint' => (string)$error['hint'],
-					];
-				}
-
-				try {
-					$config->setAppValue('core', 'cronErrors', json_encode($staticErrors));
-				} catch (\Exception $e) {
-					echo('Writing to database failed');
-				}
-				exit(1);
-			} elseif (self::$CLI && $config->getSystemValueBool('installed', false)) {
-				$config->deleteAppValue('core', 'cronErrors');
-			}
-		}
-
-		// User and Groups
-		if (!$systemConfig->getValue('installed', false)) {
-			self::$server->getSession()->set('user_id', '');
-		}
-
-		Server::get(\OCP\IUserManager::class)->registerBackend(new \OC\User\Database());
-		Server::get(\OCP\IGroupManager::class)->addBackend(new \OC\Group\Database());
-
-		// Subscribe to the hook
-		\OCP\Util::connectHook(
-			'\OCA\Files_Sharing\API\Server2Server',
-			'preLoginNameUsedAsUserName',
-			'\OC\User\Database',
-			'preLoginNameUsedAsUserName'
-		);
-
-		//setup extra user backends
-		if (!\OCP\Util::needUpgrade()) {
-			OC_User::setupBackends();
-		} else {
-			// Run upgrades in incognito mode
-			OC_User::setIncognitoMode(true);
-		}
-
-		self::registerCleanupHooks($systemConfig);
-		self::registerShareHooks($systemConfig);
-		self::registerEncryptionWrapperAndHooks();
-		self::registerAccountHooks();
-		self::registerResourceCollectionHooks();
-		self::registerFileReferenceEventListener();
-		self::registerRenderReferenceEventListener();
-		self::registerAppRestrictionsHooks();
-
-		// Make sure that the application class is not loaded before the database is setup
-		if ($systemConfig->getValue('installed', false)) {
-			$appManager->loadApp('settings');
-			/* Build core application to make sure that listeners are registered */
-			Server::get(\OC\Core\Application::class);
-		}
-
-		//make sure temporary files are cleaned up
-		$tmpManager = Server::get(\OCP\ITempManager::class);
-		register_shutdown_function([$tmpManager, 'clean']);
-		$lockProvider = Server::get(\OCP\Lock\ILockingProvider::class);
-		register_shutdown_function([$lockProvider, 'releaseAll']);
-
-		// Check whether the sample configuration has been copied
-		if ($systemConfig->getValue('copied_sample_config', false)) {
-			$l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
-			Server::get(ITemplateManager::class)->printErrorPage(
-				$l->t('Sample configuration detected'),
-				$l->t('It has been detected that the sample configuration has been copied. This can break your installation and is unsupported. Please read the documentation before performing changes on config.php'),
-				503
-			);
-			return;
-		}
-
-		$request = Server::get(IRequest::class);
-		$host = $request->getInsecureServerHost();
-		/**
-		 * if the host passed in headers isn't trusted
-		 * FIXME: Should not be in here at all :see_no_evil:
-		 */
-		if (!OC::$CLI
-			&& !Server::get(\OC\Security\TrustedDomainHelper::class)->isTrustedDomain($host)
-			&& $config->getSystemValueBool('installed', false)
-		) {
-			// Allow access to CSS resources
-			$isScssRequest = false;
-			if (strpos($request->getPathInfo() ?: '', '/css/') === 0) {
-				$isScssRequest = true;
-			}
-
-			if (substr($request->getRequestUri(), -11) === '/status.php') {
-				http_response_code(400);
-				header('Content-Type: application/json');
-				echo '{"error": "Trusted domain error.", "code": 15}';
-				exit();
-			}
-
-			if (!$isScssRequest) {
-				http_response_code(400);
-				Server::get(LoggerInterface::class)->info(
-					'Trusted domain error. "{remoteAddress}" tried to access using "{host}" as host.',
-					[
-						'app' => 'core',
-						'remoteAddress' => $request->getRemoteAddress(),
-						'host' => $host,
-					]
-				);
-
-				$tmpl = Server::get(ITemplateManager::class)->getTemplate('core', 'untrustedDomain', 'guest');
-				$tmpl->assign('docUrl', Server::get(IURLGenerator::class)->linkToDocs('admin-trusted-domains'));
-				$tmpl->printPage();
-
-				exit();
-			}
-		}
-		$eventLogger->end('boot');
-		$eventLogger->log('init', 'OC::init', $loaderStart, microtime(true));
-		$eventLogger->start('runtime', 'Runtime');
-		$eventLogger->start('request', 'Full request after boot');
-		register_shutdown_function(function () use ($eventLogger) {
-			$eventLogger->end('request');
-		});
-
-		register_shutdown_function(function () {
-			$memoryPeak = memory_get_peak_usage();
-			$logLevel = match (true) {
-				$memoryPeak > 500_000_000 => ILogger::FATAL,
-				$memoryPeak > 400_000_000 => ILogger::ERROR,
-				$memoryPeak > 300_000_000 => ILogger::WARN,
-				default => null,
-			};
-			if ($logLevel !== null) {
-				$message = 'Request used more than 300 MB of RAM: ' . Util::humanFileSize($memoryPeak);
-				$logger = Server::get(LoggerInterface::class);
-				$logger->log($logLevel, $message, ['app' => 'core']);
-			}
-		});
-	}
-
-	/**
-	 * register hooks for the cleanup of cache and bruteforce protection
-	 */
-	public static function registerCleanupHooks(\OC\SystemConfig $systemConfig): void {
-		//don't try to do this before we are properly setup
-		if ($systemConfig->getValue('installed', false) && !\OCP\Util::needUpgrade()) {
-			// NOTE: This will be replaced to use OCP
-			$userSession = Server::get(\OC\User\Session::class);
-			$userSession->listen('\OC\User', 'postLogin', function () use ($userSession) {
-				if (!defined('PHPUNIT_RUN') && $userSession->isLoggedIn()) {
-					// reset brute force delay for this IP address and username
-					$uid = $userSession->getUser()->getUID();
-					$request = Server::get(IRequest::class);
-					$throttler = Server::get(IThrottler::class);
-					$throttler->resetDelay($request->getRemoteAddress(), 'login', ['user' => $uid]);
-				}
-
-				try {
-					$cache = new \OC\Cache\File();
-					$cache->gc();
-				} catch (\OC\ServerNotAvailableException $e) {
-					// not a GC exception, pass it on
-					throw $e;
-				} catch (\OC\ForbiddenException $e) {
-					// filesystem blocked for this request, ignore
-				} catch (\Exception $e) {
-					// a GC exception should not prevent users from using OC,
-					// so log the exception
-					Server::get(LoggerInterface::class)->warning('Exception when running cache gc.', [
-						'app' => 'core',
-						'exception' => $e,
-					]);
-				}
-			});
-		}
-	}
-
-	private static function registerEncryptionWrapperAndHooks(): void {
-		/** @var \OC\Encryption\Manager */
-		$manager = Server::get(\OCP\Encryption\IManager::class);
-		Server::get(IEventDispatcher::class)->addListener(
-			BeforeFileSystemSetupEvent::class,
-			$manager->setupStorage(...),
-		);
-
-		$enabled = $manager->isEnabled();
-		if ($enabled) {
-			\OC\Encryption\EncryptionEventListener::register(Server::get(IEventDispatcher::class));
-		}
-	}
-
-	private static function registerAccountHooks(): void {
-		/** @var IEventDispatcher $dispatcher */
-		$dispatcher = Server::get(IEventDispatcher::class);
-		$dispatcher->addServiceListener(UserChangedEvent::class, \OC\Accounts\Hooks::class);
-	}
-
-	private static function registerAppRestrictionsHooks(): void {
-		/** @var \OC\Group\Manager $groupManager */
-		$groupManager = Server::get(\OCP\IGroupManager::class);
-		$groupManager->listen('\OC\Group', 'postDelete', function (\OCP\IGroup $group) {
-			$appManager = Server::get(\OCP\App\IAppManager::class);
-			$apps = $appManager->getEnabledAppsForGroup($group);
-			foreach ($apps as $appId) {
-				$restrictions = $appManager->getAppRestriction($appId);
-				if (empty($restrictions)) {
-					continue;
-				}
-				$key = array_search($group->getGID(), $restrictions);
-				unset($restrictions[$key]);
-				$restrictions = array_values($restrictions);
-				if (empty($restrictions)) {
-					$appManager->disableApp($appId);
-				} else {
-					$appManager->enableAppForGroups($appId, $restrictions);
-				}
-			}
-		});
-	}
-
-	private static function registerResourceCollectionHooks(): void {
-		\OC\Collaboration\Resources\Listener::register(Server::get(IEventDispatcher::class));
-	}
-
-	private static function registerFileReferenceEventListener(): void {
-		\OC\Collaboration\Reference\File\FileReferenceEventListener::register(Server::get(IEventDispatcher::class));
-	}
-
-	private static function registerRenderReferenceEventListener() {
-		\OC\Collaboration\Reference\RenderReferenceEventListener::register(Server::get(IEventDispatcher::class));
-	}
-
-	/**
-	 * register hooks for sharing
-	 */
-	public static function registerShareHooks(\OC\SystemConfig $systemConfig): void {
-		if ($systemConfig->getValue('installed')) {
-
-			$dispatcher = Server::get(IEventDispatcher::class);
-			$dispatcher->addServiceListener(UserRemovedEvent::class, UserRemovedListener::class);
-			$dispatcher->addServiceListener(GroupDeletedEvent::class, GroupDeletedListener::class);
-			$dispatcher->addServiceListener(UserDeletedEvent::class, UserDeletedListener::class);
-		}
-	}
-
-	protected static function registerAutoloaderCache(\OC\SystemConfig $systemConfig): void {
-		// The class loader takes an optional low-latency cache, which MUST be
-		// namespaced. The instanceid is used for namespacing, but might be
-		// unavailable at this point. Furthermore, it might not be possible to
-		// generate an instanceid via \OC_Util::getInstanceId() because the
-		// config file may not be writable. As such, we only register a class
-		// loader cache if instanceid is available without trying to create one.
-		$instanceId = $systemConfig->getValue('instanceid', null);
-		if ($instanceId) {
-			try {
-				$memcacheFactory = Server::get(\OCP\ICacheFactory::class);
-				self::$loader->setMemoryCache($memcacheFactory->createLocal('Autoloader'));
-			} catch (\Exception $ex) {
-			}
-		}
-	}
-
-	/**
-	 * Handle the request
-	 */
-	public static function handleRequest(): void {
-		Server::get(\OCP\Diagnostics\IEventLogger::class)->start('handle_request', 'Handle request');
-		$systemConfig = Server::get(\OC\SystemConfig::class);
-
-		// Check if Nextcloud is installed or in maintenance (update) mode
-		if (!$systemConfig->getValue('installed', false)) {
-			\OC::$server->getSession()->clear();
-			$controller = Server::get(\OC\Core\Controller\SetupController::class);
-			$controller->run($_POST);
-			exit();
-		}
-
-		$request = Server::get(IRequest::class);
-		$requestPath = $request->getRawPathInfo();
-		if ($requestPath === '/heartbeat') {
-			return;
-		}
-		if (substr($requestPath, -3) !== '.js') { // we need these files during the upgrade
-			self::checkMaintenanceMode($systemConfig);
-
-			if (\OCP\Util::needUpgrade()) {
-				if (function_exists('opcache_reset')) {
-					opcache_reset();
-				}
-				if (!((bool)$systemConfig->getValue('maintenance', false))) {
-					self::printUpgradePage($systemConfig);
-					exit();
-				}
-			}
-		}
-
-		$appManager = Server::get(\OCP\App\IAppManager::class);
-
-		// Always load authentication apps
-		$appManager->loadApps(['authentication']);
-		$appManager->loadApps(['extended_authentication']);
-
-		// Load minimum set of apps
-		if (!\OCP\Util::needUpgrade()
-			&& !((bool)$systemConfig->getValue('maintenance', false))) {
-			// For logged-in users: Load everything
-			if (Server::get(IUserSession::class)->isLoggedIn()) {
-				$appManager->loadApps();
-			} else {
-				// For guests: Load only filesystem and logging
-				$appManager->loadApps(['filesystem', 'logging']);
-
-				// Don't try to login when a client is trying to get a OAuth token.
-				// OAuth needs to support basic auth too, so the login is not valid
-				// inside Nextcloud and the Login exception would ruin it.
-				if ($request->getRawPathInfo() !== '/apps/oauth2/api/v1/token') {
-					self::handleLogin($request);
-				}
-			}
-		}
-
-		if (!self::$CLI) {
-			try {
-				if (!\OCP\Util::needUpgrade()) {
-					$appManager->loadApps(['filesystem', 'logging']);
-					$appManager->loadApps();
-				}
-				Server::get(\OC\Route\Router::class)->match($request->getRawPathInfo());
-				return;
-			} catch (Symfony\Component\Routing\Exception\ResourceNotFoundException $e) {
-				//header('HTTP/1.0 404 Not Found');
-			} catch (Symfony\Component\Routing\Exception\MethodNotAllowedException $e) {
-				http_response_code(405);
-				return;
-			}
-		}
-
-		// Handle WebDAV
-		if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'PROPFIND') {
-			// not allowed any more to prevent people
-			// mounting this root directly.
-			// Users need to mount remote.php/webdav instead.
-			http_response_code(405);
-			return;
-		}
-
-		// Handle requests for JSON or XML
-		$acceptHeader = $request->getHeader('Accept');
-		if (in_array($acceptHeader, ['application/json', 'application/xml'], true)) {
-			http_response_code(404);
-			return;
-		}
-
-		// Handle resources that can't be found
-		// This prevents browsers from redirecting to the default page and then
-		// attempting to parse HTML as CSS and similar.
-		$destinationHeader = $request->getHeader('Sec-Fetch-Dest');
-		if (in_array($destinationHeader, ['font', 'script', 'style'])) {
-			http_response_code(404);
-			return;
-		}
-
-		// Redirect to the default app or login only as an entry point
-		if ($requestPath === '') {
-			// Someone is logged in
-			if (Server::get(IUserSession::class)->isLoggedIn()) {
-				header('Location: ' . Server::get(IURLGenerator::class)->linkToDefaultPageUrl());
-			} else {
-				// Not handled and not logged in
-				header('Location: ' . Server::get(IURLGenerator::class)->linkToRouteAbsolute('core.login.showLoginForm'));
-			}
-			return;
-		}
-
-		try {
-			Server::get(\OC\Route\Router::class)->match('/error/404');
-		} catch (\Exception $e) {
-			if (!$e instanceof MethodNotAllowedException) {
-				logger('core')->emergency($e->getMessage(), ['exception' => $e]);
-			}
-			$l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
-			Server::get(ITemplateManager::class)->printErrorPage(
-				'404',
-				$l->t('The page could not be found on the server.'),
-				404
-			);
-		}
-	}
-
-	/**
-	 * Check login: apache auth, auth token, basic auth
-	 */
-	public static function handleLogin(OCP\IRequest $request): bool {
-		if ($request->getHeader('X-Nextcloud-Federation')) {
-			return false;
-		}
-		$userSession = Server::get(\OC\User\Session::class);
-		if (OC_User::handleApacheAuth()) {
-			return true;
-		}
-		if (self::tryAppAPILogin($request)) {
-			return true;
-		}
-		if ($userSession->tryTokenLogin($request)) {
-			return true;
-		}
-		if (isset($_COOKIE['nc_username'])
-			&& isset($_COOKIE['nc_token'])
-			&& isset($_COOKIE['nc_session_id'])
-			&& $userSession->loginWithCookie($_COOKIE['nc_username'], $_COOKIE['nc_token'], $_COOKIE['nc_session_id'])) {
-			return true;
-		}
-		if ($userSession->tryBasicAuthLogin($request, Server::get(IThrottler::class))) {
-			return true;
-		}
-		return false;
-	}
-
-	protected static function handleAuthHeaders(): void {
-		//copy http auth headers for apache+php-fcgid work around
-		if (isset($_SERVER['HTTP_XAUTHORIZATION']) && !isset($_SERVER['HTTP_AUTHORIZATION'])) {
-			$_SERVER['HTTP_AUTHORIZATION'] = $_SERVER['HTTP_XAUTHORIZATION'];
-		}
-
-		// Extract PHP_AUTH_USER/PHP_AUTH_PW from other headers if necessary.
-		$vars = [
-			'HTTP_AUTHORIZATION', // apache+php-cgi work around
-			'REDIRECT_HTTP_AUTHORIZATION', // apache+php-cgi alternative
-		];
-		foreach ($vars as $var) {
-			if (isset($_SERVER[$var]) && is_string($_SERVER[$var]) && preg_match('/Basic\s+(.*)$/i', $_SERVER[$var], $matches)) {
-				$credentials = explode(':', base64_decode($matches[1]), 2);
-				if (count($credentials) === 2) {
-					$_SERVER['PHP_AUTH_USER'] = $credentials[0];
-					$_SERVER['PHP_AUTH_PW'] = $credentials[1];
-					break;
-				}
-			}
-		}
-	}
-
-	protected static function tryAppAPILogin(OCP\IRequest $request): bool {
-		if (!$request->getHeader('AUTHORIZATION-APP-API')) {
-			return false;
-		}
-		$appManager = Server::get(OCP\App\IAppManager::class);
-		if (!$appManager->isEnabledForAnyone('app_api')) {
-			return false;
-		}
-		try {
-			$appAPIService = Server::get(OCA\AppAPI\Service\AppAPIService::class);
-			return $appAPIService->validateExAppRequestToNC($request);
-		} catch (\Psr\Container\NotFoundExceptionInterface|\Psr\Container\ContainerExceptionInterface $e) {
-			return false;
-		}
-	}
+    /**
+     * Associative array for autoloading. classname => filename
+     */
+    public static array $CLASSPATH = [];
+    /**
+     * The installation path for Nextcloud  on the server (e.g. /srv/http/nextcloud)
+     */
+    public static string $SERVERROOT = '';
+    /**
+     * the current request path relative to the Nextcloud root (e.g. files/index.php)
+     */
+    private static string $SUBURI = '';
+    /**
+     * the Nextcloud root path for http requests (e.g. /nextcloud)
+     */
+    public static string $WEBROOT = '';
+    /**
+     * The installation path array of the apps folder on the server (e.g. /srv/http/nextcloud) 'path' and
+     * web path in 'url'
+     */
+    public static array $APPSROOTS = [];
+
+    public static string $configDir;
+
+    /**
+     * requested app
+     */
+    public static string $REQUESTEDAPP = '';
+
+    /**
+     * check if Nextcloud runs in cli mode
+     */
+    public static bool $CLI = false;
+
+    public static \OC\Autoloader $loader;
+
+    public static \Composer\Autoload\ClassLoader $composerAutoloader;
+
+    public static \OC\Server $server;
+
+    private static \OC\Config $config;
+
+    /**
+     * @throws \RuntimeException when the 3rdparty directory is missing or
+     *                           the app path list is empty or contains an invalid path
+     */
+    public static function initPaths(): void {
+        if (defined('PHPUNIT_CONFIG_DIR')) {
+            self::$configDir = OC::$SERVERROOT . '/' . PHPUNIT_CONFIG_DIR . '/';
+        } elseif (defined('PHPUNIT_RUN') and PHPUNIT_RUN and is_dir(OC::$SERVERROOT . '/tests/config/')) {
+            self::$configDir = OC::$SERVERROOT . '/tests/config/';
+        } elseif ($dir = getenv('NEXTCLOUD_CONFIG_DIR')) {
+            self::$configDir = rtrim($dir, '/') . '/';
+        } else {
+            self::$configDir = OC::$SERVERROOT . '/config/';
+        }
+        self::$config = new \OC\Config(self::$configDir);
+
+        OC::$SUBURI = str_replace('\\', '/', substr(realpath($_SERVER['SCRIPT_FILENAME'] ?? ''), strlen(OC::$SERVERROOT)));
+        /**
+         * FIXME: The following lines are required because we can't yet instantiate
+         *        Server::get(\OCP\IRequest::class) since \OC::$server does not yet exist.
+         */
+        $params = [
+            'server' => [
+                'SCRIPT_NAME' => $_SERVER['SCRIPT_NAME'] ?? null,
+                'SCRIPT_FILENAME' => $_SERVER['SCRIPT_FILENAME'] ?? null,
+            ],
+        ];
+        if (isset($_SERVER['REMOTE_ADDR'])) {
+            $params['server']['REMOTE_ADDR'] = $_SERVER['REMOTE_ADDR'];
+        }
+        $fakeRequest = new \OC\AppFramework\Http\Request(
+            $params,
+            new \OC\AppFramework\Http\RequestId($_SERVER['UNIQUE_ID'] ?? '', new \OC\Security\SecureRandom()),
+            new \OC\AllConfig(new \OC\SystemConfig(self::$config))
+        );
+        $scriptName = $fakeRequest->getScriptName();
+        if (substr($scriptName, -1) == '/') {
+            $scriptName .= 'index.php';
+            //make sure suburi follows the same rules as scriptName
+            if (substr(OC::$SUBURI, -9) != 'index.php') {
+                if (substr(OC::$SUBURI, -1) != '/') {
+                    OC::$SUBURI = OC::$SUBURI . '/';
+                }
+                OC::$SUBURI = OC::$SUBURI . 'index.php';
+            }
+        }
+
+        if (OC::$CLI) {
+            OC::$WEBROOT = self::$config->getValue('overwritewebroot', '');
+        } else {
+            if (substr($scriptName, 0 - strlen(OC::$SUBURI)) === OC::$SUBURI) {
+                OC::$WEBROOT = substr($scriptName, 0, 0 - strlen(OC::$SUBURI));
+
+                if (OC::$WEBROOT != '' && OC::$WEBROOT[0] !== '/') {
+                    OC::$WEBROOT = '/' . OC::$WEBROOT;
+                }
+            } else {
+                // The scriptName is not ending with OC::$SUBURI
+                // This most likely means that we are calling from CLI.
+                // However some cron jobs still need to generate
+                // a web URL, so we use overwritewebroot as a fallback.
+                OC::$WEBROOT = self::$config->getValue('overwritewebroot', '');
+            }
+
+            // Resolve /nextcloud to /nextcloud/ to ensure to always have a trailing
+            // slash which is required by URL generation.
+            if (isset($_SERVER['REQUEST_URI']) && $_SERVER['REQUEST_URI'] === \OC::$WEBROOT &&
+                    substr($_SERVER['REQUEST_URI'], -1) !== '/') {
+                header('Location: ' . \OC::$WEBROOT . '/');
+                exit();
+            }
+        }
+
+        // search the apps folder
+        $config_paths = self::$config->getValue('apps_paths', []);
+        if (!empty($config_paths)) {
+            foreach ($config_paths as $paths) {
+                if (isset($paths['url']) && isset($paths['path'])) {
+                    $paths['url'] = rtrim($paths['url'], '/');
+                    $paths['path'] = rtrim($paths['path'], '/');
+                    OC::$APPSROOTS[] = $paths;
+                }
+            }
+        } elseif (file_exists(OC::$SERVERROOT . '/apps')) {
+            OC::$APPSROOTS[] = ['path' => OC::$SERVERROOT . '/apps', 'url' => '/apps', 'writable' => true];
+        }
+
+        if (empty(OC::$APPSROOTS)) {
+            throw new \RuntimeException('apps directory not found! Please put the Nextcloud apps folder in the Nextcloud folder'
+                . '. You can also configure the location in the config.php file.');
+        }
+        $paths = [];
+        foreach (OC::$APPSROOTS as $path) {
+            $paths[] = $path['path'];
+            if (!is_dir($path['path'])) {
+                throw new \RuntimeException(sprintf('App directory "%s" not found! Please put the Nextcloud apps folder in the'
+                    . ' Nextcloud folder. You can also configure the location in the config.php file.', $path['path']));
+            }
+        }
+
+        // set the right include path
+        set_include_path(
+            implode(PATH_SEPARATOR, $paths)
+        );
+    }
+
+    public static function checkConfig(): void {
+        $l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
+
+        // Create config if it does not already exist
+        $configFilePath = self::$configDir . '/config.php';
+        if (!file_exists($configFilePath)) {
+            @touch($configFilePath);
+        }
+
+        // Check if config is writable
+        $configFileWritable = is_writable($configFilePath);
+        if (!$configFileWritable && !OC_Helper::isReadOnlyConfigEnabled()
+            || !$configFileWritable && \OCP\Util::needUpgrade()) {
+            $urlGenerator = Server::get(IURLGenerator::class);
+
+            if (self::$CLI) {
+                echo $l->t('Cannot write into "config" directory!') . "\n";
+                echo $l->t('This can usually be fixed by giving the web server write access to the config directory.') . "\n";
+                echo "\n";
+                echo $l->t('But, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it.') . "\n";
+                echo $l->t('See %s', [ $urlGenerator->linkToDocs('admin-config') ]) . "\n";
+                exit;
+            } else {
+                Server::get(ITemplateManager::class)->printErrorPage(
+                    $l->t('Cannot write into "config" directory!'),
+                    $l->t('This can usually be fixed by giving the web server write access to the config directory.') . ' '
+                    . $l->t('But, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it.') . ' '
+                    . $l->t('See %s', [ $urlGenerator->linkToDocs('admin-config') ]),
+                    503
+                );
+            }
+        }
+    }
+
+    public static function checkInstalled(\OC\SystemConfig $systemConfig): void {
+        if (defined('OC_CONSOLE')) {
+            return;
+        }
+        // Redirect to installer if not installed
+        if (!$systemConfig->getValue('installed', false) && OC::$SUBURI !== '/index.php' && OC::$SUBURI !== '/status.php') {
+            if (OC::$CLI) {
+                throw new Exception('Not installed');
+            } else {
+                $url = OC::$WEBROOT . '/index.php';
+                header('Location: ' . $url);
+            }
+            exit();
+        }
+    }
+
+    public static function checkMaintenanceMode(\OC\SystemConfig $systemConfig): void {
+        // Allow ajax update script to execute without being stopped
+        if (((bool)$systemConfig->getValue('maintenance', false)) && OC::$SUBURI != '/core/ajax/update.php') {
+            // send http status 503
+            http_response_code(503);
+            header('X-Nextcloud-Maintenance-Mode: 1');
+            header('Retry-After: 120');
+
+            // render error page
+            $template = Server::get(ITemplateManager::class)->getTemplate('', 'update.user', 'guest');
+            \OCP\Util::addScript('core', 'maintenance');
+            \OCP\Util::addStyle('core', 'guest');
+            $template->printPage();
+            die();
+        }
+    }
+
+    /**
+     * Prints the upgrade page
+     */
+    private static function printUpgradePage(\OC\SystemConfig $systemConfig): void {
+        $cliUpgradeLink = $systemConfig->getValue('upgrade.cli-upgrade-link', '');
+        $disableWebUpdater = $systemConfig->getValue('upgrade.disable-web', false);
+        $tooBig = false;
+        if (!$disableWebUpdater) {
+            $apps = Server::get(\OCP\App\IAppManager::class);
+            if ($apps->isEnabledForAnyone('user_ldap')) {
+                $qb = Server::get(\OCP\IDBConnection::class)->getQueryBuilder();
+
+                $result = $qb->select($qb->func()->count('*', 'user_count'))
+                    ->from('ldap_user_mapping')
+                    ->executeQuery();
+                $row = $result->fetch();
+                $result->closeCursor();
+
+                $tooBig = ($row['user_count'] > 50);
+            }
+            if (!$tooBig && $apps->isEnabledForAnyone('user_saml')) {
+                $qb = Server::get(\OCP\IDBConnection::class)->getQueryBuilder();
+
+                $result = $qb->select($qb->func()->count('*', 'user_count'))
+                    ->from('user_saml_users')
+                    ->executeQuery();
+                $row = $result->fetch();
+                $result->closeCursor();
+
+                $tooBig = ($row['user_count'] > 50);
+            }
+            if (!$tooBig) {
+                // count users
+                $totalUsers = Server::get(\OCP\IUserManager::class)->countUsersTotal(51);
+                $tooBig = ($totalUsers > 50);
+            }
+        }
+        $ignoreTooBigWarning = isset($_GET['IKnowThatThisIsABigInstanceAndTheUpdateRequestCouldRunIntoATimeoutAndHowToRestoreABackup']) &&
+            $_GET['IKnowThatThisIsABigInstanceAndTheUpdateRequestCouldRunIntoATimeoutAndHowToRestoreABackup'] === 'IAmSuperSureToDoThis';
+
+        if ($disableWebUpdater || ($tooBig && !$ignoreTooBigWarning)) {
+            // send http status 503
+            http_response_code(503);
+            header('Retry-After: 120');
+
+            $serverVersion = \OCP\Server::get(\OCP\ServerVersion::class);
+
+            // render error page
+            $template = Server::get(ITemplateManager::class)->getTemplate('', 'update.use-cli', 'guest');
+            $template->assign('productName', 'nextcloud'); // for now
+            $template->assign('version', $serverVersion->getVersionString());
+            $template->assign('tooBig', $tooBig);
+            $template->assign('cliUpgradeLink', $cliUpgradeLink);
+
+            $template->printPage();
+            die();
+        }
+
+        // check whether this is a core update or apps update
+        $installedVersion = $systemConfig->getValue('version', '0.0.0');
+        $currentVersion = implode('.', \OCP\Util::getVersion());
+
+        // if not a core upgrade, then it's apps upgrade
+        $isAppsOnlyUpgrade = version_compare($currentVersion, $installedVersion, '=');
+
+        $oldTheme = $systemConfig->getValue('theme');
+        $systemConfig->setValue('theme', '');
+        \OCP\Util::addScript('core', 'common');
+        \OCP\Util::addScript('core', 'main');
+        \OCP\Util::addTranslations('core');
+        \OCP\Util::addScript('core', 'update');
+
+        /** @var \OC\App\AppManager $appManager */
+        $appManager = Server::get(\OCP\App\IAppManager::class);
+
+        $tmpl = Server::get(ITemplateManager::class)->getTemplate('', 'update.admin', 'guest');
+        $tmpl->assign('version', \OCP\Server::get(\OCP\ServerVersion::class)->getVersionString());
+        $tmpl->assign('isAppsOnlyUpgrade', $isAppsOnlyUpgrade);
+
+        // get third party apps
+        $ocVersion = \OCP\Util::getVersion();
+        $ocVersion = implode('.', $ocVersion);
+        $incompatibleApps = $appManager->getIncompatibleApps($ocVersion);
+        $incompatibleOverwrites = $systemConfig->getValue('app_install_overwrite', []);
+        $incompatibleShippedApps = [];
+        $incompatibleDisabledApps = [];
+        foreach ($incompatibleApps as $appInfo) {
+            if ($appManager->isShipped($appInfo['id'])) {
+                $incompatibleShippedApps[] = $appInfo['name'] . ' (' . $appInfo['id'] . ')';
+            }
+            if (!in_array($appInfo['id'], $incompatibleOverwrites)) {
+                $incompatibleDisabledApps[] = $appInfo;
+            }
+        }
+
+        if (!empty($incompatibleShippedApps)) {
+            $l = Server::get(\OCP\L10N\IFactory::class)->get('core');
+            $hint = $l->t('Application %1$s is not present or has a non-compatible version with this server. Please check the apps directory.', [implode(', ', $incompatibleShippedApps)]);
+            throw new \OCP\HintException('Application ' . implode(', ', $incompatibleShippedApps) . ' is not present or has a non-compatible version with this server. Please check the apps directory.', $hint);
+        }
+
+        $tmpl->assign('appsToUpgrade', $appManager->getAppsNeedingUpgrade($ocVersion));
+        $tmpl->assign('incompatibleAppsList', $incompatibleDisabledApps);
+        try {
+            $defaults = new \OC_Defaults();
+            $tmpl->assign('productName', $defaults->getName());
+        } catch (Throwable $error) {
+            $tmpl->assign('productName', 'Nextcloud');
+        }
+        $tmpl->assign('oldTheme', $oldTheme);
+        $tmpl->printPage();
+    }
+
+    public static function initSession(): void {
+        $request = Server::get(IRequest::class);
+
+        // TODO: Temporary disabled again to solve issues with CalDAV/CardDAV clients like DAVx5 that use cookies
+        // TODO: See https://github.com/nextcloud/server/issues/37277#issuecomment-1476366147 and the other comments
+        // TODO: for further information.
+        // $isDavRequest = strpos($request->getRequestUri(), '/remote.php/dav') === 0 || strpos($request->getRequestUri(), '/remote.php/webdav') === 0;
+        // if ($request->getHeader('Authorization') !== '' && is_null($request->getCookie('cookie_test')) && $isDavRequest && !isset($_COOKIE['nc_session_id'])) {
+        // setcookie('cookie_test', 'test', time() + 3600);
+        // // Do not initialize the session if a request is authenticated directly
+        // // unless there is a session cookie already sent along
+        // return;
+        // }
+
+        if ($request->getServerProtocol() === 'https') {
+            ini_set('session.cookie_secure', 'true');
+        }
+
+        // prevents javascript from accessing php session cookies
+        ini_set('session.cookie_httponly', 'true');
+
+        // Do not initialize sessions for 'status.php' requests
+        // Monitoring endpoints can quickly flood session handlers
+        // and 'status.php' doesn't require sessions anyway
+        if (str_ends_with($request->getScriptName(), '/status.php')) {
+            return;
+        }
+
+        // set the cookie path to the Nextcloud directory
+        $cookie_path = OC::$WEBROOT ? : '/';
+        ini_set('session.cookie_path', $cookie_path);
+
+        // Let the session name be changed in the initSession Hook
+        $sessionName = OC_Util::getInstanceId();
+
+        try {
+            $logger = null;
+            if (Server::get(\OC\SystemConfig::class)->getValue('installed', false)) {
+                $logger = logger('core');
+            }
+
+            // set the session name to the instance id - which is unique
+            $session = new \OC\Session\Internal(
+                $sessionName,
+                $logger,
+            );
+
+            $cryptoWrapper = Server::get(\OC\Session\CryptoWrapper::class);
+            $session = $cryptoWrapper->wrapSession($session);
+            self::$server->setSession($session);
+
+            // if session can't be started break with http 500 error
+        } catch (Exception $e) {
+            Server::get(LoggerInterface::class)->error($e->getMessage(), ['app' => 'base','exception' => $e]);
+            //show the user a detailed error page
+            Server::get(ITemplateManager::class)->printExceptionErrorPage($e, 500);
+            die();
+        }
+
+        //try to set the session lifetime
+        $sessionLifeTime = self::getSessionLifeTime();
+
+        // session timeout
+        if ($session->exists('LAST_ACTIVITY') && (time() - $session->get('LAST_ACTIVITY') > $sessionLifeTime)) {
+            if (isset($_COOKIE[session_name()])) {
+                setcookie(session_name(), '', -1, self::$WEBROOT ? : '/');
+            }
+            Server::get(IUserSession::class)->logout();
+        }
+
+        if (!self::hasSessionRelaxedExpiry()) {
+            $session->set('LAST_ACTIVITY', time());
+        }
+        $session->close();
+    }
+
+    private static function getSessionLifeTime(): int {
+        return Server::get(\OC\AllConfig::class)->getSystemValueInt('session_lifetime', 60 * 60 * 24);
+    }
+
+    /**
+     * @return bool true if the session expiry should only be done by gc instead of an explicit timeout
+     */
+    public static function hasSessionRelaxedExpiry(): bool {
+        return Server::get(\OC\AllConfig::class)->getSystemValueBool('session_relaxed_expiry', false);
+    }
+
+    /**
+     * Try to set some values to the required Nextcloud default
+     */
+    public static function setRequiredIniValues(): void {
+        // Don't display errors and log them
+        @ini_set('display_errors', '0');
+        @ini_set('log_errors', '1');
+
+        // Try to configure php to enable big file uploads.
+        // This doesn't work always depending on the webserver and php configuration.
+        // Let's try to overwrite some defaults if they are smaller than 1 hour
+
+        if (intval(@ini_get('max_execution_time') ?: 0) < 3600) {
+            @ini_set('max_execution_time', strval(3600));
+        }
+
+        if (intval(@ini_get('max_input_time') ?: 0) < 3600) {
+            @ini_set('max_input_time', strval(3600));
+        }
+
+        // Try to set the maximum execution time to the largest time limit we have
+        if (strpos(@ini_get('disable_functions'), 'set_time_limit') === false) {
+            @set_time_limit(max(intval(@ini_get('max_execution_time')), intval(@ini_get('max_input_time'))));
+        }
+
+        @ini_set('default_charset', 'UTF-8');
+        @ini_set('gd.jpeg_ignore_warning', '1');
+    }
+
+    /**
+     * Send the same site cookies
+     */
+    private static function sendSameSiteCookies(): void {
+        $cookieParams = session_get_cookie_params();
+        $secureCookie = ($cookieParams['secure'] === true) ? 'secure; ' : '';
+        $policies = [
+            'lax',
+            'strict',
+        ];
+
+        // Append __Host to the cookie if it meets the requirements
+        $cookiePrefix = '';
+        if ($cookieParams['secure'] === true && $cookieParams['path'] === '/') {
+            $cookiePrefix = '__Host-';
+        }
+
+        foreach ($policies as $policy) {
+            header(
+                sprintf(
+                    'Set-Cookie: %snc_sameSiteCookie%s=true; path=%s; httponly;' . $secureCookie . 'expires=Fri, 31-Dec-2100 23:59:59 GMT; SameSite=%s',
+                    $cookiePrefix,
+                    $policy,
+                    $cookieParams['path'],
+                    $policy
+                ),
+                false
+            );
+        }
+    }
+
+    /**
+     * Same Site cookie to further mitigate CSRF attacks. This cookie has to
+     * be set in every request if cookies are sent to add a second level of
+     * defense against CSRF.
+     *
+     * If the cookie is not sent this will set the cookie and reload the page.
+     * We use an additional cookie since we want to protect logout CSRF and
+     * also we can't directly interfere with PHP's session mechanism.
+     */
+    private static function performSameSiteCookieProtection(IConfig $config): void {
+        $request = Server::get(IRequest::class);
+
+        // Some user agents are notorious and don't really properly follow HTTP
+        // specifications. For those, have an automated opt-out. Since the protection
+        // for remote.php is applied in base.php as starting point we need to opt out
+        // here.
+        $incompatibleUserAgents = $config->getSystemValue('csrf.optout');
+
+        // Fallback, if csrf.optout is unset
+        if (!is_array($incompatibleUserAgents)) {
+            $incompatibleUserAgents = [
+                // OS X Finder
+                '/^WebDAVFS/',
+                // Windows webdav drive
+                '/^Microsoft-WebDAV-MiniRedir/',
+            ];
+        }
+
+        if ($request->isUserAgent($incompatibleUserAgents)) {
+            return;
+        }
+
+        if (count($_COOKIE) > 0) {
+            $requestUri = $request->getScriptName();
+            $processingScript = explode('/', $requestUri);
+            $processingScript = $processingScript[count($processingScript) - 1];
+
+            // index.php routes are handled in the middleware
+            // and cron.php does not need any authentication at all
+            if ($processingScript === 'index.php'
+                || $processingScript === 'cron.php') {
+                return;
+            }
+
+            // All other endpoints require the lax and the strict cookie
+            if (!$request->passesStrictCookieCheck()) {
+                logger('core')->warning('Request does not pass strict cookie check');
+                self::sendSameSiteCookies();
+                // Debug mode gets access to the resources without strict cookie
+                // due to the fact that the SabreDAV browser also lives there.
+                if (!$config->getSystemValueBool('debug', false)) {
+                    http_response_code(\OCP\AppFramework\Http::STATUS_PRECONDITION_FAILED);
+                    header('Content-Type: application/json');
+                    echo json_encode(['error' => 'Strict Cookie has not been found in request']);
+                    exit();
+                }
+            }
+        } elseif (!isset($_COOKIE['nc_sameSiteCookielax']) || !isset($_COOKIE['nc_sameSiteCookiestrict'])) {
+            self::sendSameSiteCookies();
+        }
+    }
+
+    public static function init(): void {
+        // First handle PHP configuration and copy auth headers to the expected
+        // $_SERVER variable before doing anything Server object related
+        self::setRequiredIniValues();
+        self::handleAuthHeaders();
+
+        // prevent any XML processing from loading external entities
+        libxml_set_external_entity_loader(static function () {
+            return null;
+        });
+
+        // Set default timezone before the Server object is booted
+        if (!date_default_timezone_set('UTC')) {
+            throw new \RuntimeException('Could not set timezone to UTC');
+        }
+
+        // calculate the root directories
+        OC::$SERVERROOT = str_replace('\\', '/', substr(__DIR__, 0, -4));
+
+        // register autoloader
+        $loaderStart = microtime(true);
+        require_once __DIR__ . '/autoloader.php';
+        self::$loader = new \OC\Autoloader([
+            OC::$SERVERROOT . '/lib/private/legacy',
+        ]);
+        if (defined('PHPUNIT_RUN')) {
+            self::$loader->addValidRoot(OC::$SERVERROOT . '/tests');
+        }
+        spl_autoload_register([self::$loader, 'load']);
+        $loaderEnd = microtime(true);
+
+        self::$CLI = (php_sapi_name() == 'cli');
+
+        // Add default composer PSR-4 autoloader, ensure apcu to be disabled
+        self::$composerAutoloader = require_once OC::$SERVERROOT . '/lib/composer/autoload.php';
+        self::$composerAutoloader->setApcuPrefix(null);
+
+
+        try {
+            self::initPaths();
+            // setup 3rdparty autoloader
+            $vendorAutoLoad = OC::$SERVERROOT . '/3rdparty/autoload.php';
+            if (!file_exists($vendorAutoLoad)) {
+                throw new \RuntimeException('Composer autoloader not found, unable to continue. Check the folder "3rdparty". Running "git submodule update --init" will initialize the git submodule that handles the subfolder "3rdparty".');
+            }
+            require_once $vendorAutoLoad;
+        } catch (\RuntimeException $e) {
+            if (!self::$CLI) {
+                http_response_code(503);
+            }
+            // we can't use the template error page here, because this needs the
+            // DI container which isn't available yet
+            print($e->getMessage());
+            exit();
+        }
+
+        // setup the basic server
+        self::$server = new \OC\Server(\OC::$WEBROOT, self::$config);
+        self::$server->boot();
+
+        try {
+            $profiler = new BuiltInProfiler(
+                Server::get(IConfig::class),
+                Server::get(IRequest::class),
+            );
+            $profiler->start();
+        } catch (\Throwable $e) {
+            logger('core')->error('Failed to start profiler: ' . $e->getMessage(), ['app' => 'base']);
+        }
+
+        if (self::$CLI && in_array('--' . \OCP\Console\ReservedOptions::DEBUG_LOG, $_SERVER['argv'])) {
+            \OC\Core\Listener\BeforeMessageLoggedEventListener::setup();
+        }
+
+        $eventLogger = Server::get(\OCP\Diagnostics\IEventLogger::class);
+        $eventLogger->log('autoloader', 'Autoloader', $loaderStart, $loaderEnd);
+        $eventLogger->start('boot', 'Initialize');
+
+        // Override php.ini and log everything if we're troubleshooting
+        if (self::$config->getValue('loglevel') === ILogger::DEBUG) {
+            error_reporting(E_ALL);
+        }
+
+        $systemConfig = Server::get(\OC\SystemConfig::class);
+        self::registerAutoloaderCache($systemConfig);
+
+        // initialize intl fallback if necessary
+        OC_Util::isSetLocaleWorking();
+
+        $config = Server::get(IConfig::class);
+        if (!defined('PHPUNIT_RUN')) {
+            $errorHandler = new OC\Log\ErrorHandler(
+                \OCP\Server::get(\Psr\Log\LoggerInterface::class),
+            );
+            $exceptionHandler = [$errorHandler, 'onException'];
+            if ($config->getSystemValueBool('debug', false)) {
+                set_error_handler([$errorHandler, 'onAll'], E_ALL);
+                if (\OC::$CLI) {
+                    $exceptionHandler = [Server::get(ITemplateManager::class), 'printExceptionErrorPage'];
+                }
+            } else {
+                set_error_handler([$errorHandler, 'onError']);
+            }
+            register_shutdown_function([$errorHandler, 'onShutdown']);
+            set_exception_handler($exceptionHandler);
+        }
+
+        /** @var \OC\AppFramework\Bootstrap\Coordinator $bootstrapCoordinator */
+        $bootstrapCoordinator = Server::get(\OC\AppFramework\Bootstrap\Coordinator::class);
+        $bootstrapCoordinator->runInitialRegistration();
+
+        $eventLogger->start('init_session', 'Initialize session');
+
+        // Check for PHP SimpleXML extension earlier since we need it before our other checks and want to provide a useful hint for web users
+        // see https://github.com/nextcloud/server/pull/2619
+        if (!function_exists('simplexml_load_file')) {
+            throw new \OCP\HintException('The PHP SimpleXML/PHP-XML extension is not installed.', 'Install the extension or make sure it is enabled.');
+        }
+
+        $appManager = Server::get(\OCP\App\IAppManager::class);
+        if ($systemConfig->getValue('installed', false)) {
+            $appManager->loadApps(['session']);
+        }
+        if (!self::$CLI) {
+            self::initSession();
+        }
+        $eventLogger->end('init_session');
+        self::checkConfig();
+        self::checkInstalled($systemConfig);
+
+        OC_Response::addSecurityHeaders();
+
+        self::performSameSiteCookieProtection($config);
+
+        if (!defined('OC_CONSOLE')) {
+            $errors = OC_Util::checkServer($systemConfig);
+            if (count($errors) > 0) {
+                if (!self::$CLI) {
+                    http_response_code(503);
+                    Util::addStyle('guest');
+                    try {
+                        Server::get(ITemplateManager::class)->printGuestPage('', 'error', ['errors' => $errors]);
+                        exit;
+                    } catch (\Exception $e) {
+                        // In case any error happens when showing the error page, we simply fall back to posting the text.
+                        // This might be the case when e.g. the data directory is broken and we can not load/write SCSS to/from it.
+                    }
+                }
+
+                // Convert l10n string into regular string for usage in database
+                $staticErrors = [];
+                foreach ($errors as $error) {
+                    echo $error['error'] . "\n";
+                    echo $error['hint'] . "\n\n";
+                    $staticErrors[] = [
+                        'error' => (string)$error['error'],
+                        'hint' => (string)$error['hint'],
+                    ];
+                }
+
+                try {
+                    $config->setAppValue('core', 'cronErrors', json_encode($staticErrors));
+                } catch (\Exception $e) {
+                    echo('Writing to database failed');
+                }
+                exit(1);
+            } elseif (self::$CLI && $config->getSystemValueBool('installed', false)) {
+                $config->deleteAppValue('core', 'cronErrors');
+            }
+        }
+
+        // User and Groups
+        if (!$systemConfig->getValue('installed', false)) {
+            self::$server->getSession()->set('user_id', '');
+        }
+
+        Server::get(\OCP\IUserManager::class)->registerBackend(new \OC\User\Database());
+        Server::get(\OCP\IGroupManager::class)->addBackend(new \OC\Group\Database());
+
+        // Subscribe to the hook
+        \OCP\Util::connectHook(
+            '\OCA\Files_Sharing\API\Server2Server',
+            'preLoginNameUsedAsUserName',
+            '\OC\User\Database',
+            'preLoginNameUsedAsUserName'
+        );
+
+        //setup extra user backends
+        if (!\OCP\Util::needUpgrade()) {
+            OC_User::setupBackends();
+        } else {
+            // Run upgrades in incognito mode
+            OC_User::setIncognitoMode(true);
+        }
+
+        self::registerCleanupHooks($systemConfig);
+        self::registerShareHooks($systemConfig);
+        self::registerEncryptionWrapperAndHooks();
+        self::registerAccountHooks();
+        self::registerResourceCollectionHooks();
+        self::registerFileReferenceEventListener();
+        self::registerRenderReferenceEventListener();
+        self::registerAppRestrictionsHooks();
+
+        // Make sure that the application class is not loaded before the database is setup
+        if ($systemConfig->getValue('installed', false)) {
+            $appManager->loadApp('settings');
+            /* Build core application to make sure that listeners are registered */
+            Server::get(\OC\Core\Application::class);
+        }
+
+        //make sure temporary files are cleaned up
+        $tmpManager = Server::get(\OCP\ITempManager::class);
+        register_shutdown_function([$tmpManager, 'clean']);
+        $lockProvider = Server::get(\OCP\Lock\ILockingProvider::class);
+        register_shutdown_function([$lockProvider, 'releaseAll']);
+
+        // Check whether the sample configuration has been copied
+        if ($systemConfig->getValue('copied_sample_config', false)) {
+            $l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
+            Server::get(ITemplateManager::class)->printErrorPage(
+                $l->t('Sample configuration detected'),
+                $l->t('It has been detected that the sample configuration has been copied. This can break your installation and is unsupported. Please read the documentation before performing changes on config.php'),
+                503
+            );
+            return;
+        }
+
+        $request = Server::get(IRequest::class);
+        $host = $request->getInsecureServerHost();
+        /**
+         * if the host passed in headers isn't trusted
+         * FIXME: Should not be in here at all :see_no_evil:
+         */
+        if (!OC::$CLI
+            && !Server::get(\OC\Security\TrustedDomainHelper::class)->isTrustedDomain($host)
+            && $config->getSystemValueBool('installed', false)
+        ) {
+            // Allow access to CSS resources
+            $isScssRequest = false;
+            if (strpos($request->getPathInfo() ?: '', '/css/') === 0) {
+                $isScssRequest = true;
+            }
+
+            if (substr($request->getRequestUri(), -11) === '/status.php') {
+                http_response_code(400);
+                header('Content-Type: application/json');
+                echo '{"error": "Trusted domain error.", "code": 15}';
+                exit();
+            }
+
+            if (!$isScssRequest) {
+                http_response_code(400);
+                Server::get(LoggerInterface::class)->info(
+                    'Trusted domain error. "{remoteAddress}" tried to access using "{host}" as host.',
+                    [
+                        'app' => 'core',
+                        'remoteAddress' => $request->getRemoteAddress(),
+                        'host' => $host,
+                    ]
+                );
+
+                $tmpl = Server::get(ITemplateManager::class)->getTemplate('core', 'untrustedDomain', 'guest');
+                $tmpl->assign('docUrl', Server::get(IURLGenerator::class)->linkToDocs('admin-trusted-domains'));
+                $tmpl->printPage();
+
+                exit();
+            }
+        }
+        $eventLogger->end('boot');
+        $eventLogger->log('init', 'OC::init', $loaderStart, microtime(true));
+        $eventLogger->start('runtime', 'Runtime');
+        $eventLogger->start('request', 'Full request after boot');
+        register_shutdown_function(function () use ($eventLogger) {
+            $eventLogger->end('request');
+        });
+
+        register_shutdown_function(function () {
+            $memoryPeak = memory_get_peak_usage();
+            $logLevel = match (true) {
+                $memoryPeak > 500_000_000 => ILogger::FATAL,
+                $memoryPeak > 400_000_000 => ILogger::ERROR,
+                $memoryPeak > 300_000_000 => ILogger::WARN,
+                default => null,
+            };
+            if ($logLevel !== null) {
+                $message = 'Request used more than 300 MB of RAM: ' . Util::humanFileSize($memoryPeak);
+                $logger = Server::get(LoggerInterface::class);
+                $logger->log($logLevel, $message, ['app' => 'core']);
+            }
+        });
+    }
+
+    /**
+     * register hooks for the cleanup of cache and bruteforce protection
+     */
+    public static function registerCleanupHooks(\OC\SystemConfig $systemConfig): void {
+        //don't try to do this before we are properly setup
+        if ($systemConfig->getValue('installed', false) && !\OCP\Util::needUpgrade()) {
+            // NOTE: This will be replaced to use OCP
+            $userSession = Server::get(\OC\User\Session::class);
+            $userSession->listen('\OC\User', 'postLogin', function () use ($userSession) {
+                if (!defined('PHPUNIT_RUN') && $userSession->isLoggedIn()) {
+                    // reset brute force delay for this IP address and username
+                    $uid = $userSession->getUser()->getUID();
+                    $request = Server::get(IRequest::class);
+                    $throttler = Server::get(IThrottler::class);
+                    $throttler->resetDelay($request->getRemoteAddress(), 'login', ['user' => $uid]);
+                }
+
+                try {
+                    $cache = new \OC\Cache\File();
+                    $cache->gc();
+                } catch (\OC\ServerNotAvailableException $e) {
+                    // not a GC exception, pass it on
+                    throw $e;
+                } catch (\OC\ForbiddenException $e) {
+                    // filesystem blocked for this request, ignore
+                } catch (\Exception $e) {
+                    // a GC exception should not prevent users from using OC,
+                    // so log the exception
+                    Server::get(LoggerInterface::class)->warning('Exception when running cache gc.', [
+                        'app' => 'core',
+                        'exception' => $e,
+                    ]);
+                }
+            });
+        }
+    }
+
+    private static function registerEncryptionWrapperAndHooks(): void {
+        /** @var \OC\Encryption\Manager */
+        $manager = Server::get(\OCP\Encryption\IManager::class);
+        Server::get(IEventDispatcher::class)->addListener(
+            BeforeFileSystemSetupEvent::class,
+            $manager->setupStorage(...),
+        );
+
+        $enabled = $manager->isEnabled();
+        if ($enabled) {
+            \OC\Encryption\EncryptionEventListener::register(Server::get(IEventDispatcher::class));
+        }
+    }
+
+    private static function registerAccountHooks(): void {
+        /** @var IEventDispatcher $dispatcher */
+        $dispatcher = Server::get(IEventDispatcher::class);
+        $dispatcher->addServiceListener(UserChangedEvent::class, \OC\Accounts\Hooks::class);
+    }
+
+    private static function registerAppRestrictionsHooks(): void {
+        /** @var \OC\Group\Manager $groupManager */
+        $groupManager = Server::get(\OCP\IGroupManager::class);
+        $groupManager->listen('\OC\Group', 'postDelete', function (\OCP\IGroup $group) {
+            $appManager = Server::get(\OCP\App\IAppManager::class);
+            $apps = $appManager->getEnabledAppsForGroup($group);
+            foreach ($apps as $appId) {
+                $restrictions = $appManager->getAppRestriction($appId);
+                if (empty($restrictions)) {
+                    continue;
+                }
+                $key = array_search($group->getGID(), $restrictions);
+                unset($restrictions[$key]);
+                $restrictions = array_values($restrictions);
+                if (empty($restrictions)) {
+                    $appManager->disableApp($appId);
+                } else {
+                    $appManager->enableAppForGroups($appId, $restrictions);
+                }
+            }
+        });
+    }
+
+    private static function registerResourceCollectionHooks(): void {
+        \OC\Collaboration\Resources\Listener::register(Server::get(IEventDispatcher::class));
+    }
+
+    private static function registerFileReferenceEventListener(): void {
+        \OC\Collaboration\Reference\File\FileReferenceEventListener::register(Server::get(IEventDispatcher::class));
+    }
+
+    private static function registerRenderReferenceEventListener() {
+        \OC\Collaboration\Reference\RenderReferenceEventListener::register(Server::get(IEventDispatcher::class));
+    }
+
+    /**
+     * register hooks for sharing
+     */
+    public static function registerShareHooks(\OC\SystemConfig $systemConfig): void {
+        if ($systemConfig->getValue('installed')) {
+
+            $dispatcher = Server::get(IEventDispatcher::class);
+            $dispatcher->addServiceListener(UserRemovedEvent::class, UserRemovedListener::class);
+            $dispatcher->addServiceListener(GroupDeletedEvent::class, GroupDeletedListener::class);
+            $dispatcher->addServiceListener(UserDeletedEvent::class, UserDeletedListener::class);
+        }
+    }
+
+    protected static function registerAutoloaderCache(\OC\SystemConfig $systemConfig): void {
+        // The class loader takes an optional low-latency cache, which MUST be
+        // namespaced. The instanceid is used for namespacing, but might be
+        // unavailable at this point. Furthermore, it might not be possible to
+        // generate an instanceid via \OC_Util::getInstanceId() because the
+        // config file may not be writable. As such, we only register a class
+        // loader cache if instanceid is available without trying to create one.
+        $instanceId = $systemConfig->getValue('instanceid', null);
+        if ($instanceId) {
+            try {
+                $memcacheFactory = Server::get(\OCP\ICacheFactory::class);
+                self::$loader->setMemoryCache($memcacheFactory->createLocal('Autoloader'));
+            } catch (\Exception $ex) {
+            }
+        }
+    }
+
+    /**
+     * Handle the request
+     */
+    public static function handleRequest(): void {
+        Server::get(\OCP\Diagnostics\IEventLogger::class)->start('handle_request', 'Handle request');
+        $systemConfig = Server::get(\OC\SystemConfig::class);
+
+        // Check if Nextcloud is installed or in maintenance (update) mode
+        if (!$systemConfig->getValue('installed', false)) {
+            \OC::$server->getSession()->clear();
+            $controller = Server::get(\OC\Core\Controller\SetupController::class);
+            $controller->run($_POST);
+            exit();
+        }
+
+        $request = Server::get(IRequest::class);
+        $requestPath = $request->getRawPathInfo();
+        if ($requestPath === '/heartbeat') {
+            return;
+        }
+        if (substr($requestPath, -3) !== '.js') { // we need these files during the upgrade
+            self::checkMaintenanceMode($systemConfig);
+
+            if (\OCP\Util::needUpgrade()) {
+                if (function_exists('opcache_reset')) {
+                    opcache_reset();
+                }
+                if (!((bool)$systemConfig->getValue('maintenance', false))) {
+                    self::printUpgradePage($systemConfig);
+                    exit();
+                }
+            }
+        }
+
+        $appManager = Server::get(\OCP\App\IAppManager::class);
+
+        // Always load authentication apps
+        $appManager->loadApps(['authentication']);
+        $appManager->loadApps(['extended_authentication']);
+
+        // Load minimum set of apps
+        if (!\OCP\Util::needUpgrade()
+            && !((bool)$systemConfig->getValue('maintenance', false))) {
+            // For logged-in users: Load everything
+            if (Server::get(IUserSession::class)->isLoggedIn()) {
+                $appManager->loadApps();
+            } else {
+                // For guests: Load only filesystem and logging
+                $appManager->loadApps(['filesystem', 'logging']);
+
+                // Don't try to login when a client is trying to get a OAuth token.
+                // OAuth needs to support basic auth too, so the login is not valid
+                // inside Nextcloud and the Login exception would ruin it.
+                if ($request->getRawPathInfo() !== '/apps/oauth2/api/v1/token') {
+                    self::handleLogin($request);
+                }
+            }
+        }
+
+        if (!self::$CLI) {
+            try {
+                if (!\OCP\Util::needUpgrade()) {
+                    $appManager->loadApps(['filesystem', 'logging']);
+                    $appManager->loadApps();
+                }
+                Server::get(\OC\Route\Router::class)->match($request->getRawPathInfo());
+                return;
+            } catch (Symfony\Component\Routing\Exception\ResourceNotFoundException $e) {
+                //header('HTTP/1.0 404 Not Found');
+            } catch (Symfony\Component\Routing\Exception\MethodNotAllowedException $e) {
+                http_response_code(405);
+                return;
+            }
+        }
+
+        // Handle WebDAV
+        if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'PROPFIND') {
+            // not allowed any more to prevent people
+            // mounting this root directly.
+            // Users need to mount remote.php/webdav instead.
+            http_response_code(405);
+            return;
+        }
+
+        // Handle requests for JSON or XML
+        $acceptHeader = $request->getHeader('Accept');
+        if (in_array($acceptHeader, ['application/json', 'application/xml'], true)) {
+            http_response_code(404);
+            return;
+        }
+
+        // Handle resources that can't be found
+        // This prevents browsers from redirecting to the default page and then
+        // attempting to parse HTML as CSS and similar.
+        $destinationHeader = $request->getHeader('Sec-Fetch-Dest');
+        if (in_array($destinationHeader, ['font', 'script', 'style'])) {
+            http_response_code(404);
+            return;
+        }
+
+        // Redirect to the default app or login only as an entry point
+        if ($requestPath === '') {
+            // Someone is logged in
+            if (Server::get(IUserSession::class)->isLoggedIn()) {
+                header('Location: ' . Server::get(IURLGenerator::class)->linkToDefaultPageUrl());
+            } else {
+                // Not handled and not logged in
+                header('Location: ' . Server::get(IURLGenerator::class)->linkToRouteAbsolute('core.login.showLoginForm'));
+            }
+            return;
+        }
+
+        try {
+            Server::get(\OC\Route\Router::class)->match('/error/404');
+        } catch (\Exception $e) {
+            if (!$e instanceof MethodNotAllowedException) {
+                logger('core')->emergency($e->getMessage(), ['exception' => $e]);
+            }
+            $l = Server::get(\OCP\L10N\IFactory::class)->get('lib');
+            Server::get(ITemplateManager::class)->printErrorPage(
+                '404',
+                $l->t('The page could not be found on the server.'),
+                404
+            );
+        }
+    }
+
+    /**
+     * Check login: apache auth, auth token, basic auth
+     */
+    public static function handleLogin(OCP\IRequest $request): bool {
+        if ($request->getHeader('X-Nextcloud-Federation')) {
+            return false;
+        }
+        $userSession = Server::get(\OC\User\Session::class);
+        if (OC_User::handleApacheAuth()) {
+            return true;
+        }
+        if (self::tryAppAPILogin($request)) {
+            return true;
+        }
+        if ($userSession->tryTokenLogin($request)) {
+            return true;
+        }
+        if (isset($_COOKIE['nc_username'])
+            && isset($_COOKIE['nc_token'])
+            && isset($_COOKIE['nc_session_id'])
+            && $userSession->loginWithCookie($_COOKIE['nc_username'], $_COOKIE['nc_token'], $_COOKIE['nc_session_id'])) {
+            return true;
+        }
+        if ($userSession->tryBasicAuthLogin($request, Server::get(IThrottler::class))) {
+            return true;
+        }
+        return false;
+    }
+
+    protected static function handleAuthHeaders(): void {
+        //copy http auth headers for apache+php-fcgid work around
+        if (isset($_SERVER['HTTP_XAUTHORIZATION']) && !isset($_SERVER['HTTP_AUTHORIZATION'])) {
+            $_SERVER['HTTP_AUTHORIZATION'] = $_SERVER['HTTP_XAUTHORIZATION'];
+        }
+
+        // Extract PHP_AUTH_USER/PHP_AUTH_PW from other headers if necessary.
+        $vars = [
+            'HTTP_AUTHORIZATION', // apache+php-cgi work around
+            'REDIRECT_HTTP_AUTHORIZATION', // apache+php-cgi alternative
+        ];
+        foreach ($vars as $var) {
+            if (isset($_SERVER[$var]) && is_string($_SERVER[$var]) && preg_match('/Basic\s+(.*)$/i', $_SERVER[$var], $matches)) {
+                $credentials = explode(':', base64_decode($matches[1]), 2);
+                if (count($credentials) === 2) {
+                    $_SERVER['PHP_AUTH_USER'] = $credentials[0];
+                    $_SERVER['PHP_AUTH_PW'] = $credentials[1];
+                    break;
+                }
+            }
+        }
+    }
+
+    protected static function tryAppAPILogin(OCP\IRequest $request): bool {
+        if (!$request->getHeader('AUTHORIZATION-APP-API')) {
+            return false;
+        }
+        $appManager = Server::get(OCP\App\IAppManager::class);
+        if (!$appManager->isEnabledForAnyone('app_api')) {
+            return false;
+        }
+        try {
+            $appAPIService = Server::get(OCA\AppAPI\Service\AppAPIService::class);
+            return $appAPIService->validateExAppRequestToNC($request);
+        } catch (\Psr\Container\NotFoundExceptionInterface|\Psr\Container\ContainerExceptionInterface $e) {
+            return false;
+        }
+    }
 }
 
 OC::init();