util = $util; $this->mountManager = $mountManager; $this->encryptionManager = $encryptionManager; $this->file = $file; $this->logger = $logger; $this->uid = $uid; } /** * hook after file was shared */ public function postShared(string $nodeType, int $nodeId): void { if ($this->encryptionManager->isEnabled()) { if ($nodeType === 'file' || $nodeType === 'folder') { $path = Filesystem::getPath($nodeId); [$owner, $ownerPath] = $this->getOwnerPath($path); $absPath = '/' . $owner . '/files/' . $ownerPath; $this->update($nodeType === 'folder', $absPath); } } } /** * hook after file was unshared */ public function postUnshared(string $nodeType, int $nodeId): void { if ($this->encryptionManager->isEnabled()) { if ($nodeType === 'file' || $nodeType === 'folder') { $path = Filesystem::getPath($nodeId); [$owner, $ownerPath] = $this->getOwnerPath($path); $absPath = '/' . $owner . '/files/' . $ownerPath; $this->update($nodeType === 'folder', $absPath); } } } /** * inform encryption module that a file was restored from the trash bin, * e.g. to update the encryption keys */ public function postRestore(bool $directory, string $filePath): void { if ($this->encryptionManager->isEnabled()) { $path = Filesystem::normalizePath('/' . $this->uid . '/files/' . $filePath); $this->update($directory, $path); } } /** * inform encryption module that a file was renamed, * e.g. to update the encryption keys */ public function postRename(bool $directory, string $source, string $target): void { if ( $this->encryptionManager->isEnabled() && dirname($source) !== dirname($target) ) { [$owner, $ownerPath] = $this->getOwnerPath($target); $absPath = '/' . $owner . '/files/' . $ownerPath; $this->update($directory, $absPath); } } /** * get owner and path relative to data//files * * @param string $path path to file for current user * @return array ['owner' => $owner, 'path' => $path] * @throws \InvalidArgumentException */ protected function getOwnerPath($path) { $info = Filesystem::getFileInfo($path); $owner = Filesystem::getOwner($path); $view = new View('/' . $owner . '/files'); $path = $view->getPath($info->getId()); if ($path === null) { throw new InvalidArgumentException('No file found for ' . $info->getId()); } return [$owner, $path]; } /** * notify encryption module about added/removed users from a file/folder * * @param string $path relative to data/ * @throws Exceptions\ModuleDoesNotExistsException */ public function update(bool $directory, string $path): 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 a folder was shared, get a list of all (sub-)folders if ($directory) { $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 ]); } } } }