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<?php |
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/** |
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* Copyright (c) 2015 Victor Dubiniuk <[email protected]> |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. |
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* See the COPYING-README file. |
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*/ |
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namespace OCA\Files_Antivirus; |
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use OCA\Files_Antivirus\Activity\Provider; |
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use OCA\Files_Antivirus\AppInfo\Application; |
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use OCA\Files_Antivirus\Db\ItemMapper; |
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use OCP\Activity\IManager as ActivityManager; |
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use OCP\App; |
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use OCP\AppFramework\Db\DoesNotExistException; |
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use OCP\Files\File; |
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use OCP\Files\IRootFolder; |
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use OCA\Files_Trashbin\Trash\ITrashManager; |
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use OCP\ILogger; |
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class Item { |
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/** |
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* file handle, user to read from the file |
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* @var resource |
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*/ |
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protected $fileHandle; |
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/** @var AppConfig */ |
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private $config; |
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/** @var ActivityManager */ |
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private $activityManager; |
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/** @var ItemMapper */ |
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private $itemMapper; |
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/** @var ILogger */ |
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private $logger; |
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/** @var IRootFolder */ |
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private $rootFolder; |
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/** @var File */ |
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private $file; |
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/** |
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* Item constructor. |
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* |
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* @param AppConfig $appConfig |
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* @param ActivityManager $activityManager |
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* @param ItemMapper $itemMapper |
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* @param ILogger $logger |
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* @param IRootFolder $rootFolder |
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* @param File $file |
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*/ |
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public function __construct(AppConfig $appConfig, |
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ActivityManager $activityManager, |
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ItemMapper $itemMapper, |
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ILogger $logger, |
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IRootFolder $rootFolder, |
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File $file) { |
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$this->config = $appConfig; |
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$this->activityManager = $activityManager; |
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$this->itemMapper = $itemMapper; |
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$this->logger = $logger; |
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$this->rootFolder = $rootFolder; |
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$this->file = $file; |
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} |
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/** |
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* Reads a file portion by portion until the very end |
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* @return string|boolean |
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*/ |
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public function fread() { |
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if (!($this->file->getSize() > 0)) { |
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return false; |
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} |
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if (is_null($this->fileHandle)) { |
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$this->getFileHandle(); |
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} |
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if (!is_null($this->fileHandle) && !$this->feof()) { |
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return fread($this->fileHandle, $this->config->getAvChunkSize()); |
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} |
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return false; |
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} |
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/** |
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* Action to take if this item is infected |
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*/ |
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public function processInfected(Status $status) { |
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$infectedAction = $this->config->getAvInfectedAction(); |
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$shouldDelete = $infectedAction === 'delete'; |
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$message = $shouldDelete ? Provider::MESSAGE_FILE_DELETED : ''; |
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$userFolder = $this->rootFolder->getUserFolder($this->file->getOwner()->getUID()); |
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$path = $userFolder->getRelativePath($this->file->getPath()); |
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$activity = $this->activityManager->generateEvent(); |
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$activity->setApp(Application::APP_NAME) |
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->setSubject(Provider::SUBJECT_VIRUS_DETECTED_SCAN, [$status->getDetails()]) |
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->setMessage($message) |
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->setObject('file', $this->file->getId(), $path) |
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->setAffectedUser($this->file->getOwner()->getUID()) |
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->setType(Provider::TYPE_VIRUS_DETECTED); |
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$this->activityManager->publish($activity); |
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if ($shouldDelete) { |
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$this->logError('Infected file deleted. ' . $status->getDetails()); |
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$this->deleteFile(); |
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} else { |
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$this->logError('File is infected. ' . $status->getDetails()); |
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} |
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} |
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/** |
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* Action to take if this item status is unclear |
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* @param Status $status |
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*/ |
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public function processUnchecked(Status $status) { |
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//TODO: Show warning to the user: The file can not be checked |
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$this->logError('Not Checked. ' . $status->getDetails()); |
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} |
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/** |
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* Action to take if this item status is not infected |
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*/ |
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public function processClean() { |
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try { |
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try { |
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$item = $this->itemMapper->findByFileId($this->file->getId()); |
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$this->itemMapper->delete($item); |
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} catch (DoesNotExistException $e) { |
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//Just ignore |
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} |
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$item = new \OCA\Files_Antivirus\Db\Item(); |
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$item->setFileid($this->file->getId()); |
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$item->setCheckTime(time()); |
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$this->itemMapper->insert($item); |
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} catch(\Exception $e) { |
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$this->logger->error(__METHOD__.', exception: '.$e->getMessage(), ['app' => 'files_antivirus']); |
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} |
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} |
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/** |
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* Check if the end of file is reached |
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* @return boolean |
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*/ |
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private function feof() { |
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$isDone = feof($this->fileHandle); |
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if ($isDone) { |
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$this->logDebug('Scan is done'); |
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fclose($this->fileHandle); |
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$this->fileHandle = null; |
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} |
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return $isDone; |
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} |
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/** |
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* Opens a file for reading |
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* @throws \RuntimeException |
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*/ |
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private function getFileHandle() { |
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$fileHandle = $this->file->fopen('r'); |
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if ($fileHandle === false) { |
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$this->logError('Can not open for reading.'); |
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throw new \RuntimeException(); |
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} |
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$this->logDebug('Scan started'); |
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$this->fileHandle = $fileHandle; |
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} |
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/** |
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* Delete infected file |
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*/ |
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private function deleteFile() { |
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//prevent from going to trashbin |
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if (App::isEnabled('files_trashbin')) { |
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/** @var ITrashManager $trashManager */ |
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$trashManager = \OC::$server->query(ITrashManager::class); |
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$trashManager->pauseTrash(); |
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} |
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$this->file->delete(); |
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if (App::isEnabled('files_trashbin')) { |
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/** @var ITrashManager $trashManager */ |
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$trashManager = \OC::$server->query(ITrashManager::class); |
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$trashManager->resumeTrash(); |
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} |
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} |
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private function generateExtraInfo() { |
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$owner = $this->file->getOwner(); |
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if ($owner === null) { |
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$ownerInfo = 'Account: NO OWNER FOUND'; |
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} else { |
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$ownerInfo = 'Account: ' . $owner->getUID(); |
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} |
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$extra = ' File: ' . $this->file->getId() |
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. $ownerInfo |
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. ' Path: ' . $this->file->getPath(); |
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return $extra; |
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} |
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/** |
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* @param string $message |
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*/ |
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public function logDebug($message) { |
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$this->logger->debug($message . $this->generateExtraInfo(), ['app' => 'files_antivirus']); |
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} |
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/** |
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* @param string $message |
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*/ |
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public function logError($message) { |
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$this->logger->error($message . $this->generateExtraInfo(), ['app' => 'files_antivirus']); |
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} |
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} |
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nextcloud /
files_antivirus
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