| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Copyright (c) 2015 Victor Dubiniuk <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * This file is licensed under the Affero General Public License version 3 or | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * later. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * See the COPYING-README file. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | namespace OCA\Files_Antivirus; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | use OCA\Files_Antivirus\Activity\Provider; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use OCA\Files_Antivirus\AppInfo\Application; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use OCA\Files_Antivirus\Db\ItemMapper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use OCP\Activity\IManager as ActivityManager; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | use OCP\App; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use OCP\AppFramework\Db\DoesNotExistException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use OCP\Files\File; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use OCP\IL10N; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use OCP\ILogger; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | class Item implements IScannable{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | 	 * file handle, user to read from the file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 	 * @var resource | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 	protected $fileHandle; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 	/** @var IL10N */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | 	private $l10n; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 	/** @var AppConfig */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 	private $config; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 	/** @var ActivityManager */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 	private $activityManager; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	/** @var ItemMapper */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	private $itemMapper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 	/** @var ILogger */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 	private $logger; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 	/** @var File */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	private $file; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 46 |  | View Code Duplication | 	public function __construct(IL10N $l10n, | 
                            
                    |  |  |  | 
                                                                                        
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                | 47 |  |  | 								AppConfig $appConfig, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 								ActivityManager $activityManager, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 								ItemMapper $itemMapper, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 								ILogger $logger, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 								File $file) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 		$this->l10n = $l10n; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 		$this->config = $appConfig; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 		$this->activityManager = $activityManager; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 		$this->itemMapper = $itemMapper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 		$this->logger = $logger; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 		$this->file = $file; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 	 * Is this file good for scanning?  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 	 * @return boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	public function isValid() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 		return $this->file->getSize() > 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 	 * Reads a file portion by portion until the very end | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 	 * @return string|boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	public function fread() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 		if (!$this->isValid()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 			return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 		if (is_null($this->fileHandle)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 			$this->getFileHandle(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 		 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 		if (!is_null($this->fileHandle) && !$this->feof()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 			return fread($this->fileHandle, $this->config->getAvChunkSize()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 	 * Action to take if this item is infected | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 	 * @param Status $status | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	public function processInfected(Status $status) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 		$infectedAction = $this->config->getAvInfectedAction(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 		 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 		$shouldDelete = $infectedAction === 'delete'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 		 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 		$message = $shouldDelete ? Provider::MESSAGE_FILE_DELETED : ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 		$activity = $this->activityManager->generateEvent(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 		$activity->setApp(Application::APP_NAME) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 			->setSubject(Provider::SUBJECT_VIRUS_DETECTED, [$this->file->getPath(), $status->getDetails()]) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 			->setMessage($message) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 			->setObject('file', $this->file->getId(), $this->file->getPath()) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 			->setAffectedUser($this->file->getOwner()->getUID()) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 			->setType(Provider::TYPE_VIRUS_DETECTED); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 		$this->activityManager->publish($activity); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 		if ($shouldDelete) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 			$this->logError('Infected file deleted. ' . $status->getDetails()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 			$this->deleteFile(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 			$this->logError('File is infected. '  . $status->getDetails()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 	 * Action to take if this item status is unclear | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 	 * @param Status $status | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 	 * @param boolean $isBackground | 
                            
                    |  |  |  | 
                                                                                        
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                | 118 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	public function processUnchecked(Status $status) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 		//TODO: Show warning to the user: The file can not be checked | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 		$this->logError('Not Checked. ' . $status->getDetails()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 	 * Action to take if this item status is not infected | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 	 * @param Status $status | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 	 * @param boolean $isBackground | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 	public function processClean(Status $status, $isBackground) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 130 |  |  | 		if (!$isBackground) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 		try { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 			try { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 				$item = $this->itemMapper->findByFileId($this->file->getId()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 				$this->itemMapper->delete($item); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 			} catch (DoesNotExistException $e) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 138 |  |  | 				//Just ignore | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 			$item = new \OCA\Files_Antivirus\Db\Item(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 			$item->setFileid($this->file->getId()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 			$item->setCheckTime(time()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 			$this->itemMapper->insert($item); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		} catch(\Exception $e) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 			$this->logger->error(__METHOD__.', exception: '.$e->getMessage(), ['app' => 'files_antivirus']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 	 * Check if the end of file is reached | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 	 * @return boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 	private function feof() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 		$isDone = feof($this->fileHandle); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 		if ($isDone) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 			$this->logDebug('Scan is done'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 			fclose($this->fileHandle); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 			$this->fileHandle = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 		return $isDone; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 	 * Opens a file for reading | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 	 * @throws \RuntimeException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 	private function getFileHandle() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 		$fileHandle = $this->file->fopen('r'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 		if ($fileHandle === false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 			$this->logError('Can not open for reading.'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 			throw new \RuntimeException(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		$this->logDebug('Scan started'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 		$this->fileHandle = $fileHandle; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 	 * Delete infected file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 	private function deleteFile() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 		//prevent from going to trashbin | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  | 		if (App::isEnabled('files_trashbin')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 			\OCA\Files_Trashbin\Storage::preRenameHook([]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 		$this->file->delete(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 		if (App::isEnabled('files_trashbin')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 			\OCA\Files_Trashbin\Storage::postRenameHook([]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  | 	 * @param string $message | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 	public function logDebug($message) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 		$extra = ' File: ' . $this->file->getId() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 				. 'Account: ' . $this->file->getOwner()->getUID() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 				. ' Path: ' . $this->file->getPath(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 		$this->logger->debug($message . $extra, ['app' => 'files_antivirus']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 	 * @param string $message | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 205 |  |  | 	 */ | 
            
                                                        
            
                                    
            
            
                | 206 |  |  | 	public function logError($message) { | 
            
                                                        
            
                                    
            
            
                | 207 |  |  | 		$ownerInfo = 'Account: ' . $this->file->getOwner()->getUID(); | 
            
                                                        
            
                                    
            
            
                | 208 |  |  | 		$extra = ' File: ' . $this->file->getId() | 
            
                                                        
            
                                    
            
            
                | 209 |  |  | 				. $ownerInfo  | 
            
                                                        
            
                                    
            
            
                | 210 |  |  | 				. ' Path: ' . $this->file->getPath(); | 
            
                                                        
            
                                    
            
            
                | 211 |  |  | 		$this->logger->error($message . $extra, ['app' => 'files_antivirus']); | 
            
                                                        
            
                                    
            
            
                | 212 |  |  | 	} | 
            
                                                        
            
                                    
            
            
                | 213 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 214 |  |  |  | 
            
                        
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.