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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2017 Robin Appelman <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Robin Appelman <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license GNU AGPL version 3 or any later version  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is free software: you can redistribute it and/or modify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * it under the terms of the GNU Affero General Public License as  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * published by the Free Software Foundation, either version 3 of the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * License, or (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is distributed in the hope that it will be useful,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * but WITHOUT ANY WARRANTY; without even the implied warranty of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * GNU Affero General Public License for more details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * You should have received a copy of the GNU Affero General Public License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * along with this program.  If not, see <http://www.gnu.org/licenses/>.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OC\Files\ObjectStore;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Aws\S3\S3Client;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                const S3_UPLOAD_PART_SIZE = 524288000; // 500MB  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                trait S3ObjectTrait { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Returns the connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return S3Client connected client  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws \Exception if connection could not be made  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	abstract protected function getConnection();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $urn the unified resource name used to identify the object  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return resource stream with the read data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws \Exception when something goes wrong, message will be logged  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @since 7.0.0  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	function readObject($urn) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$client = $this->getConnection();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$command = $client->getCommand('GetObject', [ | 
            
            
                                                                        
                            
            
                                    
            
            
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                			'Bucket' => $this->bucket,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			'Key' => $urn  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$request = \Aws\serialize($command);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$headers = [];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		foreach ($request->getHeaders() as $key => $values) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                			foreach ($values as $value) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                				$headers[] = "$key: $value";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$opts = [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			'http' => [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                				'header' => $headers  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			]  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$context = stream_context_create($opts);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		return fopen($request->getUri(), 'r', false, $context);  | 
            
                            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $urn the unified resource name used to identify the object  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param resource $stream stream with the data to write  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws \Exception when something goes wrong, message will be logged  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @since 7.0.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	function writeObject($urn, $stream) { | 
            
                            
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                		$this->getConnection()->upload($this->bucket, $urn, $stream, 'private', [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'mup_threshold' => S3_UPLOAD_PART_SIZE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'part_size' => S3_UPLOAD_PART_SIZE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $urn the unified resource name used to identify the object  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws \Exception when something goes wrong, message will be logged  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @since 7.0.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	function deleteObject($urn) { | 
            
                            
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                		$this->getConnection()->deleteObject([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'Bucket' => $this->bucket,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'Key' => $urn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function objectExists($urn) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $this->getConnection()->doesObjectExist($this->bucket, $urn);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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If the returned type also contains false, it is an indicator that maybe an error condition leading to the specific return statement remains unhandled.