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sources/apps/files_external/lib/dropbox.php 8.32 KB
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  <?php
  
  /**
  * ownCloud
  *
  * @author Michael Gapczynski
  * @copyright 2012 Michael Gapczynski mtgap@owncloud.com
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
  * License as published by the Free Software Foundation; either
  * version 3 of the License, or any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
  *
  * You should have received a copy of the GNU Affero General Public
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
  
  namespace OC\Files\Storage;
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  require_once __DIR__ . '/../3rdparty/Dropbox/autoload.php';
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  class Dropbox extends \OC\Files\Storage\Common {
  
  	private $dropbox;
  	private $root;
  	private $id;
  	private $metaData = array();
  
  	private static $tempFiles = array();
  
  	public function __construct($params) {
  		if (isset($params['configured']) && $params['configured'] == 'true'
  			&& isset($params['app_key'])
  			&& isset($params['app_secret'])
  			&& isset($params['token'])
  			&& isset($params['token_secret'])
  		) {
  			$this->root = isset($params['root']) ? $params['root'] : '';
  			$this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $this->root;
  			$oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
  			$oauth->setToken($params['token'], $params['token_secret']);
  			$this->dropbox = new \Dropbox_API($oauth, 'dropbox');
  		} else {
  			throw new \Exception('Creating \OC\Files\Storage\Dropbox storage failed');
  		}
  	}
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  	private function deleteMetaData($path) {
  		$path = $this->root.$path;
  		if (isset($this->metaData[$path])) {
  			unset($this->metaData[$path]);
  			return true;
  		}
  		return false;
  	}
  
  	/**
  	 * @brief Returns the path's metadata
  	 * @param $path path for which to return the metadata
  	 * @param $list if true, also return the directory's contents
  	 * @return directory contents if $list is true, file metadata if $list is
  	 * false, null if the file doesn't exist or "false" if the operation failed
  	 */
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  	private function getMetaData($path, $list = false) {
  		$path = $this->root.$path;
  		if ( ! $list && isset($this->metaData[$path])) {
  			return $this->metaData[$path];
  		} else {
  			if ($list) {
  				try {
  					$response = $this->dropbox->getMetaData($path);
  				} catch (\Exception $exception) {
  					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  					return false;
  				}
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  				$contents = array();
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  				if ($response && isset($response['contents'])) {
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  					// Cache folder's contents
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  					foreach ($response['contents'] as $file) {
  						if (!isset($file['is_deleted']) || !$file['is_deleted']) {
  							$this->metaData[$path.'/'.basename($file['path'])] = $file;
  							$contents[] = $file;
  						}
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  					}
  					unset($response['contents']);
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  				}
  				if (!isset($response['is_deleted']) || !$response['is_deleted']) {
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  					$this->metaData[$path] = $response;
  				}
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  				// Return contents of folder only
  				return $contents;
  			} else {
  				try {
  					$response = $this->dropbox->getMetaData($path, 'false');
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  					if (!isset($response['is_deleted']) || !$response['is_deleted']) {
  						$this->metaData[$path] = $response;
  						return $response;
  					}
  					return null;
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  				} catch (\Exception $exception) {
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  					if ($exception instanceof \Dropbox_Exception_NotFound) {
  						// don't log, might be a file_exist check
  						return false;
  					}
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  					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  					return false;
  				}
  			}
  		}
  	}
  
  	public function getId(){
  		return $this->id;
  	}
  
  	public function mkdir($path) {
  		$path = $this->root.$path;
  		try {
  			$this->dropbox->createFolder($path);
  			return true;
  		} catch (\Exception $exception) {
  			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			return false;
  		}
  	}
  
  	public function rmdir($path) {
  		return $this->unlink($path);
  	}
  
  	public function opendir($path) {
  		$contents = $this->getMetaData($path, true);
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  		if ($contents !== false) {
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  			$files = array();
  			foreach ($contents as $file) {
  				$files[] = basename($file['path']);
  			}
  			\OC\Files\Stream\Dir::register('dropbox'.$path, $files);
  			return opendir('fakedir://dropbox'.$path);
  		}
  		return false;
  	}
  
  	public function stat($path) {
  		$metaData = $this->getMetaData($path);
  		if ($metaData) {
  			$stat['size'] = $metaData['bytes'];
  			$stat['atime'] = time();
  			$stat['mtime'] = (isset($metaData['modified'])) ? strtotime($metaData['modified']) : time();
  			return $stat;
  		}
  		return false;
  	}
  
  	public function filetype($path) {
  		if ($path == '' || $path == '/') {
  			return 'dir';
  		} else {
  			$metaData = $this->getMetaData($path);
  			if ($metaData) {
  				if ($metaData['is_dir'] == 'true') {
  					return 'dir';
  				} else {
  					return 'file';
  				}
  			}
  		}
  		return false;
  	}
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  	public function file_exists($path) {
  		if ($path == '' || $path == '/') {
  			return true;
  		}
  		if ($this->getMetaData($path)) {
  			return true;
  		}
  		return false;
  	}
  
  	public function unlink($path) {
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  		try {
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  			$this->dropbox->delete($this->root.$path);
  			$this->deleteMetaData($path);
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  			return true;
  		} catch (\Exception $exception) {
  			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			return false;
  		}
  	}
  
  	public function rename($path1, $path2) {
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  		try {
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  			// overwrite if target file exists and is not a directory
  			$destMetaData = $this->getMetaData($path2);
  			if (isset($destMetaData) && $destMetaData !== false && !$destMetaData['is_dir']) {
  				$this->unlink($path2);
  			}
  			$this->dropbox->move($this->root.$path1, $this->root.$path2);
  			$this->deleteMetaData($path1);
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  			return true;
  		} catch (\Exception $exception) {
  			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			return false;
  		}
  	}
  
  	public function copy($path1, $path2) {
  		$path1 = $this->root.$path1;
  		$path2 = $this->root.$path2;
  		try {
  			$this->dropbox->copy($path1, $path2);
  			return true;
  		} catch (\Exception $exception) {
  			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			return false;
  		}
  	}
  
  	public function fopen($path, $mode) {
  		$path = $this->root.$path;
  		switch ($mode) {
  			case 'r':
  			case 'rb':
  				$tmpFile = \OC_Helper::tmpFile();
  				try {
  					$data = $this->dropbox->getFile($path);
  					file_put_contents($tmpFile, $data);
  					return fopen($tmpFile, 'r');
  				} catch (\Exception $exception) {
  					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  					return false;
  				}
  			case 'w':
  			case 'wb':
  			case 'a':
  			case 'ab':
  			case 'r+':
  			case 'w+':
  			case 'wb+':
  			case 'a+':
  			case 'x':
  			case 'x+':
  			case 'c':
  			case 'c+':
  				if (strrpos($path, '.') !== false) {
  					$ext = substr($path, strrpos($path, '.'));
  				} else {
  					$ext = '';
  				}
  				$tmpFile = \OC_Helper::tmpFile($ext);
  				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
  				if ($this->file_exists($path)) {
  					$source = $this->fopen($path, 'r');
  					file_put_contents($tmpFile, $source);
  				}
  				self::$tempFiles[$tmpFile] = $path;
  				return fopen('close://'.$tmpFile, $mode);
  		}
  		return false;
  	}
  
  	public function writeBack($tmpFile) {
  		if (isset(self::$tempFiles[$tmpFile])) {
  			$handle = fopen($tmpFile, 'r');
  			try {
  				$this->dropbox->putFile(self::$tempFiles[$tmpFile], $handle);
  				unlink($tmpFile);
  			} catch (\Exception $exception) {
  				\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			}
  		}
  	}
  
  	public function getMimeType($path) {
  		if ($this->filetype($path) == 'dir') {
  			return 'httpd/unix-directory';
  		} else {
  			$metaData = $this->getMetaData($path);
  			if ($metaData) {
  				return $metaData['mime_type'];
  			}
  		}
  		return false;
  	}
  
  	public function free_space($path) {
  		try {
  			$info = $this->dropbox->getAccountInfo();
  			return $info['quota_info']['quota'] - $info['quota_info']['normal'];
  		} catch (\Exception $exception) {
  			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
  			return false;
  		}
  	}
  
  	public function touch($path, $mtime = null) {
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  		if ($this->file_exists($path)) {
  			return false;
  		} else {
  			$this->file_put_contents($path, '');
  		}
  		return true;
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  	}
  
  }