359 lines
10 KiB
PHP
359 lines
10 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Michael Gapczynski <GapczynskiM@gmail.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Philipp Kapfer <philipp.kapfer@gmx.at>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code 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, version 3,
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* as published by the Free Software Foundation.
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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, version 3,
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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 OCA\Files_External\Lib\Storage;
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use GuzzleHttp\Exception\RequestException;
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use Icewind\Streams\IteratorDirectory;
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use Icewind\Streams\RetryWrapper;
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use OCP\Files\StorageNotAvailableException;
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require_once __DIR__ . '/../../../3rdparty/Dropbox/autoload.php';
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class Dropbox extends \OC\Files\Storage\Common {
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private $dropbox;
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private $root;
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private $id;
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private $metaData = array();
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private $oauth;
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private static $tempFiles = array();
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public function __construct($params) {
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if (isset($params['configured']) && $params['configured'] == 'true'
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&& isset($params['app_key'])
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&& isset($params['app_secret'])
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&& isset($params['token'])
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&& isset($params['token_secret'])
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) {
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$this->root = isset($params['root']) ? $params['root'] : '';
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$this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $this->root;
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$this->oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
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$this->oauth->setToken($params['token'], $params['token_secret']);
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// note: Dropbox_API connection is lazy
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$this->dropbox = new \Dropbox_API($this->oauth, 'auto');
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} else {
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throw new \Exception('Creating Dropbox storage failed');
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}
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}
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/**
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* @param string $path
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*/
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private function deleteMetaData($path) {
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$path = ltrim($this->root.$path, '/');
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if (isset($this->metaData[$path])) {
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unset($this->metaData[$path]);
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return true;
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}
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return false;
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}
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private function setMetaData($path, $metaData) {
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$this->metaData[ltrim($path, '/')] = $metaData;
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}
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/**
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* Returns the path's metadata
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* @param string $path path for which to return the metadata
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* @param bool $list if true, also return the directory's contents
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* @return mixed directory contents if $list is true, file metadata if $list is
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* false, null if the file doesn't exist or "false" if the operation failed
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*/
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private function getDropBoxMetaData($path, $list = false) {
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$path = ltrim($this->root.$path, '/');
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if ( ! $list && isset($this->metaData[$path])) {
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return $this->metaData[$path];
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} else {
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if ($list) {
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try {
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$response = $this->dropbox->getMetaData($path);
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} catch (\Dropbox_Exception_Forbidden $e) {
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throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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$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 $file) {
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if (!isset($file['is_deleted']) || !$file['is_deleted']) {
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$this->setMetaData($path.'/'.basename($file['path']), $file);
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$contents[] = $file;
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}
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}
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unset($response['contents']);
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}
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if (!isset($response['is_deleted']) || !$response['is_deleted']) {
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$this->setMetaData($path, $response);
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}
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// Return contents of folder only
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return $contents;
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} else {
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try {
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$requestPath = $path;
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if ($path === '.') {
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$requestPath = '';
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}
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$response = $this->dropbox->getMetaData($requestPath, 'false');
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if (!isset($response['is_deleted']) || !$response['is_deleted']) {
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$this->setMetaData($path, $response);
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return $response;
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}
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return null;
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} catch (\Dropbox_Exception_Forbidden $e) {
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throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
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} catch (\Exception $exception) {
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if ($exception instanceof \Dropbox_Exception_NotFound) {
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// don't log, might be a file_exist check
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return false;
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}
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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}
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}
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public function getId(){
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return $this->id;
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}
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public function mkdir($path) {
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$path = $this->root.$path;
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try {
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$this->dropbox->createFolder($path);
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return true;
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function rmdir($path) {
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return $this->unlink($path);
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}
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public function opendir($path) {
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$contents = $this->getDropBoxMetaData($path, true);
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if ($contents !== false) {
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$files = array();
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foreach ($contents as $file) {
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$files[] = basename($file['path']);
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}
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return IteratorDirectory::wrap($files);
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}
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return false;
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}
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public function stat($path) {
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$metaData = $this->getDropBoxMetaData($path);
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if ($metaData) {
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$stat['size'] = $metaData['bytes'];
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$stat['atime'] = time();
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$stat['mtime'] = (isset($metaData['modified'])) ? strtotime($metaData['modified']) : time();
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return $stat;
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}
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return false;
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}
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public function filetype($path) {
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if ($path == '' || $path == '/') {
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return 'dir';
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} else {
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$metaData = $this->getDropBoxMetaData($path);
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if ($metaData) {
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if ($metaData['is_dir'] == 'true') {
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return 'dir';
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} else {
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return 'file';
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}
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}
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}
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return false;
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}
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public function file_exists($path) {
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if ($path == '' || $path == '/') {
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return true;
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}
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if ($this->getDropBoxMetaData($path)) {
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return true;
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}
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return false;
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}
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public function unlink($path) {
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try {
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$this->dropbox->delete($this->root.$path);
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$this->deleteMetaData($path);
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return true;
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function rename($path1, $path2) {
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try {
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// overwrite if target file exists and is not a directory
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$destMetaData = $this->getDropBoxMetaData($path2);
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if (isset($destMetaData) && $destMetaData !== false && !$destMetaData['is_dir']) {
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$this->unlink($path2);
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}
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$this->dropbox->move($this->root.$path1, $this->root.$path2);
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$this->deleteMetaData($path1);
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return true;
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function copy($path1, $path2) {
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$path1 = $this->root.$path1;
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$path2 = $this->root.$path2;
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try {
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$this->dropbox->copy($path1, $path2);
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return true;
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function fopen($path, $mode) {
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$path = $this->root.$path;
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switch ($mode) {
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case 'r':
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case 'rb':
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try {
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// slashes need to stay
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$encodedPath = str_replace('%2F', '/', rawurlencode(trim($path, '/')));
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$downloadUrl = 'https://api-content.dropbox.com/1/files/auto/' . $encodedPath;
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$headers = $this->oauth->getOAuthHeader($downloadUrl, [], 'GET');
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$client = \OC::$server->getHTTPClientService()->newClient();
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try {
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$response = $client->get($downloadUrl, [
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'headers' => $headers,
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'stream' => true,
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]);
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} catch (RequestException $e) {
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if (!is_null($e->getResponse())) {
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if ($e->getResponse()->getStatusCode() === 404) {
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return false;
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} else {
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throw $e;
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}
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} else {
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throw $e;
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}
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}
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$handle = $response->getBody();
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return RetryWrapper::wrap($handle);
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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if (strrpos($path, '.') !== false) {
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$ext = substr($path, strrpos($path, '.'));
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} else {
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$ext = '';
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}
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$tmpFile = \OCP\Files::tmpFile($ext);
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\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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if ($this->file_exists($path)) {
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$source = $this->fopen($path, 'r');
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file_put_contents($tmpFile, $source);
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}
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self::$tempFiles[$tmpFile] = $path;
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return fopen('close://'.$tmpFile, $mode);
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}
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return false;
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}
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public function writeBack($tmpFile) {
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if (isset(self::$tempFiles[$tmpFile])) {
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$handle = fopen($tmpFile, 'r');
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try {
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$this->dropbox->putFile(self::$tempFiles[$tmpFile], $handle);
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unlink($tmpFile);
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$this->deleteMetaData(self::$tempFiles[$tmpFile]);
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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}
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}
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}
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public function free_space($path) {
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try {
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$info = $this->dropbox->getAccountInfo();
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return $info['quota_info']['quota'] - $info['quota_info']['normal'];
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} catch (\Exception $exception) {
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\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function touch($path, $mtime = null) {
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if ($this->file_exists($path)) {
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return false;
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} else {
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$this->file_put_contents($path, '');
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}
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return true;
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}
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/**
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* check if curl is installed
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*/
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public static function checkDependencies() {
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return true;
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}
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}
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