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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program 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, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
- namespace OC\Files\Storage;
- use Icewind\Streams\CallbackWrapper;
- use Icewind\Streams\IteratorDirectory;
- use League\Flysystem\AdapterInterface;
- use League\Flysystem\FileNotFoundException;
- use League\Flysystem\Filesystem;
- use League\Flysystem\Plugin\GetWithMetadata;
- /**
- * Generic adapter between flysystem adapters and owncloud's storage system
- *
- * To use: subclass and call $this->buildFlysystem with the flysystem adapter of choice
- */
- abstract class Flysystem extends Common {
- /**
- * @var Filesystem
- */
- protected $flysystem;
- /**
- * @var string
- */
- protected $root = '';
- /**
- * Initialize the storage backend with a flyssytem adapter
- *
- * @param \League\Flysystem\AdapterInterface $adapter
- */
- protected function buildFlySystem(AdapterInterface $adapter) {
- $this->flysystem = new Filesystem($adapter);
- $this->flysystem->addPlugin(new GetWithMetadata());
- }
- protected function buildPath($path) {
- $fullPath = \OC\Files\Filesystem::normalizePath($this->root . '/' . $path);
- return ltrim($fullPath, '/');
- }
- /**
- * {@inheritdoc}
- */
- public function file_get_contents($path) {
- return $this->flysystem->read($this->buildPath($path));
- }
- /**
- * {@inheritdoc}
- */
- public function file_put_contents($path, $data) {
- return $this->flysystem->put($this->buildPath($path), $data);
- }
- /**
- * {@inheritdoc}
- */
- public function file_exists($path) {
- return $this->flysystem->has($this->buildPath($path));
- }
- /**
- * {@inheritdoc}
- */
- public function unlink($path) {
- if ($this->is_dir($path)) {
- return $this->rmdir($path);
- }
- try {
- return $this->flysystem->delete($this->buildPath($path));
- } catch (FileNotFoundException $e) {
- return false;
- }
- }
- /**
- * {@inheritdoc}
- */
- public function rename($source, $target) {
- if ($this->file_exists($target)) {
- $this->unlink($target);
- }
- return $this->flysystem->rename($this->buildPath($source), $this->buildPath($target));
- }
- /**
- * {@inheritdoc}
- */
- public function copy($source, $target) {
- if ($this->file_exists($target)) {
- $this->unlink($target);
- }
- return $this->flysystem->copy($this->buildPath($source), $this->buildPath($target));
- }
- /**
- * {@inheritdoc}
- */
- public function filesize($path) {
- if ($this->is_dir($path)) {
- return 0;
- } else {
- return $this->flysystem->getSize($this->buildPath($path));
- }
- }
- /**
- * {@inheritdoc}
- */
- public function mkdir($path) {
- if ($this->file_exists($path)) {
- return false;
- }
- return $this->flysystem->createDir($this->buildPath($path));
- }
- /**
- * {@inheritdoc}
- */
- public function filemtime($path) {
- return $this->flysystem->getTimestamp($this->buildPath($path));
- }
- /**
- * {@inheritdoc}
- */
- public function rmdir($path) {
- try {
- return @$this->flysystem->deleteDir($this->buildPath($path));
- } catch (FileNotFoundException $e) {
- return false;
- }
- }
- /**
- * {@inheritdoc}
- */
- public function opendir($path) {
- try {
- $content = $this->flysystem->listContents($this->buildPath($path));
- } catch (FileNotFoundException $e) {
- return false;
- }
- $names = array_map(function ($object) {
- return $object['basename'];
- }, $content);
- return IteratorDirectory::wrap($names);
- }
- /**
- * {@inheritdoc}
- */
- public function fopen($path, $mode) {
- $fullPath = $this->buildPath($path);
- $useExisting = true;
- switch ($mode) {
- case 'r':
- case 'rb':
- try {
- return $this->flysystem->readStream($fullPath);
- } catch (FileNotFoundException $e) {
- return false;
- }
- case 'w':
- case 'w+':
- case 'wb':
- case 'wb+':
- $useExisting = false;
- case 'a':
- case 'ab':
- case 'r+':
- case 'a+':
- case 'x':
- case 'x+':
- case 'c':
- case 'c+':
- //emulate these
- if ($useExisting and $this->file_exists($path)) {
- if (!$this->isUpdatable($path)) {
- return false;
- }
- $tmpFile = $this->getCachedFile($path);
- } else {
- if (!$this->isCreatable(dirname($path))) {
- return false;
- }
- $tmpFile = \OC::$server->getTempManager()->getTemporaryFile();
- }
- $source = fopen($tmpFile, $mode);
- return CallbackWrapper::wrap($source, null, null, function () use ($tmpFile, $fullPath) {
- $this->flysystem->putStream($fullPath, fopen($tmpFile, 'r'));
- unlink($tmpFile);
- });
- }
- return false;
- }
- /**
- * {@inheritdoc}
- */
- public function touch($path, $mtime = null) {
- if ($this->file_exists($path)) {
- return false;
- } else {
- $this->file_put_contents($path, '');
- return true;
- }
- }
- /**
- * {@inheritdoc}
- */
- public function stat($path) {
- $info = $this->flysystem->getWithMetadata($this->buildPath($path), ['timestamp', 'size']);
- return [
- 'mtime' => $info['timestamp'],
- 'size' => $info['size']
- ];
- }
- /**
- * {@inheritdoc}
- */
- public function filetype($path) {
- if ($path === '' or $path === '/' or $path === '.') {
- return 'dir';
- }
- try {
- $info = $this->flysystem->getMetadata($this->buildPath($path));
- } catch (FileNotFoundException $e) {
- return false;
- }
- return $info['type'];
- }
- }
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