455 lines
14 KiB
PHP
455 lines
14 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 Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author Jakob Sack <mail@jakobsack.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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\DAV\Connector\Sabre;
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use OC\Files\Mount\MoveableMount;
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use OC\Files\View;
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use OCA\DAV\Connector\Sabre\Exception\FileLocked;
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use OCA\DAV\Connector\Sabre\Exception\Forbidden;
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use OCA\DAV\Connector\Sabre\Exception\InvalidPath;
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use OCP\Files\FileInfo;
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use OCP\Files\ForbiddenException;
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use OCP\Files\InvalidPathException;
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use OCP\Files\StorageNotAvailableException;
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use OCP\Lock\ILockingProvider;
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use OCP\Lock\LockedException;
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use Sabre\DAV\Exception\BadRequest;
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use Sabre\DAV\Exception\Locked;
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use Sabre\DAV\Exception\NotFound;
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use Sabre\DAV\Exception\ServiceUnavailable;
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use Sabre\DAV\IFile;
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use Sabre\DAV\INode;
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class Directory extends \OCA\DAV\Connector\Sabre\Node
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implements \Sabre\DAV\ICollection, \Sabre\DAV\IQuota, \Sabre\DAV\IMoveTarget {
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/**
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* Cached directory content
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*
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* @var \OCP\Files\FileInfo[]
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*/
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private $dirContent;
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/**
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* Cached quota info
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*
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* @var array
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*/
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private $quotaInfo;
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/**
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* @var ObjectTree|null
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*/
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private $tree;
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/**
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* Sets up the node, expects a full path name
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*
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* @param \OC\Files\View $view
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* @param \OCP\Files\FileInfo $info
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* @param ObjectTree|null $tree
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* @param \OCP\Share\IManager $shareManager
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*/
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public function __construct(View $view, FileInfo $info, $tree = null, $shareManager = null) {
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parent::__construct($view, $info, $shareManager);
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$this->tree = $tree;
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}
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/**
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* Creates a new file in the directory
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*
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* Data will either be supplied as a stream resource, or in certain cases
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* as a string. Keep in mind that you may have to support either.
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*
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* After successful creation of the file, you may choose to return the ETag
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* of the new file here.
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*
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* The returned ETag must be surrounded by double-quotes (The quotes should
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* be part of the actual string).
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*
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* If you cannot accurately determine the ETag, you should not return it.
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* If you don't store the file exactly as-is (you're transforming it
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* somehow) you should also not return an ETag.
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*
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* This means that if a subsequent GET to this new file does not exactly
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* return the same contents of what was submitted here, you are strongly
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* recommended to omit the ETag.
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*
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* @param string $name Name of the file
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* @param resource|string $data Initial payload
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* @return null|string
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* @throws Exception\EntityTooLarge
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* @throws Exception\UnsupportedMediaType
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* @throws FileLocked
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* @throws InvalidPath
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* @throws \Sabre\DAV\Exception
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* @throws \Sabre\DAV\Exception\BadRequest
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* @throws \Sabre\DAV\Exception\Forbidden
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* @throws \Sabre\DAV\Exception\ServiceUnavailable
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*/
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public function createFile($name, $data = null) {
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try {
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// for chunked upload also updating a existing file is a "createFile"
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// because we create all the chunks before re-assemble them to the existing file.
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if (isset($_SERVER['HTTP_OC_CHUNKED'])) {
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// exit if we can't create a new file and we don't updatable existing file
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$chunkInfo = \OC_FileChunking::decodeName($name);
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if (!$this->fileView->isCreatable($this->path) &&
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!$this->fileView->isUpdatable($this->path . '/' . $chunkInfo['name'])
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) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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} else {
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// For non-chunked upload it is enough to check if we can create a new file
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if (!$this->fileView->isCreatable($this->path)) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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}
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$this->fileView->verifyPath($this->path, $name);
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$path = $this->fileView->getAbsolutePath($this->path) . '/' . $name;
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// in case the file already exists/overwriting
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$info = $this->fileView->getFileInfo($this->path . '/' . $name);
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if (!$info) {
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// use a dummy FileInfo which is acceptable here since it will be refreshed after the put is complete
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$info = new \OC\Files\FileInfo($path, null, null, [], null);
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}
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$node = new \OCA\DAV\Connector\Sabre\File($this->fileView, $info);
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// only allow 1 process to upload a file at once but still allow reading the file while writing the part file
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$node->acquireLock(ILockingProvider::LOCK_SHARED);
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$this->fileView->lockFile($path . '.upload.part', ILockingProvider::LOCK_EXCLUSIVE);
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$result = $node->put($data);
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$this->fileView->unlockFile($path . '.upload.part', ILockingProvider::LOCK_EXCLUSIVE);
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$node->releaseLock(ILockingProvider::LOCK_SHARED);
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return $result;
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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throw new \Sabre\DAV\Exception\ServiceUnavailable($e->getMessage(), $e->getCode(), $e);
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} catch (InvalidPathException $ex) {
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throw new InvalidPath($ex->getMessage(), false, $ex);
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} catch (ForbiddenException $ex) {
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throw new Forbidden($ex->getMessage(), $ex->getRetry(), $ex);
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} catch (LockedException $e) {
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throw new FileLocked($e->getMessage(), $e->getCode(), $e);
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}
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}
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/**
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* Creates a new subdirectory
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*
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* @param string $name
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* @throws FileLocked
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* @throws InvalidPath
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* @throws \Sabre\DAV\Exception\Forbidden
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* @throws \Sabre\DAV\Exception\ServiceUnavailable
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*/
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public function createDirectory($name) {
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try {
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if (!$this->info->isCreatable()) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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$this->fileView->verifyPath($this->path, $name);
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$newPath = $this->path . '/' . $name;
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if (!$this->fileView->mkdir($newPath)) {
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throw new \Sabre\DAV\Exception\Forbidden('Could not create directory ' . $newPath);
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}
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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throw new \Sabre\DAV\Exception\ServiceUnavailable($e->getMessage());
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} catch (InvalidPathException $ex) {
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throw new InvalidPath($ex->getMessage());
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} catch (ForbiddenException $ex) {
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throw new Forbidden($ex->getMessage(), $ex->getRetry());
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} catch (LockedException $e) {
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throw new FileLocked($e->getMessage(), $e->getCode(), $e);
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}
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}
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/**
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* Returns a specific child node, referenced by its name
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*
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* @param string $name
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* @param \OCP\Files\FileInfo $info
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* @return \Sabre\DAV\INode
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* @throws InvalidPath
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* @throws \Sabre\DAV\Exception\NotFound
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* @throws \Sabre\DAV\Exception\ServiceUnavailable
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*/
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public function getChild($name, $info = null) {
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if (!$this->info->isReadable()) {
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// avoid detecting files through this way
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throw new NotFound();
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}
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$path = $this->path . '/' . $name;
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if (is_null($info)) {
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try {
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$this->fileView->verifyPath($this->path, $name);
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$info = $this->fileView->getFileInfo($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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throw new \Sabre\DAV\Exception\ServiceUnavailable($e->getMessage());
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} catch (InvalidPathException $ex) {
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throw new InvalidPath($ex->getMessage());
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} catch (ForbiddenException $e) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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}
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if (!$info) {
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throw new \Sabre\DAV\Exception\NotFound('File with name ' . $path . ' could not be located');
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}
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if ($info['mimetype'] === 'httpd/unix-directory') {
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$node = new \OCA\DAV\Connector\Sabre\Directory($this->fileView, $info, $this->tree, $this->shareManager);
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} else {
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$node = new \OCA\DAV\Connector\Sabre\File($this->fileView, $info, $this->shareManager);
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}
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if ($this->tree) {
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$this->tree->cacheNode($node);
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}
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return $node;
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}
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/**
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* Returns an array with all the child nodes
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*
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* @return \Sabre\DAV\INode[]
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* @throws \Sabre\DAV\Exception\Locked
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* @throws \OCA\DAV\Connector\Sabre\Exception\Forbidden
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*/
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public function getChildren() {
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if (!is_null($this->dirContent)) {
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return $this->dirContent;
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}
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try {
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if (!$this->info->isReadable()) {
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// return 403 instead of 404 because a 404 would make
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// the caller believe that the collection itself does not exist
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throw new Forbidden('No read permissions');
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}
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$folderContent = $this->fileView->getDirectoryContent($this->path);
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} catch (LockedException $e) {
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throw new Locked();
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}
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$nodes = array();
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foreach ($folderContent as $info) {
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$node = $this->getChild($info->getName(), $info);
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$nodes[] = $node;
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}
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$this->dirContent = $nodes;
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return $this->dirContent;
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}
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/**
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* Checks if a child exists.
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*
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* @param string $name
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* @return bool
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*/
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public function childExists($name) {
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// note: here we do NOT resolve the chunk file name to the real file name
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// to make sure we return false when checking for file existence with a chunk
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// file name.
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// This is to make sure that "createFile" is still triggered
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// (required old code) instead of "updateFile".
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//
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// TODO: resolve chunk file name here and implement "updateFile"
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$path = $this->path . '/' . $name;
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return $this->fileView->file_exists($path);
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}
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/**
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* Deletes all files in this directory, and then itself
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*
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* @return void
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* @throws FileLocked
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* @throws \Sabre\DAV\Exception\Forbidden
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*/
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public function delete() {
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if ($this->path === '' || $this->path === '/' || !$this->info->isDeletable()) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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try {
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if (!$this->fileView->rmdir($this->path)) {
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// assume it wasn't possible to remove due to permission issue
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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} catch (ForbiddenException $ex) {
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throw new Forbidden($ex->getMessage(), $ex->getRetry());
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} catch (LockedException $e) {
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throw new FileLocked($e->getMessage(), $e->getCode(), $e);
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}
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}
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/**
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* Returns available diskspace information
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*
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* @return array
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*/
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public function getQuotaInfo() {
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if ($this->quotaInfo) {
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return $this->quotaInfo;
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}
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try {
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$storageInfo = \OC_Helper::getStorageInfo($this->info->getPath(), $this->info);
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if ($storageInfo['quota'] === \OCP\Files\FileInfo::SPACE_UNLIMITED) {
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$free = \OCP\Files\FileInfo::SPACE_UNLIMITED;
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} else {
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$free = $storageInfo['free'];
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}
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$this->quotaInfo = array(
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$storageInfo['used'],
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$free
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);
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return $this->quotaInfo;
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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return array(0, 0);
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}
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}
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/**
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* Moves a node into this collection.
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*
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* It is up to the implementors to:
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* 1. Create the new resource.
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* 2. Remove the old resource.
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* 3. Transfer any properties or other data.
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*
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* Generally you should make very sure that your collection can easily move
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* the move.
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*
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* If you don't, just return false, which will trigger sabre/dav to handle
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* the move itself. If you return true from this function, the assumption
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* is that the move was successful.
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*
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* @param string $targetName New local file/collection name.
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* @param string $fullSourcePath Full path to source node
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* @param INode $sourceNode Source node itself
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* @return bool
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* @throws BadRequest
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* @throws ServiceUnavailable
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* @throws Forbidden
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* @throws FileLocked
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* @throws \Sabre\DAV\Exception\Forbidden
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*/
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public function moveInto($targetName, $fullSourcePath, INode $sourceNode) {
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if (!$sourceNode instanceof Node) {
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// it's a file of another kind, like FutureFile
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if ($sourceNode instanceof IFile) {
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// fallback to default copy+delete handling
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return false;
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}
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throw new BadRequest('Incompatible node types');
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}
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if (!$this->fileView) {
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throw new ServiceUnavailable('filesystem not setup');
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}
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$destinationPath = $this->getPath() . '/' . $targetName;
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$targetNodeExists = $this->childExists($targetName);
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// at getNodeForPath we also check the path for isForbiddenFileOrDir
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// with that we have covered both source and destination
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if ($sourceNode instanceof Directory && $targetNodeExists) {
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throw new \Sabre\DAV\Exception\Forbidden('Could not copy directory ' . $sourceNode->getName() . ', target exists');
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}
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list($sourceDir,) = \Sabre\Uri\split($sourceNode->getPath());
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$destinationDir = $this->getPath();
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$sourcePath = $sourceNode->getPath();
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$isMovableMount = false;
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$sourceMount = \OC::$server->getMountManager()->find($this->fileView->getAbsolutePath($sourcePath));
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$internalPath = $sourceMount->getInternalPath($this->fileView->getAbsolutePath($sourcePath));
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if ($sourceMount instanceof MoveableMount && $internalPath === '') {
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$isMovableMount = true;
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}
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try {
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$sameFolder = ($sourceDir === $destinationDir);
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// if we're overwriting or same folder
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if ($targetNodeExists || $sameFolder) {
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// note that renaming a share mount point is always allowed
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if (!$this->fileView->isUpdatable($destinationDir) && !$isMovableMount) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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} else {
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if (!$this->fileView->isCreatable($destinationDir)) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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}
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if (!$sameFolder) {
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// moving to a different folder, source will be gone, like a deletion
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// note that moving a share mount point is always allowed
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if (!$this->fileView->isDeletable($sourcePath) && !$isMovableMount) {
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throw new \Sabre\DAV\Exception\Forbidden();
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}
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}
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$fileName = basename($destinationPath);
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try {
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$this->fileView->verifyPath($destinationDir, $fileName);
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} catch (InvalidPathException $ex) {
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throw new InvalidPath($ex->getMessage());
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}
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$renameOkay = $this->fileView->rename($sourcePath, $destinationPath);
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if (!$renameOkay) {
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throw new \Sabre\DAV\Exception\Forbidden('');
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}
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} catch (StorageNotAvailableException $e) {
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throw new ServiceUnavailable($e->getMessage());
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} catch (ForbiddenException $ex) {
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throw new Forbidden($ex->getMessage(), $ex->getRetry());
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} catch (LockedException $e) {
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throw new FileLocked($e->getMessage(), $e->getCode(), $e);
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}
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return true;
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}
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}
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