455 lines
11 KiB
PHP
455 lines
11 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 Bernhard Posselt <dev@bernhard-posselt.com>
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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 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 OC\Files\Node;
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use OC\Files\Filesystem;
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use OC\Files\Mount\MoveableMount;
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use OCP\Files\FileInfo;
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use OCP\Files\InvalidPathException;
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use OCP\Files\NotFoundException;
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use OCP\Files\NotPermittedException;
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use Symfony\Component\EventDispatcher\GenericEvent;
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// FIXME: this class really should be abstract
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class Node implements \OCP\Files\Node {
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/**
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* @var \OC\Files\View $view
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*/
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protected $view;
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/**
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* @var \OC\Files\Node\Root $root
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*/
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protected $root;
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/**
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* @var string $path
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*/
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protected $path;
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/**
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* @var \OCP\Files\FileInfo
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*/
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protected $fileInfo;
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/**
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* @param \OC\Files\View $view
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* @param \OCP\Files\IRootFolder $root
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* @param string $path
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* @param FileInfo $fileInfo
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*/
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public function __construct($root, $view, $path, $fileInfo = null) {
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$this->view = $view;
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$this->root = $root;
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$this->path = $path;
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$this->fileInfo = $fileInfo;
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}
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/**
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* Creates a Node of the same type that represents a non-existing path
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*
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* @param string $path path
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* @return string non-existing node class
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*/
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protected function createNonExistingNode($path) {
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throw new \Exception('Must be implemented by subclasses');
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}
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/**
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* Returns the matching file info
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*
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* @return FileInfo
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getFileInfo() {
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if (!Filesystem::isValidPath($this->path)) {
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throw new InvalidPathException();
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}
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if (!$this->fileInfo) {
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$fileInfo = $this->view->getFileInfo($this->path);
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if ($fileInfo instanceof FileInfo) {
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$this->fileInfo = $fileInfo;
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} else {
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throw new NotFoundException();
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}
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}
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return $this->fileInfo;
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}
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/**
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* @param string[] $hooks
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*/
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protected function sendHooks($hooks, array $args = null) {
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$args = !empty($args) ? $args : [$this];
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$dispatcher = \OC::$server->getEventDispatcher();
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foreach ($hooks as $hook) {
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$this->root->emit('\OC\Files', $hook, $args);
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$dispatcher->dispatch('\OCP\Files::' . $hook, new GenericEvent($args));
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}
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}
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/**
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* @param int $permissions
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* @return bool
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*/
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protected function checkPermissions($permissions) {
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return ($this->getPermissions() & $permissions) === $permissions;
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}
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public function delete() {
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}
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/**
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* @param int $mtime
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* @throws \OCP\Files\NotPermittedException
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*/
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public function touch($mtime = null) {
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if ($this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE)) {
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$this->sendHooks(array('preTouch'));
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$this->view->touch($this->path, $mtime);
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$this->sendHooks(array('postTouch'));
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if ($this->fileInfo) {
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if (is_null($mtime)) {
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$mtime = time();
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}
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$this->fileInfo['mtime'] = $mtime;
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}
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} else {
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throw new NotPermittedException();
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}
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}
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/**
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* @return \OC\Files\Storage\Storage
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* @throws \OCP\Files\NotFoundException
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*/
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public function getStorage() {
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list($storage,) = $this->view->resolvePath($this->path);
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return $storage;
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}
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/**
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* @return string
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*/
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public function getPath() {
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return $this->path;
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}
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/**
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* @return string
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*/
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public function getInternalPath() {
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list(, $internalPath) = $this->view->resolvePath($this->path);
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return $internalPath;
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}
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/**
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* @return int
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getId() {
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return $this->getFileInfo()->getId();
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}
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/**
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* @return array
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*/
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public function stat() {
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return $this->view->stat($this->path);
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}
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/**
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* @return int
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getMTime() {
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return $this->getFileInfo()->getMTime();
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}
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/**
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* @param bool $includeMounts
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* @return int
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getSize($includeMounts = true) {
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return $this->getFileInfo()->getSize($includeMounts);
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}
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/**
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* @return string
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getEtag() {
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return $this->getFileInfo()->getEtag();
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}
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/**
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* @return int
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function getPermissions() {
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return $this->getFileInfo()->getPermissions();
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}
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/**
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* @return bool
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function isReadable() {
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return $this->getFileInfo()->isReadable();
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}
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/**
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* @return bool
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function isUpdateable() {
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return $this->getFileInfo()->isUpdateable();
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}
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/**
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* @return bool
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function isDeletable() {
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return $this->getFileInfo()->isDeletable();
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}
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/**
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* @return bool
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function isShareable() {
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return $this->getFileInfo()->isShareable();
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}
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/**
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* @return bool
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* @throws InvalidPathException
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* @throws NotFoundException
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*/
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public function isCreatable() {
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return $this->getFileInfo()->isCreatable();
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}
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/**
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* @return Node
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*/
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public function getParent() {
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$newPath = dirname($this->path);
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if ($newPath === '' || $newPath === '.' || $newPath === '/') {
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return $this->root;
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}
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return $this->root->get($newPath);
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}
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/**
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* @return string
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*/
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public function getName() {
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return basename($this->path);
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}
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/**
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* @param string $path
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* @return string
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*/
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protected function normalizePath($path) {
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if ($path === '' or $path === '/') {
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return '/';
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}
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//no windows style slashes
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$path = str_replace('\\', '/', $path);
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//add leading slash
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if ($path[0] !== '/') {
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$path = '/' . $path;
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}
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//remove duplicate slashes
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while (strpos($path, '//') !== false) {
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$path = str_replace('//', '/', $path);
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}
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//remove trailing slash
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$path = rtrim($path, '/');
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return $path;
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}
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/**
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* check if the requested path is valid
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*
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* @param string $path
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* @return bool
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*/
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public function isValidPath($path) {
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if (!$path || $path[0] !== '/') {
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$path = '/' . $path;
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}
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if (strstr($path, '/../') || strrchr($path, '/') === '/..') {
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return false;
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}
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return true;
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}
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public function isMounted() {
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return $this->getFileInfo()->isMounted();
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}
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public function isShared() {
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return $this->getFileInfo()->isShared();
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}
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public function getMimeType() {
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return $this->getFileInfo()->getMimetype();
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}
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public function getMimePart() {
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return $this->getFileInfo()->getMimePart();
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}
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public function getType() {
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return $this->getFileInfo()->getType();
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}
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public function isEncrypted() {
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return $this->getFileInfo()->isEncrypted();
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}
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public function getMountPoint() {
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return $this->getFileInfo()->getMountPoint();
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}
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public function getOwner() {
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return $this->getFileInfo()->getOwner();
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}
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public function getChecksum() {
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}
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public function getExtension(): string {
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return $this->getFileInfo()->getExtension();
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}
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/**
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* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
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* @throws \OCP\Lock\LockedException
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*/
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public function lock($type) {
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$this->view->lockFile($this->path, $type);
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}
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/**
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* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
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* @throws \OCP\Lock\LockedException
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*/
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public function changeLock($type) {
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$this->view->changeLock($this->path, $type);
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}
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/**
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* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
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* @throws \OCP\Lock\LockedException
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*/
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public function unlock($type) {
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$this->view->unlockFile($this->path, $type);
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}
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/**
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* @param string $targetPath
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* @throws \OCP\Files\NotPermittedException if copy not allowed or failed
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* @return \OC\Files\Node\Node
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*/
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public function copy($targetPath) {
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$targetPath = $this->normalizePath($targetPath);
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$parent = $this->root->get(dirname($targetPath));
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if ($parent instanceof Folder and $this->isValidPath($targetPath) and $parent->isCreatable()) {
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$nonExisting = $this->createNonExistingNode($targetPath);
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$this->sendHooks(['preCopy'], [$this, $nonExisting]);
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$this->sendHooks(['preWrite'], [$nonExisting]);
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if (!$this->view->copy($this->path, $targetPath)) {
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throw new NotPermittedException('Could not copy ' . $this->path . ' to ' . $targetPath);
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}
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$targetNode = $this->root->get($targetPath);
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$this->sendHooks(['postCopy'], [$this, $targetNode]);
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$this->sendHooks(['postWrite'], [$targetNode]);
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return $targetNode;
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} else {
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throw new NotPermittedException('No permission to copy to path ' . $targetPath);
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}
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}
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/**
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* @param string $targetPath
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* @throws \OCP\Files\NotPermittedException if move not allowed or failed
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* @return \OC\Files\Node\Node
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*/
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public function move($targetPath) {
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$targetPath = $this->normalizePath($targetPath);
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$parent = $this->root->get(dirname($targetPath));
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if (
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$parent instanceof Folder and
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$this->isValidPath($targetPath) and
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(
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$parent->isCreatable() ||
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($parent->getInternalPath() === '' && $parent->getMountPoint() instanceof MoveableMount)
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)
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) {
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$nonExisting = $this->createNonExistingNode($targetPath);
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$this->sendHooks(['preRename'], [$this, $nonExisting]);
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$this->sendHooks(['preWrite'], [$nonExisting]);
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if (!$this->view->rename($this->path, $targetPath)) {
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throw new NotPermittedException('Could not move ' . $this->path . ' to ' . $targetPath);
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}
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$targetNode = $this->root->get($targetPath);
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$this->sendHooks(['postRename'], [$this, $targetNode]);
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$this->sendHooks(['postWrite'], [$targetNode]);
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$this->path = $targetPath;
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return $targetNode;
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} else {
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throw new NotPermittedException('No permission to move to path ' . $targetPath);
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}
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}
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public function getCreationTime(): int {
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return $this->getFileInfo()->getCreationTime();
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}
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public function getUploadTime(): int {
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return $this->getFileInfo()->getUploadTime();
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}
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}
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