728 lines
20 KiB
PHP
728 lines
20 KiB
PHP
<?php
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/**
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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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 Robin Appelman <icewind@owncloud.com>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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* @author scambra <sergio@entrecables.com>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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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\Storage;
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use OC\Files\Filesystem;
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use OCA\Files_Sharing\ISharedStorage;
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use OCP\Constants;
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use OCP\Files\Cache\ICacheEntry;
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use OCP\Files\Storage\IStorage;
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use OCP\Lock\ILockingProvider;
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/**
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* Convert target path to source path and pass the function call to the correct storage provider
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*/
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class Shared extends \OC\Files\Storage\Common implements ISharedStorage {
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private $share; // the shared resource
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private $files = array();
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/**
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* @var \OC\Files\View
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*/
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private $ownerView;
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/**
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* @var string
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*/
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private $user;
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private $initialized = false;
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/**
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* @var ICacheEntry
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*/
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private $sourceRootInfo;
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/**
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* @var IStorage
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*/
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private $sourceStorage;
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public function __construct($arguments) {
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$this->share = $arguments['share'];
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$this->ownerView = $arguments['ownerView'];
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$this->user = $arguments['user'];
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}
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private function init() {
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if ($this->initialized) {
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return;
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}
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$this->initialized = true;
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Filesystem::initMountPoints($this->share['uid_owner']);
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$sourcePath = $this->ownerView->getPath($this->share['file_source']);
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list($this->sourceStorage, $sourceInternalPath) = $this->ownerView->resolvePath($sourcePath);
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$this->sourceRootInfo = $this->sourceStorage->getCache()->get($sourceInternalPath);
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}
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private function isValid() {
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return ($this->sourceRootInfo->getPermissions() & Constants::PERMISSION_SHARE) === Constants::PERMISSION_SHARE;
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}
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/**
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* get id of the mount point
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*
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* @return string
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*/
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public function getId() {
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return 'shared::' . $this->getMountPoint();
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}
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/**
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* get file cache of the shared item source
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*
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* @return int
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*/
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public function getSourceId() {
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return (int)$this->share['file_source'];
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}
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/**
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* Get the source file path, permissions, and owner for a shared file
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*
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* @param string $target Shared target file path
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* @return array Returns array with the keys path, permissions, and owner or false if not found
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*/
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public function getFile($target) {
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$this->init();
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if (!isset($this->files[$target])) {
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// Check for partial files
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if (pathinfo($target, PATHINFO_EXTENSION) === 'part') {
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$source = \OC_Share_Backend_File::getSource(substr($target, 0, -5), $this->getShare());
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if ($source) {
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$source['path'] .= '.part';
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// All partial files have delete permission
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$source['permissions'] |= \OCP\Constants::PERMISSION_DELETE;
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}
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} else {
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$source = \OC_Share_Backend_File::getSource($target, $this->getShare());
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}
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$this->files[$target] = $source;
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}
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return $this->files[$target];
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}
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/**
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* Get the source file path for a shared file
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*
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* @param string $target Shared target file path
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* @return string|false source file path or false if not found
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*/
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public function getSourcePath($target) {
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if (!$this->isValid()){
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return false;
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}
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$source = $this->getFile($target);
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if ($source) {
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if (!isset($source['fullPath'])) {
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\OC\Files\Filesystem::initMountPoints($source['fileOwner']);
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$mount = \OC\Files\Filesystem::getMountByNumericId($source['storage']);
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if (is_array($mount) && !empty($mount)) {
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$this->files[$target]['fullPath'] = $mount[key($mount)]->getMountPoint() . $source['path'];
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} else {
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$this->files[$target]['fullPath'] = false;
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\OCP\Util::writeLog('files_sharing', "Unable to get mount for shared storage '" . $source['storage'] . "' user '" . $source['fileOwner'] . "'", \OCP\Util::ERROR);
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}
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}
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return $this->files[$target]['fullPath'];
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}
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return false;
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}
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/**
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* Get the permissions granted for a shared file
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*
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* @param string $target Shared target file path
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* @return int CRUDS permissions granted
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*/
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public function getPermissions($target = '') {
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if (!$this->isValid()) {
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return 0;
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}
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$permissions = $this->share['permissions'];
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// part files and the mount point always have delete permissions
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if ($target === '' || pathinfo($target, PATHINFO_EXTENSION) === 'part') {
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$permissions |= \OCP\Constants::PERMISSION_DELETE;
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}
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if (\OCP\Util::isSharingDisabledForUser()) {
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$permissions &= ~\OCP\Constants::PERMISSION_SHARE;
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}
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return $permissions;
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}
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public function mkdir($path) {
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if ($path == '' || $path == '/' || !$this->isCreatable(dirname($path))) {
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return false;
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} else if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->mkdir($internalPath);
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}
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return false;
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}
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/**
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* Delete the directory if DELETE permission is granted
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*
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* @param string $path
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* @return boolean
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*/
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public function rmdir($path) {
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// never delete a share mount point
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if (empty($path)) {
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return false;
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}
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if (($source = $this->getSourcePath($path)) && $this->isDeletable($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->rmdir($internalPath);
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}
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return false;
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}
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public function opendir($path) {
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$source = $this->getSourcePath($path);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->opendir($internalPath);
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}
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public function is_dir($path) {
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$source = $this->getSourcePath($path);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->is_dir($internalPath);
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}
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public function is_file($path) {
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if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->is_file($internalPath);
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}
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return false;
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}
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public function stat($path) {
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if ($path == '' || $path == '/') {
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$stat['size'] = $this->filesize($path);
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$stat['mtime'] = $this->filemtime($path);
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return $stat;
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} else if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->stat($internalPath);
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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 == '' || $path == '/') {
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return 'dir';
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} else if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->filetype($internalPath);
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}
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return false;
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}
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public function filesize($path) {
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$source = $this->getSourcePath($path);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->filesize($internalPath);
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}
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public function isCreatable($path) {
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return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_CREATE);
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}
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public function isReadable($path) {
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if (!$this->isValid()) {
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return false;
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}
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if (!$this->file_exists($path)) {
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return false;
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}
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list($storage, $internalPath) = $this->resolvePath($path);
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return $storage->isReadable($internalPath);
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}
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public function isUpdatable($path) {
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return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_UPDATE);
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}
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public function isDeletable($path) {
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return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_DELETE);
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}
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public function isSharable($path) {
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if (\OCP\Util::isSharingDisabledForUser() || !\OC\Share\Share::isResharingAllowed()) {
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return false;
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}
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return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_SHARE);
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}
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public function file_exists($path) {
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if ($path == '' || $path == '/') {
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return true;
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} else if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->file_exists($internalPath);
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}
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return false;
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}
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public function filemtime($path) {
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$source = $this->getSourcePath($path);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->filemtime($internalPath);
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}
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public function file_get_contents($path) {
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$source = $this->getSourcePath($path);
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if ($source) {
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$info = array(
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'target' => $this->getMountPoint() . $path,
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'source' => $source,
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);
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\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_get_contents', $info);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->file_get_contents($internalPath);
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}
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}
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public function file_put_contents($path, $data) {
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if ($source = $this->getSourcePath($path)) {
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// Check if permission is granted
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if (($this->file_exists($path) && !$this->isUpdatable($path))
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|| ($this->is_dir($path) && !$this->isCreatable($path))
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) {
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return false;
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}
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$info = array(
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'target' => $this->getMountPoint() . '/' . $path,
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'source' => $source,
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);
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\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_put_contents', $info);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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$result = $storage->file_put_contents($internalPath, $data);
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return $result;
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}
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return false;
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}
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/**
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* Delete the file if DELETE permission is granted
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*
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* @param string $path
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* @return boolean
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*/
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public function unlink($path) {
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// never delete a share mount point
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if (empty($path)) {
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return false;
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}
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if ($source = $this->getSourcePath($path)) {
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if ($this->isDeletable($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->unlink($internalPath);
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}
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}
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return false;
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}
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public function rename($path1, $path2) {
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$this->init();
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// we need the paths relative to data/user/files
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$relPath1 = $this->getMountPoint() . '/' . $path1;
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$relPath2 = $this->getMountPoint() . '/' . $path2;
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$pathinfo = pathinfo($relPath1);
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$isPartFile = (isset($pathinfo['extension']) && $pathinfo['extension'] === 'part');
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$targetExists = $this->file_exists($path2);
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$sameFolder = (dirname($relPath1) === dirname($relPath2));
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if ($targetExists || ($sameFolder && !$isPartFile)) {
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// note that renaming a share mount point is always allowed
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if (!$this->isUpdatable('')) {
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return false;
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}
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} else {
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if (!$this->isCreatable('')) {
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return false;
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}
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}
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/**
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* @var \OC\Files\Storage\Storage $sourceStorage
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*/
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list($sourceStorage, $sourceInternalPath) = $this->resolvePath($path1);
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/**
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* @var \OC\Files\Storage\Storage $targetStorage
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*/
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list($targetStorage, $targetInternalPath) = $this->resolvePath($path2);
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return $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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}
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public function copy($path1, $path2) {
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// Copy the file if CREATE permission is granted
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if ($this->isCreatable(dirname($path2))) {
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/**
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* @var \OC\Files\Storage\Storage $sourceStorage
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*/
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list($sourceStorage, $sourceInternalPath) = $this->resolvePath($path1);
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/**
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* @var \OC\Files\Storage\Storage $targetStorage
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*/
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list($targetStorage, $targetInternalPath) = $this->resolvePath($path2);
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return $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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}
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return false;
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}
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public function fopen($path, $mode) {
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if ($source = $this->getSourcePath($path)) {
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switch ($mode) {
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case 'r+':
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case 'rb+':
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case 'w+':
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case 'wb+':
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case 'x+':
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case 'xb+':
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case 'a+':
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case 'ab+':
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case 'w':
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case 'wb':
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case 'x':
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case 'xb':
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case 'a':
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case 'ab':
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$creatable = $this->isCreatable($path);
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$updatable = $this->isUpdatable($path);
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// if neither permissions given, no need to continue
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if (!$creatable && !$updatable) {
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return false;
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}
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$exists = $this->file_exists($path);
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// if a file exists, updatable permissions are required
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if ($exists && !$updatable) {
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return false;
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}
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// part file is allowed if !$creatable but the final file is $updatable
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if (pathinfo($path, PATHINFO_EXTENSION) !== 'part') {
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if (!$exists && !$creatable) {
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return false;
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}
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}
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}
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$info = array(
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'target' => $this->getMountPoint() . $path,
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'source' => $source,
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'mode' => $mode,
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);
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\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'fopen', $info);
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->fopen($internalPath, $mode);
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}
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return false;
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}
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public function getMimeType($path) {
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if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->getMimeType($internalPath);
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}
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return false;
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}
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public function free_space($path) {
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$source = $this->getSourcePath($path);
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if ($source) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->free_space($internalPath);
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}
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return \OCP\Files\FileInfo::SPACE_UNKNOWN;
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}
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public function getLocalFile($path) {
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if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->getLocalFile($internalPath);
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}
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return false;
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}
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public function touch($path, $mtime = null) {
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if ($source = $this->getSourcePath($path)) {
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
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return $storage->touch($internalPath, $mtime);
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}
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return false;
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}
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/**
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* return mount point of share, relative to data/user/files
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*
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* @return string
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*/
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public function getMountPoint() {
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return $this->share['file_target'];
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}
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public function setMountPoint($path) {
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$this->share['file_target'] = $path;
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}
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public function getShareType() {
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return $this->share['share_type'];
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}
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/**
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* does the group share already has a user specific unique name
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*
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* @return bool
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*/
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public function uniqueNameSet() {
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return (isset($this->share['unique_name']) && $this->share['unique_name']);
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}
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/**
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* the share now uses a unique name of this user
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*
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* @brief the share now uses a unique name of this user
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*/
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public function setUniqueName() {
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$this->share['unique_name'] = true;
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}
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/**
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* get share ID
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*
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* @return integer unique share ID
|
|
*/
|
|
public function getShareId() {
|
|
return $this->share['id'];
|
|
}
|
|
|
|
/**
|
|
* get the user who shared the file
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getSharedFrom() {
|
|
return $this->share['uid_owner'];
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function getShare() {
|
|
return $this->share;
|
|
}
|
|
|
|
/**
|
|
* return share type, can be "file" or "folder"
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getItemType() {
|
|
return $this->share['item_type'];
|
|
}
|
|
|
|
public function hasUpdated($path, $time) {
|
|
return $this->filemtime($path) > $time;
|
|
}
|
|
|
|
public function getCache($path = '', $storage = null) {
|
|
if (!$storage) {
|
|
$storage = $this;
|
|
}
|
|
return new \OC\Files\Cache\Shared_Cache($storage, $this->sourceStorage, $this->sourceRootInfo);
|
|
}
|
|
|
|
public function getScanner($path = '', $storage = null) {
|
|
if (!$storage) {
|
|
$storage = $this;
|
|
}
|
|
return new \OC\Files\Cache\SharedScanner($storage);
|
|
}
|
|
|
|
public function getPropagator($storage = null) {
|
|
if (!$storage) {
|
|
$storage = $this;
|
|
}
|
|
return new \OCA\Files_Sharing\SharedPropagator($storage);
|
|
}
|
|
|
|
public function getOwner($path) {
|
|
if ($path == '') {
|
|
$path = $this->getMountPoint();
|
|
}
|
|
$source = $this->getFile($path);
|
|
if ($source) {
|
|
return $source['fileOwner'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function getETag($path) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->getETag($internalPath);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* unshare complete storage, also the grouped shares
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function unshareStorage() {
|
|
$result = true;
|
|
if (!empty($this->share['grouped'])) {
|
|
foreach ($this->share['grouped'] as $share) {
|
|
$result = $result && \OCP\Share::unshareFromSelf($share['item_type'], $share['file_target']);
|
|
}
|
|
}
|
|
$result = $result && \OCP\Share::unshareFromSelf($this->getItemType(), $this->getMountPoint());
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Resolve the path for the source of the share
|
|
*
|
|
* @param string $path
|
|
* @return array
|
|
*/
|
|
public function resolvePath($path) {
|
|
$source = $this->getSourcePath($path);
|
|
return \OC\Files\Filesystem::resolvePath($source);
|
|
}
|
|
|
|
/**
|
|
* @param \OCP\Files\Storage $sourceStorage
|
|
* @param string $sourceInternalPath
|
|
* @param string $targetInternalPath
|
|
* @return bool
|
|
*/
|
|
public function copyFromStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
|
|
/** @var \OCP\Files\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $this->resolvePath($targetInternalPath);
|
|
return $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
|
|
}
|
|
|
|
/**
|
|
* @param \OCP\Files\Storage $sourceStorage
|
|
* @param string $sourceInternalPath
|
|
* @param string $targetInternalPath
|
|
* @return bool
|
|
*/
|
|
public function moveFromStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
|
|
/** @var \OCP\Files\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $this->resolvePath($targetInternalPath);
|
|
return $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
|
|
* @param \OCP\Lock\ILockingProvider $provider
|
|
* @throws \OCP\Lock\LockedException
|
|
*/
|
|
public function acquireLock($path, $type, ILockingProvider $provider) {
|
|
/** @var \OCP\Files\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $this->resolvePath($path);
|
|
$targetStorage->acquireLock($targetInternalPath, $type, $provider);
|
|
// lock the parent folders of the owner when locking the share as recipient
|
|
if ($path === '') {
|
|
$sourcePath = $this->ownerView->getPath($this->share['file_source']);
|
|
$this->ownerView->lockFile(dirname($sourcePath), ILockingProvider::LOCK_SHARED, true);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
|
|
* @param \OCP\Lock\ILockingProvider $provider
|
|
*/
|
|
public function releaseLock($path, $type, ILockingProvider $provider) {
|
|
/** @var \OCP\Files\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $this->resolvePath($path);
|
|
$targetStorage->releaseLock($targetInternalPath, $type, $provider);
|
|
// unlock the parent folders of the owner when unlocking the share as recipient
|
|
if ($path === '') {
|
|
$sourcePath = $this->ownerView->getPath($this->share['file_source']);
|
|
$this->ownerView->unlockFile(dirname($sourcePath), ILockingProvider::LOCK_SHARED, true);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
|
|
* @param \OCP\Lock\ILockingProvider $provider
|
|
*/
|
|
public function changeLock($path, $type, ILockingProvider $provider) {
|
|
/** @var \OCP\Files\Storage $targetStorage */
|
|
list($targetStorage, $targetInternalPath) = $this->resolvePath($path);
|
|
$targetStorage->changeLock($targetInternalPath, $type, $provider);
|
|
}
|
|
|
|
/**
|
|
* @return array [ available, last_checked ]
|
|
*/
|
|
public function getAvailability() {
|
|
// shares do not participate in availability logic
|
|
return [
|
|
'available' => true,
|
|
'last_checked' => 0
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @param bool $available
|
|
*/
|
|
public function setAvailability($available) {
|
|
// shares do not participate in availability logic
|
|
}
|
|
|
|
public function isLocal() {
|
|
$this->init();
|
|
$ownerPath = $this->ownerView->getPath($this->share['item_source']);
|
|
list($targetStorage) = $this->ownerView->resolvePath($ownerPath);
|
|
return $targetStorage->isLocal();
|
|
}
|
|
}
|