275 lines
7.5 KiB
PHP
275 lines
7.5 KiB
PHP
<?php
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/**
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* ownCloud - Documents App
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*
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* @author Victor Dubiniuk
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* @copyright 2013 Victor Dubiniuk victor.dubiniuk@gmail.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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 Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\Documents;
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class File {
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protected $fileId;
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protected $owner;
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protected $path;
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protected $sharing;
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protected $passwordProtected = false;
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public function __construct($fileId, $shareOps = null){
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if (!$fileId){
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throw new \Exception('No valid file has been passed');
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}
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$this->fileId = $fileId;
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//if you know how to get sharing info by fileId via API,
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//please send me a link to video tutorial :/
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if (!is_null($shareOps)){
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$this->sharing = $shareOps;
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} else {
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$this->sharing = $this->getSharingOps();
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}
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}
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public static function getByShareToken($token){
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$linkItem = \OCP\Share::getShareByToken($token, false);
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if (is_array($linkItem) && isset($linkItem['uid_owner'])) {
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// seems to be a valid share
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$rootLinkItem = \OCP\Share::resolveReShare($linkItem);
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$fileOwner = $rootLinkItem['uid_owner'];
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} else {
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throw new \Exception('This file was probably unshared');
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}
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if (!isset($rootLinkItem['path']) && isset($rootLinkItem['file_target'])){
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$rootLinkItem['path'] = $rootLinkItem['file_target'];
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}
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$file = new File($rootLinkItem['file_source'], array($rootLinkItem));
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if (isset($rootLinkItem['uid_owner'])){
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\OC_Util::tearDownFS();
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\OC_Util::setupFS($rootLinkItem['uid_owner']);
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$file->setOwner($rootLinkItem['uid_owner']);
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$file->setPath(\OC\Files\Filesystem::getPath($linkItem['file_source']));
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}
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if (isset($linkItem['share_with']) && !empty($linkItem['share_with'])){
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$file->setPasswordProtected(true);
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}
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return $file;
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}
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public function getFileId(){
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return $this->fileId;
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}
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public function setOwner($owner){
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$this->owner = $owner;
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}
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public function setPath($path){
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$this->path = $path;
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}
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public function isPublicShare(){
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foreach ($this->sharing as $share){
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if (
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$share['share_type'] == \OCP\Share::SHARE_TYPE_LINK
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|| $share['share_type'] == \OCP\Share::SHARE_TYPE_EMAIL
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){
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return true;
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}
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}
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return false;
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}
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public function isPasswordProtected(){
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return $this->passwordProtected;
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}
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public function checkPassword($password){
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$shareId = $this->getShareId();
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if (!$this->isPasswordProtected()
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|| (\OC::$session->exists('public_link_authenticated')
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&& \OC::$session->get('public_link_authenticated') === $shareId)
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){
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return true;
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}
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// Check Password
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$forcePortable = (CRYPT_BLOWFISH != 1);
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$hasher = new \PasswordHash(8, $forcePortable);
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if ($hasher->CheckPassword($password.\OC_Config::getValue('passwordsalt', ''),
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$this->getPassword())) {
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// Save item id in session for future request
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\OC::$session->set('public_link_authenticated', $shareId);
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return true;
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}
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return false;
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}
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public function setPasswordProtected($value){
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$this->passwordProtected = $value;
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}
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public function getPermissions(){
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if (count($this->sharing)){
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if ($this->isPublicShare()){
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$permissions = \OCP\PERMISSION_READ | \OCP\PERMISSION_UPDATE;
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} else {
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$permissions = $this->sharing[0]['permissions'];
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}
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} else {
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list($owner, $path) = $this->getOwnerViewAndPath();
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$permissions = 0;
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if (\OC\Files\Filesystem::isReadable($path)){
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$permissions |= \OCP\PERMISSION_READ;
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}
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if (\OC\Files\Filesystem::isUpdatable($path)){
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$permissions |= \OCP\PERMISSION_UPDATE;
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}
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}
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return $permissions;
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}
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/**
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* Rename this file to the given name
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* @param string $newName name to give (without path)
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* @return boolean true if rename succeeded, false otherwise
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*/
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public function renameTo($newName) {
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list($owner, $path) = $this->getOwnerViewAndPath();
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$newPath = dirname($path) . '/' . $newName;
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return \OC\Files\Filesystem::rename($path, $newPath);
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}
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/**
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*
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* @return string owner of the current file item
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* @throws \Exception
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*/
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public function getOwnerViewAndPath(){
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if (!$this->owner || !$this->path){
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if ($this->isPublicShare()){
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list($owner, $path) = $this->getSharedFileOwnerAndPath();
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} else {
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$owner = \OCP\User::getUser();
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$path = Storage::resolvePath($this->fileId);
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if (!$path){
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throw new \Exception($this->fileId . ' can not be resolved');
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}
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}
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$this->path = $path;
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$this->owner = $owner;
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}
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$view = new View('/' . $this->owner . '/files');
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if (!$view->file_exists($this->path)){
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throw new \Exception($this->path . ' doesn\'t exist');
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}
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return array($view, $this->path);
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}
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public function getOwner(){
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if (!$this->owner){
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$this->getOwnerViewAndPath();
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}
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return $this->owner;
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}
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/**
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* public links only
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* @return array
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*/
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protected function getSharedFileOwnerAndPath(){
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foreach ($this->sharing as $share){
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$rootLinkItem = \OCP\Share::resolveReShare($share);
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if (isset($rootLinkItem['uid_owner'])){
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$owner = $rootLinkItem['uid_owner'];
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} else {
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$owner = false;
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}
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\OC_Util::tearDownFS();
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\OC_Util::setupFS($owner);
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return array(
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$owner,
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\OC\Files\Filesystem::getPath($rootLinkItem['file_source'])
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);
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}
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return $result;
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}
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protected function getLocalFileOwnerAndPath(){
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$fileInfo = \OC\Files\Cache\Cache::getById($this->fileId);
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$owner = \OCP\User::getUser();
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if (!$owner){
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throw new Exception('Guest users can\'t access local files. This one was probably unshared recently.');
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}
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return array ($owner, @$fileInfo[1]);
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}
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protected function getPassword(){
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return $this->sharing[0]['share_with'];
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}
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protected function getShareId(){
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return $this->sharing[0]['id'];
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}
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protected function getSharingOps(){
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$where = 'AND `file_source`=?';
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$values = array($this->fileId);
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if (\OCP\User::isLoggedIn()){
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$where .= ' AND ((`share_type`=' . \OCP\Share::SHARE_TYPE_USER . ' AND `share_with`=?) OR `share_type`=' . \OCP\Share::SHARE_TYPE_LINK . ')';
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$values[] = \OCP\User::getUser();
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} else {
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$where .= ' AND (`share_type`=' . \OCP\Share::SHARE_TYPE_LINK . ')';
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}
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$query = \OC_DB::prepare('SELECT `*PREFIX*share`.`id`, `item_type`, `*PREFIX*share`.`parent`, `uid_owner`, '
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.'`share_type`, `share_with`, `file_source`, `path`, `file_target`, '
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.'`permissions`, `expiration`, `storage`, `*PREFIX*filecache`.`parent` as `file_parent`, '
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.'`name`, `mtime`, `mimetype`, `mimepart`, `size`, `encrypted`, `etag`'
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.'FROM `*PREFIX*share` INNER JOIN `*PREFIX*filecache` ON `file_source` = `*PREFIX*filecache`.`fileid` WHERE `item_type` = \'file\' ' . $where);
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$result = $query->execute($values);
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$shares = $result->fetchAll();
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$origins = array();
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if (is_array($shares)){
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foreach ($shares as $share){
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$origin = \OCP\Share::resolveReShare($share);
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if (!isset($origin['path']) && isset($origin['file_target'])){
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$origin['path'] = 'files/' . $origin['file_target'];
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}
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$origins[] = $origin;
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}
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}
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return $origins;
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}
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}
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