275 lines
7.9 KiB
PHP
275 lines
7.9 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Bart Visscher <bartv@thisnet.nl>
|
|
* @author Björn Schießle <bjoern@schiessle.org>
|
|
* @author Joas Schilling <coding@schilljs.com>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
* @author Morris Jobke <hey@morrisjobke.de>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
* @author Vincent Petry <pvince81@owncloud.com>
|
|
*
|
|
* @license AGPL-3.0
|
|
*
|
|
* This code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, version 3,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License, version 3,
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
namespace OCA\Files_Sharing;
|
|
|
|
use OC\Files\Filesystem;
|
|
use OC\Files\View;
|
|
use OCP\Files\NotFoundException;
|
|
use OCP\Share\Exceptions\ShareNotFound;
|
|
use OCP\User;
|
|
|
|
class Helper {
|
|
|
|
public static function registerHooks() {
|
|
\OCP\Util::connectHook('OC_Filesystem', 'post_rename', '\OCA\Files_Sharing\Updater', 'renameHook');
|
|
\OCP\Util::connectHook('OC_Filesystem', 'post_delete', '\OCA\Files_Sharing\Hooks', 'unshareChildren');
|
|
|
|
\OCP\Util::connectHook('OC_User', 'post_deleteUser', '\OCA\Files_Sharing\Hooks', 'deleteUser');
|
|
}
|
|
|
|
/**
|
|
* Sets up the filesystem and user for public sharing
|
|
* @param string $token string share token
|
|
* @param string $relativePath optional path relative to the share
|
|
* @param string $password optional password
|
|
* @return array
|
|
*/
|
|
public static function setupFromToken($token, $relativePath = null, $password = null) {
|
|
\OC_User::setIncognitoMode(true);
|
|
|
|
$shareManager = \OC::$server->getShareManager();
|
|
|
|
try {
|
|
$share = $shareManager->getShareByToken($token);
|
|
} catch (ShareNotFound $e) {
|
|
\OC_Response::setStatus(404);
|
|
\OCP\Util::writeLog('core-preview', 'Passed token parameter is not valid', \OCP\Util::DEBUG);
|
|
exit;
|
|
}
|
|
|
|
\OCP\JSON::checkUserExists($share->getShareOwner());
|
|
\OC_Util::tearDownFS();
|
|
\OC_Util::setupFS($share->getShareOwner());
|
|
|
|
|
|
try {
|
|
$path = Filesystem::getPath($share->getNodeId());
|
|
} catch (NotFoundException $e) {
|
|
\OCP\Util::writeLog('share', 'could not resolve linkItem', \OCP\Util::DEBUG);
|
|
\OC_Response::setStatus(404);
|
|
\OCP\JSON::error(array('success' => false));
|
|
exit();
|
|
}
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK && $share->getPassword() !== null) {
|
|
if (!self::authenticate($share, $password)) {
|
|
\OC_Response::setStatus(403);
|
|
\OCP\JSON::error(array('success' => false));
|
|
exit();
|
|
}
|
|
}
|
|
|
|
$basePath = $path;
|
|
|
|
if ($relativePath !== null && Filesystem::isReadable($basePath . $relativePath)) {
|
|
$path .= Filesystem::normalizePath($relativePath);
|
|
}
|
|
|
|
return array(
|
|
'share' => $share,
|
|
'basePath' => $basePath,
|
|
'realPath' => $path
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Authenticate link item with the given password
|
|
* or with the session if no password was given.
|
|
* @param \OCP\Share\IShare $share
|
|
* @param string $password optional password
|
|
*
|
|
* @return boolean true if authorized, false otherwise
|
|
*/
|
|
public static function authenticate($share, $password = null) {
|
|
$shareManager = \OC::$server->getShareManager();
|
|
|
|
if ($password !== null) {
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
|
|
if ($shareManager->checkPassword($share, $password)) {
|
|
\OC::$server->getSession()->set('public_link_authenticated', (string)$share->getId());
|
|
return true;
|
|
}
|
|
}
|
|
} else {
|
|
// not authenticated ?
|
|
if (\OC::$server->getSession()->exists('public_link_authenticated')
|
|
&& \OC::$server->getSession()->get('public_link_authenticated') !== (string)$share->getId()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public static function getSharesFromItem($target) {
|
|
$result = array();
|
|
$owner = Filesystem::getOwner($target);
|
|
Filesystem::initMountPoints($owner);
|
|
$info = Filesystem::getFileInfo($target);
|
|
$ownerView = new View('/'.$owner.'/files');
|
|
if ( $owner !== User::getUser() ) {
|
|
$path = $ownerView->getPath($info['fileid']);
|
|
} else {
|
|
$path = $target;
|
|
}
|
|
|
|
|
|
$ids = array();
|
|
while ($path !== dirname($path)) {
|
|
$info = $ownerView->getFileInfo($path);
|
|
if ($info instanceof \OC\Files\FileInfo) {
|
|
$ids[] = $info['fileid'];
|
|
} else {
|
|
\OCP\Util::writeLog('sharing', 'No fileinfo available for: ' . $path, \OCP\Util::WARN);
|
|
}
|
|
$path = dirname($path);
|
|
}
|
|
|
|
if (!empty($ids)) {
|
|
|
|
$idList = array_chunk($ids, 99, true);
|
|
|
|
foreach ($idList as $subList) {
|
|
$statement = "SELECT `share_with`, `share_type`, `file_target` FROM `*PREFIX*share` WHERE `file_source` IN (" . implode(',', $subList) . ") AND `share_type` IN (0, 1, 2)";
|
|
$query = \OCP\DB::prepare($statement);
|
|
$r = $query->execute();
|
|
$result = array_merge($result, $r->fetchAll());
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* get the UID of the owner of the file and the path to the file relative to
|
|
* owners files folder
|
|
*
|
|
* @param $filename
|
|
* @return array
|
|
* @throws \OC\User\NoUserException
|
|
*/
|
|
public static function getUidAndFilename($filename) {
|
|
$uid = Filesystem::getOwner($filename);
|
|
$userManager = \OC::$server->getUserManager();
|
|
// if the user with the UID doesn't exists, e.g. because the UID points
|
|
// to a remote user with a federated cloud ID we use the current logged-in
|
|
// user. We need a valid local user to create the share
|
|
if (!$userManager->userExists($uid)) {
|
|
$uid = User::getUser();
|
|
}
|
|
Filesystem::initMountPoints($uid);
|
|
if ( $uid !== User::getUser() ) {
|
|
$info = Filesystem::getFileInfo($filename);
|
|
$ownerView = new View('/'.$uid.'/files');
|
|
try {
|
|
$filename = $ownerView->getPath($info['fileid']);
|
|
} catch (NotFoundException $e) {
|
|
$filename = null;
|
|
}
|
|
}
|
|
return [$uid, $filename];
|
|
}
|
|
|
|
/**
|
|
* Format a path to be relative to the /user/files/ directory
|
|
* @param string $path the absolute path
|
|
* @return string e.g. turns '/admin/files/test.txt' into 'test.txt'
|
|
*/
|
|
public static function stripUserFilesPath($path) {
|
|
$trimmed = ltrim($path, '/');
|
|
$split = explode('/', $trimmed);
|
|
|
|
// it is not a file relative to data/user/files
|
|
if (count($split) < 3 || $split[1] !== 'files') {
|
|
return false;
|
|
}
|
|
|
|
$sliced = array_slice($split, 2);
|
|
return implode('/', $sliced);
|
|
}
|
|
|
|
/**
|
|
* check if file name already exists and generate unique target
|
|
*
|
|
* @param string $path
|
|
* @param array $excludeList
|
|
* @param View $view
|
|
* @return string $path
|
|
*/
|
|
public static function generateUniqueTarget($path, $excludeList, $view) {
|
|
$pathinfo = pathinfo($path);
|
|
$ext = isset($pathinfo['extension']) ? '.'.$pathinfo['extension'] : '';
|
|
$name = $pathinfo['filename'];
|
|
$dir = $pathinfo['dirname'];
|
|
$i = 2;
|
|
while ($view->file_exists($path) || in_array($path, $excludeList)) {
|
|
$path = Filesystem::normalizePath($dir . '/' . $name . ' ('.$i.')' . $ext);
|
|
$i++;
|
|
}
|
|
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* get default share folder
|
|
*
|
|
* @param \OC\Files\View
|
|
* @return string
|
|
*/
|
|
public static function getShareFolder($view = null) {
|
|
if ($view === null) {
|
|
$view = Filesystem::getView();
|
|
}
|
|
$shareFolder = \OC::$server->getConfig()->getSystemValue('share_folder', '/');
|
|
$shareFolder = Filesystem::normalizePath($shareFolder);
|
|
|
|
if (!$view->file_exists($shareFolder)) {
|
|
$dir = '';
|
|
$subdirs = explode('/', $shareFolder);
|
|
foreach ($subdirs as $subdir) {
|
|
$dir = $dir . '/' . $subdir;
|
|
if (!$view->is_dir($dir)) {
|
|
$view->mkdir($dir);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $shareFolder;
|
|
|
|
}
|
|
|
|
/**
|
|
* set default share folder
|
|
*
|
|
* @param string $shareFolder
|
|
*/
|
|
public static function setShareFolder($shareFolder) {
|
|
\OC::$server->getConfig()->setSystemValue('share_folder', $shareFolder);
|
|
}
|
|
|
|
}
|