nextcloud/apps/files_sharing/lib/updater.php

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<?php
/**
* ownCloud
*
* @author Michael Gapczynski
* @copyright 2013 Michael Gapczynski mtgap@owncloud.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OC\Files\Cache;
class Shared_Updater {
/**
* Correct the parent folders' ETags for all users shared the file at $target
*
* @param string $target
*/
static public function correctFolders($target) {
$uid = \OCP\User::getUser();
$uidOwner = \OC\Files\Filesystem::getOwner($target);
$info = \OC\Files\Filesystem::getFileInfo($target);
// Correct Shared folders of other users shared with
$users = \OCP\Share::getUsersItemShared('file', $info['fileid'], $uidOwner, true);
if (!empty($users)) {
while (!empty($users)) {
$reshareUsers = array();
foreach ($users as $user) {
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if ( $user !== $uidOwner ) {
$etag = \OC\Files\Filesystem::getETag('');
\OCP\Config::setUserValue($user, 'files_sharing', 'etag', $etag);
// Look for reshares
$reshareUsers = array_merge($reshareUsers, \OCP\Share::getUsersItemShared('file', $info['fileid'], $user, true));
}
}
$users = $reshareUsers;
}
// Correct folders of shared file owner
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$target = substr($target, 8);
if ($uidOwner !== $uid && $source = \OC_Share_Backend_File::getSource($target)) {
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\OC\Files\Filesystem::initMountPoints($uidOwner);
$source = '/'.$uidOwner.'/'.$source['path'];
\OC\Files\Cache\Updater::correctFolder($source, $info['mtime']);
}
}
}
/**
* @param array $params
*/
static public function writeHook($params) {
self::correctFolders($params['path']);
}
/**
* @param array $params
*/
static public function renameHook($params) {
self::correctFolders($params['newpath']);
self::correctFolders(pathinfo($params['oldpath'], PATHINFO_DIRNAME));
}
/**
* @param array $params
*/
static public function deleteHook($params) {
self::correctFolders($params['path']);
}
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/**
* @param array $params
*/
static public function shareHook($params) {
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if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
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$uidOwner = \OCP\User::getUser();
$users = \OCP\Share::getUsersItemShared($params['itemType'], $params['fileSource'], $uidOwner, true);
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if (!empty($users)) {
while (!empty($users)) {
$reshareUsers = array();
foreach ($users as $user) {
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if ($user !== $uidOwner) {
$etag = \OC\Files\Filesystem::getETag('');
\OCP\Config::setUserValue($user, 'files_sharing', 'etag', $etag);
// Look for reshares
$reshareUsers = array_merge($reshareUsers, \OCP\Share::getUsersItemShared('file', $params['fileSource'], $user, true));
}
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}
$users = $reshareUsers;
}
}
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}
}
}