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<?php
/**
* @author Björn Schießle <schiessle@owncloud.com>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @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 OC\Files\Cache;
class Shared_Updater {
/**
* Walk up the users file tree and update the etags.
*
* @param string $user user id
* @param string $path share mount point path, relative to the user's "files" folder
*/
static private function correctUsersFolder($user, $path) {
// $path points to the mount point which is a virtual folder, so we start with
// the parent
$path = '/' . ltrim($path, '/');
$path = '/files' . dirname($path);
\OC\Files\Filesystem::initMountPoints($user);
$view = new \OC\Files\View('/' . $user);
if ($view->file_exists($path)) {
while ($path !== dirname($path)) {
$etag = $view->getETag($path);
$view->putFileInfo($path, array('etag' => $etag));
$path = dirname($path);
}
} else {
\OCP\Util::writeLog('files_sharing', 'can not update etags on ' . $path . ' for user ' . $user . '. Path does not exists', \OCP\Util::DEBUG);
}
}
/**
* @param array $params
*/
static public function renameHook($params) {
self::renameChildren($params['oldpath'], $params['newpath']);
}
/**
* @param array $params
*/
static public function deleteHook($params) {
$path = $params['path'];
}
/**
* update etags if a file was shared
* @param array $params
*/
static public function postShareHook($params) {
if ($params['itemType'] === 'folder' || $params['itemType'] === 'file') {
$shareWith = $params['shareWith'];
$shareType = $params['shareType'];
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
self::correctUsersFolder($shareWith, $params['fileTarget']);
} elseif ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
foreach (\OC_Group::usersInGroup($shareWith) as $user) {
self::correctUsersFolder($user, $params['fileTarget']);
}
}
}
}
/**
* update etags if a file was unshared
*
* @param array $params
*/
static public function postUnshareHook($params) {
// only update etags for file/folders shared to local users/groups
if (($params['itemType'] === 'file' || $params['itemType'] === 'folder') &&
$params['shareType'] !== \OCP\Share::SHARE_TYPE_LINK &&
$params['shareType'] !== \OCP\Share::SHARE_TYPE_REMOTE) {
$deletedShares = isset($params['deletedShares']) ? $params['deletedShares'] : array();
foreach ($deletedShares as $share) {
if ($share['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
foreach (\OC_Group::usersInGroup($share['shareWith']) as $user) {
self::correctUsersFolder($user, $share['fileTarget']);
}
} else {
self::correctUsersFolder($share['shareWith'], $share['fileTarget']);
}
}
}
}
/**
* update etags if file was unshared from self
* @param array $params
*/
static public function postUnshareFromSelfHook($params) {
if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
foreach ($params['unsharedItems'] as $item) {
if ($item['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
foreach (\OC_Group::usersInGroup($item['shareWith']) as $user) {
self::correctUsersFolder($user, $item['fileTarget']);
}
} else {
self::correctUsersFolder($item['shareWith'], $item['fileTarget']);
}
}
}
}
/**
* clean up oc_share table from files which are no longer exists
*
* This fixes issues from updates from files_sharing < 0.3.5.6 (ownCloud 4.5)
* It will just be called during the update of the app
*/
static public function fixBrokenSharesOnAppUpdate() {
// delete all shares where the original file no longer exists
$findAndRemoveShares = \OCP\DB::prepare('DELETE FROM `*PREFIX*share` ' .
'WHERE `item_type` IN (\'file\', \'folder\') ' .
'AND `file_source` NOT IN (SELECT `fileid` FROM `*PREFIX*filecache`)'
);
$findAndRemoveShares->execute(array());
}
/**
* rename mount point from the children if the parent was renamed
*
* @param string $oldPath old path relative to data/user/files
* @param string $newPath new path relative to data/user/files
*/
static private function renameChildren($oldPath, $newPath) {
$absNewPath = \OC\Files\Filesystem::normalizePath('/' . \OCP\User::getUser() . '/files/' . $newPath);
$absOldPath = \OC\Files\Filesystem::normalizePath('/' . \OCP\User::getUser() . '/files/' . $oldPath);
$mountManager = \OC\Files\Filesystem::getMountManager();
$mountedShares = $mountManager->findIn('/' . \OCP\User::getUser() . '/files/' . $oldPath);
foreach ($mountedShares as $mount) {
if ($mount->getStorage()->instanceOfStorage('OCA\Files_Sharing\ISharedStorage')) {
$mountPoint = $mount->getMountPoint();
$target = str_replace($absOldPath, $absNewPath, $mountPoint);
$mount->moveMount($target);
}
}
}
}
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