236 lines
7.2 KiB
PHP
236 lines
7.2 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @copyright 2013 Michael Gapczynski mtgap@owncloud.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 Affero 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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namespace OC\Files\Cache;
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class Shared_Updater {
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// shares which can be removed from oc_share after the delete operation was successful
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static private $toRemove = array();
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/**
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* walk up the users file tree and update the etags
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* @param string $user
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* @param string $path
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*/
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static private function correctUsersFolder($user, $path) {
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// $path points to the mount point which is a virtual folder, so we start with
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// the parent
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$path = '/files' . dirname($path);
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\OC\Files\Filesystem::initMountPoints($user);
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$view = new \OC\Files\View('/' . $user);
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if ($view->file_exists($path)) {
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while ($path !== dirname($path)) {
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$etag = $view->getETag($path);
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$view->putFileInfo($path, array('etag' => $etag));
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$path = dirname($path);
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}
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} else {
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\OCP\Util::writeLog('files_sharing', 'can not update etags on ' . $path . ' for user ' . $user . '. Path does not exists', \OCP\Util::DEBUG);
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}
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}
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/**
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* Correct the parent folders' ETags for all users shared the file at $target
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*
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* @param string $target
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*/
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static public function correctFolders($target) {
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// ignore part files
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if (pathinfo($target, PATHINFO_EXTENSION) === 'part') {
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return false;
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}
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// Correct Shared folders of other users shared with
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$shares = \OCA\Files_Sharing\Helper::getSharesFromItem($target);
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foreach ($shares as $share) {
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if ((int)$share['share_type'] === \OCP\Share::SHARE_TYPE_USER) {
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self::correctUsersFolder($share['share_with'], $share['file_target']);
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} elseif ((int)$share['share_type'] === \OCP\Share::SHARE_TYPE_GROUP) {
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$users = \OC_Group::usersInGroup($share['share_with']);
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foreach ($users as $user) {
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self::correctUsersFolder($user, $share['file_target']);
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}
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} else { //unique name for group share
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self::correctUsersFolder($share['share_with'], $share['file_target']);
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}
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}
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}
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/**
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* remove all shares for a given file if the file was deleted
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*
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* @param string $path
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*/
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private static function removeShare($path) {
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$fileSource = self::$toRemove[$path];
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if (!\OC\Files\Filesystem::file_exists($path)) {
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$query = \OC_DB::prepare('DELETE FROM `*PREFIX*share` WHERE `file_source`=?');
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try {
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\OC_DB::executeAudited($query, array($fileSource));
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} catch (\Exception $e) {
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\OCP\Util::writeLog('files_sharing', "can't remove share: " . $e->getMessage(), \OCP\Util::WARN);
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}
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}
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unset(self::$toRemove[$path]);
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}
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/**
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* @param array $params
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*/
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static public function writeHook($params) {
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self::correctFolders($params['path']);
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}
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/**
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* @param array $params
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*/
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static public function renameHook($params) {
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self::correctFolders($params['newpath']);
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self::correctFolders(pathinfo($params['oldpath'], PATHINFO_DIRNAME));
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self::renameChildren($params['oldpath'], $params['newpath']);
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}
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/**
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* @param array $params
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*/
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static public function deleteHook($params) {
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$path = $params['path'];
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self::correctFolders($path);
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$fileInfo = \OC\Files\Filesystem::getFileInfo($path);
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// mark file as deleted so that we can clean up the share table if
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// the file was deleted successfully
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self::$toRemove[$path] = $fileInfo['fileid'];
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}
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/**
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* @param array $params
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*/
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static public function postDeleteHook($params) {
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self::removeShare($params['path']);
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}
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/**
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* update etags if a file was shared
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* @param array $params
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*/
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static public function postShareHook($params) {
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if ($params['itemType'] === 'folder' || $params['itemType'] === 'file') {
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$shareWith = $params['shareWith'];
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$shareType = $params['shareType'];
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if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
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self::correctUsersFolder($shareWith, '/');
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} elseif ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
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foreach (\OC_Group::usersInGroup($shareWith) as $user) {
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self::correctUsersFolder($user, '/');
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}
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}
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}
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}
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/**
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* update etags if a file was unshared
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*
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* @param array $params
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*/
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static public function postUnshareHook($params) {
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if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
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$deletedShares = isset($params['deletedShares']) ? $params['deletedShares'] : array();
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foreach ($deletedShares as $share) {
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if ($share['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
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foreach (\OC_Group::usersInGroup($share['shareWith']) as $user) {
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self::correctUsersFolder($user, dirname($share['fileTarget']));
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}
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} else {
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self::correctUsersFolder($share['shareWith'], dirname($share['fileTarget']));
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}
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}
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}
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}
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/**
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* update etags if file was unshared from self
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* @param array $params
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*/
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static public function postUnshareFromSelfHook($params) {
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if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
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foreach ($params['unsharedItems'] as $item) {
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if ($item['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
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foreach (\OC_Group::usersInGroup($item['shareWith']) as $user) {
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self::correctUsersFolder($user, dirname($item['fileTarget']));
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}
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} else {
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self::correctUsersFolder($item['shareWith'], dirname($item['fileTarget']));
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}
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}
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}
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}
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/**
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* clean up oc_share table from files which are no longer exists
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*
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* This fixes issues from updates from files_sharing < 0.3.5.6 (ownCloud 4.5)
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* It will just be called during the update of the app
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*/
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static public function fixBrokenSharesOnAppUpdate() {
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// delete all shares where the original file no longer exists
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$findAndRemoveShares = \OC_DB::prepare('DELETE FROM `*PREFIX*share` ' .
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'WHERE `item_type` IN (\'file\', \'folder\') ' .
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'AND `file_source` NOT IN (SELECT `fileid` FROM `*PREFIX*filecache`)'
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);
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$findAndRemoveShares->execute(array());
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}
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/**
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* rename mount point from the children if the parent was renamed
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*
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* @param string $oldPath old path relative to data/user/files
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* @param string $newPath new path relative to data/user/files
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*/
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static private function renameChildren($oldPath, $newPath) {
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$absNewPath = \OC\Files\Filesystem::normalizePath('/' . \OCP\User::getUser() . '/files/' . $newPath);
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$absOldPath = \OC\Files\Filesystem::normalizePath('/' . \OCP\User::getUser() . '/files/' . $oldPath);
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$mountManager = \OC\Files\Filesystem::getMountManager();
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$mountedShares = $mountManager->findIn('/' . \OCP\User::getUser() . '/files/' . $oldPath);
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foreach ($mountedShares as $mount) {
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if ($mount->getStorage()->instanceOfStorage('OCA\Files_Sharing\ISharedStorage')) {
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$mountPoint = $mount->getMountPoint();
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$target = str_replace($absOldPath, $absNewPath, $mountPoint);
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$mount->moveMount($target);
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}
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}
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}
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}
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