122 lines
3.6 KiB
PHP
122 lines
3.6 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Joas Schilling <coding@schilljs.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program 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 License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Repair;
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use OCP\Migration\IOutput;
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use OCP\Migration\IRepairStep;
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/**
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* Repairs shares with invalid data
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*/
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class RepairInvalidShares implements IRepairStep {
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const CHUNK_SIZE = 200;
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/** @var \OCP\IConfig */
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protected $config;
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/** @var \OCP\IDBConnection */
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protected $connection;
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/**
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* @param \OCP\IConfig $config
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* @param \OCP\IDBConnection $connection
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*/
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public function __construct($config, $connection) {
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$this->connection = $connection;
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$this->config = $config;
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}
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public function getName() {
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return 'Repair invalid shares';
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}
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/**
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* Adjust file share permissions
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* @suppress SqlInjectionChecker
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*/
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private function adjustFileSharePermissions(IOutput $out) {
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$mask = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_SHARE;
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$builder = $this->connection->getQueryBuilder();
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$permsFunc = $builder->expr()->bitwiseAnd('permissions', $mask);
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$builder
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->update('share')
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->set('permissions', $permsFunc)
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->where($builder->expr()->eq('item_type', $builder->expr()->literal('file')))
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->andWhere($builder->expr()->neq('permissions', $permsFunc));
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$updatedEntries = $builder->execute();
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if ($updatedEntries > 0) {
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$out->info('Fixed file share permissions for ' . $updatedEntries . ' shares');
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}
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}
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/**
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* Remove shares where the parent share does not exist anymore
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*/
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private function removeSharesNonExistingParent(IOutput $out) {
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$deletedEntries = 0;
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$query = $this->connection->getQueryBuilder();
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$query->select('s1.parent')
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->from('share', 's1')
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->where($query->expr()->isNotNull('s1.parent'))
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->andWhere($query->expr()->isNull('s2.id'))
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->leftJoin('s1', 'share', 's2', $query->expr()->eq('s1.parent', 's2.id'))
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->groupBy('s1.parent')
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->setMaxResults(self::CHUNK_SIZE);
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$deleteQuery = $this->connection->getQueryBuilder();
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$deleteQuery->delete('share')
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->where($deleteQuery->expr()->eq('parent', $deleteQuery->createParameter('parent')));
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$deletedInLastChunk = self::CHUNK_SIZE;
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while ($deletedInLastChunk === self::CHUNK_SIZE) {
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$deletedInLastChunk = 0;
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$result = $query->execute();
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while ($row = $result->fetch()) {
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$deletedInLastChunk++;
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$deletedEntries += $deleteQuery->setParameter('parent', (int) $row['parent'])
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->execute();
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}
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$result->closeCursor();
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}
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if ($deletedEntries) {
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$out->info('Removed ' . $deletedEntries . ' shares where the parent did not exist');
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}
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}
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public function run(IOutput $out) {
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$ocVersionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0');
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if (version_compare($ocVersionFromBeforeUpdate, '12.0.0.11', '<')) {
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$this->adjustFileSharePermissions($out);
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}
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$this->removeSharesNonExistingParent($out);
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}
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}
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