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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\DAV\Migration;
use OCA\DAV\CalDAV\CalDavBackend;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
class RemoveClassifiedEventActivity implements IRepairStep {
/** @var IDBConnection */
private $connection;
public function __construct(IDBConnection $connection) {
$this->connection = $connection;
}
/**
* @inheritdoc
*/
public function getName() {
return 'Remove activity entries of private events';
}
/**
* @inheritdoc
*/
public function run(IOutput $output) {
if (!$this->connection->tableExists('activity')) {
return;
}
$deletedEvents = $this->removePrivateEventActivity();
$deletedEvents += $this->removeConfidentialUncensoredEventActivity();
$output->info("Removed $deletedEvents activity entries");
}
protected function removePrivateEventActivity(): int {
$deletedEvents = 0;
$delete = $this->connection->getQueryBuilder();
$delete->delete('activity')
->where($delete->expr()->neq('affecteduser', $delete->createParameter('owner')))
->andWhere($delete->expr()->eq('object_type', $delete->createParameter('type')))
->andWhere($delete->expr()->eq('object_id', $delete->createParameter('calendar_id')))
->andWhere($delete->expr()->like('subjectparams', $delete->createParameter('event_uid')));
$query = $this->connection->getQueryBuilder();
$query->select('c.principaluri', 'o.calendarid', 'o.uid')
->from('calendarobjects', 'o')
->leftJoin('o', 'calendars', 'c', $query->expr()->eq('c.id', 'o.calendarid'))
->where($query->expr()->eq('o.classification', $query->createNamedParameter(CalDavBackend::CLASSIFICATION_PRIVATE)));
$result = $query->execute();
while ($row = $result->fetch()) {
if ($row['principaluri'] === null) {
continue;
}
$delete->setParameter('owner', $this->getPrincipal($row['principaluri']))
->setParameter('type', 'calendar')
->setParameter('calendar_id', $row['calendarid'])
->setParameter('event_uid', '%' . $this->connection->escapeLikeParameter('{"id":"' . $row['uid'] . '"') . '%');
$deletedEvents += $delete->execute();
}
$result->closeCursor();
return $deletedEvents;
}
protected function removeConfidentialUncensoredEventActivity(): int {
$deletedEvents = 0;
$delete = $this->connection->getQueryBuilder();
$delete->delete('activity')
->where($delete->expr()->neq('affecteduser', $delete->createParameter('owner')))
->andWhere($delete->expr()->eq('object_type', $delete->createParameter('type')))
->andWhere($delete->expr()->eq('object_id', $delete->createParameter('calendar_id')))
->andWhere($delete->expr()->like('subjectparams', $delete->createParameter('event_uid')))
->andWhere($delete->expr()->notLike('subjectparams', $delete->createParameter('filtered_name')));
$query = $this->connection->getQueryBuilder();
$query->select('c.principaluri', 'o.calendarid', 'o.uid')
->from('calendarobjects', 'o')
->leftJoin('o', 'calendars', 'c', $query->expr()->eq('c.id', 'o.calendarid'))
->where($query->expr()->eq('o.classification', $query->createNamedParameter(CalDavBackend::CLASSIFICATION_CONFIDENTIAL)));
$result = $query->execute();
while ($row = $result->fetch()) {
if ($row['principaluri'] === null) {
continue;
}
$delete->setParameter('owner', $this->getPrincipal($row['principaluri']))
->setParameter('type', 'calendar')
->setParameter('calendar_id', $row['calendarid'])
->setParameter('event_uid', '%' . $this->connection->escapeLikeParameter('{"id":"' . $row['uid'] . '"') . '%')
->setParameter('filtered_name', '%' . $this->connection->escapeLikeParameter('{"id":"' . $row['uid'] . '","name":"Busy"') . '%');
$deletedEvents += $delete->execute();
}
$result->closeCursor();
return $deletedEvents;
}
protected function getPrincipal(string $principalUri): string {
$uri = explode('/', $principalUri);
return array_pop($uri);
}
}
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