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<?php
/**
* @copyright 2017 Joas Schilling <coding@schilljs.com>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Julius Härtl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\DAV\Migration;
use Doctrine\DBAL\Platforms\OraclePlatform;
use OCA\DAV\CalDAV\CalDavBackend;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\ILogger;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
use Sabre\VObject\InvalidDataException;
class CalDAVRemoveEmptyValue implements IRepairStep {
/** @var IDBConnection */
private $db;
/** @var CalDavBackend */
private $calDavBackend;
/** @var ILogger */
private $logger;
/**
* @param IDBConnection $db
* @param CalDavBackend $calDavBackend
* @param ILogger $logger
*/
public function __construct(IDBConnection $db, CalDavBackend $calDavBackend, ILogger $logger) {
$this->db = $db;
$this->calDavBackend = $calDavBackend;
$this->logger = $logger;
}
public function getName() {
return 'Fix broken values of calendar objects';
}
public function run(IOutput $output) {
$pattern = ';VALUE=:';
$count = $warnings = 0;
$objects = $this->getInvalidObjects($pattern);
$output->startProgress(count($objects));
foreach ($objects as $row) {
$calObject = $this->calDavBackend->getCalendarObject((int)$row['calendarid'], $row['uri']);
$data = preg_replace('/' . $pattern . '/', ':', $calObject['calendardata']);
if ($data !== $calObject['calendardata']) {
$output->advance();
try {
$this->calDavBackend->getDenormalizedData($data);
} catch (InvalidDataException $e) {
$this->logger->info('Calendar object for calendar {cal} with uri {uri} still invalid', [
'app' => 'dav',
'cal' => (int)$row['calendarid'],
'uri' => $row['uri'],
]);
$warnings++;
continue;
}
$this->calDavBackend->updateCalendarObject((int)$row['calendarid'], $row['uri'], $data);
$count++;
}
}
$output->finishProgress();
if ($warnings > 0) {
$output->warning(sprintf('%d events could not be updated, see log file for more information', $warnings));
}
if ($count > 0) {
$output->info(sprintf('Updated %d events', $count));
}
}
protected function getInvalidObjects($pattern) {
if ($this->db->getDatabasePlatform() instanceof OraclePlatform) {
$rows = [];
$chunkSize = 500;
$query = $this->db->getQueryBuilder();
$query->select($query->func()->count('*', 'num_entries'))
->from('calendarobjects');
$result = $query->execute();
$count = $result->fetchColumn();
$result->closeCursor();
$numChunks = ceil($count / $chunkSize);
$query = $this->db->getQueryBuilder();
$query->select(['calendarid', 'uri', 'calendardata'])
->from('calendarobjects')
->setMaxResults($chunkSize);
for ($chunk = 0; $chunk < $numChunks; $chunk++) {
$query->setFirstResult($chunk * $chunkSize);
$result = $query->execute();
while ($row = $result->fetch()) {
if (mb_strpos($row['calendardata'], $pattern) !== false) {
unset($row['calendardata']);
$rows[] = $row;
}
}
$result->closeCursor();
}
return $rows;
}
$query = $this->db->getQueryBuilder();
$query->select(['calendarid', 'uri'])
->from('calendarobjects')
->where($query->expr()->like(
'calendardata',
$query->createNamedParameter(
'%' . $this->db->escapeLikeParameter($pattern) . '%',
IQueryBuilder::PARAM_STR
),
IQueryBuilder::PARAM_STR
));
$result = $query->execute();
$rows = $result->fetchAll();
$result->closeCursor();
return $rows;
}
}
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