1 files changed, 119 insertions, 0 deletions
diff --git a/apps/dav/lib/Migration/CalDAVRemoveEmptyValue.php b/apps/dav/lib/Migration/CalDAVRemoveEmptyValue.php
new file mode 100644
index 00000000000..ae921ce4743
--- /dev/null
+++ b/apps/dav/lib/Migration/CalDAVRemoveEmptyValue.php
@@ -0,0 +1,119 @@
+<?php
+/**
+ * @copyright 2017 Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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 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) {
+		$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;
+	}
+}