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[stable24] fix(dav) Handle Calendar trashbin UID conflicts by removing the deleted calendar object #37570

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merged 1 commit into from
Jun 12, 2023
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[stable24] fix(dav) Handle Calendar trashbin UID conflicts by removing the deleted calendar object #37570

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10 changes: 6 additions & 4 deletions apps/dav/lib/CalDAV/CalDavBackend.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1275,17 +1275,19 @@ public function createCalendarObject($calendarId, $objectUri, $calendarData, $ca
}
// For a more specific error message we also try to explicitly look up the UID but as a deleted entry
$qbDel = $this->db->getQueryBuilder();
$qbDel->select($qb->func()->count('*'))
$qbDel->select('*')
->from('calendarobjects')
->where($qbDel->expr()->eq('calendarid', $qbDel->createNamedParameter($calendarId)))
->andWhere($qbDel->expr()->eq('uid', $qbDel->createNamedParameter($extraData['uid'])))
->andWhere($qbDel->expr()->eq('calendartype', $qbDel->createNamedParameter($calendarType)))
->andWhere($qbDel->expr()->isNotNull('deleted_at'));
$result = $qbDel->executeQuery();
$count = (int) $result->fetchOne();
$found = $result->fetch();
$result->closeCursor();
if ($count !== 0) {
throw new BadRequest('Deleted calendar object with uid already exists in this calendar collection.');
if ($found !== false) {
// the object existed previously but has been deleted
// remove the trashbin entry and continue as if it was a new object
$this->deleteCalendarObject($calendarId, $found['uri']);
}

$query = $this->db->getQueryBuilder();
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