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-rw-r--r--apps/dav/lib/CardDAV/CardDavBackend.php13
1 files changed, 13 insertions, 0 deletions
diff --git a/apps/dav/lib/CardDAV/CardDavBackend.php b/apps/dav/lib/CardDAV/CardDavBackend.php
index a8907f631cd..eb94885d177 100644
--- a/apps/dav/lib/CardDAV/CardDavBackend.php
+++ b/apps/dav/lib/CardDAV/CardDavBackend.php
@@ -611,6 +611,19 @@ class CardDavBackend implements BackendInterface, SyncSupport {
$etag = md5($cardData);
$uid = $this->getUID($cardData);
+ $q = $this->db->getQueryBuilder();
+ $q->select('uid')
+ ->from('cards')
+ ->where($q->expr()->eq('addressbookid', $q->createNamedParameter($addressBookId)))
+ ->andWhere($q->expr()->eq('uid', $q->createNamedParameter($uid)))
+ ->setMaxResults(1);
+ $result = $q->execute();
+ $count = (bool) $result->fetchColumn();
+ $result->closeCursor();
+ if ($count) {
+ throw new \Sabre\DAV\Exception\BadRequest('VCard object with uid already exists in this addressbook collection.');
+ }
+
$query = $this->db->getQueryBuilder();
$query->insert('cards')
->values([