From e71db404923f8c8b53e7968f8a10d3e7de0abe2a Mon Sep 17 00:00:00 2001
From: Carl Schwan <carl@carlschwan.eu>
Date: Thu, 3 Feb 2022 21:41:17 +0100
Subject: [PATCH] Wrap multiple inserts inside a transation

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
---
 apps/dav/lib/CardDAV/CardDavBackend.php | 34 +++++++++++++++----------
 1 file changed, 21 insertions(+), 13 deletions(-)

diff --git a/apps/dav/lib/CardDAV/CardDavBackend.php b/apps/dav/lib/CardDAV/CardDavBackend.php
index ec1fef0b965..f5ed9a548d1 100644
--- a/apps/dav/lib/CardDAV/CardDavBackend.php
+++ b/apps/dav/lib/CardDAV/CardDavBackend.php
@@ -1271,21 +1271,29 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 				]
 			);
 
-		foreach ($vCard->children() as $property) {
-			if (!in_array($property->name, self::$indexProperties)) {
-				continue;
-			}
-			$preferred = 0;
-			foreach ($property->parameters as $parameter) {
-				if ($parameter->name === 'TYPE' && strtoupper($parameter->getValue()) === 'PREF') {
-					$preferred = 1;
-					break;
+
+		$this->db->beginTransaction();
+
+		try {
+			foreach ($vCard->children() as $property) {
+				if (!in_array($property->name, self::$indexProperties)) {
+					continue;
+				}
+				$preferred = 0;
+				foreach ($property->parameters as $parameter) {
+					if ($parameter->name === 'TYPE' && strtoupper($parameter->getValue()) === 'PREF') {
+						$preferred = 1;
+						break;
+					}
 				}
+				$query->setParameter('name', $property->name);
+				$query->setParameter('value', mb_strcut($property->getValue(), 0, 254));
+				$query->setParameter('preferred', $preferred);
+				$query->execute();
 			}
-			$query->setParameter('name', $property->name);
-			$query->setParameter('value', mb_strcut($property->getValue(), 0, 254));
-			$query->setParameter('preferred', $preferred);
-			$query->execute();
+			$this->db->commit();
+		} catch (\Exception $e) {
+			$this->db->rollBack();
 		}
 	}
 
-- 
2.39.5