From 5302e5cdb047ae0fc16e9229b2e310d2cbf68c5e Mon Sep 17 00:00:00 2001
From: Christoph Lehmann <lehmann@networkteam.com>
Date: Thu, 1 Apr 2021 23:25:55 +0200
Subject: [PATCH] [BUGFIX] Handle non-existent event in
 checkCancelRegistration()

This prevents 'Call to a member function getEnableCancel() on null'
---
 Classes/Service/RegistrationService.php  | 6 ++++++
 Resources/Private/Language/locallang.xlf | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/Classes/Service/RegistrationService.php b/Classes/Service/RegistrationService.php
index 02c6493bc..ff7c96c77 100644
--- a/Classes/Service/RegistrationService.php
+++ b/Classes/Service/RegistrationService.php
@@ -278,6 +278,12 @@ public function checkCancelRegistration($reguid, $hmac)
             $titleKey = 'cancelRegistration.title.failed';
         }
 
+        if (!$failed && is_null($registration->getEvent())) {
+            $failed = true;
+            $messageKey = 'event.message.cancel_failed_event_not_found';
+            $titleKey = 'cancelRegistration.title.failed';
+        }
+
         if (!$failed && $registration->getEvent()->getEnableCancel() === false) {
             $failed = true;
             $messageKey = 'event.message.confirmation_failed_cancel_disabled';
diff --git a/Resources/Private/Language/locallang.xlf b/Resources/Private/Language/locallang.xlf
index 8c41d3c4b..ed3457ccf 100644
--- a/Resources/Private/Language/locallang.xlf
+++ b/Resources/Private/Language/locallang.xlf
@@ -234,6 +234,9 @@
 			<trans-unit id="event.message.confirmation_failed_registration_not_found">
 				<source>Confirmation failed, registration not found.</source>
 			</trans-unit>
+			<trans-unit id="event.message.cancel_failed_event_not_found">
+				<source>Cancellation failed, event not found.</source>
+			</trans-unit>
 			<trans-unit id="event.message.confirmation_failed_confirmation_until_expired">
 				<source>Confirmation failed, confirmation date has expired.</source>
 			</trans-unit>