From 3be0490b683791538884b778f0c5a7ad3b1f0499 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Tollk=C3=BChn?= <s.tollkuehn@bnvb-ingenieure.de>
Date: Thu, 8 Oct 2026 13:20:16 +0200
Subject: [PATCH] check if calendar is writeable

---
 lib/Controller/CalendarController.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Controller/CalendarController.php b/lib/Controller/CalendarController.php
index 461bb47..b029587 100644
--- a/lib/Controller/CalendarController.php
+++ b/lib/Controller/CalendarController.php
@@ -12,6 +12,7 @@ use OCP\AppFramework\Http\RedirectResponse;
 use OCP\AppFramework\Http\TemplateResponse;
 use OCP\Calendar\ICreateFromString;
 use OCP\Calendar\IManager;
+use OCP\Constansts;
 use OCP\IRequest;
 use OCP\IURLGenerator;
 use OCP\IUserSession;
@@ -199,7 +200,8 @@ class CalendarController extends Controller
         $writable = [];
 
         foreach ($calendars as $calendar) {
-            if ($calendar instanceof ICreateFromString) {
+            if ($calendar instanceof ICreateFromString
+                && ($calendar->getPermissions() & Constants::PERMISSION_CREATE) !== 0) {
                 $writable[] = $calendar;
             }
         }