hide shared files located in group folder's trash bin

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Author: blizzz

lib/private/Share20/DefaultShareProvider.php

@@ -55,6 +55,7 @@
 use OCP\Share\IAttributes;
 use OCP\Share\IShare;
 use OCP\Share\IShareProvider;
+use function str_starts_with;
 
 /**
  * Class DefaultShareProvider
@@ -885,6 +886,11 @@ private function isAccessibleResult($data) {
 		if ($pathSections[0] !== 'files'
 			&& (strpos($data['storage_string_id'], 'home::') === 0 || strpos($data['storage_string_id'], 'object::user') === 0)) {
 			return false;
+		} else if ($pathSections[0] === '__groupfolders'
+			&& str_starts_with($pathSections[1], 'trash/')
+		) {
+			// exclude shares leading to trashbin on group folders storages
+			return false;
 		}
 		return true;
 	}