From 8c92f2c4132b7e12e686e90ed06256f62b088d62 Mon Sep 17 00:00:00 2001
From: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Date: Tue, 29 Aug 2023 10:35:50 +0200
Subject: [PATCH] common: fix NPE in AbstractUidPrincipal#equals

fixes commit 410762eb55

Fixes: #7325
Acked-by: Paul Millar
acked-by: Albert Rossi
Target: master
Require-book: no
Require-notes: no
---
 .../src/main/java/org/dcache/auth/AbstractUidPrincipal.java  | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/common/src/main/java/org/dcache/auth/AbstractUidPrincipal.java b/modules/common/src/main/java/org/dcache/auth/AbstractUidPrincipal.java
index 33a7279de98..7d4d78b87c9 100644
--- a/modules/common/src/main/java/org/dcache/auth/AbstractUidPrincipal.java
+++ b/modules/common/src/main/java/org/dcache/auth/AbstractUidPrincipal.java
@@ -101,6 +101,11 @@ public boolean equals(Object other) {
         if (this == other) {
             return true;
         }
+
+        if (other == null) {
+            return false;
+        }
+
         if (!(this.getClass().equals(other.getClass()))) {
             return false;
         }