From 338eedc17a210d994c2d8af822bcd2a8a3677f83 Mon Sep 17 00:00:00 2001
From: Roland Tapken <dev@cybso.de>
Date: Thu, 12 Oct 2023 11:26:41 +0200
Subject: [PATCH] Fixed NullPointerException when attachment hasn't filename
 attribute

---
 .../sourceforge/MSGViewer/factory/mbox/JavaMailParser.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/MSGViewer/src/main/java/net/sourceforge/MSGViewer/factory/mbox/JavaMailParser.java b/MSGViewer/src/main/java/net/sourceforge/MSGViewer/factory/mbox/JavaMailParser.java
index 3eb0553..1fe2d0b 100644
--- a/MSGViewer/src/main/java/net/sourceforge/MSGViewer/factory/mbox/JavaMailParser.java
+++ b/MSGViewer/src/main/java/net/sourceforge/MSGViewer/factory/mbox/JavaMailParser.java
@@ -106,7 +106,12 @@ private static void parse(Message msg, Part part) throws MessagingException, IOE
                 MimePart mpart = (MimePart) part;
 
                 FileAttachment att = new FileAttachment();
-                String filename = MimeUtility.decodeText(part.getFileName());
+                String filename = part.getFileName();
+                if (filename != null) {
+                    filename = MimeUtility.decodeText(filename);
+                } else {
+                    filename = "unknown";
+                }
                 att.setMimeTag(getMime(part.getContentType()));
                 att.setLongFilename(filename);