From 11d8cef14db833d31e8ec4b98ecb3f7e1cb93002 Mon Sep 17 00:00:00 2001
From: Chris Schinnerl <chris@sia.tech>
Date: Wed, 11 Sep 2024 14:56:19 +0200
Subject: [PATCH] avoid panic in copyObject

---
 gofakes3.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gofakes3.go b/gofakes3.go
index 4c0090d..51e400a 100644
--- a/gofakes3.go
+++ b/gofakes3.go
@@ -742,6 +742,9 @@ func (g *GoFakeS3) copyObject(bucket, object string, meta map[string]string, w h
 
 	// XXX No support for versionId subresource
 	parts := strings.SplitN(strings.TrimPrefix(source, "/"), "/", 2)
+	if len(parts) != 2 {
+		return ErrInvalidArgument
+	}
 	srcBucket := parts[0]
 	srcKey := strings.SplitN(parts[1], "?", 2)[0]