From ca7f0b0103048e67c75be757a886425859a1f897 Mon Sep 17 00:00:00 2001
From: Chris Palmer <chris@red-oxide.org>
Date: Thu, 14 Oct 2021 21:02:39 -0400
Subject: [PATCH] make sure to wrote the file is a .bin

---
 barefeed.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/barefeed.go b/barefeed.go
index 83e60f4..d3db62a 100644
--- a/barefeed.go
+++ b/barefeed.go
@@ -233,6 +233,11 @@ func (d FeedEntries) walk(path string, f os.FileInfo, err error) error {
 func writeBin(bin Bin, path ...string) (err error) {
 	p := filepath.Join(path...)
 
+	if filepath.Ext(p) != ".bin" {
+		err = fmt.Errorf("must be a .bin file")
+		return
+	}
+
 	var f *os.File
 	f, err = os.Create(filepath.Clean(p))
 	if err != nil {
-- 
2.38.5