From 922bdeb57a43738e4c137bdb206924aaa80da19c Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Sun, 5 Nov 2023 10:51:41 -0600
Subject: [PATCH] Catch corrupted tarballs so we don't set a nonsense mode.

---
 toys/posix/tar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/toys/posix/tar.c b/toys/posix/tar.c
index 35554d7c..e760a43a 100644
--- a/toys/posix/tar.c
+++ b/toys/posix/tar.c
@@ -799,7 +799,7 @@ static void unpack_tar(char *first)
 
     // At this point, we have something to output. Convert metadata.
     TT.hdr.mode = OTOI(tar.mode)&0xfff;
-    if (tar.type == 'S' || !tar.type) TT.hdr.mode |= 0x8000;
+    if (tar.type == 'S' || !tar.type || !*tar.magic) TT.hdr.mode |= 0x8000;
     else TT.hdr.mode |= (char []){8,8,10,2,6,4,1,8}[tar.type-'0']<<12;
     TT.hdr.uid = OTOI(tar.uid);
     TT.hdr.gid = OTOI(tar.gid);
-- 
2.39.2