From 8aa2bf4af4474b85e86e340b08d7c56081b68986 Mon Sep 17 00:00:00 2001
From: magiblot <magiblot@hotmail.com>
Date: Tue, 12 Nov 2019 22:42:11 +0100
Subject: [PATCH] tvdemo: prevent buffer overrun in file viewer

By allowing no more than maxLineLength+1 bytes being written into the array.
---
 examples/tvdemo/fileview.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/examples/tvdemo/fileview.cpp b/examples/tvdemo/fileview.cpp
index a70896f0..343ea1a2 100644
--- a/examples/tvdemo/fileview.cpp
+++ b/examples/tvdemo/fileview.cpp
@@ -72,10 +72,7 @@ void TFileViewer::draw()
             if( p == 0 || strlen(p) < delta.x )
                 s[0] = EOS;
             else
-                {
-                strncpy( s, p+delta.x, size.x );
-                s[size.x] = EOS;
-                }
+                strnzcpy( s, p+delta.x, maxLineLength+1 );
             b.moveStr( 0, s, c );
             }
         writeBuf( 0, i, (short)size.x, 1, b );