From 57f00a0372c81a154e38e346e8e4e8577d9788d3 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Mon, 9 Jan 2023 16:48:31 +0100
Subject: [PATCH] demux_mf: replace unsafe string functions

---
 demux/demux_mf.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/demux/demux_mf.c b/demux/demux_mf.c
index 7074b7c832..d00072a39a 100644
--- a/demux/demux_mf.c
+++ b/demux/demux_mf.c
@@ -126,10 +126,9 @@ static mf_t *open_mf_pattern(void *talloc_ctx, struct demuxer *d, char *filename
 
 #if HAVE_GLOB
     if (!strchr(filename, '%')) {
-        strcpy(fname, filename);
-        if (!strchr(filename, '*'))
-            strcat(fname, "*");
-
+        // append * if none present
+        snprintf(fname, fname_avail, "%s%c", filename,
+            strchr(filename, '*') ? 0 : '*');
         mp_info(log, "search expr: %s\n", fname);
 
         glob_t gg;