From 39b09776b60965ff0daaa36e15ee8b3739887661 Mon Sep 17 00:00:00 2001
From: Wahaj18 <48466561+Wahaj18@users.noreply.github.com>
Date: Mon, 2 Nov 2026 12:41:42 +0500
Subject: [PATCH] Leave room for the terminating NUL in rotctld replies

rotctld_socket_rw() let recv() fill the whole buffer and then wrote
the terminating NUL at buffout[size], one byte past the end of the
128-byte buffers used by get_pos(), set_pos() and rot_locked_cb()
when the reply was 128 bytes or longer. Read at most sizeout - 1
bytes, as the rigctld helper in gtk-rig-ctrl.c already does.

Fixes #435
---
 src/gtk-rot-ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gtk-rot-ctrl.c b/src/gtk-rot-ctrl.c
index f3282317..bea0cfed 100644
--- a/src/gtk-rot-ctrl.c
+++ b/src/gtk-rot-ctrl.c
@@ -177,7 +177,7 @@ static gboolean rotctld_socket_rw(gint sock, gchar *buff, gchar *buffout,
     }
 
     /* try to read answer */
-    size = recv(sock, buffout, sizeout, 0);
+    size = recv(sock, buffout, sizeout - 1, 0);
 
     if (size == -1)
     {