From 75933d48fe257d8223e99af96b5f903b34b3d40a Mon Sep 17 00:00:00 2001
From: Thierry Fournier <tfournier@arpalert.org>
Date: Thu, 21 Jan 2016 09:30:18 +0100
Subject: [PATCH] BUG/MINOR: lua: unsafe initialization

During the Lua HAProxy initialisation, C functions using Lua calls
can throws an error. This error was not catched. This patch fix
this behaviour.
---
 src/hlua.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/hlua.c b/src/hlua.c
index 5cf23203f..1a31eb267 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -6591,6 +6591,12 @@ void hlua_init(void)
 	/* Initialise lua. */
 	luaL_openlibs(gL.T);
 
+	/* Set safe environment for the initialisation. */
+	if (!SET_SAFE_LJMP(gL.T)) {
+		fprintf(stderr, "Lua init: critical error.\n");
+		exit(1);
+	}
+
 	/*
 	 *
 	 * Create "core" object.
@@ -7151,4 +7157,6 @@ void hlua_init(void)
 	/* Initialize SSL server. */
 	ssl_sock_prepare_srv_ctx(&socket_ssl, &socket_proxy);
 #endif
+
+	RESET_SAFE_LJMP(gL.T);
 }