From f8846c2c39fbc62c9284c613ef4a196bb090f071 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Fri, 3 Jan 2020 16:54:59 +0000
Subject: [PATCH] Add a tostring metamethod for bignum objects. See #1876

---
 nse_openssl.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nse_openssl.cc b/nse_openssl.cc
index 03aa64c45..3126cf795 100644
--- a/nse_openssl.cc
+++ b/nse_openssl.cc
@@ -650,6 +650,9 @@ LUALIB_API int luaopen_openssl(lua_State *L) {
   // metatable.__index = metatable
   lua_pushvalue( L, -1 );
   lua_setfield( L, -2, "__index" );
+  // metatable.__tostring = bignum_bn2hex
+  lua_pushcfunction( L, l_bignum_bn2hex );
+  lua_setfield( L, -2, "__tostring" );
   // register methods
   luaL_setfuncs(L, bignum_methods, 0);