From 3c2c057d2d46e79f69b4aa6879f87035b45ab329 Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 3 Jul 2020 12:25:46 +0100
Subject: [PATCH] [Minor] Improve errors reporting

---
 src/lua/lua_cryptobox.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/lua/lua_cryptobox.c b/src/lua/lua_cryptobox.c
index 425818977..85acde550 100644
--- a/src/lua/lua_cryptobox.c
+++ b/src/lua/lua_cryptobox.c
@@ -1284,8 +1284,13 @@ lua_cryptobox_hash_update (lua_State *L)
 		len = nlen;
 	}
 
-	if (h && !h->is_finished && data) {
-		rspamd_lua_hash_update (h, data, len);
+	if (h && data) {
+		if (!h->is_finished) {
+			rspamd_lua_hash_update (h, data, len);
+		}
+		else {
+			return luaL_error (L, "hash is already finalized");
+		}
 	}
 	else {
 		return luaL_error (L, "invalid arguments");
-- 
2.39.5