From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 2 Apr 2021 14:37:31 +0000 (+0100)
Subject: [Minor] Lua_text: Add a hack to use several distinct fake texts
X-Git-Tag: 3.0~529
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69c4a64a428965c4d08ac8706d9c28c5473a8f8c;p=thirdparty%2Frspamd.git

[Minor] Lua_text: Add a hack to use several distinct fake texts
---

diff --git a/src/lua/lua_text.c b/src/lua/lua_text.c
index c90c2e6bfd..dde7e2c235 100644
--- a/src/lua/lua_text.c
+++ b/src/lua/lua_text.c
@@ -288,19 +288,26 @@ lua_check_text_or_string (lua_State * L, gint pos)
 		return ud ? (struct rspamd_lua_text *) ud : NULL;
 	}
 	else if (pos_type == LUA_TSTRING) {
-		/* Fake static lua_text */
-		static struct rspamd_lua_text fake_text;
+		/*
+		 * Fake static lua_text, we allow to use this function multiple times
+		 * by having a small array of static structures.
+		 */
+		static int cur_txt_idx = 0;
+		static struct rspamd_lua_text fake_text[4];
 		gsize len;
+		int sel_idx;
+
+		sel_idx = cur_txt_idx++ % G_N_ELEMENTS (fake_text);
+		fake_text[sel_idx].start = lua_tolstring (L, pos, &len);
 
-		fake_text.start = lua_tolstring (L, pos, &len);
 		if (len >= G_MAXUINT) {
 			return NULL;
 		}
 
-		fake_text.len = len;
-		fake_text.flags = RSPAMD_TEXT_FLAG_FAKE;
+		fake_text[sel_idx].len = len;
+		fake_text[sel_idx].flags = RSPAMD_TEXT_FLAG_FAKE;
 
-		return &fake_text;
+		return &fake_text[sel_idx];
 	}
 
 	return NULL;