From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Wed, 18 Nov 2020 17:50:19 +0000 (+0000)
Subject: [Fix] Fix off-by-one with init check
X-Git-Tag: 2.7~134
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=87ef9084fbc26218762f7b9a90522507543d142a;p=rspamd.git

[Fix] Fix off-by-one with init check
---

diff --git a/src/lua/lua_text.c b/src/lua/lua_text.c
index 99b8b8151..dbbba9838 100644
--- a/src/lua/lua_text.c
+++ b/src/lua/lua_text.c
@@ -1358,7 +1358,7 @@ lua_text_find (lua_State *L)
 			init = relative_pos_start (lua_tointeger (L, 3), t->len);
 		}
 
-		if (init >= t->len) {
+		if (init > t->len) {
 			return luaL_error (L, "invalid arguments to find: init too large");
 		}
 
diff --git a/test/lua/unit/rspamd_text.lua b/test/lua/unit/rspamd_text.lua
index 4e3a5e8e7..3e6d0fff7 100644
--- a/test/lua/unit/rspamd_text.lua
+++ b/test/lua/unit/rspamd_text.lua
@@ -37,6 +37,8 @@ context("Rspamd_text:find() test", function()
     {{'foobarfoo', 'bar'}, {4, 6}},
     {{'foobarfoo', 'baz'}, nil},
     {{'foobarfoo', 'rfoo'}, {6, 9}},
+    {{'foo', 'bar'}, nil},
+    {{'x', 'xxxx'}, nil},
   }
 
   for _, case in ipairs(cases) do