From b0cf71db435fa0e010b1cc372f6b7ef834d7bb22 Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Sat, 22 Feb 2020 09:59:43 +0000
Subject: [PATCH] [Minor] Allow lua maps to process opaque texts

---
 src/lua/lua_map.c            | 21 ++++++++++++++++++---
 src/plugins/lua/settings.lua | 12 +++++++++---
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/src/lua/lua_map.c b/src/lua/lua_map.c
index 087478ccc..b279bacbd 100644
--- a/src/lua/lua_map.c
+++ b/src/lua/lua_map.c
@@ -129,6 +129,7 @@ static const struct luaL_reg maplib_m[] = {
 struct lua_map_callback_data {
 	lua_State *L;
 	gint ref;
+	gboolean opaque;
 	rspamd_fstring_t *data;
 	struct rspamd_lua_map *lua_map;
 };
@@ -442,7 +443,19 @@ lua_map_fin (struct map_cb_data *data, void **target)
 	}
 	else if (cbdata->data != NULL && cbdata->data->len != 0) {
 		lua_rawgeti (cbdata->L, LUA_REGISTRYINDEX, cbdata->ref);
-		lua_pushlstring (cbdata->L, cbdata->data->str, cbdata->data->len);
+
+		if (cbdata->opaque) {
+			lua_pushlstring (cbdata->L, cbdata->data->str, cbdata->data->len);
+		}
+		else {
+			struct rspamd_lua_text *t;
+
+			t = lua_newuserdata (cbdata->L, sizeof (*t));
+			t->flags = 0;
+			t->len = cbdata->data->len;
+			t->start = cbdata->data->str;
+		}
+
 		pmap = lua_newuserdata (cbdata->L, sizeof (void *));
 		*pmap = cbdata->lua_map;
 		rspamd_lua_setclass (cbdata->L, "rspamd{map}", -1);
@@ -493,14 +506,15 @@ lua_config_add_map (lua_State *L)
 	struct lua_map_callback_data *cbdata;
 	struct rspamd_lua_map *map, **pmap;
 	struct rspamd_map *m;
+	gboolean opaque_data = FALSE;
 	int cbidx = -1, ret;
 	GError *err = NULL;
 
 	if (cfg) {
 		if (!rspamd_lua_parse_table_arguments (L, 2, &err,
 				RSPAMD_LUA_PARSE_ARGUMENTS_DEFAULT,
-				"*url=O;description=S;callback=F;type=S",
-				&map_obj, &description, &cbidx, &type)) {
+				"*url=O;description=S;callback=F;type=S;opaque_data=B",
+				&map_obj, &description, &cbidx, &type, &opaque_data)) {
 			ret = luaL_error (L, "invalid table arguments: %s", err->message);
 			g_error_free (err);
 			if (map_obj) {
@@ -529,6 +543,7 @@ lua_config_add_map (lua_State *L)
 			cbdata->data = NULL;
 			cbdata->lua_map = map;
 			cbdata->ref = cbidx;
+			cbdata->opaque = opaque_data;
 
 			if ((m = rspamd_map_add_from_ucl (cfg, map_obj, description,
 					lua_map_read,
diff --git a/src/plugins/lua/settings.lua b/src/plugins/lua/settings.lua
index bc91bf4c8..7427e779d 100644
--- a/src/plugins/lua/settings.lua
+++ b/src/plugins/lua/settings.lua
@@ -1036,9 +1036,9 @@ end
 
 -- Parse settings map from the ucl line
 local settings_map_pool
-local function process_settings_map(string)
+local function process_settings_map(map_text)
   local parser = ucl.parser()
-  local res,err = parser:parse_string(string)
+  local res,err = parser:parse_string(map_text)
   if not res then
     rspamd_logger.warnx(rspamd_config, 'cannot parse settings map: ' .. err)
   else
@@ -1162,7 +1162,13 @@ local set_section = rspamd_config:get_all_opt("settings")
 
 if set_section and set_section[1] and type(set_section[1]) == "string" then
   -- Just a map of ucl
-  if not rspamd_config:add_map(set_section[1], "settings map", process_settings_map) then
+  local map_attrs = {
+    url = set_section[1],
+    description = "settings map",
+    callback = process_settings_map,
+    opaque_data = true
+  }
+  if not rspamd_config:add_map(map_attrs) then
     rspamd_logger.errx(rspamd_config, 'cannot load settings from %1', set_section)
   end
 elseif set_section and type(set_section) == "table" then
-- 
2.39.5