[Minor] Add method to find displayed urls

src/lua/lua_url.c

@@ -52,6 +52,7 @@ LUA_FUNCTION_DEF (url, to_table);
 LUA_FUNCTION_DEF (url, is_phished);
 LUA_FUNCTION_DEF (url, is_redirected);
 LUA_FUNCTION_DEF (url, is_obscured);
+LUA_FUNCTION_DEF (url, is_html_displayed);
 LUA_FUNCTION_DEF (url, get_phished);
 LUA_FUNCTION_DEF (url, get_tag);
 LUA_FUNCTION_DEF (url, get_tags);
@@ -74,6 +75,7 @@ static const struct luaL_reg urllib_m[] = {
 	LUA_INTERFACE_DEF (url, is_phished),
 	LUA_INTERFACE_DEF (url, is_redirected),
 	LUA_INTERFACE_DEF (url, is_obscured),
+	LUA_INTERFACE_DEF (url, is_html_displayed),
 	LUA_INTERFACE_DEF (url, get_phished),
 	LUA_INTERFACE_DEF (url, get_tag),
 	LUA_INTERFACE_DEF (url, get_tags),
@@ -316,6 +318,27 @@ lua_url_is_obscured (lua_State *L)
 	return 1;
 }
 
+
+/***
+ * @method url:is_html_displayed()
+ * Check whether URL is just displayed in HTML (e.g. NOT a real href)
+ * @return {boolean} `true` if URL is displayed only
+ */
+static gint
+lua_url_is_html_displayed (lua_State *L)
+{
+	struct rspamd_lua_url *url = lua_check_url (L, 1);
+
+	if (url != NULL) {
+		lua_pushboolean (L, url->url->flags & RSPAMD_URL_FLAG_HTML_DISPLAYED);
+	}
+	else {
+		lua_pushnil (L);
+	}
+
+	return 1;
+}
+
 /***
  * @method url:get_tag(tag)
  * Returns list of string for a specific tagname for an url