Software /
code /
prosody
File
plugins/mod_welcome.lua @ 12032:3db09eb4c43b
util.format: Ensure sanitation of strings passed to wrong format
Ie. log("debug", "%d", "\1\2\3") should not result in garbage.
Also optimizing for the common case of ASCII string passed to %s and
early returns everywhere.
Returning nil from a gsub callback keeps the original substring.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sat, 11 Dec 2021 13:30:34 +0100 |
parent | 8161:31938a0c398f |
child | 12977:74b9e05af71e |
line wrap: on
line source
-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local host = module:get_host(); local welcome_text = module:get_option_string("welcome_message", "Hello $username, welcome to the $host IM server!"); local st = require "util.stanza"; module:hook("user-registered", function (user) local welcome_stanza = st.message({ to = user.username.."@"..user.host, from = host }, welcome_text:gsub("$(%w+)", user)); module:send(welcome_stanza); module:log("debug", "Welcomed user %s@%s", user.username, user.host); end);