-- Copyright (C) 2008-2009 Matthew Wild

-- Copyright (C) 2008-2009 Waqas Hussain

-- 

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local st = require "util.stanza";

local xmlns_starttls ='urn:ietf:params:xml:ns:xmpp-tls';

local config = require "core.configmanager";

local secure_auth_only = config.get("*", "core", "require_encryption");

module:add_handler("c2s_unauthed", "starttls", xmlns_starttls,

		function (session, stanza)

			if session.conn.starttls then

				session.send(st.stanza("proceed", { xmlns = xmlns_starttls }));

				session:reset_stream();

				session.conn.starttls();

				session.log("info", "TLS negotiation started...");

				session.secure = false;

			else

				-- FIXME: What reply?

				session.log("warn", "Attempt to start TLS, but TLS is not available on this connection");

			end

		end);

local starttls_attr = { xmlns = xmlns_starttls };

module:add_event_hook("stream-features", 

		function (session, features)												

			if session.conn.starttls then

				features:tag("starttls", starttls_attr);

				if secure_auth_only then

					features:tag("required"):up():up();

				else

					features:up();

				end

			end

		end);