mod_tls: Mark session as not secure before negotiating TLS

[prosody.git] / plugins / mod_tls.lua

diff --git a/plugins/mod_tls.lua b/plugins/mod_tls.lua
index af403dc9f9b02294d48685376359b98049739d53..cd4f3acf9749ee6345ef2e82ac01a1dfce49519e 100644 (file)
--- a/plugins/mod_tls.lua
+++ b/plugins/mod_tls.lua
@@ -1,27 +1,17 @@
--- Prosody IM v0.2
--- Copyright (C) 2008 Matthew Wild
--- Copyright (C) 2008 Waqas Hussain
+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
 -- 
--- This program is free software; you can redistribute it and/or
--- modify it under the terms of the GNU General Public License
--- as published by the Free Software Foundation; either version 2
--- of the License, or (at your option) any later version.
--- 
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
--- 
--- You should have received a copy of the GNU General Public License
--- along with this program; if not, write to the Free Software
--- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+-- 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 xmlns_stream = 'http://etherx.jabber.org/streams';
+local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
+
+local secure_auth_only = module:get_option("require_encryption");
 
 module:add_handler("c2s_unauthed", "starttls", xmlns_starttls,
                function (session, stanza)
@@ -30,16 +20,68 @@ module:add_handler("c2s_unauthed", "starttls", 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);
                
+module:add_handler("s2sin_unauthed", "starttls", xmlns_starttls,
+               function (session, stanza)
+                       if session.conn.starttls then
+                               session.sends2s(st.stanza("proceed", { xmlns = xmlns_starttls }));
+                               session:reset_stream();
+                               session.conn.starttls();
+                               session.log("info", "TLS negotiation started for incoming s2s...");
+                               session.secure = false;
+                       else
+                               -- FIXME: What reply?
+                               session.log("warn", "Attempt to start TLS, but TLS is not available on this s2s connection");
+                       end
+               end);
+
+
 local starttls_attr = { xmlns = xmlns_starttls };
 module:add_event_hook("stream-features", 
-               function (session, 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);
+
+module:add_event_hook("s2s-stream-features", 
+               function (session, features)
+                       -- This hook is possibly called once per host (at least if the
+                       -- remote server does not specify a to/from.
+                       if session.to_host and session.conn.starttls and not features:child_with_ns(xmlns_starttls) then
                                features:tag("starttls", starttls_attr):up();
+                               -- TODO: Make this optional :P
+                               --features:tag("required"):up():up();
                        end
                end);
+
+-- For s2sout connections, start TLS if we can
+module:hook_stanza(xmlns_stream, "features",
+               function (session, stanza)
+                       module:log("debug", "Received features element");
+                       if stanza:child_with_ns(xmlns_starttls) then
+                               module:log("%s is offering TLS, taking up the offer...", session.to_host);
+                               session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
+                               return true;
+                       end
+               end, 500);
+
+module:hook_stanza(xmlns_starttls, "proceed",
+               function (session, stanza)
+                       module:log("debug", "Proceeding with TLS on s2sout...");
+                       local format, to_host, from_host = string.format, session.to_host, session.from_host;
+                       session:reset_stream();
+                       session.conn.starttls(true);
+                       return true;
+               end);