2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local st = require "util.stanza";
11 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
12 local secure_s2s_only = module:get_option("s2s_require_encryption");
14 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
15 local starttls_attr = { xmlns = xmlns_starttls };
16 local starttls_proceed = st.stanza("proceed", starttls_attr);
17 local starttls_failure = st.stanza("failure", starttls_attr);
18 local c2s_feature = st.stanza("starttls", starttls_attr);
19 local s2s_feature = st.stanza("starttls", starttls_attr);
20 if secure_auth_only then c2s_feature:tag("required"):up(); end
21 if secure_s2s_only then s2s_feature:tag("required"):up(); end
23 local global_ssl_ctx = prosody.global_ssl_ctx;
25 local host = hosts[module.host];
27 local function can_do_tls(session)
28 if session.type == "c2s_unauthed" then
29 return session.username and session.conn.starttls and host.ssl_ctx_in;
30 elseif session.type == "s2sin_unauthed" then
31 return session.to_host and session.conn.starttls and host.ssl_ctx_in;
37 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
38 local origin = event.origin;
39 if can_do_tls(origin) then
40 (origin.sends2s or origin.send)(starttls_proceed);
41 origin:reset_stream();
42 local host = origin.to_host or origin.host;
43 local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx;
44 origin.conn:starttls(ssl_ctx);
45 origin.log("info", "TLS negotiation started for %s...", origin.type);
46 origin.secure = false;
48 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
49 (origin.sends2s or origin.send)(starttls_failure);
55 -- Advertize stream feature
56 module:hook("stream-features", function(event)
57 local origin, features = event.origin, event.features;
58 if can_do_tls(origin) then
59 features:add_child(c2s_feature);
62 module:hook("s2s-stream-features", function(event)
63 local origin, features = event.origin, event.features;
64 if can_do_tls(origin) then
65 features:add_child(s2s_feature);
69 -- For s2sout connections, start TLS if we can
70 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
71 module:log("debug", "Received features element");
72 if session.conn.starttls and stanza:child_with_ns(xmlns_starttls) then
73 module:log("%s is offering TLS, taking up the offer...", session.to_host);
74 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
79 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza)
80 module:log("debug", "Proceeding with TLS on s2sout...");
81 session:reset_stream();
82 local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx;
83 session.conn:starttls(ssl_ctx, true);
84 session.secure = false;