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.conn.starttls and host.ssl_ctx_in;
30 elseif session.type == "s2sin_unauthed" then
31 return session.conn.starttls and host.ssl_ctx_in;
32 elseif session.direction == "outgoing" then
33 return session.conn.starttls and host.ssl_ctx;
39 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
40 local origin = event.origin;
41 if can_do_tls(origin) then
42 (origin.sends2s or origin.send)(starttls_proceed);
43 origin:reset_stream();
44 local host = origin.to_host or origin.host;
45 local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx;
46 origin.conn:starttls(ssl_ctx);
47 origin.log("info", "TLS negotiation started for %s...", origin.type);
48 origin.secure = false;
50 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
51 (origin.sends2s or origin.send)(starttls_failure);
57 -- Advertize stream feature
58 module:hook("stream-features", function(event)
59 local origin, features = event.origin, event.features;
60 if can_do_tls(origin) then
61 features:add_child(c2s_feature);
64 module:hook("s2s-stream-features", function(event)
65 local origin, features = event.origin, event.features;
66 if can_do_tls(origin) then
67 features:add_child(s2s_feature);
71 -- For s2sout connections, start TLS if we can
72 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
73 module:log("debug", "Received features element");
74 if can_do_tls(session) and stanza:child_with_ns(xmlns_starttls) then
75 module:log("%s is offering TLS, taking up the offer...", session.to_host);
76 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
81 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza)
82 module:log("debug", "Proceeding with TLS on s2sout...");
83 session:reset_stream();
84 local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx;
85 session.conn:starttls(ssl_ctx, true);
86 session.secure = false;