2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local create_context = require "core.certmanager".create_context;
10 local st = require "util.stanza";
12 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
13 local secure_s2s_only = module:get_option("s2s_require_encryption");
14 local allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false;
16 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
17 local starttls_attr = { xmlns = xmlns_starttls };
18 local starttls_proceed = st.stanza("proceed", starttls_attr);
19 local starttls_failure = st.stanza("failure", starttls_attr);
20 local c2s_feature = st.stanza("starttls", starttls_attr);
21 local s2s_feature = st.stanza("starttls", starttls_attr);
22 if secure_auth_only then c2s_feature:tag("required"):up(); end
23 if secure_s2s_only then s2s_feature:tag("required"):up(); end
25 local global_ssl_ctx = prosody.global_ssl_ctx;
27 local host = hosts[module.host];
29 local function can_do_tls(session)
30 if session.type == "c2s_unauthed" then
31 return session.conn.starttls and host.ssl_ctx_in;
32 elseif session.type == "s2sin_unauthed" and allow_s2s_tls then
33 return session.conn.starttls and host.ssl_ctx_in;
34 elseif session.direction == "outgoing" and allow_s2s_tls then
35 return session.conn.starttls and host.ssl_ctx;
41 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
42 local origin = event.origin;
43 if can_do_tls(origin) then
44 (origin.sends2s or origin.send)(starttls_proceed);
45 origin:reset_stream();
46 local host = origin.to_host or origin.host;
47 local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx;
48 origin.conn:starttls(ssl_ctx);
49 origin.log("info", "TLS negotiation started for %s...", origin.type);
50 origin.secure = false;
52 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
53 (origin.sends2s or origin.send)(starttls_failure);
59 -- Advertize stream feature
60 module:hook("stream-features", function(event)
61 local origin, features = event.origin, event.features;
62 if can_do_tls(origin) then
63 features:add_child(c2s_feature);
66 module:hook("s2s-stream-features", function(event)
67 local origin, features = event.origin, event.features;
68 if can_do_tls(origin) then
69 features:add_child(s2s_feature);
73 -- For s2sout connections, start TLS if we can
74 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
75 module:log("debug", "Received features element");
76 if can_do_tls(session) and stanza:child_with_ns(xmlns_starttls) then
77 module:log("%s is offering TLS, taking up the offer...", session.to_host);
78 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
83 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza)
84 module:log("debug", "Proceeding with TLS on s2sout...");
85 session:reset_stream();
86 local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx;
87 session.conn:starttls(ssl_ctx);
88 session.secure = false;
92 function module.load()
93 local ssl_config = module:get_option("ssl");
94 host.ssl_ctx = create_context(host, "client", ssl_config); -- for outgoing connections
95 host.ssl_ctx_in = create_context(host, "server", ssl_config); -- for incoming connections
98 function module.unload()
100 host.ssl_ctx_in = nil;