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 c2s_require_encryption = module:get_option("c2s_require_encryption", module:get_option("require_encryption"));
13 local s2s_require_encryption = module:get_option("s2s_require_encryption");
14 local allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false;
15 local s2s_secure_auth = module:get_option("s2s_secure_auth");
17 if s2s_secure_auth and s2s_require_encryption == false then
18 module:log("warn", "s2s_secure_auth implies s2s_require_encryption, but s2s_require_encryption is set to false");
19 s2s_require_encryption = true;
22 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
23 local starttls_attr = { xmlns = xmlns_starttls };
24 local starttls_proceed = st.stanza("proceed", starttls_attr);
25 local starttls_failure = st.stanza("failure", starttls_attr);
26 local c2s_feature = st.stanza("starttls", starttls_attr);
27 local s2s_feature = st.stanza("starttls", starttls_attr);
28 if c2s_require_encryption then c2s_feature:tag("required"):up(); end
29 if s2s_require_encryption then s2s_feature:tag("required"):up(); end
31 local hosts = prosody.hosts;
32 local host = hosts[module.host];
34 local ssl_ctx_c2s, ssl_ctx_s2sout, ssl_ctx_s2sin;
35 local ssl_cfg_c2s, ssl_cfg_s2sout, ssl_cfg_s2sin;
38 local global = module:context("*");
39 local parent = module:context(module.host:match("%.(.*)$"));
41 local parent_ssl = parent:get_option("ssl");
42 local host_ssl = module:get_option("ssl", parent_ssl);
44 local global_c2s = global:get_option("c2s_ssl", NULL);
45 local parent_c2s = parent:get_option("c2s_ssl", NULL);
46 local host_c2s = module:get_option("c2s_ssl", parent_c2s);
48 local global_s2s = global:get_option("s2s_ssl", NULL);
49 local parent_s2s = parent:get_option("s2s_ssl", NULL);
50 local host_s2s = module:get_option("s2s_ssl", parent_s2s);
52 ssl_ctx_c2s, ssl_cfg_c2s = create_context(host.host, "server", host_c2s, host_ssl, global_c2s); -- for incoming client connections
53 if not ssl_ctx_c2s then module:log("error", "Error creating context for c2s: %s", ssl_cfg_c2s); end
55 ssl_ctx_s2sout, ssl_cfg_s2sout = create_context(host.host, "client", host_s2s, host_ssl, global_s2s); -- for outgoing server connections
56 if not ssl_ctx_s2sout then module:log("error", "Error creating contexts for s2sout: %s", ssl_cfg_s2sin); end
58 ssl_ctx_s2sin, ssl_cfg_s2sin = create_context(host.host, "server", host_s2s, host_ssl, global_s2s); -- for incoming server connections
59 if not ssl_ctx_s2sin then module:log("error", "Error creating contexts for s2sin: %s", ssl_cfg_s2sin); end
62 local function can_do_tls(session)
63 if not session.conn.starttls then
65 elseif session.ssl_ctx then
68 if session.type == "c2s_unauthed" then
69 session.ssl_ctx = ssl_ctx_c2s;
70 session.ssl_cfg = ssl_cfg_c2s;
71 elseif session.type == "s2sin_unauthed" and allow_s2s_tls then
72 session.ssl_ctx = ssl_ctx_s2sin;
73 session.ssl_cfg = ssl_cfg_s2sin;
74 elseif session.direction == "outgoing" and allow_s2s_tls then
75 session.ssl_ctx = ssl_ctx_s2sout;
76 session.ssl_cfg = ssl_cfg_s2sout;
80 return session.ssl_ctx;
84 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
85 local origin = event.origin;
86 if can_do_tls(origin) then
87 (origin.sends2s or origin.send)(starttls_proceed);
88 origin:reset_stream();
89 origin.conn:starttls(origin.ssl_ctx);
90 origin.log("debug", "TLS negotiation started for %s...", origin.type);
91 origin.secure = false;
93 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
94 (origin.sends2s or origin.send)(starttls_failure);
100 -- Advertize stream feature
101 module:hook("stream-features", function(event)
102 local origin, features = event.origin, event.features;
103 if can_do_tls(origin) then
104 features:add_child(c2s_feature);
107 module:hook("s2s-stream-features", function(event)
108 local origin, features = event.origin, event.features;
109 if can_do_tls(origin) then
110 features:add_child(s2s_feature);
114 -- For s2sout connections, start TLS if we can
115 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
116 module:log("debug", "Received features element");
117 if can_do_tls(session) and stanza:get_child("starttls", xmlns_starttls) then
118 module:log("debug", "%s is offering TLS, taking up the offer...", session.to_host);
119 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
124 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza)
125 module:log("debug", "Proceeding with TLS on s2sout...");
126 session:reset_stream();
127 session.conn:starttls(session.ssl_ctx);
128 session.secure = false;