mod_tls: Merged duplicate code.

[prosody.git] / plugins / mod_tls.lua

diff --git a/plugins/mod_tls.lua b/plugins/mod_tls.lua
index b382f318dea9b060722513645d4c57930904e9d1..9b7bc41518e1699e091c7f5c6fec16827d418ffa 100644 (file)
--- a/plugins/mod_tls.lua
+++ b/plugins/mod_tls.lua
@@ -1,4 +1,4 @@
--- Prosody IM v0.4
+-- Prosody IM
 -- Copyright (C) 2008-2009 Matthew Wild
 -- Copyright (C) 2008-2009 Waqas Hussain
 -- 
@@ -6,29 +6,86 @@
 -- COPYING file in the source package for more information.
 --
 
+local st = require "util.stanza";
 
+local xmlns_stream = 'http://etherx.jabber.org/streams';
+local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
 
-local st = require "util.stanza";
+local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
+local secure_s2s_only = module:get_option("s2s_require_encryption");
+
+local global_ssl_ctx = prosody.global_ssl_ctx;
+
+function starttls_handler(session, stanza)
+       if session.conn.starttls then
+               (session.sends2s or session.send)(st.stanza("proceed", { xmlns = xmlns_starttls }));
+               session:reset_stream();
+               local host = session.to_host or session.host;
+               local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx;
+               session.conn:starttls(ssl_ctx);
+               session.log("info", "TLS negotiation started for %s...", session.type);
+               session.secure = false;
+       else
+               -- FIXME: What reply?
+               session.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", session.type);
+       end
+end
+
+module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
+       local origin, stanza = event.origin, event.stanza;
+       if origin.type == "c2s_unauthed" or origin.type == "s2sin_unauthed" then
+               starttls_handler(origin, stanza);
+       else
+               -- FIXME: What reply?
+               origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
+       end
+       return true;
+end);
 
-local xmlns_starttls ='urn:ietf:params:xml:ns:xmpp-tls';
 
-module:add_handler("c2s_unauthed", "starttls", xmlns_starttls,
-               function (session, stanza)
-                       if session.conn.starttls then
-                               session.send(st.stanza("proceed", { xmlns = xmlns_starttls }));
-                               session:reset_stream();
-                               session.conn.starttls();
-                               session.log("info", "TLS negotiation started...");
-                       else
-                               -- FIXME: What reply?
-                               session.log("warn", "Attempt to start TLS, but TLS is not available on this connection");
-                       end
-               end);
-               
 local starttls_attr = { xmlns = xmlns_starttls };
 module:add_event_hook("stream-features", 
-               function (session, features)                                                                                            
-                       if session.conn.starttls then
+               function (session, features)
+                       if not session.username and 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:hook("s2s-stream-features", 
+               function (data)
+                       local session, features = data.session, data.features;
+                       if session.to_host and session.type ~= "s2sin" and session.conn.starttls then
                                features:tag("starttls", starttls_attr):up();
+                               if secure_s2s_only then
+                                       features:tag("required"):up():up();
+                               else
+                                       features:up();
+                               end
+                       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 session.conn.starttls and 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...");
+                       session:reset_stream();
+                       local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx;
+                       session.conn:starttls(ssl_ctx, true);
+                       session.secure = false;
+                       return true;
                end);