-module:add_event_hook("s2s-stream-features",
- function (session, features)
- -- This hook is possibly called once per host (at least if the
- -- remote server does not specify a to/from.
- if session.to_host and session.conn.starttls and not features:child_with_ns(xmlns_starttls) then
- features:tag("starttls", starttls_attr):up();
- if secure_s2s_only then
- features:tag("required"):up():up();
- else
- features:up();
- end
- end
- end);
+local function can_do_tls(session)
+ if session.type == "c2s_unauthed" then
+ return session.conn.starttls and host.ssl_ctx_in;
+ elseif session.type == "s2sin_unauthed" and allow_s2s_tls then
+ return session.conn.starttls and host.ssl_ctx_in;
+ elseif session.direction == "outgoing" and allow_s2s_tls then
+ return session.conn.starttls and host.ssl_ctx;
+ end
+ return false;
+end
+
+-- Hook <starttls/>
+module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
+ local origin = event.origin;
+ if can_do_tls(origin) then
+ (origin.sends2s or origin.send)(starttls_proceed);
+ origin:reset_stream();
+ local host = origin.to_host or origin.host;
+ local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx;
+ origin.conn:starttls(ssl_ctx);
+ origin.log("debug", "TLS negotiation started for %s...", origin.type);
+ origin.secure = false;
+ else
+ origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
+ (origin.sends2s or origin.send)(starttls_failure);
+ origin:close();
+ end
+ return true;
+end);
+
+-- Advertize stream feature
+module:hook("stream-features", function(event)
+ local origin, features = event.origin, event.features;
+ if can_do_tls(origin) then
+ features:add_child(c2s_feature);
+ end
+end);
+module:hook("s2s-stream-features", function(event)
+ local origin, features = event.origin, event.features;
+ if can_do_tls(origin) then
+ features:add_child(s2s_feature);
+ end
+end);