local st = require "util.stanza";
-local xmlns_stream = 'http://etherx.jabber.org/streams';
-local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
-
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 allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false;
-local host = hosts[module.host];
-
+local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
local starttls_attr = { xmlns = xmlns_starttls };
+local starttls_proceed = st.stanza("proceed", starttls_attr);
+local starttls_failure = st.stanza("failure", starttls_attr);
+local c2s_feature = st.stanza("starttls", starttls_attr);
+local s2s_feature = st.stanza("starttls", starttls_attr);
+if secure_auth_only then c2s_feature:tag("required"):up(); end
+if secure_s2s_only then s2s_feature:tag("required"):up(); end
---- Client-to-server TLS handling
-module:add_handler("c2s_unauthed", "starttls", xmlns_starttls,
- function (session, stanza)
- if session.conn.starttls and host.ssl_ctx_in then
- session.send(st.stanza("proceed", starttls_attr));
- session:reset_stream();
- if session.host and hosts[session.host].ssl_ctx_in then
- session.conn.set_sslctx(hosts[session.host].ssl_ctx_in);
- end
- session.conn.starttls();
- session.log("info", "TLS negotiation started...");
- session.secure = false;
- else
- session.log("warn", "Attempt to start TLS, but TLS is not available on this connection");
- (session.sends2s or session.send)(st.stanza("failure", starttls_attr));
- session:close();
- end
- end);
+local global_ssl_ctx = prosody.global_ssl_ctx;
-module:add_event_hook("stream-features",
- function (session, features)
- if 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);
----
+local host = hosts[module.host];
--- Stop here if the user doesn't want to allow s2s encryption
-if module:get_option("s2s_allow_encryption") == false then
- return;
+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" then
++ elseif session.type == "s2sin_unauthed" and allow_s2s_tls then
+ return session.conn.starttls and host.ssl_ctx_in;
- elseif session.direction == "outgoing" then
++ elseif session.direction == "outgoing" and allow_s2s_tls then
+ return session.conn.starttls and host.ssl_ctx;
+ end
+ return false;
end
---- Server-to-server TLS handling
-module:add_handler("s2sin_unauthed", "starttls", xmlns_starttls,
- function (session, stanza)
- if session.conn.starttls and host.ssl_ctx_in then
- session.sends2s(st.stanza("proceed", starttls_attr));
- session:reset_stream();
- if session.to_host and hosts[session.to_host].ssl_ctx_in then
- session.conn.set_sslctx(hosts[session.to_host].ssl_ctx_in);
- end
- session.conn.starttls();
- session.log("info", "TLS negotiation started for incoming s2s...");
- session.secure = false;
- else
- session.log("warn", "Attempt to start TLS, but TLS is not available on this s2s connection");
- (session.sends2s or session.send)(st.stanza("failure", starttls_attr));
- session:close();
- end
- 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("info", "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);
-module:hook("s2s-stream-features",
- function (data)
- local session, features = data.session, data.features;
- if session.to_host and session.conn.starttls then
- features:tag("starttls", starttls_attr);
- if secure_s2s_only then
- features:tag("required"):up():up();
- else
- features:up();
- end
- end
- 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);
-- 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("http://etherx.jabber.org/streams", "features", function (session, stanza)
+ module:log("debug", "Received features element");
+ if can_do_tls(session) 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...");
- local format, to_host, from_host = string.format, session.to_host, session.from_host;
- local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx;
- session.conn.set_sslctx(ssl_ctx);
- session:reset_stream();
- session.conn.starttls(true);
- session.secure = false;
- return true;
- end);
+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);
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