-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local config = require "core.configmanager"; local create_context = require "core.certmanager".create_context; 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 allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false; 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 local global_ssl_ctx = prosody.global_ssl_ctx; local host = hosts[module.host]; 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); -- For s2sout connections, start TLS if we can 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("debug", "%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); session.secure = false; return true; end); function module.load() local ssl_config = config.rawget(module.host, "core", "ssl"); if not ssl_config then local base_host = module.host:match("%.(.*)"); ssl_config = config.get(base_host, "core", "ssl"); end host.ssl_ctx = create_context(host.host, "client", ssl_config); -- for outgoing connections host.ssl_ctx_in = create_context(host.host, "server", ssl_config); -- for incoming connections end function module.unload() host.ssl_ctx = nil; host.ssl_ctx_in = nil; end