File

+
−module:set_global();
+
−
+
−local cert_verify_identity = require "util.x509".verify_identity;
+
−local NULL = {};
+
−local log = module._log;
+
−
+
−module:hook("s2s-check-certificate", function(event)
+
−	local session, host, cert = event.session, event.host, event.cert;
+
−	local conn = session.conn:socket();
+
−	local log = session.log or log;
+
−
+
−	if not cert then
+
−		log("warn", "No certificate provided by %s", host or "unknown host");
+
−		return;
+
−	end
+
−
+
−	local chain_valid, errors;
+
−	if conn.getpeerverification then
+
−		chain_valid, errors = conn:getpeerverification();
+
−	else
+
−		chain_valid, errors = false, { { "Chain verification not supported by this version of LuaSec" } };
+
−	end
+
−	-- Is there any interest in printing out all/the number of errors here?
+
−	if not chain_valid then
+
−		log("debug", "certificate chain validation result: invalid");
+
−		for depth, t in pairs(errors or NULL) do
+
−			log("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "))
+
−		end
+
−		session.cert_chain_status = "invalid";
+
−		session.cert_chain_errors = errors;
+
−	else
+
−		log("debug", "certificate chain validation result: valid");
+
−		session.cert_chain_status = "valid";
+
−
+
−		-- We'll go ahead and verify the asserted identity if the
+
−		-- connecting server specified one.
+
−		if host then
+
−			if cert_verify_identity(host, "xmpp-server", cert) then
+
−				session.cert_identity_status = "valid"
+
−			else
+
−				session.cert_identity_status = "invalid"
+
−			end
+
−			log("debug", "certificate identity validation result: %s", session.cert_identity_status);
+
−		end
+
−	end
+
−end, 509);
+
−