local _ENV = nil;

-- luacheck: std none

local function external(self, message)

	message = saslprep(message);

	local state

	self.username, state = self.profile.external(message);

	if state == false then

		return "failure", "account-disabled";

	elseif state == nil  then

		return "failure", "not-authorized";

	elseif state == "expired" then

		return "false", "credentials-expired";

	end

	return "success";

end

local function init(registerMechanism)

	registerMechanism("EXTERNAL", {"external"}, external);

end

return {

	init = init;

}