The original PHP version of this code was written by Geoffrey T. Dairiki
, and is used/adapted with his permission.
Copyright 2004 Geoffrey T. Dairiki
Copyright 2004-2016 Horde LLC (http://www.horde.org/)
See the enclosed file COPYING for license information (LGPL). If you did
not receive this file, see http://www.horde.org/licenses/lgpl21.