D-BUS is licensed to you under your choice of the Academic Free
License version 2.1, or the GNU General Public License version 2.

Certain files (notably the _dbus_bindings directory) are instead licensed
under your choice of the Academic Free License version 2.1, or the GNU
Lesser General Public License version 2.1. Via clause 3 of the
LGPL, you may opt to apply the GPL version 2 to these files too.

Each source code file is marked with the proper copyright information.

The licenses are reproduced in the files COPYING.GPL-2, COPYING.LGPL-2.1
and COPYING.AFL-2.1.