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1<!-- This configuration file controls the systemwide message bus.
2     Add a system-local.conf and edit that rather than changing this
3     file directly. -->
4
5<!-- Note that there are any number of ways you can hose yourself
6     security-wise by screwing up this file; in particular, you
7     probably don't want to listen on any more addresses, add any more
8     auth mechanisms, run as a different user, etc. -->
9
10<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
11 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
12<busconfig>
13
14  <!-- Our well-known bus type, do not change this -->
15  <type>system</type>
16
17  <!-- Run as special user -->
18  <user>@DBUS_USER@</user>
19
20  <!-- Fork into daemon mode -->
21  <fork/>
22
23  <!-- Write a pid file -->
24  <pidfile>@DBUS_SYSTEM_PID_FILE@</pidfile>
25
26  <!-- Only allow socket-credentials-based authentication -->
27  <auth>EXTERNAL</auth>
28
29  <!-- Only listen on a local socket. (abstract=/path/to/socket
30       means use abstract namespace, don't really create filesystem
31       file; only Linux supports this. Use path=/whatever on other
32       systems.) -->
33  <listen>@DBUS_SYSTEM_BUS_DEFAULT_ADDRESS@</listen>
34
35  <policy context="default">
36    <!-- Deny everything then punch holes -->
37    <deny send_interface="*"/>
38    <deny receive_interface="*"/>
39    <deny own="*"/>
40    <!-- But allow all users to connect -->
41    <allow user="*"/>
42    <!-- Allow anyone to talk to the message bus -->
43    <!-- FIXME I think currently these allow rules are always implicit
44         even if they aren't in here -->
45    <allow send_destination="org.freedesktop.DBus"/>
46    <allow receive_sender="org.freedesktop.DBus"/>
47    <!-- valid replies are always allowed -->
48    <allow send_requested_reply="true"/>
49    <allow receive_requested_reply="true"/>
50  </policy>
51
52  <!-- Config files are placed here that among other things, punch
53       holes in the above policy for specific services. -->
54  <includedir>system.d</includedir>
55
56  <!-- This is included last so local configuration can override what's
57       in this standard file -->
58  <include ignore_missing="yes">system-local.conf</include>
59
60  <include if_selinux_enabled="yes" selinux_root_relative="yes">contexts/dbus_contexts</include>
61
62</busconfig>
63