Change the dbus policy file to only allow root applications to receive
signals from wpa_supplicant. This keeps WPS Credentials data secret
from non-root listeners.
<allow send_destination="fi.w1.wpa_supplicant1"/>
<allow send_interface="fi.w1.wpa_supplicant1"/>
-
+ <allow receive_sender="fi.w1.wpa_supplicant1" receive_type="signal"/>
</policy>
<policy context="default">
<deny own="fi.epitest.hostap.WPASupplicant"/>
<deny own="fi.w1.wpa_supplicant1"/>
<deny send_destination="fi.w1.wpa_supplicant1"/>
<deny send_interface="fi.w1.wpa_supplicant1"/>
+ <deny receive_sender="fi.w1.wpa_supplicant1" receive_type="signal"/>
</policy>
</busconfig>