Re: Allow non-root user to access BLE DBus interface (systemd)

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> On Mar 2, 2017, at 12:01 AM, Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> wrote:
> 
> Hi Travis,
> 
> On Wed, Mar 1, 2017 at 7:27 PM, Travis Griggs <travisgriggs@xxxxxxxxx> wrote:
>> 
>>> On Mar 1, 2017, at 8:35 AM, Travis Griggs <travisgriggs@xxxxxxxxx> wrote:
>>> 
>>> This is not directly bluez/ble related, but rather derived from their use. I’ve been prototyping my BLE peripheral behavior running as root. Now I’m hardening things and partitioning the BLE app to a non-root user. My service now errors out with the following:
>>> 
>>> dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 2 matched rule
>>> s; type="method_call", sender=":1.6797" (uid=107 pid=17300 comm="/usr/bin/python3 -u /opt/pilot/bleMainloop ") interface="org.freedesktop.DBus.Objec
>>> tManager" member="GetManagedObjects" error name="(unset)" requested_reply="0" destination=":1.2" (uid=0 pid=1373 comm="/usr/lib/bluetooth/bluetoothd
>>> -d -E --noplugin=* “)
> 
> These interfaces have never been blocked, in fact that how
> bluetoothctl access BlueZ so you probably have something wrong with
> your configuration.
> 
>>> I see that there’s a bluetooth.conf in /etc/dbus-1/system.d. Do I need to tune something in this file to allow my app to still use the BLE DBus services? Any examples or pointers would be appreciated.
>>> 
>>> (sorry if this ended up a repeat post)

I was/am just using the stock debian (stretch) configuration. Except I modify the bluetooth.service to read:

    ExecStart=/usr/lib/bluetooth/bluetoothd -d -E --noplugin=*


In the end, rather than modifying any config files though, I found that if add my non-root user to the bluetooth group, that things work fine. The mentioned config file has an entry that hinted me in that direction.--
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