[Bluez-users] accessing info on paired devices

[Bluez-users] accessing info on paired devices

[Pall Thayer]

Hi,
I'm working on a little project that would have to automatically scan 
for bluetooth devices (using a little perl script) and then attempt to 
connect to them. However, I would prefer if it would only attempt to 
connect to devices that have already been paired with the computer (via 
bluetooth usb-dongle) and ignore discovered devices that have not been 
paired. So, how can I find out which of the discovered devices have been 
paired?

Pall Thayer

-- 
_______________________________
Pall Thayer
artist/teacher
http://www.this.is/pallit
http://pallit.lhi.is/panse
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Re: [Bluez-users] accessing info on paired devices

[Marcel Holtmann]

Hi Pall,

> I'm working on a little project that would have to automatically scan 
> for bluetooth devices (using a little perl script) and then attempt to 
> connect to them. However, I would prefer if it would only attempt to 
> connect to devices that have already been paired with the computer (via 
> bluetooth usb-dongle) and ignore discovered devices that have not been 
> paired. So, how can I find out which of the discovered devices have been 
> paired?

if there exists a link key for this device then they are paired, but the
problem is that security mode 1 not demands to pair two devices.

Regards

Marcel




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Re: [Bluez-users] accessing info on paired devices

[Pall Thayer]

But the link key is in binary form so I can't read it. What I've been 
doing is just sending a single l2ping to each of the discovered devices, 
the ones that are paired and authorized respond, the others time-out and 
are eventually ignored. The only problem is that I end up with a stack 
of PIN request pop-ups for the ones that aren't paired and authorized. 
Not a big deal but somewhat annoying. I tried playing around with the 
security settings in hcid.conf but nothing I did managed to avoid the 
PIN request pop-up.

Pall

Marcel Holtmann wrote:
> Hi Pall,
> 
> 
>>I'm working on a little project that would have to automatically scan 
>>for bluetooth devices (using a little perl script) and then attempt to 
>>connect to them. However, I would prefer if it would only attempt to 
>>connect to devices that have already been paired with the computer (via 
>>bluetooth usb-dongle) and ignore discovered devices that have not been 
>>paired. So, how can I find out which of the discovered devices have been 
>>paired?
> 
> 
> if there exists a link key for this device then they are paired, but the
> problem is that security mode 1 not demands to pair two devices.
> 
> Regards
> 
> Marcel
> 
> 

-- 
_______________________________
Pall Thayer
artist/teacher
http://www.this.is/pallit
http://pallit.lhi.is/panse
_______________________________

Re: [Bluez-users] accessing info on paired devices

[Marcel Holtmann]

Hi Pall,

> But the link key is in binary form so I can't read it. What I've been 
> doing is just sending a single l2ping to each of the discovered devices, 
> the ones that are paired and authorized respond, the others time-out and 
> are eventually ignored. The only problem is that I end up with a stack 
> of PIN request pop-ups for the ones that aren't paired and authorized. 
> Not a big deal but somewhat annoying. I tried playing around with the 
> security settings in hcid.conf but nothing I did managed to avoid the 
> PIN request pop-up.

we will change the link key file to be ASCII, but you should understand
the three security modes of Bluetooth. I think you put your device into
security mode 3 and this is bad unless you really know what you are
doing.

Regards

Marcel




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