How to force a fix pin

How to force a fix pin

[Ed Tsang]

Hi, My application scan for devices, send file to it. But some device (blackberry) will request a pin. With the bluetoothd 4.51. bluetooth-applet will pop up and enter a pin. If de-install it, the bluetoothd will complain "No agent available for 0 request (pin_code_request?).". And the remote device failed to pair with a "default pin 0000".
Is there a way to force a default pin "0000".  look like /etc/bluetooth/pin is history.  Is there a simply work around.

Net Des



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Re: How to force a fix pin

[Nel D]

Hi ,


On Wed, Dec 9, 2009 at 3:45 AM, Ed Tsang <netdesign_98@yahoo.com> wrote:
> Hi, My application scan for devices, send file to it. But some device (blackberry) will request a pin. With the bluetoothd 4.51. bluetooth-applet will pop up and enter a pin. If de-install it, the bluetoothd will complain "No agent available for 0 request (pin_code_request?).". And the remote device failed to pair with a "default pin 0000".
> Is there a way to force a default pin "0000".  look like /etc/bluetooth/pin is history.  Is there a simply work around.
>
> Net Des
>

Do you have the sources of 4.51 ? . I remember a command line utility
named simple-agent in test folder ( the location might have changed)
which i had used to pair.

Hope this helps.

Thanks,
 Nel


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Re: How to force a fix pin

[Ralph Hempel]

Nel D wrote:
> Hi ,
> 
> 
> On Wed, Dec 9, 2009 at 3:45 AM, Ed Tsang <netdesign_98@yahoo.com> wrote:
>> Hi, My application scan for devices, send file to it. But some device (blackberry) will request a pin. With the bluetoothd 4.51. bluetooth-applet will pop up and enter a pin. If de-install it, the bluetoothd will complain "No agent available for 0 request (pin_code_request?).". And the remote device failed to pair with a "default pin 0000".
>> Is there a way to force a default pin "0000".  look like /etc/bluetooth/pin is history.  Is there a simply work around.
>>
>> Net Des

In the directory /var/lib/xx:yy:xx:yy:xx:yy/

where xx:yy:xx:yy:xx:yy is your Bluetooth interface MAC

you will either find or have to create two files:

pincodes
trusts

Assuming that your other device is aa:bb:aa:bb:aa:bb you
modify the files as follows:

In the pincodes file, add a line like this, replace 0000
with your desired pincode

aa:bb:aa:bb:aa:bb 0000

In the trusts file, put this:

aa:bb:aa:bb:aa:bb [all]

Which says the device can access all services (I think)

If the pairing is sucessful you will get a new
entry in the linkkeys file, and that key will then be
used in the future, so no more pairing is required.

I am currently investigating why (in 4.57) the linkkeys
and trusts entry of a successfully paired device are
sometimes deleted.

Ralph

Re: How to force a fix pin

[Ralph Hempel]

Ralph Hempel wrote:

> In the directory /var/lib/xx:yy:xx:yy:xx:yy/

Sorry, that's /var/lib/bluetooth/xx:yy:xx:yy:xx:yy/

Ralph

Re: How to force a fix pin

[Ed Tsang]

Ralph,Nel, 
Thanks for the hints.
Since I will need to use the same pin code for every devices and I will not know their address before hand. In the pincodes file could we use
* 0000 
I will try it out first.

Net Des


----- Original Message ----
From: Ralph Hempel <rhempel@hempeldesigngroup.com>
To: Nel D <newatlinux@gmail.com>
Cc: Ed Tsang <netdesign_98@yahoo.com>; Bluettooth Linux <linux-bluetooth@vger.kernel.org>
Sent: Wed, December 9, 2009 8:20:15 AM
Subject: Re: How to force a fix pin

Nel D wrote:
> Hi ,
> 
> 
> On Wed, Dec 9, 2009 at 3:45 AM, Ed Tsang <netdesign_98@yahoo.com> wrote:
>> Hi, My application scan for devices, send file to it. But some device (blackberry) will request a pin. With the bluetoothd 4.51. bluetooth-applet will pop up and enter a pin. If de-install it, the bluetoothd will complain "No agent available for 0 request (pin_code_request?).". And the remote device failed to pair with a "default pin 0000".
>> Is there a way to force a default pin "0000".  look like /etc/bluetooth/pin is history.  Is there a simply work around.
>>
>> Net Des

In the directory /var/lib/xx:yy:xx:yy:xx:yy/

where xx:yy:xx:yy:xx:yy is your Bluetooth interface MAC

you will either find or have to create two files:

pincodes
trusts

Assuming that your other device is aa:bb:aa:bb:aa:bb you
modify the files as follows:

In the pincodes file, add a line like this, replace 0000
with your desired pincode

aa:bb:aa:bb:aa:bb 0000

In the trusts file, put this:

aa:bb:aa:bb:aa:bb [all]

Which says the device can access all services (I think)

If the pairing is sucessful you will get a new
entry in the linkkeys file, and that key will then be
used in the future, so no more pairing is required.

I am currently investigating why (in 4.57) the linkkeys
and trusts entry of a successfully paired device are
sometimes deleted.

Ralph

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Re: How to force a fix pin

[Ralph Hempel]

Ed Tsang wrote:
> Ralph,Nel, 
> Thanks for the hints.
> Since I will need to use the same pin code for every devices and I will not know their address before hand. In the pincodes file could we use
> * 0000 
> I will try it out first.

Or, you could scan for new devices and then you'd know the MAC...

Ralph

Re: How to force a fix pin

[Ed Tsang]

Ralph, 
 Thanks for the suggestion.  
 I ended up changing the test/simple-agent and get it to return "0000". It pair ok with the fix pin now.

Ed


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