Re: [Bluez-users] Delete, write and read link keys using functions in hci.c

["Ståle Andreas Kleppe" <staale.kleppe@gmail.com>]

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On 12/21/06, Marcel Holtmann <marcel@holtmann.org> wrote:
>
> Hi Stale,
>
> > Working on my Master's I want to be able to delete, write and read the
> > link keys associated with a paired device. I found the functions
> >
> > int hci_read_stored_link_key(int dd, bdaddr_t *bdaddr, uint8_t all,
> > int to)
> > int hci_write_stored_link_key(int dd, bdaddr_t *bdaddr, uint8_t *key,
> > int to)
> > int hci_delete_stored_link_key(int dd, bdaddr_t *bdaddr, uint8_t all,
> > int to)
> >
> > in hci.c and tried to use the delete-function. It seems to work, as
> > the function call returns 0, indicating that no problems occured.
> > However, the link key still appears
> > in /var/libs/bluetooth/BD_ADDR/linkkeys, and a following
> > authentication is still successfull.
> > Hcidump reports this:
> > < HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7
> >     bdaddr 00:09:DD:60:02:45 all 0
> > > HCI Event: Command Complete (0x0e) plen 4
> >     Delete Stored Link Key (0x03|0x0012) ncmd 1
> >     status 0x11 deleted 2525
> >     Error: Unsupported Feature or Parameter Value
> >
> > I guess it might be the value of parameter "all". I didn't know what
> > it is, so I tried with 0 and 1 (apperently not correct). Anyone knows
> > what this parameter of type uint8_t is for? I thought it might be like
> > a "boolean" variable, instructing deletion of ALL the associated link
> > keys. Am I far off?
> >
> > Another thing, about the hci_read_stored_link_key function. Is the key
> > returned as an int-value or by some other means? I'm a bit confused
> > about this matter..
>
> all these functions deal with the link keys stored on the chip. The
> default operation of BlueZ is not to store these link keys on the
> Bluetooth chip itself. Have a look at the D-Bus API for BlueZ. The
> methods ListBondings() and RemoveBonding() give you what you actually
> need.
>
> Regards
>
> Marcel


Thank you so much! Really appreciate it!
You have no idea how long I've been trying to solve this one! I'll take a
look at D-Bus.

Regards

Staale

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