Re: [Barry-devel] Regarding Blackberry data recovery.

[Rakesh S. <rak...@gm...>]

Thanks for your help Chris. :-)

Regards
Rakesh S.

On Fri, Jan 6, 2012 at 5:00 PM, Chris Frey <cd...@fo...> wrote:

> On Fri, Jan 06, 2012 at 04:34:00PM +0530, Rakesh Sharnagate wrote:
> > Hi Chris,
> >
> > One last question I want to ask:
> > Which Initialization USB commands are required to extract records from
> any
> > database.
>
> They are pretty much all Bulk transfers, except for non-database things
> like
> setting the USB power levels.
>
> The Bulk transfers are arranged into packets, the format of which you can
> find in protostructs.h, including a socket number, size, command, etc.
> Some of these commands have sub-commands, and some command numbers
> are dynamic, such as tableCmd.
>
> For example, if you run 'btool -vd Memos' you'll see the USB traffic, for
> each stage: probe, mode selection (RIM Desktop), command code discovery
> (Database Access), DatabaseDatabase retrieval (a large block with a list
> of databases in the device... easy to find in the hex data), and then
> the dump of all records in the Memos database (using command 0x40 and
> the Database Access code number from the earlier command code discovery).
> You'll see sequence packets scattered throughout (command code 0x13).
>
> You can find the probe code in probe.cc.  Look at controller.cc and
> m_desktop.cc for the next stages.  But you'll have to match the packets
> against the right structs in protostructs.h to know what the bytes mean.
> Not all fields are understood yet, but enough to make it work.
>
> For database access, focus on the Packet struct in protostructs.h, and
> follow the other structs that are used in the unions.
>
> - Chris
>
>
>
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