Re: Tap Implementation

[Shawn Mayer <mayer_sr () wvwc edu>]

Thanks for the clarification. I'm looking to export/display the 
username, ip and message data, so maybe it would be easier to tap the 
main aim file rather than specifically the messaging, assuming the info 
that messaging dissects is accessible from the main file? Would the data 
I want already be in pinfo? Then I could probably keep the tap at the 
messaging level. Thanks for the help again, trying to get my head around 
how all of this goes together.

Shawn

On 4/7/2010 2:05 AM, Jaap Keuter wrote:
> Hi,
>
> Whatever you choose depends on what you want to do with the tapped information,
> so that is totally up to you.
>
> The syntax is correct. pinfo is a pointer to the packet info struct, containing
> all kinds of meta data on the frame. That's something (almost) every tap
> listener wants to have, so is included 'for your convenience'.
>
> Indeed that last data pointer is used to pass a struct of tap info to your listener.
>
> Thanks,
> Jaap
>
> Shawn Mayer wrote:
>    
> > Hello everyone,
> > I'm currently working on implementing a tap interface for the
> > aim_messaging dissector and have some questions. Do you think I'd be
> > better off tapping the main aim protocol? Right now I have it tapping
> > packets to the queue twice, at the end of dissect_aim_msg_outgoing and
> > dissect_aim_msg_incoming, in packet-aim_messaging.c. Is this the right
> > way to go about this? Is "tap_queue_packet(aim_messaging_tap, pinfo,
> > NULL);" the correct syntax? What is contained in pinfo? Should I make a
> > struct of the data I want sent to the tap and replace the NULL with
> > that? I've been following the README.tapping file and the tap-rcpstat.c
> > and am mildly confused. Thanks for all your assistance.
> >
> > Shawn
> >
> >      
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