Re: Retrieving dissection result from another dissector

[Pascal Quantin <pascal.quantin () gmail com>]

Hi Dario,

Le mar. 3 juil. 2018 à 17:11, Dario Lombardo <lomato () gmail com> a écrit :

> Actually I'm using the blob to pass data from the caller to the called. I
> guess it's a design flow to re-use this blob to have data back...

Simply add a parameter to your structure that is used to retrieve the
output data from the sub dissector:
struct {
    gint input_param1;
    guint32 input_param2;
    gint output_param;
} foo;

As the data parameter is not const in call_dissector_with_data() it should
work.

BR,
Pascal.


> On Tue, Jul 3, 2018 at 5:01 PM Richard Sharpe <realrichardsharpe () gmail com>
> wrote:
>
> > On Tue, Jul 3, 2018 at 7:55 AM, Dario Lombardo <lomato () gmail com> wrote:
> > > Hi
> > > In my dissector I need to call another dissector, and I'm using
> > > call_dissector_with_data(). I need to have back one result coming from
> > the
> > > dissection (an integer) to use in the calling dissector.
> > > How can I do that?
> >
> > You can pass in a void * pointer to a blob of data. Put the result in
> > that blob of data.
> >
> > --
> > Regards,
> > Richard Sharpe
> > (何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者)
> >
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>
> --
>
> Naima is online.
>
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