Mailing List Archive: About Dissector added with a "plugin" !

About Dissector added with a "plugin" !

Jun 8, 2006, 1:28 AM

Post #1 of 3 (2023 views)

Hi,

I'm developping an Ethereal plugin to add a dissector for a protocol.
This protocol has a field Mask that I would like to display in binary e.g.
Mask : 1100 1011 1010
But I can't find the solution that allows such a thing :

In proto.c, one have :

/** radix for decimal values, used in header_field_info.display */
typedef enum {
BASE_NONE, /**< none */
BASE_DEC, /**< decimal */
BASE_HEX, /**< hexadecimal */
BASE_OCT, /**< octal */
BASE_DEC_HEX, /**< decimal (hexadecimal) */
BASE_HEX_DEC /**< hexadecimal (decimal) */
} base_display_e;

But there is no BASE_BIN for example, in order to insert into (e.g.):
static hf_register_info hf[] = {
{ &hf_foo_pdu_type,
{ "FOO PDU Type","foo.type",
FT_UINT8, BASE_DEC, NULL, 0x0,
"", HFILL }
},
};

Has someone a solution for this problem without I have to modify ethereal
source code and rebuild it ?

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Re: About Dissector added with a "plugin" ! [ In reply to ]

ronniesahlberg at gmail

Jun 8, 2006, 1:56 AM

Post #2 of 3 (1927 views)

Permalink

Not exactly what you are asking for but you could try this:

(dissecting and displaying the top 12 bits of a 16 bit integer in a
somewhat binary representation)

{ &hf_foo,
{"Foo", "foo.foo", FT_UINT16, BASE_HEX, NULL, 0xfff0, "something", HFILL }},

I.e specifying a bitmask which will make ethereal decode it and display it as
XXXX XXXX XXXX ....

Probably not exactly what you want but maybe close enough?

On 6/8/06, kyan-ki kyan-ki <kyan-ki@hotmail.fr> wrote:
> Hi,
>
> I'm developping an Ethereal plugin to add a dissector for a protocol.
> This protocol has a field Mask that I would like to display in binary e.g.
> Mask : 1100 1011 1010
> But I can't find the solution that allows such a thing :
>
> In proto.c, one have :
>
> /** radix for decimal values, used in header_field_info.display */
> typedef enum {
> BASE_NONE, /**< none */
> BASE_DEC, /**< decimal */
> BASE_HEX, /**< hexadecimal */
> BASE_OCT, /**< octal */
> BASE_DEC_HEX, /**< decimal (hexadecimal) */
> BASE_HEX_DEC /**< hexadecimal (decimal) */
> } base_display_e;
>
> But there is no BASE_BIN for example, in order to insert into (e.g.):
> static hf_register_info hf[] = {
> { &hf_foo_pdu_type,
> { "FOO PDU Type","foo.type",
> FT_UINT8, BASE_DEC, NULL, 0x0,
> "", HFILL }
> },
> };
>
> Has someone a solution for this problem without I have to modify ethereal
> source code and rebuild it ?
>
> _________________________________________________________________
> Windows Live Mail : venez tester la version bêta !
> http://www.ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
>
> _______________________________________________
> Ethereal-dev mailing list
> Ethereal-dev@ethereal.com
> http://www.ethereal.com/mailman/listinfo/ethereal-dev
>
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Re: About Dissector added with a "plugin" ! [ In reply to ]

ronniesahlberg at gmail

Jun 8, 2006, 3:51 AM

Post #3 of 3 (1940 views)

Permalink

try with
FT_UINT32 and BASE_HEX
instead of
FT_UINT8 and BASE_DEC

On 6/8/06, kyan-ki kyan-ki <kyan-ki@hotmail.fr> wrote:
> I've already tried this solution previously but it was not right.
> My Mask is coded with 3 bytes (24 bits).
>
> So, I would like to have a display e.g. : 1010 1101 1111 1000 1011 1110 =
> Mask : .....
> I tried to mask with { "FOO PDU Type","foo.type",FT_UINT8, BASE_DEC, NULL,
> 0xFFFFFF,"", HFILL } but only the first 8 bits are displayed : 1010 1101.
>
> thanks for your support
>
>
> >From: "ronnie sahlberg" <ronniesahlberg@gmail.com>
> >To: "Ethereal development" <ethereal-dev@ethereal.com>
> >CC: kyan-ki@hotmail.fr
> >Subject: Re: About Dissector added with a "plugin" !
> >Date: Thu, 8 Jun 2006 08:56:17 +0000
> >
> >Not exactly what you are asking for but you could try this:
> >
> >(dissecting and displaying the top 12 bits of a 16 bit integer in a
> >somewhat binary representation)
> >
> >{ &hf_foo,
> >{"Foo", "foo.foo", FT_UINT16, BASE_HEX, NULL, 0xfff0, "something", HFILL
> >}},
> >
> >
> >I.e specifying a bitmask which will make ethereal decode it and display
> >it as
> >XXXX XXXX XXXX ....
> >
> >
> >Probably not exactly what you want but maybe close enough?
> >
> >
> >
> >
> >On 6/8/06, kyan-ki kyan-ki <kyan-ki@hotmail.fr> wrote:
> >>Hi,
> >>
> >>I'm developping an Ethereal plugin to add a dissector for a protocol.
> >>This protocol has a field Mask that I would like to display in binary e.g.
> >>Mask : 1100 1011 1010
> >>But I can't find the solution that allows such a thing :
> >>
> >>In proto.c, one have :
> >>
> >>/** radix for decimal values, used in header_field_info.display */
> >>typedef enum {
> >> BASE_NONE, /**< none */
> >> BASE_DEC, /**< decimal */
> >> BASE_HEX, /**< hexadecimal */
> >> BASE_OCT, /**< octal */
> >> BASE_DEC_HEX, /**< decimal (hexadecimal) */
> >> BASE_HEX_DEC /**< hexadecimal (decimal) */
> >>} base_display_e;
> >>
> >>But there is no BASE_BIN for example, in order to insert into (e.g.):
> >>static hf_register_info hf[] = {
> >> { &hf_foo_pdu_type,
> >> { "FOO PDU Type","foo.type",
> >> FT_UINT8, BASE_DEC, NULL, 0x0,
> >> "", HFILL }
> >> },
> >>};
> >>
> >>Has someone a solution for this problem without I have to modify ethereal
> >>source code and rebuild it ?
> >>
> >>_________________________________________________________________
> >>Windows Live Mail : venez tester la version bêta !
> >>http://www.ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
> >>
> >>_______________________________________________
> >>Ethereal-dev mailing list
> >>Ethereal-dev@ethereal.com
> >>http://www.ethereal.com/mailman/listinfo/ethereal-dev
> >>
>
> _________________________________________________________________
> Windows Live Messenger : venez tester la version bêta !
> http://www.ideas.live.com/programpage.aspx?versionId=0eccd94b-eb48-497c-8e60-c6313f7ebb73
>
>
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