Re: Can a Lua dissector access Wireshark preferences?

[David Aldrich <david.aldrich.ntml () gmail com>]

Thanks for your help.

On Thu, Aug 30, 2018 at 6:39 PM Jeff Morriss <jeff.morriss.ws () gmail com>
wrote:

> For the preference side of it see:
>
> https://wiki.wireshark.org/LuaAPI/Pref
>
> On Thu, Aug 30, 2018 at 12:43 PM Maynard, Chris <
> Christopher.Maynard () igt com> wrote:
>
> > If you look at the documentation for ProtoField.new and friends[1], you
> > can see that there’s a “*mask*” argument.  That specifies how many bits
> > applies to this field.
> >
> >
> >
> > So for example, below there are 2 fields, field1 is the upper nibble of a
> > byte, field2 is the lower nibble of a byte:
> >
> >
> >
> > local foo_field1 = ProtoField.uint8("foo.field1", "Field1", base.DEC,
> > nil, 0xf0)
> >
> > local foo_field2 = ProtoField.uint8("foo.field2", "Field2", base.DEC,
> > nil, 0x0f)
> >
> >
> >
> > - Chris
> >
> >
> >
> > [1]:
> > https://www.wireshark.org/docs/wsdg_html_chunked/lua_module_Proto.html#lua_class_ProtoField
> >
> >
> >
> >
> >
> > *From:* Wireshark-dev [mailto:wireshark-dev-bounces () wireshark org] *On
> > Behalf Of *David Aldrich
> > *Sent:* Thursday, August 30, 2018 11:51 AM
> > *To:* wireshark-dev () wireshark org
> > *Subject:* [Wireshark-dev] Can a Lua dissector access Wireshark
> > preferences?
> >
> >
> >
> > Hi
> >
> >
> >
> > For my lua dissector, I want to be able to specify the bit width of a
> > data field using a Wireshark Preference.
> >
> >
> >
> > Is that possible?  If so, where would I find some help on how to do it?
> >
> >
> >
> > Best regards
> >
> >
> >
> > David
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