ANNOUNCEMENT: Live Wireshark University & Allegro Packets online APAC Wireshark Training Session
July 17th, 2024 | 10:00am-11:55am SGT (UTC+8) | Online

Wireshark-dev: Re: [Wireshark-dev] Lua Dissector <lua fake item>

From: Hadriel Kaplan <hadriel.kaplan@xxxxxxxxxx>
Date: Thu, 3 Apr 2014 23:46:31 -0400
Doesn’t happen for me, on Windows-XP (sorry I don’t have a newer windows to try it on right now - my main machine’s a Mac).

If you can’t show your real script, can you try downloading the “dissector.lua" one on the script examples wiki page, along with the "dns_port.pcap" file, and try those to see if you see the same thing with that?

The examples page is here:

http://wiki.wireshark.org/Lua/Examples

...and the first section of that page is labeled "A dissector tutorial script", with the download link for "dissector.lua" and a few paragraphs later the link for "dns_port.pcap”.

-hadriel

On Apr 3, 2014, at 11:04 PM, Matthew Parlane <parlane@xxxxxxxxx> wrote:

> Hey everyone,
> 
> I grabbed the latest Wireshark-win64-1.11.3-2224-gdf52f81.exe install.
> 
> Made a lua script for decoding a simple protocol header and I am getting:
> 
> User Datagram Protocol
> <lua fake item>
> Blah Protocol
> 
> Basically my lua is
> 
> 
>     local p_blah = Proto("blah","Blah Protocol");
>     blah.fields = {... }
>     function p_blah.dissector(buf, pinfo, root)
>       local t = root:add(p_blah, buf(0,BLAH_HEADER_SIZE))
>       t:add(f_item1, buf(0,4))
>       -- root:set_text("What?")
>     end
> 
> Now if I do the root:set_text("What?"), it changes from <lua fake item> to <Text item>
> 
> 
> User Datagram Protocol
> <Text item>
> Blah Protocol
> 
> 
> The Blah protocol decodes perfectly, so that's fine. Just curious how to correctly add the nodes so that it doesn't give this extra row of fake lua ?
> 
> 
> p.s. Sorry on light details, I can't share the specs.
> 
> Cheers,
> Matthew Parlane
> ___________________________________________________________________________
> Sent via:    Wireshark-dev mailing list <wireshark-dev@xxxxxxxxxxxxx>
> Archives:    http://www.wireshark.org/lists/wireshark-dev
> Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev
>             mailto:wireshark-dev-request@xxxxxxxxxxxxx?subject=unsubscribe