Wireshark · Wireshark-dev: Re: [Wireshark-dev] Plugin development on Windows...

[Jaap Keuter <jaap.keuter@xxxxxxxxx>]

Hi Tobias,

Take a look at the Wireshark Developer Guide, there is an extensive
description how to setup a development environment on Windows. Just follow
the steps and your underway.

Thanx,
Jaap

On Sun, 1 Oct 2006, Tobias Erichsen wrote:

> Well I guess that coding a plugin (especially if the protocol is not too
> complex) will be not that hard.
>
> What I find rather complex to set up the environement to be able to compile
> a plugin at all...
>
> Do I need to compile Wireshark first to be able to compile plugins-dlls?
> What kind of additional libraries & include-files do I need on top of
> the etheral-source to be able to compile my own-plugin dll?
>
> I would guess that quite a few more protocol dissectors/plugins would
> be written if this process would be a bit easier.  I guess a lot of
> people are just repelled by how much they must do first, just to dissect
> a couple of octets and display their content in legible form...
>
> Tobias
>
> > -----Urspr??ngliche Nachricht-----
> > Von: wireshark-dev-bounces@xxxxxxxxxxxxx
> > [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] Im Auftrag von
> > Jaap Keuter
> > Gesendet: Sonntag, 1. Oktober 2006 07:48
> > An: Developer support list for Wireshark
> > Betreff: Re: [Wireshark-dev] Question concerning some
> > specific protocol... [heur]
> >
> > Hi,
> >
> > Ahhh, now it's getting simple. Just create a heuristic
> > dissector for your proprietary protocol. It DOES work by
> > recognition of (part of) content.
> > For RTP you'll have to enable the preference "Try to decode
> > RTP outside of conversations". You can look in the RTP
> > dissector how it's done and use that same method in your own
> > dissector.
> >
> > Thanx,
> > Jaap
> >
> > On Sat, 30 Sep 2006, Tobias Erichsen wrote:
> >
> > > The problem is that the port is not fix - the protocol(s)
> > may run on
> > > any ports.
> > >
> > > Are protocols that are recognized automatically by Wireshark always
> > > recognized by the port, not be the content of the datagrams?
> > >
> > > I know that I can go on a sniffed packet and say "decode
> > as" selecting
> > > the protocol manually, but it would be cool to let wireshark/my
> > > protocol plugin find it out automatically if it finds any
> > packets that
> > > are encoded according to the proprietary protocol and as
> > soon as this
> > > fact ist established, all packets for this udp-port-tuple will be
> > > decoded by my plugin, even though some of the packets won't
> > match the
> > > proprietary signature (in this case I would know that it is
> > RTP-data
> > > and decode accordingly)
> > >
> > > Tobias
> > >
> > > > -----Urspr????ngliche Nachricht-----
> > > > Von: wireshark-dev-bounces@xxxxxxxxxxxxx
> > > > [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] Im Auftrag von Jaap
> > > > Keuter
> > > > Gesendet: Samstag, 30. September 2006 17:53
> > > > An: Developer support list for Wireshark
> > > > Betreff: Re: [Wireshark-dev] Question concerning some specific
> > > > protocol... [heur]
> > > >
> > > > Hi,
> > > >
> > > > Well that is simple then. Register your proprietary dissector for
> > > > the UDP port. If it's your protocol dissect it, otherwise hand it
> > > > over to the RTP dissector.
> > > >
> > > > Thanx,
> > > > Jaap
> > > >
> > > > On Sat, 30 Sep 2006, Tobias Erichsen wrote:
> > > >
> > > > > Hi everyone,
> > > > >
> > > > > I have used Ethereal/Wireshark for some time now, and I
> > > > would like to
> > > > > contribute by developing a protocol-plugin for a
> > combination of a
> > > > > proprietary and an open protocol based on RTP...
> > > > >
> > > > > Both protocols run on the sample UDP port-pair tuple. The
> > > > proprietary
> > > > > protocol can be detected very easy, as it has an easy to
> > > > distinguish
> > > > > signature.  The RTP-based part is not, as RTP has
> > really no good
> > > > > recognition value.
> > > > >
> > > > > So how would I design such a dissector, that if I detect
> > > > the easy-to-
> > > > > recognize proprietary protocol on a UDP-port-tuple, that I
> > > > could then
> > > > > heuristically see that the other datagrams will be the
> > > > RTP-based ones
> > > > > and hand their decoding appropriate (writing again my own
> > > > > dissector for this specific RTP payload type)
> > > > >
> > > > > Best regards,
> > > > > Tobias
> > > > >
> > > > > PS.: I will be developing & testing the stuff on
> > Windows-platform,
> > > > > cause that's what I'm most familiar with ;-)
> > > > >
> > > >
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