["pevee" <clkuan@xxxxxxxxxxxxxxx>]

Title: Message

Anybody knows what this function does:-

 

(1) tvb_get_ntohs(tvb, offset);

 

I couldn't find anything in the doc, please advice :)

 

Thank you,

Warm regards,

 

Calvin Kaiwen

----- Original Message -----

From: Richard Urwin

To: 'Visser, Martin (Sydney)' ; ethereal-dev@xxxxxxxxxxxx

Sent: Monday, September 30, 2002 5:04 PM

Subject: RE: [Ethereal-dev] Creating a new Dissector

IMO it's well worth going the extra mile and:

10. Read Readme-plugins

11. Convert your dissector to a plug-in

 

There's a fair amount of debugging to be done there as well, but you can then keep upgrading/reinstalling Ethereal without having to build your own version each time. Don't try to go straight to a plug-in, the conversion is easy and the bug list is easier to control if you do it in two steps.

 

--
Richard Urwin, Private
"No 9000 series computer has ever made a mitsake or corrubiteddatatato."

-----Original Message-----
From: Visser, Martin (Sydney) [mailto:Martin.Visser@xxxxxx]
Sent: 30 September 2002 08:20
To: ethereal-dev@xxxxxxxxxxxx
Subject: RE: [Ethereal-dev] Creating a new Dissector

Never having created a dissector, this is how I would go about it (in my own hacker way!)

 

1. Grab the source tree. 0.9.7 is the current release

2. There is some documentation in there on how ethereal is put together. Failing that....

3. Pick a currently dissected protocol, say IGMP, and do a grep/find/ etc to find the relevant dissector code. (Hint usually they are named packet-xxx.c, in this case packet-igmp.c)

4. Copy this dissector to yours -  packet-peveeprotocol.c .

5. Try to hack the dissector it to make it look like it will decode your registration packet.

6. Hack makefile.am to add your dissector. 

7. Run "make"  to hopefully compile your dissector, create the hooks into "register.c" etc, and link your dissector into ethereal.

8. With a long stick type "ethereal" and watch it all blow up. Then go to step 5 :-)

9. If it runs try it on your packet. Likely you will need to go back to step 5 again :-)

 

There are probably a few bits missing here, but hopefully this will give an idea of where to start (at least until someone who has done this replies!)

 

(I always find "grep -r" and using "tags" with vi, are my best friend when it comes to hacking someone elses code!!!)

Martin Visser
Network Consultant
Technology & Infrastructure - Consulting & Integration
COMPAQ, part of the new HP

3 Richardson Place
North Ryde, Sydney NSW 2113, Australia
Phone (: +61-2-9022-1670    Mobile È: +61-411-254-513
   Fax 7: +61-2-9022-1800     E-mail + : martin.visserAThp.com

-----Original Message-----
From: pevee [mailto:clkuan@xxxxxxxxxxxxxxx]
Sent: Monday, 30 September 2002 4:39 PM
To: ethereal-dev@xxxxxxxxxxxx
Subject: [Ethereal-dev] Creating a new Dissector

p/s: Ronnie suggested I post the message here...I could be getting more help :)...Thank you

 

Hi,

   I am not sure if dissecting is the correct word to use. (could be
decoding new packet)

(1) I have created a Regustration Packet which have its own format.
(2) How can I write a code so that ETHEREAL will well recognise it and
decode it

Hope to hear from you all soon...

Thank you

Warm regards,

Calvin Kaiwen

 

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