Wireshark-dev: [Wireshark-dev] Re : Re: SMTP : Copying Data into a file
From: "Auvray Julien" <[email protected]>
Date: Wed, 30 Apr 2008 20:54:40 +0200

Hello everybody!!

I’m trying to add script to create a file in the source “epan/dissectors/packet-smtp.c” when I send a mail.

Then I have added :


P_FICHIER = fopen ("data2.txt", "w");


at the beginning of the function “dissect_smtp”.

And when I start wireshark and I send my mail, I have no file created. So I don’t understand how function the soft.

Anybody can help. I’m a true beginner.




From: "goitom kahsay" <[email protected]>
Date: Wed, 30 Apr 2008 10:23:35 +0300

Hi  Sebastien,

The SMTP dissector is defined @ 


But can u help me any idea on how to extract the SMTP email parameters such as
From,To,subject ,date and .... from the SMTP packets

Any idea is most appriciated

10Q  in advance

On Tue, Apr 29, 2008 at 7:36 PM, Sébastien Tandel <[email protected]> wrote:

Hi Julien,


I have to copy all the data transferred into a mail (SMTP) into a file. I don't think I have to implement a new dissector because SMTP one already exist, no?



So I think I have to complete the existing one and add a method to create a file and copy the data in. Am I in the right way to do that job?

The basic idea is for sure correct. I think you must at least add the TCP reassembly stuffs to be able to guarantee that you're playing with the entire mail and the export object GUI Feature to save to a file (the mail or its attachments). You can take a look at epan/dissectors/packet-http.c to see how to do this.


 So where is defined smtp dissector?







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