Wireshark · Wireshark-dev: Re: [Wireshark-dev] saving data in pcap file format

[Andy Lawman <ALawman@xxxxxxxxxxx>]

If this turns out to be tricky, you might
consider whether using text2pcap would be easier. This takes a hex dump
of your packets and generates a pcap file. It ships with Wireshark and
its manpage is at http://www.wireshark.org/docs/man-pages/text2pcap.html.
To use this you'll need to write some code to take your capture and translate
it in to the dump format.

Andy.



From:      
 Lange Jan-Erik <Jan-Erik.Lange@xxxxxxxxxxxxxx>
To:      
 "gsslist+wireshark@xxxxxxxxxxxxxxxxxx"
       <gsslist+wireshark@xxxxxxxxxxxxxxxxxx>,
Developer support list for Wireshark <wireshark-dev@xxxxxxxxxxxxx>
Date:      
 11/10/2010 14:21
Subject:    
   Re: [Wireshark-dev]
saving data in pcap file format
Sent by:    
   wireshark-dev-bounces@xxxxxxxxxxxxx

---

Ok, in the documentation of winpcap I found the function
pcap_dump_open().
It opens a file for another function ...loop() with captures packet and
saves it in this file.

But I have to open the file and have to write my data in this file.. not
captureing it with this loop() function. It is possible to insert my data
into a struct and then save this structure into a .pcap file? 

I need the "low-level" description of this file format. It should
be possible to implement an own easy function to save the data.


________________________________________
Von: wireshark-dev-bounces@xxxxxxxxxxxxx [wireshark-dev-bounces@xxxxxxxxxxxxx]
im Auftrag von Gregory Seidman [gsslist+wireshark@xxxxxxxxxxxxxxxxxx]
Gesendet: Montag, 11. Oktober 2010 13:53
An: wireshark-dev@xxxxxxxxxxxxx
Betreff: Re: [Wireshark-dev] saving data in pcap file format

On Mon, Oct 11, 2010 at 01:35:17PM +0200, Lange Jan-Erik wrote:
> Hello,
>
> I want to analyze an usb datastream with wireshark. To record the
data I use a proprietary development that uses libusb to receive the data.
>
> Ok, to analyze the data I want to use wireshark. Is there a way to
save the recorded data as a *.pcap File? Is there a library I could use
to write the data into a file? Can you an recommend overview about this
file format?
>
> When I have this pcap file I would create a dissector plugin to dissect
the data according to my protocoll.

You are looking for libpcap (or WinPcap on Windows). Works like a charm,
and has lots of language bindings (I've used it with Ruby).

> Best regards
> Jan
--Greg

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