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Re: SSL decoding with start_tls
From: David Richards <d_m_richards () comcast net>
Date: Fri, 28 Jun 2013 12:56:01 -0500

Got XMPP starttls decryption working. Just need to get organized to submit the necessary changes.

I also have some mods to .gitignore for Windows builds. Mostly it's a bunch of missed file extensions to ignore (.lib, .pdb, etc.). Should that be put in as a bug as well?

Turns out the SSL dissector call was already there but the XMPP desegmentation logic was preventing it from being properly called. Also, the packet_info can_desegment and saved_can_desegment were not being manipulated correctly. I looked at packet-smtp.c which was doing similar starttls handling.

The bug references were helpful.  Thanks.


On 6/27/2013 10:32 AM, mmann78 () netscape net wrote:
Basically the problem is that XMPP needs to be registered to work with SSL. See bug 8625 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8625) and revs 49152 (http://anonsvn.wireshark.org/viewvc?view=revision&revision=49152 <http://anonsvn.wireshark.org/viewvc?view=revision&revision=49152>) and 49183 (http://anonsvn.wireshark.org/viewvc?view=revision&revision=491583 <http://anonsvn.wireshark.org/viewvc?view=revision&revision=491583>) for an example of the the steps you'd need to do to add SSL to the XMPP dissector.
-----Original Message-----
From: David Richards <d_m_richards () comcast net>
To: wireshark-dev <wireshark-dev () wireshark org>
Sent: Wed, Jun 26, 2013 3:19 pm
Subject: [Wireshark-dev] SSL decoding with start_tls

I see that the feature to decode SSL/TLS streams with start_tls does not appear to work with XMPP. I want to know:

1) Am I missing something and it should work?

If no, then:

2) Was it intentionally left out because it's inherently different or harder to do than others? 3) Can someone point me to the code that does this feature so I can add XMPP support?

Dave Richards


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