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Re: SSL decoding with start_tls
From: d_m_richards () comcast net
Date: Sun, 30 Jun 2013 06:06:00 +0000 (UTC)

Added bug 8871 for the TLS decryption with XMPP starttls along with a proposed fix. 

----- Original Message -----
From: "David Richards" <d_m_richards () comcast net> 
To: wireshark-dev () wireshark org 
Sent: Friday, June 28, 2013 1:56:01 PM 
Subject: Re: [Wireshark-dev] SSL decoding with start_tls 

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 ) and 49183 ( 
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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