Wireshark · Wireshark-dev: Re: [Wireshark-dev] NBAP: dissection of Private Messages

[praveen.jha@xxxxxxxxxxx]

Hi,
I tried to add one sub-dissector table for private IEs, but the problem is that for private IEs the Protocol-IE-Id is a choice (having a local ID and a global ID) instead of string or integer.
So how to go about registering a new sub-dissector table??

static int dissect_PrivateIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_port(nbap_pies_dissector_table, PrivateIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}

can we use something like PrivateIE_ID.local ??

Thanks and Regards,
Praveen

"Anders Broman" <anders.broman@xxxxxxxxxxxx>

"Anders Broman" <anders.broman@xxxxxxxxxxxx>
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02/26/2008 07:20 PM



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Subject	Re: [Wireshark-dev] NBAP: dissection of Private Messages

Hi,
There may not be a dissector table for private IE:s which in that case needs to be added. How much of the message
is decoded presently?
Regards
Anders

________________________________

Från: wireshark-dev-bounces@xxxxxxxxxxxxx genom praveen.jha@xxxxxxxxxxx
Skickat: ti 2008-02-26 19:54
Till: Developer support list for Wireshark
Ämne: Re: [Wireshark-dev] NBAP: dissection of Private Messages



Hi,
"PrivateMessage" PDU is already defined in the NBAP spec, but it doesn't have any IEs currently.
I am adding IEs to it (PrivateMessage-IEs).


PrivateMessage-IEs NBAP-PRIVATE-IES ::= {

{ ID local:id-type-1 CRITICALITY criticality TYPE Sample-Message-Type PRESENCE optional} ,
...
}

Regards

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Re: [Wireshark-dev] NBAP: dissection of Private Messages		 
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Hi,
Are you trying to add private PDU:s or Privare IE:s to a existing PDU?
Can you post a .pcap file of the message? 

Regards
Anders


________________________________

From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of praveen.jha@xxxxxxxxxxx
Sent: den 26 februari 2008 17:25
To: wireshark-dev@xxxxxxxxxxxxx
Subject: [Wireshark-dev] NBAP: dissection of Private Messages


Hi,
I am trying to implement the dissection of NBAP containing private message(s). For that I am including my private message
in asn1 format.
the message format is as follows :

-- ****************************************************************************************************************************
-- Private PDUs
-- ****************************************************************************************************************************

PrivateMessage-IEs NBAP-PRIVATE-IES ::= {
{ ID local:id-type-1 CRITICALITY criticality TYPE Sample-Message-Type PRESENCE optional} |
{ ID local:id-type-2 CRITICALITY criticality TYPE Sample-Message-Type PRESENCE optional} ,
...
}

Sample-Message-Type ::= CHOICE {
type-a value-a ,
type-b value-b
}

the above definition, I have added in NBAP-PDU-Containers.asn file.



--*******************************************************************************************************************************
--Private Constants
--*******************************************************************************************************************************
id-type-1 6000
id-type-2 7000
--*******************************************************************************************************************************
Added the constants in NBAP-Constants.asn file.

Apart from this I have also modified the CNF file,
In REGISTER_NEW added type-1, type-2 as IEs and, then type-a and type-b as IE-Extensions.

But the dissector is not able to dissect the Sample-Message-Type.
Any suggestions??

Regards,
Praveen Kumar Jha


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"DISCLAIMER: This message is proprietary to Aricent  and is intended solely for the use of 
the individual to whom it is addressed. It may contain privileged or confidential information and should not be 
circulated or used for any purpose other than for what it is intended. If you have received this message in error, 
please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly
prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for 
loss or damage arising from the use of the information transmitted by this email including damage from virus."