Wireshark-dev: Re: [Wireshark-dev] Including ASN.1 format coding in a C dissector
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From: <taraniteja.vishwanatha@xxxxxxxxx>
Date: Fri, 13 Apr 2007 12:52:22 +0530

Hi Anders,

 

To include the RANAP messages in my dissector, I have done the following:

 

1.In ranap.cnf under #.EXPORTS, I have added the message id s which I want to export.

2.In packet-ranap.h, I have included the corresponding functions of the messages which I want to add.

3.In my dissector , I have included packet-ranap.h , packet-per.h and called the functions appropriately.

 

But I am getting errors due to some linking problems.

 

error: `actx' undeclared (first use in this function)

error: (Each undeclared identifier is reported only once

 

I have not defined asn1_ctx_t *actx in my dissector as I have included the appropriate headers.

 

Can you please help???

 

Regards,

Tarani

 

From: Taraniteja Vishwanatha (WT01 - IP-Multimedia Carrier & Ent Networks)
Sent: Thursday, April 12, 2007 11:32 AM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: RE: Including ASN.1 format coding in a C dissector

 

Hi Anders,

 

Thanks for the information. The dissector is propreitary , hence I cant include it in Wireshark.

 

I will include RANAP messages in the way you have mentioned.

But then , I will have a tough time forming packets for testing . Any clue how can I form the packets.

 

Thanks in advance.

 

Regards,

Tarani

 

From: Taraniteja Vishwanatha (WT01 - IP-Multimedia Carrier & Ent Networks)
Sent: Wednesday, April 11, 2007 5:40 PM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: Including ASN.1 format coding in a C dissector

 

Hi ,

 

I have written  a dissector for a protocol which has a coding standard of Tag-Length-Value. Now in this dissector , I have to add some messages of RANAP protocol which has a coding standard in ASN.1 format.Already the dissector for RANAP is available in the wireshark. Now:

 

1.Can I call the existing dissector for those particular messages??? If so how do I do that??

2. If I want to include it normally in my dissector, how can I convert the ASN.1 format to obtain the tag and lengths of  individual parameters??

 

Can anybody please help??

 

//Tarani


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