Wireshark · Wireshark-dev: Re: [Wireshark-dev] local operation code in MAP

["Anders Broman" <a.broman@xxxxxxxxx>]

Hi,
My bad the complete encoding should be 02 02 88 99 ( Integer(02) length(02)
Value(88 99).
Best regards
Anders
________________________________________
Från: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] För Anders Broman (AL/EAB)
Skickat: den 27 februari 2007 17:55
Till: Developer support list for Wireshark
Ämne: Re: [Wireshark-dev] local operation code in MAP

Hi,
Shouldn't the encoded value be H'81 H'19(153) ?
Best regards
Anders
________________________________________
From: wireshark-dev-bounces@xxxxxxxxxxxxx on behalf of
durgabhavani.uppuluru@xxxxxxxxx
Sent: Tue 2/27/2007 3:14 PM
To: wireshark-dev@xxxxxxxxxxxxx
Subject: Re: [Wireshark-dev] local operation code in MAP
Hi,
 
I’ve given the value for operation code, not the ASN1 compiler.
 
I’ve tried below suggestion but still got the problem.
Operation code length : 02, and the operation code : H’81 H’99.
 
I tried to print the opcode value read from dissect_ber_integer,
dissect_ber_integer64
They print negative number for int format & huge positive number for
unsigned format.
 
Best Regards,
Bhavani.
 
 
 
From: Florent.Drouin@xxxxxxxxxxxxxxxxx
Date: Tue, 27 Feb 2007 13:05:42 +0100

      Hi,
 
You said:
"Hex value shown, in the bytes pane is 99."
Is this value field by yourself, or by an ASN1 compiler ?
I think, It could be a problem of long form encoding.
Could you try to use H'81 H'99 instead of H'99 for the operation code in
the message to decode ?
 
Regards
Florent
 
________________________________________
From: DurgaBhavani Uppuluru 
Sent: Tuesday, February 27, 2007 12:08 PM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: RE: local operation code in MAP
 
Hi Again,
 
I’ve tried latest svn version files too, still I get the same problem.
I’ve added gsmmap, ranap directories & packet-gtp.c from svn Revision 20934,
on top of wireshark-0.99.5 sources.
 
Please help me.
 
Best Regards,
Bhavani.
________________________________________
From: DurgaBhavani Uppuluru 
Sent: Tuesday, February 27, 2007 9:41 AM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: RE: local operation code in MAP
 
Hi,
 
I’m using wireshark 0.99.5 sources.
The below code is right. 
I’ve added the operations in the same way.
 
Here are the steps followed:
 
My GSMMAP.asn files looks
 
1. OperationLocalvalue ::= INTEGER{
        updateLocation (2),
            :
        noteMM-Event (89),
        operation1(152),
        operation2(153)
}
 
2. Operation descriptions of operation1 & operation2 are added
 
3. packet-gsm_map-template.c is updated with
 
gsm_map_opr_code_strings[]={
        {   2, "updateLocation" },
        :
        {   152, "operation1" },
        {   153, "operation2" }
}
 
dissect_invokeData()
switch(opcode){
  case  2: /*updateLocation*/ dissect_gsm_map_UpdateLocationArg();  break;
            :
  case 152: /*operation 1*/ dissect_gsm_map_Operation1Arg(); break;
  case 153: /*operation 2*/ dissect_gsm_map_Operation2Arg(); break;
}
return offset;
}
            
3. makefile is used to generate packet-gsm_map.c, packet-gsm_map.h.
Options used with asn2wrs are:
python ../../tools/asn2wrs.py -b -e -p gsm_map -c gsmmap.cnf -s
packet-gsm_map-template GSMMAP.asn
 
4. Generated packet-gsm_map.c, packet-gsm_map.h are copied to
../../epan/dissectors folder.
Standard makefile present in the wireshark-0.99.5 directory is used to build
the wireshark exe.
 
The same steps when followed with operation codes with 90,91 or 94,95  work
fine.
 
Thanks for your time.
 
Best Regards,
Bhavani.
 
From: "Anders Broman \(AL/EAB\)" <anders.broman@xxxxxxxxxxxx>
Date: Mon, 26 Feb 2007 16:21:09 +0100
Hi,
Are you running the latest SVN version of Wireshark?
I asume that "adding an operation with local value 153 to GSMMAP" means that
you are editing the sources,
what happens if you change:
GSMMAPOperationLocalvalue ::= INTEGER{
 updateLocation (2),
:
 noteMM-Event (89)
        } 
To:
 noteMM-Event (89),
 your-string(153)
        } 
in GSMMAP.asn and rebuild the dissector using asn2wrs?
Best regards
Anders
 
________________________________________
From: DurgaBhavani Uppuluru 
Sent: Monday, February 26, 2007 10:46 AM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: RE: local operation code in MAP
 
Hi Anders,
 
Hex value shown, in the bytes pane is 99.
I’ve tried other numbers too (>150) and I get similar result.
 
Best Regards,
Bhavani.
 
From: "Anders Broman" <a.broman@xxxxxxxxx>
Date: Sun, 25 Feb 2007 19:55:43 +0100
Hi,
What is the hex value shown in the bytes pane when marking localvalue in the
middle pane?
Best regards
Anders
 
________________________________________
From: DurgaBhavani Uppuluru
Sent: Sunday, February 25, 2007 2:36 PM
To: 'wireshark-dev@xxxxxxxxxxxxx'
Subject: local operation code in MAP
 
Hi All,
 
Greetings to you.
 
I’m adding an operation with local value 153 to GSMMAP.
But dissector does not recognize 153, it reports Unknown -103.
Kindly tell me how to set this value.
 
Thanks,
Bhavani.