18-11-2008

• These materials are prepared only for the students enrolled in

the course Distributed Software Development (DSD) at the

Department of Computer Science and Engineering,

University of Mälardalen, Västerås, Sweden and at the Faculty

of Electrical Engineering and Computing, University of Zagreb,

Croatia (year 2003/2004).

• For all other purposes, authors’ written permission is needed!

• The purpose of these materials is to help students in better

understanding of lectures in DSD and not their replacement!

NOTICE!

28-11-2008

Selected Topics in Software Engineering -

Distributed Software Development

38-11-2008

ASN1 to CSV convertergenerator

ASN2CSV project team

48-11-2008

About project

• Telecommunication industry

• Might be used in a real enviroment

• Customer: Ring Datacom

58-11-2008

Telecommunication

• Switching elements produce calls information – Call Detail Records (CDR)

• CDR's are collected and distributed to other systems, like billing system

• Usually, CDR's are encoded in ASN1 BER

68-11-2008

Problem

• Different CDR formats (ANS1 grammars)

• Convert to some common format (CSV) in order to use in different systems

• Develop decoder for each encountered ANS1 grammar or...

78-11-2008

Task

• To make an automated CDR to CSV converter for any encountered ANS1 grammar

88-11-2008

Requirements

• Multiple platforms

• Speed

• Reliability

• Well tested and debugged

98-11-2008

ASN1

• Abstract Syntax Notation One

• X.400 electronic mail, X.500 and LDAP directory services, H.323 (VoIP), BACnet and SNMP, ...

108-11-2008

ASN1

• Data types: boolean, null, integer, real, enumerated, bit string, octet string, ...

• Data constructs: choice, sequence, set, sequence of, set of

118-11-2008

ASN1 ExampleSGSN-R6-CDR

DEFINITIONS IMPLICIT TAGS ::=

BEGIN

BCDDirectoryNumber ::= OCTET STRING

CallDuration ::= INTEGER

CallEventRecord ::= CHOICE

{

sgsnPDPRecord [20] SGSNPDPRecord,

sgsnSMORecord [23] SGSNSMORecord,

sgsnSMTRecord [24] SGSNSMTRecord

}

128-11-2008

BER

• Basic Encoding Rules

8 7 6 5 4 3 2 1

Class P/C Number

Class Bit 8 Bit 7

Universal 0 0

Application 0 1

Context-specific 1 0

Private 1 1

BER Example61 82 e5 fe-5f 29 01 02-5f 25 01 01-5f 26 05 48 a..._).. _%.._&.H

52 56 56 49-5f 24 05 53-56 4e 53 4d-5f 27 07 30 RVVI_$.S VNSM_'.0

30 30 39 30-36 36 5f 1f-0e 32 30 30-38 30 39 31 009066_. .2008091

39 32 30 34-34 35 33 5f-2d 05 2b 30-32 30 30 62 9204453_ -.+0200b

82 e5 bb 64-45 5f 22 08-29 34 00 11-30 96 30 7f ...dE_". )4..0.0.

55 0e 32 30-30 38 30 39-31 39 32 30-33 34 30 34 U.200809 19203404

5f 2d 05 2b-30 32 30 30-53 01 00 58-01 00 7f 2e _-.+0200 S..X....

05 5f 2b 02-32 31 56 0b-33 38 36 34-31 30 30 31 ._+.21V. 38641001

33 33 33 5f-23 04 4d 53-43 36 64 45-5f 22 08 29 333_#.MS C6dE_".)

34 00 11 35-11 71 1f 55-0e 32 30 30-38 30 39 31 4..5.q.U .2008091

39 32 30 33-34 30 31 5f-2d 05 2b 30-32 30 30 53 9203401_ -.+0200S

01 00 58 01-00 7f 2e 05-5f 2b 02 32-31 56 0b 33 ..X..... _+.21V.3

38 36 34 31-30 30 31 33-33 33 5f 23-04 4d 53 43 86410013 33_#.MSC

36 64 45 5f-22 08 29 34-00 11 34 32-97 2f 55 0e 6dE_".)4 ..42./U.

8-11-2008

148-11-2008

CSV

• Comma Separated Values

• value1,value2,value3• value1,,value3

• value1,value can contain spaces,value3

• value1,”north, south”,value3

• value1,”some ””important”” data”,value3

CSV Example2, 38641001333, , 293400113096307, , 20080919203404, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38641001333, , 293400113511711, , 20080919203401, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113432972, , 20080919203400, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113426717, , 20080919203354, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113445415, , 20080919203350, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113343858, , 20080919203347, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

1, 38640441000, , 293400113210345, , 20080919203347, +0200, 0, , , 0, 22, , , 182, HRVVI, SVNSM, 0009066,

1, 38640441000, , 293400113445415, , 20080919203343, +0200, 0, , , 0, 22, , , 182, HRVVI, SVNSM, 0009066,

2, 38641001333, , 293400110348422, , 20080919203340, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

1, 38640441000, , 293400113343858, , 20080919203337, +0200, 0, , , 0, 22, , , 182, HRVVI, SVNSM, 0009066,

2, 385910401, , 293400113158588, , 20080919203336, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

1, 38640441000, , 293400113432972, , 20080919203335, +0200, 0, , , 0, 22, , , 182, HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113338805, , 20080919203335, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 38640441000, , 293400113555638, , 20080919203332, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

2, 393492000200, , 293400113555103, , 20080919203331, +0200, 0, , , 0, 21, , , , HRVVI, SVNSM, 0009066,

8-11-2008

Project Plan 1/2

Name Period Availability

Guido Di Campli (@MDH) 2008-10-28 to 2009-01-15 50%

Giovanni Piemontese (@MDH) 2008-10-28 to 2009-01-15 50%

Paolo D’Amelio (@MDH) 2008-10-28 to 2009-01-15 50%

Ivan Škugor (@FER) 2008-10-28 to 2009-01-15 50%

Željko Knežević (@FER) 2008-10-28 to 2009-01-15 50%

Željko Krpetić (@FER) 2008-10-28 to 2009-01-15 50%

8-11-2008

• The customer is Ring Datacom• The project leader is Ivan Škugor • The team leader in MDH is Guido Di Campli

16DSD

Project Plan 2/2

Responsability Member

eSNACC modification and testingGuido Di Campli (@MDH)

Giovanni Piemontese (@MDH)

Paolo D’Amelio (@MDH)

Project managment, Communication Ivan Škugor (@FER)

Documentation, SVN, Converter generator

Željko Knežević (@FER)

Converter generator, GUI Željko Krpetić (@FER)

Project Responsability

17DSD8-11-2008

18

Communications

• Communication– Skype

– MSN

– Google group

– E-mail

• Common language: English

8-11-2008

Work handling 1/2

From ASN.1 to CVS file converter V0.1 documentation:

“The General ASN.1 parser generation project can be divided into two subprojects that can be carried out independently providing that the interface between the two modules is clearly defined. The first part or module is a standalone GUI application that takes as an input an ASN.1 grammar and generates a configuration file for the ASN.1 to CSV file converter according to the choices made by the application user.

This configuration file is used by the second module – the ASN.1 to CSV file converter that accepts a binary ASN.1 BER encoded file (conformant to the grammar in question) and generates a CSV text file with the values defined in the control file.”

19DSD8-11-2008

Work handling 2/2

• Subproject 1: GUI + Converter

• Subproject 2: eSNACC modification and testing

8-11-2008

Project

Subproject 1

Subproject2

20DSD

Risks

8-11-2008 21DSD

Estimation Time

8-11-2008 22DSD

ASN.1 CSV converter generator

238-11-2008 DSD

ASN.1 CSV converter generator

1. Select output format options in user friendly GUI

2. Generate ASN.1 decoding routines by ESNACC

3. Generate a main program (ANSI C) according to configuration file

4. Compile with ANSI C compiler for target platform

248-11-2008 DSD