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Generic audit trail converter
| Generic audit trail converter [message #4933] |
Wed, 23 August 1995 00:00 |
amo
Messages: 2
Registered: August 1995
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Junior Member |
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Dear all,
I am about to design a generic audit trail format converter program.
Its purpose is to convert native audit trails to a canonical format
which is the only one supported for analyzing audit trails by another
tool.
The canonical format, called Normalized Audit Data Format (NADF),
is defined as follows: Given an audit record in the audit trail,
each of its fields is converted to a triplet:
ID LG VALUE
|___|___||___|___|_________ ... ___|
<-------><-------><---------------->
2 bytes 2 bytes LG bytes + padding
where ID is identifier of the field, LG is the length in bytes
of its value and VALUE is its value.
The entire NADF record is obtained by appending the conversion
(as shown above) of each of its fields. Finally a 4-bytes int
begins the NADF record to indicate its total length.
Since writing a format converter for each type of audit trail
can be very boring, I am investigating ways of writing a generic
converter. My basic idea is to provide a sort of Interface
Description Language to specify the format of the file to be
converted to NADF. This IDL is processed by the generic converter
to (almost) automatically generate source code of the format
converter for this particular input audit file.
The audit file may contain more than one record type and a field
may also be a structure of its own.
Having said that (and I am sorry for being lengthy), I wonder
if there are already tools for doing this maybe in an even more
generic way (any format to any format conversion) and/or libraries
to support this.
Any suggestions would be very appreciated and thanks to you all.
Aziz.
--------------------------+--------------------------------- ----
| Abdelaziz Mounji | amo@info.fundp.ac.be |
| ASAX project | http://www.info.fundp.ac.be/~amo |
| Institut d'Informatique | voice: +32 81 724987 |
| University of Namur | Fax : +32 81 724967 |
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