Mitch (WebCob) wrote:

Jeremy Kitchen wrote:

On Thursday 05 August 2004 12:46 pm, Ryan Moore wrote:


Such that if freshclam downloads a signature and if the
signature has a 'engine version requirement' or some attribute that can
be compared against the installed engine, if the installed engine isn't
newer, give a nasty warning in the log.


it already does this.  search the archives for 'functionality level'



WARNING: Your ClamAV installation is OUTDATED - please update

immediately !

WARNING: Current functionality level = 1, required = 2


-Jeremy


I didn't get any such warnings on any of my machines, they were all using clamav 0.72 with freshclam daemonized (with LogVerbose in freshclam.conf). Do you have to do anything special to get this sort of behavior? Also did anyone get these warnings when running a version previous to 0.75.1?


Ryan Moore
> This is predicated on the developers of the database incrementing the
> "functionality level" when they make changes like this.
>
> I'm still not sure I get it, but there seems to be some resistance to doing
> this consistantly.
>
> Some changes in detection seem to make it into CVS, and I think future
> versions without a change in the db functionality level - so the code is
> there, and maybe it was originally for MAJOR changes - not simply one or two
> viruses that need the upgrade, but it doesn't seem to make sense for the way
> people use this project...


IIRC freshclam doesn't even update the local database if your local installation has a too small "functionality level". I guess it was implemented with major database format changes in mind, like 0.72 simply won't load databeses with the new md5 hashes in it (it would die).

Just an educated guess though. Haven't looked at the sources.

Thomas



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