4.40.2 -- RAR 3 support

[Rick Cooper]

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> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK]On
> Behalf Of Rakesh
> Sent: Monday, March 07, 2005 12:16 AM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: 4.40.2 -- RAR 3 support
>
>
> I am very close to finishing my Unrar Perl Module using the unrarlib (c
> library to open Rar archives). This doesn't needs the unrar command to
> be installed on your system and can simply give a list of files in the
> archive or extract the archives to a working directory specified in the
> argument to the function. However the version of unrarlib
> (www.unrarlib.org) that I found doesn't have support for Rar 3
> compression. If anyone has made unrarlib to support Rar 3 compression
> please pass it on to me.

No one is going to produce a library for Rar 3 unless the author changes the
license. It's the reason ClamAV does use the latest libs.

>
> I am writing this Perl interface for Unrar especially with MailScanner
> in mind. It  helps you determine the filenames and the number of files
> in the rar archive without extracting it. This may be needed incase you
> want to do filename checks but avoid virus scanning on them. Also you
> can extract the files to a working directory and do virus scanning on
> it. I will give more detailed feature specification of it on this list
> once I complete it.
>
> Rakesh.

The current code functions the same as the UnPackZIp function, allows
encrypted detection, file name checks, file type checks, if a file is
encrypted it will create a 0 length file for the file name checks, etc. In
any even, unless you support version 3 Rar files you are going to hit a wall
using the 2.0 libraries. Anything that expects to be useful is simply going
to have to support the external unrar command line.

Rick

>
> Julian Field wrote:
>
> > With credit for doing the hard work going to Rick Cooper:
> >
> > I have just released 4.40.2. This includes external RAR unpacking for
> > clamavmodule.
> > It also uses the unrar command to look inside RAR archives to check for
> > blocked filenames and filetypes, and also to see if the RAR archive is
> > password-protected.
> >
> > There are 2 new configuration options, "Unrar Command" and "Unrar
> > Timeout". Both of these will of course be added by
> > upgrade_MailScanner_conf.
> >
> > Please let me know what you think.
> >
> > Download from www.mailscanner.info as usual.
>
>
>
> --
> Regards,
> Rakesh B. Pal
> Emergic CleanMail Team.
> Netcore Solutions Pvt. Ltd.
>
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