AVAcl - AntiVirus Access Control List

Welcome to AVAcl... Avacl is a (one hopes) simple program which allows you to control various aspects of email scanners such as AMaViS and Inflex with a finer degree of control. Such things as per-user or per-domain relaxations of file type or name blocking, as well as enforcing total email blocking on a per-user/domain level. Status Avacl is currently in ALPHA development phase. It's fully functional, but may alter in it's purpose/design. How it works Avacl uses the following command line parameters...
    avacl   -s >sender< (email address of sender)
            -r >receiver< (email address of recipient)
            -n >filename< (name of file we're testing)
            -t >filetype< (the type as returned by 'file' of the file)
            [-c >AVAcl configuration file< (default is /usr/local/avacl/avacl.conf)]
            [-v Be verbose about results]
            [-V (get the version)]
            [-h (help)]
A typical command line invokement might look like...
    	avacl -s pldaniels@pldaniels.com -r joe@nowhere.co.za -n unknown.doc -t `file unknown.doc`
2. The result of the scan is available by two options. The exit-result of the avacl command line will have a bit set for each test pass/fail result as follows...(each from LSB) Type blocking Name blocking Text-content blocking Size blocking User/domain blocking By selecting the '-v' flag for Avacl, you can get a verbose resulting as follows
       	type=?:name=?:text=?:size=?:user=?
Where '?' will be '0' if test passed and greater than 0 if it failed. Support files Avacl requires the following support files (typically installed into /usr/local/avacl) filetype.block - contains file types to block and respective comments filename.block - contains file names to block and respective comments filetext.block - contains file text-strings to block and respective comments users.db - contains additional per-user/domain restriction relaxations or increments avacl.conf - Configuration file specifying the location of the above files and various other items. Format of users.db The users.db file contains a single user/domain entry per line. The format of the line is as follows...
    	<username/domainname>[:b][:z<kbyte-size>][:t<file type to release>][:n<file name to release>]
Thus, a line of...
    	pldaniels.com:z9000:tEXE:njunk.bmp:nprettypark.exe:tMOV
gives anyone with a domain name of pldaniels.com a maximum email size limit of 9000kb, allows EXE's to pass, allows junk.bmp file to pass, allows prettypark.exe to pass and allows MOV files to pass. In contraditction, a line as follows...
    	spammers.com:b
will block all emails from/to spammers.com. Licence Avacl is licenced under a BSD style licence. Download Avacl v0.1.0 released 23/11/2000 Things to do Finish off documentation Create built in use of FILE command Incorporate as part of Ebola project Contacts... You can contact the author (Paul L Daniels) via email on pldaniels@pldaniels.com. Other software written by Paul L Daniels... Inflex - Sendmail based Bidirectional email scanner. jslice - Image slicer and table generator for HTML. ripMIME - MIME attachment extractor for email. ebola - AV Script to AV Scanning engine bridge. pppdropper - PPP line utilisation based dropper. cInflex - Commercial, written in C version of Inflex (incl's ACL's).