What:
squid redirector for traffic scanning with clam antivirus.
Why:
squclac is written in C, so it is small, fast and operates only in ram.
squid redirector ideologically is not good solution to scan for virus, take it as temporary workaround. We are working now on squid patch for libclamav. This patch will be released under squclac project as replacement for redirector.
Download:
http://sourceforge.net/projects/squclac/
Some project files:
README
INSTALL
Sample squclac.conf
Sample squid.conf
Sample information.php file (virus info. Rename it to "information.php".)
Good Luck!