[squid-users] squirm 1.23 conditional redirect to a local mirror patch

Hi Chris, all,

It's been a while since I last played with squirm, but I put
together a quick and ugly hack to squirm 1.23 to help optimise
our setup.

We have squid running for a smallish group of users, and we also keep
mirrors of various site - ximian, redhat, suse, security updates, etc.
I was redirecting unconditionally to the local mirror, and occasional
problems would crop up with the mirror being out of sync.

To fix this, I added an optional 4th field to regex/regexi lines,
which is a 'disk_mirror_replacement' field. It works in a similar way
to a normal regex(i) redirection, but only if the file exists is the
redirection done.

Example:

regex ^ftp://updates\.redhat\.com/(.+rpm)
       ftp://10.10.10.1/pub/mirrors/redhat/updates/\1
       ^ftp://updates.redhat.com/
       /var/ftp/pub/mirrors/redhat/updates/\1

Essentially the above redirects from updates.redhat.com to our
internal ftp server any requests for *.rpm, only if the requested
file exists in /var/ftp/pub/mirrors/redhat/updates/

Patch is at ftp://pc24.sr.bham.ac.uk/pub/packages/redhat-7.2/SOURCES/squirm-mirror.diff

A redhat RPM is at ftp://pc24.sr.bham.ac.uk/pub/packages/redhat-7.2/RPMS/i386/squirm-1.23-2mirror.i386.rpm

Thanks for the efforts you made putting squirm together in the first
place!

Cheers,

Mark

-- 
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Mark Cooke                  The views expressed above are mine and are not
Systems Programmer          necessarily representative of university policy
University Of Birmingham    URL: http://www.sr.bham.ac.uk/~mpc/
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