[users@httpd] mod_proxy with regexps

[Andrew Musselman <An...@cwu.EDU>]

Hi, I am trying to set up a proxy to allow access to other devices on
the network.

These lines work great:
ProxyPass /xyz.mn.op.st/ http://xyz.mn.op.st/ 
ProxyPassReverse /xyz.mn.op.st/ http://xyz.mn.op.st/ 

I can access device xyz.mn.op.st by going to
http://myhost.edu/xyz.mn.op.st/, but I have about a hundred different
addresses I would like to access through the proxy.

Can some regexp guru point me in the right direction?  Or is there some
other solution?

Thank you for your time.

Best,
Andrew

Andrew Musselman
andrew@cwu.edu

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[users@httpd] Re: mod_proxy with regexps

[Brian Candler <B....@pobox.com>]

On Tue, Aug 23, 2005 at 10:11:20AM -0700, Andrew Musselman wrote:
> Hi, I am trying to set up a proxy to allow access to other devices on
> the network.
> 
> These lines work great:
> ProxyPass /xyz.mn.op.st/ http://xyz.mn.op.st/ 
> ProxyPassReverse /xyz.mn.op.st/ http://xyz.mn.op.st/ 
> 
> I can access device xyz.mn.op.st by going to
> http://myhost.edu/xyz.mn.op.st/, but I have about a hundred different
> addresses I would like to access through the proxy.
> 
> Can some regexp guru point me in the right direction?  Or is there some
> other solution?

mod_rewrite. (If the only tool you have is a hammer then everything looks
like a nail :-)

To start with try something like:

RewriteEngine on
RewriteRule /([^/]+)(.*)$ http://$1$2 [P]

This will do nothing *except* proxy /xxx/ to http://xxx/ for any xxx, and
it's horribly insecure since it will happily proxy to anywhere. So you need
to tighten this up; if you can match all the domains by a regexp or a few,
e.g. if they all end in .foo.com, then do that:

RewriteRule /([^/]+\.foo\.com)(/?.*)$ http://$1$2 [P]

Otherwise, you may need to use a RewriteMap lookup in a .txt or .db database
to allow the requests.

Regards,

Brian.

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