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From "West, Chris" <chris.w...@eds.com>
Subject RE: [users@httpd] Comparing environmental variables in httpd.conf for conditional logic
Date Mon, 21 May 2007 15:19:56 GMT
Thanks Joshua,

After much banging of head on walls I was beginning to suspect that it
wasn't going to work.  I'll cut my losses now.

Regards

Chris West
Information Analyst
EDS - UKIMEA Commercial AIU
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-----Original Message-----
From: jslive@gmail.com [mailto:jslive@gmail.com] On Behalf Of Joshua
Slive
Sent: 21 May 2007 16:14
To: users@httpd.apache.org
Subject: Re: [users@httpd] Comparing environmental variables in
httpd.conf for conditional logic

On 5/21/07, Krist van Besien <krist.vanbesien@gmail.com> wrote:
> On 5/21/07, West, Chris <chris.west@eds.com> wrote:
> > Hi Krist,
> >
> > Sorry to get back to you again, I have tried the format you 
> > described and still have problems, is the following how you would 
> > expect the rewrite condition to look?  I have tried both, neither 
> > giving the result expected.
> >
> > 1.
> >
> >     RewriteCond %{HTTP_REFERER} ^.*%{ENV:SERVER_NAME}.*$ [OR]
> >     RewriteCond %{HTTP_REFERER} ^$
> >     RewriteRule .* - [E=dont_log_referer:true]
> >
> > 2.
> >
> >     RewriteCond %{ENV:HTTP_REFERER} ^.*%{ENV:SERVER_NAME}.*$ [OR]
> >     RewriteCond %{ENV:HTTP_REFERER} ^$
> >     RewriteRule .* - [E=dont_log_referer:true]
>
> After your other mail I know know that it is the "internal variable"
> SERVER_NAME that you want to test against, and in this case 
> %{SERVER_NAME} ought to be correct. %{HTTP_REFERER} is also correct.
>
> What could be your problem is that SERVER_NAME is not containing what 
> you expect, and that therefore the rule doesn't match. Have you tried 
> turning rewritelog on, and setting the loglevel to 9? This ought to 
> give you a ton of information.

In any case, this isn't going to work. The regular expression used in
RewriteCond (and RewriteRule and SetEnvIf) cannot contain variables.
It is compiled at server-start and doesn't have access to anything
per-request.

I don't think there is any way to do exactly what you want with standard
modules. You'll need to specify the ServerName explicitly in the rules.

Joshua.

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