REMOTE_USER look-ahead in a RewriteCond expr ap_expr

2012-05-29 Thread Richard Davies 
Hi all,

I'm trying to use the Apache 2.4 ap_expr syntax to write a complex test with
RewriteCond expr. My test uses %{REMOTE_USER}.

However, the %{LA-U:REMOTE_USER} look-ahead syntax needed to access this
variable in a per-server context doesn't seem to work inside an ap_expr
- I get a parse error.

Can anyone help me understand how to test REMOTE_USER in a RewriteCond
expr test?

Thanks,

Richard.

Re: REMOTE_USER look-ahead in a RewriteCond expr ap_expr

2012-05-29 Thread Stefan Fritsch 
On Tuesday 29 May 2012, Richard Davies wrote:
 I'm trying to use the Apache 2.4 ap_expr syntax to write a complex
 test with RewriteCond expr. My test uses %{REMOTE_USER}.
 
 However, the %{LA-U:REMOTE_USER} look-ahead syntax needed to access
 this variable in a per-server context doesn't seem to work inside
 an ap_expr - I get a parse error.
 
 Can anyone help me understand how to test REMOTE_USER in a
 RewriteCond expr test?

In a direct way, the answer is: not yet.

But it should be possible to capture the value with a regex and use it 
as backreference $1 in an expr. Something like this (untested):

RewriteCond %{LA-U:REMOTE_USER} ^(.*)$
RewriteCond expr  ... $1 ...


Does this work?

Cheers,
Stefan