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Posted to bugs@httpd.apache.org by bu...@apache.org on 2005/06/15 20:19:49 UTC

DO NOT REPLY [Bug 35375] New: - mod_rewrite doesn't handle environment variables correctly

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http://issues.apache.org/bugzilla/show_bug.cgi?id=35375

           Summary: mod_rewrite doesn't handle environment variables
                    correctly
           Product: Apache httpd-1.3
           Version: 1.3.26
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_rewrite
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: pilop@difu.de


when using mod_rewrite to redirect whenever an env-variable is set
it fails matching the RewriteCond described in 
http://httpd.apache.org/docs/mod/mod_rewrite.html#RewriteCond  (Special Note: 2)

an example configuration that fails is:

RewriteEngine   On                                                             
                                                                               
                                                   
RewriteLog      /tmp/rewrite.log                                               
                                                                               
                                                   
RewriteLogLevel 9                                                              
                                                                               
                                                   
                                                                               
                                                          RewriteCond
%{ENV:HTTP_HOST}  domain                                                       
                                                                               
                        
RewriteRule  ^/$    http://another.domain  [R]          

/tmp/rewrite.log says:
(2) init rewrite engine with requested uri /
(3) applying pattern '^/$' to uri '/'
(4) RewriteCond: input='' pattern='domain' => not-matched
(1) pass through /

in this case in env-variable is just _not_ substituted, as input=''.
when i'm using 
  RewriteCond %{HTTP_HOST}       domain
instead of
  RewriteCond %{ENV:HTTP_HOST}  domain
everything works well (even debug-messages in /tmp/rewrite.log are ok)

unfortunately it's not as simple as using the working version instead of the
broken, but i need to rewrite based on environment-variables that are no
apache-server-variables.

when testing wheather the env-variable is correctly set, using a simple cgi,
it displays correct values for the env-variable.

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