Authentication of proxy over own module

[Petr Hracek <phracek2@xxxxxxxxx>]

Hello apache users,

I would like to explain my problem.
I have developed the module which is used for authorization to web pages.
It works fine without problem but I would like to use that module for authorization
of "proxy" requests as well.
Proxy requests are not defined in settings of browser (in Firefox Tools->Options->LAN settings -> Manual configuration of proxy).

In apache conf. file I have following:

<VirtualHost _default_:443>

SSLEngine on
SSLProxyEngine on

RewriteEngine on
RewriteCond %{REQUEST_METHOD} ^TRACE
RewriteRule .* - [F]
RewriteMap foo txt:/opt/apache/conf/foo.map
RewriteRule ^/PAC$ http://192.168.0.23:8080/PACAdmin [P]
RewriteRule ^/PAC/(.*) http://192.168.0.23:8080/PACAdmin/$1 [P]
RewriteRule ^/([^/]+)$     ${foo:$1|/$1} [L]
RewriteRule ^/([^/]+)/(.*)     ${foo:$1|/opt/apache/htdocs/ssldocs/$1}/$2 [L]

<IfModule mod_authz_host.c>
   <Directory />
      Options +Indexes +Multiviews
      AuthType FOOM
      require   valid-user
      satisfy Any
   </Directory>
</IfModule>

<Location "/PAC/">
   ProxyPass http://192.168.0.23:8080/PACAdmin
   ProxyPassReverse http://192.168.0.23:8080/PACAdmin
   ProxyPassReverseCookie   /PACAdmin   /PAC
   Order Allow,deny
   Allow from all
</Location>

How I can used own module for authorization location /PAC/?
When user will enter URL http://192.168.0.23:8080/PAC
then firstly my own module will authorized that page and afterwards location /PAC will be shown.
Is it possible to do it somehow?

Thanks for your help.
-- 
Best Regards / S pozdravem
Petr Hracek