Where is the redirection configured?

Question

I have a redirection but I don't know where it is activated?

I have installed a PHP application called GARRADIN. There is an .htaccess containing this line:

RewriteRule admin/plugin/(.*?)/(.*) /admin/plugin.php?_p=$1&_u=$2 [QSA,L]

This redirection works. plugin.php is called but parameters $1 and $2 are empty. $_GET['_p'] returns nothing into the script.

To understand why parameters are not transmitted, I have tried to modify .htaccess but whatever I do, it is not taken into account. It seems that this redirection is configured somewhere else?

What I did: - I have inserted an error into .htaccess, and I obtain a server error => OK, .htaccess is taken into account. - I modified the line to redirect to XXXXplugin.php but plugin.php is still called. - renamed .htaccess to BAK.htaccess => redirection is still working! - I have reset the browser cache, used another browser => same redirection.

so WHERE the redirection is configured?

THX for you help.

Complete .htaccess:

<IfModule mod_rewrite.c>
    RewriteEngine on
    RewriteRule admin/plugin/(.*?)/(.*) /admin/XXXXXXXXXXXXplugin.php?_p=$1&_u=$2 [QSA,L]
    RewriteRule f/([\d\w]+)/(.*) /file.php?id=$1&file=$2 [QSA,L]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule .* /index.php [QSA,L]
</IfModule>

<IfModule !mod_rewrite.c>
    ErrorDocument 404 /index.php
</IfModule>

Answer 1

@MrWhite took me to the right direction. I had to deactivate MultiViews, not at the top of the .htaccess (which leads to a server error) but into the virtual host configuration file, and into a section.

<Directory /home/gestion_o2form/public_html/www>
    Options -Indexes +IncludesNOEXEC +FollowSymLinks -MultiViews <= HERE
    allow from all
    AllowOverride All Options=ExecCGI,Includes,IncludesNOEXEC,Indexes,-MultiViews,SymLinksIfOwnerMatch
    Require all granted
    AddType application/x-httpd-php .php
</Directory>

And IT WORK!

THANKS to all especially @MrWhite

Answer 2

The behaviour you are seeing is indicative of having MultiViews (part of mod_negotiation) enabled in your server config (it is not enabled by default).

Since /admin is a physical directory and plugin corresponds to a file basename in that directory, mod_negotiation searches for a suitable response by testing various file extensions. In this case it will issue an internal subrequest for /admin/plugin.php - without any query parameters. This happens before mod_rewrite, hence why your updated directive does not appear to do anything.

You need to disable MultiViews.

At the top of your .htaccess file add the following:

Options -MultiViews

---

This redirection works.

This is more commonly called an internal rewrite. A "redirect" implies an external redirect.

Note that the regex admin/plugin/(.*?)/(.*) potentially matches more than is probably intended, as you are missing a start-of-string anchor (^). So it would also match something like /foobaradmin/plugin//.