Deprecation: #87889 - TYPO3 backend entry point script deprecated

See forge#87889

Description

The TYPO3 backend entry point script /typo3/index.php is no longer needed and deprecated in favor of handling all backend and frontend requests with /index.php. It is still in place in case webserver configuration has not been adapted yet.

Note that the maintenance tool is still available via /typo3/install.php.

Impact

The TYPO3 backend route path is made configurable in order to protected against application admin interface infrastructure enumeration (WSTG-CONF-05). Therefore, all requests are handled by the PHP script /index.php in order to allow for variable admin interface URLs. (via $GLOBALS['TYPO3_CONF_VARS']['BE']['entryPoint']).

Affected installations

All installations using the TYPO3 backend /typo3.

Migration

There is a silent update in place which automatically updates the webserver configuration file when accessing the install tool, at least for Apache and Microsoft IIS webservers.

Note: This does not work if you are not using the default configuration, which is shipped with Core and automatically applied during the TYPO3 installation process, as basis.

If you however use a custom web server configuration you may adapt as follows:

Apache configuration

It is most important to rewrite all typo3/* requests to /index.php, but also RewriteCond %{REQUEST_FILENAME} !-d should be removed in order for a request to /typo3/ to be directly served via /index.php instead of the deprecated entry point /typo3/index.php.

Apache configuration before:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^typo3/(.*)$ %{ENV:CWD}typo3/index.php [QSA,L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^.*$ %{ENV:CWD}index.php [QSA,L]

Apache configuration after:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^typo3/(.*)$ %{ENV:CWD}index.php [QSA,L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^.*$ %{ENV:CWD}index.php [QSA,L]

Nginx configuration

Nginx configuration before:

 location /typo3/ {
     absolute_redirect off;
     try_files $uri /typo3/index.php$is_args$args;
 }

Nginx configuration after:

 location /typo3/ {
     absolute_redirect off;
     try_files $uri /index.php$is_args$args;
 }