<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteBase /
  RewriteRule ^index\.php$ - [L]
  RewriteRule ^$ - [L]
  RewriteRule ^/$ - [L]

  RewriteCond %{REQUEST_FILENAME} -f
  RewriteCond %{REQUEST_FILENAME} !\.(css|js|xml|json|png|jpg|ico|ttf|woff|woff2)$
  RewriteRule ".*" "/401" [END,R]

  RewriteCond %{REQUEST_FILENAME} -d
  RewriteRule ".*" "/401" [END,R]

  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !\.(css|js|xml|json)$
  RewriteRule .*\?? /?uri=%{REQUEST_URI} [QSA]
</IfModule>