You can use LocationMatch
with this regex:
<LocationMatch "^/.">
</LocationMatch>
Single DOT after ^/
will make sure there is at least one character after http://my.domain.com/
hence causing it to not to match landing page.
More details about LocationMatch
Testing:
Create this directive as:
<LocationMatch "^/(?<sitename>.+)">
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI}?u=%{env:MATCH_SITENAME} [L,R=302]
</LocationMatch>
Now to test I am doing this:
curl -kI -A "Chrome" -L 'http://localhost/index.php'
HTTP/1.1 302 Found
Date: Mon, 11 Jul 2016 22:31:37 GMT
Server: Apache/2.4.12 (Unix) OpenSSL/1.0.1j PHP/5.6.9 mod_wsgi/3.5 Python/2.7.9
Location: http://www.localhost/index.php?u=index.php
Content-Type: text/html; charset=iso-8859-1
HTTP/1.1 200 OK
Date: Mon, 11 Jul 2016 22:31:37 GMT
Server: Apache/2.4.12 (Unix) OpenSSL/1.0.1j PHP/5.6.9 mod_wsgi/3.5 Python/2.7.9
X-Powered-By: PHP/5.6.9
Content-Type: text/html; charset=UTF-8
curl -kI -A "Chrome" -L 'http://localhost/user.php'
HTTP/1.1 302 Found
Date: Mon, 11 Jul 2016 22:33:57 GMT
Server: Apache/2.4.12 (Unix) OpenSSL/1.0.1j PHP/5.6.9 mod_wsgi/3.5 Python/2.7.9
Location: http://www.localhost/user.php?u=user.php
Content-Type: text/html; charset=iso-8859-1
HTTP/1.1 200 OK
Date: Mon, 11 Jul 2016 22:33:57 GMT
Server: Apache/2.4.12 (Unix) OpenSSL/1.0.1j PHP/5.6.9 mod_wsgi/3.5 Python/2.7.9
X-Powered-By: PHP/5.6.9
Content-Type: text/html; charset=UTF-8
curl -kI -A "Chrome" -L 'http://localhost'
HTTP/1.1 200 OK
Date: Mon, 11 Jul 2016 22:32:47 GMT
Server: Apache/2.4.12 (Unix) OpenSSL/1.0.1j PHP/5.6.9 mod_wsgi/3.5 Python/2.7.9
X-Powered-By: PHP/5.6.9
Content-Type: text/html; charset=UTF-8
You can clearly see that www
redirection doesn't happen when I request landing page but happens when I request /index.php