htaccess rewrite to maintenance page if exists and not IP, else bootstrap - apache

Question

How would I rewrite all requests to maintenance.php, if it exists, except images, and except an IP white list.
If maintenance.php does not exist it should rewrite to a bootstrap (index.php) if the requested file does not exist.
If maintenance.php does exist and the IP is in the white list, then it should rewrite to a bootstrap (index.php) if the requested file does not exist.
I have tried many variations of the following:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{DOCUMENT_ROOT}/maintenance.php -f
RewriteCond %{REQUEST_FILENAME} !\.(jpg|png|gif)$
RewriteCond %{REMOTE_ADDR} !^123\.123\.123\.123$
RewriteCond %{REMOTE_ADDR} !^111\.111\.111\.111$
RewriteRule . maintenance.php [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php
</IfModule>

Answer 1

I would do it in reverse. Rewrite to the bootstrap if the maintenance page doesn't exist or the IP is valid.
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{DOCUMENT_ROOT}/maintenance.php !-f [OR]
RewriteCond %{REMOTE_ADDR} ^123\.123\.123\.123$ [OR]
RewriteCond %{REMOTE_ADDR} ^111\.111\.111\.111$
RewriteRule . index.php [L]
RewriteCond %{DOCUMENT_ROOT}/maintenance.php -f
RewriteCond %{REQUEST_FILENAME} !\.(jpg|png|gif)$
RewriteCond %{REMOTE_ADDR} !^123\.123\.123\.123$ [OR]
RewriteCond %{REMOTE_ADDR} !^111\.111\.111\.111$
RewriteRule . maintenance.php [L]
So, basically it will run index.php IF:
(Not a file)
&& (Not a dir)
&& (
(Maintenance Doesn't Exist)
|| (Remote Addr == 123.123.123.123)
|| (Remote Addr == 111.111.111)
)
We could expand this out using propositional logic, but why bother...

Answer 2

This is what I ended up using
I hope it help any future visitors:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{DOCUMENT_ROOT}/maintenance.php !-f [OR]
RewriteCond %{HTTP:X-Forwarded-For} ^(x\.x\.x\.x|y\.y\.y\.y|z\.z\.z\.z)$ [OR]
RewriteRule . index.php [L]
RewriteCond %{DOCUMENT_ROOT}/maintenance.php -f
RewriteCond %{REQUEST_FILENAME} !\.(jpg|png|gif)$
RewriteCond %{HTTP:X-Forwarded-For} !^(x\.x\.x\.x|y\.y\.y\.y|z\.z\.z\.z)$
RewriteRule . maintenance.php [L]
</IfModule>
Also #ircmaxell gets the tick because he helped me come to this solution.

Answer 3

Try enclosing your IP addresses within brackets in the same RewriteCond:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{DOCUMENT_ROOT}/maintenance.php -f
RewriteCond %{REQUEST_FILENAME} !\.(jpg|png|gif)$
RewriteCond %{REMOTE_ADDR} !^(123\.123\.123\.123|111\.111\.111\.111)$
RewriteRule . maintenance.php [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php
</IfModule>