Send one subdomain to subdirectory, everything else to file with parameter - apache

Question

Hoo-boy I've been struggling with this one all day.
The redirect from the subdomains to the script files with subdomain passed in as a parameter work fine.
When one particular subdomain is actually a real folder (phpmyadmin), I can't seem to make it work, at least not with the previously mentioned rule in place.
Here's my stuff:
<VirtualHost *.domain.com:443>
ServerName *.domain.com
ServerAlias *.domain.com
DocumentRoot /home/domain/web
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www.* [NC]
RewriteCond %{HTTP_HOST} ^(phpmyadmin)\.domain\.com
RewriteCond %{REQUEST_URI} !^phpmyadmin
RewriteRule ^(.*)$ /phpmyadmin [L]
RewriteCond %{HTTP_HOST} ^([^\.]+)\.domain\.com
RewriteRule ^\/script2$ /public/script2.php?param1=%1 [L]
RewriteCond %{HTTP_HOST} ^([^\.]+)\.domain\.com
RewriteRule ^(.*) /public/script1.php?param1=%1 [L]
<Directory /home/domain/web>
Options -Indexes IncludesNOEXEC FollowSymLinks -MultiViews
AllowOverride All
Order allow,deny
Allow from all
</Directory>
SSLEngine on
SSLCertificateFile /home/domain/crt
SSLCertificateKeyFile /home/domain/key
</VirtualHost>
Any ideas?

Answer 1

2 problems with:
RewriteCond %{HTTP_HOST} !^www.* [NC]
RewriteCond %{HTTP_HOST} ^(phpmyadmin)\.domain\.com
RewriteCond %{REQUEST_URI} !^phpmyadmin
RewriteRule ^(.*)$ /phpmyadmin [L]
In your target redirect, you do not change the domain. By just using /phpmyadmin, you're not directing to www.domain.com/phpmyadmin, you're directing to phpmyadmin.domain.com/phpmyadmin, which is likely to cause an infinite redirect loop since it will keep matching the phpmyadmin subdomain each redirect. Use:
RewriteRule ^(.*)$ http://www.domain.com/phpmyadmin [L]
Unlike RewriteRule where the initial / is not used, RewriteCond %{REQUEST_URI} does need the leading slash like so:
RewriteCond %{REQUEST_URI} !^/phpmyadmin
Failing to do so means its not matching the directed /phpmyadmin, leading to another potential self-matching infinite redirect loop.
Also you don't need
RewriteCond %{HTTP_HOST} !^www. [NC]
since your url would never start with www and also start with phpmyadmin. Matching
RewriteCond %{HTTP_HOST} ^(phpmyadmin)\.domain\.com
automatically implies the NOT www match condition is also true