AuthUserFile /usr/local/www/security/pgsql.htpasswd
AuthGroupFile /dev/null
AuthName "PostgreSQL Website Administration"
AuthType Basic
require valid-user

RewriteEngine On

# Don't ask me why, but /admin without trailing slash doesn't
# work without this.
RewriteRule /admin$ /admin/ [L,R]

# Preview pages
RewriteRule ^(preview.html) - [L]

# Now the normal rewrite rule
RewriteRule ^(.*)$ /system/handler.php?page=admin/$1 [QSA,L]