Example of Apache mod_macro

macros.conf

<Macro Site $domain>
        Use Log $domain
        Use ForceDomain $domain
        Use GrantAccess /
</Macro>

<Macro Domain $domain>
        ServerName $domain
        ServerAlias www.$domain
</Macro>

<Macro GrantAccess $path>
        <Location $path>
                Order allow,deny
                Allow from all
        </Location>
</Macro>

<Macro Log $site>
    ErrorLog /var/log/apache2/sites/$site_error_log
    CustomLog /var/log/apache2/sites/$site_access_log combined
</Macro>

<Macro ForceDomain $domain>
        RewriteEngine on
        RewriteCond %{HTTP_HOST} ^$domain [NC]
        RewriteCond %{HTTPS} =on
        RewriteRule (.*) http://$domain/$1 [R,L,QSA]
        RewriteCond %{HTTP_HOST} ^$domain [NC]
        RewriteCond %{HTTPS} !=on
        RewriteRule (.*) https://$domain/$1 [R,L,QSA]
</Macro>

<Macro ProxyPass $path $dest>
        ProxyPass $path $dest
        ProxyPassReverse $path $dest
</Macro>