mod_rewrite'ing for 'virtual hosts'?

[jsquared]

Hi. My file structure is set up as such:

/usr/home/mysite.com/htdocs is where the root of my web documents are.

Additionally, I have:

/usr/home/mysite.com/projects/
/usr/home/mysite.com/images/
/usr/home/mysite.com/junk/

and so on.

I would like to create a rewrite rule which specifies that any request for:

mysite.com/{rest_of_path}
or
www.mysite.com/{rest_of_path}

is mapped to

/usr/home/mysite.com/htdocs/{rest_of_path}

However, anything else, e.g.

{subdomain}.mysite.com/{rest_of_path}

is mapped to

/usr/home/mysite.com/{subdomain}/{rest_of_path}

In other words, if {subdomain} == 'www' or isn't specified, look in mysite.com/htdocs. Otherwise, look in mysite.com/{subdomain}.

Any help would be greatly appreciated. I'm having trouble with the conditional portion of the rule. Thanks!

 

[pfournier]

Can we see what you've done so far?

You've looked at

http://httpd.apache.org/docs/vhosts/mass.html

I suppose?

P.S. This directory layout would (unless specifically blocked) allow htdocs.mysite.com as an alias to [ignore]www.mysite.com[/ignore].