I am trying to set up a multisite intranet (using subdomains) where content on each sub-site is only accessible to users logged into their respective site. The problem I am having is trying to restrict access to uploaded files (e.g. http://example.org/wp-content/uploads/2011/12/dummy.pdf) to logged in users only.
Similar to How to Protect Uploads, if User is not Logged In?, how would I enable one of the solutions proposed by hakre or Frank Bueltge for a multisite installation?
I have been scouring the net and Wordress Answers but haven’t managed to find something that I can get to work. Related answers are:
Also, I am new to PHP and still learning how WordPress works under the hood, so detailed information about what I need to do and what goes where would be much appreciated.