Add an action hook before file loading process for Multisite medias starts in wp-includes/ms-files.php

[ShinichiN]

My suggestion is adding a action hook in wp-includes/ms-files.php so that plugins can stop or do something before the file loading process begins.

I wanted to limit access to files if visitor is not logged in to the network.

[ShinichiN]

First patch

[ericlewis]

Can you expand on how you want to "limit access to files to non-logged in users"? There's probably a way to do this already, which wouldn't require a new hook.

All files are publicly accessible if someone has the URL. You would need to do something at the .htaccess level to change this.

[jeremyfelt]

Providing some sort of method of password protection for static assets is appealing, though if handled through ms-files.php, it would likely be security through obscurity as the files all have static locations.

As ms-files was deprecated in 3.5 - see #19235 - and per #20527, we likely won't be adding enhancements to the current core ms-files. As nacin mentions in that ticket - "Rather than using wp-includes/ms-files.php, you could always use wp-content/ms-files.php and change your rewrite rules."

[ShinichiN]

Thank you ericlewis and jeremy felt.

I'll have a look at /wp-content/ms-files.php to change rewrites.