I was working through a trial install of oscMax v2.5beta3 and following the security setup instructions.

In doing so I found a number of changes that I wanted to make and the first one that I have completed is the Check Permissions add-on.

You can download Check_permissions_2.5
(Edit: this file was updated 20110312)

The references that you can use are included in the zip file README etc.

Also you may want to look at

The oscMax Security documentation which is what started me on this update

The oscMax link to version 1.3 of Check Permissions if you want to compare the code I added

The oscMax wiki page on Check Permissions that I added with the details regarding both the install of 1.3 or 2.5