I am trying to make an application for the Mac App Store that will shut down/sleep the Mac after a user-set time. I have tried to use AppleScript, but that won't work if I am going to use it in Sandbox mode, I have tried to Google for a solution, but I cant seem to figure it out.
Hope someone can give me a hint or link to relevant documentation.
edit: made it more precise to what I desire to accomplish.
There is no way to do this. You may try to get a temporary-exception to run "shutdown" or "halt" thru BSD-layer but I doubt that such an app will pass the App Store review as these are tasks that require superuser / admin rights.