Downloading & Viewing ePub Books

I have the following requirements for an iPad App and would like to know if it's possible to implement them:

1. Download ePub books and view them in iPads iBooks reader
2. Install the downloaded book in the devices itunes library, so开发者_开发技巧 that they are accessibly from the iBooks applications

You can't import them in iTunes, but in iBooks. Should be possible.

This should do it.

http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIDocumentInteractionController_class/Reference/Reference.html