Add to Facebook function for IOS app

I have a magazine app where I want to allow users to add the current magazine they are reading to their facebook wall. This needs to use the Facebook API. You can include this into a very simple example app + instructions on how to implement this in my app Functionality: - from a UIPopup 2 options shall be shown: Share on FaceBook Share with friends (thru eMail) Facebook: - facebook signup needs to be shown - user logs into their account - after succesfull login, they should be able to post the information fot this magazine (an image, description text and link) to their wall. Share with friends. - Same functionality, only that it should send it thru eMail to a friend (text and link only) -As i need this to be dynamic, image, text and link should be filled thru variables.