facebook and linkedin connect (full profile)

We want to implement facebook and linkedin connect on our site to log in customers. We want to fetch their full profile from linkedin and from facebook including friends. We have login working for both, but not correctly, you will have to debug and correct it and ensure that all data is collected into mysql when user signs up. For linkedin, we already have an existing similar script that does this, you will have to implement the login and ensure that it works properly, that full profile data is fetched completely. Bid if you have done this before and can replicate such functionality easily.