how to use facebook,google ,twitters's id for own iphone app

[beeshma r]

HI friends

i want to create Own iphone app and i want use facebook,google,twitter,openid id for login.
Also i want use access all  friend list like...

for example

one  person going to login my app.Then my app will download all mail id's ,friends list like etc
How this is possible?

please give good suggestion for this....