Call log/Data/SMS library

Call log: Basic4android Search: CallLog
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You cannot access old Sms message. You can only intercept new messages with the Phone library.

Thanks Erel, more than intercepting them I just would like to know any time that the phone sends a message.

Same thing for the calls, I'll like to know if there's any function that can let me know when the phone makes a call and when the phone ends the call, is there some code or library that could help me with that?

Thanks,
Sergio

Sorry Erel, I didn't completely read your answer, I see that you provided related links for the three cases I was asking for, thanks a lot