Module 2 Help?

[Alexander Chen]

Dear Sirs:

How could write a module the function as hereunder:
1. Keep /usr/local/etc/raddb/users empty.
2. All Access-Request are all return Access-Accept.
3. I wish the function like rlm_sql (just modify authorization)
Could you give me sample code.
My config is:
/usr/local/etc/raddb/sites-available/default
authorize {
	preprocess
	chap
	mschap
	suffix
	eap {
		ok = return
	}
	unix
	#files
	#Alex:sql
	mymodule
	expiration
	logintime
	pap
}
authenticate {
	Auth-Type PAP {
		pap
	}
	Auth-Type CHAP {
		chap
	}
	Auth-Type MS-CHAP {
		mschap
	}
	unix
	eap
}
preacct {
	preprocess
	acct_unique
	suffix
	files
}
accounting {
	detail
	unix
	#Alex:sql
	radutmp
	attr_filter.accounting_response
}
session {
	radutmp
}
post-auth {
	exec
	Post-Auth-Type REJECT {
		attr_filter.access_reject
	}
}
pre-proxy {
}
post-proxy {
	eap
}
Thanks.