I want to intergate moodle in my school to the Yale CAS system which I modified the loging process using MySql,but I found that moodle has a CAS module upon LDAP, I don't want to use LDAP, so can anyone help me to achieve this?
I thought to modify the source code to achieve this, but I couldn't understand the logining process in details, so any one can help me ? I apericate you very much!

a middle school student from china
my E-mail :chenjiexmcx@163.com