LDAP_get_generalized_time_value
ret = LDAP_get_generalized_time_value(db, msg, "createTimestamp",
ret = LDAP_get_generalized_time_value(db, msg, "modifyTimestamp",
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidStart",
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidEnd",
ret = LDAP_get_generalized_time_value(db, msg, "krb5PasswordEnd",