func (s *Server) isAllowedByPolicy(p *peer.Peer, req *msg.OcReq) (bool, msg.OcRespStatus) {
fmt.Printf("is allowed? %v\n", s)
paidPv, err := p.AmountPaid(SERVER_PAYMENT_MIN_CONF, s.BtcConf)
if err != nil {
return false, msg.SERVER_ERROR
}
consumedPv, err := p.AmountConsumed()
if err != nil {
return false, msg.SERVER_ERROR
}
fmt.Printf("paid: %v, consumed: %v\n", paidPv, consumedPv)
// policies := s.Conf.MatchingPolicies(req.Service, req.Method)
// for _, policy := range policies {
// fmt.Printf("check against policy: %v\n", policy)
// switch policy.Cmd {
// case conf.ALLOW:
// continue
// case conf.DENY:
// return false, msg.ACCESS_DENIED
// case conf.MIN_FEE:
// min := policy.Args[0].(msg.PaymentValue)
// fmt.Printf("min fee: %v, pt: %v\n", min, req.PaymentType)
// if req.PaymentType != msg.ATTACHED {
// return false, msg.PAYMENT_REQUIRED
// }
// // TODO(ortutay): implement
// return false, msg.SERVER_ERROR
// }
// }
return true, msg.OK
}
func (s *Server) checkBalance(p *peer.Peer) *msg.OcResp {
balance, err := p.Balance(SERVER_PAYMENT_MIN_CONF, s.BtcConf)
if err != nil {
return msg.NewRespError(msg.SERVER_ERROR)
}
fmt.Printf("balance: %v\n", balance)
if balance.Currency != msg.BTC {
panic("TODO: support other currencies")
}
maxBalance, err := s.Conf.PolicyForCmd(conf.MAX_BALANCE)
if err != nil {
// TODO(ortutay): handle more configuration around max balance
panic(err)
}
maxAllowed := maxBalance.Args[0].(*msg.PaymentValue).Amount
fmt.Printf("max balance: %v\n", maxBalance.Args[0])
if balance.Amount > maxAllowed {
addr, err := p.PaymentAddr(-1, s.BtcConf)
if err != nil {
return msg.NewRespError(msg.SERVER_ERROR)
}
// TODO(ortutay): a clever client will notice that they can pay off just a
// small amount to stay just at the edge of the max balance. they do not
// much by doing this, and may waste money on miner fees, but nevertheless,
// we could have some smarter handling for that situation.
pr := msg.PaymentRequest{
Amount: balance.Amount,
Currency: balance.Currency,
Addr: addr,
}
body, err := json.Marshal(&pr)
if err != nil {
return msg.NewRespError(msg.SERVER_ERROR)
}
return msg.NewRespErrorWithBody(msg.PLEASE_PAY, []byte(body))
}
return nil
}