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Final StakeContract UTXO API Extension #13

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Final StakeContract UTXO API Extension #13

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33 changes: 30 additions & 3 deletions api/worker.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,6 @@ package api
import (
"blockbook/bchain"
"blockbook/bchain/coins/eth"
"blockbook/bchain/coins/pivx"
"blockbook/common"
"blockbook/db"
"bytes"
Expand Down Expand Up @@ -54,6 +53,17 @@ func (w *Worker) getAddressesFromVout(vout *bchain.Vout) (bchain.AddressDescript
return addrDesc, a, s, err
}

// returns true if scriptPubKey is P2CS
func isP2CS(addrs []string) bool {
if len(addrs) != 2 {
return false
}
// dirty hack (to remove multisig false positives)
// !TODO: implement flag in Vin and Vout objects
return (len(addrs[0]) > 0 &&
(addrs[0][0:1] == "S" || addrs[0][0:1] == "W"))
}

// setSpendingTxToVout is helper function, that finds transaction that spent given output and sets it to the output
// there is no direct index for the operation, it must be found using addresses -> txaddresses -> tx
func (w *Worker) setSpendingTxToVout(vout *Vout, txid string, height uint32) error {
Expand Down Expand Up @@ -878,9 +888,13 @@ func (w *Worker) getAddrDescUtxo(addrDesc bchain.AddressDescriptor, ba *db.AddrB
vad, err := w.chainParser.GetAddrDescFromVout(vout)
if err == nil && bytes.Equal(addrDesc, vad) {
// report only outpoints that are not spent in mempool
stakeContract := false
_, e := spentInMempool[bchainTx.Txid+strconv.Itoa(i)]
addr := vout.ScriptPubKey.Addresses
if !e {
stakeContract := pivx.IsP2CSScript(addrDesc)
if isP2CS(addr) {
stakeContract = true
}
r = append(r, Utxo{
Txid: bchainTx.Txid,
Vout: int32(i),
Expand Down Expand Up @@ -919,7 +933,20 @@ func (w *Worker) getAddrDescUtxo(addrDesc bchain.AddressDescriptor, ba *db.AddrB
if err != nil {
return nil, err
}
stakeContract := pivx.IsP2CSScript(addrDesc)
stakeContract := false
ta, err := w.db.GetTxAddresses(txid)
if err != nil {
return nil, err
}
addr, _, err := ta.Outputs[utxo.Vout].Addresses(w.chainParser)
if err != nil {
return nil, err
}
if len(addr) > 1 {
if isP2CS(addr) {
stakeContract = true
}
}
_, e := spentInMempool[txid+strconv.Itoa(int(utxo.Vout))]
if !e {
r = append(r, Utxo{
Expand Down