// This function is only used when loading UTXO database
func NewUTXO(db *qdb.DB, k qdb.KeyType, rec *chain.OneWalkRecord) uint32 {
if rec.IsP2KH() || rec.IsP2SH() {
if adr := btc.NewAddrFromPkScript(rec.Script(), common.Testnet); adr != nil {
if crec, ok := CachedAddrs[adr.Hash160]; ok {
value := rec.Value()
idx := rec.TxPrevOut()
crec.Value += value
utxo := new(chain.OneUnspentTx)
utxo.TxPrevOut = *idx
utxo.Value = value
utxo.MinedAt = rec.BlockHeight()
utxo.BtcAddr = CacheUnspent[crec.CacheIndex].BtcAddr
CacheUnspent[crec.CacheIndex].AllUnspentTx = append(CacheUnspent[crec.CacheIndex].AllUnspentTx, utxo)
CacheUnspentIdx[idx.UIdx()] = &OneCachedUnspentIdx{Index: crec.CacheIndex, Record: utxo}
}
}
} else if len(StealthAdCache) > 0 && rec.IsStealthIdx() {
StealthNotify(db, k, rec)
}
return 0
}
// It is assumed that you call this function only after rec.IsStealthIdx() was true
func CheckStealthRec(db *qdb.DB, k qdb.KeyType, rec *chain.OneWalkRecord,
addr *btc.BtcAddr, d []byte, inbrowse bool) (fl uint32, uo *chain.OneUnspentTx) {
sth_scr := rec.Script()
sa := addr.StealthAddr
if sa.CheckNonce(sth_scr[3:]) {
vo := rec.VOut() // get the spending output
var spend_v []byte
if inbrowse {
spend_v = db.GetNoMutex(qdb.KeyType(uint64(k) ^ uint64(vo) ^ uint64(vo+1)))
} else {
spend_v = db.Get(qdb.KeyType(uint64(k) ^ uint64(vo) ^ uint64(vo+1)))
}
if spend_v != nil {
rec = chain.NewWalkRecord(spend_v)
if rec.IsP2KH() {
var h160 [20]byte
c := btc.StealthDH(sth_scr[7:40], d)
spen_exp := btc.DeriveNextPublic(sa.SpendKeys[0][:], c)
btc.RimpHash(spen_exp, h160[:])
if bytes.Equal(rec.Script()[3:23], h160[:]) {
adr := btc.NewAddrFromHash160(h160[:], btc.AddrVerPubkey(common.CFG.Testnet))
uo = rec.ToUnspent(adr)
adr.StealthAddr = sa
adr.Extra = addr.Extra
uo.StealthC = c
}
} else {
fl = chain.WALK_NOMORE
}
} else {
fl = chain.WALK_NOMORE
}
}
return
}