156 lines
3.4 KiB
Go
156 lines
3.4 KiB
Go
package qtum
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import (
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"bytes"
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"encoding/json"
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"io"
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"github.com/martinboehm/btcd/wire"
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"github.com/martinboehm/btcutil/chaincfg"
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"spacecruft.org/spacecruft/blockbook/bchain"
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"spacecruft.org/spacecruft/blockbook/bchain/coins/btc"
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"spacecruft.org/spacecruft/blockbook/bchain/coins/utils"
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)
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// magic numbers
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const (
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MainnetMagic wire.BitcoinNet = 0xf1cfa6d3
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TestnetMagic wire.BitcoinNet = 0x0d221506
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)
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// chain parameters
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var (
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MainNetParams chaincfg.Params
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TestNetParams chaincfg.Params
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)
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func init() {
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MainNetParams = chaincfg.MainNetParams
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MainNetParams.Net = MainnetMagic
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MainNetParams.PubKeyHashAddrID = []byte{58}
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MainNetParams.ScriptHashAddrID = []byte{50}
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MainNetParams.Bech32HRPSegwit = "qc"
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TestNetParams = chaincfg.TestNet3Params
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TestNetParams.Net = TestnetMagic
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TestNetParams.PubKeyHashAddrID = []byte{120}
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TestNetParams.ScriptHashAddrID = []byte{110}
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TestNetParams.Bech32HRPSegwit = "tq"
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}
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// QtumParser handle
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type QtumParser struct {
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*btc.BitcoinParser
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}
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// NewQtumParser returns new DashParser instance
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func NewQtumParser(params *chaincfg.Params, c *btc.Configuration) *QtumParser {
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return &QtumParser{
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BitcoinParser: btc.NewBitcoinParser(params, c),
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}
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}
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// GetChainParams contains network parameters for the main Qtum network,
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// the regression test Qtum network, the test Qtum network and
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// the simulation test Qtum network, in this order
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func GetChainParams(chain string) *chaincfg.Params {
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if !chaincfg.IsRegistered(&MainNetParams) {
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err := chaincfg.Register(&MainNetParams)
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if err == nil {
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err = chaincfg.Register(&TestNetParams)
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}
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if err != nil {
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panic(err)
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}
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}
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switch chain {
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case "test":
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return &TestNetParams
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default:
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return &MainNetParams
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}
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}
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func parseBlockHeader(r io.Reader) (*wire.BlockHeader, error) {
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h := &wire.BlockHeader{}
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err := h.Deserialize(r)
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if err != nil {
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return nil, err
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}
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// hash_state_root 32
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// hash_utxo_root 32
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// hash_prevout_stake 32
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// hash_prevout_n 4
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buf := make([]byte, 100)
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_, err = io.ReadFull(r, buf)
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if err != nil {
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return nil, err
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}
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sigLength, err := wire.ReadVarInt(r, 0)
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if err != nil {
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return nil, err
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}
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sigBuf := make([]byte, sigLength)
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_, err = io.ReadFull(r, sigBuf)
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if err != nil {
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return nil, err
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}
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return h, err
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}
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func (p *QtumParser) ParseBlock(b []byte) (*bchain.Block, error) {
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r := bytes.NewReader(b)
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w := wire.MsgBlock{}
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h, err := parseBlockHeader(r)
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if err != nil {
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return nil, err
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}
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err = utils.DecodeTransactions(r, 0, wire.WitnessEncoding, &w)
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if err != nil {
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return nil, err
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}
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txs := make([]bchain.Tx, len(w.Transactions))
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for ti, t := range w.Transactions {
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txs[ti] = p.TxFromMsgTx(t, false)
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}
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return &bchain.Block{
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BlockHeader: bchain.BlockHeader{
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Size: len(b),
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Time: h.Timestamp.Unix(),
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},
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Txs: txs,
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}, nil
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}
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// ParseTxFromJson parses JSON message containing transaction and returns Tx struct
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func (p *QtumParser) ParseTxFromJson(msg json.RawMessage) (*bchain.Tx, error) {
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var tx bchain.Tx
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err := json.Unmarshal(msg, &tx)
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if err != nil {
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return nil, err
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}
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for i := range tx.Vout {
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vout := &tx.Vout[i]
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// convert vout.JsonValue to big.Int and clear it, it is only temporary value used for unmarshal
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vout.ValueSat, err = p.AmountToBigInt(vout.JsonValue)
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if err != nil {
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return nil, err
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}
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vout.JsonValue = ""
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if vout.ScriptPubKey.Addresses == nil {
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vout.ScriptPubKey.Addresses = []string{}
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}
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}
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return &tx, nil
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}
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