110 lines
2.3 KiB
Go
110 lines
2.3 KiB
Go
package types
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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ethtypes "github.com/ethereum/go-ethereum/core/types"
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)
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var (
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_ TxData = &LegacyTx{}
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_ TxData = &AccessListTx{}
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_ TxData = &DynamicFeeTx{}
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)
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// TxData implements the Ethereum transaction tx structure. It is used
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// solely as intended in Ethereum abiding by the protocol.
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type TxData interface {
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// TODO: embed ethtypes.TxData. See https://github.com/ethereum/go-ethereum/issues/23154
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TxType() byte
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Copy() TxData
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GetChainID() *big.Int
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GetAccessList() ethtypes.AccessList
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GetData() []byte
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GetNonce() uint64
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GetGas() uint64
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GetGasPrice() *big.Int
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GetGasTipCap() *big.Int
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GetGasFeeCap() *big.Int
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GetValue() *big.Int
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GetTo() *common.Address
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GetRawSignatureValues() (v, r, s *big.Int)
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SetSignatureValues(chainID, v, r, s *big.Int)
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AsEthereumData() ethtypes.TxData
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Validate() error
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Fee() *big.Int
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Cost() *big.Int
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}
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func NewTxDataFromTx(tx *ethtypes.Transaction) TxData {
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var txData TxData
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switch tx.Type() {
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// case ethtypes.DynamicFeeTxType:
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// txData = newDynamicFeeTx(tx)
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case ethtypes.AccessListTxType:
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txData = newAccessListTx(tx)
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default:
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txData = newLegacyTx(tx)
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}
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return txData
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}
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// DeriveChainID derives the chain id from the given v parameter.
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//
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// CONTRACT: v value is either:
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//
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// - {0,1} + CHAIN_ID * 2 + 35, if EIP155 is used
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// - {0,1} + 27, otherwise
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// Ref: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-155.md
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func DeriveChainID(v *big.Int) *big.Int {
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if v == nil || v.Sign() < 1 {
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return nil
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}
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if v.BitLen() <= 64 {
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v := v.Uint64()
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if v == 27 || v == 28 {
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return new(big.Int)
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}
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if v < 35 {
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return nil
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}
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// V MUST be of the form {0,1} + CHAIN_ID * 2 + 35
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return new(big.Int).SetUint64((v - 35) / 2)
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}
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v = new(big.Int).Sub(v, big.NewInt(35))
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return v.Div(v, big.NewInt(2))
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}
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func rawSignatureValues(vBz, rBz, sBz []byte) (v, r, s *big.Int) {
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if len(vBz) > 0 {
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v = new(big.Int).SetBytes(vBz)
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}
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if len(rBz) > 0 {
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r = new(big.Int).SetBytes(rBz)
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}
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if len(sBz) > 0 {
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s = new(big.Int).SetBytes(sBz)
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}
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return v, r, s
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}
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func fee(gasPrice *big.Int, gas uint64) *big.Int {
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gasLimit := new(big.Int).SetUint64(gas)
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return new(big.Int).Mul(gasPrice, gasLimit)
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}
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func cost(fee, value *big.Int) *big.Int {
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if value != nil {
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return new(big.Int).Add(fee, value)
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}
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return fee
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}
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