mirror of https://github.com/poanetwork/quorum.git
311 lines
7.9 KiB
Go
311 lines
7.9 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package types
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import (
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"crypto/ecdsa"
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"errors"
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"fmt"
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"io"
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"math/big"
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"sync/atomic"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/rlp"
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)
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var ErrInvalidSig = errors.New("invalid v, r, s values")
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func IsContractAddr(addr []byte) bool {
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return len(addr) == 0
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}
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type Transaction struct {
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data txdata
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// caches
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hash atomic.Value
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size atomic.Value
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from atomic.Value
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}
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type txdata struct {
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AccountNonce uint64
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Price, GasLimit *big.Int
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Recipient *common.Address `rlp:"nil"` // nil means contract creation
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Amount *big.Int
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Payload []byte
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V byte // signature
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R, S *big.Int // signature
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}
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func NewContractCreation(nonce uint64, amount, gasLimit, gasPrice *big.Int, data []byte) *Transaction {
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if len(data) > 0 {
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data = common.CopyBytes(data)
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}
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return &Transaction{data: txdata{
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AccountNonce: nonce,
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Recipient: nil,
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Amount: new(big.Int).Set(amount),
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GasLimit: new(big.Int).Set(gasLimit),
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Price: new(big.Int).Set(gasPrice),
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Payload: data,
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R: new(big.Int),
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S: new(big.Int),
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}}
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}
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func NewTransaction(nonce uint64, to common.Address, amount, gasLimit, gasPrice *big.Int, data []byte) *Transaction {
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if len(data) > 0 {
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data = common.CopyBytes(data)
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}
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d := txdata{
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AccountNonce: nonce,
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Recipient: &to,
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Payload: data,
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Amount: new(big.Int),
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GasLimit: new(big.Int),
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Price: new(big.Int),
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R: new(big.Int),
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S: new(big.Int),
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}
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if amount != nil {
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d.Amount.Set(amount)
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}
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if gasLimit != nil {
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d.GasLimit.Set(gasLimit)
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}
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if gasPrice != nil {
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d.Price.Set(gasPrice)
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}
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return &Transaction{data: d}
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}
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func (tx *Transaction) EncodeRLP(w io.Writer) error {
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return rlp.Encode(w, &tx.data)
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}
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func (tx *Transaction) DecodeRLP(s *rlp.Stream) error {
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_, size, _ := s.Kind()
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err := s.Decode(&tx.data)
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if err == nil {
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tx.size.Store(common.StorageSize(rlp.ListSize(size)))
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}
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return err
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}
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func (tx *Transaction) Data() []byte { return common.CopyBytes(tx.data.Payload) }
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func (tx *Transaction) Gas() *big.Int { return new(big.Int).Set(tx.data.GasLimit) }
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func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.data.Price) }
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func (tx *Transaction) Value() *big.Int { return new(big.Int).Set(tx.data.Amount) }
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func (tx *Transaction) Nonce() uint64 { return tx.data.AccountNonce }
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func (tx *Transaction) To() *common.Address {
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if tx.data.Recipient == nil {
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return nil
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} else {
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to := *tx.data.Recipient
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return &to
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}
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}
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// Hash hashes the RLP encoding of tx.
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// It uniquely identifies the transaction.
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func (tx *Transaction) Hash() common.Hash {
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if hash := tx.hash.Load(); hash != nil {
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return hash.(common.Hash)
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}
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v := rlpHash(tx)
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tx.hash.Store(v)
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return v
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}
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// SigHash returns the hash to be signed by the sender.
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// It does not uniquely identify the transaction.
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func (tx *Transaction) SigHash() common.Hash {
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return rlpHash([]interface{}{
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tx.data.AccountNonce,
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tx.data.Price,
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tx.data.GasLimit,
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tx.data.Recipient,
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tx.data.Amount,
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tx.data.Payload,
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})
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}
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func (tx *Transaction) Size() common.StorageSize {
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if size := tx.size.Load(); size != nil {
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return size.(common.StorageSize)
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}
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c := writeCounter(0)
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rlp.Encode(&c, &tx.data)
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tx.size.Store(common.StorageSize(c))
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return common.StorageSize(c)
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}
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func (tx *Transaction) From() (common.Address, error) {
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if from := tx.from.Load(); from != nil {
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return from.(common.Address), nil
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}
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pubkey, err := tx.publicKey()
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if err != nil {
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return common.Address{}, err
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}
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var addr common.Address
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copy(addr[:], crypto.Sha3(pubkey[1:])[12:])
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tx.from.Store(addr)
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return addr, nil
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}
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// Cost returns amount + gasprice * gaslimit.
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func (tx *Transaction) Cost() *big.Int {
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total := new(big.Int).Mul(tx.data.Price, tx.data.GasLimit)
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total.Add(total, tx.data.Amount)
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return total
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}
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func (tx *Transaction) SignatureValues() (v byte, r *big.Int, s *big.Int) {
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return tx.data.V, new(big.Int).Set(tx.data.R), new(big.Int).Set(tx.data.S)
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}
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func (tx *Transaction) publicKey() ([]byte, error) {
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if !crypto.ValidateSignatureValues(tx.data.V, tx.data.R, tx.data.S) {
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return nil, ErrInvalidSig
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}
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// encode the signature in uncompressed format
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r, s := tx.data.R.Bytes(), tx.data.S.Bytes()
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sig := make([]byte, 65)
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copy(sig[32-len(r):32], r)
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copy(sig[64-len(s):64], s)
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sig[64] = tx.data.V - 27
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// recover the public key from the signature
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hash := tx.SigHash()
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pub, err := crypto.Ecrecover(hash[:], sig)
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if err != nil {
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glog.V(logger.Error).Infof("Could not get pubkey from signature: ", err)
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return nil, err
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}
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if len(pub) == 0 || pub[0] != 4 {
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return nil, errors.New("invalid public key")
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}
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return pub, nil
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}
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func (tx *Transaction) WithSignature(sig []byte) (*Transaction, error) {
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if len(sig) != 65 {
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panic(fmt.Sprintf("wrong size for signature: got %d, want 65", len(sig)))
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}
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cpy := &Transaction{data: tx.data}
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cpy.data.R = new(big.Int).SetBytes(sig[:32])
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cpy.data.S = new(big.Int).SetBytes(sig[32:64])
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cpy.data.V = sig[64] + 27
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return cpy, nil
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}
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func (tx *Transaction) SignECDSA(prv *ecdsa.PrivateKey) (*Transaction, error) {
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h := tx.SigHash()
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sig, err := crypto.Sign(h[:], prv)
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if err != nil {
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return nil, err
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}
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return tx.WithSignature(sig)
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}
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func (tx *Transaction) String() string {
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var from, to string
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if f, err := tx.From(); err != nil {
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from = "[invalid sender]"
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} else {
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from = fmt.Sprintf("%x", f[:])
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}
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if tx.data.Recipient == nil {
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to = "[contract creation]"
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} else {
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to = fmt.Sprintf("%x", tx.data.Recipient[:])
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}
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enc, _ := rlp.EncodeToBytes(&tx.data)
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return fmt.Sprintf(`
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TX(%x)
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Contract: %v
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From: %s
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To: %s
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Nonce: %v
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GasPrice: %v
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GasLimit %v
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Value: %v
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Data: 0x%x
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V: 0x%x
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R: 0x%x
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S: 0x%x
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Hex: %x
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`,
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tx.Hash(),
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len(tx.data.Recipient) == 0,
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from,
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to,
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tx.data.AccountNonce,
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tx.data.Price,
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tx.data.GasLimit,
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tx.data.Amount,
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tx.data.Payload,
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tx.data.V,
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tx.data.R,
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tx.data.S,
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enc,
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)
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}
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// Transaction slice type for basic sorting.
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type Transactions []*Transaction
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func (s Transactions) Len() int { return len(s) }
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func (s Transactions) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (s Transactions) GetRlp(i int) []byte {
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enc, _ := rlp.EncodeToBytes(s[i])
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return enc
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}
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type TxByNonce struct{ Transactions }
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func (s TxByNonce) Less(i, j int) bool {
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return s.Transactions[i].data.AccountNonce < s.Transactions[j].data.AccountNonce
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}
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type TxByPrice struct{ Transactions }
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func (s TxByPrice) Less(i, j int) bool {
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return s.Transactions[i].data.Price.Cmp(s.Transactions[j].data.Price) > 0
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}
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type TxByPriceAndNonce struct{ Transactions }
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func (s TxByPriceAndNonce) Less(i, j int) bool {
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// we can ignore the error here. Sorting shouldn't care about validness
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ifrom, _ := s.Transactions[i].From()
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jfrom, _ := s.Transactions[j].From()
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// favour nonce if they are from the same recipient
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if ifrom == jfrom {
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return s.Transactions[i].data.AccountNonce < s.Transactions[j].data.AccountNonce
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}
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return s.Transactions[i].data.Price.Cmp(s.Transactions[j].data.Price) > 0
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}
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