func NewTx(tx *types.Transaction) *Transaction { sender, err := tx.From() if err != nil { return nil } hash := tx.Hash().Hex() var receiver string if to := tx.To(); to != nil { receiver = to.Hex() } else { from, _ := tx.From() receiver = crypto.CreateAddress(from, tx.Nonce()).Hex() } createsContract := core.MessageCreatesContract(tx) var data string if createsContract { data = strings.Join(core.Disassemble(tx.Data()), "\n") } else { data = common.ToHex(tx.Data()) } return &Transaction{ref: tx, Hash: hash, Value: common.CurrencyToString(tx.Value()), Address: receiver, Contract: createsContract, Gas: tx.Gas().String(), GasPrice: tx.GasPrice().String(), Data: data, Sender: sender.Hex(), CreatesContract: createsContract, RawData: common.ToHex(tx.Data())} }
// validateTx checks whether a transaction is valid according // to the consensus rules. func (pool *TxPool) validateTx(tx *types.Transaction) error { // Validate sender var ( from common.Address err error ) // Drop transactions under our own minimal accepted gas price if pool.minGasPrice.Cmp(tx.GasPrice()) > 0 { return ErrCheap } // Validate the transaction sender and it's sig. Throw // if the from fields is invalid. if from, err = tx.From(); err != nil { return ErrInvalidSender } // Make sure the account exist. Non existent accounts // haven't got funds and well therefor never pass. if !pool.currentState().HasAccount(from) { return ErrNonExistentAccount } // Last but not least check for nonce errors if pool.currentState().GetNonce(from) > tx.Nonce() { return ErrNonce } // Check the transaction doesn't exceed the current // block limit gas. if pool.gasLimit().Cmp(tx.Gas()) < 0 { return ErrGasLimit } // Transactions can't be negative. This may never happen // using RLP decoded transactions but may occur if you create // a transaction using the RPC for example. if tx.Value().Cmp(common.Big0) < 0 { return ErrNegativeValue } // Transactor should have enough funds to cover the costs // cost == V + GP * GL if pool.currentState().GetBalance(from).Cmp(tx.Cost()) < 0 { return ErrInsufficientFunds } // Should supply enough intrinsic gas if tx.Gas().Cmp(IntrinsicGas(tx.Data())) < 0 { return ErrIntrinsicGas } return nil }
func newTx(t *types.Transaction) *tx { from, _ := t.From() var to string if t := t.To(); t != nil { to = t.Hex() } return &tx{ tx: t, To: to, From: from.Hex(), Value: t.Value().String(), Nonce: strconv.Itoa(int(t.Nonce())), Data: "0x" + common.Bytes2Hex(t.Data()), GasLimit: t.Gas().String(), GasPrice: t.GasPrice().String(), Hash: t.Hash().Hex(), } }
func NewTransactionRes(tx *types.Transaction) *TransactionRes { if tx == nil { return nil } var v = new(TransactionRes) v.Hash = newHexData(tx.Hash()) v.Nonce = newHexNum(tx.Nonce()) // v.BlockHash = // v.BlockNumber = // v.TxIndex = from, _ := tx.From() v.From = newHexData(from) v.To = newHexData(tx.To()) v.Value = newHexNum(tx.Value()) v.Gas = newHexNum(tx.Gas()) v.GasPrice = newHexNum(tx.GasPrice()) v.Input = newHexData(tx.Data()) return v }
func verifyTxFields(txTest TransactionTest, decodedTx *types.Transaction) (err error) { defer func() { if recovered := recover(); recovered != nil { buf := make([]byte, 64<<10) buf = buf[:runtime.Stack(buf, false)] err = fmt.Errorf("%v\n%s", recovered, buf) } }() decodedSender, err := decodedTx.From() if err != nil { return err } expectedSender := mustConvertAddress(txTest.Sender) if expectedSender != decodedSender { return fmt.Errorf("Sender mismatch: %v %v", expectedSender, decodedSender) } expectedData := mustConvertBytes(txTest.Transaction.Data) if !bytes.Equal(expectedData, decodedTx.Data()) { return fmt.Errorf("Tx input data mismatch: %#v %#v", expectedData, decodedTx.Data()) } expectedGasLimit := mustConvertBigInt(txTest.Transaction.GasLimit, 16) if expectedGasLimit.Cmp(decodedTx.Gas()) != 0 { return fmt.Errorf("GasLimit mismatch: %v %v", expectedGasLimit, decodedTx.Gas()) } expectedGasPrice := mustConvertBigInt(txTest.Transaction.GasPrice, 16) if expectedGasPrice.Cmp(decodedTx.GasPrice()) != 0 { return fmt.Errorf("GasPrice mismatch: %v %v", expectedGasPrice, decodedTx.GasPrice()) } expectedNonce := mustConvertUint(txTest.Transaction.Nonce, 16) if expectedNonce != decodedTx.Nonce() { return fmt.Errorf("Nonce mismatch: %v %v", expectedNonce, decodedTx.Nonce()) } v, r, s := decodedTx.SignatureValues() expectedR := mustConvertBigInt(txTest.Transaction.R, 16) if r.Cmp(expectedR) != 0 { return fmt.Errorf("R mismatch: %v %v", expectedR, r) } expectedS := mustConvertBigInt(txTest.Transaction.S, 16) if s.Cmp(expectedS) != 0 { return fmt.Errorf("S mismatch: %v %v", expectedS, s) } expectedV := mustConvertUint(txTest.Transaction.V, 16) if uint64(v) != expectedV { return fmt.Errorf("V mismatch: %v %v", expectedV, v) } expectedTo := mustConvertAddress(txTest.Transaction.To) if decodedTx.To() == nil { if expectedTo != common.BytesToAddress([]byte{}) { // "empty" or "zero" address return fmt.Errorf("To mismatch when recipient is nil (contract creation): %v", expectedTo) } } else { if expectedTo != *decodedTx.To() { return fmt.Errorf("To mismatch: %v %v", expectedTo, *decodedTx.To()) } } expectedValue := mustConvertBigInt(txTest.Transaction.Value, 16) if expectedValue.Cmp(decodedTx.Value()) != 0 { return fmt.Errorf("Value mismatch: %v %v", expectedValue, decodedTx.Value()) } return nil }