func exec(env vm.Environment, caller vm.ContractRef, address, codeAddr *common.Address, input, code []byte, gas, gasPrice, value *big.Int) (ret []byte, addr common.Address, err error) {
evm := vm.NewVm(env)
// Depth check execution. Fail if we're trying to execute above the
// limit.
if env.Depth() > int(params.CallCreateDepth.Int64()) {
caller.ReturnGas(gas, gasPrice)
return nil, common.Address{}, vm.DepthError
}
if !env.CanTransfer(caller.Address(), value) {
caller.ReturnGas(gas, gasPrice)
return nil, common.Address{}, ValueTransferErr("insufficient funds to transfer value. Req %v, has %v", value, env.Db().GetBalance(caller.Address()))
}
var createAccount bool
if address == nil {
// Generate a new address
nonce := env.Db().GetNonce(caller.Address())
env.Db().SetNonce(caller.Address(), nonce+1)
addr = crypto.CreateAddress(caller.Address(), nonce)
address = &addr
createAccount = true
}
snapshot := env.MakeSnapshot()
var (
from = env.Db().GetAccount(caller.Address())
to vm.Account
)
if createAccount {
to = env.Db().CreateAccount(*address)
} else {
if !env.Db().Exist(*address) {
to = env.Db().CreateAccount(*address)
} else {
to = env.Db().GetAccount(*address)
}
}
env.Transfer(from, to, value)
contract := vm.NewContract(caller, to, value, gas, gasPrice)
contract.SetCallCode(codeAddr, code)
ret, err = evm.Run(contract, input)
if err != nil {
env.SetSnapshot(snapshot) //env.Db().Set(snapshot)
}
return ret, addr, err
}
// SendTransaction will create a transaction for the given transaction argument, sign it and submit it to the
// transaction pool.
func (s *PublicTransactionPoolAPI) SendTransaction(args SendTxArgs) (common.Hash, error) {
if args.Gas == nil {
args.Gas = rpc.NewHexNumber(defaultGas)
}
if args.GasPrice == nil {
args.GasPrice = rpc.NewHexNumber(defaultGasPrice)
}
if args.Value == nil {
args.Value = rpc.NewHexNumber(0)
}
s.txMu.Lock()
defer s.txMu.Unlock()
if args.Nonce == nil {
args.Nonce = rpc.NewHexNumber(s.txPool.State().GetNonce(args.From))
}
var tx *types.Transaction
contractCreation := (args.To == common.Address{})
if contractCreation {
tx = types.NewContractCreation(args.Nonce.Uint64(), args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
} else {
tx = types.NewTransaction(args.Nonce.Uint64(), args.To, args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
}
signedTx, err := s.sign(args.From, tx)
if err != nil {
return common.Hash{}, err
}
s.txPool.SetLocal(signedTx)
if err := s.txPool.Add(signedTx); err != nil {
return common.Hash{}, nil
}
if contractCreation {
addr := crypto.CreateAddress(args.From, args.Nonce.Uint64())
glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signedTx.Hash().Hex(), addr.Hex())
} else {
glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signedTx.Hash().Hex(), tx.To().Hex())
}
return signedTx.Hash(), nil
}
// ApplyTransaction attemps to apply a transaction to the given state database
// and uses the input parameters for its environment.
//
// ApplyTransactions returns the generated receipts and vm logs during the
// execution of the state transition phase.
func ApplyTransaction(bc *BlockChain, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int) (*types.Receipt, vm.Logs, *big.Int, error) {
_, gas, err := ApplyMessage(NewEnv(statedb, bc, tx, header), tx, gp)
if err != nil {
return nil, nil, nil, err
}
// Update the state with pending changes
usedGas.Add(usedGas, gas)
receipt := types.NewReceipt(statedb.IntermediateRoot().Bytes(), usedGas)
receipt.TxHash = tx.Hash()
receipt.GasUsed = new(big.Int).Set(gas)
if MessageCreatesContract(tx) {
from, _ := tx.From()
receipt.ContractAddress = crypto.CreateAddress(from, tx.Nonce())
}
logs := statedb.GetLogs(tx.Hash())
receipt.Logs = logs
receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
glog.V(logger.Debug).Infoln(receipt)
return receipt, logs, gas, err
}
// SendRawTransaction will add the signed transaction to the transaction pool.
// The sender is responsible for signing the transaction and using the correct nonce.
func (s *PublicTransactionPoolAPI) SendRawTransaction(encodedTx string) (string, error) {
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(encodedTx), tx); err != nil {
return "", err
}
s.txPool.SetLocal(tx)
if err := s.txPool.Add(tx); err != nil {
return "", err
}
if tx.To() == nil {
from, err := tx.From()
if err != nil {
return "", err
}
addr := crypto.CreateAddress(from, tx.Nonce())
glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)
} else {
glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
}
return tx.Hash().Hex(), nil
}
// Transact forms a transaction from the given arguments and submits it to the
// transactio pool for execution.
func (be *registryAPIBackend) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
if len(toStr) > 0 && toStr != "0x" && !common.IsHexAddress(toStr) {
return "", errors.New("invalid address")
}
var (
from = common.HexToAddress(fromStr)
to = common.HexToAddress(toStr)
value = common.Big(valueStr)
gas *big.Int
price *big.Int
data []byte
contractCreation bool
)
if len(gasStr) == 0 {
gas = big.NewInt(90000)
} else {
gas = common.Big(gasStr)
}
if len(gasPriceStr) == 0 {
price = big.NewInt(10000000000000)
} else {
price = common.Big(gasPriceStr)
}
data = common.FromHex(codeStr)
if len(toStr) == 0 {
contractCreation = true
}
nonce := be.txPool.State().GetNonce(from)
if len(nonceStr) != 0 {
nonce = common.Big(nonceStr).Uint64()
}
var tx *types.Transaction
if contractCreation {
tx = types.NewContractCreation(nonce, value, gas, price, data)
} else {
tx = types.NewTransaction(nonce, to, value, gas, price, data)
}
acc := accounts.Account{from}
signature, err := be.am.Sign(acc, tx.SigHash().Bytes())
if err != nil {
return "", err
}
signedTx, err := tx.WithSignature(signature)
if err != nil {
return "", err
}
be.txPool.SetLocal(signedTx)
if err := be.txPool.Add(signedTx); err != nil {
return "", nil
}
if contractCreation {
addr := crypto.CreateAddress(from, nonce)
glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signedTx.Hash().Hex(), addr.Hex())
} else {
glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signedTx.Hash().Hex(), tx.To().Hex())
}
return signedTx.Hash().Hex(), nil
}
// InsertReceiptChain attempts to complete an already existing header chain with
// transaction and receipt data.
func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain []types.Receipts) (int, error) {
self.wg.Add(1)
defer self.wg.Done()
// Collect some import statistics to report on
stats := struct{ processed, ignored int32 }{}
start := time.Now()
// Create the block importing task queue and worker functions
tasks := make(chan int, len(blockChain))
for i := 0; i < len(blockChain) && i < len(receiptChain); i++ {
tasks <- i
}
close(tasks)
errs, failed := make([]error, len(tasks)), int32(0)
process := func(worker int) {
for index := range tasks {
block, receipts := blockChain[index], receiptChain[index]
// Short circuit insertion if shutting down or processing failed
if atomic.LoadInt32(&self.procInterrupt) == 1 {
return
}
if atomic.LoadInt32(&failed) > 0 {
return
}
// Short circuit if the owner header is unknown
if !self.HasHeader(block.Hash()) {
errs[index] = fmt.Errorf("containing header #%d [%x…] unknown", block.Number(), block.Hash().Bytes()[:4])
atomic.AddInt32(&failed, 1)
return
}
// Skip if the entire data is already known
if self.HasBlock(block.Hash()) {
atomic.AddInt32(&stats.ignored, 1)
continue
}
// Compute all the non-consensus fields of the receipts
transactions, logIndex := block.Transactions(), uint(0)
for j := 0; j < len(receipts); j++ {
// The transaction hash can be retrieved from the transaction itself
receipts[j].TxHash = transactions[j].Hash()
// The contract address can be derived from the transaction itself
if MessageCreatesContract(transactions[j]) {
from, _ := transactions[j].From()
receipts[j].ContractAddress = crypto.CreateAddress(from, transactions[j].Nonce())
}
// The used gas can be calculated based on previous receipts
if j == 0 {
receipts[j].GasUsed = new(big.Int).Set(receipts[j].CumulativeGasUsed)
} else {
receipts[j].GasUsed = new(big.Int).Sub(receipts[j].CumulativeGasUsed, receipts[j-1].CumulativeGasUsed)
}
// The derived log fields can simply be set from the block and transaction
for k := 0; k < len(receipts[j].Logs); k++ {
receipts[j].Logs[k].BlockNumber = block.NumberU64()
receipts[j].Logs[k].BlockHash = block.Hash()
receipts[j].Logs[k].TxHash = receipts[j].TxHash
receipts[j].Logs[k].TxIndex = uint(j)
receipts[j].Logs[k].Index = logIndex
logIndex++
}
}
// Write all the data out into the database
if err := WriteBody(self.chainDb, block.Hash(), &types.Body{block.Transactions(), block.Uncles()}); err != nil {
errs[index] = fmt.Errorf("failed to write block body: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
if err := WriteBlockReceipts(self.chainDb, block.Hash(), receipts); err != nil {
errs[index] = fmt.Errorf("failed to write block receipts: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
if err := WriteMipmapBloom(self.chainDb, block.NumberU64(), receipts); err != nil {
errs[index] = fmt.Errorf("failed to write log blooms: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
if err := WriteTransactions(self.chainDb, block); err != nil {
errs[index] = fmt.Errorf("failed to write individual transactions: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
if err := WriteReceipts(self.chainDb, receipts); err != nil {
errs[index] = fmt.Errorf("failed to write individual receipts: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
atomic.AddInt32(&stats.processed, 1)
}
}
// Start as many worker threads as goroutines allowed
pending := new(sync.WaitGroup)
for i := 0; i < runtime.GOMAXPROCS(0); i++ {
pending.Add(1)
go func(id int) {
defer pending.Done()
process(id)
}(i)
}
pending.Wait()
// If anything failed, report
if failed > 0 {
for i, err := range errs {
if err != nil {
return i, err
}
}
}
if atomic.LoadInt32(&self.procInterrupt) == 1 {
glog.V(logger.Debug).Infoln("premature abort during receipt chain processing")
return 0, nil
}
// Update the head fast sync block if better
self.mu.Lock()
head := blockChain[len(errs)-1]
if self.GetTd(self.currentFastBlock.Hash()).Cmp(self.GetTd(head.Hash())) < 0 {
if err := WriteHeadFastBlockHash(self.chainDb, head.Hash()); err != nil {
glog.Fatalf("failed to update head fast block hash: %v", err)
}
self.currentFastBlock = head
}
self.mu.Unlock()
// Report some public statistics so the user has a clue what's going on
first, last := blockChain[0], blockChain[len(blockChain)-1]
glog.V(logger.Info).Infof("imported %d receipt(s) (%d ignored) in %v. #%d [%x… / %x…]", stats.processed, stats.ignored,
time.Since(start), last.Number(), first.Hash().Bytes()[:4], last.Hash().Bytes()[:4])
return 0, nil
}