func (self *XEth) PushTx(encodedTx string) (string, error) {
tx := new(types.Transaction)
err := rlp.DecodeBytes(common.FromHex(encodedTx), tx)
if err != nil {
glog.V(logger.Error).Infoln(err)
return "", err
}
err = self.backend.TxPool().Add(tx, true)
if 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
}
func (self *BlockProcessor) ApplyTransaction(gp GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, gp)
if err != nil {
return nil, nil, err
}
// Update the state with pending changes
statedb.SyncIntermediate()
usedGas.Add(usedGas, gas)
receipt := types.NewReceipt(statedb.Root().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.SetLogs(logs)
receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
glog.V(logger.Debug).Infoln(receipt)
// Notify all subscribers
if !transientProcess {
go self.eventMux.Post(TxPostEvent{tx})
go self.eventMux.Post(logs)
}
return receipt, gas, err
}
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())}
}
func (self *Env) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
exe := self.vm(nil, data, gas, price, value)
if self.vmTest {
caller.ReturnGas(gas, price)
nonce := self.state.GetNonce(caller.Address())
obj := self.state.GetOrNewStateObject(crypto.CreateAddress(caller.Address(), nonce))
return nil, nil, obj
} else {
return exe.Create(caller)
}
}
// exec executes the given code and executes within the contextAddr context.
func (self *Execution) exec(contextAddr *common.Address, code []byte, caller vm.ContextRef) (ret []byte, err error) {
env := self.env
evm := self.evm
// Depth check execution. Fail if we're trying to execute above the
// limit.
if env.Depth() > int(params.CallCreateDepth.Int64()) {
caller.ReturnGas(self.Gas, self.price)
return nil, vm.DepthError
}
if !env.CanTransfer(env.State().GetStateObject(caller.Address()), self.value) {
caller.ReturnGas(self.Gas, self.price)
return nil, ValueTransferErr("insufficient funds to transfer value. Req %v, has %v", self.value, env.State().GetBalance(caller.Address()))
}
var createAccount bool
if self.address == nil {
// Generate a new address
nonce := env.State().GetNonce(caller.Address())
env.State().SetNonce(caller.Address(), nonce+1)
addr := crypto.CreateAddress(caller.Address(), nonce)
self.address = &addr
createAccount = true
}
snapshot := env.State().Copy()
var (
from = env.State().GetStateObject(caller.Address())
to *state.StateObject
)
if createAccount {
to = env.State().CreateAccount(*self.address)
} else {
to = env.State().GetOrNewStateObject(*self.address)
}
vm.Transfer(from, to, self.value)
context := vm.NewContext(caller, to, self.value, self.Gas, self.price)
context.SetCallCode(contextAddr, code)
ret, err = evm.Run(context, self.input)
if err != nil {
env.State().Set(snapshot)
}
return
}
func (self *XEth) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
// this minimalistic recoding is enough (works for natspec.js)
var jsontx = fmt.Sprintf(`{"params":[{"to":"%s","data": "%s"}]}`, toStr, codeStr)
if !self.ConfirmTransaction(jsontx) {
err := fmt.Errorf("Transaction not confirmed")
return "", err
}
if len(toStr) > 0 && toStr != "0x" && !isAddress(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 = DefaultGas()
} else {
gas = common.Big(gasStr)
}
if len(gasPriceStr) == 0 {
price = self.DefaultGasPrice()
} else {
price = common.Big(gasPriceStr)
}
data = common.FromHex(codeStr)
if len(toStr) == 0 {
contractCreation = true
}
if gas.Cmp(big.NewInt(90000)) < 0 {
glog.Infof("(Gas set to %v for hash: %x. Miners can ignore transactions with a low amount of gas.", gas, toStr)
}
// 2015-05-18 Is this still needed?
// TODO if no_private_key then
//if _, exists := p.register[args.From]; exists {
// p.register[args.From] = append(p.register[args.From], args)
//} else {
/*
account := accounts.Get(common.FromHex(args.From))
if account != nil {
if account.Unlocked() {
if !unlockAccount(account) {
return
}
}
result, _ := account.Transact(common.FromHex(args.To), common.FromHex(args.Value), common.FromHex(args.Gas), common.FromHex(args.GasPrice), common.FromHex(args.Data))
if len(result) > 0 {
*reply = common.ToHex(result)
}
} else if _, exists := p.register[args.From]; exists {
p.register[ags.From] = append(p.register[args.From], args)
}
*/
self.transactMu.Lock()
defer self.transactMu.Unlock()
var nonce uint64
if len(nonceStr) != 0 {
nonce = common.Big(nonceStr).Uint64()
} else {
state := self.backend.TxPool().State()
nonce = state.GetNonce(from)
}
var tx *types.Transaction
if contractCreation {
tx = types.NewContractCreation(nonce, value, gas, price, data)
} else {
tx = types.NewTransaction(nonce, to, value, gas, price, data)
}
signed, err := self.sign(tx, from, false)
if err != nil {
return "", err
}
if err = self.backend.TxPool().Add(signed, true); err != nil {
return "", err
}
if contractCreation {
addr := crypto.CreateAddress(from, nonce)
glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signed.Hash().Hex(), addr.Hex())
} else {
glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signed.Hash().Hex(), tx.To().Hex())
}
return signed.Hash().Hex(), nil
}
