Example #1
0
func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
	var (
		data  = common.FromHex(tx["data"])
		gas   = common.Big(tx["gasLimit"])
		price = common.Big(tx["gasPrice"])
		value = common.Big(tx["value"])
		nonce = common.Big(tx["nonce"]).Uint64()
		caddr = common.HexToAddress(env["currentCoinbase"])
	)

	var to *common.Address
	if len(tx["to"]) > 2 {
		t := common.HexToAddress(tx["to"])
		to = &t
	}
	// Set pre compiled contracts
	vm.Precompiled = vm.PrecompiledContracts()

	snapshot := statedb.Copy()
	coinbase := statedb.GetOrNewStateObject(caddr)
	coinbase.SetGasLimit(common.Big(env["currentGasLimit"]))

	key, _ := hex.DecodeString(tx["secretKey"])
	addr := crypto.PubkeyToAddress(crypto.ToECDSA(key).PublicKey)
	message := NewMessage(addr, to, data, value, gas, price, nonce)
	vmenv := NewEnvFromMap(statedb, env, tx)
	vmenv.origin = addr
	ret, _, err := core.ApplyMessage(vmenv, message, coinbase)
	if core.IsNonceErr(err) || core.IsInvalidTxErr(err) || state.IsGasLimitErr(err) {
		statedb.Set(snapshot)
	}
	statedb.SyncObjects()

	return ret, vmenv.state.Logs(), vmenv.Gas, err
}
Example #2
0
func StateObjectFromAccount(db common.Database, addr string, account Account) *state.StateObject {
	obj := state.NewStateObject(common.HexToAddress(addr), db)
	obj.SetBalance(common.Big(account.Balance))

	if common.IsHex(account.Code) {
		account.Code = account.Code[2:]
	}
	obj.SetCode(common.Hex2Bytes(account.Code))
	obj.SetNonce(common.Big(account.Nonce).Uint64())

	return obj
}
Example #3
0
func run(ctx *cli.Context) {
	vm.Debug = ctx.GlobalBool(DebugFlag.Name)
	vm.ForceJit = ctx.GlobalBool(ForceJitFlag.Name)
	vm.EnableJit = !ctx.GlobalBool(DisableJitFlag.Name)

	glog.SetToStderr(true)

	db, _ := ethdb.NewMemDatabase()
	statedb := state.New(common.Hash{}, db)
	sender := statedb.CreateAccount(common.StringToAddress("sender"))
	receiver := statedb.CreateAccount(common.StringToAddress("receiver"))
	receiver.SetCode(common.Hex2Bytes(ctx.GlobalString(CodeFlag.Name)))

	vmenv := NewEnv(statedb, common.StringToAddress("evmuser"), common.Big(ctx.GlobalString(ValueFlag.Name)))

	tstart := time.Now()
	ret, e := vmenv.Call(
		sender,
		receiver.Address(),
		common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)),
		common.Big(ctx.GlobalString(GasFlag.Name)),
		common.Big(ctx.GlobalString(PriceFlag.Name)),
		common.Big(ctx.GlobalString(ValueFlag.Name)),
	)
	vmdone := time.Since(tstart)

	if ctx.GlobalBool(DumpFlag.Name) {
		fmt.Println(string(statedb.Dump()))
	}
	vm.StdErrFormat(vmenv.StructLogs())

	if ctx.GlobalBool(SysStatFlag.Name) {
		var mem runtime.MemStats
		runtime.ReadMemStats(&mem)
		fmt.Printf("vm took %v\n", vmdone)
		fmt.Printf(`alloc:      %d
tot alloc:  %d
no. malloc: %d
heap alloc: %d
heap objs:  %d
num gc:     %d
`, mem.Alloc, mem.TotalAlloc, mem.Mallocs, mem.HeapAlloc, mem.HeapObjects, mem.NumGC)
	}

	fmt.Printf("OUT: 0x%x", ret)
	if e != nil {
		fmt.Printf(" error: %v", e)
	}
	fmt.Println()
}
Example #4
0
func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
	env := NewEnv(state)

	env.origin = common.HexToAddress(exeValues["caller"])
	//env.parent = common.Hex2Bytes(envValues["previousHash"])
	env.coinbase = common.HexToAddress(envValues["currentCoinbase"])
	env.number = common.Big(envValues["currentNumber"])
	env.time = common.Big(envValues["currentTimestamp"])
	env.difficulty = common.Big(envValues["currentDifficulty"])
	env.gasLimit = common.Big(envValues["currentGasLimit"])
	env.Gas = new(big.Int)

	return env
}
Example #5
0
func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, string, error) {
	statedb := self.State().State().Copy()
	var from *state.StateObject
	if len(fromStr) == 0 {
		accounts, err := self.backend.AccountManager().Accounts()
		if err != nil || len(accounts) == 0 {
			from = statedb.GetOrNewStateObject(common.Address{})
		} else {
			from = statedb.GetOrNewStateObject(accounts[0].Address)
		}
	} else {
		from = statedb.GetOrNewStateObject(common.HexToAddress(fromStr))
	}

	from.SetBalance(common.MaxBig)
	from.SetGasLimit(common.MaxBig)

	msg := callmsg{
		from:     from,
		gas:      common.Big(gasStr),
		gasPrice: common.Big(gasPriceStr),
		value:    common.Big(valueStr),
		data:     common.FromHex(dataStr),
	}
	if len(toStr) > 0 {
		addr := common.HexToAddress(toStr)
		msg.to = &addr
	}

	if msg.gas.Cmp(big.NewInt(0)) == 0 {
		msg.gas = DefaultGas()
	}

	if msg.gasPrice.Cmp(big.NewInt(0)) == 0 {
		msg.gasPrice = self.DefaultGasPrice()
	}

	header := self.CurrentBlock().Header()
	vmenv := core.NewEnv(statedb, self.backend.ChainManager(), msg, header)

	res, gas, err := core.ApplyMessage(vmenv, msg, from)
	return common.ToHex(res), gas.String(), err
}
Example #6
0
func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) {
	var (
		to    = common.HexToAddress(exec["address"])
		from  = common.HexToAddress(exec["caller"])
		data  = common.FromHex(exec["data"])
		gas   = common.Big(exec["gas"])
		price = common.Big(exec["gasPrice"])
		value = common.Big(exec["value"])
	)
	// Reset the pre-compiled contracts for VM tests.
	vm.Precompiled = make(map[string]*vm.PrecompiledAccount)

	caller := state.GetOrNewStateObject(from)

	vmenv := NewEnvFromMap(state, env, exec)
	vmenv.vmTest = true
	vmenv.skipTransfer = true
	vmenv.initial = true
	ret, err := vmenv.Call(caller, to, data, gas, price, value)

	return ret, vmenv.state.Logs(), vmenv.Gas, err
}
Example #7
0
func (bc *ChainManager) Reset() {
	bc.mu.Lock()
	defer bc.mu.Unlock()

	for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
		bc.removeBlock(block)
	}

	bc.cache, _ = lru.New(blockCacheLimit)

	// Prepare the genesis block
	err := WriteBlock(bc.chainDb, bc.genesisBlock)
	if err != nil {
		glog.Fatalln("db err:", err)
	}

	bc.insert(bc.genesisBlock)
	bc.currentBlock = bc.genesisBlock
	bc.makeCache()

	bc.setTotalDifficulty(common.Big("0"))
}
Example #8
0
func (args *HashIndexArgs) UnmarshalJSON(b []byte) (err error) {
	var obj []interface{}
	if err := json.Unmarshal(b, &obj); err != nil {
		return shared.NewDecodeParamError(err.Error())
	}

	if len(obj) < 2 {
		return shared.NewInsufficientParamsError(len(obj), 2)
	}

	arg0, ok := obj[0].(string)
	if !ok {
		return shared.NewInvalidTypeError("hash", "not a string")
	}
	args.Hash = arg0

	arg1, ok := obj[1].(string)
	if !ok {
		return shared.NewInvalidTypeError("index", "not a string")
	}
	args.Index = common.Big(arg1).Int64()

	return nil
}
Example #9
0
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
}
Example #10
0
func (self *XEth) NumberToHuman(balance string) string {
	b := common.Big(balance)

	return common.CurrencyToString(b)
}
Example #11
0
func runVmTest(test VmTest) error {
	db, _ := ethdb.NewMemDatabase()
	statedb := state.New(common.Hash{}, db)
	for addr, account := range test.Pre {
		obj := StateObjectFromAccount(db, addr, account)
		statedb.SetStateObject(obj)
		for a, v := range account.Storage {
			obj.SetState(common.HexToHash(a), common.HexToHash(v))
		}
	}

	// XXX Yeah, yeah...
	env := make(map[string]string)
	env["currentCoinbase"] = test.Env.CurrentCoinbase
	env["currentDifficulty"] = test.Env.CurrentDifficulty
	env["currentGasLimit"] = test.Env.CurrentGasLimit
	env["currentNumber"] = test.Env.CurrentNumber
	env["previousHash"] = test.Env.PreviousHash
	if n, ok := test.Env.CurrentTimestamp.(float64); ok {
		env["currentTimestamp"] = strconv.Itoa(int(n))
	} else {
		env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
	}

	var (
		ret  []byte
		gas  *big.Int
		err  error
		logs state.Logs
	)

	ret, logs, gas, err = RunVm(statedb, env, test.Exec)

	// Compare expected and actual return
	rexp := common.FromHex(test.Out)
	if bytes.Compare(rexp, ret) != 0 {
		return fmt.Errorf("return failed. Expected %x, got %x\n", rexp, ret)
	}

	// Check gas usage
	if len(test.Gas) == 0 && err == nil {
		return fmt.Errorf("gas unspecified, indicating an error. VM returned (incorrectly) successfull")
	} else {
		gexp := common.Big(test.Gas)
		if gexp.Cmp(gas) != 0 {
			return fmt.Errorf("gas failed. Expected %v, got %v\n", gexp, gas)
		}
	}

	// check post state
	for addr, account := range test.Post {
		obj := statedb.GetStateObject(common.HexToAddress(addr))
		if obj == nil {
			continue
		}

		for addr, value := range account.Storage {
			v := obj.GetState(common.HexToHash(addr))
			vexp := common.HexToHash(value)

			if v != vexp {
				return fmt.Errorf("(%x: %s) storage failed. Expected %x, got %x (%v %v)\n", obj.Address().Bytes()[0:4], addr, vexp, v, vexp.Big(), v.Big())
			}
		}
	}

	// check logs
	if len(test.Logs) > 0 {
		lerr := checkLogs(test.Logs, logs)
		if lerr != nil {
			return lerr
		}
	}

	return nil
}
Example #12
0
func runStateTest(test VmTest) error {
	db, _ := ethdb.NewMemDatabase()
	statedb := state.New(common.Hash{}, db)
	for addr, account := range test.Pre {
		obj := StateObjectFromAccount(db, addr, account)
		statedb.SetStateObject(obj)
		for a, v := range account.Storage {
			obj.SetState(common.HexToHash(a), common.HexToHash(v))
		}
	}

	// XXX Yeah, yeah...
	env := make(map[string]string)
	env["currentCoinbase"] = test.Env.CurrentCoinbase
	env["currentDifficulty"] = test.Env.CurrentDifficulty
	env["currentGasLimit"] = test.Env.CurrentGasLimit
	env["currentNumber"] = test.Env.CurrentNumber
	env["previousHash"] = test.Env.PreviousHash
	if n, ok := test.Env.CurrentTimestamp.(float64); ok {
		env["currentTimestamp"] = strconv.Itoa(int(n))
	} else {
		env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
	}

	var (
		ret []byte
		// gas  *big.Int
		// err  error
		logs state.Logs
	)

	ret, logs, _, _ = RunState(statedb, env, test.Transaction)

	// // Compare expected  and actual return
	rexp := common.FromHex(test.Out)
	if bytes.Compare(rexp, ret) != 0 {
		return fmt.Errorf("return failed. Expected %x, got %x\n", rexp, ret)
	}

	// check post state
	for addr, account := range test.Post {
		obj := statedb.GetStateObject(common.HexToAddress(addr))
		if obj == nil {
			continue
		}

		if obj.Balance().Cmp(common.Big(account.Balance)) != 0 {
			return fmt.Errorf("(%x) balance failed. Expected %v, got %v => %v\n", obj.Address().Bytes()[:4], account.Balance, obj.Balance(), new(big.Int).Sub(common.Big(account.Balance), obj.Balance()))
		}

		if obj.Nonce() != common.String2Big(account.Nonce).Uint64() {
			return fmt.Errorf("(%x) nonce failed. Expected %v, got %v\n", obj.Address().Bytes()[:4], account.Nonce, obj.Nonce())
		}

		for addr, value := range account.Storage {
			v := obj.GetState(common.HexToHash(addr))
			vexp := common.HexToHash(value)

			if v != vexp {
				return fmt.Errorf("(%x: %s) storage failed. Expected %x, got %x (%v %v)\n", obj.Address().Bytes()[0:4], addr, vexp, v, vexp.Big(), v.Big())
			}
		}
	}

	statedb.Sync()
	if common.HexToHash(test.PostStateRoot) != statedb.Root() {
		return fmt.Errorf("Post state root error. Expected %s, got %x", test.PostStateRoot, statedb.Root())
	}

	// check logs
	if len(test.Logs) > 0 {
		if err := checkLogs(test.Logs, logs); err != nil {
			return err
		}
	}

	return nil
}