Example #1
0
// Process processes the state changes according to the Ethereum rules by running
// the transaction messages using the statedb and applying any rewards to both
// the processor (coinbase) and any included uncles.
//
// Process returns the receipts and logs accumulated during the process and
// returns the amount of gas that was used in the process. If any of the
// transactions failed to execute due to insufficient gas it will return an error.
func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, vm.Logs, *big.Int, error) {
	var (
		receipts     types.Receipts
		totalUsedGas = big.NewInt(0)
		err          error
		header       = block.Header()
		allLogs      vm.Logs
		gp           = new(GasPool).AddGas(block.GasLimit())
	)
	// Mutate the the block and state according to any hard-fork specs
	if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 {
		ApplyDAOHardFork(statedb)
	}
	// Iterate over and process the individual transactions
	for i, tx := range block.Transactions() {
		statedb.StartRecord(tx.Hash(), block.Hash(), i)
		receipt, logs, _, err := ApplyTransaction(p.config, p.bc, gp, statedb, header, tx, totalUsedGas, cfg)
		if err != nil {
			return nil, nil, totalUsedGas, err
		}
		receipts = append(receipts, receipt)
		allLogs = append(allLogs, logs...)
	}
	AccumulateRewards(statedb, header, block.Uncles())

	return receipts, allLogs, totalUsedGas, err
}
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
	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)

	// Notify all subscribers
	if !transientProcess {
		go self.eventMux.Post(TxPostEvent{tx})
		go self.eventMux.Post(logs)
	}

	return receipt, gas, err
}
func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
	var (
		receipts      types.Receipts
		totalUsedGas  = big.NewInt(0)
		err           error
		cumulativeSum = new(big.Int)
		header        = block.Header()
	)

	for i, tx := range txs {
		statedb.StartRecord(tx.Hash(), block.Hash(), i)

		receipt, txGas, err := self.ApplyTransaction(gp, statedb, header, tx, totalUsedGas, transientProcess)
		if err != nil {
			return nil, err
		}

		if err != nil {
			glog.V(logger.Core).Infoln("TX err:", err)
		}
		receipts = append(receipts, receipt)

		cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice()))
	}

	if block.GasUsed().Cmp(totalUsedGas) != 0 {
		return nil, ValidationError(fmt.Sprintf("gas used error (%v / %v)", block.GasUsed(), totalUsedGas))
	}

	if transientProcess {
		go self.eventMux.Post(PendingBlockEvent{block, statedb.Logs()})
	}

	return receipts, err
}
Example #4
0
// ContractCall implements ContractCaller.ContractCall, executing the specified
// contract with the given input data.
func (b *SimulatedBackend) ContractCall(contract common.Address, data []byte, pending bool) ([]byte, error) {
	// Create a copy of the current state db to screw around with
	var (
		block   *types.Block
		statedb *state.StateDB
	)
	if pending {
		block, statedb = b.pendingBlock, b.pendingState.Copy()
	} else {
		block = b.blockchain.CurrentBlock()
		statedb, _ = b.blockchain.State()
	}
	// Set infinite balance to the a fake caller account
	from := statedb.GetOrNewStateObject(common.Address{})
	from.SetBalance(common.MaxBig)

	// Assemble the call invocation to measure the gas usage
	msg := callmsg{
		from:     from,
		to:       &contract,
		gasPrice: new(big.Int),
		gasLimit: common.MaxBig,
		value:    new(big.Int),
		data:     data,
	}
	// Execute the call and return
	vmenv := core.NewEnv(statedb, b.blockchain, msg, block.Header(), nil)
	gaspool := new(core.GasPool).AddGas(common.MaxBig)

	out, _, err := core.ApplyMessage(vmenv, msg, gaspool)
	return out, err
}
func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block *types.Block, transientProcess bool) (receipts types.Receipts, err error) {
	gp := statedb.GetOrNewStateObject(block.Coinbase())
	gp.SetGasLimit(block.GasLimit())

	// Process the transactions on to parent state
	receipts, err = sm.ApplyTransactions(gp, statedb, block, block.Transactions(), transientProcess)
	if err != nil {
		return nil, err
	}

	return receipts, nil
}
Example #6
0
// ApplyDAOHardFork modifies the state database according to the DAO hard-fork
// rules, transferring all balances of a set of DAO accounts to a single refund
// contract.
func ApplyDAOHardFork(statedb *state.StateDB) {
	// Retrieve the contract to refund balances into
	refund := statedb.GetOrNewStateObject(params.DAORefundContract)

	// Move every DAO account and extra-balance account funds into the refund contract
	for _, addr := range params.DAODrainList {
		if account := statedb.GetStateObject(addr); account != nil {
			refund.AddBalance(account.Balance())
			account.SetBalance(new(big.Int))
		}
	}
}
Example #7
0
func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
	// If we are mining this block and validating we want to set the logs back to 0

	cb := statedb.GetStateObject(coinbase.Address())
	_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, cb)
	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 (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, block *types.Block, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
	// If we are mining this block and validating we want to set the logs back to 0
	//statedb.EmptyLogs()

	cb := statedb.GetStateObject(coinbase.Address())
	_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, block), tx, cb)
	if err != nil && (IsNonceErr(err) || state.IsGasLimitErr(err) || IsInvalidTxErr(err)) {
		// If the account is managed, remove the invalid nonce.
		//from, _ := tx.From()
		//self.bc.TxState().RemoveNonce(from, tx.Nonce())
		return nil, nil, err
	}

	// Update the state with pending changes
	statedb.Update()

	cumulative := new(big.Int).Set(usedGas.Add(usedGas, gas))
	receipt := types.NewReceipt(statedb.Root().Bytes(), cumulative)

	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
}
Example #9
0
func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
	var (
		keyPair, _ = crypto.NewKeyPairFromSec([]byte(common.Hex2Bytes(tx["secretKey"])))
		data       = FromHex(tx["data"])
		gas        = common.Big(tx["gasLimit"])
		price      = common.Big(tx["gasPrice"])
		value      = common.Big(tx["value"])
		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.SetGasPool(common.Big(env["currentGasLimit"]))

	message := NewMessage(common.BytesToAddress(keyPair.Address()), to, data, value, gas, price)
	vmenv := NewEnvFromMap(statedb, env, tx)
	vmenv.origin = common.BytesToAddress(keyPair.Address())
	ret, _, err := core.ApplyMessage(vmenv, message, coinbase)
	if core.IsNonceErr(err) || core.IsInvalidTxErr(err) {
		statedb.Set(snapshot)
	}
	statedb.Update()

	return ret, vmenv.logs, vmenv.Gas, err
}
Example #10
0
func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
	// If we are mining this block and validating we want to set the logs back to 0

	cb := statedb.GetStateObject(coinbase.Address())
	_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, cb)
	if err != nil && (IsNonceErr(err) || state.IsGasLimitErr(err) || IsInvalidTxErr(err)) {
		return nil, nil, err
	}

	// Update the state with pending changes
	statedb.Update()

	usedGas.Add(usedGas, gas)
	receipt := types.NewReceipt(statedb.Root().Bytes(), usedGas)
	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
}
Example #11
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 #12
0
// AccumulateRewards credits the coinbase of the given block with the
// mining reward. The total reward consists of the static block reward
// and rewards for included uncles. The coinbase of each uncle block is
// also rewarded.
func AccumulateRewards(statedb *state.StateDB, header *types.Header, uncles []*types.Header) {
	reward := new(big.Int).Set(BlockReward)
	r := new(big.Int)
	for _, uncle := range uncles {
		r.Add(uncle.Number, big8)
		r.Sub(r, header.Number)
		r.Mul(r, BlockReward)
		r.Div(r, big8)
		statedb.AddBalance(uncle.Coinbase, r)

		r.Div(BlockReward, big32)
		reward.Add(reward, r)
	}
	statedb.AddBalance(header.Coinbase, reward)
}
// Converts an message in to a state object
func makeContract(msg Message, state *state.StateDB) *state.StateObject {
	faddr, _ := msg.From()
	addr := crypto.CreateAddress(faddr, msg.Nonce())

	contract := state.GetOrNewStateObject(addr)
	contract.SetInitCode(msg.Data())

	return contract
}
Example #14
0
func AccumulateRewards(statedb *state.StateDB, block *types.Block) {
	reward := new(big.Int).Set(BlockReward)

	for _, uncle := range block.Uncles() {
		num := new(big.Int).Add(big.NewInt(8), uncle.Number)
		num.Sub(num, block.Number())

		r := new(big.Int)
		r.Mul(BlockReward, num)
		r.Div(r, big.NewInt(8))

		statedb.AddBalance(uncle.Coinbase, r)

		reward.Add(reward, new(big.Int).Div(BlockReward, big.NewInt(32)))
	}

	// Get the account associated with the coinbase
	statedb.AddBalance(block.Header().Coinbase, reward)
}
Example #15
0
// Canary will check the 0'd address of the 4 contracts above.
// If two or more are set to anything other than a 0 the canary
// dies a horrible death.
func Canary(statedb *state.StateDB) bool {
	r := new(big.Int)
	r.Add(r, statedb.GetState(jeff, common.Hash{}).Big())
	r.Add(r, statedb.GetState(vitalik, common.Hash{}).Big())
	r.Add(r, statedb.GetState(christoph, common.Hash{}).Big())
	r.Add(r, statedb.GetState(gav, common.Hash{}).Big())

	return r.Cmp(big.NewInt(1)) > 0
}
Example #16
0
// applies queued transactions originating from address onto the latest state
// and creates a block
// only used in tests
// - could be removed in favour of mining on testdag (natspec e2e + networking)
// + filters
func (self *XEth) ApplyTestTxs(statedb *state.StateDB, address common.Address, txc uint64) (uint64, *XEth) {

	block := self.backend.ChainManager().NewBlock(address)
	coinbase := statedb.GetStateObject(address)
	coinbase.SetGasPool(big.NewInt(10000000))
	txs := self.backend.TxPool().GetQueuedTransactions()

	for i := 0; i < len(txs); i++ {
		for _, tx := range txs {
			if tx.Nonce() == txc {
				_, _, err := core.ApplyMessage(core.NewEnv(statedb, self.backend.ChainManager(), tx, block), tx, coinbase)
				if err != nil {
					panic(err)
				}
				txc++
			}
		}
	}

	xeth := self.WithState(statedb)
	return txc, xeth
}
Example #17
0
func makeHeader(parent *types.Block, state *state.StateDB) *types.Header {
	time := parent.Time() + 10 // block time is fixed at 10 seconds
	return &types.Header{
		Root:       state.Root(),
		ParentHash: parent.Hash(),
		Coinbase:   parent.Coinbase(),
		Difficulty: CalcDifficulty(int64(time), int64(parent.Time()), parent.Difficulty()),
		GasLimit:   CalcGasLimit(parent),
		GasUsed:    new(big.Int),
		Number:     new(big.Int).Add(parent.Number(), common.Big1),
		Time:       uint64(time),
	}
}
Example #18
0
// ValidateState validates the various changes that happen after a state
// transition, such as amount of used gas, the receipt roots and the state root
// itself. ValidateState returns a database batch if the validation was a success
// otherwise nil and an error is returned.
func (v *BlockValidator) ValidateState(block, parent *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas *big.Int) (err error) {
	header := block.Header()
	if block.GasUsed().Cmp(usedGas) != 0 {
		return ValidationError(fmt.Sprintf("gas used error (%v / %v)", block.GasUsed(), usedGas))
	}
	// Validate the received block's bloom with the one derived from the generated receipts.
	// For valid blocks this should always validate to true.
	rbloom := types.CreateBloom(receipts)
	if rbloom != header.Bloom {
		return fmt.Errorf("unable to replicate block's bloom=%x vs calculated bloom=%x", header.Bloom, rbloom)
	}
	// Tre receipt Trie's root (R = (Tr [[H1, R1], ... [Hn, R1]]))
	receiptSha := types.DeriveSha(receipts)
	if receiptSha != header.ReceiptHash {
		return fmt.Errorf("invalid receipt root hash. received=%x calculated=%x", header.ReceiptHash, receiptSha)
	}
	// Validate the state root against the received state root and throw
	// an error if they don't match.
	if root := statedb.IntermediateRoot(); header.Root != root {
		return fmt.Errorf("invalid merkle root: header=%x computed=%x", header.Root, root)
	}
	return nil
}
Example #19
0
// Canary will check the 0'd address of the 4 contracts above.
// If two or more are set to anything other than a 0 the canary
// dies a horrible death.
func Canary(statedb *state.StateDB) bool {
	var r int
	if (statedb.GetState(jeff, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
		r++
	}
	if (statedb.GetState(gav, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
		r++
	}
	if (statedb.GetState(christoph, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
		r++
	}
	if (statedb.GetState(vitalik, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
		r++
	}
	return r > 1
}
// Process processes the state changes according to the Ethereum rules by running
// the transaction messages using the statedb and applying any rewards to both
// the processor (coinbase) and any included uncles.
//
// Process returns the receipts and logs accumulated during the process and
// returns the amount of gas that was used in the process. If any of the
// transactions failed to execute due to insufficient gas it will return an error.
func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, vm.Logs, *big.Int, error) {
	var (
		receipts     types.Receipts
		totalUsedGas = big.NewInt(0)
		err          error
		header       = block.Header()
		allLogs      vm.Logs
		gp           = new(GasPool).AddGas(block.GasLimit())
	)

	for i, tx := range block.Transactions() {
		statedb.StartRecord(tx.Hash(), block.Hash(), i)
		receipt, logs, _, err := ApplyTransaction(p.config, p.bc, gp, statedb, header, tx, totalUsedGas, cfg)
		if err != nil {
			return nil, nil, totalUsedGas, err
		}
		receipts = append(receipts, receipt)
		allLogs = append(allLogs, logs...)
	}
	AccumulateRewards(statedb, header, block.Uncles())

	return receipts, allLogs, totalUsedGas, err
}
// ApplyTransaction attempts 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(config *ChainConfig, bc *BlockChain, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, cfg vm.Config) (*types.Receipt, vm.Logs, *big.Int, error) {
	_, gas, err := ApplyMessage(NewEnv(statedb, config, bc, tx, header, cfg), 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
}
Example #22
0
func makeHeader(parent *types.Block, state *state.StateDB) *types.Header {
	var time *big.Int
	if parent.Time() == nil {
		time = big.NewInt(10)
	} else {
		time = new(big.Int).Add(parent.Time(), big.NewInt(10)) // block time is fixed at 10 seconds
	}
	return &types.Header{
		Root:       state.IntermediateRoot(),
		ParentHash: parent.Hash(),
		Coinbase:   parent.Coinbase(),
		Difficulty: CalcDifficulty(time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()),
		GasLimit:   CalcGasLimit(parent),
		GasUsed:    new(big.Int),
		Number:     new(big.Int).Add(parent.Number(), common.Big1),
		Time:       time,
	}
}
Example #23
0
func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, vm.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(RuleSet{params.MainNetHomesteadBlock}, 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 #24
0
func (t *BlockTest) ValidatePostState(statedb *state.StateDB) error {
	// validate post state accounts in test file against what we have in state db
	for addrString, acct := range t.postAccounts {
		// XXX: is is worth it checking for errors here?
		addr, err := hex.DecodeString(addrString)
		if err != nil {
			return err
		}
		code, err := hex.DecodeString(strings.TrimPrefix(acct.Code, "0x"))
		if err != nil {
			return err
		}
		balance, ok := new(big.Int).SetString(acct.Balance, 0)
		if !ok {
			return err
		}
		nonce, err := strconv.ParseUint(prepInt(16, acct.Nonce), 16, 64)
		if err != nil {
			return err
		}

		// address is indirectly verified by the other fields, as it's the db key
		code2 := statedb.GetCode(common.BytesToAddress(addr))
		balance2 := statedb.GetBalance(common.BytesToAddress(addr))
		nonce2 := statedb.GetNonce(common.BytesToAddress(addr))
		if !bytes.Equal(code2, code) {
			return fmt.Errorf("account code mismatch for addr: %s want: %s have: %s", addrString, hex.EncodeToString(code), hex.EncodeToString(code2))
		}
		if balance2.Cmp(balance) != 0 {
			return fmt.Errorf("account balance mismatch for addr: %s, want: %d, have: %d", addrString, balance, balance2)
		}
		if nonce2 != nonce {
			return fmt.Errorf("account nonce mismatch for addr: %s want: %d have: %d", addrString, nonce, nonce2)
		}
	}
	return nil
}
Example #25
0
func (t *BlockTest) ValidatePostState(statedb *state.StateDB) error {
	for addrString, acct := range t.preAccounts {
		// XXX: is is worth it checking for errors here?
		addr, _ := hex.DecodeString(addrString)
		code, _ := hex.DecodeString(strings.TrimPrefix(acct.Code, "0x"))
		balance, _ := new(big.Int).SetString(acct.Balance, 0)
		nonce, _ := strconv.ParseUint(acct.Nonce, 16, 64)

		// address is indirectly verified by the other fields, as it's the db key
		code2 := statedb.GetCode(common.BytesToAddress(addr))
		balance2 := statedb.GetBalance(common.BytesToAddress(addr))
		nonce2 := statedb.GetNonce(common.BytesToAddress(addr))
		if !bytes.Equal(code2, code) {
			return fmt.Errorf("account code mismatch, addr, found, expected: ", addrString, hex.EncodeToString(code2), hex.EncodeToString(code))
		}
		if balance2.Cmp(balance) != 0 {
			return fmt.Errorf("account balance mismatch, addr, found, expected: ", addrString, balance2, balance)
		}
		if nonce2 != nonce {
			return fmt.Errorf("account nonce mismatch, addr, found, expected: ", addrString, nonce2, nonce)
		}
	}
	return nil
}
Example #26
0
// jitCalculateGasAndSize calculates the required given the opcode and stack items calculates the new memorysize for
// the operation. This does not reduce gas or resizes the memory.
func jitCalculateGasAndSize(env Environment, context *Context, caller ContextRef, instr instruction, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
	var (
		gas                 = new(big.Int)
		newMemSize *big.Int = new(big.Int)
	)
	err := jitBaseCheck(instr, stack, gas)
	if err != nil {
		return nil, nil, err
	}

	// stack Check, memory resize & gas phase
	switch op := instr.op; op {
	case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
		n := int(op - SWAP1 + 2)
		err := stack.require(n)
		if err != nil {
			return nil, nil, err
		}
		gas.Set(GasFastestStep)
	case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
		n := int(op - DUP1 + 1)
		err := stack.require(n)
		if err != nil {
			return nil, nil, err
		}
		gas.Set(GasFastestStep)
	case LOG0, LOG1, LOG2, LOG3, LOG4:
		n := int(op - LOG0)
		err := stack.require(n + 2)
		if err != nil {
			return nil, nil, err
		}

		mSize, mStart := stack.data[stack.len()-2], stack.data[stack.len()-1]

		add := new(big.Int)
		gas.Add(gas, params.LogGas)
		gas.Add(gas, add.Mul(big.NewInt(int64(n)), params.LogTopicGas))
		gas.Add(gas, add.Mul(mSize, params.LogDataGas))

		newMemSize = calcMemSize(mStart, mSize)
	case EXP:
		gas.Add(gas, new(big.Int).Mul(big.NewInt(int64(len(stack.data[stack.len()-2].Bytes()))), params.ExpByteGas))
	case SSTORE:
		err := stack.require(2)
		if err != nil {
			return nil, nil, err
		}

		var g *big.Int
		y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
		val := statedb.GetState(context.Address(), common.BigToHash(x))

		// This checks for 3 scenario's and calculates gas accordingly
		// 1. From a zero-value address to a non-zero value         (NEW VALUE)
		// 2. From a non-zero value address to a zero-value address (DELETE)
		// 3. From a nen-zero to a non-zero                         (CHANGE)
		if common.EmptyHash(val) && !common.EmptyHash(common.BigToHash(y)) {
			// 0 => non 0
			g = params.SstoreSetGas
		} else if !common.EmptyHash(val) && common.EmptyHash(common.BigToHash(y)) {
			statedb.Refund(params.SstoreRefundGas)

			g = params.SstoreClearGas
		} else {
			// non 0 => non 0 (or 0 => 0)
			g = params.SstoreClearGas
		}
		gas.Set(g)
	case SUICIDE:
		if !statedb.IsDeleted(context.Address()) {
			statedb.Refund(params.SuicideRefundGas)
		}
	case MLOAD:
		newMemSize = calcMemSize(stack.peek(), u256(32))
	case MSTORE8:
		newMemSize = calcMemSize(stack.peek(), u256(1))
	case MSTORE:
		newMemSize = calcMemSize(stack.peek(), u256(32))
	case RETURN:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])
	case SHA3:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])

		words := toWordSize(stack.data[stack.len()-2])
		gas.Add(gas, words.Mul(words, params.Sha3WordGas))
	case CALLDATACOPY:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])

		words := toWordSize(stack.data[stack.len()-3])
		gas.Add(gas, words.Mul(words, params.CopyGas))
	case CODECOPY:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])

		words := toWordSize(stack.data[stack.len()-3])
		gas.Add(gas, words.Mul(words, params.CopyGas))
	case EXTCODECOPY:
		newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-4])

		words := toWordSize(stack.data[stack.len()-4])
		gas.Add(gas, words.Mul(words, params.CopyGas))

	case CREATE:
		newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-3])
	case CALL, CALLCODE:
		gas.Add(gas, stack.data[stack.len()-1])

		if op == CALL {
			if env.State().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
				gas.Add(gas, params.CallNewAccountGas)
			}
		}

		if len(stack.data[stack.len()-3].Bytes()) > 0 {
			gas.Add(gas, params.CallValueTransferGas)
		}

		x := calcMemSize(stack.data[stack.len()-6], stack.data[stack.len()-7])
		y := calcMemSize(stack.data[stack.len()-4], stack.data[stack.len()-5])

		newMemSize = common.BigMax(x, y)
	}

	if newMemSize.Cmp(common.Big0) > 0 {
		newMemSizeWords := toWordSize(newMemSize)
		newMemSize.Mul(newMemSizeWords, u256(32))

		if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
			// be careful reusing variables here when changing.
			// The order has been optimised to reduce allocation
			oldSize := toWordSize(big.NewInt(int64(mem.Len())))
			pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
			linCoef := oldSize.Mul(oldSize, params.MemoryGas)
			quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
			oldTotalFee := new(big.Int).Add(linCoef, quadCoef)

			pow.Exp(newMemSizeWords, common.Big2, Zero)
			linCoef = linCoef.Mul(newMemSizeWords, params.MemoryGas)
			quadCoef = quadCoef.Div(pow, params.QuadCoeffDiv)
			newTotalFee := linCoef.Add(linCoef, quadCoef)

			fee := newTotalFee.Sub(newTotalFee, oldTotalFee)
			gas.Add(gas, fee)
		}
	}

	return newMemSize, gas, nil
}
Example #27
0
func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCode, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
	var (
		gas                 = new(big.Int)
		newMemSize *big.Int = new(big.Int)
	)
	err := baseCheck(op, stack, gas)
	if err != nil {
		return nil, nil, err
	}

	// stack Check, memory resize & gas phase
	switch op {
	case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
		n := int(op - SWAP1 + 2)
		err := stack.require(n)
		if err != nil {
			return nil, nil, err
		}
		gas.Set(GasFastestStep)
	case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
		n := int(op - DUP1 + 1)
		err := stack.require(n)
		if err != nil {
			return nil, nil, err
		}
		gas.Set(GasFastestStep)
	case LOG0, LOG1, LOG2, LOG3, LOG4:
		n := int(op - LOG0)
		err := stack.require(n + 2)
		if err != nil {
			return nil, nil, err
		}

		mSize, mStart := stack.data[stack.len()-2], stack.data[stack.len()-1]

		gas.Add(gas, params.LogGas)
		gas.Add(gas, new(big.Int).Mul(big.NewInt(int64(n)), params.LogTopicGas))
		gas.Add(gas, new(big.Int).Mul(mSize, params.LogDataGas))

		newMemSize = calcMemSize(mStart, mSize)
	case EXP:
		gas.Add(gas, new(big.Int).Mul(big.NewInt(int64(len(stack.data[stack.len()-2].Bytes()))), params.ExpByteGas))
	case SSTORE:
		err := stack.require(2)
		if err != nil {
			return nil, nil, err
		}

		var g *big.Int
		y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
		val := statedb.GetState(context.Address(), common.BigToHash(x))
		if len(val) == 0 && len(y.Bytes()) > 0 {
			// 0 => non 0
			g = params.SstoreSetGas
		} else if len(val) > 0 && len(y.Bytes()) == 0 {
			statedb.Refund(self.env.Origin(), params.SstoreRefundGas)

			g = params.SstoreClearGas
		} else {
			// non 0 => non 0 (or 0 => 0)
			g = params.SstoreClearGas
		}
		gas.Set(g)
	case SUICIDE:
		if !statedb.IsDeleted(context.Address()) {
			statedb.Refund(self.env.Origin(), params.SuicideRefundGas)
		}
	case MLOAD:
		newMemSize = calcMemSize(stack.peek(), u256(32))
	case MSTORE8:
		newMemSize = calcMemSize(stack.peek(), u256(1))
	case MSTORE:
		newMemSize = calcMemSize(stack.peek(), u256(32))
	case RETURN:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])
	case SHA3:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])

		words := toWordSize(stack.data[stack.len()-2])
		gas.Add(gas, words.Mul(words, params.Sha3WordGas))
	case CALLDATACOPY:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])

		words := toWordSize(stack.data[stack.len()-3])
		gas.Add(gas, words.Mul(words, params.CopyGas))
	case CODECOPY:
		newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])

		words := toWordSize(stack.data[stack.len()-3])
		gas.Add(gas, words.Mul(words, params.CopyGas))
	case EXTCODECOPY:
		newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-4])

		words := toWordSize(stack.data[stack.len()-4])
		gas.Add(gas, words.Mul(words, params.CopyGas))

	case CREATE:
		newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-3])
	case CALL, CALLCODE:
		gas.Add(gas, stack.data[stack.len()-1])

		if op == CALL {
			if self.env.State().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
				gas.Add(gas, params.CallNewAccountGas)
			}
		}

		if len(stack.data[stack.len()-3].Bytes()) > 0 {
			gas.Add(gas, params.CallValueTransferGas)
		}

		x := calcMemSize(stack.data[stack.len()-6], stack.data[stack.len()-7])
		y := calcMemSize(stack.data[stack.len()-4], stack.data[stack.len()-5])

		newMemSize = common.BigMax(x, y)
	}

	if newMemSize.Cmp(common.Big0) > 0 {
		newMemSizeWords := toWordSize(newMemSize)
		newMemSize.Mul(newMemSizeWords, u256(32))

		if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
			oldSize := toWordSize(big.NewInt(int64(mem.Len())))
			pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
			linCoef := new(big.Int).Mul(oldSize, params.MemoryGas)
			quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
			oldTotalFee := new(big.Int).Add(linCoef, quadCoef)

			pow.Exp(newMemSizeWords, common.Big2, Zero)
			linCoef = new(big.Int).Mul(newMemSizeWords, params.MemoryGas)
			quadCoef = new(big.Int).Div(pow, params.QuadCoeffDiv)
			newTotalFee := new(big.Int).Add(linCoef, quadCoef)

			fee := new(big.Int).Sub(newTotalFee, oldTotalFee)
			gas.Add(gas, fee)
		}
	}

	return newMemSize, gas, nil
}
Example #28
0
// InsertChain will attempt to insert the given chain in to the canonical chain or, otherwise, create a fork. It an error is returned
// it will return the index number of the failing block as well an error describing what went wrong (for possible errors see core/errors.go).
func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
	self.wg.Add(1)
	defer self.wg.Done()

	self.chainmu.Lock()
	defer self.chainmu.Unlock()

	// A queued approach to delivering events. This is generally
	// faster than direct delivery and requires much less mutex
	// acquiring.
	var (
		stats         struct{ queued, processed, ignored int }
		events        = make([]interface{}, 0, len(chain))
		coalescedLogs vm.Logs
		tstart        = time.Now()

		nonceChecked = make([]bool, len(chain))
		statedb      *state.StateDB
	)

	// Start the parallel nonce verifier.
	nonceAbort, nonceResults := verifyNoncesFromBlocks(self.pow, chain)
	defer close(nonceAbort)

	txcount := 0
	for i, block := range chain {
		if atomic.LoadInt32(&self.procInterrupt) == 1 {
			glog.V(logger.Debug).Infoln("Premature abort during block chain processing")
			break
		}

		bstart := time.Now()
		// Wait for block i's nonce to be verified before processing
		// its state transition.
		for !nonceChecked[i] {
			r := <-nonceResults
			nonceChecked[r.index] = true
			if !r.valid {
				block := chain[r.index]
				return r.index, &BlockNonceErr{Hash: block.Hash(), Number: block.Number(), Nonce: block.Nonce()}
			}
		}

		if BadHashes[block.Hash()] {
			err := BadHashError(block.Hash())
			reportBlock(block, err)
			return i, err
		}
		// Stage 1 validation of the block using the chain's validator
		// interface.
		err := self.Validator().ValidateBlock(block)
		if err != nil {
			if IsKnownBlockErr(err) {
				stats.ignored++
				continue
			}

			if err == BlockFutureErr {
				// Allow up to MaxFuture second in the future blocks. If this limit
				// is exceeded the chain is discarded and processed at a later time
				// if given.
				max := big.NewInt(time.Now().Unix() + maxTimeFutureBlocks)
				if block.Time().Cmp(max) == 1 {
					return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max)
				}

				self.futureBlocks.Add(block.Hash(), block)
				stats.queued++
				continue
			}

			if IsParentErr(err) && self.futureBlocks.Contains(block.ParentHash()) {
				self.futureBlocks.Add(block.Hash(), block)
				stats.queued++
				continue
			}

			reportBlock(block, err)

			return i, err
		}

		// Create a new statedb using the parent block and report an
		// error if it fails.
		if statedb == nil {
			statedb, err = state.New(self.GetBlock(block.ParentHash()).Root(), self.chainDb)
		} else {
			err = statedb.Reset(chain[i-1].Root())
		}
		if err != nil {
			reportBlock(block, err)
			return i, err
		}
		// Process block using the parent state as reference point.
		receipts, logs, usedGas, err := self.processor.Process(block, statedb, self.config.VmConfig)
		if err != nil {
			reportBlock(block, err)
			return i, err
		}
		// Validate the state using the default validator
		err = self.Validator().ValidateState(block, self.GetBlock(block.ParentHash()), statedb, receipts, usedGas)
		if err != nil {
			reportBlock(block, err)
			return i, err
		}
		// Write state changes to database
		_, err = statedb.Commit()
		if err != nil {
			return i, err
		}

		// coalesce logs for later processing
		coalescedLogs = append(coalescedLogs, logs...)

		if err := WriteBlockReceipts(self.chainDb, block.Hash(), receipts); err != nil {
			return i, err
		}

		txcount += len(block.Transactions())
		// write the block to the chain and get the status
		status, err := self.WriteBlock(block)
		if err != nil {
			return i, err
		}

		switch status {
		case CanonStatTy:
			if glog.V(logger.Debug) {
				glog.Infof("[%v] inserted block #%d (%d TXs %v G %d UNCs) (%x...). Took %v\n", time.Now().UnixNano(), block.Number(), len(block.Transactions()), block.GasUsed(), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
			}
			events = append(events, ChainEvent{block, block.Hash(), logs})

			// This puts transactions in a extra db for rpc
			if err := WriteTransactions(self.chainDb, block); err != nil {
				return i, err
			}
			// store the receipts
			if err := WriteReceipts(self.chainDb, receipts); err != nil {
				return i, err
			}
			// Write map map bloom filters
			if err := WriteMipmapBloom(self.chainDb, block.NumberU64(), receipts); err != nil {
				return i, err
			}
		case SideStatTy:
			if glog.V(logger.Detail) {
				glog.Infof("inserted forked block #%d (TD=%v) (%d TXs %d UNCs) (%x...). Took %v\n", block.Number(), block.Difficulty(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
			}
			events = append(events, ChainSideEvent{block, logs})

		case SplitStatTy:
			events = append(events, ChainSplitEvent{block, logs})
		}
		stats.processed++
	}

	if (stats.queued > 0 || stats.processed > 0 || stats.ignored > 0) && bool(glog.V(logger.Info)) {
		tend := time.Since(tstart)
		start, end := chain[0], chain[len(chain)-1]
		glog.Infof("imported %d block(s) (%d queued %d ignored) including %d txs in %v. #%v [%x / %x]\n", stats.processed, stats.queued, stats.ignored, txcount, tend, end.Number(), start.Hash().Bytes()[:4], end.Hash().Bytes()[:4])
	}
	go self.postChainEvents(events, coalescedLogs)

	return 0, nil
}