Created generic message (easy for testing)

Author: obscuren

cmd/mist/gui.go

@@ -305,13 +305,13 @@ func (gui *Gui) insertTransaction(window string, tx *types.Transaction) {
 
 	var (
 		ptx  = xeth.NewJSTx(tx, pipe.World().State())
-		send = nameReg.Storage(tx.Sender())
-		rec  = nameReg.Storage(tx.Recipient)
+		send = nameReg.Storage(tx.From())
+		rec  = nameReg.Storage(tx.To())
 		s, r string
 	)
 
 	if tx.CreatesContract() {
-		rec = nameReg.Storage(tx.CreationAddress(pipe.World().State()))
+		rec = nameReg.Storage(core.AddressFromMessage(tx))
 	}
 
 	if send.Len() != 0 {
@@ -323,9 +323,9 @@ func (gui *Gui) insertTransaction(window string, tx *types.Transaction) {
 		r = strings.Trim(rec.Str(), "\x00")
 	} else {
 		if tx.CreatesContract() {
-			r = ethutil.Bytes2Hex(tx.CreationAddress(pipe.World().State()))
+			r = ethutil.Bytes2Hex(core.AddressFromMessage(tx))
 		} else {
-			r = ethutil.Bytes2Hex(tx.Recipient)
+			r = ethutil.Bytes2Hex(tx.To())
 		}
 	}
 	ptx.Sender = s
@@ -449,11 +449,11 @@ func (gui *Gui) update() {
 					object := state.GetAccount(gui.address())
 
 					if bytes.Compare(tx.Sender(), gui.address()) == 0 {
-						object.SubAmount(tx.Value)
+						object.SubAmount(tx.Value())
 
 						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
-					} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
-						object.AddAmount(tx.Value)
+					} else if bytes.Compare(tx.To(), gui.address()) == 0 {
+						object.AddAmount(tx.Value())
 
 						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
 					}

core/block_manager.go

@@ -111,7 +111,7 @@ done:
 		// If we are mining this block and validating we want to set the logs back to 0
 		state.EmptyLogs()
 
-		txGas := new(big.Int).Set(tx.Gas)
+		txGas := new(big.Int).Set(tx.Gas())
 
 		cb := state.GetStateObject(coinbase.Address())
 		st := NewStateTransition(cb, tx, state, block)
@@ -134,7 +134,7 @@ done:
 		}
 
 		txGas.Sub(txGas, st.gas)
-		cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice))
+		cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice()))
 
 		// Update the state with pending changes
 		state.Update(txGas)

core/state_transition.go

@@ -5,6 +5,8 @@ import (
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/state"
 	"github.com/ethereum/go-ethereum/vm"
 )
@@ -27,18 +29,50 @@ import (
  */
 type StateTransition struct {
 	coinbase, receiver []byte
-	tx                 *types.Transaction
+	msg                Message
 	gas, gasPrice      *big.Int
 	value              *big.Int
 	data               []byte
 	state              *state.StateDB
 	block              *types.Block
 
 	cb, rec, sen *state.StateObject
+
+	Env vm.Environment
+}
+
+type Message interface {
+	Hash() []byte
+
+	CreatesContract() bool
+
+	From() []byte
+	To() []byte
+
+	GasValue() *big.Int
+	GasPrice() *big.Int
+	Gas() *big.Int
+	Value() *big.Int
+
+	Nonce() uint64
+	Data() []byte
 }
 
-func NewStateTransition(coinbase *state.StateObject, tx *types.Transaction, state *state.StateDB, block *types.Block) *StateTransition {
-	return &StateTransition{coinbase.Address(), tx.Recipient, tx, new(big.Int), new(big.Int).Set(tx.GasPrice), tx.Value, tx.Data, state, block, coinbase, nil, nil}
+func AddressFromMessage(msg Message) []byte {
+	// Generate a new address
+	return crypto.Sha3(ethutil.NewValue([]interface{}{msg.From(), msg.Nonce()}).Encode())[12:]
+}
+
+func NewStateTransition(coinbase *state.StateObject, msg Message, state *state.StateDB, block *types.Block) *StateTransition {
+	return &StateTransition{coinbase.Address(), msg.To(), msg, new(big.Int), new(big.Int).Set(msg.GasPrice()), msg.Value(), msg.Data(), state, block, coinbase, nil, nil, nil}
+}
+
+func (self *StateTransition) VmEnv() vm.Environment {
+	if self.Env == nil {
+		self.Env = NewEnv(self.state, self.msg, self.block)
+	}
+
+	return self.Env
 }
 
 func (self *StateTransition) Coinbase() *state.StateObject {
@@ -49,25 +83,25 @@ func (self *StateTransition) Coinbase() *state.StateObject {
 	self.cb = self.state.GetOrNewStateObject(self.coinbase)
 	return self.cb
 }
-func (self *StateTransition) Sender() *state.StateObject {
+func (self *StateTransition) From() *state.StateObject {
 	if self.sen != nil {
 		return self.sen
 	}
 
-	self.sen = self.state.GetOrNewStateObject(self.tx.Sender())
+	self.sen = self.state.GetOrNewStateObject(self.msg.From())
 
 	return self.sen
 }
-func (self *StateTransition) Receiver() *state.StateObject {
-	if self.tx != nil && self.tx.CreatesContract() {
+func (self *StateTransition) To() *state.StateObject {
+	if self.msg != nil && self.msg.CreatesContract() {
 		return nil
 	}
 
 	if self.rec != nil {
 		return self.rec
 	}
 
-	self.rec = self.state.GetOrNewStateObject(self.tx.Recipient)
+	self.rec = self.state.GetOrNewStateObject(self.msg.To())
 	return self.rec
 }
 
@@ -87,41 +121,41 @@ func (self *StateTransition) AddGas(amount *big.Int) {
 func (self *StateTransition) BuyGas() error {
 	var err error
 
-	sender := self.Sender()
-	if sender.Balance().Cmp(self.tx.GasValue()) < 0 {
-		return fmt.Errorf("Insufficient funds to pre-pay gas. Req %v, has %v", self.tx.GasValue(), sender.Balance())
+	sender := self.From()
+	if sender.Balance().Cmp(self.msg.GasValue()) < 0 {
+		return fmt.Errorf("Insufficient funds to pre-pay gas. Req %v, has %v", self.msg.GasValue(), sender.Balance())
 	}
 
 	coinbase := self.Coinbase()
-	err = coinbase.BuyGas(self.tx.Gas, self.tx.GasPrice)
+	err = coinbase.BuyGas(self.msg.Gas(), self.msg.GasPrice())
 	if err != nil {
 		return err
 	}
 
-	self.AddGas(self.tx.Gas)
-	sender.SubAmount(self.tx.GasValue())
+	self.AddGas(self.msg.Gas())
+	sender.SubAmount(self.msg.GasValue())
 
 	return nil
 }
 
 func (self *StateTransition) RefundGas() {
-	coinbase, sender := self.Coinbase(), self.Sender()
-	coinbase.RefundGas(self.gas, self.tx.GasPrice)
+	coinbase, sender := self.Coinbase(), self.From()
+	coinbase.RefundGas(self.gas, self.msg.GasPrice())
 
 	// Return remaining gas
-	remaining := new(big.Int).Mul(self.gas, self.tx.GasPrice)
+	remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
 	sender.AddAmount(remaining)
 }
 
 func (self *StateTransition) preCheck() (err error) {
 	var (
-		tx     = self.tx
-		sender = self.Sender()
+		msg    = self.msg
+		sender = self.From()
 	)
 
 	// Make sure this transaction's nonce is correct
-	if sender.Nonce != tx.Nonce {
-		return NonceError(tx.Nonce, sender.Nonce)
+	if sender.Nonce != msg.Nonce() {
+		return NonceError(msg.Nonce(), sender.Nonce)
 	}
 
 	// Pre-pay gas / Buy gas of the coinbase account
@@ -133,16 +167,16 @@ func (self *StateTransition) preCheck() (err error) {
 }
 
 func (self *StateTransition) TransitionState() (err error) {
-	statelogger.Debugf("(~) %x\n", self.tx.Hash())
+	statelogger.Debugf("(~) %x\n", self.msg.Hash())
 
 	// XXX Transactions after this point are considered valid.
 	if err = self.preCheck(); err != nil {
 		return
 	}
 
 	var (
-		tx     = self.tx
-		sender = self.Sender()
+		msg    = self.msg
+		sender = self.From()
 	)
 
 	defer self.RefundGas()
@@ -169,15 +203,15 @@ func (self *StateTransition) TransitionState() (err error) {
 	}
 
 	var ret []byte
-	vmenv := NewEnv(self.state, self.tx, self.block)
+	vmenv := self.VmEnv()
 	var ref vm.ClosureRef
-	if tx.CreatesContract() {
-		self.rec = MakeContract(tx, self.state)
+	if msg.CreatesContract() {
+		self.rec = MakeContract(msg, self.state)
 
-		ret, err, ref = vmenv.Create(sender, self.rec.Address(), self.tx.Data, self.gas, self.gasPrice, self.value)
+		ret, err, ref = vmenv.Create(sender, self.rec.Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
 		ref.SetCode(ret)
 	} else {
-		ret, err = vmenv.Call(self.Sender(), self.Receiver().Address(), self.tx.Data, self.gas, self.gasPrice, self.value)
+		ret, err = vmenv.Call(self.From(), self.To().Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
 	}
 	if err != nil {
 		statelogger.Debugln(err)
@@ -187,11 +221,11 @@ func (self *StateTransition) TransitionState() (err error) {
 }
 
 // Converts an transaction in to a state object
-func MakeContract(tx *types.Transaction, state *state.StateDB) *state.StateObject {
-	addr := tx.CreationAddress(state)
+func MakeContract(msg Message, state *state.StateDB) *state.StateObject {
+	addr := AddressFromMessage(msg)
 
 	contract := state.GetOrNewStateObject(addr)
-	contract.InitCode = tx.Data
+	contract.InitCode = msg.Data()
 
 	return contract
 }

core/transaction_pool.go

@@ -112,8 +112,8 @@ func (pool *TxPool) ValidateTransaction(tx *types.Transaction) error {
 		return fmt.Errorf("No last block on the block chain")
 	}
 
-	if len(tx.Recipient) != 0 && len(tx.Recipient) != 20 {
-		return fmt.Errorf("Invalid recipient. len = %d", len(tx.Recipient))
+	if len(tx.To()) != 0 && len(tx.To()) != 20 {
+		return fmt.Errorf("Invalid recipient. len = %d", len(tx.To()))
 	}
 
 	v, _, _ := tx.Curve()
@@ -124,15 +124,15 @@ func (pool *TxPool) ValidateTransaction(tx *types.Transaction) error {
 	// Get the sender
 	sender := pool.chainManager.State().GetAccount(tx.Sender())
 
-	totAmount := new(big.Int).Set(tx.Value)
+	totAmount := new(big.Int).Set(tx.Value())
 	// Make sure there's enough in the sender's account. Having insufficient
 	// funds won't invalidate this transaction but simple ignores it.
 	if sender.Balance().Cmp(totAmount) < 0 {
-		return fmt.Errorf("Insufficient amount in sender's (%x) account", tx.Sender())
+		return fmt.Errorf("Insufficient amount in sender's (%x) account", tx.From())
 	}
 
 	if tx.IsContract() {
-		if tx.GasPrice.Cmp(big.NewInt(minGasPrice)) < 0 {
+		if tx.GasPrice().Cmp(big.NewInt(minGasPrice)) < 0 {
 			return fmt.Errorf("Gasprice too low, %s given should be at least %d.", tx.GasPrice, minGasPrice)
 		}
 	}
@@ -160,10 +160,7 @@ func (self *TxPool) Add(tx *types.Transaction) error {
 
 	self.addTransaction(tx)
 
-	tmp := make([]byte, 4)
-	copy(tmp, tx.Recipient)
-
-	txplogger.Debugf("(t) %x => %x (%v) %x\n", tx.Sender()[:4], tmp, tx.Value, tx.Hash())
+	txplogger.Debugf("(t) %x => %x (%v) %x\n", tx.From()[:4], tx.To()[:4], tx.Value, tx.Hash())
 
 	// Notify the subscribers
 	go self.eventMux.Post(TxPreEvent{tx})
@@ -200,7 +197,7 @@ func (pool *TxPool) RemoveInvalid(state *state.StateDB) {
 		tx := e.Value.(*types.Transaction)
 		sender := state.GetAccount(tx.Sender())
 		err := pool.ValidateTransaction(tx)
-		if err != nil || sender.Nonce >= tx.Nonce {
+		if err != nil || sender.Nonce >= tx.Nonce() {
 			pool.pool.Remove(e)
 		}
 	}