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Created generic message (easy for testing)

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This commit is contained in:
obscuren
2014-12-18 15:18:13 +01:00
parent 9e286e1c33
commit db494170dc
10 changed files with 159 additions and 102 deletions
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98
core/state_transition.go
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@ -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"
)
@ -27,7 +29,7 @@ import (
*/
type StateTransition struct {
coinbase, receiver []byte
tx *types.Transaction
msg Message
gas, gasPrice *big.Int
value *big.Int
data []byte
@ -35,10 +37,42 @@ type StateTransition struct {
block *types.Block
cb, rec, sen *state.StateObject
Env vm.Environment
}
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}
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 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 {
@ -49,17 +83,17 @@ 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
}
@ -67,7 +101,7 @@ func (self *StateTransition) Receiver() *state.StateObject {
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
@ -133,7 +167,7 @@ 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 {
@ -141,8 +175,8 @@ func (self *StateTransition) TransitionState() (err error) {
}
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
}