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path: root/core/state_transition.go
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Diffstat (limited to 'core/state_transition.go')
-rw-r--r--core/state_transition.go35
1 files changed, 20 insertions, 15 deletions
diff --git a/core/state_transition.go b/core/state_transition.go
index 3d11a0464..7672fa3ff 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -62,7 +62,6 @@ type Message interface {
func AddressFromMessage(msg Message) common.Address {
from, _ := msg.From()
-
return crypto.CreateAddress(from, msg.Nonce())
}
@@ -109,9 +108,12 @@ func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateOb
func (self *StateTransition) Coinbase() *state.StateObject {
return self.state.GetOrNewStateObject(self.coinbase)
}
-func (self *StateTransition) From() *state.StateObject {
- f, _ := self.msg.From()
- return self.state.GetOrNewStateObject(f)
+func (self *StateTransition) From() (*state.StateObject, error) {
+ f, err := self.msg.From()
+ if err != nil {
+ return nil, err
+ }
+ return self.state.GetOrNewStateObject(f), nil
}
func (self *StateTransition) To() *state.StateObject {
if self.msg == nil {
@@ -140,7 +142,10 @@ func (self *StateTransition) AddGas(amount *big.Int) {
func (self *StateTransition) BuyGas() error {
var err error
- sender := self.From()
+ sender, err := self.From()
+ if err != nil {
+ return err
+ }
if sender.Balance().Cmp(MessageGasValue(self.msg)) < 0 {
return fmt.Errorf("insufficient ETH for gas (%x). Req %v, has %v", sender.Address().Bytes()[:4], MessageGasValue(self.msg), sender.Balance())
}
@@ -159,10 +164,11 @@ func (self *StateTransition) BuyGas() error {
}
func (self *StateTransition) preCheck() (err error) {
- var (
- msg = self.msg
- sender = self.From()
- )
+ msg := self.msg
+ sender, err := self.From()
+ if err != nil {
+ return err
+ }
// Make sure this transaction's nonce is correct
if sender.Nonce() != msg.Nonce() {
@@ -185,10 +191,8 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
return
}
- var (
- msg = self.msg
- sender = self.From()
- )
+ msg := self.msg
+ sender, _ := self.From() // err checked in preCheck
// Pay intrinsic gas
if err = self.UseGas(IntrinsicGas(self.msg)); err != nil {
@@ -212,7 +216,7 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
} else {
// Increment the nonce for the next transaction
self.state.SetNonce(sender.Address(), sender.Nonce()+1)
- ret, err = vmenv.Call(self.From(), self.To().Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
+ ret, err = vmenv.Call(sender, self.To().Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
}
if err != nil && IsValueTransferErr(err) {
@@ -226,7 +230,8 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
}
func (self *StateTransition) refundGas() {
- coinbase, sender := self.Coinbase(), self.From()
+ coinbase := self.Coinbase()
+ sender, _ := self.From() // err already checked
// Return remaining gas
remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
sender.AddBalance(remaining)