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core: refactor initVerificationVM

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It needs only VM and function to get contract state. Also exposed this
method and extended Blockchainer. These changes are needed for the
next commit.
This commit is contained in:
Anna Shaleva 2021-03-11 20:15:23 +03:00
parent f7d74190f5
commit 1261dd5306
3 changed files with 10 additions and 5 deletions
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5
internal/fakechain/fakechain.go
View file

@ -80,6 +80,11 @@ func (chain *FakeChain) IsTxStillRelevant(t *transaction.Transaction, txpool *me
panic("TODO") panic("TODO")
} }
// InitVerificationVM initializes VM for witness check.
func (chain *FakeChain) InitVerificationVM(v *vm.VM, getContract func(util.Uint160) (*state.Contract, error), hash util.Uint160, witness *transaction.Witness) error {
panic("TODO")
}
// IsExtensibleAllowed implements Blockchainer interface. // IsExtensibleAllowed implements Blockchainer interface.
func (*FakeChain) IsExtensibleAllowed(uint160 util.Uint160) bool { func (*FakeChain) IsExtensibleAllowed(uint160 util.Uint160) bool {
return true return true

9
pkg/core/blockchain.go
View file

@ -1655,9 +1655,8 @@ var (
ErrInvalidVerificationContract = errors.New("verification contract is missing `verify` method") ErrInvalidVerificationContract = errors.New("verification contract is missing `verify` method")
) )
// initVerificationVM initializes VM for witness check. // InitVerificationVM initializes VM for witness check.
func (bc *Blockchain) initVerificationVM(ic *interop.Context, hash util.Uint160, witness *transaction.Witness) error { func (bc *Blockchain) InitVerificationVM(v *vm.VM, getContract func(util.Uint160) (*state.Contract, error), hash util.Uint160, witness *transaction.Witness) error {
v := ic.VM
if len(witness.VerificationScript) != 0 { if len(witness.VerificationScript) != 0 {
if witness.ScriptHash() != hash { if witness.ScriptHash() != hash {
return ErrWitnessHashMismatch return ErrWitnessHashMismatch
@ -1671,7 +1670,7 @@ func (bc *Blockchain) initVerificationVM(ic *interop.Context, hash util.Uint160,
} }
v.LoadScriptWithFlags(witness.VerificationScript, callflag.ReadOnly) v.LoadScriptWithFlags(witness.VerificationScript, callflag.ReadOnly)
} else { } else {
cs, err := ic.GetContract(hash) cs, err := getContract(hash)
if err != nil { if err != nil {
return ErrUnknownVerificationContract return ErrUnknownVerificationContract
} }
@ -1717,7 +1716,7 @@ func (bc *Blockchain) verifyHashAgainstScript(hash util.Uint160, witness *transa
vm.SetPriceGetter(interopCtx.GetPrice) vm.SetPriceGetter(interopCtx.GetPrice)
vm.LoadToken = contract.LoadToken(interopCtx) vm.LoadToken = contract.LoadToken(interopCtx)
vm.GasLimit = gas vm.GasLimit = gas
if err := bc.initVerificationVM(interopCtx, hash, witness); err != nil { if err := bc.InitVerificationVM(vm, interopCtx.GetContract, hash, witness); err != nil {
return 0, err return 0, err
} }
err := vm.Run() err := vm.Run()

1
pkg/core/blockchainer/blockchainer.go
View file

@ -25,6 +25,7 @@ type Blockchainer interface {
AddBlock(*block.Block) error AddBlock(*block.Block) error
CalculateClaimable(h util.Uint160, endHeight uint32) (*big.Int, error) CalculateClaimable(h util.Uint160, endHeight uint32) (*big.Int, error)
Close() Close()
InitVerificationVM(v *vm.VM, getContract func(util.Uint160) (*state.Contract, error), hash util.Uint160, witness *transaction.Witness) error
IsTxStillRelevant(t *transaction.Transaction, txpool *mempool.Pool, isPartialTx bool) bool IsTxStillRelevant(t *transaction.Transaction, txpool *mempool.Pool, isPartialTx bool) bool
HeaderHeight() uint32 HeaderHeight() uint32
GetBlock(hash util.Uint256) (*block.Block, error) GetBlock(hash util.Uint256) (*block.Block, error)