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native: don't call CreateNativeContractHash() in oracle contract

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Move oracleScript from global context to Oracle itself. We have the hash
already computed by NewContractMD, there is no need to repeat this
calculation.
This commit is contained in:
Roman Khimov 2021-01-22 11:28:13 +03:00
parent dfc23c4246
commit 6b9b37f170
4 changed files with 22 additions and 26 deletions
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2
pkg/core/blockchain.go
View file

@ -1395,7 +1395,7 @@ func (bc *Blockchain) verifyTxAttributes(tx *transaction.Transaction, isPartialT
if !hasOracle {
return fmt.Errorf("%w: oracle tx is not signed by oracle nodes", ErrInvalidAttribute)
}
if !bytes.Equal(tx.Script, native.GetOracleResponseScript()) {
if !bytes.Equal(tx.Script, bc.contracts.Oracle.GetOracleResponseScript()) {
return fmt.Errorf("%w: oracle tx has invalid script", ErrInvalidAttribute)
}
resp := tx.Attributes[i].Value.(*transaction.OracleResponse)

2
pkg/core/blockchain_test.go
View file

@ -500,7 +500,7 @@ func TestVerifyTx(t *testing.T) {
// We need to create new transaction,
// because hashes are cached after signing.
getOracleTx := func(t *testing.T) *transaction.Transaction {
tx := bc.newTestTx(h, native.GetOracleResponseScript())
tx := bc.newTestTx(h, orc.GetOracleResponseScript())
resp := &transaction.OracleResponse{
ID: 1,
Code: transaction.Success,

40
pkg/core/native/oracle.go
View file

@ -34,7 +34,8 @@ type Oracle struct {
GAS *GAS
NEO *NEO
Desig *Designate
Desig *Designate
oracleScript []byte
}
const (
@ -49,20 +50,6 @@ const (
oracleRequestPrice = 5000_0000
)
var oracleScript []byte
func init() {
_, h := state.CreateNativeContractHash(oracleContractID)
w := io.NewBufBinWriter()
emit.Int(w.BinWriter, 0)
emit.Opcodes(w.BinWriter, opcode.NEWARRAY)
emit.Int(w.BinWriter, int64(callflag.All))
emit.String(w.BinWriter, "finish")
emit.Bytes(w.BinWriter, h.BytesBE())
emit.Syscall(w.BinWriter, interopnames.SystemContractCall)
oracleScript = w.Bytes()
}
var (
prefixIDList = []byte{6}
prefixRequest = []byte{7}
@ -78,16 +65,18 @@ var (
ErrResponseNotFound = errors.New("oracle response not found")
)
// GetOracleResponseScript returns script for transaction with oracle response.
func GetOracleResponseScript() []byte {
b := make([]byte, len(oracleScript))
copy(b, oracleScript)
return b
}
func newOracle() *Oracle {
o := &Oracle{ContractMD: *interop.NewContractMD(nativenames.Oracle, oracleContractID)}
w := io.NewBufBinWriter()
emit.Int(w.BinWriter, 0)
emit.Opcodes(w.BinWriter, opcode.NEWARRAY)
emit.Int(w.BinWriter, int64(callflag.All))
emit.String(w.BinWriter, "finish")
emit.Bytes(w.BinWriter, o.Hash.BytesBE())
emit.Syscall(w.BinWriter, interopnames.SystemContractCall)
o.oracleScript = w.Bytes()
desc := newDescriptor("request", smartcontract.VoidType,
manifest.NewParameter("url", smartcontract.StringType),
manifest.NewParameter("filter", smartcontract.StringType),
@ -115,6 +104,13 @@ func newOracle() *Oracle {
return o
}
// GetOracleResponseScript returns script for transaction with oracle response.
func (o *Oracle) GetOracleResponseScript() []byte {
b := make([]byte, len(o.oracleScript))
copy(b, o.oracleScript)
return b
}
// OnPersist implements Contract interface.
func (o *Oracle) OnPersist(ic *interop.Context) error {
return nil

4
pkg/core/native_oracle_test.go
View file

@ -153,7 +153,7 @@ func TestOracle_Request(t *testing.T) {
err = bc.contracts.Designate.DesignateAsRole(ic, native.RoleOracle, keys.PublicKeys{pub})
require.NoError(t, err)
tx = transaction.New(netmode.UnitTestNet, native.GetOracleResponseScript(), 0)
tx = transaction.New(netmode.UnitTestNet, orc.GetOracleResponseScript(), 0)
ic.Tx = tx
ic.Block = bc.newBlock(tx)
@ -203,7 +203,7 @@ func TestOracle_Request(t *testing.T) {
_, err := orc.GetRequestInternal(bc.dao, reqID) // ensure ID is 2
require.NoError(t, err)
tx = transaction.New(netmode.UnitTestNet, native.GetOracleResponseScript(), 0)
tx = transaction.New(netmode.UnitTestNet, orc.GetOracleResponseScript(), 0)
tx.Attributes = []transaction.Attribute{{
Type: transaction.OracleResponseT,
Value: &transaction.OracleResponse{