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core: fix wrong endian used in interop functions

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C# uses ToArray() or UintXXX(bytes) here which interprets hashes as they
should be interpreted (BE, although they always convert to LE when converting
to String just for the fun of it). It leads to state difference for us at
block 2025204 where even though we have the same value for the key, the key
itself differs, ours:

dd2b538e2a0c1db1ae5061c15be14f916bd1e678e512ffcda6d9499d8e7fe97ee71fd6b8004583d9afe09cc4dadbd5deb63d01e061009b7cffdaa674beae0f930ebe6085af900093e5fe56b34a5c220ccdcf6efc336fc5000000000000000000000000000000000010

theirs:

dd2b538e2a0c1db1ae5061c15be14f916bd1e67861e0013db6ded5dbdac49ce0afd9834500b8d61fe77ee97f8e9d49d9a6cdff12e5009b7cffdaa674beae0f930ebe6085af900093e5fe56b34a5c220ccdcf6efc336fc5000000000000000000000000000000000010

In this key there is a tx hash encoded
(e512ffcda6d9499d8e7fe97ee71fd6b84583d9afe09cc4dadbd5deb63d01e061 in LE used
by all the tools like neoscan).

I love Neo.
This commit is contained in:
Roman Khimov 2020-03-05 19:44:09 +03:00
parent fbdc60b731
commit a9abd3d841
3 changed files with 9 additions and 9 deletions
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4
pkg/core/interop_neo.go
View file

@ -60,7 +60,7 @@ func (ic *interopContext) headerGetMerkleRoot(v *vm.VM) error {
if err != nil { if err != nil {
return err return err
} }
v.Estack().PushVal(header.MerkleRoot.BytesLE()) v.Estack().PushVal(header.MerkleRoot.BytesBE())
return nil return nil
} }
@ -70,7 +70,7 @@ func (ic *interopContext) headerGetNextConsensus(v *vm.VM) error {
if err != nil { if err != nil {
return err return err
} }
v.Estack().PushVal(header.NextConsensus.BytesLE()) v.Estack().PushVal(header.NextConsensus.BytesBE())
return nil return nil
} }

4
pkg/core/interop_neo_test.go
View file

@ -147,7 +147,7 @@ func TestHeaderGetMerkleRoot(t *testing.T) {
err := context.headerGetMerkleRoot(v) err := context.headerGetMerkleRoot(v)
require.NoError(t, err) require.NoError(t, err)
value := v.Estack().Pop().Value() value := v.Estack().Pop().Value()
require.Equal(t, block.MerkleRoot.BytesLE(), value) require.Equal(t, block.MerkleRoot.BytesBE(), value)
} }
func TestHeaderGetNextConsensus(t *testing.T) { func TestHeaderGetNextConsensus(t *testing.T) {
@ -157,7 +157,7 @@ func TestHeaderGetNextConsensus(t *testing.T) {
err := context.headerGetNextConsensus(v) err := context.headerGetNextConsensus(v)
require.NoError(t, err) require.NoError(t, err)
value := v.Estack().Pop().Value() value := v.Estack().Pop().Value()
require.Equal(t, block.NextConsensus.BytesLE(), value) require.Equal(t, block.NextConsensus.BytesBE(), value)
} }
func TestTxGetAttributes(t *testing.T) { func TestTxGetAttributes(t *testing.T) {

10
pkg/core/interop_system.go
View file

@ -41,7 +41,7 @@ func getBlockHashFromElement(bc Blockchainer, element *vm.Element) (util.Uint256
} }
hash = bc.GetHeaderHash(int(hashint)) hash = bc.GetHeaderHash(int(hashint))
} else { } else {
return util.Uint256DecodeBytesLE(hashbytes) return util.Uint256DecodeBytesBE(hashbytes)
} }
return hash, nil return hash, nil
} }
@ -102,7 +102,7 @@ func (ic *interopContext) bcGetHeight(v *vm.VM) error {
// returns transaction and its height if it's present in the blockchain. // returns transaction and its height if it's present in the blockchain.
func getTransactionAndHeight(cd *cachedDao, v *vm.VM) (*transaction.Transaction, uint32, error) { func getTransactionAndHeight(cd *cachedDao, v *vm.VM) (*transaction.Transaction, uint32, error) {
hashbytes := v.Estack().Pop().Bytes() hashbytes := v.Estack().Pop().Bytes()
hash, err := util.Uint256DecodeBytesLE(hashbytes) hash, err := util.Uint256DecodeBytesBE(hashbytes)
if err != nil { if err != nil {
return nil, 0, err return nil, 0, err
} }
@ -161,7 +161,7 @@ func (ic *interopContext) headerGetHash(v *vm.VM) error {
if err != nil { if err != nil {
return err return err
} }
v.Estack().PushVal(header.Hash().BytesLE()) v.Estack().PushVal(header.Hash().BytesBE())
return nil return nil
} }
@ -171,7 +171,7 @@ func (ic *interopContext) headerGetPrevHash(v *vm.VM) error {
if err != nil { if err != nil {
return err return err
} }
v.Estack().PushVal(header.PrevHash.BytesLE()) v.Estack().PushVal(header.PrevHash.BytesBE())
return nil return nil
} }
@ -238,7 +238,7 @@ func (ic *interopContext) txGetHash(v *vm.VM) error {
if !ok { if !ok {
return errors.New("value is not a transaction") return errors.New("value is not a transaction")
} }
v.Estack().PushVal(tx.Hash().BytesLE()) v.Estack().PushVal(tx.Hash().BytesBE())
return nil return nil
} }