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Merge pull request #1034 from nspcc-dev/neo3/interop/gettransaction

Browse source 
*: implement System.Blockchain.GetTransaction and System.Blockchain.GetBlock interops
This commit is contained in:
Roman Khimov 2020-06-10 10:16:03 +03:00 committed by GitHub
commit 851e72fd97
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 326 additions and 395 deletions
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4
pkg/compiler/codegen.go
View file

@ -1053,6 +1053,10 @@ func (c *codegen) convertSyscall(expr *ast.CallExpr, api, name string) {
emit.Opcode(c.prog.BinWriter, opcode.PACK)
}
emit.Syscall(c.prog.BinWriter, api)
switch name {
case "GetTransaction", "GetBlock":
c.emitConvert(stackitem.StructT)
}
// This NOP instruction is basically not needed, but if we do, we have a
// one to one matching avm file with neo-python which is very nice for debugging.

21
pkg/compiler/syscall.go
View file

@ -7,10 +7,6 @@ var syscalls = map[string]map[string]string{
"GetVotes": "Neo.Account.GetVotes",
"IsStandard": "Neo.Account.IsStandard",
},
"attribute": {
"GetUsage": "Neo.Attribute.GetUsage",
"GetData": "Neo.Attribute.GetData",
},
"crypto": {
"ECDsaVerify": "Neo.Crypto.ECDsaVerify",
},
@ -40,12 +36,13 @@ var syscalls = map[string]map[string]string{
},
"blockchain": {
"GetAccount": "Neo.Blockchain.GetAccount",
"GetBlock": "Neo.Blockchain.GetBlock",
"GetBlock": "System.Blockchain.GetBlock",
"GetContract": "Neo.Blockchain.GetContract",
"GetHeader": "Neo.Blockchain.GetHeader",
"GetHeight": "Neo.Blockchain.GetHeight",
"GetTransaction": "Neo.Blockchain.GetTransaction",
"GetTransactionHeight": "Neo.Blockchain.GetTransactionHeight",
"GetTransaction": "System.Blockchain.GetTransaction",
"GetTransactionFromBlock": "System.Blockchain.GetTransactionFromBlock",
"GetTransactionHeight": "System.Blockchain.GetTransactionHeight",
"GetValidators": "Neo.Blockchain.GetValidators",
},
"header": {
@ -58,16 +55,6 @@ var syscalls = map[string]map[string]string{
"GetConsensusData": "Neo.Header.GetConsensusData",
"GetNextConsensus": "Neo.Header.GetNextConsensus",
},
"block": {
"GetTransactionCount": "Neo.Block.GetTransactionCount",
"GetTransactions": "Neo.Block.GetTransactions",
"GetTransaction": "Neo.Block.GetTransaction",
},
"transaction": {
"GetAttributes": "Neo.Transaction.GetAttributes",
"GetHash": "Neo.Transaction.GetHash",
"GetWitnesses": "Neo.Transaction.GetWitnesses",
},
"contract": {
"GetScript": "Neo.Contract.GetScript",
"IsPayable": "Neo.Contract.IsPayable",

7
pkg/core/gas_price.go
View file

@ -43,20 +43,17 @@ func getSyscallPrice(v *vm.VM, id uint32) util.Fixed8 {
const (
neoContractCreate = 0x6ea56cf6 // Neo.Contract.Create
neoContractMigrate = 0x90621b47 // Neo.Contract.Migrate
antSharesContractCreate = 0x2a28d29b // AntShares.Contract.Create
antSharesContractMigrate = 0xa934c8bb // AntShares.Contract.Migrate
systemStoragePut = 0x84183fe6 // System.Storage.Put
systemStoragePutEx = 0x3a9be173 // System.Storage.PutEx
neoStoragePut = 0xf541a152 // Neo.Storage.Put
antSharesStoragePut = 0x5f300a9e // AntShares.Storage.Put
)
estack := v.Estack()
switch id {
case neoContractCreate, neoContractMigrate, antSharesContractCreate, antSharesContractMigrate:
case neoContractCreate, neoContractMigrate:
return smartcontract.GetDeploymentPrice(smartcontract.PropertyState(estack.Peek(3).BigInt().Int64()))
case systemStoragePut, systemStoragePutEx, neoStoragePut, antSharesStoragePut:
case systemStoragePut, systemStoragePutEx, neoStoragePut:
// price for storage PUT is 1 GAS per 1 KiB
keySize := len(estack.Peek(1).Bytes())
valSize := len(estack.Peek(2).Bytes())

58
pkg/core/interop_neo.go
View file

@ -57,42 +57,6 @@ func headerGetNextConsensus(ic *interop.Context, v *vm.VM) error {
return nil
}
// txGetAttributes returns current transaction attributes.
func txGetAttributes(ic *interop.Context, v *vm.VM) error {
txInterface := v.Estack().Pop().Value()
tx, ok := txInterface.(*transaction.Transaction)
if !ok {
return errors.New("value is not a transaction")
}
if len(tx.Attributes) > vm.MaxArraySize {
return errors.New("too many attributes")
}
attrs := make([]stackitem.Item, 0, len(tx.Attributes))
for i := range tx.Attributes {
attrs = append(attrs, stackitem.NewInterop(&tx.Attributes[i]))
}
v.Estack().PushVal(attrs)
return nil
}
// txGetWitnesses returns current transaction witnesses.
func txGetWitnesses(ic *interop.Context, v *vm.VM) error {
txInterface := v.Estack().Pop().Value()
tx, ok := txInterface.(*transaction.Transaction)
if !ok {
return errors.New("value is not a transaction")
}
if len(tx.Scripts) > vm.MaxArraySize {
return errors.New("too many outputs")
}
scripts := make([]stackitem.Item, 0, len(tx.Scripts))
for i := range tx.Scripts {
scripts = append(scripts, stackitem.NewInterop(&tx.Scripts[i]))
}
v.Estack().PushVal(scripts)
return nil
}
// witnessGetVerificationScript returns current witness' script.
func witnessGetVerificationScript(ic *interop.Context, v *vm.VM) error {
witInterface := v.Estack().Pop().Value()
@ -107,28 +71,6 @@ func witnessGetVerificationScript(ic *interop.Context, v *vm.VM) error {
return nil
}
// attrGetData returns tx attribute data.
func attrGetData(ic *interop.Context, v *vm.VM) error {
attrInterface := v.Estack().Pop().Value()
attr, ok := attrInterface.(*transaction.Attribute)
if !ok {
return fmt.Errorf("%T is not an attribute", attr)
}
v.Estack().PushVal(attr.Data)
return nil
}
// attrGetData returns tx attribute usage field.
func attrGetUsage(ic *interop.Context, v *vm.VM) error {
attrInterface := v.Estack().Pop().Value()
attr, ok := attrInterface.(*transaction.Attribute)
if !ok {
return fmt.Errorf("%T is not an attribute", attr)
}
v.Estack().PushVal(int(attr.Usage))
return nil
}
// bcGetAccount returns or creates an account.
func bcGetAccount(ic *interop.Context, v *vm.VM) error {
accbytes := v.Estack().Pop().Bytes()

47
pkg/core/interop_neo_test.go
View file

@ -178,16 +178,6 @@ func TestHeaderGetNextConsensus(t *testing.T) {
require.Equal(t, block.NextConsensus.BytesBE(), value)
}
func TestTxGetAttributes(t *testing.T) {
v, tx, context, chain := createVMAndPushTX(t)
defer chain.Close()
err := txGetAttributes(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value().([]stackitem.Item)
require.Equal(t, tx.Attributes[0].Usage, value[0].Value().(*transaction.Attribute).Usage)
}
func TestWitnessGetVerificationScript(t *testing.T) {
v := vm.New()
script := []byte{byte(opcode.PUSHM1), byte(opcode.RET)}
@ -280,28 +270,6 @@ func TestECDSAVerify(t *testing.T) {
})
}
func TestAttrGetData(t *testing.T) {
v, tx, context, chain := createVMAndTX(t)
defer chain.Close()
v.Estack().PushVal(stackitem.NewInterop(&tx.Attributes[0]))
err := attrGetData(context, v)
require.NoError(t, err)
data := v.Estack().Pop().Value()
require.Equal(t, tx.Attributes[0].Data, data)
}
func TestAttrGetUsage(t *testing.T) {
v, tx, context, chain := createVMAndTX(t)
defer chain.Close()
v.Estack().PushVal(stackitem.NewInterop(&tx.Attributes[0]))
err := attrGetUsage(context, v)
require.NoError(t, err)
usage := v.Estack().Pop().Value()
require.Equal(t, big.NewInt(int64(tx.Attributes[0].Usage)), usage)
}
func TestAccountGetScriptHash(t *testing.T) {
v, accState, context, chain := createVMAndAccState(t)
defer chain.Close()
@ -337,12 +305,25 @@ func TestContractIsPayable(t *testing.T) {
// Helper functions to create VM, InteropContext, TX, Account, Contract.
func createVM(t *testing.T) (*vm.VM, *interop.Context, *Blockchain) {
v := vm.New()
chain := newTestChain(t)
context := chain.newInteropContext(trigger.Application,
dao.NewSimple(storage.NewMemoryStore()), nil, nil)
return v, context, chain
}
func createVMAndPushBlock(t *testing.T) (*vm.VM, *block.Block, *interop.Context, *Blockchain) {
v, block, context, chain := createVMAndBlock(t)
v.Estack().PushVal(stackitem.NewInterop(block))
return v, block, context, chain
}
func createVMAndBlock(t *testing.T) (*vm.VM, *block.Block, *interop.Context, *Blockchain) {
v := vm.New()
block := newDumbBlock()
chain := newTestChain(t)
context := chain.newInteropContext(trigger.Application, dao.NewSimple(storage.NewMemoryStore()), block, nil)
v.Estack().PushVal(stackitem.NewInterop(block))
return v, block, context, chain
}

133
pkg/core/interop_system.go
View file

@ -4,6 +4,7 @@ import (
"errors"
"fmt"
"math"
"math/big"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
@ -22,6 +23,9 @@ import (
const (
// MaxStorageKeyLen is the maximum length of a key for storage items.
MaxStorageKeyLen = 1024
// MaxTraceableBlocks is the maximum number of blocks before current chain
// height we're able to give information about.
MaxTraceableBlocks = transaction.MaxValidUntilBlockIncrement
)
// StorageContext contains storing script hash and read/write flag, it's used as
@ -49,6 +53,20 @@ func getBlockHashFromElement(bc blockchainer.Blockchainer, element *vm.Element)
return hash, nil
}
// blockToStackItem converts block.Block to stackitem.Item
func blockToStackItem(b *block.Block) stackitem.Item {
return stackitem.NewArray([]stackitem.Item{
stackitem.NewByteArray(b.Hash().BytesBE()),
stackitem.NewBigInteger(big.NewInt(int64(b.Version))),
stackitem.NewByteArray(b.PrevHash.BytesBE()),
stackitem.NewByteArray(b.MerkleRoot.BytesBE()),
stackitem.NewBigInteger(big.NewInt(int64(b.Timestamp))),
stackitem.NewBigInteger(big.NewInt(int64(b.Index))),
stackitem.NewByteArray(b.NextConsensus.BytesBE()),
stackitem.NewBigInteger(big.NewInt(int64(len(b.Transactions)))),
})
}
// bcGetBlock returns current block.
func bcGetBlock(ic *interop.Context, v *vm.VM) error {
hash, err := getBlockHashFromElement(ic.Chain, v.Estack().Pop())
@ -56,10 +74,10 @@ func bcGetBlock(ic *interop.Context, v *vm.VM) error {
return err
}
block, err := ic.Chain.GetBlock(hash)
if err != nil {
v.Estack().PushVal([]byte{})
if err != nil || !isTraceableBlock(ic, block.Index) {
v.Estack().PushVal(stackitem.Null{})
} else {
v.Estack().PushVal(stackitem.NewInterop(block))
v.Estack().PushVal(blockToStackItem(block))
}
return nil
}
@ -112,21 +130,65 @@ func getTransactionAndHeight(cd *dao.Cached, v *vm.VM) (*transaction.Transaction
return cd.GetTransaction(hash)
}
// isTraceableBlock defines whether we're able to give information about
// the block with index specified.
func isTraceableBlock(ic *interop.Context, index uint32) bool {
height := ic.Chain.BlockHeight()
return index <= height && index+MaxTraceableBlocks > height
}
// transactionToStackItem converts transaction.Transaction to stackitem.Item
func transactionToStackItem(t *transaction.Transaction) stackitem.Item {
return stackitem.NewArray([]stackitem.Item{
stackitem.NewByteArray(t.Hash().BytesBE()),
stackitem.NewBigInteger(big.NewInt(int64(t.Version))),
stackitem.NewBigInteger(big.NewInt(int64(t.Nonce))),
stackitem.NewByteArray(t.Sender.BytesBE()),
stackitem.NewBigInteger(big.NewInt(int64(t.SystemFee))),
stackitem.NewBigInteger(big.NewInt(int64(t.NetworkFee))),
stackitem.NewBigInteger(big.NewInt(int64(t.ValidUntilBlock))),
stackitem.NewByteArray(t.Script),
})
}
// bcGetTransaction returns transaction.
func bcGetTransaction(ic *interop.Context, v *vm.VM) error {
tx, _, err := getTransactionAndHeight(ic.DAO, v)
tx, h, err := getTransactionAndHeight(ic.DAO, v)
if err != nil || !isTraceableBlock(ic, h) {
v.Estack().PushVal(stackitem.Null{})
return nil
}
v.Estack().PushVal(transactionToStackItem(tx))
return nil
}
// bcGetTransactionFromBlock returns transaction with the given index from the
// block with height or hash specified.
func bcGetTransactionFromBlock(ic *interop.Context, v *vm.VM) error {
hash, err := getBlockHashFromElement(ic.Chain, v.Estack().Pop())
if err != nil {
return err
}
v.Estack().PushVal(stackitem.NewInterop(tx))
block, err := ic.DAO.GetBlock(hash)
if err != nil || !isTraceableBlock(ic, block.Index) {
v.Estack().PushVal(stackitem.Null{})
return nil
}
index := v.Estack().Pop().BigInt().Int64()
if index < 0 || index >= int64(len(block.Transactions)) {
return errors.New("wrong transaction index")
}
tx := block.Transactions[index]
v.Estack().PushVal(tx.Hash().BytesBE())
return nil
}
// bcGetTransactionHeight returns transaction height.
func bcGetTransactionHeight(ic *interop.Context, v *vm.VM) error {
_, h, err := getTransactionAndHeight(ic.DAO, v)
if err != nil {
return err
if err != nil || !isTraceableBlock(ic, h) {
v.Estack().PushVal(-1)
return nil
}
v.Estack().PushVal(h)
return nil
@ -188,63 +250,6 @@ func headerGetTimestamp(ic *interop.Context, v *vm.VM) error {
return nil
}
// blockGetTransactionCount returns transactions count in the given block.
func blockGetTransactionCount(ic *interop.Context, v *vm.VM) error {
blockInterface := v.Estack().Pop().Value()
block, ok := blockInterface.(*block.Block)
if !ok {
return errors.New("value is not a block")
}
v.Estack().PushVal(len(block.Transactions))
return nil
}
// blockGetTransactions returns transactions from the given block.
func blockGetTransactions(ic *interop.Context, v *vm.VM) error {
blockInterface := v.Estack().Pop().Value()
block, ok := blockInterface.(*block.Block)
if !ok {
return errors.New("value is not a block")
}
if len(block.Transactions) > vm.MaxArraySize {
return errors.New("too many transactions")
}
txes := make([]stackitem.Item, 0, len(block.Transactions))
for _, tx := range block.Transactions {
txes = append(txes, stackitem.NewInterop(tx))
}
v.Estack().PushVal(txes)
return nil
}
// blockGetTransaction returns transaction with the given number from the given
// block.
func blockGetTransaction(ic *interop.Context, v *vm.VM) error {
blockInterface := v.Estack().Pop().Value()
block, ok := blockInterface.(*block.Block)
if !ok {
return errors.New("value is not a block")
}
index := v.Estack().Pop().BigInt().Int64()
if index < 0 || index >= int64(len(block.Transactions)) {
return errors.New("wrong transaction index")
}
tx := block.Transactions[index]
v.Estack().PushVal(stackitem.NewInterop(tx))
return nil
}
// txGetHash returns transaction's hash.
func txGetHash(ic *interop.Context, v *vm.VM) error {
txInterface := v.Estack().Pop().Value()
tx, ok := txInterface.(*transaction.Transaction)
if !ok {
return errors.New("value is not a transaction")
}
v.Estack().PushVal(tx.Hash().BytesBE())
return nil
}
// engineGetScriptContainer returns transaction that contains the script being
// run.
func engineGetScriptContainer(ic *interop.Context, v *vm.VM) error {

147
pkg/core/interop_system_test.go Normal file
View file

@ -0,0 +1,147 @@
package core
import (
"math/big"
"testing"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/stretchr/testify/require"
)
func TestBCGetTransaction(t *testing.T) {
v, tx, context, chain := createVMAndTX(t)
defer chain.Close()
t.Run("success", func(t *testing.T) {
require.NoError(t, context.DAO.StoreAsTransaction(tx, 0))
v.Estack().PushVal(tx.Hash().BytesBE())
err := bcGetTransaction(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value()
actual, ok := value.([]stackitem.Item)
require.True(t, ok)
require.Equal(t, 8, len(actual))
require.Equal(t, tx.Hash().BytesBE(), actual[0].Value().([]byte))
require.Equal(t, int64(tx.Version), actual[1].Value().(*big.Int).Int64())
require.Equal(t, int64(tx.Nonce), actual[2].Value().(*big.Int).Int64())
require.Equal(t, tx.Sender.BytesBE(), actual[3].Value().([]byte))
require.Equal(t, int64(tx.SystemFee), actual[4].Value().(*big.Int).Int64())
require.Equal(t, int64(tx.NetworkFee), actual[5].Value().(*big.Int).Int64())
require.Equal(t, int64(tx.ValidUntilBlock), actual[6].Value().(*big.Int).Int64())
require.Equal(t, tx.Script, actual[7].Value().([]byte))
})
t.Run("isn't traceable", func(t *testing.T) {
require.NoError(t, context.DAO.StoreAsTransaction(tx, 1))
v.Estack().PushVal(tx.Hash().BytesBE())
err := bcGetTransaction(context, v)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
t.Run("bad hash", func(t *testing.T) {
require.NoError(t, context.DAO.StoreAsTransaction(tx, 1))
v.Estack().PushVal(tx.Hash().BytesLE())
err := bcGetTransaction(context, v)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
}
func TestBCGetTransactionFromBlock(t *testing.T) {
v, block, context, chain := createVMAndBlock(t)
defer chain.Close()
require.NoError(t, chain.AddBlock(chain.newBlock()))
require.NoError(t, context.DAO.StoreAsBlock(block))
t.Run("success", func(t *testing.T) {
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value()
actual, ok := value.([]byte)
require.True(t, ok)
require.Equal(t, block.Transactions[0].Hash().BytesBE(), actual)
})
t.Run("invalid block hash", func(t *testing.T) {
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesBE()[:10])
err := bcGetTransactionFromBlock(context, v)
require.Error(t, err)
})
t.Run("isn't traceable", func(t *testing.T) {
block.Index = 2
require.NoError(t, context.DAO.StoreAsBlock(block))
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context, v)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
t.Run("bad block hash", func(t *testing.T) {
block.Index = 1
require.NoError(t, context.DAO.StoreAsBlock(block))
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesLE())
err := bcGetTransactionFromBlock(context, v)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
t.Run("bad transaction index", func(t *testing.T) {
require.NoError(t, context.DAO.StoreAsBlock(block))
v.Estack().PushVal(1)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context, v)
require.Error(t, err)
})
}
func TestBCGetBlock(t *testing.T) {
v, context, chain := createVM(t)
defer chain.Close()
block := chain.newBlock()
require.NoError(t, chain.AddBlock(block))
t.Run("success", func(t *testing.T) {
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetBlock(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value()
actual, ok := value.([]stackitem.Item)
require.True(t, ok)
require.Equal(t, 8, len(actual))
require.Equal(t, block.Hash().BytesBE(), actual[0].Value().([]byte))
require.Equal(t, int64(block.Version), actual[1].Value().(*big.Int).Int64())
require.Equal(t, block.PrevHash.BytesBE(), actual[2].Value().([]byte))
require.Equal(t, block.MerkleRoot.BytesBE(), actual[3].Value().([]byte))
require.Equal(t, int64(block.Timestamp), actual[4].Value().(*big.Int).Int64())
require.Equal(t, int64(block.Index), actual[5].Value().(*big.Int).Int64())
require.Equal(t, block.NextConsensus.BytesBE(), actual[6].Value().([]byte))
require.Equal(t, int64(len(block.Transactions)), actual[7].Value().(*big.Int).Int64())
})
t.Run("bad hash", func(t *testing.T) {
v.Estack().PushVal(block.Hash().BytesLE())
err := bcGetTransaction(context, v)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
}

55
pkg/core/interops.go
View file

@ -62,14 +62,12 @@ func getInteropFromSlice(ic *interop.Context, slice []interop.Function) func(uin
// All lists are sorted, keep 'em this way, please.
var systemInterops = []interop.Function{
{Name: "System.Block.GetTransaction", Func: blockGetTransaction, Price: 1},
{Name: "System.Block.GetTransactionCount", Func: blockGetTransactionCount, Price: 1},
{Name: "System.Block.GetTransactions", Func: blockGetTransactions, Price: 1},
{Name: "System.Blockchain.GetBlock", Func: bcGetBlock, Price: 200},
{Name: "System.Blockchain.GetBlock", Func: bcGetBlock, Price: 250},
{Name: "System.Blockchain.GetContract", Func: bcGetContract, Price: 100},
{Name: "System.Blockchain.GetHeader", Func: bcGetHeader, Price: 100},
{Name: "System.Blockchain.GetHeight", Func: bcGetHeight, Price: 1},
{Name: "System.Blockchain.GetTransaction", Func: bcGetTransaction, Price: 200},
{Name: "System.Blockchain.GetTransaction", Func: bcGetTransaction, Price: 100},
{Name: "System.Blockchain.GetTransactionFromBlock", Func: bcGetTransactionFromBlock, Price: 100},
{Name: "System.Blockchain.GetTransactionHeight", Func: bcGetTransactionHeight, Price: 100},
{Name: "System.Contract.Call", Func: contractCall, Price: 1},
{Name: "System.Contract.CallEx", Func: contractCallEx, Price: 1},
@ -98,25 +96,16 @@ var systemInterops = []interop.Function{
{Name: "System.Storage.Put", Func: storagePut, Price: 0}, // These don't have static price in C# code.
{Name: "System.Storage.PutEx", Func: storagePutEx, Price: 0},
{Name: "System.StorageContext.AsReadOnly", Func: storageContextAsReadOnly, Price: 1},
{Name: "System.Transaction.GetHash", Func: txGetHash, Price: 1},
}
var neoInterops = []interop.Function{
{Name: "Neo.Account.GetBalance", Func: accountGetBalance, Price: 1},
{Name: "Neo.Account.GetScriptHash", Func: accountGetScriptHash, Price: 1},
{Name: "Neo.Account.IsStandard", Func: accountIsStandard, Price: 100},
{Name: "Neo.Attribute.GetData", Func: attrGetData, Price: 1},
{Name: "Neo.Attribute.GetUsage", Func: attrGetUsage, Price: 1},
{Name: "Neo.Block.GetTransaction", Func: blockGetTransaction, Price: 1},
{Name: "Neo.Block.GetTransactionCount", Func: blockGetTransactionCount, Price: 1},
{Name: "Neo.Block.GetTransactions", Func: blockGetTransactions, Price: 1},
{Name: "Neo.Blockchain.GetAccount", Func: bcGetAccount, Price: 100},
{Name: "Neo.Blockchain.GetBlock", Func: bcGetBlock, Price: 200},
{Name: "Neo.Blockchain.GetContract", Func: bcGetContract, Price: 100},
{Name: "Neo.Blockchain.GetHeader", Func: bcGetHeader, Price: 100},
{Name: "Neo.Blockchain.GetHeight", Func: bcGetHeight, Price: 1},
{Name: "Neo.Blockchain.GetTransaction", Func: bcGetTransaction, Price: 100},
{Name: "Neo.Blockchain.GetTransactionHeight", Func: bcGetTransactionHeight, Price: 100},
{Name: "Neo.Contract.Create", Func: contractCreate, Price: 0},
{Name: "Neo.Contract.Destroy", Func: contractDestroy, Price: 1},
{Name: "Neo.Contract.GetScript", Func: contractGetScript, Price: 1},
@ -157,49 +146,11 @@ var neoInterops = []interop.Function{
{Name: "Neo.Storage.GetReadOnlyContext", Func: storageGetReadOnlyContext, Price: 1},
{Name: "Neo.Storage.Put", Func: storagePut, Price: 0},
{Name: "Neo.StorageContext.AsReadOnly", Func: storageContextAsReadOnly, Price: 1},
{Name: "Neo.Transaction.GetAttributes", Func: txGetAttributes, Price: 1},
{Name: "Neo.Transaction.GetHash", Func: txGetHash, Price: 1},
{Name: "Neo.Transaction.GetWitnesses", Func: txGetWitnesses, Price: 200},
{Name: "Neo.Witness.GetVerificationScript", Func: witnessGetVerificationScript, Price: 100},
// Aliases.
{Name: "Neo.Iterator.Next", Func: enumerator.Next, Price: 1},
{Name: "Neo.Iterator.Value", Func: enumerator.Value, Price: 1},
// Old compatibility APIs.
{Name: "AntShares.Account.GetBalance", Func: accountGetBalance, Price: 1},
{Name: "AntShares.Account.GetScriptHash", Func: accountGetScriptHash, Price: 1},
{Name: "AntShares.Attribute.GetData", Func: attrGetData, Price: 1},
{Name: "AntShares.Attribute.GetUsage", Func: attrGetUsage, Price: 1},
{Name: "AntShares.Block.GetTransaction", Func: blockGetTransaction, Price: 1},
{Name: "AntShares.Block.GetTransactionCount", Func: blockGetTransactionCount, Price: 1},
{Name: "AntShares.Block.GetTransactions", Func: blockGetTransactions, Price: 1},
{Name: "AntShares.Blockchain.GetAccount", Func: bcGetAccount, Price: 100},
{Name: "AntShares.Blockchain.GetBlock", Func: bcGetBlock, Price: 200},
{Name: "AntShares.Blockchain.GetContract", Func: bcGetContract, Price: 100},
{Name: "AntShares.Blockchain.GetHeader", Func: bcGetHeader, Price: 100},
{Name: "AntShares.Blockchain.GetHeight", Func: bcGetHeight, Price: 1},
{Name: "AntShares.Blockchain.GetTransaction", Func: bcGetTransaction, Price: 100},
{Name: "AntShares.Contract.Create", Func: contractCreate, Price: 0},
{Name: "AntShares.Contract.Destroy", Func: contractDestroy, Price: 1},
{Name: "AntShares.Contract.GetScript", Func: contractGetScript, Price: 1},
{Name: "AntShares.Contract.GetStorageContext", Func: contractGetStorageContext, Price: 1},
{Name: "AntShares.Contract.Migrate", Func: contractMigrate, Price: 0},
{Name: "AntShares.Header.GetHash", Func: headerGetHash, Price: 1},
{Name: "AntShares.Header.GetMerkleRoot", Func: headerGetMerkleRoot, Price: 1},
{Name: "AntShares.Header.GetNextConsensus", Func: headerGetNextConsensus, Price: 1},
{Name: "AntShares.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
{Name: "AntShares.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
{Name: "AntShares.Header.GetVersion", Func: headerGetVersion, Price: 1},
{Name: "AntShares.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
{Name: "AntShares.Runtime.Log", Func: runtimeLog, Price: 1},
{Name: "AntShares.Runtime.Notify", Func: runtimeNotify, Price: 1},
{Name: "AntShares.Storage.Delete", Func: storageDelete, Price: 100},
{Name: "AntShares.Storage.Get", Func: storageGet, Price: 100},
{Name: "AntShares.Storage.GetContext", Func: storageGetContext, Price: 1},
{Name: "AntShares.Storage.Put", Func: storagePut, Price: 0},
{Name: "AntShares.Transaction.GetAttributes", Func: txGetAttributes, Price: 1},
{Name: "AntShares.Transaction.GetHash", Func: txGetHash, Price: 1},
}
// initIDinInteropsSlice initializes IDs from names in one given

8
pkg/core/interops_test.go
View file

@ -34,11 +34,6 @@ func TestUnexpectedNonInterops(t *testing.T) {
funcs := []func(*interop.Context, *vm.VM) error{
accountGetBalance,
accountGetScriptHash,
attrGetData,
attrGetUsage,
blockGetTransaction,
blockGetTransactionCount,
blockGetTransactions,
contractGetScript,
contractGetStorageContext,
contractIsPayable,
@ -55,9 +50,6 @@ func TestUnexpectedNonInterops(t *testing.T) {
storageGet,
storagePut,
storagePutEx,
txGetAttributes,
txGetHash,
txGetWitnesses,
witnessGetVerificationScript,
}
for _, f := range funcs {

65
pkg/interop/attribute/attribute.go
View file

@ -1,65 +0,0 @@
/*
Package attribute provides getters for transaction attributes.
*/
package attribute
// Attribute represents transaction attribute in Neo, it's an opaque data
// structure that you can get data from only using functions from this package.
// It's similar in function to the TransactionAttribute class in the Neo .net
// framework. To use it you need to get is first using transaction.GetAttributes.
type Attribute struct{}
// GetUsage returns the Usage field of the given attribute. It is an enumeration
// with the following possible values:
// ContractHash = 0x00
// ECDH02 = 0x02
// ECDH03 = 0x03
// Script = 0x20
// Vote = 0x30
// CertURL = 0x80
// DescriptionURL = 0x81
// Description = 0x90
//
// Hash1 = 0xa1
// Hash2 = 0xa2
// Hash3 = 0xa3
// Hash4 = 0xa4
// Hash5 = 0xa5
// Hash6 = 0xa6
// Hash7 = 0xa7
// Hash8 = 0xa8
// Hash9 = 0xa9
// Hash10 = 0xaa
// Hash11 = 0xab
// Hash12 = 0xac
// Hash13 = 0xad
// Hash14 = 0xae
// Hash15 = 0xaf
//
// Remark = 0xf0
// Remark1 = 0xf1
// Remark2 = 0xf2
// Remark3 = 0xf3
// Remark4 = 0xf4
// Remark5 = 0xf5
// Remark6 = 0xf6
// Remark7 = 0xf7
// Remark8 = 0xf8
// Remark9 = 0xf9
// Remark10 = 0xfa
// Remark11 = 0xfb
// Remark12 = 0xfc
// Remark13 = 0xfd
// Remark14 = 0xfe
// Remark15 = 0xff
// This function uses `Neo.Attribute.GetUsage` syscall internally.
func GetUsage(attr Attribute) byte {
return 0x00
}
// GetData returns the data of the given attribute, exact interpretation of this
// data depends on attribute's Usage type. It uses `Neo.Attribute.GetData`
// syscall internally.
func GetData(attr Attribute) []byte {
return nil
}

30
pkg/interop/block/block.go
View file

@ -1,30 +0,0 @@
/*
Package block provides getters for Neo Block structure.
*/
package block
import "github.com/nspcc-dev/neo-go/pkg/interop/transaction"
// Block represents a NEO block, it's an opaque data structure that you can get
// data from only using functions from this package. It's similar in function to
// the Block class in the Neo .net framework. To use it you need to get it via
// blockchain.GetBlock function call.
type Block struct{}
// GetTransactionCount returns the number of recorded transactions in the given
// block. It uses `Neo.Block.GetTransactionCount` syscall internally.
func GetTransactionCount(b Block) int {
return 0
}
// GetTransactions returns a slice of transactions recorded in the given block.
// It uses `Neo.Block.GetTransactions` syscall internally.
func GetTransactions(b Block) []transaction.Transaction {
return []transaction.Transaction{}
}
// GetTransaction returns transaction from the given block by its index. It
// uses `Neo.Block.GetTransaction` syscall internally.
func GetTransaction(b Block, index int) transaction.Transaction {
return transaction.Transaction{}
}

81
pkg/interop/blockchain/blockchain.go
View file

@ -5,12 +5,60 @@ package blockchain
import (
"github.com/nspcc-dev/neo-go/pkg/interop/account"
"github.com/nspcc-dev/neo-go/pkg/interop/block"
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/interop/header"
"github.com/nspcc-dev/neo-go/pkg/interop/transaction"
)
// Transaction represents a NEO transaction. It's similar to Transaction class
// in Neo .net framework.
type Transaction struct {
// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
// given transaction (which also is its ID).
Hash []byte
// Version represents the transaction version.
Version int
// Nonce is a random number to avoid hash collision.
Nonce int
// Sender represents the sender (160 bit BE value in a 20 byte slice) of the
// given Transaction.
Sender []byte
// SysFee represents fee to be burned.
SysFee int
// NetFee represents fee to be distributed to consensus nodes.
NetFee int
// ValidUntilBlock is the maximum blockchain height exceeding which
// transaction should fail verification.
ValidUntilBlock int
// Script represents code to run in NeoVM for this transaction.
Script []byte
}
// Block represents a NEO block, it's a data structure that you can get
// block-related data from. It's similar to the Block class in the Neo .net
// framework. To use it you need to get it via GetBlock function call.
type Block struct {
// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
// given block.
Hash []byte
// Version of the block.
Version int
// PrevHash represents the hash (256 bit BE value in a 32 byte slice) of the
// previous block.
PrevHash []byte
// MerkleRoot represents the root hash (256 bit BE value in a 32 byte slice)
// of a transaction list.
MerkleRoot []byte
// Timestamp represents millisecond-precision block timestamp.
Timestamp int
// Index represents the height of the block.
Index int
// NextConsensus representes contract address of the next miner (160 bit BE
// value in a 20 byte slice).
NextConsensus []byte
// TransactionsLength represents the length of block's transactions array.
TransactionsLength int
}
// GetHeight returns current block height (index of the last accepted block).
// Note that when transaction is being run as a part of new block this block is
// considered as not yet accepted (persisted) and thus you'll get an index of
@ -29,23 +77,30 @@ func GetHeader(heightOrHash interface{}) header.Header {
}
// GetBlock returns block found by the given hash or index (with the same
// encoding as for GetHeader). Refer to the `block` package for possible uses
// of returned structure. This function uses `Neo.Blockchain.GetBlock` syscall.
func GetBlock(heightOrHash interface{}) block.Block {
return block.Block{}
// encoding as for GetHeader). This function uses `System.Blockchain.GetBlock`
// syscall.
func GetBlock(heightOrHash interface{}) Block {
return Block{}
}
// GetTransaction returns transaction found by the given (256 bit in BE format
// represented as a slice of 32 bytes). Refer to the `transaction` package for
// possible uses of returned structure. This function uses
// `Neo.Blockchain.GetTransaction` syscall.
func GetTransaction(hash []byte) transaction.Transaction {
return transaction.Transaction{}
// GetTransaction returns transaction found by the given hash (256 bit in BE
// format represented as a slice of 32 bytes). This function uses
// `System.Blockchain.GetTransaction` syscall.
func GetTransaction(hash []byte) Transaction {
return Transaction{}
}
// GetTransactionFromBlock returns transaction hash (256 bit in BE format
// represented as a slice of 32 bytes) from the block found by the given hash or
// index (with the same encoding as for GetHeader) by its index. This
// function uses `System.Blockchain.GetTransactionFromBlock` syscall.
func GetTransactionFromBlock(heightOrHash interface{}, index int) []byte {
return nil
}
// GetTransactionHeight returns transaction's height (index of the block that
// includes it) by the given ID (256 bit in BE format represented as a slice of
// 32 bytes). This function uses `Neo.Blockchain.GetTransactionHeight` syscall.
// 32 bytes). This function uses `System.Blockchain.GetTransactionHeight` syscall.
func GetTransactionHeight(hash []byte) int {
return 0
}

11
pkg/interop/engine/engine.go
View file

@ -5,15 +5,14 @@ framework.
*/
package engine
import "github.com/nspcc-dev/neo-go/pkg/interop/transaction"
import "github.com/nspcc-dev/neo-go/pkg/interop/blockchain"
// GetScriptContainer returns the transaction that initially triggered current
// execution context. It never changes in a single execution, no matter how deep
// this execution goes. See `transaction` package for details on how to use the
// returned value. This function uses `System.ExecutionEngine.GetScriptContainer`
// syscall.
func GetScriptContainer() transaction.Transaction {
return transaction.Transaction{}
// this execution goes. This function uses
// `System.ExecutionEngine.GetScriptContainer` syscall.
func GetScriptContainer() blockchain.Transaction {
return blockchain.Transaction{}
}
// GetExecutingScriptHash returns script hash (160 bit in BE form represented

34
pkg/interop/transaction/transaction.go
View file

@ -1,34 +0,0 @@
/*
Package transaction provides functions to work with transactions.
*/
package transaction
import (
"github.com/nspcc-dev/neo-go/pkg/interop/attribute"
"github.com/nspcc-dev/neo-go/pkg/interop/witness"
)
// Transaction represents a NEO transaction, it's an opaque data structure
// that can be used with functions from this package. It's similar to
// Transaction class in Neo .net framework.
type Transaction struct{}
// GetHash returns the hash (256 bit BE value in a 32 byte slice) of the given
// transaction (which also is its ID). Is uses `Neo.Transaction.GetHash` syscall.
func GetHash(t Transaction) []byte {
return nil
}
// GetAttributes returns a slice of attributes for agiven transaction. Refer to
// attribute package on how to use them. This function uses
// `Neo.Transaction.GetAttributes` syscall.
func GetAttributes(t Transaction) []attribute.Attribute {
return []attribute.Attribute{}
}
// GetWitnesses returns a slice of witnesses of a given Transaction. Refer to
// witness package on how to use them. This function uses
// `Neo.Transaction.GetWitnesses` syscall.
func GetWitnesses(t Transaction) []witness.Witness {
return []witness.Witness{}
}