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core: remove Neo.Header/Witness/Account.* interops

Browse source 
They are not present in NEO3.
This commit is contained in:
Evgenii Stratonikov 2020-06-10 11:20:57 +03:00
parent 4264a758ac
commit 3d3fe9398e
10 changed files with 2 additions and 385 deletions
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22
pkg/compiler/syscall.go
View file

@ -1,12 +1,6 @@
package compiler
var syscalls = map[string]map[string]string{
"account": {
"GetBalance": "Neo.Account.GetBalance",
"GetScriptHash": "Neo.Account.GetScriptHash",
"GetVotes": "Neo.Account.GetVotes",
"IsStandard": "Neo.Account.IsStandard",
},
"crypto": {
"ECDsaVerify": "Neo.Crypto.ECDsaVerify",
},
@ -35,25 +29,12 @@ var syscalls = map[string]map[string]string{
"Deserialize": "Neo.Runtime.Deserialize",
},
"blockchain": {
"GetAccount": "Neo.Blockchain.GetAccount",
"GetBlock": "System.Blockchain.GetBlock",
"GetContract": "Neo.Blockchain.GetContract",
"GetHeader": "Neo.Blockchain.GetHeader",
"GetHeight": "Neo.Blockchain.GetHeight",
"GetTransaction": "System.Blockchain.GetTransaction",
"GetTransactionFromBlock": "System.Blockchain.GetTransactionFromBlock",
"GetTransactionHeight": "System.Blockchain.GetTransactionHeight",
"GetValidators": "Neo.Blockchain.GetValidators",
},
"header": {
"GetIndex": "Neo.Header.GetIndex",
"GetHash": "Neo.Header.GetHash",
"GetPrevHash": "Neo.Header.GetPrevHash",
"GetTimestamp": "Neo.Header.GetTimestamp",
"GetVersion": "Neo.Header.GetVersion",
"GetMerkleRoot": "Neo.Header.GetMerkleRoot",
"GetConsensusData": "Neo.Header.GetConsensusData",
"GetNextConsensus": "Neo.Header.GetNextConsensus",
},
"contract": {
"GetScript": "Neo.Contract.GetScript",
@ -78,7 +59,4 @@ var syscalls = map[string]map[string]string{
"Value": "Neo.Iterator.Value",
"Values": "Neo.Iterator.Values",
},
"witness": {
"GetVerificationScript": "Neo.Witness.GetVerificationScript",
},
}

105
pkg/core/interop_neo.go
View file

@ -8,10 +8,8 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
@ -27,109 +25,6 @@ const (
MaxContractStringLen = 252
)
// headerGetVersion returns version from the header.
func headerGetVersion(ic *interop.Context, v *vm.VM) error {
header, err := popHeaderFromVM(v)
if err != nil {
return err
}
v.Estack().PushVal(header.Version)
return nil
}
// headerGetMerkleRoot returns version from the header.
func headerGetMerkleRoot(ic *interop.Context, v *vm.VM) error {
header, err := popHeaderFromVM(v)
if err != nil {
return err
}
v.Estack().PushVal(header.MerkleRoot.BytesBE())
return nil
}
// headerGetNextConsensus returns version from the header.
func headerGetNextConsensus(ic *interop.Context, v *vm.VM) error {
header, err := popHeaderFromVM(v)
if err != nil {
return err
}
v.Estack().PushVal(header.NextConsensus.BytesBE())
return nil
}
// witnessGetVerificationScript returns current witness' script.
func witnessGetVerificationScript(ic *interop.Context, v *vm.VM) error {
witInterface := v.Estack().Pop().Value()
wit, ok := witInterface.(*transaction.Witness)
if !ok {
return errors.New("value is not a witness")
}
// It's important not to share wit.VerificationScript slice with the code running in VM.
script := make([]byte, len(wit.VerificationScript))
copy(script, wit.VerificationScript)
v.Estack().PushVal(script)
return nil
}
// bcGetAccount returns or creates an account.
func bcGetAccount(ic *interop.Context, v *vm.VM) error {
accbytes := v.Estack().Pop().Bytes()
acchash, err := util.Uint160DecodeBytesBE(accbytes)
if err != nil {
return err
}
acc, err := ic.DAO.GetAccountStateOrNew(acchash)
if err != nil {
return err
}
v.Estack().PushVal(stackitem.NewInterop(acc))
return nil
}
// accountGetBalance returns balance for a given account.
func accountGetBalance(ic *interop.Context, v *vm.VM) error {
accInterface := v.Estack().Pop().Value()
acc, ok := accInterface.(*state.Account)
if !ok {
return fmt.Errorf("%T is not an account state", acc)
}
asbytes := v.Estack().Pop().Bytes()
ashash, err := util.Uint256DecodeBytesBE(asbytes)
if err != nil {
return err
}
balance, ok := acc.GetBalanceValues()[ashash]
if !ok {
balance = util.Fixed8(0)
}
v.Estack().PushVal(int64(balance))
return nil
}
// accountGetScriptHash returns script hash of a given account.
func accountGetScriptHash(ic *interop.Context, v *vm.VM) error {
accInterface := v.Estack().Pop().Value()
acc, ok := accInterface.(*state.Account)
if !ok {
return fmt.Errorf("%T is not an account state", acc)
}
v.Estack().PushVal(acc.ScriptHash.BytesBE())
return nil
}
// accountIsStandard checks whether given account is standard.
func accountIsStandard(ic *interop.Context, v *vm.VM) error {
accbytes := v.Estack().Pop().Bytes()
acchash, err := util.Uint160DecodeBytesBE(accbytes)
if err != nil {
return err
}
contract, err := ic.DAO.GetContractState(acchash)
res := err != nil || vm.IsStandardContract(contract.Script)
v.Estack().PushVal(res)
return nil
}
// storageFind finds stored key-value pair.
func storageFind(ic *interop.Context, v *vm.VM) error {
stcInterface := v.Estack().Pop().Value()

70
pkg/core/interop_neo_test.go
View file

@ -2,7 +2,6 @@ package core
import (
"fmt"
"math/big"
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/block"
@ -136,64 +135,6 @@ func TestStorageFind(t *testing.T) {
})
}
func TestHeaderGetVersion(t *testing.T) {
v, block, context, chain := createVMAndPushBlock(t)
defer chain.Close()
err := headerGetVersion(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value().(*big.Int)
require.Equal(t, uint64(block.Version), value.Uint64())
}
func TestHeaderGetVersion_Negative(t *testing.T) {
v := vm.New()
block := newDumbBlock()
chain := newTestChain(t)
defer chain.Close()
context := chain.newInteropContext(trigger.Application, dao.NewSimple(storage.NewMemoryStore()), block, nil)
v.Estack().PushVal(stackitem.NewBool(false))
err := headerGetVersion(context, v)
require.Errorf(t, err, "value is not a header or block")
}
func TestHeaderGetMerkleRoot(t *testing.T) {
v, block, context, chain := createVMAndPushBlock(t)
defer chain.Close()
err := headerGetMerkleRoot(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value()
require.Equal(t, block.MerkleRoot.BytesBE(), value)
}
func TestHeaderGetNextConsensus(t *testing.T) {
v, block, context, chain := createVMAndPushBlock(t)
defer chain.Close()
err := headerGetNextConsensus(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value()
require.Equal(t, block.NextConsensus.BytesBE(), value)
}
func TestWitnessGetVerificationScript(t *testing.T) {
v := vm.New()
script := []byte{byte(opcode.PUSHM1), byte(opcode.RET)}
witness := transaction.Witness{InvocationScript: nil, VerificationScript: script}
chain := newTestChain(t)
defer chain.Close()
context := chain.newInteropContext(trigger.Application, dao.NewSimple(storage.NewMemoryStore()), nil, nil)
v.Estack().PushVal(stackitem.NewInterop(&witness))
err := witnessGetVerificationScript(context, v)
require.NoError(t, err)
value := v.Estack().Pop().Value().([]byte)
require.Equal(t, witness.VerificationScript, value)
}
func TestECDSAVerify(t *testing.T) {
priv, err := keys.NewPrivateKey()
require.NoError(t, err)
@ -270,17 +211,6 @@ func TestECDSAVerify(t *testing.T) {
})
}
func TestAccountGetScriptHash(t *testing.T) {
v, accState, context, chain := createVMAndAccState(t)
defer chain.Close()
v.Estack().PushVal(stackitem.NewInterop(accState))
err := accountGetScriptHash(context, v)
require.NoError(t, err)
hash := v.Estack().Pop().Value()
require.Equal(t, accState.ScriptHash.BytesBE(), hash)
}
func TestContractGetScript(t *testing.T) {
v, contractState, context, chain := createVMAndContractState(t)
defer chain.Close()

15
pkg/core/interop_system.go
View file

@ -98,21 +98,6 @@ func bcGetContract(ic *interop.Context, v *vm.VM) error {
return nil
}
// bcGetHeader returns block header.
func bcGetHeader(ic *interop.Context, v *vm.VM) error {
hash, err := getBlockHashFromElement(ic.Chain, v.Estack().Pop())
if err != nil {
return err
}
header, err := ic.Chain.GetHeader(hash)
if err != nil {
v.Estack().PushVal([]byte{})
} else {
v.Estack().PushVal(stackitem.NewInterop(header))
}
return nil
}
// bcGetHeight returns blockchain height.
func bcGetHeight(ic *interop.Context, v *vm.VM) error {
v.Estack().PushVal(ic.Chain.BlockHeight())

18
pkg/core/interops.go
View file

@ -64,7 +64,6 @@ func getInteropFromSlice(ic *interop.Context, slice []interop.Function) func(uin
var systemInterops = []interop.Function{
{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: 100},
{Name: "System.Blockchain.GetTransactionFromBlock", Func: bcGetTransactionFromBlock, Price: 100},
@ -77,10 +76,6 @@ var systemInterops = []interop.Function{
{Name: "System.ExecutionEngine.GetEntryScriptHash", Func: engineGetEntryScriptHash, Price: 1},
{Name: "System.ExecutionEngine.GetExecutingScriptHash", Func: engineGetExecutingScriptHash, Price: 1},
{Name: "System.ExecutionEngine.GetScriptContainer", Func: engineGetScriptContainer, Price: 1},
{Name: "System.Header.GetHash", Func: headerGetHash, Price: 1},
{Name: "System.Header.GetIndex", Func: headerGetIndex, Price: 1},
{Name: "System.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
{Name: "System.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
{Name: "System.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
{Name: "System.Runtime.Deserialize", Func: runtimeDeserialize, Price: 1},
{Name: "System.Runtime.GetTime", Func: runtimeGetTime, Price: 1},
@ -99,12 +94,7 @@ var systemInterops = []interop.Function{
}
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.Blockchain.GetAccount", Func: bcGetAccount, Price: 100},
{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.Contract.Create", Func: contractCreate, Price: 0},
{Name: "Neo.Contract.Destroy", Func: contractDestroy, Price: 1},
@ -119,13 +109,6 @@ var neoInterops = []interop.Function{
{Name: "Neo.Enumerator.Create", Func: enumerator.Create, Price: 1},
{Name: "Neo.Enumerator.Next", Func: enumerator.Next, Price: 1},
{Name: "Neo.Enumerator.Value", Func: enumerator.Value, Price: 1},
{Name: "Neo.Header.GetHash", Func: headerGetHash, Price: 1},
{Name: "Neo.Header.GetIndex", Func: headerGetIndex, Price: 1},
{Name: "Neo.Header.GetMerkleRoot", Func: headerGetMerkleRoot, Price: 1},
{Name: "Neo.Header.GetNextConsensus", Func: headerGetNextConsensus, Price: 1},
{Name: "Neo.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
{Name: "Neo.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
{Name: "Neo.Header.GetVersion", Func: headerGetVersion, Price: 1},
{Name: "Neo.Iterator.Concat", Func: iterator.Concat, Price: 1},
{Name: "Neo.Iterator.Create", Func: iterator.Create, Price: 1},
{Name: "Neo.Iterator.Key", Func: iterator.Key, Price: 1},
@ -146,7 +129,6 @@ 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.Witness.GetVerificationScript", Func: witnessGetVerificationScript, Price: 100},
// Aliases.
{Name: "Neo.Iterator.Next", Func: enumerator.Next, Price: 1},

10
pkg/core/interops_test.go
View file

@ -32,25 +32,15 @@ func TestUnexpectedNonInterops(t *testing.T) {
// All of these functions expect an interop item on the stack.
funcs := []func(*interop.Context, *vm.VM) error{
accountGetBalance,
accountGetScriptHash,
contractGetScript,
contractGetStorageContext,
contractIsPayable,
headerGetHash,
headerGetIndex,
headerGetMerkleRoot,
headerGetNextConsensus,
headerGetPrevHash,
headerGetTimestamp,
headerGetVersion,
storageContextAsReadOnly,
storageDelete,
storageFind,
storageGet,
storagePut,
storagePutEx,
witnessGetVerificationScript,
}
for _, f := range funcs {
for k, v := range vals {

43
pkg/interop/account/account.go
View file

@ -1,43 +0,0 @@
/*
Package account provides getter functions for Account interop structure.
To use these functions you need to get an Account first via blockchain.GetAccount
call.
*/
package account
// Account represents NEO account type that is used in interop functions, 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 Account class in the Neo .net
// framework.
type Account struct{}
// GetScriptHash returns the script hash of the given Account (20 bytes in BE
// representation). It uses `Neo.Account.GetBalance` syscall internally.
func GetScriptHash(a Account) []byte {
return nil
}
// GetVotes returns current votes of the given account represented as a slice of
// public keys. Keys are serialized into byte slices in their compressed form (33
// bytes long each). This function uses `Neo.Account.GetVotes` syscall
// internally.
func GetVotes(a Account) [][]byte {
return nil
}
// GetBalance returns current balance of the given asset (by its ID, 256 bit
// hash in BE form) for the given account. Only native UTXO assets can be
// queiried via this function, for NEP-5 ones use respective contract calls.
// The value returned is represented as an integer with original value multiplied
// by 10⁸ so you can work with fractional parts of the balance too. This function
// uses `Neo.Account.GetBalance` syscall internally.
func GetBalance(a Account, assetID []byte) int {
return 0
}
// IsStandard checks whether given account uses standard (CHECKSIG or
// CHECKMULTISIG) contract. It only works for deployed contracts and uses
// `Neo.Account.IsStandard` syscall internally.
func IsStandard(a Account) bool {
return false
}

29
pkg/interop/blockchain/blockchain.go
View file

@ -4,9 +4,7 @@ Package blockchain provides functions to access various blockchain data.
package blockchain
import (
"github.com/nspcc-dev/neo-go/pkg/interop/account"
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/interop/header"
)
// Transaction represents a NEO transaction. It's similar to Transaction class
@ -63,19 +61,11 @@ type Block struct {
// 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
// the previous (already accepted) block. This function uses
// `Neo.Blockchain.GetHeight` syscall.
// `System.Blockchain.GetHeight` syscall.
func GetHeight() int {
return 0
}
// GetHeader returns header found by the given hash (256 bit hash in BE format
// represented as a slice of 32 bytes) or index (integer). Refer to the `header`
// package for possible uses of returned structure. This function uses
// `Neo.Blockchain.GetHeader` syscall.
func GetHeader(heightOrHash interface{}) header.Header {
return header.Header{}
}
// GetBlock returns block found by the given hash or index (with the same
// encoding as for GetHeader). This function uses `System.Blockchain.GetBlock`
// syscall.
@ -108,22 +98,7 @@ func GetTransactionHeight(hash []byte) int {
// GetContract returns contract found by the given script hash (160 bit in BE
// format represented as a slice of 20 bytes). Refer to the `contract` package
// for details on how to use the returned structure. This function uses
// `Neo.Blockchain.GetContract` syscall.
// `System.Blockchain.GetContract` syscall.
func GetContract(scriptHash []byte) contract.Contract {
return contract.Contract{}
}
// GetAccount returns account found by the given script hash (160 bit in BE
// format represented as a slice of 20 bytes). Refer to the `account` package
// for details on how to use the returned structure. This function uses
// `Neo.Blockchain.GetAccount` syscall.
func GetAccount(scriptHash []byte) account.Account {
return account.Account{}
}
// GetValidators returns a slice of current validators public keys represented
// as a compressed serialized byte slice (33 bytes long). This function uses
// `Neo.Blockchain.GetValidators` syscall.
func GetValidators() [][]byte {
return nil
}

61
pkg/interop/header/header.go
View file

@ -1,61 +0,0 @@
/*
Package header contains functions working with block headers.
*/
package header
// Header represents Neo block header type, it's an opaque data structure that
// can be used by functions from this package. You can create it with
// blockchain.GetHeader. In its function it's similar to the Header class
// of the Neo .net framework.
type Header struct{}
// GetIndex returns the index (height) of the given header. It uses
// `Neo.Header.GetIndex` syscall.
func GetIndex(h Header) int {
return 0
}
// GetHash returns the hash (256-bit BE value packed into 32 byte slice) of the
// given header (which also is a hash of the block). It uses `Neo.Header.GetHash`
// syscall.
func GetHash(h Header) []byte {
return nil
}
// GetPrevHash returns the hash (256-bit BE value packed into 32 byte slice) of
// the previous block stored in the given header. It uses `Neo.Header.GetPrevHash`
// syscall.
func GetPrevHash(h Header) []byte {
return nil
}
// GetTimestamp returns the timestamp of the given header. It uses
// `Neo.Header.GetTimestamp` syscall.
func GetTimestamp(h Header) int {
return 0
}
// GetVersion returns the version of the given header. It uses
// `Neo.Header.GetVersion` syscall.
func GetVersion(h Header) int {
return 0
}
// GetMerkleRoot returns the Merkle root (256-bit BE value packed into 32 byte
// slice) of the given header. It uses `Neo.Header.GetMerkleRoot` syscall.
func GetMerkleRoot(h Header) []byte {
return nil
}
// GetConsensusData returns the consensus data (nonce) of the given header.
// It uses `Neo.Header.GetConsensusData` syscall.
func GetConsensusData(h Header) int {
return 0
}
// GetNextConsensus returns the next consensus field (verification script hash,
// 160-bit BE value packed into 20 byte slice) of the given header. It uses
// `Neo.Header.GetNextConsensus` syscall.
func GetNextConsensus(h Header) []byte {
return nil
}

14
pkg/interop/witness/witness.go
View file

@ -1,14 +0,0 @@
/*
Package witness provides functions dealing with transaction's witnesses.
*/
package witness
// Witness is an opaque data structure that can only be created by
// transaction.GetWitnesses and representing transaction's witness.
type Witness struct{}
// GetVerificationScript returns verification script stored in the given
// witness. It uses `Neo.Witness.GetVerificationScript` syscall.
func GetVerificationScript(w Witness) []byte {
return nil
}