neo-go/pkg/core/interop_system_test.go
2020-11-13 21:46:26 +03:00

1264 lines
40 KiB
Go

package core
import (
"encoding/json"
"errors"
"math/big"
"testing"
"github.com/nspcc-dev/dbft/crypto"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/interop/callback"
"github.com/nspcc-dev/neo-go/pkg/core/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
"github.com/nspcc-dev/neo-go/pkg/core/interop/runtime"
"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/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/internal/random"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"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, nil))
v.Estack().PushVal(tx.Hash().BytesBE())
err := bcGetTransaction(context)
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, nil))
v.Estack().PushVal(tx.Hash().BytesBE())
err := bcGetTransaction(context)
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, nil))
v.Estack().PushVal(tx.Hash().BytesLE())
err := bcGetTransaction(context)
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, nil))
t.Run("success", func(t *testing.T) {
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context)
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)
require.Error(t, err)
})
t.Run("isn't traceable", func(t *testing.T) {
block.Index = 2
require.NoError(t, context.DAO.StoreAsBlock(block, nil))
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context)
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, nil))
v.Estack().PushVal(0)
v.Estack().PushVal(block.Hash().BytesLE())
err := bcGetTransactionFromBlock(context)
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, nil))
v.Estack().PushVal(1)
v.Estack().PushVal(block.Hash().BytesBE())
err := bcGetTransactionFromBlock(context)
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)
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)
require.NoError(t, err)
_, ok := v.Estack().Pop().Item().(stackitem.Null)
require.True(t, ok)
})
}
func TestContractIsStandard(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
t.Run("contract not stored", func(t *testing.T) {
priv, err := keys.NewPrivateKey()
require.NoError(t, err)
pub := priv.PublicKey()
tx := transaction.New(netmode.TestNet, []byte{1, 2, 3}, 1)
tx.Scripts = []transaction.Witness{
{
InvocationScript: []byte{1, 2, 3},
VerificationScript: pub.GetVerificationScript(),
},
}
ic.Container = tx
t.Run("true", func(t *testing.T) {
v.Estack().PushVal(pub.GetScriptHash().BytesBE())
require.NoError(t, contractIsStandard(ic))
require.True(t, v.Estack().Pop().Bool())
})
t.Run("false", func(t *testing.T) {
tx.Scripts[0].VerificationScript = []byte{9, 8, 7}
v.Estack().PushVal(pub.GetScriptHash().BytesBE())
require.NoError(t, contractIsStandard(ic))
require.False(t, v.Estack().Pop().Bool())
})
})
t.Run("contract stored, true", func(t *testing.T) {
priv, err := keys.NewPrivateKey()
require.NoError(t, err)
pub := priv.PublicKey()
err = ic.DAO.PutContractState(&state.Contract{ID: 42, Script: pub.GetVerificationScript()})
require.NoError(t, err)
v.Estack().PushVal(pub.GetScriptHash().BytesBE())
require.NoError(t, contractIsStandard(ic))
require.True(t, v.Estack().Pop().Bool())
})
t.Run("contract stored, false", func(t *testing.T) {
script := []byte{byte(opcode.PUSHT)}
require.NoError(t, ic.DAO.PutContractState(&state.Contract{ID: 24, Script: script}))
v.Estack().PushVal(crypto.Hash160(script).BytesBE())
require.NoError(t, contractIsStandard(ic))
require.False(t, v.Estack().Pop().Bool())
})
}
func TestContractCreateAccount(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
t.Run("Good", func(t *testing.T) {
priv, err := keys.NewPrivateKey()
require.NoError(t, err)
pub := priv.PublicKey()
v.Estack().PushVal(pub.Bytes())
require.NoError(t, contractCreateStandardAccount(ic))
value := v.Estack().Pop().Bytes()
u, err := util.Uint160DecodeBytesBE(value)
require.NoError(t, err)
require.Equal(t, pub.GetScriptHash(), u)
})
t.Run("InvalidKey", func(t *testing.T) {
v.Estack().PushVal([]byte{1, 2, 3})
require.Error(t, contractCreateStandardAccount(ic))
})
}
func TestRuntimeGasLeft(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
v.GasLimit = 100
v.AddGas(58)
require.NoError(t, runtime.GasLeft(ic))
require.EqualValues(t, 42, v.Estack().Pop().BigInt().Int64())
}
func TestRuntimeGetNotifications(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
ic.Notifications = []state.NotificationEvent{
{ScriptHash: util.Uint160{1}, Name: "Event1", Item: stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte{11})})},
{ScriptHash: util.Uint160{2}, Name: "Event2", Item: stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte{22})})},
{ScriptHash: util.Uint160{1}, Name: "Event1", Item: stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte{33})})},
}
t.Run("NoFilter", func(t *testing.T) {
v.Estack().PushVal(stackitem.Null{})
require.NoError(t, runtime.GetNotifications(ic))
arr := v.Estack().Pop().Array()
require.Equal(t, len(ic.Notifications), len(arr))
for i := range arr {
elem := arr[i].Value().([]stackitem.Item)
require.Equal(t, ic.Notifications[i].ScriptHash.BytesBE(), elem[0].Value())
name, err := stackitem.ToString(elem[1])
require.NoError(t, err)
require.Equal(t, ic.Notifications[i].Name, name)
require.Equal(t, ic.Notifications[i].Item, elem[2])
}
})
t.Run("WithFilter", func(t *testing.T) {
h := util.Uint160{2}.BytesBE()
v.Estack().PushVal(h)
require.NoError(t, runtime.GetNotifications(ic))
arr := v.Estack().Pop().Array()
require.Equal(t, 1, len(arr))
elem := arr[0].Value().([]stackitem.Item)
require.Equal(t, h, elem[0].Value())
name, err := stackitem.ToString(elem[1])
require.NoError(t, err)
require.Equal(t, ic.Notifications[1].Name, name)
require.Equal(t, ic.Notifications[1].Item, elem[2])
})
}
func TestRuntimeGetInvocationCounter(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
ic.VM.Invocations[hash.Hash160([]byte{2})] = 42
t.Run("No invocations", func(t *testing.T) {
v.LoadScript([]byte{1})
// do not return an error in this case.
require.NoError(t, runtime.GetInvocationCounter(ic))
require.EqualValues(t, 1, v.Estack().Pop().BigInt().Int64())
})
t.Run("NonZero", func(t *testing.T) {
v.LoadScript([]byte{2})
require.NoError(t, runtime.GetInvocationCounter(ic))
require.EqualValues(t, 42, v.Estack().Pop().BigInt().Int64())
})
}
func TestBlockchainGetContractState(t *testing.T) {
v, cs, ic, bc := createVMAndContractState(t)
defer bc.Close()
require.NoError(t, ic.DAO.PutContractState(cs))
t.Run("positive", func(t *testing.T) {
v.Estack().PushVal(cs.ScriptHash().BytesBE())
require.NoError(t, bcGetContract(ic))
actual := v.Estack().Pop().Item()
compareContractStates(t, cs, actual)
})
t.Run("uncknown contract state", func(t *testing.T) {
v.Estack().PushVal(util.Uint160{1, 2, 3}.BytesBE())
require.NoError(t, bcGetContract(ic))
actual := v.Estack().Pop().Item()
require.Equal(t, stackitem.Null{}, actual)
})
}
func TestStoragePut(t *testing.T) {
_, cs, ic, bc := createVMAndContractState(t)
defer bc.Close()
require.NoError(t, ic.DAO.PutContractState(cs))
initVM := func(t *testing.T, key, value []byte, gas int64) {
v := ic.SpawnVM()
v.LoadScript(cs.Script)
v.GasLimit = gas
v.Estack().PushVal(value)
v.Estack().PushVal(key)
require.NoError(t, storageGetContext(ic))
}
t.Run("create, not enough gas", func(t *testing.T) {
initVM(t, []byte{1}, []byte{2, 3}, 2*StoragePrice)
err := storagePut(ic)
require.True(t, errors.Is(err, errGasLimitExceeded), "got: %v", err)
})
initVM(t, []byte{4}, []byte{5, 6}, 3*StoragePrice)
require.NoError(t, storagePut(ic))
t.Run("update", func(t *testing.T) {
t.Run("not enough gas", func(t *testing.T) {
initVM(t, []byte{4}, []byte{5, 6, 7, 8}, StoragePrice)
err := storagePut(ic)
require.True(t, errors.Is(err, errGasLimitExceeded), "got: %v", err)
})
initVM(t, []byte{4}, []byte{5, 6, 7, 8}, 3*StoragePrice)
require.NoError(t, storagePut(ic))
initVM(t, []byte{4}, []byte{5, 6}, StoragePrice)
require.NoError(t, storagePut(ic))
})
}
// getTestContractState returns 2 contracts second of which is allowed to call the first.
func getTestContractState() (*state.Contract, *state.Contract) {
w := io.NewBufBinWriter()
emit.Opcodes(w.BinWriter, opcode.ABORT)
addOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.ADD, opcode.RET)
ret7Off := w.Len()
emit.Opcodes(w.BinWriter, opcode.PUSH7, opcode.RET)
dropOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.DROP, opcode.RET)
initOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.INITSSLOT, 1, opcode.PUSH3, opcode.STSFLD0, opcode.RET)
add3Off := w.Len()
emit.Opcodes(w.BinWriter, opcode.LDSFLD0, opcode.ADD, opcode.RET)
invalidRetOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.PUSH1, opcode.PUSH2, opcode.RET)
justRetOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.RET)
verifyOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.LDSFLD0, opcode.SUB,
opcode.CONVERT, opcode.Opcode(stackitem.BooleanT), opcode.RET)
deployOff := w.Len()
emit.Opcodes(w.BinWriter, opcode.JMPIF, 2+8+3)
emit.String(w.BinWriter, "create")
emit.Opcodes(w.BinWriter, opcode.CALL, 3+8+3, opcode.RET)
emit.String(w.BinWriter, "update")
emit.Opcodes(w.BinWriter, opcode.CALL, 3, opcode.RET)
putValOff := w.Len()
emit.String(w.BinWriter, "initial")
emit.Syscall(w.BinWriter, interopnames.SystemStorageGetContext)
emit.Syscall(w.BinWriter, interopnames.SystemStoragePut)
emit.Opcodes(w.BinWriter, opcode.RET)
getValOff := w.Len()
emit.String(w.BinWriter, "initial")
emit.Syscall(w.BinWriter, interopnames.SystemStorageGetContext)
emit.Syscall(w.BinWriter, interopnames.SystemStorageGet)
script := w.Bytes()
h := hash.Hash160(script)
m := manifest.NewManifest(h)
m.ABI.Methods = []manifest.Method{
{
Name: "add",
Offset: addOff,
Parameters: []manifest.Parameter{
manifest.NewParameter("addend1", smartcontract.IntegerType),
manifest.NewParameter("addend2", smartcontract.IntegerType),
},
ReturnType: smartcontract.IntegerType,
},
{
Name: "ret7",
Offset: ret7Off,
Parameters: []manifest.Parameter{},
ReturnType: smartcontract.IntegerType,
},
{
Name: "drop",
Offset: dropOff,
ReturnType: smartcontract.VoidType,
},
{
Name: manifest.MethodInit,
Offset: initOff,
ReturnType: smartcontract.VoidType,
},
{
Name: "add3",
Offset: add3Off,
Parameters: []manifest.Parameter{
manifest.NewParameter("addend", smartcontract.IntegerType),
},
ReturnType: smartcontract.IntegerType,
},
{
Name: "invalidReturn",
Offset: invalidRetOff,
ReturnType: smartcontract.IntegerType,
},
{
Name: "justReturn",
Offset: justRetOff,
ReturnType: smartcontract.IntegerType,
},
{
Name: manifest.MethodVerify,
Offset: verifyOff,
ReturnType: smartcontract.BoolType,
},
{
Name: manifest.MethodDeploy,
Offset: deployOff,
Parameters: []manifest.Parameter{
manifest.NewParameter("isUpdate", smartcontract.BoolType),
},
ReturnType: smartcontract.VoidType,
},
{
Name: "getValue",
Offset: getValOff,
ReturnType: smartcontract.StringType,
},
{
Name: "putValue",
Offset: putValOff,
Parameters: []manifest.Parameter{
manifest.NewParameter("value", smartcontract.StringType),
},
ReturnType: smartcontract.VoidType,
},
}
cs := &state.Contract{
Script: script,
Manifest: *m,
ID: 42,
}
currScript := []byte{byte(opcode.RET)}
m = manifest.NewManifest(hash.Hash160(currScript))
perm := manifest.NewPermission(manifest.PermissionHash, h)
perm.Methods.Add("add")
perm.Methods.Add("drop")
perm.Methods.Add("add3")
perm.Methods.Add("invalidReturn")
perm.Methods.Add("justReturn")
perm.Methods.Add("getValue")
m.Permissions = append(m.Permissions, *perm)
return cs, &state.Contract{
Script: currScript,
Manifest: *m,
ID: 123,
}
}
func loadScript(ic *interop.Context, script []byte, args ...interface{}) {
ic.SpawnVM()
ic.VM.LoadScriptWithFlags(script, smartcontract.AllowCall)
for i := range args {
ic.VM.Estack().PushVal(args[i])
}
ic.VM.GasLimit = -1
}
func loadScriptWithHashAndFlags(ic *interop.Context, script []byte, hash util.Uint160, f smartcontract.CallFlag, args ...interface{}) {
ic.SpawnVM()
ic.VM.LoadScriptWithHash(script, hash, f)
for i := range args {
ic.VM.Estack().PushVal(args[i])
}
ic.VM.GasLimit = -1
}
func TestContractCall(t *testing.T) {
_, ic, bc := createVM(t)
defer bc.Close()
cs, currCs := getTestContractState()
require.NoError(t, ic.DAO.PutContractState(cs))
require.NoError(t, ic.DAO.PutContractState(currCs))
currScript := currCs.Script
h := cs.Manifest.ABI.Hash
addArgs := stackitem.NewArray([]stackitem.Item{stackitem.Make(1), stackitem.Make(2)})
t.Run("Good", func(t *testing.T) {
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(addArgs)
ic.VM.Estack().PushVal("add")
ic.VM.Estack().PushVal(h.BytesBE())
require.NoError(t, contract.Call(ic))
require.NoError(t, ic.VM.Run())
require.Equal(t, 2, ic.VM.Estack().Len())
require.Equal(t, big.NewInt(3), ic.VM.Estack().Pop().Value())
require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Value())
})
t.Run("CallExInvalidFlag", func(t *testing.T) {
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(byte(0xFF))
ic.VM.Estack().PushVal(addArgs)
ic.VM.Estack().PushVal("add")
ic.VM.Estack().PushVal(h.BytesBE())
require.Error(t, contract.CallEx(ic))
})
runInvalid := func(args ...interface{}) func(t *testing.T) {
return func(t *testing.T) {
loadScript(ic, currScript, 42)
for i := range args {
ic.VM.Estack().PushVal(args[i])
}
// interops can both return error and panic,
// we don't care which kind of error has occurred
require.Panics(t, func() {
err := contract.Call(ic)
if err != nil {
panic(err)
}
})
}
}
t.Run("Invalid", func(t *testing.T) {
t.Run("Hash", runInvalid(addArgs, "add", h.BytesBE()[1:]))
t.Run("MissingHash", runInvalid(addArgs, "add", util.Uint160{}.BytesBE()))
t.Run("Method", runInvalid(addArgs, stackitem.NewInterop("add"), h.BytesBE()))
t.Run("MissingMethod", runInvalid(addArgs, "sub", h.BytesBE()))
t.Run("DisallowedMethod", runInvalid(stackitem.NewArray(nil), "ret7", h.BytesBE()))
t.Run("Arguments", runInvalid(1, "add", h.BytesBE()))
t.Run("NotEnoughArguments", runInvalid(
stackitem.NewArray([]stackitem.Item{stackitem.Make(1)}), "add", h.BytesBE()))
})
t.Run("ReturnValues", func(t *testing.T) {
t.Run("Many", func(t *testing.T) {
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(stackitem.NewArray(nil))
ic.VM.Estack().PushVal("invalidReturn")
ic.VM.Estack().PushVal(h.BytesBE())
require.NoError(t, contract.Call(ic))
require.Error(t, ic.VM.Run())
})
t.Run("Void", func(t *testing.T) {
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(stackitem.NewArray(nil))
ic.VM.Estack().PushVal("justReturn")
ic.VM.Estack().PushVal(h.BytesBE())
require.NoError(t, contract.Call(ic))
require.NoError(t, ic.VM.Run())
require.Equal(t, 2, ic.VM.Estack().Len())
require.Equal(t, stackitem.Null{}, ic.VM.Estack().Pop().Item())
require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Value())
})
})
t.Run("IsolatedStack", func(t *testing.T) {
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(stackitem.NewArray(nil))
ic.VM.Estack().PushVal("drop")
ic.VM.Estack().PushVal(h.BytesBE())
require.NoError(t, contract.Call(ic))
require.Error(t, ic.VM.Run())
})
t.Run("CallInitialize", func(t *testing.T) {
t.Run("Directly", runInvalid(stackitem.NewArray([]stackitem.Item{}), "_initialize", h.BytesBE()))
loadScript(ic, currScript, 42)
ic.VM.Estack().PushVal(stackitem.NewArray([]stackitem.Item{stackitem.Make(5)}))
ic.VM.Estack().PushVal("add3")
ic.VM.Estack().PushVal(h.BytesBE())
require.NoError(t, contract.Call(ic))
require.NoError(t, ic.VM.Run())
require.Equal(t, 2, ic.VM.Estack().Len())
require.Equal(t, big.NewInt(8), ic.VM.Estack().Pop().Value())
require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Value())
})
}
func TestContractCreate(t *testing.T) {
v, cs, ic, bc := createVMAndContractState(t)
v.GasLimit = -1
defer bc.Close()
putArgsOnStack := func() {
manifest, err := json.Marshal(cs.Manifest)
require.NoError(t, err)
v.Estack().PushVal(manifest)
v.Estack().PushVal(cs.Script)
}
t.Run("positive", func(t *testing.T) {
putArgsOnStack()
require.NoError(t, contractCreate(ic))
actual := v.Estack().Pop().Item()
compareContractStates(t, cs, actual)
})
t.Run("invalid scripthash", func(t *testing.T) {
cs.Script = append(cs.Script, 0x01)
putArgsOnStack()
require.Error(t, contractCreate(ic))
})
t.Run("contract already exists", func(t *testing.T) {
cs.Script = cs.Script[:len(cs.Script)-1]
require.NoError(t, ic.DAO.PutContractState(cs))
putArgsOnStack()
require.Error(t, contractCreate(ic))
})
}
func compareContractStates(t *testing.T, expected *state.Contract, actual stackitem.Item) {
act, ok := actual.Value().([]stackitem.Item)
require.True(t, ok)
expectedManifest, err := json.Marshal(expected.Manifest)
require.NoError(t, err)
require.Equal(t, 2, len(act))
require.Equal(t, expected.Script, act[0].Value().([]byte))
require.Equal(t, expectedManifest, act[1].Value().([]byte))
}
func TestContractUpdate(t *testing.T) {
v, cs, ic, bc := createVMAndContractState(t)
defer bc.Close()
v.GasLimit = -1
putArgsOnStack := func(script, manifest interface{}) {
v.Estack().PushVal(manifest)
v.Estack().PushVal(script)
}
t.Run("no args", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(stackitem.Null{}, stackitem.Null{})
require.Error(t, contractUpdate(ic))
})
t.Run("no contract", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, util.Uint160{8, 9, 7}, smartcontract.All)
require.Error(t, contractUpdate(ic))
})
t.Run("too large script", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(make([]byte, MaxContractScriptSize+1), stackitem.Null{})
require.Error(t, contractUpdate(ic))
})
t.Run("too large manifest", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(stackitem.Null{}, make([]byte, manifest.MaxManifestSize+1))
require.Error(t, contractUpdate(ic))
})
t.Run("gas limit exceeded", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.GasLimit = 0
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack([]byte{1}, []byte{2})
require.Error(t, contractUpdate(ic))
})
t.Run("update script, the same script", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.GasLimit = -1
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(cs.Script, stackitem.Null{})
require.Error(t, contractUpdate(ic))
})
t.Run("update script, already exists", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
duplicateScript := []byte{byte(opcode.PUSHDATA4)}
require.NoError(t, ic.DAO.PutContractState(&state.Contract{
ID: 95,
Script: duplicateScript,
Manifest: manifest.Manifest{
ABI: manifest.ABI{
Hash: hash.Hash160(duplicateScript),
},
},
}))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(duplicateScript, stackitem.Null{})
require.Error(t, contractUpdate(ic))
})
t.Run("update script, positive", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
t.Run("empty manifest", func(t *testing.T) {
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
newScript := []byte{9, 8, 7, 6, 5}
putArgsOnStack(newScript, []byte{})
require.Error(t, contractUpdate(ic))
})
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
newScript := []byte{9, 8, 7, 6, 5}
putArgsOnStack(newScript, stackitem.Null{})
require.NoError(t, contractUpdate(ic))
// updated contract should have new scripthash
actual, err := ic.DAO.GetContractState(hash.Hash160(newScript))
require.NoError(t, err)
expected := &state.Contract{
ID: cs.ID,
Script: newScript,
Manifest: cs.Manifest,
}
expected.Manifest.ABI.Hash = hash.Hash160(newScript)
_ = expected.ScriptHash()
require.Equal(t, expected, actual)
// old contract should be deleted
_, err = ic.DAO.GetContractState(cs.ScriptHash())
require.Error(t, err)
})
t.Run("update manifest, bad manifest", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(stackitem.Null{}, []byte{1, 2, 3})
require.Error(t, contractUpdate(ic))
})
t.Run("update manifest, bad contract hash", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
manifest := &manifest.Manifest{
ABI: manifest.ABI{
Hash: util.Uint160{4, 5, 6},
},
}
manifestBytes, err := json.Marshal(manifest)
require.NoError(t, err)
putArgsOnStack(stackitem.Null{}, manifestBytes)
require.Error(t, contractUpdate(ic))
})
t.Run("update manifest, positive", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
manifest := &manifest.Manifest{
ABI: manifest.ABI{
Hash: cs.ScriptHash(),
},
}
manifestBytes, err := json.Marshal(manifest)
require.NoError(t, err)
t.Run("empty script", func(t *testing.T) {
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack([]byte{}, manifestBytes)
require.Error(t, contractUpdate(ic))
})
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
putArgsOnStack(stackitem.Null{}, manifestBytes)
require.NoError(t, contractUpdate(ic))
// updated contract should have new scripthash
actual, err := ic.DAO.GetContractState(cs.ScriptHash())
require.NoError(t, err)
expected := &state.Contract{
ID: cs.ID,
Script: cs.Script,
Manifest: *manifest,
}
_ = expected.ScriptHash()
require.Equal(t, expected, actual)
})
t.Run("update both script and manifest", func(t *testing.T) {
require.NoError(t, ic.DAO.PutContractState(cs))
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All)
newScript := []byte{12, 13, 14}
newManifest := manifest.Manifest{
ABI: manifest.ABI{
Hash: hash.Hash160(newScript),
},
}
newManifestBytes, err := json.Marshal(newManifest)
require.NoError(t, err)
putArgsOnStack(newScript, newManifestBytes)
require.NoError(t, contractUpdate(ic))
// updated contract should have new script and manifest
actual, err := ic.DAO.GetContractState(hash.Hash160(newScript))
require.NoError(t, err)
expected := &state.Contract{
ID: cs.ID,
Script: newScript,
Manifest: newManifest,
}
expected.Manifest.ABI.Hash = hash.Hash160(newScript)
_ = expected.ScriptHash()
require.Equal(t, expected, actual)
// old contract should be deleted
_, err = ic.DAO.GetContractState(cs.ScriptHash())
require.Error(t, err)
})
}
// TestContractCreateDeploy checks that `_deploy` method was called
// during contract creation or update.
func TestContractCreateDeploy(t *testing.T) {
v, ic, bc := createVM(t)
defer bc.Close()
v.GasLimit = -1
putArgs := func(cs *state.Contract) {
rawManifest, err := json.Marshal(cs.Manifest)
require.NoError(t, err)
v.Estack().PushVal(rawManifest)
v.Estack().PushVal(cs.Script)
}
cs, currCs := getTestContractState()
v.LoadScriptWithFlags([]byte{byte(opcode.RET)}, smartcontract.All)
putArgs(cs)
require.NoError(t, contractCreate(ic))
require.NoError(t, ic.VM.Run())
v.LoadScriptWithFlags(currCs.Script, smartcontract.All)
err := contract.CallExInternal(ic, cs, "getValue", nil, smartcontract.All, vm.EnsureNotEmpty)
require.NoError(t, err)
require.NoError(t, v.Run())
require.Equal(t, "create", v.Estack().Pop().String())
v.LoadScriptWithFlags(cs.Script, smartcontract.All)
md := cs.Manifest.ABI.GetMethod("justReturn")
v.Jump(v.Context(), md.Offset)
t.Run("Update", func(t *testing.T) {
newCs := &state.Contract{
ID: cs.ID,
Script: append(cs.Script, byte(opcode.RET)),
Manifest: cs.Manifest,
}
newCs.Manifest.ABI.Hash = hash.Hash160(newCs.Script)
putArgs(newCs)
require.NoError(t, contractUpdate(ic))
require.NoError(t, v.Run())
v.LoadScriptWithFlags(currCs.Script, smartcontract.All)
err = contract.CallExInternal(ic, newCs, "getValue", nil, smartcontract.All, vm.EnsureNotEmpty)
require.NoError(t, err)
require.NoError(t, v.Run())
require.Equal(t, "update", v.Estack().Pop().String())
})
}
func TestContractGetCallFlags(t *testing.T) {
v, ic, bc := createVM(t)
defer bc.Close()
v.LoadScriptWithHash([]byte{byte(opcode.RET)}, util.Uint160{1, 2, 3}, smartcontract.All)
require.NoError(t, contractGetCallFlags(ic))
require.Equal(t, int64(smartcontract.All), v.Estack().Pop().Value().(*big.Int).Int64())
}
func TestPointerCallback(t *testing.T) {
_, ic, bc := createVM(t)
defer bc.Close()
script := []byte{
byte(opcode.NOP), byte(opcode.INC), byte(opcode.RET),
byte(opcode.DIV), byte(opcode.RET),
}
t.Run("Good", func(t *testing.T) {
loadScript(ic, script, 2, stackitem.NewPointer(3, script))
ic.VM.Estack().PushVal(ic.VM.Context())
require.NoError(t, callback.Create(ic))
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(3), stackitem.Make(12)})
ic.VM.Estack().InsertAt(vm.NewElement(args), 1)
require.NoError(t, callback.Invoke(ic))
require.NoError(t, ic.VM.Run())
require.Equal(t, 1, ic.VM.Estack().Len())
require.Equal(t, big.NewInt(5), ic.VM.Estack().Pop().Item().Value())
})
t.Run("Invalid", func(t *testing.T) {
t.Run("NotEnoughParameters", func(t *testing.T) {
loadScript(ic, script, 2, stackitem.NewPointer(3, script))
ic.VM.Estack().PushVal(ic.VM.Context())
require.NoError(t, callback.Create(ic))
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(3)})
ic.VM.Estack().InsertAt(vm.NewElement(args), 1)
require.Error(t, callback.Invoke(ic))
})
})
}
func TestMethodCallback(t *testing.T) {
_, ic, bc := createVM(t)
defer bc.Close()
cs, currCs := getTestContractState()
require.NoError(t, ic.DAO.PutContractState(cs))
require.NoError(t, ic.DAO.PutContractState(currCs))
ic.Functions = append(ic.Functions, systemInterops)
rawHash := cs.Manifest.ABI.Hash.BytesBE()
t.Run("Invalid", func(t *testing.T) {
runInvalid := func(args ...interface{}) func(t *testing.T) {
return func(t *testing.T) {
loadScript(ic, currCs.Script, 42)
for i := range args {
ic.VM.Estack().PushVal(args[i])
}
require.Error(t, callback.CreateFromMethod(ic))
}
}
t.Run("Hash", runInvalid("add", rawHash[1:]))
t.Run("MissingHash", runInvalid("add", util.Uint160{}.BytesBE()))
t.Run("MissingMethod", runInvalid("sub", rawHash))
t.Run("DisallowedMethod", runInvalid("ret7", rawHash))
t.Run("Initialize", runInvalid("_initialize", rawHash))
t.Run("NotEnoughArguments", func(t *testing.T) {
loadScript(ic, currCs.Script, 42, "add", rawHash)
require.NoError(t, callback.CreateFromMethod(ic))
ic.VM.Estack().InsertAt(vm.NewElement(stackitem.NewArray([]stackitem.Item{stackitem.Make(1)})), 1)
require.Error(t, callback.Invoke(ic))
})
t.Run("CallIsNotAllowed", func(t *testing.T) {
ic.SpawnVM()
ic.VM.Load(currCs.Script)
ic.VM.Estack().PushVal("add")
ic.VM.Estack().PushVal(rawHash)
require.NoError(t, callback.CreateFromMethod(ic))
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(1), stackitem.Make(5)})
ic.VM.Estack().InsertAt(vm.NewElement(args), 1)
require.Error(t, callback.Invoke(ic))
})
})
t.Run("Good", func(t *testing.T) {
loadScript(ic, currCs.Script, 42, "add", rawHash)
require.NoError(t, callback.CreateFromMethod(ic))
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(1), stackitem.Make(5)})
ic.VM.Estack().InsertAt(vm.NewElement(args), 1)
require.NoError(t, callback.Invoke(ic))
require.NoError(t, ic.VM.Run())
require.Equal(t, 2, ic.VM.Estack().Len())
require.Equal(t, big.NewInt(6), ic.VM.Estack().Pop().Item().Value())
require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Item().Value())
})
}
func TestSyscallCallback(t *testing.T) {
_, ic, bc := createVM(t)
defer bc.Close()
ic.Functions = append(ic.Functions, []interop.Function{
{
ID: 0x42,
Func: func(ic *interop.Context) error {
a := ic.VM.Estack().Pop().BigInt()
b := ic.VM.Estack().Pop().BigInt()
ic.VM.Estack().PushVal(new(big.Int).Add(a, b))
return nil
},
ParamCount: 2,
},
{
ID: 0x53,
Func: func(_ *interop.Context) error { return nil },
DisallowCallback: true,
},
})
t.Run("Good", func(t *testing.T) {
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(12), stackitem.Make(30)})
loadScript(ic, []byte{byte(opcode.RET)}, args, 0x42)
require.NoError(t, callback.CreateFromSyscall(ic))
require.NoError(t, callback.Invoke(ic))
require.Equal(t, 1, ic.VM.Estack().Len())
require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Item().Value())
})
t.Run("Invalid", func(t *testing.T) {
t.Run("InvalidParameterCount", func(t *testing.T) {
args := stackitem.NewArray([]stackitem.Item{stackitem.Make(12)})
loadScript(ic, []byte{byte(opcode.RET)}, args, 0x42)
require.NoError(t, callback.CreateFromSyscall(ic))
require.Error(t, callback.Invoke(ic))
})
t.Run("MissingSyscall", func(t *testing.T) {
loadScript(ic, []byte{byte(opcode.RET)}, stackitem.NewArray(nil), 0x43)
require.Error(t, callback.CreateFromSyscall(ic))
})
t.Run("Disallowed", func(t *testing.T) {
loadScript(ic, []byte{byte(opcode.RET)}, stackitem.NewArray(nil), 0x53)
require.Error(t, callback.CreateFromSyscall(ic))
})
})
}
func TestRuntimeCheckWitness(t *testing.T) {
_, ic, bc := createVM(t)
defer bc.Close()
script := []byte{byte(opcode.RET)}
scriptHash := hash.Hash160(script)
check := func(t *testing.T, ic *interop.Context, arg interface{}, shouldFail bool, expected ...bool) {
ic.VM.Estack().PushVal(arg)
err := runtime.CheckWitness(ic)
if shouldFail {
require.Error(t, err)
} else {
require.NoError(t, err)
require.NotNil(t, expected)
actual, ok := ic.VM.Estack().Pop().Value().(bool)
require.True(t, ok)
require.Equal(t, expected[0], actual)
}
}
t.Run("error", func(t *testing.T) {
t.Run("not a hash or key", func(t *testing.T) {
check(t, ic, []byte{1, 2, 3}, true)
})
t.Run("script container is not a transaction", func(t *testing.T) {
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
check(t, ic, random.Uint160().BytesBE(), true)
})
t.Run("check scope", func(t *testing.T) {
t.Run("CustomGroups, missing AllowStates flag", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.CustomGroups,
AllowedGroups: []*keys.PublicKey{},
},
},
}
ic.Container = tx
callingScriptHash := scriptHash
loadScriptWithHashAndFlags(ic, script, callingScriptHash, smartcontract.All)
ic.VM.LoadScriptWithHash([]byte{0x1}, random.Uint160(), smartcontract.AllowCall)
check(t, ic, hash.BytesBE(), true)
})
t.Run("CustomGroups, unknown contract", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.CustomGroups,
AllowedGroups: []*keys.PublicKey{},
},
},
}
ic.Container = tx
callingScriptHash := scriptHash
loadScriptWithHashAndFlags(ic, script, callingScriptHash, smartcontract.All)
ic.VM.LoadScriptWithHash([]byte{0x1}, random.Uint160(), smartcontract.AllowStates)
check(t, ic, hash.BytesBE(), true)
})
})
})
t.Run("positive", func(t *testing.T) {
t.Run("calling scripthash", func(t *testing.T) {
t.Run("hashed witness", func(t *testing.T) {
callingScriptHash := scriptHash
loadScriptWithHashAndFlags(ic, script, callingScriptHash, smartcontract.All)
ic.VM.LoadScriptWithHash([]byte{0x1}, random.Uint160(), smartcontract.All)
check(t, ic, callingScriptHash.BytesBE(), false, true)
})
t.Run("keyed witness", func(t *testing.T) {
pk, err := keys.NewPrivateKey()
require.NoError(t, err)
callingScriptHash := pk.PublicKey().GetScriptHash()
loadScriptWithHashAndFlags(ic, script, callingScriptHash, smartcontract.All)
ic.VM.LoadScriptWithHash([]byte{0x1}, random.Uint160(), smartcontract.All)
check(t, ic, pk.PublicKey().Bytes(), false, true)
})
})
t.Run("check scope", func(t *testing.T) {
t.Run("Global", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.Global,
},
},
}
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
ic.Container = tx
check(t, ic, hash.BytesBE(), false, true)
})
t.Run("CalledByEntry", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.CalledByEntry,
},
},
}
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
ic.Container = tx
check(t, ic, hash.BytesBE(), false, true)
})
t.Run("CustomContracts", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.CustomContracts,
AllowedContracts: []util.Uint160{scriptHash},
},
},
}
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
ic.Container = tx
check(t, ic, hash.BytesBE(), false, true)
})
t.Run("CustomGroups", func(t *testing.T) {
t.Run("empty calling scripthash", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.CustomGroups,
AllowedGroups: []*keys.PublicKey{},
},
},
}
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
ic.Container = tx
check(t, ic, hash.BytesBE(), false, false)
})
t.Run("positive", func(t *testing.T) {
targetHash := random.Uint160()
pk, err := keys.NewPrivateKey()
require.NoError(t, err)
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: targetHash,
Scopes: transaction.CustomGroups,
AllowedGroups: []*keys.PublicKey{pk.PublicKey()},
},
},
}
contractScript := []byte{byte(opcode.PUSH1), byte(opcode.RET)}
contractScriptHash := hash.Hash160(contractScript)
contractState := &state.Contract{
ID: 15,
Script: contractScript,
Manifest: manifest.Manifest{
Groups: []manifest.Group{{PublicKey: pk.PublicKey()}},
},
}
require.NoError(t, ic.DAO.PutContractState(contractState))
loadScriptWithHashAndFlags(ic, contractScript, contractScriptHash, smartcontract.All)
ic.VM.LoadScriptWithHash([]byte{0x1}, random.Uint160(), smartcontract.AllowStates)
ic.Container = tx
check(t, ic, targetHash.BytesBE(), false, true)
})
})
t.Run("bad scope", func(t *testing.T) {
hash := random.Uint160()
tx := &transaction.Transaction{
Signers: []transaction.Signer{
{
Account: hash,
Scopes: transaction.None,
},
},
}
loadScriptWithHashAndFlags(ic, script, scriptHash, smartcontract.AllowStates)
ic.Container = tx
check(t, ic, hash.BytesBE(), false, false)
})
})
})
}