package core import ( "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/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}, 2*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.Features = smartcontract.HasStorage 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{}) { v := vm.New() v.LoadScriptWithFlags(script, smartcontract.AllowCall) for i := range args { v.Estack().PushVal(args[i]) } v.GasLimit = -1 ic.VM = v } 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 := cs.Manifest.MarshalJSON() 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 := expected.Manifest.MarshalJSON() require.NoError(t, err) require.Equal(t, 4, len(act)) require.Equal(t, expected.Script, act[0].Value().([]byte)) require.Equal(t, expectedManifest, act[1].Value().([]byte)) hasstorage, err := act[2].TryBool() require.NoError(t, err) ispayable, err := act[3].TryBool() require.NoError(t, err) require.Equal(t, expected.HasStorage(), hasstorage) require.Equal(t, expected.IsPayable(), ispayable) } 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 := manifest.MarshalJSON() require.NoError(t, err) putArgsOnStack(stackitem.Null{}, manifestBytes) require.Error(t, contractUpdate(ic)) }) t.Run("update manifest, old contract shouldn't have storage", func(t *testing.T) { cs.Manifest.Features |= smartcontract.HasStorage require.NoError(t, ic.DAO.PutContractState(cs)) require.NoError(t, ic.DAO.PutStorageItem(cs.ID, []byte("my_item"), &state.StorageItem{ Value: []byte{1, 2, 3}, IsConst: false, })) v.LoadScriptWithHash([]byte{byte(opcode.RET)}, cs.ScriptHash(), smartcontract.All) manifest := &manifest.Manifest{ ABI: manifest.ABI{ Hash: cs.ScriptHash(), }, } manifestBytes, err := manifest.MarshalJSON() require.NoError(t, err) putArgsOnStack(stackitem.Null{}, manifestBytes) require.Error(t, contractUpdate(ic)) }) t.Run("update manifest, positive", func(t *testing.T) { cs.Manifest.Features = smartcontract.NoProperties require.NoError(t, ic.DAO.PutContractState(cs)) manifest := &manifest.Manifest{ ABI: manifest.ABI{ Hash: cs.ScriptHash(), }, Features: smartcontract.HasStorage, } manifestBytes, err := manifest.MarshalJSON() 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), }, Features: smartcontract.HasStorage, } newManifestBytes, err := newManifest.MarshalJSON() 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 := cs.Manifest.MarshalJSON() 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) { v := vm.New() ic.VM = v v.Load(currCs.Script) v.Estack().PushVal("add") v.Estack().PushVal(rawHash) require.NoError(t, callback.CreateFromMethod(ic)) args := stackitem.NewArray([]stackitem.Item{stackitem.Make(1), stackitem.Make(5)}) v.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)) }) }) }