package compiler_test import ( "bytes" "errors" "fmt" "math/big" "strings" "testing" "github.com/nspcc-dev/neo-go/pkg/compiler" "github.com/nspcc-dev/neo-go/pkg/core" "github.com/nspcc-dev/neo-go/pkg/core/interop" "github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames" istorage "github.com/nspcc-dev/neo-go/pkg/core/interop/storage" "github.com/nspcc-dev/neo-go/pkg/interop/contract" "github.com/nspcc-dev/neo-go/pkg/interop/storage" "github.com/nspcc-dev/neo-go/pkg/smartcontract" "github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag" "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" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) // Checks that changes in `smartcontract` are reflected in compiler interop package. func TestCallFlags(t *testing.T) { require.EqualValues(t, contract.ReadStates, callflag.ReadStates) require.EqualValues(t, contract.WriteStates, callflag.WriteStates) require.EqualValues(t, contract.AllowCall, callflag.AllowCall) require.EqualValues(t, contract.AllowNotify, callflag.AllowNotify) require.EqualValues(t, contract.States, callflag.States) require.EqualValues(t, contract.ReadOnly, callflag.ReadOnly) require.EqualValues(t, contract.All, callflag.All) require.EqualValues(t, contract.NoneFlag, callflag.NoneFlag) } func TestFindFlags(t *testing.T) { require.EqualValues(t, storage.None, istorage.FindDefault) require.EqualValues(t, storage.KeysOnly, istorage.FindKeysOnly) require.EqualValues(t, storage.RemovePrefix, istorage.FindRemovePrefix) require.EqualValues(t, storage.ValuesOnly, istorage.FindValuesOnly) require.EqualValues(t, storage.DeserializeValues, istorage.FindDeserialize) require.EqualValues(t, storage.PickField0, istorage.FindPick0) require.EqualValues(t, storage.PickField1, istorage.FindPick1) } type syscallTestCase struct { method string params []string isVoid bool } // This test ensures that our wrappers have the necessary number of parameters // and execute the appropriate syscall. Because of lack of typing (compared to native contracts), // parameter types can't be checked. func TestSyscallExecution(t *testing.T) { b := `[]byte{1}` u160 := `interop.Hash160("aaaaaaaaaaaaaaaaaaaa")` pub := `interop.PublicKey("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")` pubs := "[]interop.PublicKey{ " + pub + "}" sig := `interop.Signature("aaaaaa")` sigs := "[]interop.Signature{" + sig + "}" sctx := "storage.Context{}" interops := map[string]syscallTestCase{ "contract.Call": {interopnames.SystemContractCall, []string{u160, `"m"`, "1", "3"}, false}, "contract.CreateMultisigAccount": {interopnames.SystemContractCreateMultisigAccount, []string{"1", pubs}, false}, "contract.CreateStandardAccount": {interopnames.SystemContractCreateStandardAccount, []string{pub}, false}, "contract.GetCallFlags": {interopnames.SystemContractGetCallFlags, nil, false}, "iterator.Next": {interopnames.SystemIteratorNext, []string{"iterator.Iterator{}"}, false}, "iterator.Value": {interopnames.SystemIteratorValue, []string{"iterator.Iterator{}"}, false}, "runtime.BurnGas": {interopnames.SystemRuntimeBurnGas, []string{"1"}, true}, "runtime.CheckWitness": {interopnames.SystemRuntimeCheckWitness, []string{b}, false}, "runtime.GasLeft": {interopnames.SystemRuntimeGasLeft, nil, false}, "runtime.GetAddressVersion": {interopnames.SystemRuntimeGetAddressVersion, nil, false}, "runtime.GetCallingScriptHash": {interopnames.SystemRuntimeGetCallingScriptHash, nil, false}, "runtime.GetEntryScriptHash": {interopnames.SystemRuntimeGetEntryScriptHash, nil, false}, "runtime.GetExecutingScriptHash": {interopnames.SystemRuntimeGetExecutingScriptHash, nil, false}, "runtime.GetInvocationCounter": {interopnames.SystemRuntimeGetInvocationCounter, nil, false}, "runtime.GetNetwork": {interopnames.SystemRuntimeGetNetwork, nil, false}, "runtime.GetNotifications": {interopnames.SystemRuntimeGetNotifications, []string{u160}, false}, "runtime.GetRandom": {interopnames.SystemRuntimeGetRandom, nil, false}, "runtime.GetScriptContainer": {interopnames.SystemRuntimeGetScriptContainer, nil, false}, "runtime.GetTime": {interopnames.SystemRuntimeGetTime, nil, false}, "runtime.GetTrigger": {interopnames.SystemRuntimeGetTrigger, nil, false}, "runtime.LoadScript": {interopnames.SystemRuntimeLoadScript, []string{b, "0", b}, false}, "runtime.Log": {interopnames.SystemRuntimeLog, []string{`"msg"`}, true}, "runtime.Notify": {interopnames.SystemRuntimeNotify, []string{`"ev"`, "1"}, true}, "runtime.Platform": {interopnames.SystemRuntimePlatform, nil, false}, "storage.Delete": {interopnames.SystemStorageDelete, []string{sctx, b}, true}, "storage.Find": {interopnames.SystemStorageFind, []string{sctx, b, "storage.None"}, false}, "storage.Get": {interopnames.SystemStorageGet, []string{sctx, b}, false}, "storage.GetContext": {interopnames.SystemStorageGetContext, nil, false}, "storage.GetReadOnlyContext": {interopnames.SystemStorageGetReadOnlyContext, nil, false}, "storage.Put": {interopnames.SystemStoragePut, []string{sctx, b, b}, true}, "storage.ConvertContextToReadOnly": {interopnames.SystemStorageAsReadOnly, []string{sctx}, false}, "crypto.CheckMultisig": {interopnames.SystemCryptoCheckMultisig, []string{pubs, sigs}, false}, "crypto.CheckSig": {interopnames.SystemCryptoCheckSig, []string{pub, sig}, false}, } ic := &interop.Context{} core.SpawnVM(ic) // set Functions field for _, fs := range ic.Functions { // It will be set in test and we want to fail if calling invalid syscall. fs.Func = nil } srcBuilder := bytes.NewBuffer(nil) srcBuilder.WriteString(`package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" import "github.com/nspcc-dev/neo-go/pkg/interop/runtime" import "github.com/nspcc-dev/neo-go/pkg/interop/storage" import "github.com/nspcc-dev/neo-go/pkg/interop/iterator" import "github.com/nspcc-dev/neo-go/pkg/interop/crypto" import "github.com/nspcc-dev/neo-go/pkg/interop" func unused() { var _ interop.Hash160 } `) for goName, tc := range interops { realName := strings.ToTitle(strings.Replace(goName, ".", "", 1)) var tmpl string if tc.isVoid { tmpl = "func %s() { %s(%s) }\n" } else { tmpl = "func %s() interface{} { return %s(%s) }\n" } srcBuilder.WriteString(fmt.Sprintf(tmpl, realName, goName, strings.Join(tc.params, ", "))) } nf, di, err := compiler.CompileWithOptions("foo.go", srcBuilder, nil) require.NoError(t, err) for goName, tc := range interops { t.Run(goName, func(t *testing.T) { name := strings.ToTitle(strings.Replace(goName, ".", "", 1)) runSyscallTestCase(t, ic, name, nf.Script, di, tc) }) } } func runSyscallTestCase(t *testing.T, ic *interop.Context, realName string, script []byte, debugInfo *compiler.DebugInfo, tc syscallTestCase) { syscallID := interopnames.ToID([]byte(tc.method)) f := ic.GetFunction(syscallID) require.NotNil(t, f) require.Equal(t, f.ParamCount, len(tc.params)) called := false f.Func = func(ic *interop.Context) error { called = true if ic.VM.Estack().Len() < f.ParamCount { return errors.New("not enough parameters") } for i := 0; i < f.ParamCount; i++ { ic.VM.Estack().Pop() } if !tc.isVoid { ic.VM.Estack().PushVal(42) } return nil } defer func() { f.Func = nil }() invokeMethod(t, realName, script, ic.VM, debugInfo) require.NoError(t, ic.VM.Run()) require.True(t, called) if tc.isVoid { require.Equal(t, 0, ic.VM.Estack().Len()) } else { require.Equal(t, 1, ic.VM.Estack().Len()) require.Equal(t, big.NewInt(42), ic.VM.Estack().Pop().Value()) } } func TestStoragePutGet(t *testing.T) { src := ` package foo import "github.com/nspcc-dev/neo-go/pkg/interop/storage" func Main() string { ctx := storage.GetContext() key := []byte("token") storage.Put(ctx, key, []byte("foo")) x := storage.Get(ctx, key) return x.(string) } ` eval(t, src, []byte("foo")) } func TestNotify(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/runtime" func Main(arg int) { runtime.Notify("Event1", arg, "sum", arg+1) runtime.Notify("single") }` v, s, _ := vmAndCompileInterop(t, src) v.Estack().PushVal(11) require.NoError(t, v.Run()) require.Equal(t, 2, len(s.events)) exp0 := []stackitem.Item{stackitem.NewBigInteger(big.NewInt(11)), stackitem.NewByteArray([]byte("sum")), stackitem.NewBigInteger(big.NewInt(12))} assert.Equal(t, "Event1", s.events[0].Name) assert.Equal(t, exp0, s.events[0].Item.Value()) assert.Equal(t, "single", s.events[1].Name) assert.Equal(t, []stackitem.Item{}, s.events[1].Item.Value()) t.Run("long event name", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/runtime" func Main(arg int) { runtime.Notify("long event12345678901234567890123") }` _, _, err := compiler.CompileWithOptions("foo.go", strings.NewReader(src), nil) require.Error(t, err) }) } func TestSyscallInGlobalInit(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/runtime" var a = runtime.CheckWitness([]byte("5T")) func Main() bool { return a }` v, s, _ := vmAndCompileInterop(t, src) s.interops[interopnames.ToID([]byte(interopnames.SystemRuntimeCheckWitness))] = func(v *vm.VM) error { s := v.Estack().Pop().Value().([]byte) require.Equal(t, "5T", string(s)) v.Estack().PushVal(true) return nil } require.NoError(t, v.Run()) require.Equal(t, true, v.Estack().Pop().Value()) } func TestOpcode(t *testing.T) { t.Run("1 argument", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func abs(a int) int { return neogointernal.Opcode1("ABS", a).(int) } func Main() int { return abs(-42) }` eval(t, src, big.NewInt(42)) }) t.Run("2 arguments", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func add3(a, b, c int) int { return neogointernal.Opcode2("SUB", a, neogointernal.Opcode2("SUB", b, c).(int)).(int) } func Main() int { return add3(53, 12, 1) }` eval(t, src, big.NewInt(42)) }) t.Run("POW", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() int { return math.Pow(2, math.Pow(3, 2)) }` eval(t, src, big.NewInt(512)) }) t.Run("SRQT", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() int { return math.Sqrt(math.Sqrt(101)) // == sqrt(10) == 3 }` eval(t, src, big.NewInt(3)) }) t.Run("SIGN", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() []int { signs := make([]int, 3) signs[0] = math.Sign(-123) signs[1] = math.Sign(0) signs[2] = math.Sign(42) return signs }` eval(t, src, []stackitem.Item{ stackitem.Make(-1), stackitem.Make(0), stackitem.Make(1), }) }) t.Run("ABS", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() int { return math.Abs(-3) }` eval(t, src, big.NewInt(3)) }) t.Run("MAX", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() int { return math.Max(1, 2) + math.Max(8, 3) }` eval(t, src, big.NewInt(10)) }) t.Run("MIN", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() int { return math.Min(1, 2) + math.Min(8, 3) }` eval(t, src, big.NewInt(4)) }) t.Run("WITHIN", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() []bool { r := make([]bool, 5) r[0] = math.Within(2, 3, 5) r[1] = math.Within(3, 3, 5) r[2] = math.Within(4, 3, 5) r[3] = math.Within(5, 3, 5) r[4] = math.Within(6, 3, 5) return r }` eval(t, src, []stackitem.Item{ stackitem.Make(false), stackitem.Make(true), stackitem.Make(true), stackitem.Make(false), stackitem.Make(false), }) }) t.Run("MODMUL", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() []int { r := make([]int, 5) r[0] = math.ModMul(3, 4, 5) r[1] = math.ModMul(-3, 4, 5) r[2] = math.ModMul(3, 4, -5) r[3] = math.ModMul(-3, 4, -5) r[4] = math.ModMul(0, 4, 5) return r }` eval(t, src, []stackitem.Item{ stackitem.Make(2), stackitem.Make(3), stackitem.Make(2), stackitem.Make(3), stackitem.Make(0), }) }) t.Run("MODPOW", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/math" func Main() []int { r := make([]int, 5) r[0] = math.ModPow(3, 4, 5) r[1] = math.ModPow(-3, 5, 5) r[2] = math.ModPow(3, 4, -5) r[3] = math.ModPow(-3, 5, -5) r[4] = math.ModPow(19, -1, 141) return r }` eval(t, src, []stackitem.Item{ stackitem.Make(1), stackitem.Make(2), stackitem.Make(1), stackitem.Make(2), stackitem.Make(52), }) }) } func TestInteropTypesComparison(t *testing.T) { typeCheck := func(t *testing.T, typeName string, typeLen int) { t.Run(typeName, func(t *testing.T) { var ha, hb string for i := 0; i < typeLen; i++ { if i == typeLen-1 { ha += "2" hb += "3" } else { ha += "1, " hb += "1, " } } check := func(t *testing.T, a, b string, expected bool) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + a + `} b := interop.` + typeName + `{` + b + `} return a.Equals(b) }` eval(t, src, expected) } t.Run("same type", func(t *testing.T) { check(t, ha, ha, true) check(t, ha, hb, false) }) t.Run("a is nil", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { var a interop.` + typeName + ` b := interop.` + typeName + `{` + hb + `} return a.Equals(b) }` eval(t, src, false) }) t.Run("b is nil", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + ha + `} var b interop.` + typeName + ` return a.Equals(b) }` eval(t, src, false) }) t.Run("both nil", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { var a interop.` + typeName + ` var b interop.` + typeName + ` return a.Equals(b) }` eval(t, src, true) }) t.Run("different types", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + ha + `} b := 123 return a.Equals(b) }` eval(t, src, false) }) t.Run("b is Buffer", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + ha + `} b := []byte{` + ha + `} return a.Equals(b) }` eval(t, src, true) }) t.Run("b is ByteString", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + ha + `} b := string([]byte{` + ha + `}) return a.Equals(b) }` eval(t, src, true) }) t.Run("b is compound type", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" func Main() bool { a := interop.` + typeName + `{` + ha + `} b := struct{}{} return a.Equals(b) }` vm, _, _ := vmAndCompileInterop(t, src) err := vm.Run() require.Error(t, err) require.True(t, strings.Contains(err.Error(), "invalid conversion: Struct/ByteString"), err) }) }) } typeCheck(t, "Hash160", util.Uint160Size) typeCheck(t, "Hash256", util.Uint256Size) typeCheck(t, "Signature", smartcontract.SignatureLen) typeCheck(t, "PublicKey", smartcontract.PublicKeyLen) }