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Merge pull request #690 from nspcc-dev/feature/getapplicationlog

Browse source 
rpc: implement getapplicationlog RPC
This commit is contained in:
Roman Khimov 2020-03-02 17:41:32 +03:00 committed by GitHub
commit 252a9f2f31
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 1661 additions and 1027 deletions
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8
cli/smartcontract/smart_contract.go
View file

@ -296,10 +296,10 @@ func initSmartContract(ctx *cli.Context) error {
// TODO: Fix the missing neo-go.yml file with the `init` command when the package manager is in place.
if !ctx.Bool("skip-details") {
details := parseContractDetails()
details.ReturnType = request.ByteArray
details.Parameters = make([]request.StackParamType, 2)
details.Parameters[0] = request.String
details.Parameters[1] = request.Array
details.ReturnType = smartcontract.ByteArrayType
details.Parameters = make([]smartcontract.ParamType, 2)
details.Parameters[0] = smartcontract.StringType
details.Parameters[1] = smartcontract.ArrayType
project := &ProjectConfig{Contract: details}
b, err := yaml.Marshal(project)

2
docs/rpc.md
View file

@ -36,7 +36,7 @@ which would yield the response:
| Method | Implemented |
| ------- | ------------|
| `getaccountstate` | Yes |
| `getapplicationlog` | No (#500) |
| `getapplicationlog` | Yes |
| `getassetstate` | Yes |
| `getbestblockhash` | Yes |
| `getblock` | Yes |

8
pkg/core/blockchain.go
View file

@ -880,6 +880,12 @@ func (bc *Blockchain) GetTransaction(hash util.Uint256) (*transaction.Transactio
return bc.dao.GetTransaction(hash)
}
// GetAppExecResult returns application execution result by the given
// tx hash.
func (bc *Blockchain) GetAppExecResult(hash util.Uint256) (*state.AppExecResult, error) {
return bc.dao.GetAppExecResult(hash)
}
// GetStorageItem returns an item from storage.
func (bc *Blockchain) GetStorageItem(scripthash util.Uint160, key []byte) *state.StorageItem {
return bc.dao.GetStorageItem(scripthash, key)
@ -1717,6 +1723,6 @@ func (bc *Blockchain) secondsPerBlock() int {
return bc.config.SecondsPerBlock
}
func (bc *Blockchain) newInteropContext(trigger byte, s storage.Store, block *block.Block, tx *transaction.Transaction) *interopContext {
func (bc *Blockchain) newInteropContext(trigger trigger.Type, s storage.Store, block *block.Block, tx *transaction.Transaction) *interopContext {
return newInteropContext(trigger, bc, s, block, tx, bc.log)
}

1
pkg/core/blockchainer.go
View file

@ -32,6 +32,7 @@ type Blockchainer interface {
HasTransaction(util.Uint256) bool
GetAssetState(util.Uint256) *state.Asset
GetAccountState(util.Uint160) *state.Account
GetAppExecResult(util.Uint256) (*state.AppExecResult, error)
GetValidators(txes ...*transaction.Transaction) ([]*keys.PublicKey, error)
GetScriptHashesForVerifying(*transaction.Transaction) ([]util.Uint160, error)
GetStorageItem(scripthash util.Uint160, key []byte) *state.StorageItem

5
pkg/core/interops.go
View file

@ -14,13 +14,14 @@ import (
"github.com/CityOfZion/neo-go/pkg/core/state"
"github.com/CityOfZion/neo-go/pkg/core/storage"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
"github.com/CityOfZion/neo-go/pkg/vm"
"go.uber.org/zap"
)
type interopContext struct {
bc Blockchainer
trigger byte
trigger trigger.Type
block *block.Block
tx *transaction.Transaction
dao *cachedDao
@ -28,7 +29,7 @@ type interopContext struct {
log *zap.Logger
}
func newInteropContext(trigger byte, bc Blockchainer, s storage.Store, block *block.Block, tx *transaction.Transaction, log *zap.Logger) *interopContext {
func newInteropContext(trigger trigger.Type, bc Blockchainer, s storage.Store, block *block.Block, tx *transaction.Transaction, log *zap.Logger) *interopContext {
dao := newCachedDao(s)
nes := make([]state.NotificationEvent, 0)
return &interopContext{bc, trigger, block, tx, dao, nes, log}

7
pkg/core/state/notification_event.go
View file

@ -2,6 +2,7 @@ package state
import (
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/CityOfZion/neo-go/pkg/vm"
)
@ -17,7 +18,7 @@ type NotificationEvent struct {
// all resulting notifications, state, stack and other metadata.
type AppExecResult struct {
TxHash util.Uint256
Trigger byte
Trigger trigger.Type
VMState string
GasConsumed util.Fixed8
Stack string // JSON
@ -39,7 +40,7 @@ func (ne *NotificationEvent) DecodeBinary(r *io.BinReader) {
// EncodeBinary implements the Serializable interface.
func (aer *AppExecResult) EncodeBinary(w *io.BinWriter) {
w.WriteBytes(aer.TxHash[:])
w.WriteB(aer.Trigger)
w.WriteB(byte(aer.Trigger))
w.WriteString(aer.VMState)
aer.GasConsumed.EncodeBinary(w)
w.WriteString(aer.Stack)
@ -49,7 +50,7 @@ func (aer *AppExecResult) EncodeBinary(w *io.BinWriter) {
// DecodeBinary implements the Serializable interface.
func (aer *AppExecResult) DecodeBinary(r *io.BinReader) {
r.ReadBytes(aer.TxHash[:])
aer.Trigger = r.ReadB()
aer.Trigger = trigger.Type(r.ReadB())
aer.VMState = r.ReadString()
aer.GasConsumed.DecodeBinary(r)
aer.Stack = r.ReadString()

3
pkg/network/helper_test.go
View file

@ -67,6 +67,9 @@ func (chain *testChain) Close() {
func (chain testChain) HeaderHeight() uint32 {
return 0
}
func (chain testChain) GetAppExecResult(hash util.Uint256) (*state.AppExecResult, error) {
panic("TODO")
}
func (chain testChain) GetBlock(hash util.Uint256) (*block.Block, error) {
panic("TODO")
}

5
pkg/rpc/request/param.go
View file

@ -7,6 +7,7 @@ import (
"fmt"
"github.com/CityOfZion/neo-go/pkg/encoding/address"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/pkg/errors"
)
@ -24,8 +25,8 @@ type (
// FuncParam represents a function argument parameter used in the
// invokefunction RPC method.
FuncParam struct {
Type StackParamType `json:"type"`
Value Param `json:"value"`
Type smartcontract.ParamType `json:"type"`
Value Param `json:"value"`
}
)

5
pkg/rpc/request/param_test.go
View file

@ -6,6 +6,7 @@ import (
"testing"
"github.com/CityOfZion/neo-go/pkg/encoding/address"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
@ -41,7 +42,7 @@ func TestParam_UnmarshalJSON(t *testing.T) {
{
Type: FuncParamT,
Value: FuncParam{
Type: String,
Type: smartcontract.StringType,
Value: Param{
Type: StringT,
Value: "jajaja",
@ -146,7 +147,7 @@ func TestParamGetUint160FromAddress(t *testing.T) {
func TestParamGetFuncParam(t *testing.T) {
fp := FuncParam{
Type: String,
Type: smartcontract.StringType,
Value: Param{
Type: StringT,
Value: "jajaja",

6
pkg/rpc/request/scdetails.go
View file

@ -1,5 +1,7 @@
package request
import "github.com/CityOfZion/neo-go/pkg/smartcontract"
// ContractDetails contains contract metadata.
type ContractDetails struct {
Author string
@ -10,6 +12,6 @@ type ContractDetails struct {
HasStorage bool
HasDynamicInvocation bool
IsPayable bool
ReturnType StackParamType
Parameters []StackParamType
ReturnType smartcontract.ParamType
Parameters []smartcontract.ParamType
}

291
pkg/rpc/request/stack_param.go
View file

@ -1,291 +0,0 @@
package request
import (
"encoding/binary"
"encoding/hex"
"encoding/json"
"strconv"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/pkg/errors"
)
// StackParamType represents different types of stack values.
type StackParamType int
// All possible StackParamType values are listed here.
const (
Unknown StackParamType = -1
Signature StackParamType = 0x00
Boolean StackParamType = 0x01
Integer StackParamType = 0x02
Hash160 StackParamType = 0x03
Hash256 StackParamType = 0x04
ByteArray StackParamType = 0x05
PublicKey StackParamType = 0x06
String StackParamType = 0x07
Array StackParamType = 0x10
InteropInterface StackParamType = 0xf0
Void StackParamType = 0xff
)
// String implements the stringer interface.
func (t StackParamType) String() string {
switch t {
case Signature:
return "Signature"
case Boolean:
return "Boolean"
case Integer:
return "Integer"
case Hash160:
return "Hash160"
case Hash256:
return "Hash256"
case ByteArray:
return "ByteArray"
case PublicKey:
return "PublicKey"
case String:
return "String"
case Array:
return "Array"
case InteropInterface:
return "InteropInterface"
case Void:
return "Void"
default:
return "Unknown"
}
}
// StackParamTypeFromString converts string into the StackParamType.
func StackParamTypeFromString(s string) (StackParamType, error) {
switch s {
case "Signature":
return Signature, nil
case "Boolean":
return Boolean, nil
case "Integer":
return Integer, nil
case "Hash160":
return Hash160, nil
case "Hash256":
return Hash256, nil
case "ByteArray":
return ByteArray, nil
case "PublicKey":
return PublicKey, nil
case "String":
return String, nil
case "Array":
return Array, nil
case "InteropInterface":
return InteropInterface, nil
case "Void":
return Void, nil
default:
return Unknown, errors.Errorf("unknown stack parameter type: %s", s)
}
}
// MarshalJSON implements the json.Marshaler interface.
func (t *StackParamType) MarshalJSON() ([]byte, error) {
return []byte(`"` + t.String() + `"`), nil
}
// UnmarshalJSON sets StackParamType from JSON-encoded data.
func (t *StackParamType) UnmarshalJSON(data []byte) (err error) {
var (
s = string(data)
l = len(s)
)
if l < 2 || s[0] != '"' || s[l-1] != '"' {
*t = Unknown
return errors.Errorf("invalid type: %s", s)
}
*t, err = StackParamTypeFromString(s[1 : l-1])
return
}
// MarshalYAML implements the YAML Marshaler interface.
func (t *StackParamType) MarshalYAML() (interface{}, error) {
return t.String(), nil
}
// UnmarshalYAML implements the YAML Unmarshaler interface.
func (t *StackParamType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var name string
err := unmarshal(&name)
if err != nil {
return err
}
*t, err = StackParamTypeFromString(name)
return err
}
// StackParam represent a stack parameter.
type StackParam struct {
Type StackParamType `json:"type"`
Value interface{} `json:"value"`
}
type rawStackParam struct {
Type StackParamType `json:"type"`
Value json.RawMessage `json:"value"`
}
// UnmarshalJSON implements Unmarshaler interface.
func (p *StackParam) UnmarshalJSON(data []byte) (err error) {
var (
r rawStackParam
i int64
s string
b []byte
)
if err = json.Unmarshal(data, &r); err != nil {
return
}
switch p.Type = r.Type; r.Type {
case ByteArray:
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
if b, err = hex.DecodeString(s); err != nil {
return
}
p.Value = b
case String:
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
p.Value = s
case Integer:
if err = json.Unmarshal(r.Value, &i); err == nil {
p.Value = i
return
}
// sometimes integer comes as string
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
if i, err = strconv.ParseInt(s, 10, 64); err != nil {
return
}
p.Value = i
case Array:
// https://github.com/neo-project/neo/blob/3d59ecca5a8deb057bdad94b3028a6d5e25ac088/neo/Network/RPC/RpcServer.cs#L67
var rs []StackParam
if err = json.Unmarshal(r.Value, &rs); err != nil {
return
}
p.Value = rs
case Hash160:
var h util.Uint160
if err = json.Unmarshal(r.Value, &h); err != nil {
return
}
p.Value = h
case Hash256:
var h util.Uint256
if err = json.Unmarshal(r.Value, &h); err != nil {
return
}
p.Value = h
default:
return errors.New("not implemented")
}
return
}
// StackParams is an array of StackParam (TODO: drop it?).
type StackParams []StackParam
// TryParseArray converts an array of StackParam into an array of more appropriate things.
func (p StackParams) TryParseArray(vals ...interface{}) error {
var (
err error
i int
par StackParam
)
if len(p) != len(vals) {
return errors.New("receiver array doesn't fit the StackParams length")
}
for i, par = range p {
if err = par.TryParse(vals[i]); err != nil {
return err
}
}
return nil
}
// TryParse converts one StackParam into something more appropriate.
func (p StackParam) TryParse(dest interface{}) error {
var (
err error
ok bool
data []byte
)
switch p.Type {
case ByteArray:
if data, ok = p.Value.([]byte); !ok {
return errors.Errorf("failed to cast %s to []byte", p.Value)
}
switch dest := dest.(type) {
case *util.Uint160:
if *dest, err = util.Uint160DecodeBytesBE(data); err != nil {
return err
}
return nil
case *[]byte:
*dest = data
return nil
case *util.Uint256:
if *dest, err = util.Uint256DecodeBytesLE(data); err != nil {
return err
}
return nil
case *int64, *int32, *int16, *int8, *int, *uint64, *uint32, *uint16, *uint8, *uint:
i := bytesToUint64(data)
switch dest := dest.(type) {
case *int64:
*dest = int64(i)
case *int32:
*dest = int32(i)
case *int16:
*dest = int16(i)
case *int8:
*dest = int8(i)
case *int:
*dest = int(i)
case *uint64:
*dest = i
case *uint32:
*dest = uint32(i)
case *uint16:
*dest = uint16(i)
case *uint8:
*dest = uint8(i)
case *uint:
*dest = uint(i)
}
case *string:
*dest = string(data)
return nil
default:
return errors.Errorf("cannot cast stackparam of type %s to type %s", p.Type, dest)
}
default:
return errors.New("cannot define stackparam type")
}
return nil
}
func bytesToUint64(b []byte) uint64 {
data := make([]byte, 8)
copy(data[8-len(b):], util.ArrayReverse(b))
return binary.BigEndian.Uint64(data)
}

200
pkg/rpc/request/stack_param_test.go
View file

@ -1,200 +0,0 @@
package request
import (
"encoding/json"
"reflect"
"testing"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
)
var testCases = []struct {
input string
result StackParam
}{
{
input: `{"type":"Integer","value":12345}`,
result: StackParam{Type: Integer, Value: int64(12345)},
},
{
input: `{"type":"Integer","value":"12345"}`,
result: StackParam{Type: Integer, Value: int64(12345)},
},
{
input: `{"type":"ByteArray","value":"010203"}`,
result: StackParam{Type: ByteArray, Value: []byte{0x01, 0x02, 0x03}},
},
{
input: `{"type":"String","value":"Some string"}`,
result: StackParam{Type: String, Value: "Some string"},
},
{
input: `{"type":"Array","value":[
{"type": "String", "value": "str 1"},
{"type": "Integer", "value": 2}]}`,
result: StackParam{
Type: Array,
Value: []StackParam{
{Type: String, Value: "str 1"},
{Type: Integer, Value: int64(2)},
},
},
},
{
input: `{"type": "Hash160", "value": "0bcd2978634d961c24f5aea0802297ff128724d6"}`,
result: StackParam{
Type: Hash160,
Value: util.Uint160{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
},
},
{
input: `{"type": "Hash256", "value": "f037308fa0ab18155bccfc08485468c112409ea5064595699e98c545f245f32d"}`,
result: StackParam{
Type: Hash256,
Value: util.Uint256{
0x2d, 0xf3, 0x45, 0xf2, 0x45, 0xc5, 0x98, 0x9e,
0x69, 0x95, 0x45, 0x06, 0xa5, 0x9e, 0x40, 0x12,
0xc1, 0x68, 0x54, 0x48, 0x08, 0xfc, 0xcc, 0x5b,
0x15, 0x18, 0xab, 0xa0, 0x8f, 0x30, 0x37, 0xf0,
},
},
},
}
var errorCases = []string{
`{"type": "ByteArray","value":`, // incorrect JSON
`{"type": "ByteArray","value":1}`, // incorrect Value
`{"type": "ByteArray","value":"12zz"}`, // incorrect ByteArray value
`{"type": "String","value":`, // incorrect JSON
`{"type": "String","value":1}`, // incorrect Value
`{"type": "Integer","value": "nn"}`, // incorrect Integer value
`{"type": "Integer","value": []}`, // incorrect Integer value
`{"type": "Array","value": 123}`, // incorrect Array value
`{"type": "Hash160","value": "0bcd"}`, // incorrect Uint160 value
`{"type": "Hash256","value": "0bcd"}`, // incorrect Uint256 value
`{"type": "Stringg","value": ""}`, // incorrect type
`{"type": {},"value": ""}`, // incorrect value
`{"type": "InteropInterface","value": ""}`, // ununmarshable type
}
func TestStackParam_UnmarshalJSON(t *testing.T) {
var s StackParam
for _, tc := range testCases {
assert.NoError(t, json.Unmarshal([]byte(tc.input), &s))
assert.Equal(t, s, tc.result)
}
for _, input := range errorCases {
assert.Error(t, json.Unmarshal([]byte(input), &s))
}
}
var tryParseTestCases = []struct {
input interface{}
expected interface{}
}{
{
input: []byte{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
expected: util.Uint160{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
},
{
input: []byte{
0xf0, 0x37, 0x30, 0x8f, 0xa0, 0xab, 0x18, 0x15,
0x5b, 0xcc, 0xfc, 0x08, 0x48, 0x54, 0x68, 0xc1,
0x12, 0x40, 0x9e, 0xa5, 0x06, 0x45, 0x95, 0x69,
0x9e, 0x98, 0xc5, 0x45, 0xf2, 0x45, 0xf3, 0x2d,
},
expected: util.Uint256{
0x2d, 0xf3, 0x45, 0xf2, 0x45, 0xc5, 0x98, 0x9e,
0x69, 0x95, 0x45, 0x06, 0xa5, 0x9e, 0x40, 0x12,
0xc1, 0x68, 0x54, 0x48, 0x08, 0xfc, 0xcc, 0x5b,
0x15, 0x18, 0xab, 0xa0, 0x8f, 0x30, 0x37, 0xf0,
},
},
{
input: []byte{0, 1, 2, 3, 4, 9, 8, 6},
expected: []byte{0, 1, 2, 3, 4, 9, 8, 6},
},
{
input: []byte{0x63, 0x78, 0x29, 0xcd, 0x0b},
expected: int64(50686687331),
},
{
input: []byte("this is a test string"),
expected: "this is a test string",
},
}
func TestStackParam_TryParse(t *testing.T) {
for _, tc := range tryParseTestCases {
t.Run(reflect.TypeOf(tc.expected).String(), func(t *testing.T) {
input := StackParam{
Type: ByteArray,
Value: tc.input,
}
val := reflect.New(reflect.TypeOf(tc.expected))
assert.NoError(t, input.TryParse(val.Interface()))
assert.Equal(t, tc.expected, val.Elem().Interface())
})
}
t.Run("[]Uint160", func(t *testing.T) {
exp1 := util.Uint160{1, 2, 3, 4, 5}
exp2 := util.Uint160{9, 8, 7, 6, 5}
params := StackParams{
{
Type: ByteArray,
Value: exp1.BytesBE(),
},
{
Type: ByteArray,
Value: exp2.BytesBE(),
},
}
var out1, out2 util.Uint160
assert.NoError(t, params.TryParseArray(&out1, &out2))
assert.Equal(t, exp1, out1)
assert.Equal(t, exp2, out2)
})
}
func TestStackParamType_String(t *testing.T) {
types := []StackParamType{
Signature,
Boolean,
Integer,
Hash160,
Hash256,
ByteArray,
PublicKey,
String,
Array,
InteropInterface,
Void,
}
for _, exp := range types {
actual, err := StackParamTypeFromString(exp.String())
assert.NoError(t, err)
assert.Equal(t, exp, actual)
}
actual, err := StackParamTypeFromString(Unknown.String())
assert.Error(t, err)
assert.Equal(t, Unknown, actual)
}

14
pkg/rpc/request/txBuilder.go
View file

@ -148,31 +148,31 @@ func expandArrayIntoScript(script *io.BinWriter, slice []Param) error {
return err
}
switch fp.Type {
case ByteArray, Signature:
case smartcontract.ByteArrayType, smartcontract.SignatureType:
str, err := fp.Value.GetBytesHex()
if err != nil {
return err
}
emit.Bytes(script, str)
case String:
case smartcontract.StringType:
str, err := fp.Value.GetString()
if err != nil {
return err
}
emit.String(script, str)
case Hash160:
case smartcontract.Hash160Type:
hash, err := fp.Value.GetUint160FromHex()
if err != nil {
return err
}
emit.Bytes(script, hash.BytesBE())
case Hash256:
case smartcontract.Hash256Type:
hash, err := fp.Value.GetUint256()
if err != nil {
return err
}
emit.Bytes(script, hash.BytesBE())
case PublicKey:
case smartcontract.PublicKeyType:
str, err := fp.Value.GetString()
if err != nil {
return err
@ -182,13 +182,13 @@ func expandArrayIntoScript(script *io.BinWriter, slice []Param) error {
return err
}
emit.Bytes(script, key.Bytes())
case Integer:
case smartcontract.IntegerType:
val, err := fp.Value.GetInt()
if err != nil {
return err
}
emit.Int(script, int64(val))
case Boolean:
case smartcontract.BoolType:
str, err := fp.Value.GetString()
if err != nil {
return err

41
pkg/rpc/request/tx_builder_test.go
View file

@ -4,6 +4,7 @@ import (
"encoding/hex"
"testing"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
@ -29,31 +30,31 @@ func TestInvocationScriptCreationGood(t *testing.T) {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{}}},
script: "00c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: ByteArray, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.ByteArrayType, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
script: "1450befd26fdf6e4d957c11e078b24ebce6291456f51c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Signature, Value: Param{Type: StringT, Value: "4edf5005771de04619235d5a4c7a9a11bb78e008541f1da7725f654c33380a3c87e2959a025da706d7255cb3a3fa07ebe9c6559d0d9e6213c68049168eb1056f"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.SignatureType, Value: Param{Type: StringT, Value: "4edf5005771de04619235d5a4c7a9a11bb78e008541f1da7725f654c33380a3c87e2959a025da706d7255cb3a3fa07ebe9c6559d0d9e6213c68049168eb1056f"}}}}}},
script: "404edf5005771de04619235d5a4c7a9a11bb78e008541f1da7725f654c33380a3c87e2959a025da706d7255cb3a3fa07ebe9c6559d0d9e6213c68049168eb1056f51c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: String, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.StringType, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
script: "283530626566643236666466366534643935376331316530373862323465626365363239313435366651c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Hash160, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.Hash160Type, Value: Param{Type: StringT, Value: "50befd26fdf6e4d957c11e078b24ebce6291456f"}}}}}},
script: "146f459162ceeb248b071ec157d9e4f6fd26fdbe5051c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Hash256, Value: Param{Type: StringT, Value: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.Hash256Type, Value: Param{Type: StringT, Value: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7"}}}}}},
script: "20e72d286979ee6cb1b7e65dfddfb2e384100b8d148e7758de42e4168b71792c6051c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: PublicKey, Value: Param{Type: StringT, Value: "03c089d7122b840a4935234e82e26ae5efd0c2acb627239dc9f207311337b6f2c1"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.PublicKeyType, Value: Param{Type: StringT, Value: "03c089d7122b840a4935234e82e26ae5efd0c2acb627239dc9f207311337b6f2c1"}}}}}},
script: "2103c089d7122b840a4935234e82e26ae5efd0c2acb627239dc9f207311337b6f2c151c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Integer, Value: Param{Type: NumberT, Value: 42}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.IntegerType, Value: Param{Type: NumberT, Value: 42}}}}}},
script: "012a51c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Boolean, Value: Param{Type: StringT, Value: "true"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.BoolType, Value: Param{Type: StringT, Value: "true"}}}}}},
script: "5151c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}, {
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Boolean, Value: Param{Type: StringT, Value: "false"}}}}}},
ps: Params{{Type: StringT, Value: "a"}, {Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.BoolType, Value: Param{Type: StringT, Value: "false"}}}}}},
script: "0051c10161676f459162ceeb248b071ec157d9e4f6fd26fdbe50",
}}
for _, ps := range paramScripts {
@ -70,17 +71,17 @@ func TestInvocationScriptCreationBad(t *testing.T) {
{{Type: NumberT, Value: "qwerty"}},
{{Type: ArrayT, Value: 42}},
{{Type: ArrayT, Value: []Param{{Type: NumberT, Value: 42}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: ByteArray, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Signature, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: String, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Hash160, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Hash256, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: PublicKey, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: PublicKey, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Integer, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Boolean, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Boolean, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: Unknown, Value: Param{}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.ByteArrayType, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.SignatureType, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.StringType, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.Hash160Type, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.Hash256Type, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.PublicKeyType, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.PublicKeyType, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.IntegerType, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.BoolType, Value: Param{Type: NumberT, Value: 42}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.BoolType, Value: Param{Type: StringT, Value: "qwerty"}}}}}},
{{Type: ArrayT, Value: []Param{{Type: FuncParamT, Value: FuncParam{Type: smartcontract.UnknownType, Value: Param{}}}}}},
}
for _, ps := range testParams {
_, err := CreateFunctionInvocationScript(contract, ps)

60
pkg/rpc/response/result/application_log.go Normal file
View file

@ -0,0 +1,60 @@
package result
import (
"encoding/json"
"github.com/CityOfZion/neo-go/pkg/core/state"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
)
// ApplicationLog wrapper used for the representation of the
// state.AppExecResult based on the specific tx on the RPC Server.
type ApplicationLog struct {
TxHash util.Uint256 `json:"txid"`
Executions []Execution `json:"executions"`
}
// Execution response wrapper
type Execution struct {
Trigger string `json:"trigger"`
ScriptHash util.Uint160 `json:"contract"`
VMState string `json:"vmstate"`
GasConsumed util.Fixed8 `json:"gas_consumed"`
Stack json.RawMessage `json:"stack"`
Events []NotificationEvent `json:"notifications"`
}
//NotificationEvent response wrapper
type NotificationEvent struct {
Contract util.Uint160 `json:"contract"`
Item smartcontract.Parameter `json:"state"`
}
// NewApplicationLog creates a new ApplicationLog wrapper.
func NewApplicationLog(appExecRes *state.AppExecResult, scriptHash util.Uint160) ApplicationLog {
events := make([]NotificationEvent, 0, len(appExecRes.Events))
for _, e := range appExecRes.Events {
item := e.Item.ToContractParameter()
events = append(events, NotificationEvent{
Contract: e.ScriptHash,
Item: item,
})
}
triggerString := appExecRes.Trigger.String()
executions := []Execution{{
Trigger: triggerString,
ScriptHash: scriptHash,
VMState: appExecRes.VMState,
GasConsumed: appExecRes.GasConsumed,
Stack: json.RawMessage(appExecRes.Stack),
Events: events,
}}
return ApplicationLog{
TxHash: appExecRes.TxHash,
Executions: executions,
}
}

4
pkg/rpc/response/types.go
View file

@ -3,8 +3,8 @@ package response
import (
"encoding/json"
"github.com/CityOfZion/neo-go/pkg/rpc/request"
"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/vm"
)
@ -14,7 +14,7 @@ type InvokeResult struct {
State vm.State `json:"state"`
GasConsumed string `json:"gas_consumed"`
Script string `json:"script"`
Stack []request.StackParam
Stack []smartcontract.Parameter
}
// Header is a generic JSON-RPC 2.0 response header (ID and JSON-RPC version).

8
pkg/rpc/server/prometheus.go
View file

@ -4,6 +4,13 @@ import "github.com/prometheus/client_golang/prometheus"
// Metrics used in monitoring service.
var (
getapplicationlogCalled = prometheus.NewCounter(
prometheus.CounterOpts{
Help: "Number of calls to getapplicationlog rpc endpoint",
Name: "getapplicationlog_called",
Namespace: "neogo",
},
)
getbestblockhashCalled = prometheus.NewCounter(
prometheus.CounterOpts{
Help: "Number of calls to getbestblockhash rpc endpoint",
@ -143,6 +150,7 @@ var (
func init() {
prometheus.MustRegister(
getapplicationlogCalled,
getbestblockhashCalled,
getbestblockCalled,
getblockcountCalled,

38
pkg/rpc/server/server.go
View file

@ -12,6 +12,7 @@ import (
"github.com/CityOfZion/neo-go/pkg/core"
"github.com/CityOfZion/neo-go/pkg/core/state"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/crypto/hash"
"github.com/CityOfZion/neo-go/pkg/encoding/address"
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/network"
@ -114,6 +115,10 @@ func (s *Server) methodHandler(w http.ResponseWriter, req *request.In, reqParams
Methods:
switch req.Method {
case "getapplicationlog":
getapplicationlogCalled.Inc()
results, resultsErr = s.getApplicationLog(reqParams)
case "getbestblockhash":
getbestblockhashCalled.Inc()
results = "0x" + s.chain.CurrentBlockHash().StringLE()
@ -284,6 +289,39 @@ Methods:
s.WriteResponse(req, w, results)
}
// getApplicationLog returns the contract log based on the specified txid.
func (s *Server) getApplicationLog(reqParams request.Params) (interface{}, error) {
param, ok := reqParams.Value(0)
if !ok {
return nil, response.ErrInvalidParams
}
txHash, err := param.GetUint256()
if err != nil {
return nil, response.ErrInvalidParams
}
appExecResult, err := s.chain.GetAppExecResult(txHash)
if err != nil {
return nil, response.NewRPCError("Unknown transaction", "", nil)
}
tx, _, err := s.chain.GetTransaction(txHash)
if err != nil {
return nil, response.NewRPCError("Error while getting transaction", "", nil)
}
var scriptHash util.Uint160
switch t := tx.Data.(type) {
case *transaction.InvocationTX:
scriptHash = hash.Hash160(t.Script)
default:
return nil, response.NewRPCError("Invalid transaction type", "", nil)
}
return result.NewApplicationLog(appExecResult, scriptHash), nil
}
func (s *Server) getStorage(ps request.Params) (interface{}, error) {
param, ok := ps.Value(0)
if !ok {

38
pkg/rpc/server/server_test.go
View file

@ -40,6 +40,44 @@ type rpcTestCase struct {
}
var rpcTestCases = map[string][]rpcTestCase{
"getapplicationlog": {
{
name: "positive",
params: `["d5cf936296de912aa4d051531bd8d25c7a58fb68fc7f87c8d3e6e85475187c08"]`,
result: func(e *executor) interface{} { return &result.ApplicationLog{} },
check: func(t *testing.T, e *executor, acc interface{}) {
res, ok := acc.(*result.ApplicationLog)
require.True(t, ok)
expectedTxHash := util.Uint256{0x8, 0x7c, 0x18, 0x75, 0x54, 0xe8, 0xe6, 0xd3, 0xc8, 0x87, 0x7f, 0xfc, 0x68, 0xfb, 0x58, 0x7a, 0x5c, 0xd2, 0xd8, 0x1b, 0x53, 0x51, 0xd0, 0xa4, 0x2a, 0x91, 0xde, 0x96, 0x62, 0x93, 0xcf, 0xd5}
assert.Equal(t, expectedTxHash, res.TxHash)
assert.Equal(t, 1, len(res.Executions))
assert.Equal(t, "Application", res.Executions[0].Trigger)
assert.Equal(t, "HALT", res.Executions[0].VMState)
},
},
{
name: "no params",
params: `[]`,
fail: true,
},
{
name: "invalid address",
params: `["notahash"]`,
fail: true,
},
{
name: "invalid tx hash",
params: `["d24cc1d52b5c0216cbf3835bb5bac8ccf32639fa1ab6627ec4e2b9f33f7ec02f"]`,
fail: true,
},
{
name: "invalid tx type",
params: `["f9adfde059810f37b3d0686d67f6b29034e0c669537df7e59b40c14a0508b9ed"]`,
fail: true,
},
},
"getaccountstate": {
{
name: "positive",

482
pkg/smartcontract/param_context.go
View file

@ -1,33 +1,16 @@
package smartcontract
import (
"encoding/binary"
"encoding/hex"
"encoding/json"
"errors"
"math/bits"
"strconv"
"strings"
"unicode/utf8"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/encoding/address"
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/util"
)
// ParamType represents the Type of the contract parameter.
type ParamType byte
// A list of supported smart contract parameter types.
const (
SignatureType ParamType = iota
BoolType
IntegerType
Hash160Type
Hash256Type
ByteArrayType
PublicKeyType
StringType
ArrayType
"github.com/pkg/errors"
)
// PropertyState represents contract properties (flags).
@ -49,62 +32,6 @@ type Parameter struct {
Value interface{} `json:"value"`
}
func (pt ParamType) String() string {
switch pt {
case SignatureType:
return "Signature"
case BoolType:
return "Boolean"
case IntegerType:
return "Integer"
case Hash160Type:
return "Hash160"
case Hash256Type:
return "Hash256"
case ByteArrayType:
return "ByteArray"
case PublicKeyType:
return "PublicKey"
case StringType:
return "String"
case ArrayType:
return "Array"
default:
return ""
}
}
// MarshalJSON implements the json.Marshaler interface.
func (pt ParamType) MarshalJSON() ([]byte, error) {
return []byte(`"` + pt.String() + `"`), nil
}
// UnmarshalJSON implements json.Unmarshaler interface.
func (pt *ParamType) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
p, err := parseParamType(s)
if err != nil {
return err
}
*pt = p
return nil
}
// EncodeBinary implements io.Serializable interface.
func (pt ParamType) EncodeBinary(w *io.BinWriter) {
w.WriteB(byte(pt))
}
// DecodeBinary implements io.Serializable interface.
func (pt *ParamType) DecodeBinary(r *io.BinReader) {
*pt = ParamType(r.ReadB())
}
// NewParameter returns a Parameter with proper initialized Value
// of the given ParamType.
func NewParameter(t ParamType) Parameter {
@ -114,149 +41,278 @@ func NewParameter(t ParamType) Parameter {
}
}
// parseParamType is a user-friendly string to ParamType converter, it's
// case-insensitive and makes the following conversions:
// signature -> SignatureType
// bool -> BoolType
// int -> IntegerType
// hash160 -> Hash160Type
// hash256 -> Hash256Type
// bytes -> ByteArrayType
// key -> PublicKeyType
// string -> StringType
// anything else generates an error.
func parseParamType(typ string) (ParamType, error) {
switch strings.ToLower(typ) {
case "signature":
return SignatureType, nil
case "bool":
return BoolType, nil
case "int":
return IntegerType, nil
case "hash160":
return Hash160Type, nil
case "hash256":
return Hash256Type, nil
case "bytes", "bytearray":
return ByteArrayType, nil
case "key":
return PublicKeyType, nil
case "string":
return StringType, nil
default:
// We deliberately don't support array here.
return 0, errors.New("wrong or unsupported parameter type")
}
type rawParameter struct {
Type ParamType `json:"type"`
Value json.RawMessage `json:"value"`
}
// adjustValToType is a value type-checker and converter.
func adjustValToType(typ ParamType, val string) (interface{}, error) {
switch typ {
case SignatureType:
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
type keyValuePair struct {
Key rawParameter `json:"key"`
Value rawParameter `json:"value"`
}
type rawKeyValuePair struct {
Key json.RawMessage `json:"key"`
Value json.RawMessage `json:"value"`
}
// MarshalJSON implements Marshaler interface.
func (p *Parameter) MarshalJSON() ([]byte, error) {
var (
resultRawValue json.RawMessage
resultErr error
)
switch p.Type {
case BoolType, IntegerType, StringType, Hash256Type, Hash160Type:
resultRawValue, resultErr = json.Marshal(p.Value)
case PublicKeyType, ByteArrayType, SignatureType:
resultRawValue, resultErr = json.Marshal(hex.EncodeToString(p.Value.([]byte)))
case ArrayType:
var value = make([]rawParameter, 0)
for _, parameter := range p.Value.([]Parameter) {
rawValue, err := json.Marshal(parameter.Value)
if err != nil {
return nil, err
}
value = append(value, rawParameter{
Type: parameter.Type,
Value: rawValue,
})
}
if len(b) != 64 {
return nil, errors.New("not a signature")
resultRawValue, resultErr = json.Marshal(value)
case MapType:
var value []keyValuePair
for key, val := range p.Value.(map[Parameter]Parameter) {
rawKey, err := json.Marshal(key.Value)
if err != nil {
return nil, err
}
rawValue, err := json.Marshal(val.Value)
if err != nil {
return nil, err
}
value = append(value, keyValuePair{
Key: rawParameter{
Type: key.Type,
Value: rawKey,
},
Value: rawParameter{
Type: val.Type,
Value: rawValue,
},
})
}
return val, nil
resultRawValue, resultErr = json.Marshal(value)
default:
resultErr = errors.Errorf("Marshaller for type %s not implemented", p.Type)
}
if resultErr != nil {
return nil, resultErr
}
return json.Marshal(rawParameter{
Type: p.Type,
Value: resultRawValue,
})
}
// UnmarshalJSON implements Unmarshaler interface.
func (p *Parameter) UnmarshalJSON(data []byte) (err error) {
var (
r rawParameter
i int64
s string
b []byte
boolean bool
)
if err = json.Unmarshal(data, &r); err != nil {
return
}
switch p.Type = r.Type; r.Type {
case BoolType:
switch val {
case "true":
return true, nil
case "false":
return false, nil
default:
return nil, errors.New("invalid boolean value")
if err = json.Unmarshal(r.Value, &boolean); err != nil {
return
}
case IntegerType:
return strconv.Atoi(val)
case Hash160Type:
u, err := address.StringToUint160(val)
if err == nil {
return hex.EncodeToString(u.BytesBE()), nil
p.Value = boolean
case ByteArrayType, PublicKeyType:
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
if b, err = hex.DecodeString(s); err != nil {
return
}
if len(b) != 20 {
return nil, errors.New("not a hash160")
}
return val, nil
case Hash256Type:
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
if len(b) != 32 {
return nil, errors.New("not a hash256")
}
return val, nil
case ByteArrayType:
_, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
return val, nil
case PublicKeyType:
_, err := keys.NewPublicKeyFromString(val)
if err != nil {
return nil, err
}
return val, nil
p.Value = b
case StringType:
return val, nil
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
p.Value = s
case IntegerType:
if err = json.Unmarshal(r.Value, &i); err == nil {
p.Value = i
return
}
// sometimes integer comes as string
if err = json.Unmarshal(r.Value, &s); err != nil {
return
}
if i, err = strconv.ParseInt(s, 10, 64); err != nil {
return
}
p.Value = i
case ArrayType:
// https://github.com/neo-project/neo/blob/3d59ecca5a8deb057bdad94b3028a6d5e25ac088/neo/Network/RPC/RpcServer.cs#L67
var rs []Parameter
if err = json.Unmarshal(r.Value, &rs); err != nil {
return
}
p.Value = rs
case MapType:
var rawMap []rawKeyValuePair
if err = json.Unmarshal(r.Value, &rawMap); err != nil {
return
}
rs := make(map[Parameter]Parameter)
for _, p := range rawMap {
var key, value Parameter
if err = json.Unmarshal(p.Key, &key); err != nil {
return
}
if err = json.Unmarshal(p.Value, &value); err != nil {
return
}
rs[key] = value
}
p.Value = rs
case Hash160Type:
var h util.Uint160
if err = json.Unmarshal(r.Value, &h); err != nil {
return
}
p.Value = h
case Hash256Type:
var h util.Uint256
if err = json.Unmarshal(r.Value, &h); err != nil {
return
}
p.Value = h
default:
return nil, errors.New("unsupported parameter type")
return errors.Errorf("Unmarshaller for type %s not implemented", p.Type)
}
return
}
// inferParamType tries to infer the value type from its contents. It returns
// IntegerType for anything that looks like decimal integer (can be converted
// with strconv.Atoi), BoolType for true and false values, Hash160Type for
// addresses and hex strings encoding 20 bytes long values, PublicKeyType for
// valid hex-encoded public keys, Hash256Type for hex-encoded 32 bytes values,
// SignatureType for hex-encoded 64 bytes values, ByteArrayType for any other
// valid hex-encoded values and StringType for anything else.
func inferParamType(val string) ParamType {
var err error
// Params is an array of Parameter (TODO: drop it?).
type Params []Parameter
_, err = strconv.Atoi(val)
if err == nil {
return IntegerType
// TryParseArray converts an array of Parameter into an array of more appropriate things.
func (p Params) TryParseArray(vals ...interface{}) error {
var (
err error
i int
par Parameter
)
if len(p) != len(vals) {
return errors.New("receiver array doesn't fit the Params length")
}
if val == "true" || val == "false" {
return BoolType
}
_, err = address.StringToUint160(val)
if err == nil {
return Hash160Type
}
_, err = keys.NewPublicKeyFromString(val)
if err == nil {
return PublicKeyType
}
unhexed, err := hex.DecodeString(val)
if err == nil {
switch len(unhexed) {
case 20:
return Hash160Type
case 32:
return Hash256Type
case 64:
return SignatureType
default:
return ByteArrayType
for i, par = range p {
if err = par.TryParse(vals[i]); err != nil {
return err
}
}
// Anything can be a string.
return StringType
return nil
}
// TryParse converts one Parameter into something more appropriate.
func (p Parameter) TryParse(dest interface{}) error {
var (
err error
ok bool
data []byte
)
switch p.Type {
case ByteArrayType:
if data, ok = p.Value.([]byte); !ok {
return errors.Errorf("failed to cast %s to []byte", p.Value)
}
switch dest := dest.(type) {
case *util.Uint160:
if *dest, err = util.Uint160DecodeBytesBE(data); err != nil {
return err
}
return nil
case *[]byte:
*dest = data
return nil
case *util.Uint256:
if *dest, err = util.Uint256DecodeBytesLE(data); err != nil {
return err
}
return nil
case *int64, *int32, *int16, *int8, *int, *uint64, *uint32, *uint16, *uint8, *uint:
var size int
switch dest.(type) {
case *int64, *uint64:
size = 64
case *int32, *uint32:
size = 32
case *int16, *uint16:
size = 16
case *int8, *uint8:
size = 8
case *int, *uint:
size = bits.UintSize
}
i, err := bytesToUint64(data, size)
if err != nil {
return err
}
switch dest := dest.(type) {
case *int64:
*dest = int64(i)
case *int32:
*dest = int32(i)
case *int16:
*dest = int16(i)
case *int8:
*dest = int8(i)
case *int:
*dest = int(i)
case *uint64:
*dest = i
case *uint32:
*dest = uint32(i)
case *uint16:
*dest = uint16(i)
case *uint8:
*dest = uint8(i)
case *uint:
*dest = uint(i)
}
case *string:
*dest = string(data)
return nil
default:
return errors.Errorf("cannot cast param of type %s to type %s", p.Type, dest)
}
default:
return errors.New("cannot define param type")
}
return nil
}
func bytesToUint64(b []byte, size int) (uint64, error) {
var length = size / 8
if len(b) > length {
return 0, errors.Errorf("input doesn't fit into %d bits", size)
}
if len(b) < length {
data := make([]byte, length)
copy(data, b)
return binary.LittleEndian.Uint64(data), nil
}
return binary.LittleEndian.Uint64(b), nil
}
// NewParameterFromString returns a new Parameter initialized from the given
@ -282,10 +338,14 @@ func NewParameterFromString(in string) (*Parameter, error) {
}
if char == ':' && !escaped && !hadType {
typStr := buf.String()
res.Type, err = parseParamType(typStr)
res.Type, err = ParseParamType(typStr)
if err != nil {
return nil, err
}
// We currently do not support following types:
if res.Type == ArrayType || res.Type == MapType || res.Type == InteropInterfaceType || res.Type == VoidType {
return nil, errors.Errorf("Unsupported contract parameter type: %s", res.Type)
}
buf.Reset()
hadType = true
continue
@ -310,19 +370,3 @@ func NewParameterFromString(in string) (*Parameter, error) {
}
return res, nil
}
// ContextItem represents a transaction context item.
type ContextItem struct {
Script util.Uint160
Parameters []Parameter
Signatures []Signature
}
// Signature represents a transaction signature.
type Signature struct {
Data []byte
PublicKey []byte
}
// ParameterContext holds the parameter context.
type ParameterContext struct{}

608
pkg/smartcontract/param_context_test.go
View file

@ -1,283 +1,357 @@
package smartcontract
import (
"encoding/json"
"math"
"reflect"
"testing"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
)
func TestParseParamType(t *testing.T) {
var inouts = []struct {
in string
out ParamType
err bool
}{{
in: "signature",
out: SignatureType,
}, {
in: "Signature",
out: SignatureType,
}, {
in: "SiGnAtUrE",
out: SignatureType,
}, {
in: "bool",
out: BoolType,
}, {
in: "int",
out: IntegerType,
}, {
in: "hash160",
out: Hash160Type,
}, {
in: "hash256",
out: Hash256Type,
}, {
in: "bytes",
out: ByteArrayType,
}, {
in: "key",
out: PublicKeyType,
}, {
in: "string",
out: StringType,
}, {
in: "array",
err: true,
}, {
in: "qwerty",
err: true,
}}
for _, inout := range inouts {
out, err := parseParamType(inout.in)
if inout.err {
assert.NotNil(t, err, "should error on '%s' input", inout.in)
} else {
assert.Nil(t, err, "shouldn't error on '%s' input", inout.in)
assert.Equal(t, inout.out, out, "bad output for '%s' input", inout.in)
}
var marshalJSONTestCases = []struct {
input Parameter
result string
}{
{
input: Parameter{Type: IntegerType, Value: int64(12345)},
result: `{"type":"Integer","value":12345}`,
},
{
input: Parameter{Type: StringType, Value: "Some string"},
result: `{"type":"String","value":"Some string"}`,
},
{
input: Parameter{Type: BoolType, Value: true},
result: `{"type":"Boolean","value":true}`,
},
{
input: Parameter{Type: ByteArrayType, Value: []byte{0x01, 0x02, 0x03}},
result: `{"type":"ByteArray","value":"010203"}`,
},
{
input: Parameter{
Type: PublicKeyType,
Value: []byte{0x03, 0xb3, 0xbf, 0x15, 0x02, 0xfb, 0xdc, 0x05, 0x44, 0x9b, 0x50, 0x6a, 0xaf, 0x04, 0x57, 0x97, 0x24, 0x02, 0x4b, 0x06, 0x54, 0x2e, 0x49, 0x26, 0x2b, 0xfa, 0xa3, 0xf7, 0x0e, 0x20, 0x00, 0x40, 0xa9},
},
result: `{"type":"PublicKey","value":"03b3bf1502fbdc05449b506aaf04579724024b06542e49262bfaa3f70e200040a9"}`,
},
{
input: Parameter{
Type: ArrayType,
Value: []Parameter{
{Type: StringType, Value: "str 1"},
{Type: IntegerType, Value: int64(2)},
},
},
result: `{"type":"Array","value":[{"type":"String","value":"str 1"},{"type":"Integer","value":2}]}`,
},
{
input: Parameter{
Type: MapType,
Value: map[Parameter]Parameter{
{Type: StringType, Value: "key1"}: {Type: IntegerType, Value: 1},
{Type: StringType, Value: "key2"}: {Type: StringType, Value: "two"},
},
},
result: `{"type":"Map","value":[{"key":{"type":"String","value":"key1"},"value":{"type":"Integer","value":1}},{"key":{"type":"String","value":"key2"},"value":{"type":"String","value":"two"}}]}`,
},
{
input: Parameter{
Type: MapType,
Value: map[Parameter]Parameter{
{Type: StringType, Value: "key1"}: {Type: ArrayType, Value: []Parameter{
{Type: StringType, Value: "str 1"},
{Type: IntegerType, Value: int64(2)},
}},
},
},
result: `{"type":"Map","value":[{"key":{"type":"String","value":"key1"},"value":{"type":"Array","value":[{"type":"String","value":"str 1"},{"type":"Integer","value":2}]}}]}`,
},
{
input: Parameter{
Type: Hash160Type,
Value: util.Uint160{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
},
result: `{"type":"Hash160","value":"0x0bcd2978634d961c24f5aea0802297ff128724d6"}`,
},
{
input: Parameter{
Type: Hash256Type,
Value: util.Uint256{
0x2d, 0xf3, 0x45, 0xf2, 0x45, 0xc5, 0x98, 0x9e,
0x69, 0x95, 0x45, 0x06, 0xa5, 0x9e, 0x40, 0x12,
0xc1, 0x68, 0x54, 0x48, 0x08, 0xfc, 0xcc, 0x5b,
0x15, 0x18, 0xab, 0xa0, 0x8f, 0x30, 0x37, 0xf0,
},
},
result: `{"type":"Hash256","value":"0xf037308fa0ab18155bccfc08485468c112409ea5064595699e98c545f245f32d"}`,
},
}
var marshalJSONErrorCases = []Parameter{
{
Type: UnknownType,
Value: nil,
},
{
Type: InteropInterfaceType,
Value: nil,
},
{
Type: IntegerType,
Value: math.Inf(1),
},
}
func TestParam_MarshalJSON(t *testing.T) {
for _, tc := range marshalJSONTestCases {
res, err := json.Marshal(&tc.input)
assert.NoError(t, err)
var actual, expected Parameter
assert.NoError(t, json.Unmarshal(res, &actual))
assert.NoError(t, json.Unmarshal([]byte(tc.result), &expected))
assert.Equal(t, expected, actual)
}
for _, input := range marshalJSONErrorCases {
_, err := json.Marshal(&input)
assert.Error(t, err)
}
}
func TestInferParamType(t *testing.T) {
var inouts = []struct {
in string
out ParamType
}{{
in: "42",
out: IntegerType,
}, {
in: "-42",
out: IntegerType,
}, {
in: "0",
out: IntegerType,
}, {
in: "2e10",
out: ByteArrayType,
}, {
in: "true",
out: BoolType,
}, {
in: "false",
out: BoolType,
}, {
in: "truee",
out: StringType,
}, {
in: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: Hash160Type,
}, {
in: "ZK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: StringType,
}, {
in: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: Hash160Type,
}, {
in: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: PublicKeyType,
}, {
in: "30b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: ByteArrayType,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: Hash256Type,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7da",
out: ByteArrayType,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
out: SignatureType,
}, {
in: "qwerty",
out: StringType,
}, {
in: "ab",
out: ByteArrayType,
}, {
in: "az",
out: StringType,
}, {
in: "bad",
out: StringType,
}, {
in: "фыва",
out: StringType,
}, {
in: "dead",
out: ByteArrayType,
}}
for _, inout := range inouts {
out := inferParamType(inout.in)
assert.Equal(t, inout.out, out, "bad output for '%s' input", inout.in)
var unmarshalJSONTestCases = []struct {
input string
result Parameter
}{
{
input: `{"type":"Bool","value":true}`,
result: Parameter{Type: BoolType, Value: true},
},
{
input: `{"type":"Integer","value":12345}`,
result: Parameter{Type: IntegerType, Value: int64(12345)},
},
{
input: `{"type":"Integer","value":"12345"}`,
result: Parameter{Type: IntegerType, Value: int64(12345)},
},
{
input: `{"type":"ByteArray","value":"010203"}`,
result: Parameter{Type: ByteArrayType, Value: []byte{0x01, 0x02, 0x03}},
},
{
input: `{"type":"String","value":"Some string"}`,
result: Parameter{Type: StringType, Value: "Some string"},
},
{
input: `{"type":"Array","value":[
{"type": "String", "value": "str 1"},
{"type": "Integer", "value": 2}]}`,
result: Parameter{
Type: ArrayType,
Value: []Parameter{
{Type: StringType, Value: "str 1"},
{Type: IntegerType, Value: int64(2)},
},
},
},
{
input: `{"type": "Hash160", "value": "0bcd2978634d961c24f5aea0802297ff128724d6"}`,
result: Parameter{
Type: Hash160Type,
Value: util.Uint160{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
},
},
{
input: `{"type": "Hash256", "value": "f037308fa0ab18155bccfc08485468c112409ea5064595699e98c545f245f32d"}`,
result: Parameter{
Type: Hash256Type,
Value: util.Uint256{
0x2d, 0xf3, 0x45, 0xf2, 0x45, 0xc5, 0x98, 0x9e,
0x69, 0x95, 0x45, 0x06, 0xa5, 0x9e, 0x40, 0x12,
0xc1, 0x68, 0x54, 0x48, 0x08, 0xfc, 0xcc, 0x5b,
0x15, 0x18, 0xab, 0xa0, 0x8f, 0x30, 0x37, 0xf0,
},
},
},
{
input: `{"type":"Map","value":[{"key":{"type":"String","value":"key1"},"value":{"type":"Integer","value":1}},{"key":{"type":"String","value":"key2"},"value":{"type":"String","value":"two"}}]}`,
result: Parameter{
Type: MapType,
Value: map[Parameter]Parameter{
{Type: StringType, Value: "key1"}: {Type: IntegerType, Value: int64(1)},
{Type: StringType, Value: "key2"}: {Type: StringType, Value: "two"},
},
},
},
{
input: `{"type":"Map","value":[{"key":{"type":"String","value":"key1"},"value":{"type":"Array","value":[{"type":"String","value":"str 1"},{"type":"Integer","value":2}]}}]}`,
result: Parameter{
Type: MapType,
Value: map[Parameter]Parameter{
{Type: StringType, Value: "key1"}: {Type: ArrayType, Value: []Parameter{
{Type: StringType, Value: "str 1"},
{Type: IntegerType, Value: int64(2)},
}},
},
},
},
{
result: Parameter{
Type: PublicKeyType,
Value: []byte{0x03, 0xb3, 0xbf, 0x15, 0x02, 0xfb, 0xdc, 0x05, 0x44, 0x9b, 0x50, 0x6a, 0xaf, 0x04, 0x57, 0x97, 0x24, 0x02, 0x4b, 0x06, 0x54, 0x2e, 0x49, 0x26, 0x2b, 0xfa, 0xa3, 0xf7, 0x0e, 0x20, 0x00, 0x40, 0xa9},
},
input: `{"type":"PublicKey","value":"03b3bf1502fbdc05449b506aaf04579724024b06542e49262bfaa3f70e200040a9"}`,
},
}
var unmarshalJSONErrorCases = []string{
`{"type": "ByteArray","value":`, // incorrect JSON
`{"type": "ByteArray","value":1}`, // incorrect Value
`{"type": "ByteArray","value":"12zz"}`, // incorrect ByteArray value
`{"type": "String","value":`, // incorrect JSON
`{"type": "String","value":1}`, // incorrect Value
`{"type": "Integer","value": "nn"}`, // incorrect Integer value
`{"type": "Integer","value": []}`, // incorrect Integer value
`{"type": "Array","value": 123}`, // incorrect Array value
`{"type": "Hash160","value": "0bcd"}`, // incorrect Uint160 value
`{"type": "Hash256","value": "0bcd"}`, // incorrect Uint256 value
`{"type": "Stringg","value": ""}`, // incorrect type
`{"type": {},"value": ""}`, // incorrect value
`{"type": "Boolean","value": qwerty}`, // incorrect Bool value
`{"type": "Boolean","value": ""}`, // incorrect Bool value
`{"type": "Map","value": ["key": {}]}`, // incorrect Map value
`{"type": "Map","value": ["key": {"type":"String", "value":"qwer"}, "value": {"type":"Boolean"}]}`, // incorrect Map Value value
`{"type": "Map","value": ["key": {"type":"String"}, "value": {"type":"Boolean", "value":true}]}`, // incorrect Map Key value
`{"type": "InteropInterface","value": ""}`, // ununmarshable type
}
func TestParam_UnmarshalJSON(t *testing.T) {
var s Parameter
for _, tc := range unmarshalJSONTestCases {
assert.NoError(t, json.Unmarshal([]byte(tc.input), &s))
assert.Equal(t, s, tc.result)
}
for _, input := range unmarshalJSONErrorCases {
assert.Error(t, json.Unmarshal([]byte(input), &s))
}
}
func TestAdjustValToType(t *testing.T) {
var inouts = []struct {
typ ParamType
val string
out interface{}
err bool
}{{
typ: SignatureType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
}, {
typ: SignatureType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c",
err: true,
}, {
typ: SignatureType,
val: "qwerty",
err: true,
}, {
typ: BoolType,
val: "false",
out: false,
}, {
typ: BoolType,
val: "true",
out: true,
}, {
typ: BoolType,
val: "qwerty",
err: true,
}, {
typ: BoolType,
val: "42",
err: true,
}, {
typ: BoolType,
val: "0",
err: true,
}, {
typ: IntegerType,
val: "0",
out: 0,
}, {
typ: IntegerType,
val: "42",
out: 42,
}, {
typ: IntegerType,
val: "-42",
out: -42,
}, {
typ: IntegerType,
val: "q",
err: true,
}, {
typ: Hash160Type,
val: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: "23ba2703c53263e8d6e522dc32203339dcd8eee9",
}, {
typ: Hash160Type,
val: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: "50befd26fdf6e4d957c11e078b24ebce6291456f",
}, {
typ: Hash160Type,
val: "befd26fdf6e4d957c11e078b24ebce6291456f",
err: true,
}, {
typ: Hash160Type,
val: "q",
err: true,
}, {
typ: Hash256Type,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
}, {
typ: Hash256Type,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
err: true,
}, {
typ: Hash256Type,
val: "q",
err: true,
}, {
typ: ByteArrayType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
}, {
typ: ByteArrayType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
}, {
typ: ByteArrayType,
val: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: "50befd26fdf6e4d957c11e078b24ebce6291456f",
}, {
typ: ByteArrayType,
val: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
err: true,
}, {
typ: ByteArrayType,
val: "q",
err: true,
}, {
typ: ByteArrayType,
val: "ab",
out: "ab",
}, {
typ: PublicKeyType,
val: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
}, {
typ: PublicKeyType,
val: "01b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
err: true,
}, {
typ: PublicKeyType,
val: "q",
err: true,
}, {
typ: StringType,
val: "q",
out: "q",
}, {
typ: StringType,
val: "dead",
out: "dead",
}, {
typ: StringType,
val: "йцукен",
out: "йцукен",
}, {
typ: ArrayType,
val: "",
err: true,
}}
var tryParseTestCases = []struct {
input interface{}
expected interface{}
}{
{
input: []byte{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
expected: util.Uint160{
0x0b, 0xcd, 0x29, 0x78, 0x63, 0x4d, 0x96, 0x1c, 0x24, 0xf5,
0xae, 0xa0, 0x80, 0x22, 0x97, 0xff, 0x12, 0x87, 0x24, 0xd6,
},
},
{
input: []byte{
0xf0, 0x37, 0x30, 0x8f, 0xa0, 0xab, 0x18, 0x15,
0x5b, 0xcc, 0xfc, 0x08, 0x48, 0x54, 0x68, 0xc1,
0x12, 0x40, 0x9e, 0xa5, 0x06, 0x45, 0x95, 0x69,
0x9e, 0x98, 0xc5, 0x45, 0xf2, 0x45, 0xf3, 0x2d,
},
expected: util.Uint256{
0x2d, 0xf3, 0x45, 0xf2, 0x45, 0xc5, 0x98, 0x9e,
0x69, 0x95, 0x45, 0x06, 0xa5, 0x9e, 0x40, 0x12,
0xc1, 0x68, 0x54, 0x48, 0x08, 0xfc, 0xcc, 0x5b,
0x15, 0x18, 0xab, 0xa0, 0x8f, 0x30, 0x37, 0xf0,
},
},
{
input: []byte{0, 1, 2, 3, 4, 9, 8, 6},
expected: []byte{0, 1, 2, 3, 4, 9, 8, 6},
},
{
input: []byte{0x63, 0x78, 0x29, 0xcd, 0x0b},
expected: int64(50686687331),
},
{
input: []byte("this is a test string"),
expected: "this is a test string",
},
}
for _, inout := range inouts {
out, err := adjustValToType(inout.typ, inout.val)
if inout.err {
assert.NotNil(t, err, "should error on '%s/%s' input", inout.typ, inout.val)
} else {
assert.Nil(t, err, "shouldn't error on '%s/%s' input", inout.typ, inout.val)
assert.Equal(t, inout.out, out, "bad output for '%s/%s' input", inout.typ, inout.val)
}
func TestParam_TryParse(t *testing.T) {
for _, tc := range tryParseTestCases {
t.Run(reflect.TypeOf(tc.expected).String(), func(t *testing.T) {
input := Parameter{
Type: ByteArrayType,
Value: tc.input,
}
val := reflect.New(reflect.TypeOf(tc.expected))
assert.NoError(t, input.TryParse(val.Interface()))
assert.Equal(t, tc.expected, val.Elem().Interface())
})
}
t.Run("[]Uint160", func(t *testing.T) {
exp1 := util.Uint160{1, 2, 3, 4, 5}
exp2 := util.Uint160{9, 8, 7, 6, 5}
params := Params{
{
Type: ByteArrayType,
Value: exp1.BytesBE(),
},
{
Type: ByteArrayType,
Value: exp2.BytesBE(),
},
}
var out1, out2 util.Uint160
assert.NoError(t, params.TryParseArray(&out1, &out2))
assert.Equal(t, exp1, out1)
assert.Equal(t, exp2, out2)
})
}
func TestParamType_String(t *testing.T) {
types := []ParamType{
SignatureType,
BoolType,
IntegerType,
Hash160Type,
Hash256Type,
ByteArrayType,
PublicKeyType,
StringType,
ArrayType,
InteropInterfaceType,
MapType,
VoidType,
}
for _, exp := range types {
actual, err := ParseParamType(exp.String())
assert.NoError(t, err)
assert.Equal(t, exp, actual)
}
actual, err := ParseParamType(UnknownType.String())
assert.Error(t, err)
assert.Equal(t, UnknownType, actual)
}
func TestNewParameterFromString(t *testing.T) {
@ -330,6 +404,12 @@ func TestNewParameterFromString(t *testing.T) {
}, {
in: `bool:asdf`,
err: true,
}, {
in: `InteropInterface:123`,
err: true,
}, {
in: `Map:[]`,
err: true,
}}
for _, inout := range inouts {
out, err := NewParameterFromString(inout.in)

269
pkg/smartcontract/param_type.go Normal file
View file

@ -0,0 +1,269 @@
package smartcontract
import (
"encoding/hex"
"encoding/json"
"strconv"
"strings"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/encoding/address"
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/pkg/errors"
)
// ParamType represents the Type of the smart contract parameter.
type ParamType int
// A list of supported smart contract parameter types.
const (
UnknownType ParamType = -1
SignatureType ParamType = 0x00
BoolType ParamType = 0x01
IntegerType ParamType = 0x02
Hash160Type ParamType = 0x03
Hash256Type ParamType = 0x04
ByteArrayType ParamType = 0x05
PublicKeyType ParamType = 0x06
StringType ParamType = 0x07
ArrayType ParamType = 0x10
MapType ParamType = 0x12
InteropInterfaceType ParamType = 0xf0
VoidType ParamType = 0xff
)
// String implements the stringer interface.
func (pt ParamType) String() string {
switch pt {
case SignatureType:
return "Signature"
case BoolType:
return "Boolean"
case IntegerType:
return "Integer"
case Hash160Type:
return "Hash160"
case Hash256Type:
return "Hash256"
case ByteArrayType:
return "ByteArray"
case PublicKeyType:
return "PublicKey"
case StringType:
return "String"
case ArrayType:
return "Array"
case MapType:
return "Map"
case InteropInterfaceType:
return "InteropInterface"
case VoidType:
return "Void"
default:
return ""
}
}
// MarshalJSON implements the json.Marshaler interface.
func (pt ParamType) MarshalJSON() ([]byte, error) {
return []byte(`"` + pt.String() + `"`), nil
}
// UnmarshalJSON implements json.Unmarshaler interface.
func (pt *ParamType) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
p, err := ParseParamType(s)
if err != nil {
return err
}
*pt = p
return nil
}
// MarshalYAML implements the YAML Marshaler interface.
func (pt *ParamType) MarshalYAML() (interface{}, error) {
return pt.String(), nil
}
// UnmarshalYAML implements the YAML Unmarshaler interface.
func (pt *ParamType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var name string
err := unmarshal(&name)
if err != nil {
return err
}
*pt, err = ParseParamType(name)
return err
}
// EncodeBinary implements io.Serializable interface.
func (pt ParamType) EncodeBinary(w *io.BinWriter) {
w.WriteB(byte(pt))
}
// DecodeBinary implements io.Serializable interface.
func (pt *ParamType) DecodeBinary(r *io.BinReader) {
*pt = ParamType(r.ReadB())
}
// ParseParamType is a user-friendly string to ParamType converter, it's
// case-insensitive and makes the following conversions:
// signature -> SignatureType
// bool, boolean -> BoolType
// int, integer -> IntegerType
// hash160 -> Hash160Type
// hash256 -> Hash256Type
// bytes, bytearray -> ByteArrayType
// key, publickey -> PublicKeyType
// string -> StringType
// array -> ArrayType
// map -> MapType
// interopinterface -> InteropInterfaceType
// void -> VoidType
// anything else generates an error.
func ParseParamType(typ string) (ParamType, error) {
switch strings.ToLower(typ) {
case "signature":
return SignatureType, nil
case "bool", "boolean":
return BoolType, nil
case "int", "integer":
return IntegerType, nil
case "hash160":
return Hash160Type, nil
case "hash256":
return Hash256Type, nil
case "bytes", "bytearray":
return ByteArrayType, nil
case "key", "publickey":
return PublicKeyType, nil
case "string":
return StringType, nil
case "array":
return ArrayType, nil
case "map":
return MapType, nil
case "interopinterface":
return InteropInterfaceType, nil
case "void":
return VoidType, nil
default:
return UnknownType, errors.Errorf("Unknown contract parameter type: %s", typ)
}
}
// adjustValToType is a value type-checker and converter.
func adjustValToType(typ ParamType, val string) (interface{}, error) {
switch typ {
case SignatureType:
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
if len(b) != 64 {
return nil, errors.New("not a signature")
}
return val, nil
case BoolType:
switch val {
case "true":
return true, nil
case "false":
return false, nil
default:
return nil, errors.New("invalid boolean value")
}
case IntegerType:
return strconv.Atoi(val)
case Hash160Type:
u, err := address.StringToUint160(val)
if err == nil {
return hex.EncodeToString(u.BytesBE()), nil
}
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
if len(b) != 20 {
return nil, errors.New("not a hash160")
}
return val, nil
case Hash256Type:
b, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
if len(b) != 32 {
return nil, errors.New("not a hash256")
}
return val, nil
case ByteArrayType:
_, err := hex.DecodeString(val)
if err != nil {
return nil, err
}
return val, nil
case PublicKeyType:
_, err := keys.NewPublicKeyFromString(val)
if err != nil {
return nil, err
}
return val, nil
case StringType:
return val, nil
default:
return nil, errors.New("unsupported parameter type")
}
}
// inferParamType tries to infer the value type from its contents. It returns
// IntegerType for anything that looks like decimal integer (can be converted
// with strconv.Atoi), BoolType for true and false values, Hash160Type for
// addresses and hex strings encoding 20 bytes long values, PublicKeyType for
// valid hex-encoded public keys, Hash256Type for hex-encoded 32 bytes values,
// SignatureType for hex-encoded 64 bytes values, ByteArrayType for any other
// valid hex-encoded values and StringType for anything else.
func inferParamType(val string) ParamType {
var err error
_, err = strconv.Atoi(val)
if err == nil {
return IntegerType
}
if val == "true" || val == "false" {
return BoolType
}
_, err = address.StringToUint160(val)
if err == nil {
return Hash160Type
}
_, err = keys.NewPublicKeyFromString(val)
if err == nil {
return PublicKeyType
}
unhexed, err := hex.DecodeString(val)
if err == nil {
switch len(unhexed) {
case 20:
return Hash160Type
case 32:
return Hash256Type
case 64:
return SignatureType
default:
return ByteArrayType
}
}
// Anything can be a string.
return StringType
}

298
pkg/smartcontract/param_type_test.go Normal file
View file

@ -0,0 +1,298 @@
package smartcontract
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestParseParamType(t *testing.T) {
var inouts = []struct {
in string
out ParamType
err bool
}{{
in: "signature",
out: SignatureType,
}, {
in: "Signature",
out: SignatureType,
}, {
in: "SiGnAtUrE",
out: SignatureType,
}, {
in: "bool",
out: BoolType,
}, {
in: "int",
out: IntegerType,
}, {
in: "hash160",
out: Hash160Type,
}, {
in: "hash256",
out: Hash256Type,
}, {
in: "bytes",
out: ByteArrayType,
}, {
in: "key",
out: PublicKeyType,
}, {
in: "string",
out: StringType,
}, {
in: "array",
out: ArrayType,
}, {
in: "map",
out: MapType,
}, {
in: "interopinterface",
out: InteropInterfaceType,
}, {
in: "void",
out: VoidType,
}, {
in: "qwerty",
err: true,
}}
for _, inout := range inouts {
out, err := ParseParamType(inout.in)
if inout.err {
assert.NotNil(t, err, "should error on '%s' input", inout.in)
} else {
assert.Nil(t, err, "shouldn't error on '%s' input", inout.in)
assert.Equal(t, inout.out, out, "bad output for '%s' input", inout.in)
}
}
}
func TestInferParamType(t *testing.T) {
var inouts = []struct {
in string
out ParamType
}{{
in: "42",
out: IntegerType,
}, {
in: "-42",
out: IntegerType,
}, {
in: "0",
out: IntegerType,
}, {
in: "2e10",
out: ByteArrayType,
}, {
in: "true",
out: BoolType,
}, {
in: "false",
out: BoolType,
}, {
in: "truee",
out: StringType,
}, {
in: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: Hash160Type,
}, {
in: "ZK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: StringType,
}, {
in: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: Hash160Type,
}, {
in: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: PublicKeyType,
}, {
in: "30b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: ByteArrayType,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: Hash256Type,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7da",
out: ByteArrayType,
}, {
in: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
out: SignatureType,
}, {
in: "qwerty",
out: StringType,
}, {
in: "ab",
out: ByteArrayType,
}, {
in: "az",
out: StringType,
}, {
in: "bad",
out: StringType,
}, {
in: "фыва",
out: StringType,
}, {
in: "dead",
out: ByteArrayType,
}}
for _, inout := range inouts {
out := inferParamType(inout.in)
assert.Equal(t, inout.out, out, "bad output for '%s' input", inout.in)
}
}
func TestAdjustValToType(t *testing.T) {
var inouts = []struct {
typ ParamType
val string
out interface{}
err bool
}{{
typ: SignatureType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
}, {
typ: SignatureType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c",
err: true,
}, {
typ: SignatureType,
val: "qwerty",
err: true,
}, {
typ: BoolType,
val: "false",
out: false,
}, {
typ: BoolType,
val: "true",
out: true,
}, {
typ: BoolType,
val: "qwerty",
err: true,
}, {
typ: BoolType,
val: "42",
err: true,
}, {
typ: BoolType,
val: "0",
err: true,
}, {
typ: IntegerType,
val: "0",
out: 0,
}, {
typ: IntegerType,
val: "42",
out: 42,
}, {
typ: IntegerType,
val: "-42",
out: -42,
}, {
typ: IntegerType,
val: "q",
err: true,
}, {
typ: Hash160Type,
val: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
out: "23ba2703c53263e8d6e522dc32203339dcd8eee9",
}, {
typ: Hash160Type,
val: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: "50befd26fdf6e4d957c11e078b24ebce6291456f",
}, {
typ: Hash160Type,
val: "befd26fdf6e4d957c11e078b24ebce6291456f",
err: true,
}, {
typ: Hash160Type,
val: "q",
err: true,
}, {
typ: Hash256Type,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
}, {
typ: Hash256Type,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
err: true,
}, {
typ: Hash256Type,
val: "q",
err: true,
}, {
typ: ByteArrayType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282d",
}, {
typ: ByteArrayType,
val: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
out: "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
}, {
typ: ByteArrayType,
val: "50befd26fdf6e4d957c11e078b24ebce6291456f",
out: "50befd26fdf6e4d957c11e078b24ebce6291456f",
}, {
typ: ByteArrayType,
val: "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y",
err: true,
}, {
typ: ByteArrayType,
val: "q",
err: true,
}, {
typ: ByteArrayType,
val: "ab",
out: "ab",
}, {
typ: PublicKeyType,
val: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
out: "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
}, {
typ: PublicKeyType,
val: "01b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c",
err: true,
}, {
typ: PublicKeyType,
val: "q",
err: true,
}, {
typ: StringType,
val: "q",
out: "q",
}, {
typ: StringType,
val: "dead",
out: "dead",
}, {
typ: StringType,
val: "йцукен",
out: "йцукен",
}, {
typ: ArrayType,
val: "",
err: true,
}, {
typ: MapType,
val: "[]",
err: true,
}, {
typ: InteropInterfaceType,
val: "",
err: true,
}}
for _, inout := range inouts {
out, err := adjustValToType(inout.typ, inout.val)
if inout.err {
assert.NotNil(t, err, "should error on '%s/%s' input", inout.typ, inout.val)
} else {
assert.Nil(t, err, "shouldn't error on '%s/%s' input", inout.typ, inout.val)
assert.Equal(t, inout.out, out, "bad output for '%s/%s' input", inout.typ, inout.val)
}
}
}

15
pkg/smartcontract/trigger/trigger_type.go
View file

@ -1,13 +1,18 @@
package trigger
// Trigger typed used in C# reference node: https://github.com/neo-project/neo/blob/c64748ecbac3baeb8045b16af0d518398a6ced24/neo/SmartContract/TriggerType.cs#L3
//go:generate stringer -type=Type
// Type represents trigger type used in C# reference node: https://github.com/neo-project/neo/blob/c64748ecbac3baeb8045b16af0d518398a6ced24/neo/SmartContract/TriggerType.cs#L3
type Type byte
// Viable list of supported trigger type constants.
const (
// The verification trigger indicates that the contract is being invoked as a verification function.
// The verification function can accept multiple parameters, and should return a boolean value that indicates the validity of the transaction or block.
// The entry point of the contract will be invoked if the contract is triggered by Verification:
// main(...);
// The entry point of the contract must be able to handle this type of invocation.
Verification = 0x00
Verification Type = 0x00
// The verificationR trigger indicates that the contract is being invoked as a verification function because it is specified as a target of an output of the transaction.
// The verification function accepts no parameter, and should return a boolean value that indicates the validity of the transaction.
@ -16,14 +21,14 @@ const (
// The receiving function should have the following signature:
// public bool receiving()
// The receiving function will be invoked automatically when a contract is receiving assets from a transfer.
VerificationR = 0x01
VerificationR Type = 0x01
// The application trigger indicates that the contract is being invoked as an application function.
// The application function can accept multiple parameters, change the states of the blockchain, and return any type of value.
// The contract can have any form of entry point, but we recommend that all contracts should have the following entry point:
// public byte[] main(string operation, params object[] args)
// The functions can be invoked by creating an InvocationTransaction.
Application = 0x10
Application Type = 0x10
// The ApplicationR trigger indicates that the default function received of the contract is being invoked because it is specified as a target of an output of the transaction.
// The received function accepts no parameter, changes the states of the blockchain, and returns any type of value.
@ -32,5 +37,5 @@ const (
// The received function should have the following signature:
// public byte[] received()
// The received function will be invoked automatically when a contract is receiving assets from a transfer.
ApplicationR = 0x11
ApplicationR Type = 0x11
)

37
pkg/smartcontract/trigger/trigger_type_string.go Normal file
View file

@ -0,0 +1,37 @@
// Code generated by "stringer -type=Type"; DO NOT EDIT.
package trigger
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[Verification-0]
_ = x[VerificationR-1]
_ = x[Application-16]
_ = x[ApplicationR-17]
}
const (
_Type_name_0 = "VerificationVerificationR"
_Type_name_1 = "ApplicationApplicationR"
)
var (
_Type_index_0 = [...]uint8{0, 12, 25}
_Type_index_1 = [...]uint8{0, 11, 23}
)
func (i Type) String() string {
switch {
case i <= 1:
return _Type_name_0[_Type_index_0[i]:_Type_index_0[i+1]]
case 16 <= i && i <= 17:
i -= 16
return _Type_name_1[_Type_index_1[i]:_Type_index_1[i+1]]
default:
return "Type(" + strconv.FormatInt(int64(i), 10) + ")"
}
}

43
pkg/smartcontract/trigger/trigger_type_test.go Normal file
View file

@ -0,0 +1,43 @@
package trigger
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestStringer(t *testing.T) {
tests := map[Type]string{
Application: "Application",
ApplicationR: "ApplicationR",
Verification: "Verification",
VerificationR: "VerificationR",
}
for o, s := range tests {
assert.Equal(t, s, o.String())
}
}
func TestEncodeBynary(t *testing.T) {
tests := map[Type]byte{
Verification: 0x00,
VerificationR: 0x01,
Application: 0x10,
ApplicationR: 0x11,
}
for o, b := range tests {
assert.Equal(t, b, byte(o))
}
}
func TestDecodeBynary(t *testing.T) {
tests := map[Type]byte{
Verification: 0x00,
VerificationR: 0x01,
Application: 0x10,
ApplicationR: 0x11,
}
for o, b := range tests {
assert.Equal(t, o, Type(b))
}
}

6
pkg/vm/context.go
View file

@ -5,6 +5,7 @@ import (
"errors"
"github.com/CityOfZion/neo-go/pkg/crypto/hash"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/CityOfZion/neo-go/pkg/vm/opcode"
)
@ -169,6 +170,11 @@ func (c *Context) Dup() StackItem {
return c
}
// ToContractParameter implements StackItem interface.
func (c *Context) ToContractParameter() smartcontract.Parameter {
panic("Not implemented")
}
func (c *Context) atBreakPoint() bool {
for _, n := range c.breakPoints {
if n == c.ip {

93
pkg/vm/stack_item.go
View file

@ -8,6 +8,7 @@ import (
"math/big"
"reflect"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/vm/emit"
)
@ -17,6 +18,8 @@ type StackItem interface {
Value() interface{}
// Dup duplicates current StackItem.
Dup() StackItem
// ToContractParameter converts StackItem to smartcontract.Parameter
ToContractParameter() smartcontract.Parameter
}
func makeStackItem(v interface{}) StackItem {
@ -115,6 +118,19 @@ func (i *StructItem) Dup() StackItem {
return i
}
// ToContractParameter implements StackItem interface.
func (i *StructItem) ToContractParameter() smartcontract.Parameter {
var value []smartcontract.Parameter
for _, stackItem := range i.value {
parameter := stackItem.ToContractParameter()
value = append(value, parameter)
}
return smartcontract.Parameter{
Type: smartcontract.ArrayType,
Value: value,
}
}
// Clone returns a Struct with all Struct fields copied by value.
// Array fields are still copied by reference.
func (i *StructItem) Clone() *StructItem {
@ -162,6 +178,14 @@ func (i *BigIntegerItem) Dup() StackItem {
return &BigIntegerItem{n.Set(i.value)}
}
// ToContractParameter implements StackItem interface.
func (i *BigIntegerItem) ToContractParameter() smartcontract.Parameter {
return smartcontract.Parameter{
Type: smartcontract.IntegerType,
Value: i.value.Int64(),
}
}
// MarshalJSON implements the json.Marshaler interface.
func (i *BigIntegerItem) MarshalJSON() ([]byte, error) {
return json.Marshal(i.value)
@ -198,6 +222,14 @@ func (i *BoolItem) Dup() StackItem {
return &BoolItem{i.value}
}
// ToContractParameter implements StackItem interface.
func (i *BoolItem) ToContractParameter() smartcontract.Parameter {
return smartcontract.Parameter{
Type: smartcontract.BoolType,
Value: i.value,
}
}
// ByteArrayItem represents a byte array on the stack.
type ByteArrayItem struct {
value []byte
@ -231,6 +263,14 @@ func (i *ByteArrayItem) Dup() StackItem {
return &ByteArrayItem{a}
}
// ToContractParameter implements StackItem interface.
func (i *ByteArrayItem) ToContractParameter() smartcontract.Parameter {
return smartcontract.Parameter{
Type: smartcontract.ByteArrayType,
Value: i.value,
}
}
// ArrayItem represents a new ArrayItem object.
type ArrayItem struct {
value []StackItem
@ -263,6 +303,19 @@ func (i *ArrayItem) Dup() StackItem {
return i
}
// ToContractParameter implements StackItem interface.
func (i *ArrayItem) ToContractParameter() smartcontract.Parameter {
var value []smartcontract.Parameter
for _, stackItem := range i.value {
parameter := stackItem.ToContractParameter()
value = append(value, parameter)
}
return smartcontract.Parameter{
Type: smartcontract.ArrayType,
Value: value,
}
}
// MapItem represents Map object.
type MapItem struct {
value map[interface{}]StackItem
@ -280,7 +333,6 @@ func (i *MapItem) Value() interface{} {
return i.value
}
// MarshalJSON implements the json.Marshaler interface.
func (i *MapItem) String() string {
return "Map"
}
@ -297,6 +349,23 @@ func (i *MapItem) Dup() StackItem {
return i
}
// ToContractParameter implements StackItem interface.
func (i *MapItem) ToContractParameter() smartcontract.Parameter {
value := make(map[smartcontract.Parameter]smartcontract.Parameter)
for key, val := range i.value {
pValue := val.ToContractParameter()
pKey := fromMapKey(key).ToContractParameter()
if pKey.Type == smartcontract.ByteArrayType {
pKey.Value = string(pKey.Value.([]byte))
}
value[pKey] = pValue
}
return smartcontract.Parameter{
Type: smartcontract.MapType,
Value: value,
}
}
// Add adds key-value pair to the map.
func (i *MapItem) Add(key, value StackItem) {
i.value[toMapKey(key)] = value
@ -316,6 +385,20 @@ func toMapKey(key StackItem) interface{} {
}
}
// fromMapKey converts map key to StackItem
func fromMapKey(key interface{}) StackItem {
switch t := key.(type) {
case bool:
return &BoolItem{value: t}
case int64:
return &BigIntegerItem{value: big.NewInt(t)}
case string:
return &ByteArrayItem{value: []byte(t)}
default:
panic("wrong key type")
}
}
// InteropItem represents interop data on the stack.
type InteropItem struct {
value interface{}
@ -344,6 +427,14 @@ func (i *InteropItem) Dup() StackItem {
return i
}
// ToContractParameter implements StackItem interface.
func (i *InteropItem) ToContractParameter() smartcontract.Parameter {
return smartcontract.Parameter{
Type: smartcontract.InteropInterfaceType,
Value: nil,
}
}
// MarshalJSON implements the json.Marshaler interface.
func (i *InteropItem) MarshalJSON() ([]byte, error) {
return json.Marshal(i.value)

91
pkg/vm/stack_item_test.go Normal file
View file

@ -0,0 +1,91 @@
package vm
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
)
var toContractParameterTestCases = []struct {
input StackItem
result smartcontract.Parameter
}{
{
input: NewStructItem([]StackItem{
NewBigIntegerItem(1),
NewBoolItem(true),
}),
result: smartcontract.Parameter{Type: smartcontract.ArrayType, Value: []smartcontract.Parameter{
{Type: smartcontract.IntegerType, Value: int64(1)},
{Type: smartcontract.BoolType, Value: true},
}},
},
{
input: NewBoolItem(false),
result: smartcontract.Parameter{Type: smartcontract.BoolType, Value: false},
},
{
input: NewByteArrayItem([]byte{0x01, 0x02, 0x03}),
result: smartcontract.Parameter{Type: smartcontract.ByteArrayType, Value: []byte{0x01, 0x02, 0x03}},
},
{
input: NewArrayItem([]StackItem{NewBigIntegerItem(2), NewBoolItem(true)}),
result: smartcontract.Parameter{Type: smartcontract.ArrayType, Value: []smartcontract.Parameter{
{Type: smartcontract.IntegerType, Value: int64(2)},
{Type: smartcontract.BoolType, Value: true},
}},
},
{
input: NewInteropItem(nil),
result: smartcontract.Parameter{Type: smartcontract.InteropInterfaceType, Value: nil},
},
{
input: &MapItem{value: map[interface{}]StackItem{
toMapKey(NewBigIntegerItem(1)): NewBoolItem(true),
toMapKey(NewByteArrayItem([]byte("qwerty"))): NewBigIntegerItem(3),
toMapKey(NewBoolItem(true)): NewBoolItem(false),
}},
result: smartcontract.Parameter{
Type: smartcontract.MapType,
Value: map[smartcontract.Parameter]smartcontract.Parameter{
{Type: smartcontract.IntegerType, Value: int64(1)}: {Type: smartcontract.BoolType, Value: true},
{Type: smartcontract.ByteArrayType, Value: "qwerty"}: {Type: smartcontract.IntegerType, Value: int64(3)},
{Type: smartcontract.BoolType, Value: true}: {Type: smartcontract.BoolType, Value: false},
},
},
},
}
func TestToContractParameter(t *testing.T) {
for _, tc := range toContractParameterTestCases {
res := tc.input.ToContractParameter()
assert.Equal(t, res, tc.result)
}
}
var fromMapKeyTestCases = []struct {
input interface{}
result StackItem
}{
{
input: true,
result: NewBoolItem(true),
},
{
input: int64(4),
result: NewBigIntegerItem(4),
},
{
input: "qwerty",
result: NewByteArrayItem([]byte("qwerty")),
},
}
func TestFromMapKey(t *testing.T) {
for _, tc := range fromMapKeyTestCases {
res := fromMapKey(tc.input)
assert.Equal(t, res, tc.result)
}
}