818 lines
34 KiB
Go
818 lines
34 KiB
Go
// Copyright 2017 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package abi
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"math/big"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
type unpackTest struct {
|
|
def string // ABI definition JSON
|
|
enc string // evm return data
|
|
want interface{} // the expected output
|
|
err string // empty or error if expected
|
|
}
|
|
|
|
func (test unpackTest) checkError(err error) error {
|
|
if err != nil {
|
|
if len(test.err) == 0 {
|
|
return fmt.Errorf("expected no err but got: %v", err)
|
|
} else if err.Error() != test.err {
|
|
return fmt.Errorf("expected err: '%v' got err: %q", test.err, err)
|
|
}
|
|
} else if len(test.err) > 0 {
|
|
return fmt.Errorf("expected err: %v but got none", test.err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var unpackTests = []unpackTest{
|
|
{
|
|
def: `[{ "type": "bool" }]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: true,
|
|
},
|
|
{
|
|
def: `[{ "type": "bool" }]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000000",
|
|
want: false,
|
|
},
|
|
{
|
|
def: `[{ "type": "bool" }]`,
|
|
enc: "0000000000000000000000000000000000000000000000000001000000000001",
|
|
want: false,
|
|
err: "abi: improperly encoded boolean value",
|
|
},
|
|
{
|
|
def: `[{ "type": "bool" }]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000003",
|
|
want: false,
|
|
err: "abi: improperly encoded boolean value",
|
|
},
|
|
{
|
|
def: `[{"type": "uint32"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: uint32(1),
|
|
},
|
|
{
|
|
def: `[{"type": "uint32"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: uint16(0),
|
|
err: "abi: cannot unmarshal uint32 in to uint16",
|
|
},
|
|
{
|
|
def: `[{"type": "uint17"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: uint16(0),
|
|
err: "abi: cannot unmarshal *big.Int in to uint16",
|
|
},
|
|
{
|
|
def: `[{"type": "uint17"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: big.NewInt(1),
|
|
},
|
|
{
|
|
def: `[{"type": "int32"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: int32(1),
|
|
},
|
|
{
|
|
def: `[{"type": "int32"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: int16(0),
|
|
err: "abi: cannot unmarshal int32 in to int16",
|
|
},
|
|
{
|
|
def: `[{"type": "int17"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: int16(0),
|
|
err: "abi: cannot unmarshal *big.Int in to int16",
|
|
},
|
|
{
|
|
def: `[{"type": "int17"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001",
|
|
want: big.NewInt(1),
|
|
},
|
|
{
|
|
def: `[{"type": "address"}]`,
|
|
enc: "0000000000000000000000000100000000000000000000000000000000000000",
|
|
want: common.Address{1},
|
|
},
|
|
{
|
|
def: `[{"type": "bytes32"}]`,
|
|
enc: "0100000000000000000000000000000000000000000000000000000000000000",
|
|
want: [32]byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
|
},
|
|
{
|
|
def: `[{"type": "bytes"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200100000000000000000000000000000000000000000000000000000000000000",
|
|
want: common.Hex2Bytes("0100000000000000000000000000000000000000000000000000000000000000"),
|
|
},
|
|
{
|
|
def: `[{"type": "bytes"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200100000000000000000000000000000000000000000000000000000000000000",
|
|
want: [32]byte{},
|
|
err: "abi: cannot unmarshal []uint8 in to [32]uint8",
|
|
},
|
|
{
|
|
def: `[{"type": "bytes32"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200100000000000000000000000000000000000000000000000000000000000000",
|
|
want: []byte(nil),
|
|
err: "abi: cannot unmarshal [32]uint8 in to []uint8",
|
|
},
|
|
{
|
|
def: `[{"type": "bytes32"}]`,
|
|
enc: "0100000000000000000000000000000000000000000000000000000000000000",
|
|
want: [32]byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
|
},
|
|
{
|
|
def: `[{"type": "function"}]`,
|
|
enc: "0100000000000000000000000000000000000000000000000000000000000000",
|
|
want: [24]byte{1},
|
|
},
|
|
// slices
|
|
{
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []uint8{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint8[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]uint8{1, 2},
|
|
},
|
|
// multi dimensional, if these pass, all types that don't require length prefix should pass
|
|
{
|
|
def: `[{"type": "uint8[][]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000E0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [][]uint8{{1, 2}, {1, 2}},
|
|
},
|
|
{
|
|
def: `[{"type": "uint8[2][2]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2][2]uint8{{1, 2}, {1, 2}},
|
|
},
|
|
{
|
|
def: `[{"type": "uint8[][2]"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001",
|
|
want: [2][]uint8{{1}, {1}},
|
|
},
|
|
{
|
|
def: `[{"type": "uint8[2][]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [][2]uint8{{1, 2}},
|
|
},
|
|
{
|
|
def: `[{"type": "uint16[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []uint16{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint16[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]uint16{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint32[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []uint32{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint32[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]uint32{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint32[2][3][4]"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000700000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000f000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000110000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000001300000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000000000000000000000000000000000000015000000000000000000000000000000000000000000000000000000000000001600000000000000000000000000000000000000000000000000000000000000170000000000000000000000000000000000000000000000000000000000000018",
|
|
want: [4][3][2]uint32{{{1, 2}, {3, 4}, {5, 6}}, {{7, 8}, {9, 10}, {11, 12}}, {{13, 14}, {15, 16}, {17, 18}}, {{19, 20}, {21, 22}, {23, 24}}},
|
|
},
|
|
{
|
|
def: `[{"type": "uint64[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []uint64{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint64[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]uint64{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "uint256[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []*big.Int{big.NewInt(1), big.NewInt(2)},
|
|
},
|
|
{
|
|
def: `[{"type": "uint256[3]"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003",
|
|
want: [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)},
|
|
},
|
|
{
|
|
def: `[{"type": "int8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []int8{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int8[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]int8{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int16[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []int16{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int16[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]int16{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int32[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []int32{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int32[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]int32{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int64[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []int64{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int64[2]"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: [2]int64{1, 2},
|
|
},
|
|
{
|
|
def: `[{"type": "int256[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: []*big.Int{big.NewInt(1), big.NewInt(2)},
|
|
},
|
|
{
|
|
def: `[{"type": "int256[3]"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003",
|
|
want: [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)},
|
|
},
|
|
// struct outputs
|
|
{
|
|
def: `[{"name":"int1","type":"int256"},{"name":"int2","type":"int256"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: struct {
|
|
Int1 *big.Int
|
|
Int2 *big.Int
|
|
}{big.NewInt(1), big.NewInt(2)},
|
|
},
|
|
{
|
|
def: `[{"name":"int","type":"int256"},{"name":"Int","type":"int256"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: struct {
|
|
Int1 *big.Int
|
|
Int2 *big.Int
|
|
}{},
|
|
err: "abi: multiple outputs mapping to the same struct field 'Int'",
|
|
},
|
|
{
|
|
def: `[{"name":"int","type":"int256"},{"name":"_int","type":"int256"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: struct {
|
|
Int1 *big.Int
|
|
Int2 *big.Int
|
|
}{},
|
|
err: "abi: multiple outputs mapping to the same struct field 'Int'",
|
|
},
|
|
{
|
|
def: `[{"name":"Int","type":"int256"},{"name":"_int","type":"int256"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: struct {
|
|
Int1 *big.Int
|
|
Int2 *big.Int
|
|
}{},
|
|
err: "abi: multiple outputs mapping to the same struct field 'Int'",
|
|
},
|
|
{
|
|
def: `[{"name":"Int","type":"int256"},{"name":"_","type":"int256"}]`,
|
|
enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002",
|
|
want: struct {
|
|
Int1 *big.Int
|
|
Int2 *big.Int
|
|
}{},
|
|
err: "abi: purely underscored output cannot unpack to struct",
|
|
},
|
|
}
|
|
|
|
func TestUnpack(t *testing.T) {
|
|
for i, test := range unpackTests {
|
|
t.Run(strconv.Itoa(i), func(t *testing.T) {
|
|
def := fmt.Sprintf(`[{ "name" : "method", "outputs": %s}]`, test.def)
|
|
abi, err := JSON(strings.NewReader(def))
|
|
if err != nil {
|
|
t.Fatalf("invalid ABI definition %s: %v", def, err)
|
|
}
|
|
encb, err := hex.DecodeString(test.enc)
|
|
if err != nil {
|
|
t.Fatalf("invalid hex: %s" + test.enc)
|
|
}
|
|
outptr := reflect.New(reflect.TypeOf(test.want))
|
|
err = abi.Unpack(outptr.Interface(), "method", encb)
|
|
if err := test.checkError(err); err != nil {
|
|
t.Errorf("test %d (%v) failed: %v", i, test.def, err)
|
|
return
|
|
}
|
|
out := outptr.Elem().Interface()
|
|
if !reflect.DeepEqual(test.want, out) {
|
|
t.Errorf("test %d (%v) failed: expected %v, got %v", i, test.def, test.want, out)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
type methodMultiOutput struct {
|
|
Int *big.Int
|
|
String string
|
|
}
|
|
|
|
func methodMultiReturn(require *require.Assertions) (ABI, []byte, methodMultiOutput) {
|
|
const definition = `[
|
|
{ "name" : "multi", "constant" : false, "outputs": [ { "name": "Int", "type": "uint256" }, { "name": "String", "type": "string" } ] }]`
|
|
var expected = methodMultiOutput{big.NewInt(1), "hello"}
|
|
|
|
abi, err := JSON(strings.NewReader(definition))
|
|
require.NoError(err)
|
|
// using buff to make the code readable
|
|
buff := new(bytes.Buffer)
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000005"))
|
|
buff.Write(common.RightPadBytes([]byte(expected.String), 32))
|
|
return abi, buff.Bytes(), expected
|
|
}
|
|
|
|
func TestMethodMultiReturn(t *testing.T) {
|
|
type reversed struct {
|
|
String string
|
|
Int *big.Int
|
|
}
|
|
|
|
abi, data, expected := methodMultiReturn(require.New(t))
|
|
bigint := new(big.Int)
|
|
var testCases = []struct {
|
|
dest interface{}
|
|
expected interface{}
|
|
error string
|
|
name string
|
|
}{{
|
|
&methodMultiOutput{},
|
|
&expected,
|
|
"",
|
|
"Can unpack into structure",
|
|
}, {
|
|
&reversed{},
|
|
&reversed{expected.String, expected.Int},
|
|
"",
|
|
"Can unpack into reversed structure",
|
|
}, {
|
|
&[]interface{}{&bigint, new(string)},
|
|
&[]interface{}{&expected.Int, &expected.String},
|
|
"",
|
|
"Can unpack into a slice",
|
|
}, {
|
|
&[2]interface{}{&bigint, new(string)},
|
|
&[2]interface{}{&expected.Int, &expected.String},
|
|
"",
|
|
"Can unpack into an array",
|
|
}, {
|
|
&[]interface{}{new(int), new(int)},
|
|
&[]interface{}{&expected.Int, &expected.String},
|
|
"abi: cannot unmarshal *big.Int in to int",
|
|
"Can not unpack into a slice with wrong types",
|
|
}, {
|
|
&[]interface{}{new(int)},
|
|
&[]interface{}{},
|
|
"abi: insufficient number of elements in the list/array for unpack, want 2, got 1",
|
|
"Can not unpack into a slice with wrong types",
|
|
}}
|
|
for _, tc := range testCases {
|
|
tc := tc
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
require := require.New(t)
|
|
err := abi.Unpack(tc.dest, "multi", data)
|
|
if tc.error == "" {
|
|
require.Nil(err, "Should be able to unpack method outputs.")
|
|
require.Equal(tc.expected, tc.dest)
|
|
} else {
|
|
require.EqualError(err, tc.error)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestMultiReturnWithArray(t *testing.T) {
|
|
const definition = `[{"name" : "multi", "outputs": [{"type": "uint64[3]"}, {"type": "uint64"}]}]`
|
|
abi, err := JSON(strings.NewReader(definition))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
buff := new(bytes.Buffer)
|
|
buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000000900000000000000000000000000000000000000000000000000000000000000090000000000000000000000000000000000000000000000000000000000000009"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000008"))
|
|
|
|
ret1, ret1Exp := new([3]uint64), [3]uint64{9, 9, 9}
|
|
ret2, ret2Exp := new(uint64), uint64(8)
|
|
if err := abi.Unpack(&[]interface{}{ret1, ret2}, "multi", buff.Bytes()); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(*ret1, ret1Exp) {
|
|
t.Error("array result", *ret1, "!= Expected", ret1Exp)
|
|
}
|
|
if *ret2 != ret2Exp {
|
|
t.Error("int result", *ret2, "!= Expected", ret2Exp)
|
|
}
|
|
}
|
|
|
|
func TestMultiReturnWithDeeplyNestedArray(t *testing.T) {
|
|
// Similar to TestMultiReturnWithArray, but with a special case in mind:
|
|
// values of nested static arrays count towards the size as well, and any element following
|
|
// after such nested array argument should be read with the correct offset,
|
|
// so that it does not read content from the previous array argument.
|
|
const definition = `[{"name" : "multi", "outputs": [{"type": "uint64[3][2][4]"}, {"type": "uint64"}]}]`
|
|
abi, err := JSON(strings.NewReader(definition))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
buff := new(bytes.Buffer)
|
|
// construct the test array, each 3 char element is joined with 61 '0' chars,
|
|
// to from the ((3 + 61) * 0.5) = 32 byte elements in the array.
|
|
buff.Write(common.Hex2Bytes(strings.Join([]string{
|
|
"", //empty, to apply the 61-char separator to the first element as well.
|
|
"111", "112", "113", "121", "122", "123",
|
|
"211", "212", "213", "221", "222", "223",
|
|
"311", "312", "313", "321", "322", "323",
|
|
"411", "412", "413", "421", "422", "423",
|
|
}, "0000000000000000000000000000000000000000000000000000000000000")))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000009876"))
|
|
|
|
ret1, ret1Exp := new([4][2][3]uint64), [4][2][3]uint64{
|
|
{{0x111, 0x112, 0x113}, {0x121, 0x122, 0x123}},
|
|
{{0x211, 0x212, 0x213}, {0x221, 0x222, 0x223}},
|
|
{{0x311, 0x312, 0x313}, {0x321, 0x322, 0x323}},
|
|
{{0x411, 0x412, 0x413}, {0x421, 0x422, 0x423}},
|
|
}
|
|
ret2, ret2Exp := new(uint64), uint64(0x9876)
|
|
if err := abi.Unpack(&[]interface{}{ret1, ret2}, "multi", buff.Bytes()); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(*ret1, ret1Exp) {
|
|
t.Error("array result", *ret1, "!= Expected", ret1Exp)
|
|
}
|
|
if *ret2 != ret2Exp {
|
|
t.Error("int result", *ret2, "!= Expected", ret2Exp)
|
|
}
|
|
}
|
|
|
|
func TestUnmarshal(t *testing.T) {
|
|
const definition = `[
|
|
{ "name" : "int", "constant" : false, "outputs": [ { "type": "uint256" } ] },
|
|
{ "name" : "bool", "constant" : false, "outputs": [ { "type": "bool" } ] },
|
|
{ "name" : "bytes", "constant" : false, "outputs": [ { "type": "bytes" } ] },
|
|
{ "name" : "fixed", "constant" : false, "outputs": [ { "type": "bytes32" } ] },
|
|
{ "name" : "multi", "constant" : false, "outputs": [ { "type": "bytes" }, { "type": "bytes" } ] },
|
|
{ "name" : "intArraySingle", "constant" : false, "outputs": [ { "type": "uint256[3]" } ] },
|
|
{ "name" : "addressSliceSingle", "constant" : false, "outputs": [ { "type": "address[]" } ] },
|
|
{ "name" : "addressSliceDouble", "constant" : false, "outputs": [ { "name": "a", "type": "address[]" }, { "name": "b", "type": "address[]" } ] },
|
|
{ "name" : "mixedBytes", "constant" : true, "outputs": [ { "name": "a", "type": "bytes" }, { "name": "b", "type": "bytes32" } ] }]`
|
|
|
|
abi, err := JSON(strings.NewReader(definition))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
buff := new(bytes.Buffer)
|
|
|
|
// marshall mixed bytes (mixedBytes)
|
|
p0, p0Exp := []byte{}, common.Hex2Bytes("01020000000000000000")
|
|
p1, p1Exp := [32]byte{}, common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000ddeeff")
|
|
mixedBytes := []interface{}{&p0, &p1}
|
|
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000ddeeff"))
|
|
buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000000a"))
|
|
buff.Write(common.Hex2Bytes("0102000000000000000000000000000000000000000000000000000000000000"))
|
|
|
|
err = abi.Unpack(&mixedBytes, "mixedBytes", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
} else {
|
|
if !bytes.Equal(p0, p0Exp) {
|
|
t.Errorf("unexpected value unpacked: want %x, got %x", p0Exp, p0)
|
|
}
|
|
|
|
if !bytes.Equal(p1[:], p1Exp) {
|
|
t.Errorf("unexpected value unpacked: want %x, got %x", p1Exp, p1)
|
|
}
|
|
}
|
|
|
|
// marshal int
|
|
var Int *big.Int
|
|
err = abi.Unpack(&Int, "int", common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if Int == nil || Int.Cmp(big.NewInt(1)) != 0 {
|
|
t.Error("expected Int to be 1 got", Int)
|
|
}
|
|
|
|
// marshal bool
|
|
var Bool bool
|
|
err = abi.Unpack(&Bool, "bool", common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if !Bool {
|
|
t.Error("expected Bool to be true")
|
|
}
|
|
|
|
// marshal dynamic bytes max length 32
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
bytesOut := common.RightPadBytes([]byte("hello"), 32)
|
|
buff.Write(bytesOut)
|
|
|
|
var Bytes []byte
|
|
err = abi.Unpack(&Bytes, "bytes", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if !bytes.Equal(Bytes, bytesOut) {
|
|
t.Errorf("expected %x got %x", bytesOut, Bytes)
|
|
}
|
|
|
|
// marshall dynamic bytes max length 64
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040"))
|
|
bytesOut = common.RightPadBytes([]byte("hello"), 64)
|
|
buff.Write(bytesOut)
|
|
|
|
err = abi.Unpack(&Bytes, "bytes", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if !bytes.Equal(Bytes, bytesOut) {
|
|
t.Errorf("expected %x got %x", bytesOut, Bytes)
|
|
}
|
|
|
|
// marshall dynamic bytes max length 64
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000003f"))
|
|
bytesOut = common.RightPadBytes([]byte("hello"), 64)
|
|
buff.Write(bytesOut)
|
|
|
|
err = abi.Unpack(&Bytes, "bytes", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if !bytes.Equal(Bytes, bytesOut[:len(bytesOut)-1]) {
|
|
t.Errorf("expected %x got %x", bytesOut[:len(bytesOut)-1], Bytes)
|
|
}
|
|
|
|
// marshal dynamic bytes output empty
|
|
err = abi.Unpack(&Bytes, "bytes", nil)
|
|
if err == nil {
|
|
t.Error("expected error")
|
|
}
|
|
|
|
// marshal dynamic bytes length 5
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000005"))
|
|
buff.Write(common.RightPadBytes([]byte("hello"), 32))
|
|
|
|
err = abi.Unpack(&Bytes, "bytes", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if !bytes.Equal(Bytes, []byte("hello")) {
|
|
t.Errorf("expected %x got %x", bytesOut, Bytes)
|
|
}
|
|
|
|
// marshal dynamic bytes length 5
|
|
buff.Reset()
|
|
buff.Write(common.RightPadBytes([]byte("hello"), 32))
|
|
|
|
var hash common.Hash
|
|
err = abi.Unpack(&hash, "fixed", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
helloHash := common.BytesToHash(common.RightPadBytes([]byte("hello"), 32))
|
|
if hash != helloHash {
|
|
t.Errorf("Expected %x to equal %x", hash, helloHash)
|
|
}
|
|
|
|
// marshal error
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020"))
|
|
err = abi.Unpack(&Bytes, "bytes", buff.Bytes())
|
|
if err == nil {
|
|
t.Error("expected error")
|
|
}
|
|
|
|
err = abi.Unpack(&Bytes, "multi", make([]byte, 64))
|
|
if err == nil {
|
|
t.Error("expected error")
|
|
}
|
|
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000003"))
|
|
// marshal int array
|
|
var intArray [3]*big.Int
|
|
err = abi.Unpack(&intArray, "intArraySingle", buff.Bytes())
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
var testAgainstIntArray [3]*big.Int
|
|
testAgainstIntArray[0] = big.NewInt(1)
|
|
testAgainstIntArray[1] = big.NewInt(2)
|
|
testAgainstIntArray[2] = big.NewInt(3)
|
|
|
|
for i, Int := range intArray {
|
|
if Int.Cmp(testAgainstIntArray[i]) != 0 {
|
|
t.Errorf("expected %v, got %v", testAgainstIntArray[i], Int)
|
|
}
|
|
}
|
|
// marshal address slice
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) // offset
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000"))
|
|
|
|
var outAddr []common.Address
|
|
err = abi.Unpack(&outAddr, "addressSliceSingle", buff.Bytes())
|
|
if err != nil {
|
|
t.Fatal("didn't expect error:", err)
|
|
}
|
|
|
|
if len(outAddr) != 1 {
|
|
t.Fatal("expected 1 item, got", len(outAddr))
|
|
}
|
|
|
|
if outAddr[0] != (common.Address{1}) {
|
|
t.Errorf("expected %x, got %x", common.Address{1}, outAddr[0])
|
|
}
|
|
|
|
// marshal multiple address slice
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) // offset
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000080")) // offset
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // size
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000200000000000000000000000000000000000000"))
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000300000000000000000000000000000000000000"))
|
|
|
|
var outAddrStruct struct {
|
|
A []common.Address
|
|
B []common.Address
|
|
}
|
|
err = abi.Unpack(&outAddrStruct, "addressSliceDouble", buff.Bytes())
|
|
if err != nil {
|
|
t.Fatal("didn't expect error:", err)
|
|
}
|
|
|
|
if len(outAddrStruct.A) != 1 {
|
|
t.Fatal("expected 1 item, got", len(outAddrStruct.A))
|
|
}
|
|
|
|
if outAddrStruct.A[0] != (common.Address{1}) {
|
|
t.Errorf("expected %x, got %x", common.Address{1}, outAddrStruct.A[0])
|
|
}
|
|
|
|
if len(outAddrStruct.B) != 2 {
|
|
t.Fatal("expected 1 item, got", len(outAddrStruct.B))
|
|
}
|
|
|
|
if outAddrStruct.B[0] != (common.Address{2}) {
|
|
t.Errorf("expected %x, got %x", common.Address{2}, outAddrStruct.B[0])
|
|
}
|
|
if outAddrStruct.B[1] != (common.Address{3}) {
|
|
t.Errorf("expected %x, got %x", common.Address{3}, outAddrStruct.B[1])
|
|
}
|
|
|
|
// marshal invalid address slice
|
|
buff.Reset()
|
|
buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000100"))
|
|
|
|
err = abi.Unpack(&outAddr, "addressSliceSingle", buff.Bytes())
|
|
if err == nil {
|
|
t.Fatal("expected error:", err)
|
|
}
|
|
}
|
|
|
|
func TestOOMMaliciousInput(t *testing.T) {
|
|
oomTests := []unpackTest{
|
|
{
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset
|
|
"0000000000000000000000000000000000000000000000000000000000000003" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
{ // Length larger than 64 bits
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset
|
|
"00ffffffffffffffffffffffffffffffffffffffffffffff0000000000000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
{ // Offset very large (over 64 bits)
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "00ffffffffffffffffffffffffffffffffffffffffffffff0000000000000020" + // offset
|
|
"0000000000000000000000000000000000000000000000000000000000000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
{ // Offset very large (below 64 bits)
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000007ffffffffff00020" + // offset
|
|
"0000000000000000000000000000000000000000000000000000000000000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
{ // Offset negative (as 64 bit)
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "000000000000000000000000000000000000000000000000f000000000000020" + // offset
|
|
"0000000000000000000000000000000000000000000000000000000000000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
|
|
{ // Negative length
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset
|
|
"000000000000000000000000000000000000000000000000f000000000000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
{ // Very large length
|
|
def: `[{"type": "uint8[]"}]`,
|
|
enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset
|
|
"0000000000000000000000000000000000000000000000007fffffffff000002" + // num elems
|
|
"0000000000000000000000000000000000000000000000000000000000000001" + // elem 1
|
|
"0000000000000000000000000000000000000000000000000000000000000002", // elem 2
|
|
},
|
|
}
|
|
for i, test := range oomTests {
|
|
def := fmt.Sprintf(`[{ "name" : "method", "outputs": %s}]`, test.def)
|
|
abi, err := JSON(strings.NewReader(def))
|
|
if err != nil {
|
|
t.Fatalf("invalid ABI definition %s: %v", def, err)
|
|
}
|
|
encb, err := hex.DecodeString(test.enc)
|
|
if err != nil {
|
|
t.Fatalf("invalid hex: %s" + test.enc)
|
|
}
|
|
_, err = abi.Methods["method"].Outputs.UnpackValues(encb)
|
|
if err == nil {
|
|
t.Fatalf("Expected error on malicious input, test %d", i)
|
|
}
|
|
}
|
|
}
|