plugeth/tests/fuzzers/rlp/rlp_fuzzer.go

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// Copyright 2019 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 rlp
import (
"bytes"
"fmt"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/rlp"
)
func decodeEncode(input []byte, val interface{}, i int) {
if err := rlp.DecodeBytes(input, val); err == nil {
output, err := rlp.EncodeToBytes(val)
if err != nil {
panic(err)
}
if !bytes.Equal(input, output) {
panic(fmt.Sprintf("case %d: encode-decode is not equal, \ninput : %x\noutput: %x", i, input, output))
}
}
}
func Fuzz(input []byte) int {
if len(input) == 0 {
return 0
}
if len(input) > 500*1024 {
return 0
}
var i int
{
rlp.Split(input)
}
{
if elems, _, err := rlp.SplitList(input); err == nil {
rlp.CountValues(elems)
}
}
{
rlp.NewStream(bytes.NewReader(input), 0).Decode(new(interface{}))
}
{
decodeEncode(input, new(interface{}), i)
i++
}
{
var v struct {
Int uint
String string
Bytes []byte
}
decodeEncode(input, &v, i)
i++
}
{
type Types struct {
Bool bool
Raw rlp.RawValue
Slice []*Types
Iface []interface{}
}
var v Types
decodeEncode(input, &v, i)
i++
}
{
type AllTypes struct {
Int uint
String string
Bytes []byte
Bool bool
Raw rlp.RawValue
Slice []*AllTypes
Array [3]*AllTypes
Iface []interface{}
}
var v AllTypes
decodeEncode(input, &v, i)
i++
}
{
decodeEncode(input, [10]byte{}, i)
i++
}
{
var v struct {
Byte [10]byte
Rool [10]bool
}
decodeEncode(input, &v, i)
i++
}
{
var h types.Header
decodeEncode(input, &h, i)
i++
var b types.Block
decodeEncode(input, &b, i)
i++
var t types.Transaction
decodeEncode(input, &t, i)
i++
var txs types.Transactions
decodeEncode(input, &txs, i)
i++
var rs types.Receipts
decodeEncode(input, &rs, i)
}
return 1
}