forked from cerc-io/plugeth
tests/fuzzers: move fuzzers into native packages (#28467)
This PR moves our fuzzers from tests/fuzzers into whatever their respective 'native' package is. The historical reason why they were placed in an external location, is that when they were based on go-fuzz, they could not be "hidden" via the _test.go prefix. So in order to shove them away from the go-ethereum "production code", they were put aside. But now we've rewritten them to be based on golang testing, and thus can be brought back. I've left (in tests/) the ones that are not production (bls128381), require non-standard imports (secp requires btcec, bn256 requires gnark/google/cloudflare deps). This PR also adds a fuzzer for precompiled contracts, because why not. This PR utilizes a newly rewritten replacement for go-118-fuzz-build, namely gofuzz-shim, which utilises the inputs from the fuzzing engine better.
This commit is contained in:
Martin Holst Swende
@@ -0,0 +1,147 @@
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// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package types
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import (
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"bytes"
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"fmt"
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/holiman/uint256"
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)
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func decodeEncode(input []byte, val interface{}) error {
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if err := rlp.DecodeBytes(input, val); err != nil {
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// not valid rlp, nothing to do
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return nil
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}
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// If it _were_ valid rlp, we can encode it again
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output, err := rlp.EncodeToBytes(val)
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if err != nil {
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return err
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}
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if !bytes.Equal(input, output) {
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return fmt.Errorf("encode-decode is not equal, \ninput : %x\noutput: %x", input, output)
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}
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return nil
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}
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func FuzzRLP(f *testing.F) {
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f.Fuzz(fuzzRlp)
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}
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func fuzzRlp(t *testing.T, input []byte) {
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if len(input) == 0 || len(input) > 500*1024 {
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return
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}
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rlp.Split(input)
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if elems, _, err := rlp.SplitList(input); err == nil {
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rlp.CountValues(elems)
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}
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rlp.NewStream(bytes.NewReader(input), 0).Decode(new(interface{}))
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if err := decodeEncode(input, new(interface{})); err != nil {
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t.Fatal(err)
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}
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{
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var v struct {
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Int uint
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String string
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Bytes []byte
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}
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if err := decodeEncode(input, &v); err != nil {
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t.Fatal(err)
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}
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}
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{
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type Types struct {
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Bool bool
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Raw rlp.RawValue
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Slice []*Types
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Iface []interface{}
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}
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var v Types
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if err := decodeEncode(input, &v); err != nil {
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t.Fatal(err)
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}
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}
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{
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type AllTypes struct {
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Int uint
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String string
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Bytes []byte
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Bool bool
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Raw rlp.RawValue
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Slice []*AllTypes
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Array [3]*AllTypes
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Iface []interface{}
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}
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var v AllTypes
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if err := decodeEncode(input, &v); err != nil {
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t.Fatal(err)
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}
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}
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{
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if err := decodeEncode(input, [10]byte{}); err != nil {
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t.Fatal(err)
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}
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}
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{
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var v struct {
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Byte [10]byte
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Rool [10]bool
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}
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if err := decodeEncode(input, &v); err != nil {
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t.Fatal(err)
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}
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}
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{
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var h Header
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if err := decodeEncode(input, &h); err != nil {
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t.Fatal(err)
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}
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var b Block
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if err := decodeEncode(input, &b); err != nil {
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t.Fatal(err)
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}
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var tx Transaction
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if err := decodeEncode(input, &tx); err != nil {
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t.Fatal(err)
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}
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var txs Transactions
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if err := decodeEncode(input, &txs); err != nil {
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t.Fatal(err)
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}
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var rs Receipts
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if err := decodeEncode(input, &rs); err != nil {
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t.Fatal(err)
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}
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}
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{
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var v struct {
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AnIntPtr *big.Int
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AnInt big.Int
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AnU256Ptr *uint256.Int
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AnU256 uint256.Int
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NotAnU256 [4]uint64
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}
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if err := decodeEncode(input, &v); err != nil {
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t.Fatal(err)
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}
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}
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}
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@@ -0,0 +1,44 @@
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// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"testing"
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"github.com/ethereum/go-ethereum/common"
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)
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func FuzzPrecompiledContracts(f *testing.F) {
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// Create list of addresses
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var addrs []common.Address
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for k := range allPrecompiles {
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addrs = append(addrs, k)
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}
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f.Fuzz(func(t *testing.T, addr uint8, input []byte) {
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a := addrs[int(addr)%len(addrs)]
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p := allPrecompiles[a]
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gas := p.RequiredGas(input)
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if gas > 10_000_000 {
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return
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}
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inWant := string(input)
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RunPrecompiledContract(p, input, gas)
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if inHave := string(input); inWant != inHave {
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t.Errorf("Precompiled %v modified input data", a)
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}
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})
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}
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@@ -0,0 +1,29 @@
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// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package runtime
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import (
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"testing"
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)
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func FuzzVmRuntime(f *testing.F) {
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f.Fuzz(func(t *testing.T, code, input []byte) {
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Execute(code, input, &Config{
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GasLimit: 12000000,
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})
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})
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}
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