plugeth/tests/state_test_util.go
2021-08-23 12:49:39 +03:00

365 lines
12 KiB
Go

// Copyright 2015 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 tests
import (
"encoding/hex"
"encoding/json"
"fmt"
"math/big"
"strconv"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/state/snapshot"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"golang.org/x/crypto/sha3"
)
// StateTest checks transaction processing without block context.
// See https://github.com/ethereum/EIPs/issues/176 for the test format specification.
type StateTest struct {
json stJSON
}
// StateSubtest selects a specific configuration of a General State Test.
type StateSubtest struct {
Fork string
Index int
}
func (t *StateTest) UnmarshalJSON(in []byte) error {
return json.Unmarshal(in, &t.json)
}
type stJSON struct {
Env stEnv `json:"env"`
Pre core.GenesisAlloc `json:"pre"`
Tx stTransaction `json:"transaction"`
Out hexutil.Bytes `json:"out"`
Post map[string][]stPostState `json:"post"`
}
type stPostState struct {
Root common.UnprefixedHash `json:"hash"`
Logs common.UnprefixedHash `json:"logs"`
TxBytes hexutil.Bytes `json:"txbytes"`
ExpectException string `json:"expectException"`
Indexes struct {
Data int `json:"data"`
Gas int `json:"gas"`
Value int `json:"value"`
}
}
//go:generate gencodec -type stEnv -field-override stEnvMarshaling -out gen_stenv.go
type stEnv struct {
Coinbase common.Address `json:"currentCoinbase" gencodec:"required"`
Difficulty *big.Int `json:"currentDifficulty" gencodec:"required"`
GasLimit uint64 `json:"currentGasLimit" gencodec:"required"`
Number uint64 `json:"currentNumber" gencodec:"required"`
Timestamp uint64 `json:"currentTimestamp" gencodec:"required"`
BaseFee *big.Int `json:"currentBaseFee" gencodec:"optional"`
}
type stEnvMarshaling struct {
Coinbase common.UnprefixedAddress
Difficulty *math.HexOrDecimal256
GasLimit math.HexOrDecimal64
Number math.HexOrDecimal64
Timestamp math.HexOrDecimal64
BaseFee *math.HexOrDecimal256
}
//go:generate gencodec -type stTransaction -field-override stTransactionMarshaling -out gen_sttransaction.go
type stTransaction struct {
GasPrice *big.Int `json:"gasPrice"`
MaxFeePerGas *big.Int `json:"maxFeePerGas"`
MaxPriorityFeePerGas *big.Int `json:"maxPriorityFeePerGas"`
Nonce uint64 `json:"nonce"`
To string `json:"to"`
Data []string `json:"data"`
AccessLists []*types.AccessList `json:"accessLists,omitempty"`
GasLimit []uint64 `json:"gasLimit"`
Value []string `json:"value"`
PrivateKey []byte `json:"secretKey"`
}
type stTransactionMarshaling struct {
GasPrice *math.HexOrDecimal256
MaxFeePerGas *math.HexOrDecimal256
MaxPriorityFeePerGas *math.HexOrDecimal256
Nonce math.HexOrDecimal64
GasLimit []math.HexOrDecimal64
PrivateKey hexutil.Bytes
}
// GetChainConfig takes a fork definition and returns a chain config.
// The fork definition can be
// - a plain forkname, e.g. `Byzantium`,
// - a fork basename, and a list of EIPs to enable; e.g. `Byzantium+1884+1283`.
func GetChainConfig(forkString string) (baseConfig *params.ChainConfig, eips []int, err error) {
var (
splitForks = strings.Split(forkString, "+")
ok bool
baseName, eipsStrings = splitForks[0], splitForks[1:]
)
if baseConfig, ok = Forks[baseName]; !ok {
return nil, nil, UnsupportedForkError{baseName}
}
for _, eip := range eipsStrings {
if eipNum, err := strconv.Atoi(eip); err != nil {
return nil, nil, fmt.Errorf("syntax error, invalid eip number %v", eipNum)
} else {
if !vm.ValidEip(eipNum) {
return nil, nil, fmt.Errorf("syntax error, invalid eip number %v", eipNum)
}
eips = append(eips, eipNum)
}
}
return baseConfig, eips, nil
}
// Subtests returns all valid subtests of the test.
func (t *StateTest) Subtests() []StateSubtest {
var sub []StateSubtest
for fork, pss := range t.json.Post {
for i := range pss {
sub = append(sub, StateSubtest{fork, i})
}
}
return sub
}
// Run executes a specific subtest and verifies the post-state and logs
func (t *StateTest) Run(subtest StateSubtest, vmconfig vm.Config, snapshotter bool) (*snapshot.Tree, *state.StateDB, error) {
snaps, statedb, root, err := t.RunNoVerify(subtest, vmconfig, snapshotter)
if err != nil {
return snaps, statedb, err
}
post := t.json.Post[subtest.Fork][subtest.Index]
// N.B: We need to do this in a two-step process, because the first Commit takes care
// of suicides, and we need to touch the coinbase _after_ it has potentially suicided.
if root != common.Hash(post.Root) {
return snaps, statedb, fmt.Errorf("post state root mismatch: got %x, want %x", root, post.Root)
}
if logs := rlpHash(statedb.Logs()); logs != common.Hash(post.Logs) {
return snaps, statedb, fmt.Errorf("post state logs hash mismatch: got %x, want %x", logs, post.Logs)
}
return snaps, statedb, nil
}
// RunNoVerify runs a specific subtest and returns the statedb and post-state root
func (t *StateTest) RunNoVerify(subtest StateSubtest, vmconfig vm.Config, snapshotter bool) (*snapshot.Tree, *state.StateDB, common.Hash, error) {
config, eips, err := GetChainConfig(subtest.Fork)
if err != nil {
return nil, nil, common.Hash{}, UnsupportedForkError{subtest.Fork}
}
vmconfig.ExtraEips = eips
block := t.genesis(config).ToBlock(nil)
snaps, statedb := MakePreState(rawdb.NewMemoryDatabase(), t.json.Pre, snapshotter)
var baseFee *big.Int
if config.IsLondon(new(big.Int)) {
baseFee = t.json.Env.BaseFee
if baseFee == nil {
// Retesteth uses `0x10` for genesis baseFee. Therefore, it defaults to
// parent - 2 : 0xa as the basefee for 'this' context.
baseFee = big.NewInt(0x0a)
}
}
post := t.json.Post[subtest.Fork][subtest.Index]
msg, err := t.json.Tx.toMessage(post, baseFee)
if err != nil {
return nil, nil, common.Hash{}, err
}
// Try to recover tx with current signer
if len(post.TxBytes) != 0 {
var ttx types.Transaction
err := ttx.UnmarshalBinary(post.TxBytes)
if err != nil {
return nil, nil, common.Hash{}, err
}
if _, err := types.Sender(types.LatestSigner(config), &ttx); err != nil {
return nil, nil, common.Hash{}, err
}
}
// Prepare the EVM.
txContext := core.NewEVMTxContext(msg)
context := core.NewEVMBlockContext(block.Header(), nil, &t.json.Env.Coinbase)
context.GetHash = vmTestBlockHash
context.BaseFee = baseFee
evm := vm.NewEVM(context, txContext, statedb, config, vmconfig)
// Execute the message.
snapshot := statedb.Snapshot()
gaspool := new(core.GasPool)
gaspool.AddGas(block.GasLimit())
if _, err := core.ApplyMessage(evm, msg, gaspool); err != nil {
statedb.RevertToSnapshot(snapshot)
}
// Commit block
statedb.Commit(config.IsEIP158(block.Number()))
// Add 0-value mining reward. This only makes a difference in the cases
// where
// - the coinbase suicided, or
// - there are only 'bad' transactions, which aren't executed. In those cases,
// the coinbase gets no txfee, so isn't created, and thus needs to be touched
statedb.AddBalance(block.Coinbase(), new(big.Int))
// And _now_ get the state root
root := statedb.IntermediateRoot(config.IsEIP158(block.Number()))
return snaps, statedb, root, nil
}
func (t *StateTest) gasLimit(subtest StateSubtest) uint64 {
return t.json.Tx.GasLimit[t.json.Post[subtest.Fork][subtest.Index].Indexes.Gas]
}
func MakePreState(db ethdb.Database, accounts core.GenesisAlloc, snapshotter bool) (*snapshot.Tree, *state.StateDB) {
sdb := state.NewDatabase(db)
statedb, _ := state.New(common.Hash{}, sdb, nil)
for addr, a := range accounts {
statedb.SetCode(addr, a.Code)
statedb.SetNonce(addr, a.Nonce)
statedb.SetBalance(addr, a.Balance)
for k, v := range a.Storage {
statedb.SetState(addr, k, v)
}
}
// Commit and re-open to start with a clean state.
root, _ := statedb.Commit(false)
var snaps *snapshot.Tree
if snapshotter {
snaps, _ = snapshot.New(db, sdb.TrieDB(), 1, root, false, true, false)
}
statedb, _ = state.New(root, sdb, snaps)
return snaps, statedb
}
func (t *StateTest) genesis(config *params.ChainConfig) *core.Genesis {
return &core.Genesis{
Config: config,
Coinbase: t.json.Env.Coinbase,
Difficulty: t.json.Env.Difficulty,
GasLimit: t.json.Env.GasLimit,
Number: t.json.Env.Number,
Timestamp: t.json.Env.Timestamp,
Alloc: t.json.Pre,
}
}
func (tx *stTransaction) toMessage(ps stPostState, baseFee *big.Int) (core.Message, error) {
// Derive sender from private key if present.
var from common.Address
if len(tx.PrivateKey) > 0 {
key, err := crypto.ToECDSA(tx.PrivateKey)
if err != nil {
return nil, fmt.Errorf("invalid private key: %v", err)
}
from = crypto.PubkeyToAddress(key.PublicKey)
}
// Parse recipient if present.
var to *common.Address
if tx.To != "" {
to = new(common.Address)
if err := to.UnmarshalText([]byte(tx.To)); err != nil {
return nil, fmt.Errorf("invalid to address: %v", err)
}
}
// Get values specific to this post state.
if ps.Indexes.Data > len(tx.Data) {
return nil, fmt.Errorf("tx data index %d out of bounds", ps.Indexes.Data)
}
if ps.Indexes.Value > len(tx.Value) {
return nil, fmt.Errorf("tx value index %d out of bounds", ps.Indexes.Value)
}
if ps.Indexes.Gas > len(tx.GasLimit) {
return nil, fmt.Errorf("tx gas limit index %d out of bounds", ps.Indexes.Gas)
}
dataHex := tx.Data[ps.Indexes.Data]
valueHex := tx.Value[ps.Indexes.Value]
gasLimit := tx.GasLimit[ps.Indexes.Gas]
// Value, Data hex encoding is messy: https://github.com/ethereum/tests/issues/203
value := new(big.Int)
if valueHex != "0x" {
v, ok := math.ParseBig256(valueHex)
if !ok {
return nil, fmt.Errorf("invalid tx value %q", valueHex)
}
value = v
}
data, err := hex.DecodeString(strings.TrimPrefix(dataHex, "0x"))
if err != nil {
return nil, fmt.Errorf("invalid tx data %q", dataHex)
}
var accessList types.AccessList
if tx.AccessLists != nil && tx.AccessLists[ps.Indexes.Data] != nil {
accessList = *tx.AccessLists[ps.Indexes.Data]
}
// If baseFee provided, set gasPrice to effectiveGasPrice.
gasPrice := tx.GasPrice
if baseFee != nil {
if tx.MaxFeePerGas == nil {
tx.MaxFeePerGas = gasPrice
}
if tx.MaxFeePerGas == nil {
tx.MaxFeePerGas = new(big.Int)
}
if tx.MaxPriorityFeePerGas == nil {
tx.MaxPriorityFeePerGas = tx.MaxFeePerGas
}
gasPrice = math.BigMin(new(big.Int).Add(tx.MaxPriorityFeePerGas, baseFee),
tx.MaxFeePerGas)
}
if gasPrice == nil {
return nil, fmt.Errorf("no gas price provided")
}
msg := types.NewMessage(from, to, tx.Nonce, value, gasLimit, gasPrice,
tx.MaxFeePerGas, tx.MaxPriorityFeePerGas, data, accessList, false)
return msg, nil
}
func rlpHash(x interface{}) (h common.Hash) {
hw := sha3.NewLegacyKeccak256()
rlp.Encode(hw, x)
hw.Sum(h[:0])
return h
}
func vmTestBlockHash(n uint64) common.Hash {
return common.BytesToHash(crypto.Keccak256([]byte(big.NewInt(int64(n)).String())))
}