mirror of https://github.com/status-im/op-geth.git
cmd/evm: add --prestate, --sender, --json flags for fuzzing (#14476)
This commit is contained in:
Martin Holst Swende
Felix Lange
parent
bc24b7a912
commit
80f7c6c299
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@ -0,0 +1,60 @@
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// Copyright 2017 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 main
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import (
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"encoding/json"
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"io"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core/vm"
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)
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type JSONLogger struct {
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encoder *json.Encoder
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}
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func NewJSONLogger(writer io.Writer) *JSONLogger {
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return &JSONLogger{json.NewEncoder(writer)}
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}
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// CaptureState outputs state information on the logger.
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func (l *JSONLogger) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
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return l.encoder.Encode(vm.StructLog{
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Pc: pc,
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Op: op,
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Gas: gas + cost,
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GasCost: cost,
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Memory: memory.Data(),
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Stack: stack.Data(),
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Storage: nil,
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Depth: depth,
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Err: err,
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})
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}
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// CaptureEnd is triggered at end of execution.
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func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration) error {
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type endLog struct {
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Output string `json:"output"`
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GasUsed math.HexOrDecimal64 `json:"gasUsed"`
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Time time.Duration `json:"time"`
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}
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return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t})
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}
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@ -90,6 +90,18 @@ var (
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Name: "nogasmetering",
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Usage: "disable gas metering",
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}
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GenesisFlag = cli.StringFlag{
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Name: "prestate",
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Usage: "JSON file with prestate (genesis) config",
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}
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MachineFlag = cli.BoolFlag{
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Name: "json",
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Usage: "output trace logs in machine readable format (json)",
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}
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SenderFlag = cli.StringFlag{
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Name: "sender",
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Usage: "The transaction origin",
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}
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)
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func init() {
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@ -108,6 +120,9 @@ func init() {
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MemProfileFlag,
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CPUProfileFlag,
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StatDumpFlag,
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GenesisFlag,
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MachineFlag,
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SenderFlag,
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}
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app.Commands = []cli.Command{
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compileCommand,
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@ -18,6 +18,7 @@ package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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@ -29,11 +30,13 @@ import (
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"github.com/ethereum/go-ethereum/cmd/evm/internal/compiler"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/core/vm/runtime"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/params"
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cli "gopkg.in/urfave/cli.v1"
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)
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@ -45,17 +48,59 @@ var runCommand = cli.Command{
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Description: `The run command runs arbitrary EVM code.`,
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}
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// readGenesis will read the given JSON format genesis file and return
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// the initialized Genesis structure
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func readGenesis(genesisPath string) *core.Genesis {
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// Make sure we have a valid genesis JSON
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//genesisPath := ctx.Args().First()
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if len(genesisPath) == 0 {
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utils.Fatalf("Must supply path to genesis JSON file")
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}
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file, err := os.Open(genesisPath)
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if err != nil {
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utils.Fatalf("Failed to read genesis file: %v", err)
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}
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defer file.Close()
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genesis := new(core.Genesis)
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if err := json.NewDecoder(file).Decode(genesis); err != nil {
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utils.Fatalf("invalid genesis file: %v", err)
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}
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return genesis
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}
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func runCmd(ctx *cli.Context) error {
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glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(false)))
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glogger.Verbosity(log.Lvl(ctx.GlobalInt(VerbosityFlag.Name)))
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log.Root().SetHandler(glogger)
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var (
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db, _ = ethdb.NewMemDatabase()
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statedb, _ = state.New(common.Hash{}, db)
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sender = common.StringToAddress("sender")
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logger = vm.NewStructLogger(nil)
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tracer vm.Tracer
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debugLogger *vm.StructLogger
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statedb *state.StateDB
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chainConfig *params.ChainConfig
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sender = common.StringToAddress("sender")
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)
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if ctx.GlobalBool(MachineFlag.Name) {
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tracer = NewJSONLogger(os.Stdout)
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} else if ctx.GlobalBool(DebugFlag.Name) {
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debugLogger = vm.NewStructLogger(nil)
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tracer = debugLogger
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} else {
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debugLogger = vm.NewStructLogger(nil)
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}
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if ctx.GlobalString(GenesisFlag.Name) != "" {
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gen := readGenesis(ctx.GlobalString(GenesisFlag.Name))
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_, statedb = gen.ToBlock()
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chainConfig = gen.Config
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} else {
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var db, _ = ethdb.NewMemDatabase()
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statedb, _ = state.New(common.Hash{}, db)
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}
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if ctx.GlobalString(SenderFlag.Name) != "" {
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sender = common.HexToAddress(ctx.GlobalString(SenderFlag.Name))
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}
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statedb.CreateAccount(sender)
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var (
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@ -95,16 +140,16 @@ func runCmd(ctx *cli.Context) error {
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}
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code = common.Hex2Bytes(string(bytes.TrimRight(hexcode, "\n")))
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}
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initialGas := ctx.GlobalUint64(GasFlag.Name)
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runtimeConfig := runtime.Config{
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Origin: sender,
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State: statedb,
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GasLimit: ctx.GlobalUint64(GasFlag.Name),
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GasLimit: initialGas,
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GasPrice: utils.GlobalBig(ctx, PriceFlag.Name),
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Value: utils.GlobalBig(ctx, ValueFlag.Name),
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EVMConfig: vm.Config{
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Tracer: logger,
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Debug: ctx.GlobalBool(DebugFlag.Name),
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Tracer: tracer,
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Debug: ctx.GlobalBool(DebugFlag.Name) || ctx.GlobalBool(MachineFlag.Name),
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DisableGasMetering: ctx.GlobalBool(DisableGasMeteringFlag.Name),
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},
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}
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@ -122,15 +167,19 @@ func runCmd(ctx *cli.Context) error {
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defer pprof.StopCPUProfile()
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}
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if chainConfig != nil {
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runtimeConfig.ChainConfig = chainConfig
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}
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tstart := time.Now()
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var leftOverGas uint64
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if ctx.GlobalBool(CreateFlag.Name) {
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input := append(code, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name))...)
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ret, _, err = runtime.Create(input, &runtimeConfig)
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ret, _, leftOverGas, err = runtime.Create(input, &runtimeConfig)
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} else {
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receiver := common.StringToAddress("receiver")
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statedb.SetCode(receiver, code)
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ret, err = runtime.Call(receiver, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)), &runtimeConfig)
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ret, leftOverGas, err = runtime.Call(receiver, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)), &runtimeConfig)
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}
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execTime := time.Since(tstart)
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@ -153,8 +202,10 @@ func runCmd(ctx *cli.Context) error {
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}
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if ctx.GlobalBool(DebugFlag.Name) {
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fmt.Fprintln(os.Stderr, "#### TRACE ####")
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vm.WriteTrace(os.Stderr, logger.StructLogs())
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if debugLogger != nil {
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fmt.Fprintln(os.Stderr, "#### TRACE ####")
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vm.WriteTrace(os.Stderr, debugLogger.StructLogs())
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}
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fmt.Fprintln(os.Stderr, "#### LOGS ####")
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vm.WriteLogs(os.Stderr, statedb.Logs())
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}
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@ -167,14 +218,18 @@ heap objects: %d
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allocations: %d
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total allocations: %d
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GC calls: %d
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Gas used: %d
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`, execTime, mem.HeapObjects, mem.Alloc, mem.TotalAlloc, mem.NumGC)
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`, execTime, mem.HeapObjects, mem.Alloc, mem.TotalAlloc, mem.NumGC, initialGas-leftOverGas)
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}
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if tracer != nil {
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tracer.CaptureEnd(ret, initialGas-leftOverGas, execTime)
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} else {
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fmt.Printf("0x%x\n", ret)
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}
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fmt.Printf("0x%x", ret)
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if err != nil {
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fmt.Printf(" error: %v", err)
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fmt.Printf(" error: %v\n", err)
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}
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fmt.Println()
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return nil
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}
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@ -0,0 +1,95 @@
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// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
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package vm
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import (
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"encoding/json"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/common/math"
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)
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func (s StructLog) MarshalJSON() ([]byte, error) {
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type StructLog struct {
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Pc uint64 `json:"pc"`
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Op OpCode `json:"op"`
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Gas math.HexOrDecimal64 `json:"gas"`
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GasCost math.HexOrDecimal64 `json:"gasCost"`
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Memory hexutil.Bytes `json:"memory"`
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Stack []*math.HexOrDecimal256 `json:"stack"`
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Storage map[common.Hash]common.Hash `json:"-"`
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Depth int `json:"depth"`
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Err error `json:"error"`
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OpName string `json:"opName"`
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MemorySize int `json:"memSize"`
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}
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var enc StructLog
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enc.Pc = s.Pc
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enc.Op = s.Op
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enc.Gas = math.HexOrDecimal64(s.Gas)
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enc.GasCost = math.HexOrDecimal64(s.GasCost)
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enc.Memory = s.Memory
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if s.Stack != nil {
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enc.Stack = make([]*math.HexOrDecimal256, len(s.Stack))
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for k, v := range s.Stack {
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enc.Stack[k] = (*math.HexOrDecimal256)(v)
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}
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}
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enc.Storage = s.Storage
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enc.Depth = s.Depth
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enc.Err = s.Err
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enc.OpName = s.OpName()
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enc.MemorySize = s.MemorySize()
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return json.Marshal(&enc)
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}
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func (s *StructLog) UnmarshalJSON(input []byte) error {
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type StructLog struct {
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Pc *uint64 `json:"pc"`
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Op *OpCode `json:"op"`
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Gas *math.HexOrDecimal64 `json:"gas"`
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GasCost *math.HexOrDecimal64 `json:"gasCost"`
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Memory hexutil.Bytes `json:"memory"`
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Stack []*math.HexOrDecimal256 `json:"stack"`
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Storage map[common.Hash]common.Hash `json:"-"`
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Depth *int `json:"depth"`
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Err *error `json:"error"`
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}
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var dec StructLog
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if err := json.Unmarshal(input, &dec); err != nil {
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return err
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}
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if dec.Pc != nil {
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s.Pc = *dec.Pc
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}
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if dec.Op != nil {
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s.Op = *dec.Op
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}
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if dec.Gas != nil {
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s.Gas = uint64(*dec.Gas)
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}
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if dec.GasCost != nil {
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s.GasCost = uint64(*dec.GasCost)
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}
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if dec.Memory != nil {
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s.Memory = dec.Memory
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}
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if dec.Stack != nil {
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s.Stack = make([]*big.Int, len(dec.Stack))
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for k, v := range dec.Stack {
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s.Stack[k] = (*big.Int)(v)
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}
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}
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if dec.Storage != nil {
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s.Storage = dec.Storage
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}
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if dec.Depth != nil {
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s.Depth = *dec.Depth
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}
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if dec.Err != nil {
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s.Err = *dec.Err
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}
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return nil
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}
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@ -21,8 +21,10 @@ import (
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"fmt"
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"io"
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"math/big"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core/types"
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)
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@ -47,18 +49,38 @@ type LogConfig struct {
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Limit int // maximum length of output, but zero means unlimited
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}
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//go:generate gencodec -type StructLog -field-override structLogMarshaling -out gen_structlog.go
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// StructLog is emitted to the EVM each cycle and lists information about the current internal state
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// prior to the execution of the statement.
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type StructLog struct {
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Pc uint64
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Op OpCode
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Gas uint64
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GasCost uint64
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Memory []byte
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Stack []*big.Int
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Storage map[common.Hash]common.Hash
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Depth int
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Err error
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Pc uint64 `json:"pc"`
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Op OpCode `json:"op"`
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Gas uint64 `json:"gas"`
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GasCost uint64 `json:"gasCost"`
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Memory []byte `json:"memory"`
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Stack []*big.Int `json:"stack"`
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Storage map[common.Hash]common.Hash `json:"-"`
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Depth int `json:"depth"`
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Err error `json:"error"`
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}
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// overrides for gencodec
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type structLogMarshaling struct {
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Stack []*math.HexOrDecimal256
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Gas math.HexOrDecimal64
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GasCost math.HexOrDecimal64
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Memory hexutil.Bytes
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OpName string `json:"opName"`
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MemorySize int `json:"memSize"`
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}
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func (s *StructLog) OpName() string {
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return s.Op.String()
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}
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func (s *StructLog) MemorySize() int {
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return len(s.Memory)
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}
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// Tracer is used to collect execution traces from an EVM transaction
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@ -68,6 +90,7 @@ type StructLog struct {
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// if you need to retain them beyond the current call.
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type Tracer interface {
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CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error
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CaptureEnd(output []byte, gasUsed uint64, t time.Duration) error
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}
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// StructLogger is an EVM state logger and implements Tracer.
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@ -82,7 +105,7 @@ type StructLogger struct {
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changedValues map[common.Address]Storage
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}
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// NewLogger returns a new logger
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// NewStructLogger returns a new logger
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func NewStructLogger(cfg *LogConfig) *StructLogger {
|
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logger := &StructLogger{
|
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changedValues: make(map[common.Address]Storage),
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|
|
@ -93,9 +116,9 @@ func NewStructLogger(cfg *LogConfig) *StructLogger {
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return logger
|
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}
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// captureState logs a new structured log message and pushes it out to the environment
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// CaptureState logs a new structured log message and pushes it out to the environment
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//
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// captureState also tracks SSTORE ops to track dirty values.
|
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// CaptureState also tracks SSTORE ops to track dirty values.
|
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func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
|
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// check if already accumulated the specified number of logs
|
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if l.cfg.Limit != 0 && l.cfg.Limit <= len(l.logs) {
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|
|
@ -164,6 +187,11 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui
|
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return nil
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}
|
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|
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func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration) error {
|
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fmt.Printf("0x%x", output)
|
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return nil
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}
|
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|
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// StructLogs returns a list of captured log entries
|
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func (l *StructLogger) StructLogs() []StructLog {
|
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return l.logs
|
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|
|
|
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|
|
@ -125,7 +125,7 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
|
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}
|
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|
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// Create executes the code using the EVM create method
|
||||
func Create(input []byte, cfg *Config) ([]byte, common.Address, error) {
|
||||
func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
|
||||
if cfg == nil {
|
||||
cfg = new(Config)
|
||||
}
|
||||
|
|
@ -141,13 +141,13 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, error) {
|
|||
)
|
||||
|
||||
// Call the code with the given configuration.
|
||||
code, address, _, err := vmenv.Create(
|
||||
code, address, leftOverGas, err := vmenv.Create(
|
||||
sender,
|
||||
input,
|
||||
cfg.GasLimit,
|
||||
cfg.Value,
|
||||
)
|
||||
return code, address, err
|
||||
return code, address, leftOverGas, err
|
||||
}
|
||||
|
||||
// Call executes the code given by the contract's address. It will return the
|
||||
|
|
@ -155,14 +155,14 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, error) {
|
|||
//
|
||||
// Call, unlike Execute, requires a config and also requires the State field to
|
||||
// be set.
|
||||
func Call(address common.Address, input []byte, cfg *Config) ([]byte, error) {
|
||||
func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) {
|
||||
setDefaults(cfg)
|
||||
|
||||
vmenv := NewEnv(cfg, cfg.State)
|
||||
|
||||
sender := cfg.State.GetOrNewStateObject(cfg.Origin)
|
||||
// Call the code with the given configuration.
|
||||
ret, _, err := vmenv.Call(
|
||||
ret, leftOverGas, err := vmenv.Call(
|
||||
sender,
|
||||
address,
|
||||
input,
|
||||
|
|
@ -170,5 +170,5 @@ func Call(address common.Address, input []byte, cfg *Config) ([]byte, error) {
|
|||
cfg.Value,
|
||||
)
|
||||
|
||||
return ret, err
|
||||
return ret, leftOverGas, err
|
||||
}
|
||||
|
|
|
|||
|
|
@ -106,7 +106,7 @@ func TestCall(t *testing.T) {
|
|||
byte(vm.RETURN),
|
||||
})
|
||||
|
||||
ret, err := Call(address, nil, &Config{State: state})
|
||||
ret, _, err := Call(address, nil, &Config{State: state})
|
||||
if err != nil {
|
||||
t.Fatal("didn't expect error", err)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@ import (
|
|||
"errors"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"time"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/common/hexutil"
|
||||
|
|
@ -344,6 +345,12 @@ func (jst *JavascriptTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode,
|
|||
return nil
|
||||
}
|
||||
|
||||
// CaptureEnd is called after the call finishes
|
||||
func (jst *JavascriptTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration) error {
|
||||
//TODO! @Arachnid please figure out of there's anything we can use this method for
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error
|
||||
func (jst *JavascriptTracer) GetResult() (result interface{}, err error) {
|
||||
if jst.err != nil {
|
||||
|
|
|
|||
Loading…
Reference in New Issue