forked from cerc-io/plugeth
05280a7ae3
* tests: add testdata of call tracer * eth/tracers: return revert reason in call_tracer * eth/tracers: regenerate assets * eth/tracers: add error message even if no exec occurrs, fixes #21438 Co-authored-by: Martin Holst Swende <martin@swende.se>
300 lines
10 KiB
Go
300 lines
10 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 tracers
|
|
|
|
import (
|
|
"crypto/ecdsa"
|
|
"crypto/rand"
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"math/big"
|
|
"path/filepath"
|
|
"reflect"
|
|
"strings"
|
|
"testing"
|
|
|
|
"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/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"github.com/ethereum/go-ethereum/tests"
|
|
)
|
|
|
|
// To generate a new callTracer test, copy paste the makeTest method below into
|
|
// a Geth console and call it with a transaction hash you which to export.
|
|
|
|
/*
|
|
// makeTest generates a callTracer test by running a prestate reassembled and a
|
|
// call trace run, assembling all the gathered information into a test case.
|
|
var makeTest = function(tx, rewind) {
|
|
// Generate the genesis block from the block, transaction and prestate data
|
|
var block = eth.getBlock(eth.getTransaction(tx).blockHash);
|
|
var genesis = eth.getBlock(block.parentHash);
|
|
|
|
delete genesis.gasUsed;
|
|
delete genesis.logsBloom;
|
|
delete genesis.parentHash;
|
|
delete genesis.receiptsRoot;
|
|
delete genesis.sha3Uncles;
|
|
delete genesis.size;
|
|
delete genesis.transactions;
|
|
delete genesis.transactionsRoot;
|
|
delete genesis.uncles;
|
|
|
|
genesis.gasLimit = genesis.gasLimit.toString();
|
|
genesis.number = genesis.number.toString();
|
|
genesis.timestamp = genesis.timestamp.toString();
|
|
|
|
genesis.alloc = debug.traceTransaction(tx, {tracer: "prestateTracer", rewind: rewind});
|
|
for (var key in genesis.alloc) {
|
|
genesis.alloc[key].nonce = genesis.alloc[key].nonce.toString();
|
|
}
|
|
genesis.config = admin.nodeInfo.protocols.eth.config;
|
|
|
|
// Generate the call trace and produce the test input
|
|
var result = debug.traceTransaction(tx, {tracer: "callTracer", rewind: rewind});
|
|
delete result.time;
|
|
|
|
console.log(JSON.stringify({
|
|
genesis: genesis,
|
|
context: {
|
|
number: block.number.toString(),
|
|
difficulty: block.difficulty,
|
|
timestamp: block.timestamp.toString(),
|
|
gasLimit: block.gasLimit.toString(),
|
|
miner: block.miner,
|
|
},
|
|
input: eth.getRawTransaction(tx),
|
|
result: result,
|
|
}, null, 2));
|
|
}
|
|
*/
|
|
|
|
// callTrace is the result of a callTracer run.
|
|
type callTrace struct {
|
|
Type string `json:"type"`
|
|
From common.Address `json:"from"`
|
|
To common.Address `json:"to"`
|
|
Input hexutil.Bytes `json:"input"`
|
|
Output hexutil.Bytes `json:"output"`
|
|
Gas *hexutil.Uint64 `json:"gas,omitempty"`
|
|
GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
|
|
Value *hexutil.Big `json:"value,omitempty"`
|
|
Error string `json:"error,omitempty"`
|
|
Calls []callTrace `json:"calls,omitempty"`
|
|
}
|
|
|
|
type callContext struct {
|
|
Number math.HexOrDecimal64 `json:"number"`
|
|
Difficulty *math.HexOrDecimal256 `json:"difficulty"`
|
|
Time math.HexOrDecimal64 `json:"timestamp"`
|
|
GasLimit math.HexOrDecimal64 `json:"gasLimit"`
|
|
Miner common.Address `json:"miner"`
|
|
}
|
|
|
|
// callTracerTest defines a single test to check the call tracer against.
|
|
type callTracerTest struct {
|
|
Genesis *core.Genesis `json:"genesis"`
|
|
Context *callContext `json:"context"`
|
|
Input string `json:"input"`
|
|
Result *callTrace `json:"result"`
|
|
}
|
|
|
|
func TestPrestateTracerCreate2(t *testing.T) {
|
|
unsignedTx := types.NewTransaction(1, common.HexToAddress("0x00000000000000000000000000000000deadbeef"),
|
|
new(big.Int), 5000000, big.NewInt(1), []byte{})
|
|
|
|
privateKeyECDSA, err := ecdsa.GenerateKey(crypto.S256(), rand.Reader)
|
|
if err != nil {
|
|
t.Fatalf("err %v", err)
|
|
}
|
|
signer := types.NewEIP155Signer(big.NewInt(1))
|
|
tx, err := types.SignTx(unsignedTx, signer, privateKeyECDSA)
|
|
if err != nil {
|
|
t.Fatalf("err %v", err)
|
|
}
|
|
/**
|
|
This comes from one of the test-vectors on the Skinny Create2 - EIP
|
|
|
|
address 0x00000000000000000000000000000000deadbeef
|
|
salt 0x00000000000000000000000000000000000000000000000000000000cafebabe
|
|
init_code 0xdeadbeef
|
|
gas (assuming no mem expansion): 32006
|
|
result: 0x60f3f640a8508fC6a86d45DF051962668E1e8AC7
|
|
*/
|
|
origin, _ := signer.Sender(tx)
|
|
context := vm.Context{
|
|
CanTransfer: core.CanTransfer,
|
|
Transfer: core.Transfer,
|
|
Origin: origin,
|
|
Coinbase: common.Address{},
|
|
BlockNumber: new(big.Int).SetUint64(8000000),
|
|
Time: new(big.Int).SetUint64(5),
|
|
Difficulty: big.NewInt(0x30000),
|
|
GasLimit: uint64(6000000),
|
|
GasPrice: big.NewInt(1),
|
|
}
|
|
alloc := core.GenesisAlloc{}
|
|
|
|
// The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns
|
|
// the address
|
|
alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{
|
|
Nonce: 1,
|
|
Code: hexutil.MustDecode("0x63deadbeef60005263cafebabe6004601c6000F560005260206000F3"),
|
|
Balance: big.NewInt(1),
|
|
}
|
|
alloc[origin] = core.GenesisAccount{
|
|
Nonce: 1,
|
|
Code: []byte{},
|
|
Balance: big.NewInt(500000000000000),
|
|
}
|
|
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false)
|
|
|
|
// Create the tracer, the EVM environment and run it
|
|
tracer, err := New("prestateTracer")
|
|
if err != nil {
|
|
t.Fatalf("failed to create call tracer: %v", err)
|
|
}
|
|
evm := vm.NewEVM(context, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tracer})
|
|
|
|
msg, err := tx.AsMessage(signer)
|
|
if err != nil {
|
|
t.Fatalf("failed to prepare transaction for tracing: %v", err)
|
|
}
|
|
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
|
|
if _, err = st.TransitionDb(); err != nil {
|
|
t.Fatalf("failed to execute transaction: %v", err)
|
|
}
|
|
// Retrieve the trace result and compare against the etalon
|
|
res, err := tracer.GetResult()
|
|
if err != nil {
|
|
t.Fatalf("failed to retrieve trace result: %v", err)
|
|
}
|
|
ret := make(map[string]interface{})
|
|
if err := json.Unmarshal(res, &ret); err != nil {
|
|
t.Fatalf("failed to unmarshal trace result: %v", err)
|
|
}
|
|
if _, has := ret["0x60f3f640a8508fc6a86d45df051962668e1e8ac7"]; !has {
|
|
t.Fatalf("Expected 0x60f3f640a8508fc6a86d45df051962668e1e8ac7 in result")
|
|
}
|
|
}
|
|
|
|
// Iterates over all the input-output datasets in the tracer test harness and
|
|
// runs the JavaScript tracers against them.
|
|
func TestCallTracer(t *testing.T) {
|
|
files, err := ioutil.ReadDir("testdata")
|
|
if err != nil {
|
|
t.Fatalf("failed to retrieve tracer test suite: %v", err)
|
|
}
|
|
for _, file := range files {
|
|
if !strings.HasPrefix(file.Name(), "call_tracer_") {
|
|
continue
|
|
}
|
|
file := file // capture range variable
|
|
t.Run(camel(strings.TrimSuffix(strings.TrimPrefix(file.Name(), "call_tracer_"), ".json")), func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Call tracer test found, read if from disk
|
|
blob, err := ioutil.ReadFile(filepath.Join("testdata", file.Name()))
|
|
if err != nil {
|
|
t.Fatalf("failed to read testcase: %v", err)
|
|
}
|
|
test := new(callTracerTest)
|
|
if err := json.Unmarshal(blob, test); err != nil {
|
|
t.Fatalf("failed to parse testcase: %v", err)
|
|
}
|
|
// Configure a blockchain with the given prestate
|
|
tx := new(types.Transaction)
|
|
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
|
|
t.Fatalf("failed to parse testcase input: %v", err)
|
|
}
|
|
signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
|
|
origin, _ := signer.Sender(tx)
|
|
|
|
context := vm.Context{
|
|
CanTransfer: core.CanTransfer,
|
|
Transfer: core.Transfer,
|
|
Origin: origin,
|
|
Coinbase: test.Context.Miner,
|
|
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
|
|
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
|
|
Difficulty: (*big.Int)(test.Context.Difficulty),
|
|
GasLimit: uint64(test.Context.GasLimit),
|
|
GasPrice: tx.GasPrice(),
|
|
}
|
|
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
|
|
|
|
// Create the tracer, the EVM environment and run it
|
|
tracer, err := New("callTracer")
|
|
if err != nil {
|
|
t.Fatalf("failed to create call tracer: %v", err)
|
|
}
|
|
evm := vm.NewEVM(context, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
|
|
|
|
msg, err := tx.AsMessage(signer)
|
|
if err != nil {
|
|
t.Fatalf("failed to prepare transaction for tracing: %v", err)
|
|
}
|
|
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
|
|
if _, err = st.TransitionDb(); err != nil {
|
|
t.Fatalf("failed to execute transaction: %v", err)
|
|
}
|
|
// Retrieve the trace result and compare against the etalon
|
|
res, err := tracer.GetResult()
|
|
if err != nil {
|
|
t.Fatalf("failed to retrieve trace result: %v", err)
|
|
}
|
|
ret := new(callTrace)
|
|
if err := json.Unmarshal(res, ret); err != nil {
|
|
t.Fatalf("failed to unmarshal trace result: %v", err)
|
|
}
|
|
|
|
if !jsonEqual(ret, test.Result) {
|
|
// uncomment this for easier debugging
|
|
//have, _ := json.MarshalIndent(ret, "", " ")
|
|
//want, _ := json.MarshalIndent(test.Result, "", " ")
|
|
//t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want))
|
|
t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
|
|
// comparison
|
|
func jsonEqual(x, y interface{}) bool {
|
|
xTrace := new(callTrace)
|
|
yTrace := new(callTrace)
|
|
if xj, err := json.Marshal(x); err == nil {
|
|
json.Unmarshal(xj, xTrace)
|
|
} else {
|
|
return false
|
|
}
|
|
if yj, err := json.Marshal(y); err == nil {
|
|
json.Unmarshal(yj, yTrace)
|
|
} else {
|
|
return false
|
|
}
|
|
return reflect.DeepEqual(xTrace, yTrace)
|
|
}
|