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eth/tracers: add diffMode to prestateTracer (#25422)

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Backwards compatibility warning: The result will from now on omit empty fields instead
of including a zero value (e.g. no more `balance: '0x'`).

The prestateTracer will now take an option `diffMode: bool`. In this mode
the tracer will output the pre state and post data for the modified parts of state.
Read-only accesses will be completely omitted. Creations (be it account or slot)
will be signified by omission in the `pre` list and inclusion in `post`. Whereas
deletion (be it account or slot) will be signified by inclusion in `pre` and omission
in `post` list.

Signed-off-by: Delweng <delweng@gmail.com>
pull/25939/head
Delweng 2 years ago committed by GitHub
parent e14164d516
commit 5d52a35931
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 1245 additions and 114 deletions
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  1. 86
      eth/tracers/internal/tracetest/calltrace_test.go
  2. 144
      eth/tracers/internal/tracetest/prestate_test.go
  3. 84
      eth/tracers/internal/tracetest/testdata/prestate_tracer/simple.json
  4. 102
      eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/create.json
  5. 104
      eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/create_suicide.json
  6. 374
      eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/inner_create.json
  7. 106
      eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/simple.json
  8. 107
      eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/suicide.json
  9. 90
      eth/tracers/internal/tracetest/util.go
  10. 8
      eth/tracers/native/gen_account_json.go
  11. 154
      eth/tracers/native/prestate.go

86
eth/tracers/internal/tracetest/calltrace_test.go
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@ -21,10 +21,8 @@ import (
"math/big"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
"unicode"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
@ -38,62 +36,8 @@ import (
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/tests"
// Force-load native and js packages, to trigger registration
_ "github.com/ethereum/go-ethereum/eth/tracers/js"
_ "github.com/ethereum/go-ethereum/eth/tracers/native"
)
// 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));
}
*/
type callContext struct {
Number math.HexOrDecimal64 `json:"number"`
Difficulty *math.HexOrDecimal256 `json:"difficulty"`
@ -204,7 +148,7 @@ func testCallTracer(tracerName string, dirPath string, t *testing.T) {
t.Fatalf("failed to unmarshal trace result: %v", err)
}
if !jsonEqual(ret, test.Result) {
if !jsonEqual(ret, test.Result, new(callTrace), new(callTrace)) {
// uncomment this for easier debugging
//have, _ := json.MarshalIndent(ret, "", " ")
//want, _ := json.MarshalIndent(test.Result, "", " ")
@ -215,32 +159,6 @@ func testCallTracer(tracerName string, dirPath string, t *testing.T) {
}
}
// 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)
}
// camel converts a snake cased input string into a camel cased output.
func camel(str string) string {
pieces := strings.Split(str, "_")
for i := 1; i < len(pieces); i++ {
pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:]
}
return strings.Join(pieces, "")
}
func BenchmarkTracers(b *testing.B) {
files, err := os.ReadDir(filepath.Join("testdata", "call_tracer"))
if err != nil {
@ -386,7 +304,7 @@ func TestZeroValueToNotExitCall(t *testing.T) {
wantStr := `{"type":"CALL","from":"0x682a80a6f560eec50d54e63cbeda1c324c5f8d1b","to":"0x00000000000000000000000000000000deadbeef","value":"0x0","gas":"0x7148","gasUsed":"0x2d0","input":"0x","output":"0x","calls":[{"type":"CALL","from":"0x00000000000000000000000000000000deadbeef","to":"0x00000000000000000000000000000000000000ff","value":"0x0","gas":"0x6cbf","gasUsed":"0x0","input":"0x","output":"0x"}]}`
want := new(callTrace)
json.Unmarshal([]byte(wantStr), want)
if !jsonEqual(have, want) {
if !jsonEqual(have, want, new(callTrace), new(callTrace)) {
t.Error("have != want")
}
}

144
eth/tracers/internal/tracetest/prestate_test.go
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@ -0,0 +1,144 @@
// Copyright 2021 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 tracetest
import (
"encoding/json"
"math/big"
"os"
"path/filepath"
"strings"
"testing"
"github.com/ethereum/go-ethereum/common"
"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/eth/tracers"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/tests"
)
// prestateTrace is the result of a prestateTrace run.
type prestateTrace = map[common.Address]*account
type account struct {
Balance string `json:"balance,omitempty"`
Nonce uint64 `json:"nonce,omitempty"`
Code string `json:"code,omitempty"`
Storage map[common.Hash]common.Hash `json:"storage,omitempty"`
}
type prePostStateTrace struct {
Pre prestateTrace `json:"pre"`
Post prestateTrace `json:"post"`
}
// prestateTraceTest defines a single test to check the stateDiff tracer against.
type prestateTraceTest struct {
Genesis *core.Genesis `json:"genesis"`
Context *callContext `json:"context"`
Input string `json:"input"`
TracerConfig json.RawMessage `json:"tracerConfig"`
Result interface{} `json:"result"`
}
func TestPrestateTracer(t *testing.T) {
testPrestateDiffTracer("prestateTracer", "prestate_tracer", t, func() interface{} { return new(prestateTrace) })
}
func TestPrestateWithDiffModeTracer(t *testing.T) {
testPrestateDiffTracer("prestateTracer", "prestate_tracer_with_diff_mode", t, func() interface{} { return new(prePostStateTrace) })
}
func testPrestateDiffTracer(tracerName string, dirPath string, t *testing.T, typeBuilder func() interface{}) {
files, err := os.ReadDir(filepath.Join("testdata", dirPath))
if err != nil {
t.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
t.Parallel()
var (
test = new(prestateTraceTest)
tx = new(types.Transaction)
)
// Call tracer test found, read if from disk
if blob, err := os.ReadFile(filepath.Join("testdata", dirPath, file.Name())); err != nil {
t.Fatalf("failed to read testcase: %v", err)
} else if err := json.Unmarshal(blob, test); err != nil {
t.Fatalf("failed to parse testcase: %v", err)
}
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
t.Fatalf("failed to parse testcase input: %v", err)
}
// Configure a blockchain with the given prestate
var (
signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
origin, _ = signer.Sender(tx)
txContext = vm.TxContext{
Origin: origin,
GasPrice: tx.GasPrice(),
}
context = vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
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),
}
_, statedb = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
)
tracer, err := tracers.New(tracerName, new(tracers.Context), test.TracerConfig)
if err != nil {
t.Fatalf("failed to create call tracer: %v", err)
}
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
msg, err := tx.AsMessage(signer, nil)
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 := typeBuilder()
if err := json.Unmarshal(res, ret); err != nil {
t.Fatalf("failed to unmarshal trace result: %v", err)
}
if !jsonEqual(ret, test.Result, typeBuilder(), typeBuilder()) {
// 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)
}
})
}
}

84
eth/tracers/internal/tracetest/testdata/prestate_tracer/simple.json vendored
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@ -0,0 +1,84 @@
{
"context": {
"difficulty": "3502894804",
"gasLimit": "4722976",
"miner": "0x1585936b53834b021f68cc13eeefdec2efc8e724",
"number": "2289806",
"timestamp": "1513601314"
},
"genesis": {
"alloc": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x0",
"code": "0x",
"nonce": "22",
"storage": {}
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"code": "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",
"nonce": "1",
"storage": {
"0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000001b436ba50d378d4bbc8660d312a13df6af6e89dfb",
"0x0000000000000000000000000000000000000000000000000000000000000001": "0x00000000000000000000000000000000000000000000000006f05b59d3b20000",
"0x0000000000000000000000000000000000000000000000000000000000000002": "0x000000000000000000000000000000000000000000000000000000000000003c",
"0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834"
}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d77678137ac1b775",
"code": "0x",
"nonce": "29072",
"storage": {}
}
},
"config": {
"byzantiumBlock": 1700000,
"chainId": 3,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"ethash": {},
"homesteadBlock": 0
},
"difficulty": "3509749784",
"extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
"gasLimit": "4727564",
"hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440",
"miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
"mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada",
"nonce": "0x4eb12e19c16d43da",
"number": "2289805",
"stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f",
"timestamp": "1513601261",
"totalDifficulty": "7143276353481064"
},
"input": "0xf88b8271908506fc23ac0083015f90943b873a919aa0512d5a0f09e6dcceaa4a6727fafe80a463e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c52aa0bdce0b59e8761854e857fe64015f06dd08a4fbb7624f6094893a79a72e6ad6bea01d9dde033cff7bb235a3163f348a6d7ab8d6b52bc0963a95b91612e40ca766a4",
"result": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x0",
"nonce": 22
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"nonce": 1,
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102
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/create.json vendored
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@ -0,0 +1,102 @@
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104
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/create_suicide.json vendored
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{
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374
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/inner_create.json vendored
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106
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/simple.json vendored
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{
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"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"code": "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",
"nonce": "1",
"storage": {
"0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000001b436ba50d378d4bbc8660d312a13df6af6e89dfb",
"0x0000000000000000000000000000000000000000000000000000000000000001": "0x00000000000000000000000000000000000000000000000006f05b59d3b20000",
"0x0000000000000000000000000000000000000000000000000000000000000002": "0x000000000000000000000000000000000000000000000000000000000000003c",
"0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834"
}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d77678137ac1b775",
"code": "0x",
"nonce": "29072",
"storage": {}
}
},
"config": {
"byzantiumBlock": 1700000,
"chainId": 3,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"ethash": {},
"homesteadBlock": 0
},
"difficulty": "3509749784",
"extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
"gasLimit": "4727564",
"hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440",
"miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
"mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada",
"nonce": "0x4eb12e19c16d43da",
"number": "2289805",
"stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f",
"timestamp": "1513601261",
"totalDifficulty": "7143276353481064"
},
"input": "0xf88b8271908506fc23ac0083015f90943b873a919aa0512d5a0f09e6dcceaa4a6727fafe80a463e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c52aa0bdce0b59e8761854e857fe64015f06dd08a4fbb7624f6094893a79a72e6ad6bea01d9dde033cff7bb235a3163f348a6d7ab8d6b52bc0963a95b91612e40ca766a4",
"tracerConfig": {
"diffMode": true
},
"result": {
"pre": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x0",
"nonce": 22
},
"0x1585936b53834b021f68cc13eeefdec2efc8e724": {
"balance": "0x0"
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"nonce": 1,
"code": "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",
"storage": {
"0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000001b436ba50d378d4bbc8660d312a13df6af6e89dfb",
"0x0000000000000000000000000000000000000000000000000000000000000001": "0x00000000000000000000000000000000000000000000000006f05b59d3b20000",
"0x0000000000000000000000000000000000000000000000000000000000000002": "0x000000000000000000000000000000000000000000000000000000000000003c",
"0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834"
}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d77678137ac1b775",
"nonce": 29072
}
},
"post": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x6f05b59d3b20000"
},
"0x1585936b53834b021f68cc13eeefdec2efc8e724": {
"balance": "0x420eed1bd6c00"
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d869a3b70062eb9bd5",
"storage": {
"0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b95e"
}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d7725724a9044b75",
"nonce": 29073
}
}
}
}

107
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/suicide.json vendored
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File diff suppressed because one or more lines are too long

90
eth/tracers/internal/tracetest/util.go
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@ -0,0 +1,90 @@
package tracetest
import (
"encoding/json"
"reflect"
"strings"
"unicode"
// Force-load native and js pacakges, to trigger registration
_ "github.com/ethereum/go-ethereum/eth/tracers/js"
_ "github.com/ethereum/go-ethereum/eth/tracers/native"
)
// 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) {
var nonce = genesis.alloc[key].nonce;
if (nonce) {
genesis.alloc[key].nonce = 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));
}
*/
// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
// comparison
func jsonEqual(xi, yi, xt, yt interface{}) bool {
if xj, err := json.Marshal(xi); err == nil {
json.Unmarshal(xj, xt)
} else {
return false
}
if yj, err := json.Marshal(yi); err == nil {
json.Unmarshal(yj, yt)
} else {
return false
}
return reflect.DeepEqual(xt, yt)
}
// camel converts a snake cased input string into a camel cased output.
func camel(str string) string {
pieces := strings.Split(str, "_")
for i := 1; i < len(pieces); i++ {
pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:]
}
return strings.Join(pieces, "")
}

8
eth/tracers/native/gen_account_json.go
Unescape View File

@ -15,10 +15,10 @@ var _ = (*accountMarshaling)(nil)
// MarshalJSON marshals as JSON.
func (a account) MarshalJSON() ([]byte, error) {
type account struct {
Balance *hexutil.Big `json:"balance"`
Nonce uint64 `json:"nonce"`
Code hexutil.Bytes `json:"code"`
Storage map[common.Hash]common.Hash `json:"storage"`
Balance *hexutil.Big `json:"balance,omitempty"`
Nonce uint64 `json:"nonce,omitempty"`
Code hexutil.Bytes `json:"code,omitempty"`
Storage map[common.Hash]common.Hash `json:"storage,omitempty"`
}
var enc account
enc.Balance = (*hexutil.Big)(a.Balance)

154
eth/tracers/native/prestate.go
Unescape View File

@ -17,6 +17,7 @@
package native
import (
"bytes"
"encoding/json"
"math/big"
"sync/atomic"
@ -35,12 +36,13 @@ func init() {
register("prestateTracer", newPrestateTracer)
}
type prestate = map[common.Address]*account
type state = map[common.Address]*account
type account struct {
Balance *big.Int `json:"balance"`
Nonce uint64 `json:"nonce"`
Code []byte `json:"code"`
Storage map[common.Hash]common.Hash `json:"storage"`
Balance *big.Int `json:"balance,omitempty"`
Nonce uint64 `json:"nonce,omitempty"`
Code []byte `json:"code,omitempty"`
Storage map[common.Hash]common.Hash `json:"storage,omitempty"`
}
type accountMarshaling struct {
@ -50,18 +52,38 @@ type accountMarshaling struct {
type prestateTracer struct {
env *vm.EVM
prestate prestate
pre state
post state
create bool
to common.Address
gasLimit uint64 // Amount of gas bought for the whole tx
config prestateTracerConfig
interrupt uint32 // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
created map[common.Address]bool
deleted map[common.Address]bool
}
type prestateTracerConfig struct {
DiffMode bool `json:"diffMode"` // If true, this tracer will return all diff states
}
func newPrestateTracer(ctx *tracers.Context, _ json.RawMessage) (tracers.Tracer, error) {
func newPrestateTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, error) {
// First callframe contains tx context info
// and is populated on start and end.
return &prestateTracer{prestate: prestate{}}, nil
var config prestateTracerConfig
if cfg != nil {
if err := json.Unmarshal(cfg, &config); err != nil {
return nil, err
}
}
return &prestateTracer{
pre: state{},
post: state{},
config: config,
created: make(map[common.Address]bool),
deleted: make(map[common.Address]bool),
}, nil
}
// CaptureStart implements the EVMLogger interface to initialize the tracing operation.
@ -72,26 +94,31 @@ func (t *prestateTracer) CaptureStart(env *vm.EVM, from common.Address, to commo
t.lookupAccount(from)
t.lookupAccount(to)
t.lookupAccount(env.Context.Coinbase)
// The recipient balance includes the value transferred.
toBal := new(big.Int).Sub(t.prestate[to].Balance, value)
t.prestate[to].Balance = toBal
toBal := new(big.Int).Sub(t.pre[to].Balance, value)
t.pre[to].Balance = toBal
// The sender balance is after reducing: value and gasLimit.
// We need to re-add them to get the pre-tx balance.
fromBal := new(big.Int).Set(t.prestate[from].Balance)
fromBal := new(big.Int).Set(t.pre[from].Balance)
gasPrice := env.TxContext.GasPrice
consumedGas := new(big.Int).Mul(gasPrice, new(big.Int).SetUint64(t.gasLimit))
fromBal.Add(fromBal, new(big.Int).Add(value, consumedGas))
t.prestate[from].Balance = fromBal
t.prestate[from].Nonce--
t.pre[from].Balance = fromBal
t.pre[from].Nonce--
if create && t.config.DiffMode {
t.created[to] = true
}
}
// CaptureEnd is called after the call finishes to finalize the tracing.
func (t *prestateTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) {
if t.create {
if t.create && !t.config.DiffMode {
// Exclude created contract.
delete(t.prestate, t.to)
delete(t.pre, t.to)
}
}
@ -100,27 +127,34 @@ func (t *prestateTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64,
stack := scope.Stack
stackData := stack.Data()
stackLen := len(stackData)
caller := scope.Contract.Address()
switch {
case stackLen >= 1 && (op == vm.SLOAD || op == vm.SSTORE):
slot := common.Hash(stackData[stackLen-1].Bytes32())
t.lookupStorage(scope.Contract.Address(), slot)
t.lookupStorage(caller, slot)
case stackLen >= 1 && (op == vm.EXTCODECOPY || op == vm.EXTCODEHASH || op == vm.EXTCODESIZE || op == vm.BALANCE || op == vm.SELFDESTRUCT):
addr := common.Address(stackData[stackLen-1].Bytes20())
t.lookupAccount(addr)
if op == vm.SELFDESTRUCT {
t.deleted[caller] = true
}
case stackLen >= 5 && (op == vm.DELEGATECALL || op == vm.CALL || op == vm.STATICCALL || op == vm.CALLCODE):
addr := common.Address(stackData[stackLen-2].Bytes20())
t.lookupAccount(addr)
case op == vm.CREATE:
addr := scope.Contract.Address()
nonce := t.env.StateDB.GetNonce(addr)
t.lookupAccount(crypto.CreateAddress(addr, nonce))
nonce := t.env.StateDB.GetNonce(caller)
addr := crypto.CreateAddress(caller, nonce)
t.lookupAccount(addr)
t.created[addr] = true
case stackLen >= 4 && op == vm.CREATE2:
offset := stackData[stackLen-2]
size := stackData[stackLen-3]
init := scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
inithash := crypto.Keccak256(init)
salt := stackData[stackLen-4]
t.lookupAccount(crypto.CreateAddress2(scope.Contract.Address(), salt.Bytes32(), inithash))
addr := crypto.CreateAddress2(caller, salt.Bytes32(), inithash)
t.lookupAccount(addr)
t.created[addr] = true
}
}
@ -141,12 +175,79 @@ func (t *prestateTracer) CaptureTxStart(gasLimit uint64) {
t.gasLimit = gasLimit
}
func (t *prestateTracer) CaptureTxEnd(restGas uint64) {}
func (t *prestateTracer) CaptureTxEnd(restGas uint64) {
if !t.config.DiffMode {
return
}
for addr, state := range t.pre {
// the deleted account's state is pruned
if _, ok := t.deleted[addr]; ok {
continue
}
modified := false
postAccount := &account{Storage: make(map[common.Hash]common.Hash)}
newBalance := t.env.StateDB.GetBalance(addr)
newNonce := t.env.StateDB.GetNonce(addr)
newCode := t.env.StateDB.GetCode(addr)
if newBalance.Cmp(t.pre[addr].Balance) != 0 {
modified = true
postAccount.Balance = newBalance
}
if newNonce != t.pre[addr].Nonce {
modified = true
postAccount.Nonce = newNonce
}
if !bytes.Equal(newCode, t.pre[addr].Code) {
modified = true
postAccount.Code = newCode
}
for key, val := range state.Storage {
// don't include the empty slot
if val == (common.Hash{}) {
delete(t.pre[addr].Storage, key)
}
newVal := t.env.StateDB.GetState(addr, key)
if val != newVal {
modified = true
if newVal != (common.Hash{}) {
postAccount.Storage[key] = newVal
}
}
}
if modified {
t.post[addr] = postAccount
} else {
// if state is not modified, then no need to include into the pre state
delete(t.pre, addr)
}
}
// the new created contracts' prestate were empty, so delete them
for a := range t.created {
// the created contract maybe exists in statedb before the creating tx
if s := t.pre[a]; s.Balance.Cmp(big.NewInt(0)) == 0 && len(s.Storage) == 0 && len(s.Code) == 0 {
delete(t.pre, a)
}
}
}
// GetResult returns the json-encoded nested list of call traces, and any
// error arising from the encoding or forceful termination (via `Stop`).
func (t *prestateTracer) GetResult() (json.RawMessage, error) {
res, err := json.Marshal(t.prestate)
var res []byte
var err error
if t.config.DiffMode {
res, err = json.Marshal(struct {
Pre state `json:"pre"`
Post state `json:"post"`
}{t.pre, t.post})
} else {
res, err = json.Marshal(t.pre)
}
if err != nil {
return nil, err
}
@ -162,10 +263,11 @@ func (t *prestateTracer) Stop(err error) {
// lookupAccount fetches details of an account and adds it to the prestate
// if it doesn't exist there.
func (t *prestateTracer) lookupAccount(addr common.Address) {
if _, ok := t.prestate[addr]; ok {
if _, ok := t.pre[addr]; ok {
return
}
t.prestate[addr] = &account{
t.pre[addr] = &account{
Balance: t.env.StateDB.GetBalance(addr),
Nonce: t.env.StateDB.GetNonce(addr),
Code: t.env.StateDB.GetCode(addr),
@ -177,8 +279,8 @@ func (t *prestateTracer) lookupAccount(addr common.Address) {
// it to the prestate of the given contract. It assumes `lookupAccount`
// has been performed on the contract before.
func (t *prestateTracer) lookupStorage(addr common.Address, key common.Hash) {
if _, ok := t.prestate[addr].Storage[key]; ok {
if _, ok := t.pre[addr].Storage[key]; ok {
return
}
t.prestate[addr].Storage[key] = t.env.StateDB.GetState(addr, key)
t.pre[addr].Storage[key] = t.env.StateDB.GetState(addr, key)
}

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