/
transition.go
359 lines (331 loc) · 11.4 KB
/
transition.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
// Copyright 2020 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package t8ntool
import (
"encoding/json"
"errors"
"fmt"
"math/big"
"os"
"path"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/consensus/misc/eip1559"
"github.com/ethereum/go-ethereum/core/state"
"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/eth/tracers/logger"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/tests"
"github.com/urfave/cli/v2"
)
const (
ErrorEVM = 2
ErrorConfig = 3
ErrorMissingBlockhash = 4
ErrorJson = 10
ErrorIO = 11
ErrorRlp = 12
stdinSelector = "stdin"
)
type NumberedError struct {
errorCode int
err error
}
func NewError(errorCode int, err error) *NumberedError {
return &NumberedError{errorCode, err}
}
func (n *NumberedError) Error() string {
return fmt.Sprintf("ERROR(%d): %v", n.errorCode, n.err.Error())
}
func (n *NumberedError) ExitCode() int {
return n.errorCode
}
// compile-time conformance test
var (
_ cli.ExitCoder = (*NumberedError)(nil)
)
type input struct {
Alloc types.GenesisAlloc `json:"alloc,omitempty"`
Env *stEnv `json:"env,omitempty"`
Txs []*txWithKey `json:"txs,omitempty"`
TxRlp string `json:"txsRlp,omitempty"`
}
func Transition(ctx *cli.Context) error {
var getTracer = func(txIndex int, txHash common.Hash) (vm.EVMLogger, error) { return nil, nil }
baseDir, err := createBasedir(ctx)
if err != nil {
return NewError(ErrorIO, fmt.Errorf("failed creating output basedir: %v", err))
}
if ctx.Bool(TraceFlag.Name) { // JSON opcode tracing
// Configure the EVM logger
logConfig := &logger.Config{
DisableStack: ctx.Bool(TraceDisableStackFlag.Name),
EnableMemory: ctx.Bool(TraceEnableMemoryFlag.Name),
EnableReturnData: ctx.Bool(TraceEnableReturnDataFlag.Name),
Debug: true,
}
getTracer = func(txIndex int, txHash common.Hash) (vm.EVMLogger, error) {
traceFile, err := os.Create(path.Join(baseDir, fmt.Sprintf("trace-%d-%v.jsonl", txIndex, txHash.String())))
if err != nil {
return nil, NewError(ErrorIO, fmt.Errorf("failed creating trace-file: %v", err))
}
return &traceWriter{logger.NewJSONLogger(logConfig, traceFile), traceFile}, nil
}
} else if ctx.IsSet(TraceTracerFlag.Name) {
var config json.RawMessage
if ctx.IsSet(TraceTracerConfigFlag.Name) {
config = []byte(ctx.String(TraceTracerConfigFlag.Name))
}
getTracer = func(txIndex int, txHash common.Hash) (vm.EVMLogger, error) {
traceFile, err := os.Create(path.Join(baseDir, fmt.Sprintf("trace-%d-%v.json", txIndex, txHash.String())))
if err != nil {
return nil, NewError(ErrorIO, fmt.Errorf("failed creating trace-file: %v", err))
}
tracer, err := tracers.DefaultDirectory.New(ctx.String(TraceTracerFlag.Name), nil, config)
if err != nil {
return nil, NewError(ErrorConfig, fmt.Errorf("failed instantiating tracer: %w", err))
}
return &traceWriter{tracer, traceFile}, nil
}
}
// We need to load three things: alloc, env and transactions. May be either in
// stdin input or in files.
// Check if anything needs to be read from stdin
var (
prestate Prestate
txIt txIterator // txs to apply
allocStr = ctx.String(InputAllocFlag.Name)
envStr = ctx.String(InputEnvFlag.Name)
txStr = ctx.String(InputTxsFlag.Name)
inputData = &input{}
)
// Figure out the prestate alloc
if allocStr == stdinSelector || envStr == stdinSelector || txStr == stdinSelector {
decoder := json.NewDecoder(os.Stdin)
if err := decoder.Decode(inputData); err != nil {
return NewError(ErrorJson, fmt.Errorf("failed unmarshaling stdin: %v", err))
}
}
if allocStr != stdinSelector {
if err := readFile(allocStr, "alloc", &inputData.Alloc); err != nil {
return err
}
}
prestate.Pre = inputData.Alloc
// Set the block environment
if envStr != stdinSelector {
var env stEnv
if err := readFile(envStr, "env", &env); err != nil {
return err
}
inputData.Env = &env
}
prestate.Env = *inputData.Env
vmConfig := vm.Config{}
// Construct the chainconfig
var chainConfig *params.ChainConfig
if cConf, extraEips, err := tests.GetChainConfig(ctx.String(ForknameFlag.Name)); err != nil {
return NewError(ErrorConfig, fmt.Errorf("failed constructing chain configuration: %v", err))
} else {
chainConfig = cConf
vmConfig.ExtraEips = extraEips
}
// Set the chain id
chainConfig.ChainID = big.NewInt(ctx.Int64(ChainIDFlag.Name))
if txIt, err = loadTransactions(txStr, inputData, prestate.Env, chainConfig); err != nil {
return err
}
if err := applyLondonChecks(&prestate.Env, chainConfig); err != nil {
return err
}
if err := applyShanghaiChecks(&prestate.Env, chainConfig); err != nil {
return err
}
if err := applyMergeChecks(&prestate.Env, chainConfig); err != nil {
return err
}
if err := applyCancunChecks(&prestate.Env, chainConfig); err != nil {
return err
}
// Run the test and aggregate the result
s, result, body, err := prestate.Apply(vmConfig, chainConfig, txIt, ctx.Int64(RewardFlag.Name), getTracer)
if err != nil {
return err
}
// Dump the execution result
collector := make(Alloc)
s.DumpToCollector(collector, nil)
return dispatchOutput(ctx, baseDir, result, collector, body)
}
func applyLondonChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsLondon(big.NewInt(int64(env.Number))) {
return nil
}
// Sanity check, to not `panic` in state_transition
if env.BaseFee != nil {
// Already set, base fee has precedent over parent base fee.
return nil
}
if env.ParentBaseFee == nil || env.Number == 0 {
return NewError(ErrorConfig, errors.New("EIP-1559 config but missing 'currentBaseFee' in env section"))
}
env.BaseFee = eip1559.CalcBaseFee(chainConfig, &types.Header{
Number: new(big.Int).SetUint64(env.Number - 1),
BaseFee: env.ParentBaseFee,
GasUsed: env.ParentGasUsed,
GasLimit: env.ParentGasLimit,
})
return nil
}
func applyShanghaiChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsShanghai(big.NewInt(int64(env.Number)), env.Timestamp) {
return nil
}
if env.Withdrawals == nil {
return NewError(ErrorConfig, errors.New("Shanghai config but missing 'withdrawals' in env section"))
}
return nil
}
func applyMergeChecks(env *stEnv, chainConfig *params.ChainConfig) error {
isMerged := chainConfig.TerminalTotalDifficulty != nil && chainConfig.TerminalTotalDifficulty.BitLen() == 0
if !isMerged {
// pre-merge: If difficulty was not provided by caller, we need to calculate it.
if env.Difficulty != nil {
// already set
return nil
}
switch {
case env.ParentDifficulty == nil:
return NewError(ErrorConfig, errors.New("currentDifficulty was not provided, and cannot be calculated due to missing parentDifficulty"))
case env.Number == 0:
return NewError(ErrorConfig, errors.New("currentDifficulty needs to be provided for block number 0"))
case env.Timestamp <= env.ParentTimestamp:
return NewError(ErrorConfig, fmt.Errorf("currentDifficulty cannot be calculated -- currentTime (%d) needs to be after parent time (%d)",
env.Timestamp, env.ParentTimestamp))
}
env.Difficulty = calcDifficulty(chainConfig, env.Number, env.Timestamp,
env.ParentTimestamp, env.ParentDifficulty, env.ParentUncleHash)
return nil
}
// post-merge:
// - random must be supplied
// - difficulty must be zero
switch {
case env.Random == nil:
return NewError(ErrorConfig, errors.New("post-merge requires currentRandom to be defined in env"))
case env.Difficulty != nil && env.Difficulty.BitLen() != 0:
return NewError(ErrorConfig, errors.New("post-merge difficulty must be zero (or omitted) in env"))
}
env.Difficulty = nil
return nil
}
func applyCancunChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsCancun(big.NewInt(int64(env.Number)), env.Timestamp) {
env.ParentBeaconBlockRoot = nil // un-set it if it has been set too early
return nil
}
// Post-cancun
// We require EIP-4788 beacon root to be set in the env
if env.ParentBeaconBlockRoot == nil {
return NewError(ErrorConfig, errors.New("post-cancun env requires parentBeaconBlockRoot to be set"))
}
return nil
}
type Alloc map[common.Address]types.Account
func (g Alloc) OnRoot(common.Hash) {}
func (g Alloc) OnAccount(addr *common.Address, dumpAccount state.DumpAccount) {
if addr == nil {
return
}
balance, _ := new(big.Int).SetString(dumpAccount.Balance, 0)
var storage map[common.Hash]common.Hash
if dumpAccount.Storage != nil {
storage = make(map[common.Hash]common.Hash)
for k, v := range dumpAccount.Storage {
storage[k] = common.HexToHash(v)
}
}
genesisAccount := types.Account{
Code: dumpAccount.Code,
Storage: storage,
Balance: balance,
Nonce: dumpAccount.Nonce,
}
g[*addr] = genesisAccount
}
// saveFile marshals the object to the given file
func saveFile(baseDir, filename string, data interface{}) error {
b, err := json.MarshalIndent(data, "", " ")
if err != nil {
return NewError(ErrorJson, fmt.Errorf("failed marshalling output: %v", err))
}
location := path.Join(baseDir, filename)
if err = os.WriteFile(location, b, 0644); err != nil {
return NewError(ErrorIO, fmt.Errorf("failed writing output: %v", err))
}
log.Info("Wrote file", "file", location)
return nil
}
// dispatchOutput writes the output data to either stderr or stdout, or to the specified
// files
func dispatchOutput(ctx *cli.Context, baseDir string, result *ExecutionResult, alloc Alloc, body hexutil.Bytes) error {
stdOutObject := make(map[string]interface{})
stdErrObject := make(map[string]interface{})
dispatch := func(baseDir, fName, name string, obj interface{}) error {
switch fName {
case "stdout":
stdOutObject[name] = obj
case "stderr":
stdErrObject[name] = obj
case "":
// don't save
default: // save to file
if err := saveFile(baseDir, fName, obj); err != nil {
return err
}
}
return nil
}
if err := dispatch(baseDir, ctx.String(OutputAllocFlag.Name), "alloc", alloc); err != nil {
return err
}
if err := dispatch(baseDir, ctx.String(OutputResultFlag.Name), "result", result); err != nil {
return err
}
if err := dispatch(baseDir, ctx.String(OutputBodyFlag.Name), "body", body); err != nil {
return err
}
if len(stdOutObject) > 0 {
b, err := json.MarshalIndent(stdOutObject, "", " ")
if err != nil {
return NewError(ErrorJson, fmt.Errorf("failed marshalling output: %v", err))
}
os.Stdout.Write(b)
os.Stdout.WriteString("\n")
}
if len(stdErrObject) > 0 {
b, err := json.MarshalIndent(stdErrObject, "", " ")
if err != nil {
return NewError(ErrorJson, fmt.Errorf("failed marshalling output: %v", err))
}
os.Stderr.Write(b)
os.Stderr.WriteString("\n")
}
return nil
}