-
Notifications
You must be signed in to change notification settings - Fork 8
/
backend_utils.go
409 lines (367 loc) · 13.4 KB
/
backend_utils.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
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program 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 Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package eth
import (
"bytes"
"context"
"encoding/json"
"fmt"
"math/big"
nodeiter "github.com/cerc-io/go-eth-state-node-iterator"
"github.com/ethereum/go-ethereum"
"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/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
sdtrie "github.com/ethereum/go-ethereum/statediff/trie_helpers"
sdtypes "github.com/ethereum/go-ethereum/statediff/types"
"github.com/ethereum/go-ethereum/trie"
)
var nullHashBytes = common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000000")
var emptyCodeHash = crypto.Keccak256([]byte{})
// RPCMarshalHeader converts the given header to the RPC output.
// This function is eth/internal so we have to make our own version here...
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
headerMap := map[string]interface{}{
"number": (*hexutil.Big)(head.Number),
"hash": head.Hash(),
"parentHash": head.ParentHash,
"nonce": head.Nonce,
"mixHash": head.MixDigest,
"sha3Uncles": head.UncleHash,
"logsBloom": head.Bloom,
"stateRoot": head.Root,
"miner": head.Coinbase,
"difficulty": (*hexutil.Big)(head.Difficulty),
"extraData": hexutil.Bytes(head.Extra),
"size": hexutil.Uint64(head.Size()),
"gasLimit": hexutil.Uint64(head.GasLimit),
"gasUsed": hexutil.Uint64(head.GasUsed),
"timestamp": hexutil.Uint64(head.Time),
"transactionsRoot": head.TxHash,
"receiptsRoot": head.ReceiptHash,
}
if head.BaseFee != nil {
headerMap["baseFee"] = head.BaseFee
}
return headerMap
}
// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := RPCMarshalHeader(block.Header())
fields["size"] = hexutil.Uint64(block.Size())
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
return tx.Hash(), nil
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return NewRPCTransactionFromBlockHash(block, tx.Hash()), nil
}
}
txs := block.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range txs {
if transactions[i], err = formatTx(tx); err != nil {
return nil, err
}
}
fields["transactions"] = transactions
}
uncles := block.Uncles()
uncleHashes := make([]common.Hash, len(uncles))
for i, uncle := range uncles {
uncleHashes[i] = uncle.Hash()
}
fields["uncles"] = uncleHashes
return fields, nil
}
// RPCMarshalBlockWithUncleHashes marshals the block with the provided uncle hashes
func RPCMarshalBlockWithUncleHashes(block *types.Block, uncleHashes []common.Hash, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := RPCMarshalHeader(block.Header())
fields["size"] = hexutil.Uint64(block.Size())
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
return tx.Hash(), nil
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return NewRPCTransactionFromBlockHash(block, tx.Hash()), nil
}
}
txs := block.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range txs {
if transactions[i], err = formatTx(tx); err != nil {
return nil, err
}
}
fields["transactions"] = transactions
}
fields["uncles"] = uncleHashes
return fields, nil
}
// NewRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation.
func NewRPCTransactionFromBlockHash(b *types.Block, hash common.Hash) *RPCTransaction {
for idx, tx := range b.Transactions() {
if tx.Hash() == hash {
return newRPCTransactionFromBlockIndex(b, uint64(idx))
}
}
return nil
}
// NewRPCTransaction returns a transaction that will serialize to the RPC
// representation, with the given location metadata set (if available).
func NewRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64, baseFee *big.Int) *RPCTransaction {
var signer types.Signer
if tx.Protected() {
signer = types.LatestSignerForChainID(tx.ChainId())
} else {
signer = types.HomesteadSigner{}
}
from, _ := types.Sender(signer, tx)
v, r, s := tx.RawSignatureValues()
result := &RPCTransaction{
From: from,
Gas: hexutil.Uint64(tx.Gas()),
GasPrice: (*hexutil.Big)(tx.GasPrice()),
Hash: tx.Hash(),
Input: hexutil.Bytes(tx.Data()), // somehow this is ending up `nil`
Nonce: hexutil.Uint64(tx.Nonce()),
To: tx.To(),
Value: (*hexutil.Big)(tx.Value()),
Type: hexutil.Uint64(tx.Type()),
V: (*hexutil.Big)(v),
R: (*hexutil.Big)(r),
S: (*hexutil.Big)(s),
}
if blockHash != (common.Hash{}) {
result.BlockHash = &blockHash
result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
result.TransactionIndex = (*hexutil.Uint64)(&index)
}
switch tx.Type() {
case types.LegacyTxType:
// if a legacy transaction has an EIP-155 chain id, include it explicitly
if id := tx.ChainId(); id.Sign() != 0 {
result.ChainID = (*hexutil.Big)(id)
}
case types.AccessListTxType:
al := tx.AccessList()
result.Accesses = &al
result.ChainID = (*hexutil.Big)(tx.ChainId())
case types.DynamicFeeTxType:
al := tx.AccessList()
result.Accesses = &al
result.ChainID = (*hexutil.Big)(tx.ChainId())
result.GasFeeCap = (*hexutil.Big)(tx.GasFeeCap())
result.GasTipCap = (*hexutil.Big)(tx.GasTipCap())
// if the transaction has been mined, compute the effective gas price
if baseFee != nil && blockHash != (common.Hash{}) {
// price = min(tip, gasFeeCap - baseFee) + baseFee
price := math.BigMin(new(big.Int).Add(tx.GasTipCap(), baseFee), tx.GasFeeCap())
result.GasPrice = (*hexutil.Big)(price)
} else {
result.GasPrice = nil
}
}
return result
}
type rpcBlock struct {
Hash common.Hash `json:"hash"`
Transactions []rpcTransaction `json:"transactions"`
UncleHashes []common.Hash `json:"uncles"`
}
type rpcTransaction struct {
tx *types.Transaction
txExtraInfo
}
type txExtraInfo struct {
BlockNumber *string `json:"blockNumber,omitempty"`
BlockHash *common.Hash `json:"blockHash,omitempty"`
From *common.Address `json:"from,omitempty"`
}
func (tx *rpcTransaction) UnmarshalJSON(msg []byte) error {
if err := json.Unmarshal(msg, &tx.tx); err != nil {
return err
}
return json.Unmarshal(msg, &tx.txExtraInfo)
}
func getBlockAndUncleHashes(cli *rpc.Client, ctx context.Context, method string, args ...interface{}) (*types.Block, []common.Hash, error) {
var raw json.RawMessage
err := cli.CallContext(ctx, &raw, method, args...)
if err != nil {
return nil, nil, err
} else if len(raw) == 0 {
return nil, nil, ethereum.NotFound
}
// Decode header and transactions.
var head *types.Header
var body rpcBlock
if err := json.Unmarshal(raw, &head); err != nil {
return nil, nil, err
}
if err := json.Unmarshal(raw, &body); err != nil {
return nil, nil, err
}
// Quick-verify transaction and uncle lists. This mostly helps with debugging the server.
if head.UncleHash == types.EmptyUncleHash && len(body.UncleHashes) > 0 {
return nil, nil, fmt.Errorf("server returned non-empty uncle list but block header indicates no uncles")
}
if head.UncleHash != types.EmptyUncleHash && len(body.UncleHashes) == 0 {
return nil, nil, fmt.Errorf("server returned empty uncle list but block header indicates uncles")
}
if head.TxHash == types.EmptyRootHash && len(body.Transactions) > 0 {
return nil, nil, fmt.Errorf("server returned non-empty transaction list but block header indicates no transactions")
}
if head.TxHash != types.EmptyRootHash && len(body.Transactions) == 0 {
return nil, nil, fmt.Errorf("server returned empty transaction list but block header indicates transactions")
}
txs := make([]*types.Transaction, len(body.Transactions))
for i, tx := range body.Transactions {
txs[i] = tx.tx
}
return types.NewBlockWithHeader(head).WithBody(txs, nil), body.UncleHashes, nil
}
// newRPCRawTransactionFromBlockIndex returns the bytes of a transaction given a block and a transaction index.
func newRPCRawTransactionFromBlockIndex(b *types.Block, index uint64) hexutil.Bytes {
txs := b.Transactions()
if index >= uint64(len(txs)) {
return nil
}
blob, _ := rlp.EncodeToBytes(txs[index])
return blob
}
// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation.
func newRPCTransactionFromBlockIndex(b *types.Block, index uint64) *RPCTransaction {
txs := b.Transactions()
if index >= uint64(len(txs)) {
return nil
}
return NewRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index, b.BaseFee())
}
func toFilterArg(q ethereum.FilterQuery) (interface{}, error) {
arg := map[string]interface{}{
"address": q.Addresses,
"topics": q.Topics,
}
if q.BlockHash != nil {
arg["blockHash"] = *q.BlockHash
if q.FromBlock != nil || q.ToBlock != nil {
return nil, fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock")
}
} else {
if q.FromBlock == nil {
arg["fromBlock"] = "0x0"
} else {
arg["fromBlock"] = toBlockNumArg(q.FromBlock)
}
arg["toBlock"] = toBlockNumArg(q.ToBlock)
}
return arg, nil
}
func toBlockNumArg(number *big.Int) string {
if number == nil {
return "latest"
}
return hexutil.EncodeBig(number)
}
func getIteratorAtPath(t state.Trie, startKey []byte) (trie.NodeIterator, int64) {
startTime := makeTimestamp()
var it trie.NodeIterator
if len(startKey)%2 != 0 {
// Zero-pad for odd-length keys, required by HexToKeyBytes()
startKey = append(startKey, 0)
it = t.NodeIterator(nodeiter.HexToKeyBytes(startKey))
} else {
it = t.NodeIterator(nodeiter.HexToKeyBytes(startKey))
// Step to the required node (not required if original startKey was odd-length)
it.Next(true)
}
return it, makeTimestamp() - startTime
}
func fillSliceNodeData(
ethDB ethdb.KeyValueReader,
nodesMap map[string]string,
leavesMap map[string]GetSliceResponseAccount,
node sdtypes.StateNode,
nodeElements []interface{},
storage bool,
) (int64, error) {
// Populate the nodes map
nodeValHash := crypto.Keccak256Hash(node.NodeValue)
nodesMap[common.Bytes2Hex(nodeValHash.Bytes())] = common.Bytes2Hex(node.NodeValue)
// Extract account data if it's a Leaf node
leafStartTime := makeTimestamp()
if node.NodeType == sdtypes.Leaf && !storage {
stateLeafKey, storageRoot, code, err := extractContractAccountInfo(ethDB, node, nodeElements)
if err != nil {
return 0, fmt.Errorf("GetSlice account lookup error: %s", err.Error())
}
if len(code) > 0 {
// Populate the leaves map
leavesMap[stateLeafKey] = GetSliceResponseAccount{
StorageRoot: storageRoot,
EVMCode: common.Bytes2Hex(code),
}
}
}
return makeTimestamp() - leafStartTime, nil
}
func extractContractAccountInfo(ethDB ethdb.KeyValueReader, node sdtypes.StateNode, nodeElements []interface{}) (string, string, []byte, error) {
var account types.StateAccount
if err := rlp.DecodeBytes(nodeElements[1].([]byte), &account); err != nil {
return "", "", nil, fmt.Errorf("error decoding account for leaf node at path %x nerror: %v", node.Path, err)
}
if bytes.Equal(account.CodeHash, emptyCodeHash) {
return "", "", nil, nil
}
// Extract state leaf key
partialPath := trie.CompactToHex(nodeElements[0].([]byte))
valueNodePath := append(node.Path, partialPath...)
encodedPath := trie.HexToCompact(valueNodePath)
leafKey := encodedPath[1:]
stateLeafKeyString := common.BytesToHash(leafKey).String()
storageRootString := account.Root.String()
// Extract codeHash and get code
codeHash := common.BytesToHash(account.CodeHash)
codeBytes := rawdb.ReadCode(ethDB, codeHash)
return stateLeafKeyString, storageRootString, codeBytes, nil
}
func ResolveNode(path []byte, node []byte, trieDB *trie.Database) (sdtypes.StateNode, []interface{}, error) {
nodePath := make([]byte, len(path))
copy(nodePath, path)
var nodeElements []interface{}
if err := rlp.DecodeBytes(node, &nodeElements); err != nil {
return sdtypes.StateNode{}, nil, err
}
ty, err := sdtrie.CheckKeyType(nodeElements)
if err != nil {
return sdtypes.StateNode{}, nil, err
}
return sdtypes.StateNode{
NodeType: ty,
Path: nodePath,
NodeValue: node,
}, nodeElements, nil
}