forked from ava-labs/coreth
-
Notifications
You must be signed in to change notification settings - Fork 0
/
service.go
494 lines (413 loc) · 13.6 KB
/
service.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
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package evm
import (
"context"
"errors"
"fmt"
"math/big"
"net/http"
"github.com/MetalBlockchain/metalgo/api"
"github.com/MetalBlockchain/metalgo/ids"
"github.com/MetalBlockchain/metalgo/utils/crypto/secp256k1"
"github.com/MetalBlockchain/metalgo/utils/formatting"
"github.com/MetalBlockchain/metalgo/utils/json"
"github.com/MetalBlockchain/metalgo/utils/set"
"github.com/MetalBlockchain/coreth/params"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/log"
)
// test constants
const (
GenesisTestAddr = "0x751a0b96e1042bee789452ecb20253fba40dbe85"
GenesisTestKey = "0xabd71b35d559563fea757f0f5edbde286fb8c043105b15abb7cd57189306d7d1"
// Max number of addresses that can be passed in as argument to GetUTXOs
maxGetUTXOsAddrs = 1024
)
var (
errNoAddresses = errors.New("no addresses provided")
errNoSourceChain = errors.New("no source chain provided")
errNilTxID = errors.New("nil transaction ID")
errMissingPrivateKey = errors.New("argument 'privateKey' not given")
initialBaseFee = big.NewInt(params.ApricotPhase3InitialBaseFee)
)
// SnowmanAPI introduces snowman specific functionality to the evm
type SnowmanAPI struct{ vm *VM }
// GetAcceptedFrontReply defines the reply that will be sent from the
// GetAcceptedFront API call
type GetAcceptedFrontReply struct {
Hash common.Hash `json:"hash"`
Number *big.Int `json:"number"`
}
// GetAcceptedFront returns the last accepted block's hash and height
func (api *SnowmanAPI) GetAcceptedFront(ctx context.Context) (*GetAcceptedFrontReply, error) {
blk := api.vm.blockChain.LastConsensusAcceptedBlock()
return &GetAcceptedFrontReply{
Hash: blk.Hash(),
Number: blk.Number(),
}, nil
}
// IssueBlock to the chain
func (api *SnowmanAPI) IssueBlock(ctx context.Context) error {
log.Info("Issuing a new block")
api.vm.builder.signalTxsReady()
return nil
}
// AvaxAPI offers Avalanche network related API methods
type AvaxAPI struct{ vm *VM }
// parseAssetID parses an assetID string into an ID
func (service *AvaxAPI) parseAssetID(assetID string) (ids.ID, error) {
if assetID == "" {
return ids.ID{}, fmt.Errorf("assetID is required")
} else if assetID == "AVAX" {
return service.vm.ctx.AVAXAssetID, nil
} else {
return ids.FromString(assetID)
}
}
type VersionReply struct {
Version string `json:"version"`
}
// ClientVersion returns the version of the VM running
func (service *AvaxAPI) Version(r *http.Request, args *struct{}, reply *VersionReply) error {
reply.Version = Version
return nil
}
// ExportKeyArgs are arguments for ExportKey
type ExportKeyArgs struct {
api.UserPass
Address string `json:"address"`
}
// ExportKeyReply is the response for ExportKey
type ExportKeyReply struct {
// The decrypted PrivateKey for the Address provided in the arguments
PrivateKey *secp256k1.PrivateKey `json:"privateKey"`
PrivateKeyHex string `json:"privateKeyHex"`
}
// ExportKey returns a private key from the provided user
func (service *AvaxAPI) ExportKey(r *http.Request, args *ExportKeyArgs, reply *ExportKeyReply) error {
log.Info("EVM: ExportKey called")
address, err := ParseEthAddress(args.Address)
if err != nil {
return fmt.Errorf("couldn't parse %s to address: %s", args.Address, err)
}
db, err := service.vm.ctx.Keystore.GetDatabase(args.Username, args.Password)
if err != nil {
return fmt.Errorf("problem retrieving user '%s': %w", args.Username, err)
}
defer db.Close()
user := user{
secpFactory: &service.vm.secpFactory,
db: db,
}
reply.PrivateKey, err = user.getKey(address)
if err != nil {
return fmt.Errorf("problem retrieving private key: %w", err)
}
reply.PrivateKeyHex = hexutil.Encode(reply.PrivateKey.Bytes())
return nil
}
// ImportKeyArgs are arguments for ImportKey
type ImportKeyArgs struct {
api.UserPass
PrivateKey *secp256k1.PrivateKey `json:"privateKey"`
}
// ImportKey adds a private key to the provided user
func (service *AvaxAPI) ImportKey(r *http.Request, args *ImportKeyArgs, reply *api.JSONAddress) error {
log.Info("EVM: ImportKey called", "username", args.Username)
if args.PrivateKey == nil {
return errMissingPrivateKey
}
reply.Address = GetEthAddress(args.PrivateKey).Hex()
db, err := service.vm.ctx.Keystore.GetDatabase(args.Username, args.Password)
if err != nil {
return fmt.Errorf("problem retrieving data: %w", err)
}
defer db.Close()
user := user{
secpFactory: &service.vm.secpFactory,
db: db,
}
if err := user.putAddress(args.PrivateKey); err != nil {
return fmt.Errorf("problem saving key %w", err)
}
return nil
}
// ImportArgs are arguments for passing into Import requests
type ImportArgs struct {
api.UserPass
// Fee that should be used when creating the tx
BaseFee *hexutil.Big `json:"baseFee"`
// Chain the funds are coming from
SourceChain string `json:"sourceChain"`
// The address that will receive the imported funds
To common.Address `json:"to"`
}
// ImportAVAX is a deprecated name for Import.
func (service *AvaxAPI) ImportAVAX(_ *http.Request, args *ImportArgs, response *api.JSONTxID) error {
return service.Import(nil, args, response)
}
// Import issues a transaction to import AVAX from the X-chain. The AVAX
// must have already been exported from the X-Chain.
func (service *AvaxAPI) Import(_ *http.Request, args *ImportArgs, response *api.JSONTxID) error {
log.Info("EVM: ImportAVAX called")
chainID, err := service.vm.ctx.BCLookup.Lookup(args.SourceChain)
if err != nil {
return fmt.Errorf("problem parsing chainID %q: %w", args.SourceChain, err)
}
// Get the user's info
db, err := service.vm.ctx.Keystore.GetDatabase(args.Username, args.Password)
if err != nil {
return fmt.Errorf("couldn't get user '%s': %w", args.Username, err)
}
defer db.Close()
user := user{
secpFactory: &service.vm.secpFactory,
db: db,
}
privKeys, err := user.getKeys()
if err != nil { // Get keys
return fmt.Errorf("couldn't get keys controlled by the user: %w", err)
}
var baseFee *big.Int
if args.BaseFee == nil {
// Get the base fee to use
baseFee, err = service.vm.estimateBaseFee(context.Background())
if err != nil {
return err
}
} else {
baseFee = args.BaseFee.ToInt()
}
tx, err := service.vm.newImportTx(chainID, args.To, baseFee, privKeys)
if err != nil {
return err
}
response.TxID = tx.ID()
return service.vm.issueTx(tx, true /*=local*/)
}
// ExportAVAXArgs are the arguments to ExportAVAX
type ExportAVAXArgs struct {
api.UserPass
// Fee that should be used when creating the tx
BaseFee *hexutil.Big `json:"baseFee"`
// Amount of asset to send
Amount json.Uint64 `json:"amount"`
// Chain the funds are going to. Optional. Used if To address does not
// include the chainID.
TargetChain string `json:"targetChain"`
// ID of the address that will receive the AVAX. This address may include
// the chainID, which is used to determine what the destination chain is.
To string `json:"to"`
}
// ExportAVAX exports AVAX from the C-Chain to the X-Chain
// It must be imported on the X-Chain to complete the transfer
func (service *AvaxAPI) ExportAVAX(_ *http.Request, args *ExportAVAXArgs, response *api.JSONTxID) error {
return service.Export(nil, &ExportArgs{
ExportAVAXArgs: *args,
AssetID: service.vm.ctx.AVAXAssetID.String(),
}, response)
}
// ExportArgs are the arguments to Export
type ExportArgs struct {
ExportAVAXArgs
// AssetID of the tokens
AssetID string `json:"assetID"`
}
// Export exports an asset from the C-Chain to the X-Chain
// It must be imported on the X-Chain to complete the transfer
func (service *AvaxAPI) Export(_ *http.Request, args *ExportArgs, response *api.JSONTxID) error {
log.Info("EVM: Export called")
assetID, err := service.parseAssetID(args.AssetID)
if err != nil {
return err
}
if args.Amount == 0 {
return errors.New("argument 'amount' must be > 0")
}
// Get the chainID and parse the to address
chainID, to, err := service.vm.ParseAddress(args.To)
if err != nil {
chainID, err = service.vm.ctx.BCLookup.Lookup(args.TargetChain)
if err != nil {
return err
}
to, err = ids.ShortFromString(args.To)
if err != nil {
return err
}
}
// Get this user's data
db, err := service.vm.ctx.Keystore.GetDatabase(args.Username, args.Password)
if err != nil {
return fmt.Errorf("problem retrieving user '%s': %w", args.Username, err)
}
defer db.Close()
user := user{
secpFactory: &service.vm.secpFactory,
db: db,
}
privKeys, err := user.getKeys()
if err != nil {
return fmt.Errorf("couldn't get addresses controlled by the user: %w", err)
}
var baseFee *big.Int
if args.BaseFee == nil {
// Get the base fee to use
baseFee, err = service.vm.estimateBaseFee(context.Background())
if err != nil {
return err
}
} else {
baseFee = args.BaseFee.ToInt()
}
// Create the transaction
tx, err := service.vm.newExportTx(
assetID, // AssetID
uint64(args.Amount), // Amount
chainID, // ID of the chain to send the funds to
to, // Address
baseFee,
privKeys, // Private keys
)
if err != nil {
return fmt.Errorf("couldn't create tx: %w", err)
}
response.TxID = tx.ID()
return service.vm.issueTx(tx, true /*=local*/)
}
// GetUTXOs gets all utxos for passed in addresses
func (service *AvaxAPI) GetUTXOs(r *http.Request, args *api.GetUTXOsArgs, reply *api.GetUTXOsReply) error {
log.Info("EVM: GetUTXOs called", "Addresses", args.Addresses)
if len(args.Addresses) == 0 {
return errNoAddresses
}
if len(args.Addresses) > maxGetUTXOsAddrs {
return fmt.Errorf("number of addresses given, %d, exceeds maximum, %d", len(args.Addresses), maxGetUTXOsAddrs)
}
if args.SourceChain == "" {
return errNoSourceChain
}
chainID, err := service.vm.ctx.BCLookup.Lookup(args.SourceChain)
if err != nil {
return fmt.Errorf("problem parsing source chainID %q: %w", args.SourceChain, err)
}
sourceChain := chainID
addrSet := set.Set[ids.ShortID]{}
for _, addrStr := range args.Addresses {
addr, err := service.vm.ParseServiceAddress(addrStr)
if err != nil {
return fmt.Errorf("couldn't parse address %q: %w", addrStr, err)
}
addrSet.Add(addr)
}
startAddr := ids.ShortEmpty
startUTXO := ids.Empty
if args.StartIndex.Address != "" || args.StartIndex.UTXO != "" {
startAddr, err = service.vm.ParseServiceAddress(args.StartIndex.Address)
if err != nil {
return fmt.Errorf("couldn't parse start index address %q: %w", args.StartIndex.Address, err)
}
startUTXO, err = ids.FromString(args.StartIndex.UTXO)
if err != nil {
return fmt.Errorf("couldn't parse start index utxo: %w", err)
}
}
utxos, endAddr, endUTXOID, err := service.vm.GetAtomicUTXOs(
sourceChain,
addrSet,
startAddr,
startUTXO,
int(args.Limit),
)
if err != nil {
return fmt.Errorf("problem retrieving UTXOs: %w", err)
}
reply.UTXOs = make([]string, len(utxos))
for i, utxo := range utxos {
b, err := service.vm.codec.Marshal(codecVersion, utxo)
if err != nil {
return fmt.Errorf("problem marshalling UTXO: %w", err)
}
str, err := formatting.Encode(args.Encoding, b)
if err != nil {
return fmt.Errorf("problem encoding utxo: %w", err)
}
reply.UTXOs[i] = str
}
endAddress, err := service.vm.FormatLocalAddress(endAddr)
if err != nil {
return fmt.Errorf("problem formatting address: %w", err)
}
reply.EndIndex.Address = endAddress
reply.EndIndex.UTXO = endUTXOID.String()
reply.NumFetched = json.Uint64(len(utxos))
reply.Encoding = args.Encoding
return nil
}
// IssueTx ...
func (service *AvaxAPI) IssueTx(r *http.Request, args *api.FormattedTx, response *api.JSONTxID) error {
log.Info("EVM: IssueTx called")
txBytes, err := formatting.Decode(args.Encoding, args.Tx)
if err != nil {
return fmt.Errorf("problem decoding transaction: %w", err)
}
tx := &Tx{}
if _, err := service.vm.codec.Unmarshal(txBytes, tx); err != nil {
return fmt.Errorf("problem parsing transaction: %w", err)
}
if err := tx.Sign(service.vm.codec, nil); err != nil {
return fmt.Errorf("problem initializing transaction: %w", err)
}
response.TxID = tx.ID()
return service.vm.issueTx(tx, true /*=local*/)
}
// GetAtomicTxStatusReply defines the GetAtomicTxStatus replies returned from the API
type GetAtomicTxStatusReply struct {
Status Status `json:"status"`
BlockHeight *json.Uint64 `json:"blockHeight,omitempty"`
}
// GetAtomicTxStatus returns the status of the specified transaction
func (service *AvaxAPI) GetAtomicTxStatus(r *http.Request, args *api.JSONTxID, reply *GetAtomicTxStatusReply) error {
log.Info("EVM: GetAtomicTxStatus called", "txID", args.TxID)
if args.TxID == ids.Empty {
return errNilTxID
}
_, status, height, _ := service.vm.getAtomicTx(args.TxID)
reply.Status = status
if status == Accepted {
jsonHeight := json.Uint64(height)
reply.BlockHeight = &jsonHeight
}
return nil
}
type FormattedTx struct {
api.FormattedTx
BlockHeight *json.Uint64 `json:"blockHeight,omitempty"`
}
// GetAtomicTx returns the specified transaction
func (service *AvaxAPI) GetAtomicTx(r *http.Request, args *api.GetTxArgs, reply *FormattedTx) error {
log.Info("EVM: GetAtomicTx called", "txID", args.TxID)
if args.TxID == ids.Empty {
return errNilTxID
}
tx, status, height, err := service.vm.getAtomicTx(args.TxID)
if err != nil {
return err
}
if status == Unknown {
return fmt.Errorf("could not find tx %s", args.TxID)
}
txBytes, err := formatting.Encode(args.Encoding, tx.SignedBytes())
if err != nil {
return err
}
reply.Tx = txBytes
reply.Encoding = args.Encoding
if status == Accepted {
jsonHeight := json.Uint64(height)
reply.BlockHeight = &jsonHeight
}
return nil
}