-
Notifications
You must be signed in to change notification settings - Fork 128
/
cli.js
executable file
·1532 lines (1408 loc) · 56.6 KB
/
cli.js
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
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/env node
// Works both in browser and node.js
require('dotenv').config();
const fs = require('fs');
const axios = require('axios');
const assert = require('assert');
const snarkjs = require('snarkjs');
const crypto = require('crypto');
const circomlib = require('circomlib');
const bigInt = snarkjs.bigInt;
const merkleTree = require('fixed-merkle-tree');
const Web3 = require('web3');
const Web3HttpProvider = require('web3-providers-http');
const buildGroth16 = require('websnark/src/groth16');
const websnarkUtils = require('websnark/src/utils');
const { toWei, fromWei, toBN, BN } = require('web3-utils');
const BigNumber = require('bignumber.js');
const config = require('./config');
const program = require('commander');
const { GasPriceOracle } = require('gas-price-oracle');
const SocksProxyAgent = require('socks-proxy-agent');
const is_ip_private = require('private-ip');
let web3, torPort, tornado, tornadoContract, tornadoInstance, circuit, proving_key, groth16, erc20, senderAccount, netId, netName, netSymbol, doNotSubmitTx, multiCall, privateRpc, subgraph;
let MERKLE_TREE_HEIGHT, ETH_AMOUNT, TOKEN_AMOUNT, PRIVATE_KEY;
/** Whether we are in a browser or node.js */
const inBrowser = typeof window !== 'undefined';
let isTestRPC = false;
/** Generate random number of specified byte length */
const rbigint = (nbytes) => snarkjs.bigInt.leBuff2int(crypto.randomBytes(nbytes));
/** Compute pedersen hash */
const pedersenHash = (data) => circomlib.babyJub.unpackPoint(circomlib.pedersenHash.hash(data))[0];
/** BigNumber to hex string of specified length */
function toHex(number, length = 32) {
const str = number instanceof Buffer ? number.toString('hex') : bigInt(number).toString(16);
return '0x' + str.padStart(length * 2, '0');
}
/** Remove Decimal without rounding with BigNumber */
function rmDecimalBN(bigNum, decimals = 6) {
return new BigNumber(bigNum).times(BigNumber(10).pow(decimals)).integerValue(BigNumber.ROUND_DOWN).div(BigNumber(10).pow(decimals)).toNumber();
}
/** Use MultiCall Contract */
async function useMultiCall(queryArray) {
const multiCallABI = require('./build/contracts/Multicall.abi.json');
const multiCallContract = new web3.eth.Contract(multiCallABI, multiCall);
const { returnData } = await multiCallContract.methods.aggregate(queryArray).call();
return returnData;
}
/** Display ETH account balance */
async function printETHBalance({ address, name }) {
const checkBalance = new BigNumber(await web3.eth.getBalance(address)).div(BigNumber(10).pow(18));
console.log(`${name} balance is`, rmDecimalBN(checkBalance), `${netSymbol}`);
}
/** Display ERC20 account balance */
async function printERC20Balance({ address, name, tokenAddress }) {
let tokenDecimals, tokenBalance, tokenName, tokenSymbol;
const erc20ContractJson = require('./build/contracts/ERC20Mock.json');
erc20 = tokenAddress ? new web3.eth.Contract(erc20ContractJson.abi, tokenAddress) : erc20;
if (!isTestRPC && !multiCall) {
const tokenCall = await useMultiCall([[tokenAddress, erc20.methods.balanceOf(address).encodeABI()], [tokenAddress, erc20.methods.decimals().encodeABI()], [tokenAddress, erc20.methods.name().encodeABI()], [tokenAddress, erc20.methods.symbol().encodeABI()]]);
tokenDecimals = parseInt(tokenCall[1]);
tokenBalance = new BigNumber(tokenCall[0]).div(BigNumber(10).pow(tokenDecimals));
tokenName = web3.eth.abi.decodeParameter('string', tokenCall[2]);
tokenSymbol = web3.eth.abi.decodeParameter('string', tokenCall[3]);
} else {
tokenDecimals = await erc20.methods.decimals().call();
tokenBalance = new BigNumber(await erc20.methods.balanceOf(address).call()).div(BigNumber(10).pow(tokenDecimals));
tokenName = await erc20.methods.name().call();
tokenSymbol = await erc20.methods.symbol().call();
}
console.log(`${name}`, tokenName, `Balance is`, rmDecimalBN(tokenBalance), tokenSymbol);
}
async function submitTransaction(signedTX) {
console.log("Submitting transaction to the remote node");
await web3.eth.sendSignedTransaction(signedTX)
.on('transactionHash', function (txHash) {
console.log(`View transaction on block explorer https://${getExplorerLink()}/tx/${txHash}`);
})
.on('error', function (e) {
console.error('on transactionHash error', e.message);
});
}
async function generateTransaction(to, encodedData, value = 0) {
const nonce = await web3.eth.getTransactionCount(senderAccount);
let gasPrice = await fetchGasPrice();
let gasLimit;
async function estimateGas() {
const fetchedGas = await web3.eth.estimateGas({
from : senderAccount,
to : to,
value : value,
nonce : nonce,
data : encodedData
});
const bumped = Math.floor(fetchedGas * 1.3);
return web3.utils.toHex(bumped);
}
if (encodedData) {
gasLimit = await estimateGas();
} else {
gasLimit = web3.utils.toHex(21000);
}
function txoptions() {
// Generate EIP-1559 transaction
if (netId == 1) {
return {
to : to,
value : value,
nonce : nonce,
maxFeePerGas : gasPrice,
maxPriorityFeePerGas : web3.utils.toHex(web3.utils.toWei('3', 'gwei')),
gas : gasLimit,
data : encodedData
}
} else if (netId == 5 || netId == 137 || netId == 43114) {
return {
to : to,
value : value,
nonce : nonce,
maxFeePerGas : gasPrice,
maxPriorityFeePerGas : gasPrice,
gas : gasLimit,
data : encodedData
}
} else {
return {
to : to,
value : value,
nonce : nonce,
gasPrice : gasPrice,
gas : gasLimit,
data : encodedData
}
}
}
const tx = txoptions();
const signed = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY);
if (!doNotSubmitTx) {
await submitTransaction(signed.rawTransaction);
} else {
console.log('\n=============Raw TX=================', '\n');
console.log(`Please submit this raw tx to https://${getExplorerLink()}/pushTx, or otherwise broadcast with node cli.js broadcast command.`, `\n`);
console.log(signed.rawTransaction, `\n`);
console.log('=====================================', '\n');
}
}
/**
* Create deposit object from secret and nullifier
*/
function createDeposit({ nullifier, secret }) {
const deposit = { nullifier, secret };
deposit.preimage = Buffer.concat([deposit.nullifier.leInt2Buff(31), deposit.secret.leInt2Buff(31)]);
deposit.commitment = pedersenHash(deposit.preimage);
deposit.commitmentHex = toHex(deposit.commitment);
deposit.nullifierHash = pedersenHash(deposit.nullifier.leInt2Buff(31));
deposit.nullifierHex = toHex(deposit.nullifierHash);
return deposit;
}
async function backupNote({ currency, amount, netId, note, noteString }) {
try {
await fs.writeFileSync(`./backup-tornado-${currency}-${amount}-${netId}-${note.slice(0, 10)}.txt`, noteString, 'utf8');
console.log("Backed up deposit note as", `./backup-tornado-${currency}-${amount}-${netId}-${note.slice(0, 10)}.txt`);
} catch (e) {
throw new Error('Writing backup note failed:', e);
}
}
async function backupInvoice({ currency, amount, netId, commitmentNote, invoiceString }) {
try {
await fs.writeFileSync(`./backup-tornadoInvoice-${currency}-${amount}-${netId}-${commitmentNote.slice(0, 10)}.txt`, invoiceString, 'utf8');
console.log("Backed up invoice as", `./backup-tornadoInvoice-${currency}-${amount}-${netId}-${commitmentNote.slice(0, 10)}.txt`)
} catch (e) {
throw new Error('Writing backup invoice failed:', e)
}
}
/**
* create a deposit invoice.
* @param currency Сurrency
* @param amount Deposit amount
*/
async function createInvoice({ currency, amount, chainId }) {
const deposit = createDeposit({
nullifier: rbigint(31),
secret: rbigint(31)
});
const note = toHex(deposit.preimage, 62);
const noteString = `tornado-${currency}-${amount}-${chainId}-${note}`;
console.log(`Your note: ${noteString}`);
const commitmentNote = toHex(deposit.commitment);
const invoiceString = `tornadoInvoice-${currency}-${amount}-${chainId}-${commitmentNote}`;
console.log(`Your invoice for deposit: ${invoiceString}`);
await backupNote({ currency, amount, netId: chainId, note, noteString });
await backupInvoice({ currency, amount, netId: chainId, commitmentNote, invoiceString });
return (noteString, invoiceString);
}
/**
* Make a deposit
* @param currency Сurrency
* @param amount Deposit amount
*/
async function deposit({ currency, amount, commitmentNote }) {
assert(senderAccount != null, 'Error! PRIVATE_KEY not found. Please provide PRIVATE_KEY in .env file if you deposit');
let commitment, noteString;
if (!commitmentNote) {
console.log("Creating new random deposit note");
const deposit = createDeposit({
nullifier: rbigint(31),
secret: rbigint(31)
});
const note = toHex(deposit.preimage, 62);
noteString = `tornado-${currency}-${amount}-${netId}-${note}`;
console.log(`Your note: ${noteString}`);
await backupNote({ currency, amount, netId, note, noteString });
commitment = toHex(deposit.commitment);
} else {
console.log("Using supplied invoice for deposit");
commitment = toHex(commitmentNote);
}
if (currency === netSymbol.toLowerCase()) {
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
const value = isTestRPC ? ETH_AMOUNT : fromDecimals({ amount, decimals: 18 });
console.log('Submitting deposit transaction');
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, commitment, []).encodeABI(), value);
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
} else {
// a token
await printERC20Balance({ address: tornadoContract._address, name: 'Tornado contract' });
await printERC20Balance({ address: senderAccount, name: 'Sender account' });
const decimals = isTestRPC ? 18 : config.deployments[`netId${netId}`][currency].decimals;
const tokenAmount = isTestRPC ? TOKEN_AMOUNT : fromDecimals({ amount, decimals });
if (isTestRPC) {
console.log('Minting some test tokens to deposit');
await generateTransaction(erc20Address, erc20.methods.mint(senderAccount, tokenAmount).encodeABI());
}
const allowance = await erc20.methods.allowance(senderAccount, tornado._address).call({ from: senderAccount });
console.log('Current allowance is', fromWei(allowance));
if (toBN(allowance).lt(toBN(tokenAmount))) {
console.log('Approving tokens for deposit');
await generateTransaction(erc20Address, erc20.methods.approve(tornado._address, tokenAmount).encodeABI());
}
console.log('Submitting deposit transaction');
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, commitment, []).encodeABI());
await printERC20Balance({ address: tornadoContract._address, name: 'Tornado contract' });
await printERC20Balance({ address: senderAccount, name: 'Sender account' });
}
if(!commitmentNote) {
return noteString;
}
}
/**
* Generate merkle tree for a deposit.
* Download deposit events from the tornado, reconstructs merkle tree, finds our deposit leaf
* in it and generates merkle proof
* @param deposit Deposit object
*/
async function generateMerkleProof(deposit, currency, amount) {
let leafIndex = -1;
// Get all deposit events from smart contract and assemble merkle tree from them
const cachedEvents = await fetchEvents({ type: 'deposit', currency, amount });
const leaves = cachedEvents
.sort((a, b) => a.leafIndex - b.leafIndex) // Sort events in chronological order
.map((e) => {
const index = toBN(e.leafIndex).toNumber();
if (toBN(e.commitment).eq(toBN(deposit.commitmentHex))) {
leafIndex = index;
}
return toBN(e.commitment).toString(10);
});
const tree = new merkleTree(MERKLE_TREE_HEIGHT, leaves);
// Validate that our data is correct
const root = tree.root();
let isValidRoot, isSpent;
if (!isTestRPC && !multiCall) {
const callContract = await useMultiCall([[tornadoContract._address, tornadoContract.methods.isKnownRoot(toHex(root)).encodeABI()], [tornadoContract._address, tornadoContract.methods.isSpent(toHex(deposit.nullifierHash)).encodeABI()]])
isValidRoot = web3.eth.abi.decodeParameter('bool', callContract[0]);
isSpent = web3.eth.abi.decodeParameter('bool', callContract[1]);
} else {
isValidRoot = await tornadoContract.methods.isKnownRoot(toHex(root)).call();
isSpent = await tornadoContract.methods.isSpent(toHex(deposit.nullifierHash)).call();
}
assert(isValidRoot === true, 'Merkle tree is corrupted');
assert(isSpent === false, 'The note is already spent');
assert(leafIndex >= 0, 'The deposit is not found in the tree');
// Compute merkle proof of our commitment
const { pathElements, pathIndices } = tree.path(leafIndex);
return { root, pathElements, pathIndices };
}
/**
* Generate SNARK proof for withdrawal
* @param deposit Deposit object
* @param recipient Funds recipient
* @param relayer Relayer address
* @param fee Relayer fee
* @param refund Receive ether for exchanged tokens
*/
async function generateProof({ deposit, currency, amount, recipient, relayerAddress = 0, fee = 0, refund = 0 }) {
// Compute merkle proof of our commitment
const { root, pathElements, pathIndices } = await generateMerkleProof(deposit, currency, amount);
// Prepare circuit input
const input = {
// Public snark inputs
root: root,
nullifierHash: deposit.nullifierHash,
recipient: bigInt(recipient),
relayer: bigInt(relayerAddress),
fee: bigInt(fee),
refund: bigInt(refund),
// Private snark inputs
nullifier: deposit.nullifier,
secret: deposit.secret,
pathElements: pathElements,
pathIndices: pathIndices
}
console.log('Generating SNARK proof');
console.time('Proof time');
const proofData = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key);
const { proof } = websnarkUtils.toSolidityInput(proofData);
console.timeEnd('Proof time');
const args = [
toHex(input.root),
toHex(input.nullifierHash),
toHex(input.recipient, 20),
toHex(input.relayer, 20),
toHex(input.fee),
toHex(input.refund)
];
return { proof, args };
}
/**
* Do an ETH withdrawal
* @param noteString Note to withdraw
* @param recipient Recipient address
*/
async function withdraw({ deposit, currency, amount, recipient, relayerURL, refund = '0' }) {
let options = {};
if (currency === netSymbol.toLowerCase() && refund !== '0') {
throw new Error('The ETH purchase is supposted to be 0 for ETH withdrawals');
}
refund = toWei(refund);
if (relayerURL) {
if (relayerURL.endsWith('.eth')) {
throw new Error('ENS name resolving is not supported. Please provide DNS name of the relayer. See instuctions in README.md');
}
if (torPort) {
options = { httpsAgent: new SocksProxyAgent('socks5h://127.0.0.1:' + torPort), headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0' } }
}
const relayerStatus = await axios.get(relayerURL + '/status', options);
const { rewardAccount, netId, ethPrices, tornadoServiceFee } = relayerStatus.data
assert(netId === (await web3.eth.net.getId()) || netId === '*', 'This relay is for different network');
console.log('Relay address:', rewardAccount);
const gasPrice = await fetchGasPrice();
const decimals = isTestRPC ? 18 : config.deployments[`netId${netId}`][currency].decimals
const fee = calculateFee({
currency,
gasPrice,
amount,
refund,
ethPrices,
relayerServiceFee: tornadoServiceFee,
decimals
});
if (fee.gt(fromDecimals({ amount, decimals }))) {
throw new Error('Too high refund');
};
const { proof, args } = await generateProof({ deposit, currency, amount, recipient, relayerAddress: rewardAccount, fee, refund });
console.log('Sending withdraw transaction through relay');
try {
const response = await axios.post(relayerURL + '/v1/tornadoWithdraw', {
contract: tornadoInstance,
proof,
args
}, options)
const { id } = response.data;
const result = await getStatus(id, relayerURL, options);
console.log('STATUS', result);
} catch (e) {
if (e.response) {
console.error(e.response.data.error);
} else {
console.error(e.message);
}
}
} else {
// using private key
// check if the address of recepient matches with the account of provided private key from environment to prevent accidental use of deposit address for withdrawal transaction.
assert(recipient.toLowerCase() == senderAccount.toLowerCase(), 'Withdrawal recepient mismatches with the account of provided private key from environment file');
const checkBalance = await web3.eth.getBalance(senderAccount);
assert(checkBalance !== 0, 'You have 0 balance, make sure to fund account by withdrawing from tornado using relayer first');
const { proof, args } = await generateProof({ deposit, currency, amount, recipient, refund });
console.log('Submitting withdraw transaction');
await generateTransaction(contractAddress, tornado.methods.withdraw(tornadoInstance, proof, ...args).encodeABI());
}
if (currency === netSymbol.toLowerCase()) {
await printETHBalance({ address: recipient, name: 'Recipient' });
} else {
await printERC20Balance({ address: recipient, name: 'Recipient' });
}
console.log('Done withdrawal from Tornado Cash');
}
/**
* Do an ETH / ERC20 send
* @param address Recepient address
* @param amount Amount to send
* @param tokenAddress ERC20 token address
*/
async function send({ address, amount, tokenAddress }) {
// using private key
assert(senderAccount != null, 'Error! PRIVATE_KEY not found. Please provide PRIVATE_KEY in .env file if you send');
if (tokenAddress) {
const erc20ContractJson = require('./build/contracts/ERC20Mock.json');
erc20 = new web3.eth.Contract(erc20ContractJson.abi, tokenAddress);
let tokenBalance, tokenDecimals, tokenSymbol;
if (!isTestRPC && !multiCall) {
const callToken = await useMultiCall([[tokenAddress, erc20.methods.balanceOf(senderAccount).encodeABI()], [tokenAddress, erc20.methods.decimals().encodeABI()], [tokenAddress, erc20.methods.symbol().encodeABI()]]);
tokenBalance = new BigNumber(callToken[0]);
tokenDecimals = parseInt(callToken[1]);
tokenSymbol = web3.eth.abi.decodeParameter('string', callToken[2]);
} else {
tokenBalance = new BigNumber(await erc20.methods.balanceOf(senderAccount).call());
tokenDecimals = await erc20.methods.decimals().call();
tokenSymbol = await erc20.methods.symbol().call();
}
const toSend = new BigNumber(amount).times(BigNumber(10).pow(tokenDecimals));
if (tokenBalance.lt(toSend)) {
console.error("You have", rmDecimalBN(tokenBalance.div(BigNumber(10).pow(tokenDecimals))), tokenSymbol, ", you can't send more than you have");
process.exit(1);
}
const encodeTransfer = erc20.methods.transfer(address, toSend).encodeABI();
await generateTransaction(tokenAddress, encodeTransfer);
console.log('Sent', amount, tokenSymbol, 'to', address);
} else {
const balance = new BigNumber(await web3.eth.getBalance(senderAccount));
assert(balance.toNumber() !== 0, "You have 0 balance, can't send transaction");
if (amount) {
toSend = new BigNumber(amount).times(BigNumber(10).pow(18));
if (balance.lt(toSend)) {
console.error("You have", rmDecimalBN(balance.div(BigNumber(10).pow(18))), netSymbol + ", you can't send more than you have.");
process.exit(1);
}
} else {
console.log('Amount not defined, sending all available amounts');
const gasPrice = new BigNumber(await fetchGasPrice());
const gasLimit = new BigNumber(21000);
if (netId == 1) {
const priorityFee = new BigNumber(await gasPrices(3));
toSend = balance.minus(gasLimit.times(gasPrice.plus(priorityFee)));
} else {
toSend = balance.minus(gasLimit.times(gasPrice));
}
}
await generateTransaction(address, null, toSend);
console.log('Sent', rmDecimalBN(toSend.div(BigNumber(10).pow(18))), netSymbol, 'to', address);
}
}
function getStatus(id, relayerURL, options) {
return new Promise((resolve) => {
async function getRelayerStatus() {
const responseStatus = await axios.get(relayerURL + '/v1/jobs/' + id, options);
if (responseStatus.status === 200) {
const { txHash, status, confirmations, failedReason } = responseStatus.data
console.log(`Current job status ${status}, confirmations: ${confirmations}`);
if (status === 'FAILED') {
throw new Error(status + ' failed reason:' + failedReason);
}
if (status === 'CONFIRMED') {
const receipt = await waitForTxReceipt({ txHash });
console.log(
`Transaction submitted through the relay. View transaction on block explorer https://${getExplorerLink()}/tx/${txHash}`
);
console.log('Transaction mined in block', receipt.blockNumber);
resolve(status);
}
}
setTimeout(() => {
getRelayerStatus(id, relayerURL);
}, 3000)
}
getRelayerStatus();
})
}
function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
function fromDecimals({ amount, decimals }) {
amount = amount.toString();
let ether = amount.toString();
const base = new BN('10').pow(new BN(decimals));
const baseLength = base.toString(10).length - 1 || 1;
const negative = ether.substring(0, 1) === '-';
if (negative) {
ether = ether.substring(1);
}
if (ether === '.') {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, invalid value');
}
// Split it into a whole and fractional part
const comps = ether.split('.');
if (comps.length > 2) {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, too many decimal points');
}
let whole = comps[0];
let fraction = comps[1];
if (!whole) {
whole = '0';
}
if (!fraction) {
fraction = '0';
}
if (fraction.length > baseLength) {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, too many decimal places');
}
while (fraction.length < baseLength) {
fraction += '0';
}
whole = new BN(whole);
fraction = new BN(fraction);
let wei = whole.mul(base).add(fraction);
if (negative) {
wei = wei.mul(negative);
}
return new BN(wei.toString(10), 10);
}
function toDecimals(value, decimals, fixed) {
const zero = new BN(0);
const negative1 = new BN(-1);
decimals = decimals || 18;
fixed = fixed || 7;
value = new BN(value);
const negative = value.lt(zero);
const base = new BN('10').pow(new BN(decimals));
const baseLength = base.toString(10).length - 1 || 1;
if (negative) {
value = value.mul(negative1);
}
let fraction = value.mod(base).toString(10);
while (fraction.length < baseLength) {
fraction = `0${fraction}`;
}
fraction = fraction.match(/^([0-9]*[1-9]|0)(0*)/)[1];
const whole = value.div(base).toString(10);
value = `${whole}${fraction === '0' ? '' : `.${fraction}`}`;
if (negative) {
value = `-${value}`;
}
if (fixed) {
value = value.slice(0, fixed);
}
return value;
}
// List fetched from https://github.com/ethereum-lists/chains/blob/master/_data/chains
function getExplorerLink() {
switch (netId) {
case 56:
return 'bscscan.com';
case 100:
return 'blockscout.com/poa/xdai';
case 137:
return 'polygonscan.com';
case 42161:
return 'arbiscan.io';
case 43114:
return 'snowtrace.io';
case 5:
return 'goerli.etherscan.io';
case 42:
return 'kovan.etherscan.io';
case 10:
return 'optimistic.etherscan.io';
default:
return 'etherscan.io';
}
}
// List fetched from https://github.com/trustwallet/assets/tree/master/blockchains
function getCurrentNetworkName() {
switch (netId) {
case 1:
return 'Ethereum';
case 56:
return 'BinanceSmartChain';
case 100:
return 'GnosisChain';
case 137:
return 'Polygon';
case 42161:
return 'Arbitrum';
case 43114:
return 'Avalanche';
case 5:
return 'Goerli';
case 42:
return 'Kovan';
case 10:
return 'Optimism';
default:
return 'testRPC';
}
}
function getCurrentNetworkSymbol() {
switch (netId) {
case 56:
return 'BNB';
case 100:
return 'xDAI';
case 137:
return 'MATIC';
case 43114:
return 'AVAX';
default:
return 'ETH';
}
}
function gasPricesETH(value = 80) {
const tenPercent = (Number(value) * 5) / 100;
const max = Math.max(tenPercent, 3);
const bumped = Math.floor(Number(value) + max);
return toHex(toWei(bumped.toString(), 'gwei'));
}
function gasPrices(value = 5) {
return toHex(toWei(value.toString(), 'gwei'));
}
async function fetchGasPrice() {
try {
const options = {
chainId: netId
}
// Bump fees for Ethereum network
if (netId == 1) {
const oracle = new GasPriceOracle(options);
const gas = await oracle.gasPrices();
return gasPricesETH(gas.instant);
} else if (netId == 5 || isTestRPC) {
const web3GasPrice = await web3.eth.getGasPrice();
return web3GasPrice;
} else {
const oracle = new GasPriceOracle(options);
const gas = await oracle.gasPrices();
return gasPrices(gas.instant);
}
} catch (err) {
throw new Error(`Method fetchGasPrice has error ${err.message}`);
}
}
function calculateFee({ currency, gasPrice, amount, refund, ethPrices, relayerServiceFee, decimals }) {
const decimalsPoint =
Math.floor(relayerServiceFee) === Number(relayerServiceFee) ? 0 : relayerServiceFee.toString().split('.')[1].length;
const roundDecimal = 10 ** decimalsPoint;
const total = toBN(fromDecimals({ amount, decimals }));
const feePercent = total.mul(toBN(relayerServiceFee * roundDecimal)).div(toBN(roundDecimal * 100));
const expense = toBN(gasPrice).mul(toBN(5e5));
let desiredFee;
switch (currency) {
case netSymbol.toLowerCase(): {
desiredFee = expense.add(feePercent);
break;
}
default: {
desiredFee = expense
.add(toBN(refund))
.mul(toBN(10 ** decimals))
.div(toBN(ethPrices[currency]));
desiredFee = desiredFee.add(feePercent);
break;
}
}
return desiredFee;
}
/**
* Waits for transaction to be mined
* @param txHash Hash of transaction
* @param attempts
* @param delay
*/
function waitForTxReceipt({ txHash, attempts = 60, delay = 1000 }) {
return new Promise((resolve, reject) => {
const checkForTx = async (txHash, retryAttempt = 0) => {
const result = await web3.eth.getTransactionReceipt(txHash);
if (!result || !result.blockNumber) {
if (retryAttempt <= attempts) {
setTimeout(() => checkForTx(txHash, retryAttempt + 1), delay);
} else {
reject(new Error('tx was not mined'));
}
} else {
resolve(result);
}
}
checkForTx(txHash);
})
}
function initJson(file) {
return new Promise((resolve, reject) => {
fs.readFile(file, 'utf8', (error, data) => {
if (error) {
resolve([]);
}
try {
resolve(JSON.parse(data));
} catch (error) {
resolve([]);
}
});
});
};
function loadCachedEvents({ type, currency, amount }) {
try {
const module = require(`./cache/${netName.toLowerCase()}/${type}s_${currency}_${amount}.json`);
if (module) {
const events = module;
return {
events,
lastBlock: events[events.length - 1].blockNumber
}
}
} catch (err) {
console.log("Error fetching cached files, syncing from block", deployedBlockNumber);
return {
events: [],
lastBlock: deployedBlockNumber,
}
}
}
async function fetchEvents({ type, currency, amount }) {
if (type === "withdraw") {
type = "withdrawal";
}
const cachedEvents = loadCachedEvents({ type, currency, amount });
const startBlock = cachedEvents.lastBlock + 1;
console.log("Loaded cached",amount,currency.toUpperCase(),type,"events for",startBlock,"block");
console.log("Fetching",amount,currency.toUpperCase(),type,"events for",netName,"network");
async function syncEvents() {
try {
let targetBlock = await web3.eth.getBlockNumber();
let chunks = 1000;
console.log("Querying latest events from RPC");
for (let i = startBlock; i < targetBlock; i += chunks) {
let fetchedEvents = [];
function mapDepositEvents() {
fetchedEvents = fetchedEvents.map(({ blockNumber, transactionHash, returnValues }) => {
const { commitment, leafIndex, timestamp } = returnValues;
return {
blockNumber,
transactionHash,
commitment,
leafIndex: Number(leafIndex),
timestamp
}
});
}
function mapWithdrawEvents() {
fetchedEvents = fetchedEvents.map(({ blockNumber, transactionHash, returnValues }) => {
const { nullifierHash, to, fee } = returnValues;
return {
blockNumber,
transactionHash,
nullifierHash,
to,
fee
}
});
}
function mapLatestEvents() {
if (type === "deposit"){
mapDepositEvents();
} else {
mapWithdrawEvents();
}
}
async function fetchWeb3Events(i) {
let j;
if (i + chunks - 1 > targetBlock) {
j = targetBlock;
} else {
j = i + chunks - 1;
}
await tornadoContract.getPastEvents(capitalizeFirstLetter(type), {
fromBlock: i,
toBlock: j,
}).then(r => { fetchedEvents = fetchedEvents.concat(r); console.log("Fetched", amount, currency.toUpperCase(), type, "events to block:", j) }, err => { console.error(i + " failed fetching", type, "events from node", err); process.exit(1); }).catch(console.log);
if (type === "deposit"){
mapDepositEvents();
} else {
mapWithdrawEvents();
}
}
async function updateCache() {
try {
const fileName = `./cache/${netName.toLowerCase()}/${type}s_${currency}_${amount}.json`;
const localEvents = await initJson(fileName);
const events = localEvents.concat(fetchedEvents);
await fs.writeFileSync(fileName, JSON.stringify(events, null, 2), 'utf8');
} catch (error) {
throw new Error('Writing cache file failed:',error);
}
}
await fetchWeb3Events(i);
await updateCache();
}
} catch (error) {
throw new Error("Error while updating cache");
process.exit(1);
}
}
async function syncGraphEvents() {
let options = {};
if (torPort) {
options = { httpsAgent: new SocksProxyAgent('socks5h://127.0.0.1:' + torPort), headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0' } };
}
async function queryLatestTimestamp() {
try {
const variables = {
currency: currency.toString(),
amount: amount.toString()
}
if (type === "deposit") {
const query = {
query: `
query($currency: String, $amount: String){
deposits(first: 1, orderBy: timestamp, orderDirection: desc, where: {currency: $currency, amount: $amount}) {
timestamp
}
}
`,
variables
}
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.deposits;
const result = queryResult[0].timestamp;
return Number(result);
} else {
const query = {
query: `
query($currency: String, $amount: String){
withdrawals(first: 1, orderBy: timestamp, orderDirection: desc, where: {currency: $currency, amount: $amount}) {
timestamp
}
}
`,
variables
}
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.withdrawals;
const result = queryResult[0].timestamp;
return Number(result);
}
} catch (error) {
console.error("Failed to fetch latest event from thegraph");
}
}
async function queryFromGraph(timestamp) {
try {
const variables = {
currency: currency.toString(),
amount: amount.toString(),
timestamp: timestamp
}
if (type === "deposit") {
const query = {
query: `
query($currency: String, $amount: String, $timestamp: Int){
deposits(orderBy: timestamp, first: 1000, where: {currency: $currency, amount: $amount, timestamp_gt: $timestamp}) {
blockNumber
transactionHash
commitment
index
timestamp
}
}
`,
variables
}
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.deposits;
const mapResult = queryResult.map(({ blockNumber, transactionHash, commitment, index, timestamp }) => {
return {
blockNumber: Number(blockNumber),
transactionHash,
commitment,
leafIndex: Number(index),
timestamp
}
});
return mapResult;
} else {
const query = {
query: `
query($currency: String, $amount: String, $timestamp: Int){
withdrawals(orderBy: timestamp, first: 1000, where: {currency: $currency, amount: $amount, timestamp_gt: $timestamp}) {
blockNumber
transactionHash
nullifier
to
fee
}
}
`,
variables
}
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.withdrawals;