tornado-cli/cli.js

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#!/usr/bin/env node
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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');
const readline = require('readline');
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const prompt = readline.createInterface({ input: process.stdin, output: process.stdout });
const gasSpeedPreferences = ['instant', 'fast', 'standard', 'low'];
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let web3,
torPort,
tornado,
tornadoContract,
tornadoInstance,
circuit,
proving_key,
groth16,
erc20,
senderAccount,
netId,
netName,
netSymbol,
multiCall,
subgraph;
let MERKLE_TREE_HEIGHT, ETH_AMOUNT, TOKEN_AMOUNT, PRIVATE_KEY;
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/** Command state parameters */
let preferenceSpeed = gasSpeedPreferences[0];
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let isTestRPC,
eipGasSupport = false;
let shouldPromptConfirmation = true;
let doNotSubmitTx, privateRpc;
/** ----------------------------------------- **/
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/** Generate random number of specified byte length */
const rbigint = (nbytes) => snarkjs.bigInt.leBuff2int(crypto.randomBytes(nbytes));
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/** Compute pedersen hash */
const pedersenHash = (data) => circomlib.babyJub.unpackPoint(circomlib.pedersenHash.hash(data))[0];
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/** 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) {
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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;
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}
/** Display ETH account balance */
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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}`);
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}
/** 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) {
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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(`${name}`, tokenName, `Balance is`, rmDecimalBN(tokenBalance), tokenSymbol);
}
async function submitTransaction(signedTX) {
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console.log('Submitting transaction to the remote node');
await web3.eth
.sendSignedTransaction(signedTX)
.on('transactionHash', function (txHash) {
console.log(`View transaction on block explorer https://${getExplorerLink()}/tx/${txHash}`);
})
.on('error', function (e) {
console.error('on transactionHash error', e.message);
});
}
async function generateTransaction(to, encodedData, value = 0) {
const nonce = await web3.eth.getTransactionCount(senderAccount);
let gasPrice = await fetchGasPrice();
let gasLimit;
async function estimateGas() {
const fetchedGas = await web3.eth.estimateGas({
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from: senderAccount,
to: to,
value: value,
nonce: nonce,
data: encodedData
});
const bumped = Math.floor(fetchedGas * 1.3);
return web3.utils.toHex(bumped);
}
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if (encodedData) {
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gasLimit = await estimateGas();
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} else {
gasLimit = web3.utils.toHex(23000);
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}
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const isNumRString = typeof value == 'string' || typeof value == 'number';
const valueCost = isNumRString ? toBN(value) : value;
const gasCosts = toBN(gasPrice).mul(toBN(gasLimit));
const totalCosts = valueCost.add(gasCosts);
/** Transaction details */
console.log('Gas price: ', web3.utils.hexToNumber(gasPrice));
console.log('Gas limit: ', web3.utils.hexToNumber(gasLimit));
console.log('Transaction fee: ', rmDecimalBN(fromWei(gasCosts), 12), `${netSymbol}`);
console.log('Transaction cost: ', rmDecimalBN(fromWei(totalCosts), 12), `${netSymbol}`);
/** ----------------------------------------- **/
function txoptions() {
// Generate EIP-1559 transaction
if (netId == 1) {
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return {
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to: to,
value: value,
nonce: nonce,
maxFeePerGas: gasPrice,
maxPriorityFeePerGas: web3.utils.toHex(web3.utils.toWei('3', 'gwei')),
gas: gasLimit,
data: encodedData
};
} else if (netId == 5 || netId == 137 || netId == 43114) {
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return {
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to: to,
value: value,
nonce: nonce,
maxFeePerGas: gasPrice,
maxPriorityFeePerGas: gasPrice,
gas: gasLimit,
data: encodedData
};
} else {
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return {
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to: to,
value: value,
nonce: nonce,
gasPrice: gasPrice,
gas: gasLimit,
data: encodedData
};
}
}
if (shouldPromptConfirmation) {
await promptConfirmation();
}
const tx = txoptions();
const signed = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY);
if (!doNotSubmitTx) {
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await submitTransaction(signed.rawTransaction);
} else {
console.log('\n=============Raw TX=================', '\n');
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console.log(
`Please submit this raw tx to https://${getExplorerLink()}/pushTx, or otherwise broadcast with node cli.js broadcast command.`,
`\n`
);
console.log(signed.rawTransaction, `\n`);
console.log('=====================================', '\n');
}
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}
/**
* 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;
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}
async function backupNote({ currency, amount, netId, note, noteString }) {
try {
await fs.writeFileSync(`./backup-tornado-${currency}-${amount}-${netId}-${note.slice(0, 10)}.txt`, noteString, 'utf8');
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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 {
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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) {
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throw new Error('Writing backup invoice failed:', e);
}
}
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/**
* create a deposit invoice.
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* @param currency Сurrency
* @param amount Deposit amount
*/
async function createInvoice({ currency, amount, chainId }) {
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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: ${invoiceString}`);
await backupNote({ currency, amount, netId: chainId, note, noteString });
await backupInvoice({ currency, amount, netId: chainId, commitmentNote, invoiceString });
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return noteString, invoiceString;
}
/**
* Make a deposit
* @param currency Сurrency
* @param amount Deposit amount
*/
async function deposit({ currency, amount, commitmentNote }) {
assert(senderAccount != null, 'Error! PRIVATE_KEY not found. Please provide PRIVATE_KEY in .env file if you deposit');
let commitment, noteString;
if (!commitmentNote) {
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console.log('Creating new random deposit note');
const deposit = createDeposit({
nullifier: rbigint(31),
secret: rbigint(31)
});
const note = toHex(deposit.preimage, 62);
noteString = `tornado-${currency}-${amount}-${netId}-${note}`;
console.log(`Your note: ${noteString}`);
await backupNote({ currency, amount, netId, note, noteString });
commitment = toHex(deposit.commitment);
} else {
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console.log('Using supplied invoice for deposit');
commitment = toHex(commitmentNote);
}
if (currency === netSymbol.toLowerCase()) {
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
const value = isTestRPC ? ETH_AMOUNT : fromDecimals({ amount, decimals: 18 });
console.log('Submitting deposit transaction');
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, commitment, []).encodeABI(), value);
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
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} else {
// a token
await printERC20Balance({ address: tornadoContract._address, name: 'Tornado contract' });
await printERC20Balance({ address: senderAccount, name: 'Sender account' });
const decimals = isTestRPC ? 18 : config.deployments[`netId${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());
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}
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const allowance = await erc20.methods.allowance(senderAccount, tornado._address).call({ from: senderAccount });
console.log('Current allowance is', fromWei(allowance));
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if (toBN(allowance).lt(toBN(tokenAmount))) {
console.log('Approving tokens for deposit');
await generateTransaction(erc20Address, erc20.methods.approve(tornado._address, tokenAmount).encodeABI());
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}
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' });
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}
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if (!commitmentNote) {
return noteString;
}
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}
/**
* 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;
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// Get all deposit events from smart contract and assemble merkle tree from them
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const cachedEvents = await fetchEvents({ type: 'deposit', currency, amount });
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const leaves = cachedEvents
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.sort((a, b) => a.leafIndex - b.leafIndex) // Sort events in chronological order
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.map((e) => {
const index = toBN(e.leafIndex).toNumber();
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if (toBN(e.commitment).eq(toBN(deposit.commitmentHex))) {
leafIndex = index;
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}
return toBN(e.commitment).toString(10);
});
const tree = new merkleTree(MERKLE_TREE_HEIGHT, leaves);
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// Validate that our data is correct
const root = tree.root();
let isValidRoot, isSpent;
if (!isTestRPC && !multiCall) {
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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');
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// Compute merkle proof of our commitment
const { pathElements, pathIndices } = tree.path(leafIndex);
return { root, pathElements, pathIndices };
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}
/**
* 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 }) {
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// Compute merkle proof of our commitment
const { root, pathElements, pathIndices } = await generateMerkleProof(deposit, currency, amount);
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// 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
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};
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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');
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const args = [
toHex(input.root),
toHex(input.nullifierHash),
toHex(input.recipient, 20),
toHex(input.relayer, 20),
toHex(input.fee),
toHex(input.refund)
];
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return { proof, args };
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}
/**
* 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');
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}
refund = toWei(refund);
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if (relayerURL) {
if (relayerURL.endsWith('.eth')) {
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throw new Error(
'ENS name resolving is not supported. Please provide DNS name of the relayer. See instuctions in README.md'
);
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}
if (torPort) {
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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);
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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);
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const gasPrice = await fetchGasPrice();
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const decimals = isTestRPC ? 18 : config.deployments[`netId${netId}`][currency].decimals;
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const fee = calculateFee({
currency,
gasPrice,
amount,
refund,
ethPrices,
relayerServiceFee: tornadoServiceFee,
decimals
});
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if (fee.gt(fromDecimals({ amount, decimals }))) {
throw new Error('Too high refund');
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}
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const { proof, args } = await generateProof({
deposit,
currency,
amount,
recipient,
relayerAddress: rewardAccount,
fee,
refund
});
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console.log('Sending withdraw transaction through relay');
const gasCosts = toBN(gasPrice).mul(toBN(340000));
const totalCosts = fee.add(gasCosts);
/** Relayer fee details **/
console.log('Transaction fee: ', rmDecimalBN(fromWei(gasCosts), 12), `${netSymbol}`);
console.log('Relayer fee: ', rmDecimalBN(fromWei(fee), 12), `${netSymbol}`);
console.log('Total fees: ', rmDecimalBN(fromWei(totalCosts), 12), `${netSymbol}`);
/** -------------------- **/
if (shouldPromptConfirmation) {
await promptConfirmation();
}
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try {
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const response = await axios.post(
relayerURL + '/v1/tornadoWithdraw',
{
contract: tornadoInstance,
proof,
args
},
options
);
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const { id } = response.data;
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const result = await getStatus(id, relayerURL, options);
console.log('STATUS', result);
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} catch (e) {
if (e.response) {
console.error(e.response.data.error);
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} else {
console.error(e.message);
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}
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}
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} 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.
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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 });
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console.log('Submitting withdraw transaction');
await generateTransaction(contractAddress, tornado.methods.withdraw(tornadoInstance, proof, ...args).encodeABI());
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}
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if (currency === netSymbol.toLowerCase()) {
await printETHBalance({ address: recipient, name: 'Recipient' });
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} else {
await printERC20Balance({ address: recipient, name: 'Recipient' });
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}
console.log('Done withdrawal from Tornado Cash');
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}
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/**
* 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');
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if (tokenAddress) {
const erc20ContractJson = require('./build/contracts/ERC20Mock.json');
erc20 = new web3.eth.Contract(erc20ContractJson.abi, tokenAddress);
let tokenBalance, tokenDecimals, tokenSymbol;
if (!isTestRPC && !multiCall) {
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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)) {
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console.error(
'You have',
rmDecimalBN(tokenBalance.div(BigNumber(10).pow(tokenDecimals))),
tokenSymbol,
", you can't send more than you have"
);
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process.exit(1);
}
const encodeTransfer = erc20.methods.transfer(address, toSend).encodeABI();
await generateTransaction(tokenAddress, encodeTransfer);
console.log('Sent', amount, tokenSymbol, 'to', address);
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} else {
const balance = new BigNumber(await web3.eth.getBalance(senderAccount));
assert(balance.toNumber() !== 0, "You have 0 balance, can't send transaction");
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if (amount) {
toSend = new BigNumber(amount).times(BigNumber(10).pow(18));
if (balance.lt(toSend)) {
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console.error(
'You have',
rmDecimalBN(balance.div(BigNumber(10).pow(18))),
netSymbol + ", you can't send more than you have."
);
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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)));
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} else {
toSend = balance.minus(gasLimit.times(gasPrice));
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}
}
await generateTransaction(address, null, toSend);
console.log('Sent', rmDecimalBN(toSend.div(BigNumber(10).pow(18))), netSymbol, 'to', address);
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}
}
function getStatus(id, relayerURL, options) {
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return new Promise((resolve) => {
async function getRelayerStatus() {
const responseStatus = await axios.get(relayerURL + '/v1/jobs/' + id, options);
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if (responseStatus.status === 200) {
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const { txHash, status, confirmations, failedReason } = responseStatus.data;
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console.log(`Current job status ${status}, confirmations: ${confirmations}`);
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if (status === 'FAILED') {
throw new Error(status + ' failed reason:' + failedReason);
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}
if (status === 'CONFIRMED') {
const receipt = await waitForTxReceipt({ txHash });
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console.log(
`Transaction submitted through the relay. View transaction on block explorer https://${getExplorerLink()}/tx/${txHash}`
);
console.log('Transaction mined in block', receipt.blockNumber);
resolve(status);
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}
}
setTimeout(() => {
getRelayerStatus(id, relayerURL);
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}, 3000);
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}
getRelayerStatus();
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});
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}
function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
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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;
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const negative = ether.substring(0, 1) === '-';
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if (negative) {
ether = ether.substring(1);
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}
if (ether === '.') {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, invalid value');
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}
// Split it into a whole and fractional part
const comps = ether.split('.');
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if (comps.length > 2) {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, too many decimal points');
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}
let whole = comps[0];
let fraction = comps[1];
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if (!whole) {
whole = '0';
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}
if (!fraction) {
fraction = '0';
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}
if (fraction.length > baseLength) {
throw new Error('[ethjs-unit] while converting number ' + amount + ' to wei, too many decimal places');
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}
while (fraction.length < baseLength) {
fraction += '0';
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}
whole = new BN(whole);
fraction = new BN(fraction);
let wei = whole.mul(base).add(fraction);
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if (negative) {
wei = wei.mul(negative);
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}
return new BN(wei.toString(10), 10);
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}
function toDecimals(value, decimals, fixed) {
const zero = new BN(0);
const negative1 = new BN(-1);
decimals = decimals || 18;
fixed = fixed || 7;
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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;
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if (negative) {
value = value.mul(negative1);
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}
let fraction = value.mod(base).toString(10);
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while (fraction.length < baseLength) {
fraction = `0${fraction}`;
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}
fraction = fraction.match(/^([0-9]*[1-9]|0)(0*)/)[1];
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const whole = value.div(base).toString(10);
value = `${whole}${fraction === '0' ? '' : `.${fraction}`}`;
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if (negative) {
value = `-${value}`;
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}
if (fixed) {
value = value.slice(0, fixed);
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}
return value;
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}
// 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
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function getCurrentNetworkName() {
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switch (netId) {
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case 1:
return 'Ethereum';
case 56:
return 'BinanceSmartChain';
case 100:
return 'GnosisChain';
case 137:
return 'Polygon';
case 42161:
return 'Arbitrum';
case 43114:
return 'Avalanche';
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case 5:
return 'Goerli';
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case 42:
return 'Kovan';
case 10:
return 'Optimism';
default:
return 'testRPC';
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}
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}
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'));
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}
function gasPrices(value = 5) {
return toHex(toWei(value.toString(), 'gwei'));
}
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async function fetchGasPrice() {
try {
/** Gas preferences **/
console.log('Gas speed preference: ', preferenceSpeed);
/** ----------------------------------------------- **/
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const options = { chainId: netId };
try {
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const isLegacy = !eipGasSupport;
const oracle = new GasPriceOracle(options);
const gas = await oracle.gasPrices({ isLegacy });
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if (netId === 1) {
return gasPricesETH(gas[preferenceSpeed]);
} else {
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return gasPrices(gas[preferenceSpeed]);
}
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} catch (e) {
const wei = await web3.eth.getGasPrice();
return wei / web3.utils.unitMap.gwei;
}
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} catch (err) {
throw new Error(`Method fetchGasPrice has error ${err.message}`);
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}
}
function calculateFee({ currency, gasPrice, amount, refund, ethPrices, relayerServiceFee, decimals }) {
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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;
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switch (currency) {
case netSymbol.toLowerCase(): {
desiredFee = expense.add(feePercent);
break;
}
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default: {
desiredFee = expense
.add(toBN(refund))
.mul(toBN(10 ** decimals))
.div(toBN(ethPrices[currency]));
desiredFee = desiredFee.add(feePercent);
break;
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}
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}
return desiredFee;
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}
/**
* Waits for transaction to be mined
* @param txHash Hash of transaction
* @param attempts
* @param delay
*/
function waitForTxReceipt({ txHash, attempts = 60, delay = 1000 }) {
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return new Promise((resolve, reject) => {
const checkForTx = async (txHash, retryAttempt = 0) => {
const result = await web3.eth.getTransactionReceipt(txHash);
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if (!result || !result.blockNumber) {
if (retryAttempt <= attempts) {
setTimeout(() => checkForTx(txHash, retryAttempt + 1), delay);
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} else {
reject(new Error('tx was not mined'));
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}
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} else {
resolve(result);
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}
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};
checkForTx(txHash);
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});
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}
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([]);
}
});
});
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}
/**
* Erase all zero events from events tree array
* @param events Events tree array
*/
function filterZeroEvents(events) {
return events.filter((event) => event.transactionHash !== null);
}
function loadCachedEvents({ type, currency, amount }) {
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try {
const module = require(`./cache/${netName.toLowerCase()}/${type}s_${currency}_${amount}.json`);
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if (module) {
const events = module;
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return {
events: filterZeroEvents(events),
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lastBlock: events[events.length - 1].blockNumber
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};
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}
} catch (err) {
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console.log('Error fetching cached files, syncing from block', deployedBlockNumber);
return {
events: [],
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lastBlock: deployedBlockNumber
};
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}
}
async function fetchEvents({ type, currency, amount, filterEvents }) {
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if (type === 'withdraw') {
type = 'withdrawal';
}
if (filterEvents === undefined) filterEvents = true;
const cachedEvents = loadCachedEvents({ type, currency, amount });
const startBlock = cachedEvents.lastBlock + 1;
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console.log('Loaded cached', amount, currency.toUpperCase(), type, 'events for', startBlock, 'block');
console.log('Fetching', amount, currency.toUpperCase(), type, 'events for', netName, 'network');
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async function updateCache(fetchedEvents) {
try {
const fileName = `./cache/${netName.toLowerCase()}/${type}s_${currency}_${amount}.json`;
const localEvents = await initJson(fileName);
const events = filterZeroEvents(localEvents).concat(fetchedEvents);
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await fs.writeFileSync(fileName, JSON.stringify(events, null, 2), 'utf8');
} catch (error) {
throw new Error('Writing cache file failed:', error);
}
}
/**
* Adds an zero (empty) event to the end of the events list
* If tornado transactions on the selected currency/amount are rare and the last one was much earlier than the current block,
* it helps to quickly synchronize the events tree
* @param blockNumber Latest block number on selected chain
*/
async function addZeroEvent(blockNumber) {
const zeroEvent = { blockNumber, transactionHash: null };
await updateCache([zeroEvent]);
console.log('Added', amount, currency.toUpperCase(), type, 'zero event to block:', blockNumber);
}
async function syncEvents() {
try {
let targetBlock = await web3.eth.getBlockNumber();
let chunks = 1000;
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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
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};
});
}
function mapWithdrawEvents() {
fetchedEvents = fetchedEvents.map(({ blockNumber, transactionHash, returnValues }) => {
const { nullifierHash, to, fee } = returnValues;
return {
blockNumber,
transactionHash,
nullifierHash,
to,
fee
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};
});
}
function mapLatestEvents() {
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if (type === 'deposit') {
mapDepositEvents();
} else {
mapWithdrawEvents();
}
}
async function fetchWeb3Events(i) {
let j;
if (i + chunks - 1 > targetBlock) {
j = targetBlock;
} else {
j = i + chunks - 1;
}
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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);
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mapLatestEvents();
}
await fetchWeb3Events(i);
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await updateCache(fetchedEvents);
}
await addZeroEvent(targetBlock - 1);
} catch (error) {
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console.log(error);
throw new Error('Error while updating cache');
}
}
async function syncGraphEvents() {
let options = {};
if (torPort) {
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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()
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};
if (type === 'deposit') {
const query = {
query: `
query($currency: String, $amount: String){
deposits(first: 1, orderBy: timestamp, orderDirection: desc, where: {currency: $currency, amount: $amount}) {
timestamp
}
}
`,
variables
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};
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.deposits;
const result = queryResult[0].timestamp;
return Number(result);
} else {
const query = {
query: `
query($currency: String, $amount: String){
withdrawals(first: 1, orderBy: timestamp, orderDirection: desc, where: {currency: $currency, amount: $amount}) {
timestamp
}
}
`,
variables
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};
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.withdrawals;
const result = queryResult[0].timestamp;
return Number(result);
}
} catch (error) {
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console.error('Failed to fetch latest event from thegraph');
}
}
async function queryFromGraph(timestamp) {
try {
const variables = {
currency: currency.toString(),
amount: amount.toString(),
timestamp: timestamp
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};
if (type === 'deposit') {
const query = {
query: `
query($currency: String, $amount: String, $timestamp: Int){
deposits(orderBy: timestamp, first: 1000, where: {currency: $currency, amount: $amount, timestamp_gt: $timestamp}) {
blockNumber
transactionHash
commitment
index
timestamp
}
}
`,
variables
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};
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.deposits;
const mapResult = queryResult.map(({ blockNumber, transactionHash, commitment, index, timestamp }) => {
return {
blockNumber: Number(blockNumber),
transactionHash,
commitment,
leafIndex: Number(index),
timestamp
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};
});
return mapResult;
} else {
const query = {
query: `
query($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
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};
const querySubgraph = await axios.post(subgraph, query, options);
const queryResult = querySubgraph.data.data.withdrawals;
const mapResult = queryResult.map(({ blockNumber, transactionHash, nullifier, to, fee }) => {
return {
blockNumber: Number(blockNumber),
transactionHash,
nullifierHash: nullifier,
to,
fee
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};
});
return mapResult;
}
} catch (error) {
console.error(error);
}
}
async function fetchGraphEvents() {
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console.log('Querying latest events from TheGraph');
const latestTimestamp = await queryLatestTimestamp();
if (latestTimestamp) {
const getCachedBlock = await web3.eth.getBlock(startBlock);
const cachedTimestamp = getCachedBlock.timestamp;
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for (let i = cachedTimestamp; i < latestTimestamp; ) {
const result = await queryFromGraph(i);
if (Object.keys(result).length === 0) {
i = latestTimestamp;
} else {
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if (type === 'deposit') {
const resultBlock = result[result.length - 1].blockNumber;
const resultTimestamp = result[result.length - 1].timestamp;
await updateCache(result);
i = resultTimestamp;
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console.log('Fetched', amount, currency.toUpperCase(), type, 'events to block:', Number(resultBlock));
} else {
const resultBlock = result[result.length - 1].blockNumber;
const getResultBlock = await web3.eth.getBlock(resultBlock);
const resultTimestamp = getResultBlock.timestamp;
await updateCache(result);
i = resultTimestamp;
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console.log('Fetched', amount, currency.toUpperCase(), type, 'events to block:', Number(resultBlock));
}
}
}
} else {
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console.log('Fallback to web3 events');
await syncEvents();
}
}
await fetchGraphEvents();
}
if (!privateRpc && !subgraph && !isTestRPC) {
await syncGraphEvents();
} else {
await syncEvents();
}
async function loadUpdatedEvents() {
const fileName = `./cache/${netName.toLowerCase()}/${type}s_${currency}_${amount}.json`;
const updatedEvents = await initJson(fileName);
const updatedBlock = updatedEvents[updatedEvents.length - 1].blockNumber;
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console.log('Cache updated for Tornado', type, amount, currency, 'instance to block', updatedBlock, 'successfully');
console.log(`Total ${type}s:`, updatedEvents.length);
return updatedEvents;
}
const events = await loadUpdatedEvents();
return filterEvents ? filterZeroEvents(events) : events;
}
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/**
* Parses Tornado.cash note
* @param noteString the note
*/
function parseNote(noteString) {
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const noteRegex = /tornado-(?<currency>\w+)-(?<amount>[\d.]+)-(?<netId>\d+)-0x(?<note>[0-9a-fA-F]{124})/g;
const match = noteRegex.exec(noteString);
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if (!match) {
throw new Error('The note has invalid format');
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}
const buf = Buffer.from(match.groups.note, 'hex');
const nullifier = bigInt.leBuff2int(buf.slice(0, 31));
const secret = bigInt.leBuff2int(buf.slice(31, 62));
const deposit = createDeposit({ nullifier, secret });
const netId = Number(match.groups.netId);
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return {
currency: match.groups.currency,
amount: match.groups.amount,
netId,
deposit
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};
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}
/**
* Parses Tornado.cash deposit invoice
* @param invoiceString the note
*/
function parseInvoice(invoiceString) {
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const noteRegex = /tornadoInvoice-(?<currency>\w+)-(?<amount>[\d.]+)-(?<netId>\d+)-0x(?<commitmentNote>[0-9a-fA-F]{64})/g;
const match = noteRegex.exec(invoiceString);
if (!match) {
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throw new Error('The note has invalid format');
}
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const netId = Number(match.groups.netId);
const buf = Buffer.from(match.groups.commitmentNote, 'hex');
const commitmentNote = toHex(buf.slice(0, 32));
return {
currency: match.groups.currency,
amount: match.groups.amount,
netId,
commitmentNote
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};
}
async function loadDepositData({ amount, currency, deposit }) {
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try {
const cachedEvents = await fetchEvents({ type: 'deposit', currency, amount });
const eventWhenHappened = await cachedEvents.filter(function (event) {
return event.commitment === deposit.commitmentHex;
})[0];
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if (eventWhenHappened.length === 0) {
throw new Error('There is no related deposit, the note is invalid');
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}
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const timestamp = eventWhenHappened.timestamp;
const txHash = eventWhenHappened.transactionHash;
const isSpent = await tornadoContract.methods.isSpent(deposit.nullifierHex).call();
const receipt = await web3.eth.getTransactionReceipt(txHash);
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return {
timestamp,
txHash,
isSpent,
from: receipt.from,
commitment: deposit.commitmentHex
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};
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} catch (e) {
console.error('loadDepositData', e);
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}
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return {};
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}
async function loadWithdrawalData({ amount, currency, deposit }) {
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try {
const cachedEvents = await fetchEvents({ type: 'withdrawal', currency, amount });
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const withdrawEvent = cachedEvents.filter((event) => {
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return event.nullifierHash === deposit.nullifierHex;
})[0];
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const fee = withdrawEvent.fee;
const decimals = config.deployments[`netId${netId}`][currency].decimals;
const withdrawalAmount = toBN(fromDecimals({ amount, decimals })).sub(toBN(fee));
const { timestamp } = await web3.eth.getBlock(withdrawEvent.blockNumber);
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return {
amount: toDecimals(withdrawalAmount, decimals, 9),
txHash: withdrawEvent.transactionHash,
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to: withdrawEvent.to,
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timestamp,
nullifier: deposit.nullifierHex,
fee: toDecimals(fee, decimals, 9)
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};
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} catch (e) {
console.error('loadWithdrawalData', e);
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}
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}
function statePreferences(program) {
const isPref = gasSpeedPreferences.includes(program.gas_speed);
if (program.gas_speed && !isPref) {
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throw new Error('Invalid gas speed preference');
} else if (program.gas_speed) {
preferenceSpeed = program.gas_speed;
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}
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if (program.noconfirmation) {
shouldPromptConfirmation = false;
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}
if (program.onlyrpc) {
privateRpc = true;
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}
if (program.tor) {
torPort = program.tor;
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}
}
async function promptConfirmation() {
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const query = 'Confirm the transaction [Y/n] ';
const confirmation = await new Promise((resolve) => prompt.question(query, resolve));
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if (confirmation.toUpperCase() !== 'Y') {
throw new Error('Transaction rejected');
}
}
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/**
* Init web3, contracts, and snark
*/
async function init({ rpc, noteNetId, currency = 'dai', amount = '100', balanceCheck, localMode }) {
let contractJson, instanceJson, erc20ContractJson, erc20tornadoJson, tornadoAddress, tokenAddress;
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let ipOptions = {};
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if (torPort && rpc.includes('https')) {
console.log('Using tor network');
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web3Options = { agent: { https: new SocksProxyAgent('socks5h://127.0.0.1:' + torPort) }, timeout: 60000 };
// Use forked web3-providers-http from local file to modify user-agent header value which improves privacy.
web3 = new Web3(new Web3HttpProvider(rpc, web3Options), null, { transactionConfirmationBlocks: 1 });
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ipOptions = {
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' }
};
} else if (torPort && rpc.includes('http')) {
console.log('Using tor network');
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web3Options = { agent: { http: new SocksProxyAgent('socks5h://127.0.0.1:' + torPort) }, timeout: 60000 };
// Use forked web3-providers-http from local file to modify user-agent header value which improves privacy.
web3 = new Web3(new Web3HttpProvider(rpc, web3Options), null, { transactionConfirmationBlocks: 1 });
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ipOptions = {
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' }
};
} else if (rpc.includes('ipc')) {
console.log('Using ipc connection');
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web3 = new Web3(new Web3.providers.IpcProvider(rpc, net), null, { transactionConfirmationBlocks: 1 });
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} else if (rpc.includes('ws') || rpc.includes('wss')) {
console.log('Using websocket connection (Note: Tor is not supported for Websocket providers)');
web3Options = {
clientConfig: { keepalive: true, keepaliveInterval: -1 },
reconnect: { auto: true, delay: 1000, maxAttempts: 10, onTimeout: false }
};
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web3 = new Web3(new Web3.providers.WebsocketProvider(rpc, web3Options), net, { transactionConfirmationBlocks: 1 });
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} else {
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console.log('Connecting to remote node');
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web3 = new Web3(rpc, null, { transactionConfirmationBlocks: 1 });
}
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const rpcHost = new URL(rpc).hostname;
const isIpPrivate = is_ip_private(rpcHost);
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if (!isIpPrivate && !rpc.includes('localhost') && !privateRpc) {
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try {
const fetchRemoteIP = await axios.get('https://ip.tornado.cash', ipOptions);
const { country, ip } = fetchRemoteIP.data;
console.log('Your remote IP address is', ip, 'from', country + '.');
} catch (error) {
console.error('Could not fetch remote IP from ip.tornado.cash, use VPN if the problem repeats.');
}
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} else if (isIpPrivate || rpc.includes('localhost')) {
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console.log('Local RPC detected');
privateRpc = true;
}
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contractJson = require('./build/contracts/TornadoProxy.abi.json');
instanceJson = require('./build/contracts/Instance.abi.json');
circuit = require('./build/circuits/tornado.json');
proving_key = fs.readFileSync('build/circuits/tornadoProvingKey.bin').buffer;
MERKLE_TREE_HEIGHT = process.env.MERKLE_TREE_HEIGHT || 20;
ETH_AMOUNT = process.env.ETH_AMOUNT;
TOKEN_AMOUNT = process.env.TOKEN_AMOUNT;
const privKey = process.env.PRIVATE_KEY;
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if (privKey) {
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if (privKey.includes('0x')) {
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PRIVATE_KEY = process.env.PRIVATE_KEY.substring(2);
} else {
PRIVATE_KEY = process.env.PRIVATE_KEY;
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}
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}
if (PRIVATE_KEY) {
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const account = web3.eth.accounts.privateKeyToAccount('0x' + PRIVATE_KEY);
web3.eth.accounts.wallet.add('0x' + PRIVATE_KEY);
web3.eth.defaultAccount = account.address;
senderAccount = account.address;
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}
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erc20ContractJson = require('./build/contracts/ERC20Mock.json');
erc20tornadoJson = require('./build/contracts/ERC20Tornado.json');
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// groth16 initialises a lot of Promises that will never be resolved, that's why we need to use process.exit to terminate the CLI
groth16 = await buildGroth16();
netId = await web3.eth.net.getId();
netName = getCurrentNetworkName();
netSymbol = getCurrentNetworkSymbol();
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if (noteNetId && Number(noteNetId) !== netId) {
throw new Error('This note is for a different network. Specify the --rpc option explicitly');
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}
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if (netName === 'testRPC') {
isTestRPC = true;
}
if (localMode) {
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console.log('Local mode detected: will not submit signed TX to remote node');
doNotSubmitTx = true;
}
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if (isTestRPC) {
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tornadoAddress =
currency === netSymbol.toLowerCase() ? contractJson.networks[netId].address : erc20tornadoJson.networks[netId].address;
tokenAddress = currency !== netSymbol.toLowerCase() ? erc20ContractJson.networks[netId].address : null;
deployedBlockNumber = 0;
senderAccount = (await web3.eth.getAccounts())[0];
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} else {
try {
if (balanceCheck) {
currency = netSymbol.toLowerCase();
amount = Object.keys(config.deployments[`netId${netId}`][currency].instanceAddress)[0];
}
tornadoAddress = config.deployments[`netId${netId}`].proxy;
multiCall = config.deployments[`netId${netId}`].multicall;
subgraph = config.deployments[`netId${netId}`].subgraph;
tornadoInstance = config.deployments[`netId${netId}`][currency].instanceAddress[amount];
deployedBlockNumber = config.deployments[`netId${netId}`][currency].deployedBlockNumber[amount];
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if (!tornadoAddress) {
throw new Error();
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}
tokenAddress = currency !== netSymbol.toLowerCase() ? config.deployments[`netId${netId}`][currency].tokenAddress : null;
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} catch (e) {
console.error('There is no such tornado instance, check the currency and amount you provide', e);
process.exit(1);
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}
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}
tornado = new web3.eth.Contract(contractJson, tornadoAddress);
tornadoContract = new web3.eth.Contract(instanceJson, tornadoInstance);
contractAddress = tornadoAddress;
erc20 = currency !== netSymbol.toLowerCase() ? new web3.eth.Contract(erc20ContractJson.abi, tokenAddress) : {};
erc20Address = tokenAddress;
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}
async function main() {
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program
.option('-r, --rpc <URL>', 'The RPC that CLI should interact with', 'http://localhost:8545')
.option('-R, --relayer <URL>', 'Withdraw via relayer')
.option('-T, --tor <PORT>', 'Optional tor port')
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.option('-S --gas_speed <SPEED>', 'Gas speed preference [ instant, fast, standard, low ]')
.option('-N --noconfirmation', 'No confirmation mode - Does not query confirmation ')
.option('-L, --local-rpc', 'Local node mode - Does not submit signed transaction to the node')
.option('-o, --only-rpc', 'Only rpc mode - Does not enable thegraph api nor remote ip detection');
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program
.command('createNote <currency> <amount> <chainId>')
.description(
'Create deposit note and invoice, allows generating private key like deposit notes from secure, offline environment. The currency is one of (ETH|DAI|cDAI|USDC|cUSDC|USDT). The amount depends on currency, see config.js file or visit https://tornado.cash.'
)
.action(async (currency, amount, chainId) => {
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currency = currency.toLowerCase();
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await createInvoice({ currency, amount, chainId });
});
program
.command('depositInvoice <invoice>')
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.description('Submit a deposit of invoice from default eth account and return the resulting note.')
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.action(async (invoice) => {
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statePreferences(program);
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const { currency, amount, netId, commitmentNote } = parseInvoice(invoice);
await init({ rpc: program.rpc, currency, amount, localMode: program.local });
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console.log('Creating', currency.toUpperCase(), amount, 'deposit for', netName, 'Tornado Cash Instance');
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await deposit({ currency, amount, commitmentNote });
});
program
.command('deposit <currency> <amount>')
.description(
'Submit a deposit of specified currency and amount from default eth account and return the resulting note. The currency is one of (ETH|DAI|cDAI|USDC|cUSDC|USDT). The amount depends on currency, see config.js file or visit https://tornado.cash.'
)
.action(async (currency, amount) => {
currency = currency.toLowerCase();
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statePreferences(program);
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await init({ rpc: program.rpc, currency, amount, localMode: program.local });
await deposit({ currency, amount });
});
program
.command('withdraw <note> <recipient> [ETH_purchase]')
.description(
'Withdraw a note to a recipient account using relayer or specified private key. You can exchange some of your deposit`s tokens to ETH during the withdrawal by specifing ETH_purchase (e.g. 0.01) to pay for gas in future transactions. Also see the --relayer option.'
)
.action(async (noteString, recipient, refund) => {
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statePreferences(program);
const { currency, amount, netId, deposit } = parseNote(noteString);
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await init({ rpc: program.rpc, noteNetId: netId, currency, amount, localMode: program.local });
await withdraw({
deposit,
currency,
amount,
recipient,
refund,
relayerURL: program.relayer
});
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});
program
.command('balance [address] [token_address]')
.description('Check ETH and ERC20 balance')
.action(async (address, tokenAddress) => {
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statePreferences(program);
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await init({ rpc: program.rpc, balanceCheck: true });
if (!address && senderAccount) {
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console.log('Using address', senderAccount, 'from private key');
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address = senderAccount;
}
await printETHBalance({ address, name: 'Account' });
if (tokenAddress) {
await printERC20Balance({ address, name: 'Account', tokenAddress });
}
});
program
.command('send <address> [amount] [token_address]')
.description('Send ETH or ERC to address')
.action(async (address, amount, tokenAddress) => {
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statePreferences(program);
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await init({ rpc: program.rpc, balanceCheck: true, localMode: program.local });
await send({ address, amount, tokenAddress });
});
program
.command('broadcast <signedTX>')
.description('Submit signed TX to the remote node')
.action(async (signedTX) => {
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statePreferences(program);
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await init({ rpc: program.rpc, balanceCheck: true });
await submitTransaction(signedTX);
});
program
.command('compliance <note>')
.description(
'Shows the deposit and withdrawal of the provided note. This might be necessary to show the origin of assets held in your withdrawal address.'
)
.action(async (noteString) => {
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statePreferences(program);
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const { currency, amount, netId, deposit } = parseNote(noteString);
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await init({ rpc: program.rpc, noteNetId: netId, currency, amount });
const depositInfo = await loadDepositData({ amount, currency, deposit });
const depositDate = new Date(depositInfo.timestamp * 1000);
console.log('\n=============Deposit=================');
console.log('Deposit :', amount, currency.toUpperCase());
console.log('Date :', depositDate.toLocaleDateString(), depositDate.toLocaleTimeString());
console.log('From :', `https://${getExplorerLink()}/address/${depositInfo.from}`);
console.log('Transaction :', `https://${getExplorerLink()}/tx/${depositInfo.txHash}`);
console.log('Commitment :', depositInfo.commitment);
console.log('Spent :', depositInfo.isSpent);
if (!depositInfo.isSpent) {
console.log('The note was not spent');
return;
}
console.log('=====================================', '\n');
const withdrawInfo = await loadWithdrawalData({ amount, currency, deposit });
const withdrawalDate = new Date(withdrawInfo.timestamp * 1000);
console.log('\n=============Withdrawal==============');
console.log('Withdrawal :', withdrawInfo.amount, currency);
console.log('Relayer Fee :', withdrawInfo.fee, currency);
console.log('Date :', withdrawalDate.toLocaleDateString(), withdrawalDate.toLocaleTimeString());
console.log('To :', `https://${getExplorerLink()}/address/${withdrawInfo.to}`);
console.log('Transaction :', `https://${getExplorerLink()}/tx/${withdrawInfo.txHash}`);
console.log('Nullifier :', withdrawInfo.nullifier);
console.log('=====================================', '\n');
});
program
.command('syncEvents <type> <currency> <amount>')
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.description('Sync the local cache file of deposit / withdrawal events for specific currency.')
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.action(async (type, currency, amount) => {
currency = currency.toLowerCase();
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statePreferences(program);
console.log('Starting event sync command');
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await init({ rpc: program.rpc, type, currency, amount });
const cachedEvents = await fetchEvents({ type, currency, amount, filterEvents: false });
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console.log(
'Synced event for',
type,
amount,
currency.toUpperCase(),
netName,
'Tornado instance to block',
cachedEvents[cachedEvents.length - 1].blockNumber
);
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});
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program.command('parseNote <note>').action(async (noteString) => {
const parse = parseNote(noteString);
netId = parse.netId;
netName = getCurrentNetworkName();
console.log('\n=============Note=================');
console.log('Network:', netName);
console.log('Denomination:', parse.amount, parse.currency.toUpperCase());
console.log('Commitment: ', parse.deposit.commitmentHex);
console.log('Nullifier Hash: ', parse.deposit.nullifierHex);
console.log('=====================================', '\n');
});
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program
.command('test')
.description('Perform an automated test. It deposits and withdraws one ETH and one ERC20 note. Uses ganache.')
.action(async () => {
privateRpc = true;
console.log('Start performing ETH deposit-withdraw test');
let currency = 'eth';
let amount = '0.1';
await init({ rpc: program.rpc, currency, amount });
let noteString = await deposit({ currency, amount });
let parsedNote = parseNote(noteString);
await withdraw({
deposit: parsedNote.deposit,
currency,
amount,
recipient: senderAccount,
relayerURL: program.relayer
});
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console.log('\nStart performing DAI deposit-withdraw test');
currency = 'dai';
amount = '100';
await init({ rpc: program.rpc, currency, amount });
noteString = await deposit({ currency, amount });
parsedNote = parseNote(noteString);
await withdraw({
deposit: parsedNote.deposit,
currency,
amount,
recipient: senderAccount,
refund: '0.02',
relayerURL: program.relayer
});
});
try {
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await program.parseAsync(process.argv);
process.exit(0);
} catch (e) {
console.log('Error:', e);
process.exit(1);
}
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}
main();