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work in progress for gsn
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.gitignore
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.gitignore
vendored
@ -96,3 +96,6 @@ typings/
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ERC20Mixer_flat.sol
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ETHMixer_flat.sol
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.openzeppelin/.session
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.openzeppelin/dev-*.json
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116
cli.js
116
cli.js
@ -11,6 +11,8 @@ const merkleTree = require('./lib/MerkleTree')
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const Web3 = require('web3')
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const buildGroth16 = require('websnark/src/groth16')
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const websnarkUtils = require('websnark/src/utils')
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const { GSNProvider, GSNDevProvider } = require('@openzeppelin/gsn-provider')
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const { ephemeral } = require('@openzeppelin/network')
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let web3, mixer, erc20mixer, circuit, proving_key, groth16, erc20
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let MERKLE_TREE_HEIGHT, ETH_AMOUNT, EMPTY_ELEMENT, ERC20_TOKEN
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@ -29,6 +31,7 @@ function createDeposit(nullifier, secret) {
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let deposit = { nullifier, secret }
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deposit.preimage = Buffer.concat([deposit.nullifier.leInt2Buff(31), deposit.secret.leInt2Buff(31)])
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deposit.commitment = pedersenHash(deposit.preimage)
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deposit.nullifierHash = pedersenHash(nullifier.leInt2Buff(31))
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return deposit
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}
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@ -38,9 +41,10 @@ function createDeposit(nullifier, secret) {
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*/
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async function deposit() {
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const deposit = createDeposit(rbigint(31), rbigint(31))
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const fromAccount = (await web3.eth.getAccounts())[0]
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console.log('Submitting deposit transaction')
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await mixer.methods.deposit('0x' + deposit.commitment.toString(16)).send({ value: ETH_AMOUNT, from: (await web3.eth.getAccounts())[0], gas:1e6 })
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await mixer.methods.deposit('0x' + deposit.commitment.toString(16)).send({ value: ETH_AMOUNT, from: fromAccount, gas:1e6 })
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const note = '0x' + deposit.preimage.toString('hex')
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console.log('Your note:', note)
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@ -48,19 +52,21 @@ async function deposit() {
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}
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async function depositErc20() {
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const account = (await web3.eth.getAccounts())[0]
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const fromAccount = (await web3.eth.getAccounts())[0]
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const tokenAmount = process.env.TOKEN_AMOUNT
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await erc20.methods.mint(account, tokenAmount).send({ from: account, gas:1e6 })
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await erc20.methods.approve(erc20mixer.address, tokenAmount).send({ from: account, gas:1e6 })
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const allowance = await erc20.methods.allowance(account, erc20mixer.address).call()
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await erc20.methods.mint(fromAccount, tokenAmount).send({ from: fromAccount, gas:1e6 })
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await erc20.methods.approve(erc20mixer.address, tokenAmount).send({ from: fromAccount, gas:1e6 })
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const allowance = await erc20.methods.allowance(fromAccount, erc20mixer.address).call()
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console.log('erc20mixer allowance', allowance.toString(10))
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const deposit = createDeposit(rbigint(31), rbigint(31))
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await erc20mixer.methods.deposit('0x' + deposit.commitment.toString(16)).send({ value: ETH_AMOUNT, from: account, gas:1e6 })
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await erc20mixer.methods.deposit('0x' + deposit.commitment.toString(16)).send({ from: fromAccount, gas:1e6 })
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const balance = await erc20.methods.balanceOf(erc20mixer.address).call()
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console.log('erc20mixer balance', balance.toString(10))
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const note = '0x' + deposit.preimage.toString('hex')
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console.log('Your note:', note)
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return note
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@ -196,6 +202,92 @@ async function withdraw(note, receiver) {
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console.log('Done')
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}
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async function buildDepositTree() {
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// Get all deposit events from smart contract and assemble merkle tree from them
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console.log('Getting current state from mixer contract')
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const events = await mixer.getPastEvents('Deposit', { fromBlock: mixer.deployedBlock, toBlock: 'latest' })
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const leaves = events
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.sort((a, b) => a.returnValues.leafIndex.sub(b.returnValues.leafIndex)) // Sort events in chronological order
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.map(e => e.returnValues.commitment)
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const tree = new merkleTree(MERKLE_TREE_HEIGHT, EMPTY_ELEMENT, leaves)
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}
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async function withdrawViaRelayer(note, receiver) {
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// Decode hex string and restore the deposit object
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let buf = Buffer.from(note.slice(2), 'hex')
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let deposit = createDeposit(bigInt.leBuff2int(buf.slice(0, 31)), bigInt.leBuff2int(buf.slice(31, 62)))
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const nullifierHash = pedersenHash(deposit.nullifier.leInt2Buff(31))
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const paddedNullifierHash = nullifierHash.toString(16).padStart('66', '0x000000')
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const paddedCommitment = deposit.commitment.toString(16).padStart('66', '0x000000')
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// Get all deposit events from smart contract and assemble merkle tree from them
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console.log('Getting current state from mixer contract')
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const events = await mixer.getPastEvents('Deposit', { fromBlock: mixer.deployedBlock, toBlock: 'latest' })
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const leaves = events
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.sort((a, b) => a.returnValues.leafIndex.sub(b.returnValues.leafIndex)) // Sort events in chronological order
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.map(e => e.returnValues.commitment)
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const tree = new merkleTree(MERKLE_TREE_HEIGHT, EMPTY_ELEMENT, leaves)
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// Find current commitment in the tree
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let depositEvent = events.find(e => e.returnValues.commitment.eq(paddedCommitment))
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let leafIndex = depositEvent ? depositEvent.returnValues.leafIndex.toNumber() : -1
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// Validate that our data is correct
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const isValidRoot = await mixer.methods.isKnownRoot(await tree.root()).call()
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const isSpent = await mixer.methods.isSpent(paddedNullifierHash).call()
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assert(isValidRoot === true, 'Merkle tree assembled incorrectly') // Merkle tree assembled correctly
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assert(isSpent === false, 'The note is spent') // The note is not spent
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assert(leafIndex >= 0, 'Our deposit is not present in the tree') // Our deposit is present in the tree
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// Compute merkle proof of our commitment
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const { root, path_elements, path_index } = await tree.path(leafIndex)
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// Prepare circuit input
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const input = {
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// Public snark inputs
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root: root,
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nullifierHash,
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receiver: bigInt(receiver),
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relayer: bigInt(0),
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fee: bigInt(web3.utils.toWei('0.01')),
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refund: bigInt(0),
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// Private snark inputs
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nullifier: deposit.nullifier,
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secret: deposit.secret,
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pathElements: path_elements,
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pathIndex: path_index,
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}
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console.log('Generating SNARK proof')
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console.time('Proof time')
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const proofData = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
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const { proof, publicSignals } = websnarkUtils.toSolidityInput(proofData)
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console.timeEnd('Proof time')
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console.log('Submitting withdraw transaction via relayer')
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const account = ephemeral()
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const HARDCODED_RELAYER_OPTS = {
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txFee: 90,
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fixedGasPrice: 22000000001,
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gasPrice: 22000000001,
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fixedGasLimit: 5000000,
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gasLimit: 5000000,
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verbose: true,
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}
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const provider = new GSNProvider('https://rinkeby.infura.io/v3/c7463beadf2144e68646ff049917b716', { signKey: account })
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// const provider = new GSNDevProvider('http://localhost:8545', { signKey: account, HARDCODED_RELAYER_OPTS })
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web3 = new Web3(provider)
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const netId = await web3.eth.net.getId()
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console.log('netId', netId)
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// eslint-disable-next-line require-atomic-updates
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mixer = new web3.eth.Contract(contractJson.abi, contractJson.networks[netId].address)
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console.log('mixer address', contractJson.networks[netId].address)
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const tx = await mixer.methods.withdrawViaRelayer(proof, publicSignals).send({ from: account.address, gas: 2e6 })
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console.log('tx', tx)
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console.log('Done')
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}
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/**
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* Init web3, contracts, and snark
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*/
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@ -275,6 +367,11 @@ if (inBrowser) {
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const receiver = (await web3.eth.getAccounts())[0]
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await withdraw(note, receiver)
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}
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window.withdrawViaRelayer = async () => {
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const note = prompt('Enter the note to withdrawViaRelayer')
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const receiver = (await web3.eth.getAccounts())[0]
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await withdrawViaRelayer(note, receiver)
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}
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init()
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} else {
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const args = process.argv.slice(2)
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@ -322,6 +419,13 @@ if (inBrowser) {
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else
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printHelp(1)
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break
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case 'withdrawViaRelayer':
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if (args.length === 3 && /^0x[0-9a-fA-F]{124}$/.test(args[1]) && /^0x[0-9a-fA-F]{40}$/.test(args[2])) {
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init().then(() => withdrawViaRelayer(args[1], args[2])).then(() => process.exit(0)).catch(err => {console.log(err); process.exit(1)})
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}
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else
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printHelp(1)
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break
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case 'test':
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if (args.length === 1) {
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(async () => {
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157
contracts/GSNProxy.sol
Normal file
157
contracts/GSNProxy.sol
Normal file
@ -0,0 +1,157 @@
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pragma solidity ^0.5.8;
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// contract we {}
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import "./IUniswapExchange.sol";
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import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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import "@openzeppelin/contracts-ethereum-package/contracts/GSN/GSNRecipient.sol";
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import "@openzeppelin/contracts-ethereum-package/contracts/GSN/IRelayHub.sol";
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import "@openzeppelin/contracts-ethereum-package/contracts/ownership/Ownable.sol";
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contract IMixer {
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function withdraw(uint256[8] calldata proof, uint256[6] calldata input) external payable;
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function checkWithdrawalValidity(uint256[8] calldata proof, uint256[6] calldata input) external view;
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function denomination() external view returns(uint256);
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function token() external view returns(address); // only for ERC20 version
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}
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contract GSNProxy is GSNRecipient, Ownable {
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IMixer public mixer;
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IUniswapExchange public uniswap;
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IERC20 public token;
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constructor(address _mixer, address _uniswap) public {
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mixer = IMixer(_mixer);
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if (_uniswap != address(0)) {
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uniswap = IUniswapExchange(_uniswap);
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require(mixer.token() == uniswap.tokenAddress(), "mixer and uniswap have different tokens");
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token = IERC20(uniswap.tokenAddress());
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} else {
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// todo: require that mixer is ETH version?
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}
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}
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// Allow to refill mixer balance
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function () external payable {}
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modifier onlyHub() {
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require(msg.sender == getHubAddr(), "only relay hub");
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_;
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}
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/**
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@dev Checks fee and calls mixer withdraw
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*/
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function withdraw(uint256[8] calldata proof, uint256[6] calldata input) external {
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mixer.withdraw.value(refund)(proof, input);
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// todo: check that we received expected fee?
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}
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// gsn related stuff
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// this func is called by a Relayer via the RelayerHub before sending a tx
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function acceptRelayedCall(
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address /*relay*/,
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address /*from*/,
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bytes memory encodedFunction,
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uint256 /*transactionFee*/,
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uint256 /*gasPrice*/,
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uint256 /*gasLimit*/,
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uint256 /*nonce*/,
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bytes memory /*approvalData*/,
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uint256 maxPossibleCharge
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) public view returns (uint256, bytes memory) {
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// think of a withdraw dry-run
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if (!compareBytesWithSelector(encodedFunction, this.withdraw.selector)) {
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return (1, "Only withdrawViaRelayer can be called");
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}
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bytes memory proof;
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bytes memory root;
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uint256 fee;
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uint256 refund;
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assembly {
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let dataPointer := add(encodedFunction, 32)
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let nullifierPointer := mload(add(dataPointer, 4)) // 4 + (8 * 32) + (32) == selector + proof + root
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let recipientPointer := mload(add(dataPointer, 324)) // 4 + (8 * 32) + (32) + (32) == selector + proof + root + nullifier
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mstore(recipient, 64) // save array length
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mstore(add(recipient, 32), recipientPointer) // save recipient address
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mstore(add(recipient, 64), nullifierPointer) // save nullifier address
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}
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//mixer.checkWithdrawalValidity(proof, inputs)
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// todo: duplicate withdraw checks?
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if (token != IERC20(0)) {
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// todo maybe static exchange rate?
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if (uniswap.getTokenToEthInputPrice(fee) < maxPossibleCharge + refund) {
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return (11, "Fee is too low");
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}
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} else {
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// refund is expected to be 0, checked by mixer contract
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if (fee < maxPossibleCharge + refund) {
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return (11, "Fee is too low");
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}
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}
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if (mixer.checkWithdrawalValidity()) {
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}
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return _approveRelayedCall();
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}
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// this func is called by RelayerHub right before calling a target func
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function preRelayedCall(bytes calldata /*context*/) onlyHub external returns (bytes32) {}
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function postRelayedCall(bytes memory /*context*/, bool /*success*/, uint actualCharge, bytes32 /*preRetVal*/) onlyHub public {
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IRelayHub(getHubAddr()).depositFor.value(actualCharge)(address(this));
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}
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function compareBytesWithSelector(bytes memory data, bytes4 sel) internal pure returns (bool) {
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return data[0] == sel[0]
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&& data[1] == sel[1]
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&& data[2] == sel[2]
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&& data[3] == sel[3];
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}
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// Admin functions
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function withdrawFundsFromHub(uint256 amount, address payable dest) onlyOwner external {
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IRelayHub(getHubAddr()).withdraw(amount, dest);
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}
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function upgradeRelayHub(address newRelayHub) onlyOwner external {
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_upgradeRelayHub(newRelayHub);
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}
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function withdrawEther(uint256 amount) onlyOwner external {
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msg.sender.transfer(amount);
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}
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function withdrawTokens(uint256 amount) onlyOwner external {
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safeErc20Transfer(msg.sender, amount);
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}
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function sellTokens(uint256 amount, uint256 min_eth) onlyOwner external {
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token.approve(address(uniswap), amount);
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uniswap.tokenToEthSwapInput(amount, min_eth, now);
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}
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function safeErc20Transfer(address to, uint256 amount) internal {
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bool success;
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bytes memory data;
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bytes4 transferSelector = 0xa9059cbb;
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(success, data) = address(token).call(
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abi.encodeWithSelector(
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transferSelector,
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to, amount
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)
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);
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require(success, "not enough tokens");
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// if contract returns some data let's make sure that is `true` according to standard
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if (data.length > 0) {
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assembly {
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success := mload(add(data, 0x20))
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}
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require(success, "not enough tokens. Token returns false.");
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}
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}
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}
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70
contracts/IUniswapExchange.sol
Normal file
70
contracts/IUniswapExchange.sol
Normal file
@ -0,0 +1,70 @@
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pragma solidity ^0.5.0;
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contract IUniswapExchange {
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// Address of ERC20 token sold on this exchange
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function tokenAddress() external view returns (address token) {}
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// Address of Uniswap Factory
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function factoryAddress() external view returns (address factory) {}
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// Provide Liquidity
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function addLiquidity(uint256 min_liquidity, uint256 max_tokens, uint256 deadline) external payable returns (uint256) {}
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function removeLiquidity(uint256 amount, uint256 min_eth, uint256 min_tokens, uint256 deadline) external returns (uint256, uint256) {}
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// Get Prices
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function getEthToTokenInputPrice(uint256 eth_sold) external view returns (uint256 tokens_bought) {}
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function getEthToTokenOutputPrice(uint256 tokens_bought) external view returns (uint256 eth_sold) {}
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function getTokenToEthInputPrice(uint256 tokens_sold) external view returns (uint256 eth_bought) {}
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function getTokenToEthOutputPrice(uint256 eth_bought) external view returns (uint256 tokens_sold) {}
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// Trade ETH to ERC20
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function ethToTokenSwapInput(uint256 min_tokens, uint256 deadline) external payable returns (uint256 tokens_bought) {}
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function ethToTokenTransferInput(uint256 min_tokens, uint256 deadline, address recipient) external payable returns (uint256 tokens_bought) {}
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function ethToTokenSwapOutput(uint256 tokens_bought, uint256 deadline) external payable returns (uint256 eth_sold) {}
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function ethToTokenTransferOutput(uint256 tokens_bought, uint256 deadline, address recipient) external payable returns (uint256 eth_sold) {}
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// Trade ERC20 to ETH
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function tokenToEthSwapInput(uint256 tokens_sold, uint256 min_eth, uint256 deadline) external returns (uint256 eth_bought) {}
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function tokenToEthTransferInput(uint256 tokens_sold, uint256 min_eth, uint256 deadline, address recipient) external returns (uint256 eth_bought) {}
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function tokenToEthSwapOutput(uint256 eth_bought, uint256 max_tokens, uint256 deadline) external returns (uint256 tokens_sold) {}
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function tokenToEthTransferOutput(uint256 eth_bought, uint256 max_tokens, uint256 deadline, address recipient) external returns (uint256 tokens_sold) {}
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// Trade ERC20 to ERC20
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function tokenToTokenSwapInput(uint256 tokens_sold, uint256 min_tokens_bought, uint256 min_eth_bought, uint256 deadline, address token_addr) external returns (uint256 tokens_bought) {}
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function tokenToTokenTransferInput(uint256 tokens_sold, uint256 min_tokens_bought, uint256 min_eth_bought, uint256 deadline, address recipient, address token_addr) external returns (uint256 tokens_bought) {}
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function tokenToTokenSwapOutput(uint256 tokens_bought, uint256 max_tokens_sold, uint256 max_eth_sold, uint256 deadline, address token_addr) external returns (uint256 tokens_sold) {}
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function tokenToTokenTransferOutput(uint256 tokens_bought, uint256 max_tokens_sold, uint256 max_eth_sold, uint256 deadline, address recipient, address token_addr) external returns (uint256 tokens_sold) {}
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// Trade ERC20 to Custom Pool
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function tokenToExchangeSwapInput(uint256 tokens_sold, uint256 min_tokens_bought, uint256 min_eth_bought, uint256 deadline, address exchange_addr) external returns (uint256 tokens_bought) {}
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|
||||
function tokenToExchangeTransferInput(uint256 tokens_sold, uint256 min_tokens_bought, uint256 min_eth_bought, uint256 deadline, address recipient, address exchange_addr) external returns (uint256 tokens_bought) {}
|
||||
|
||||
function tokenToExchangeSwapOutput(uint256 tokens_bought, uint256 max_tokens_sold, uint256 max_eth_sold, uint256 deadline, address exchange_addr) external returns (uint256 tokens_sold) {}
|
||||
|
||||
function tokenToExchangeTransferOutput(uint256 tokens_bought, uint256 max_tokens_sold, uint256 max_eth_sold, uint256 deadline, address recipient, address exchange_addr) external returns (uint256 tokens_sold) {}
|
||||
// ERC20 comaptibility for liquidity tokens
|
||||
bytes32 public name;
|
||||
bytes32 public symbol;
|
||||
uint256 public decimals;
|
||||
|
||||
function transfer(address _to, uint256 _value) external returns (bool) {}
|
||||
|
||||
function transferFrom(address _from, address _to, uint256 value) external returns (bool) {}
|
||||
|
||||
function approve(address _spender, uint256 _value) external returns (bool) {}
|
||||
|
||||
function allowance(address _owner, address _spender) external view returns (uint256) {}
|
||||
|
||||
function balanceOf(address _owner) external view returns (uint256) {}
|
||||
|
||||
function totalSupply() external view returns (uint256) {}
|
||||
// Never use
|
||||
function setup(address token_addr) external {}
|
||||
}
|
||||
@ -90,16 +90,34 @@ contract Mixer is MerkleTreeWithHistory {
|
||||
address payable relayer = address(input[3]);
|
||||
uint256 fee = input[4];
|
||||
uint256 refund = input[5];
|
||||
|
||||
require(fee < denomination, "Fee exceeds transfer value");
|
||||
require(!nullifierHashes[nullifierHash], "The note has been already spent");
|
||||
|
||||
require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
|
||||
require(verifier.verifyProof(proof, input), "Invalid withdraw proof");
|
||||
|
||||
nullifierHashes[nullifierHash] = true;
|
||||
_processWithdraw(receiver, relayer, fee, refund);
|
||||
emit Withdraw(receiver, nullifierHash, relayer, fee);
|
||||
}
|
||||
|
||||
// todo: use this function in withdraw?
|
||||
/**
|
||||
@dev same checks as `withdraw` implemented as a view function. Used for relayers.
|
||||
*/
|
||||
function checkWithdrawalValidity(uint256[8] calldata proof, uint256[6] calldata input) external view {
|
||||
uint256 root = input[0];
|
||||
uint256 nullifierHash = input[1];
|
||||
//address payable receiver = address(input[2]);
|
||||
//address payable relayer = address(input[3]);
|
||||
uint256 fee = input[4];
|
||||
uint256 refund = input[5];
|
||||
require(fee < denomination, "Fee exceeds transfer value");
|
||||
require(!nullifierHashes[nullifierHash], "The note has been already spent");
|
||||
require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
|
||||
require(verifier.verifyProof(proof, input), "Invalid withdraw proof");
|
||||
}
|
||||
|
||||
/** @dev this function is defined in a child contract */
|
||||
function _processWithdraw(address payable _receiver, address payable _relayer, uint256 _fee, uint256 _refund) internal {}
|
||||
|
||||
|
||||
67
contracts/Mocks/UniswapMock.sol
Normal file
67
contracts/Mocks/UniswapMock.sol
Normal file
@ -0,0 +1,67 @@
|
||||
pragma solidity ^0.5.0;
|
||||
|
||||
import "./ERC20Mock.sol";
|
||||
import "../IUniswapExchange.sol";
|
||||
|
||||
contract UniswapMock is IUniswapExchange {
|
||||
|
||||
ERC20Mock public tokenAddress;
|
||||
uint256 public price;
|
||||
|
||||
// EthPurchase: event({buyer: indexed(address), tokens_sold: indexed(uint256), eth_bought: indexed(uint256(wei))})
|
||||
event EthPurchase(address buyer, uint256 tokens_sold, uint256 eth_bought);
|
||||
|
||||
constructor(ERC20Mock _token, uint256 _price) public payable {
|
||||
tokenAddress = _token;
|
||||
price = _price; // in wei
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @notice Convert Tokens to ETH.
|
||||
* @dev User specifies maximum input and exact output.
|
||||
* @param eth_bought Amount of ETH purchased.
|
||||
* @param max_tokens Maximum Tokens sold.
|
||||
* @param deadline Time after which this transaction can no longer be executed.
|
||||
* @return Amount of Tokens sold.
|
||||
* @public
|
||||
* def tokenToEthSwapOutput(eth_bought: uint256(wei), max_tokens: uint256, deadline: timestamp) -> uint256:
|
||||
*/
|
||||
function tokenToEthSwapOutput(uint256 eth_bought, uint256 /*max_tokens*/, uint256 /*deadline*/) public returns(uint256 tokens_sold) {
|
||||
tokens_sold = getTokenToEthOutputPrice(eth_bought);
|
||||
tokenAddress.transferFrom(msg.sender, address(this), tokens_sold);
|
||||
msg.sender.transfer(eth_bought);
|
||||
emit EthPurchase(msg.sender, tokens_sold, eth_bought);
|
||||
return eth_bought;
|
||||
}
|
||||
|
||||
function getTokenToEthOutputPrice(uint256 eth_bought) public view returns (uint256) {
|
||||
return eth_bought * price / 10**18;
|
||||
}
|
||||
|
||||
/*
|
||||
* @notice Convert Tokens to ETH.
|
||||
* @dev User specifies exact input and minimum output.
|
||||
* @param tokens_sold Amount of Tokens sold.
|
||||
* @param min_eth Minimum ETH purchased.
|
||||
* @param deadline Time after which this transaction can no longer be executed.
|
||||
* @return Amount of ETH bought.
|
||||
* def tokenToEthSwapInput(tokens_sold: uint256, min_eth: uint256(wei), deadline: timestamp) -> uint256(wei):
|
||||
*/
|
||||
function tokenToEthSwapInput(uint256 tokens_sold, uint256 /* min_eth */, uint256 /* deadline */) public returns(uint256) {
|
||||
tokenAddress.transferFrom(msg.sender, address(this), tokens_sold);
|
||||
uint256 eth_bought = getTokenToEthInputPrice(tokens_sold);
|
||||
msg.sender.transfer(eth_bought);
|
||||
return eth_bought;
|
||||
}
|
||||
|
||||
function getTokenToEthInputPrice(uint256 tokens_sold /* in wei */) public view returns (uint256 eth_bought) {
|
||||
return tokens_sold * price / 10**18;
|
||||
}
|
||||
|
||||
function setPrice(uint256 _price) external {
|
||||
price = _price;
|
||||
}
|
||||
|
||||
function() external payable {}
|
||||
}
|
||||
@ -10,6 +10,7 @@
|
||||
Make sure your Metamask is unlocked and connected to Kovan (or other network you've deployed your contract to)<br>
|
||||
<a href="#" onclick="deposit()">Deposit</a>
|
||||
<a href="#" onclick="withdraw()">Withdraw</a>
|
||||
<a href="#" onclick="withdrawViaRelayer()">withdrawViaRelayer</a>
|
||||
</p>
|
||||
<script src="index.js"></script>
|
||||
</body>
|
||||
|
||||
16
migrations/5_deploy_eth_mixer_proxy.js
Normal file
16
migrations/5_deploy_eth_mixer_proxy.js
Normal file
@ -0,0 +1,16 @@
|
||||
/* global artifacts */
|
||||
require('dotenv').config({ path: '../.env' })
|
||||
const ETHMixer = artifacts.require('ETHMixer')
|
||||
const gsnProxy = artifacts.require('GSNProxy')
|
||||
|
||||
module.exports = function(deployer) {
|
||||
return deployer.then(async () => {
|
||||
let mixer = await ETHMixer.deployed()
|
||||
const proxy = await deployer.deploy(
|
||||
gsnProxy,
|
||||
mixer.address,
|
||||
'0x0000000000000000000000000000000000000000',
|
||||
)
|
||||
console.log('Mixer\'s proxy address ', proxy.address)
|
||||
})
|
||||
}
|
||||
32
migrations/7_deploy_erc20_mixer_proxy.js
Normal file
32
migrations/7_deploy_erc20_mixer_proxy.js
Normal file
@ -0,0 +1,32 @@
|
||||
/* global artifacts */
|
||||
require('dotenv').config({ path: '../.env' })
|
||||
const ERC20Mixer = artifacts.require('ERC20Mixer')
|
||||
const gsnProxy = artifacts.require('GSNProxy')
|
||||
const ERC20Mock = artifacts.require('ERC20Mock')
|
||||
const UniswapMock = artifacts.require('UniswapMock')
|
||||
const { toBN, toWei } = require('web3-utils')
|
||||
const eth2daiPrice = toBN('174552286079977583324') // cause 1 ETH == 174.55 DAI
|
||||
|
||||
|
||||
module.exports = function(deployer, network) {
|
||||
return deployer.then(async () => {
|
||||
const { ERC20_TOKEN } = process.env
|
||||
let token = ERC20_TOKEN
|
||||
let uniswapAddress
|
||||
if (network === 'development') { // means we want to test with mock
|
||||
if (token === '') {
|
||||
const tokenInstance = await ERC20Mock.deployed()
|
||||
token = tokenInstance.address
|
||||
}
|
||||
const uniswap = await deployer.deploy(UniswapMock, token, eth2daiPrice, { value: toWei('0.5') })
|
||||
uniswapAddress = uniswap.address
|
||||
}
|
||||
let mixer = await ERC20Mixer.deployed()
|
||||
const proxy = await deployer.deploy(
|
||||
gsnProxy,
|
||||
mixer.address,
|
||||
uniswapAddress,
|
||||
)
|
||||
console.log('ERC20Mixer\'s proxy address ', proxy.address)
|
||||
})
|
||||
}
|
||||
3773
package-lock.json
generated
3773
package-lock.json
generated
File diff suppressed because it is too large
Load Diff
@ -46,6 +46,11 @@
|
||||
"websnark": "git+https://github.com/peppersec/websnark.git#966eafc47df639195c98374d3c366c32acd6f231"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@openzeppelin/contracts-ethereum-package": "^2.2.3",
|
||||
"@openzeppelin/gsn-helpers": "^0.2.0",
|
||||
"@openzeppelin/gsn-provider": "git+https://github.com/peppersec/openzeppelin-gsn-provider.git#4e1d33d4ee5c2486358e16b7da831295b4478631",
|
||||
"@openzeppelin/network": "^0.2.9",
|
||||
"@openzeppelin/upgrades": "^2.5.3",
|
||||
"truffle-flattener": "^1.4.0"
|
||||
}
|
||||
}
|
||||
|
||||
420
test/GSNSupport.test.js
Normal file
420
test/GSNSupport.test.js
Normal file
@ -0,0 +1,420 @@
|
||||
/* global artifacts, web3, contract */
|
||||
require('chai')
|
||||
.use(require('bn-chai')(web3.utils.BN))
|
||||
.use(require('chai-as-promised'))
|
||||
.should()
|
||||
const fs = require('fs')
|
||||
const Web3 = require('web3')
|
||||
|
||||
const { toBN, toHex, toChecksumAddress, toWei, fromWei } = require('web3-utils')
|
||||
const { takeSnapshot, revertSnapshot } = require('../lib/ganacheHelper')
|
||||
const { deployRelayHub, fundRecipient } = require('@openzeppelin/gsn-helpers')
|
||||
const { GSNDevProvider, GSNProvider, utils } = require('@openzeppelin/gsn-provider')
|
||||
const { ephemeral } = require('@openzeppelin/network')
|
||||
|
||||
const Mixer = artifacts.require('./ETHMixer.sol')
|
||||
const ERC20Mixer = artifacts.require('./ERC20Mixer.sol')
|
||||
const RelayHub = artifacts.require('./IRelayHub.sol')
|
||||
const Token = artifacts.require('./ERC20Mock.sol')
|
||||
const Uniswap = artifacts.require('./UniswapMock.sol')
|
||||
const { ETH_AMOUNT, MERKLE_TREE_HEIGHT, EMPTY_ELEMENT, ERC20_TOKEN, TOKEN_AMOUNT } = process.env
|
||||
|
||||
const websnarkUtils = require('websnark/src/utils')
|
||||
const buildGroth16 = require('websnark/src/groth16')
|
||||
const stringifyBigInts = require('websnark/tools/stringifybigint').stringifyBigInts
|
||||
const snarkjs = require('snarkjs')
|
||||
const bigInt = snarkjs.bigInt
|
||||
const crypto = require('crypto')
|
||||
const circomlib = require('circomlib')
|
||||
const MerkleTree = require('../lib/MerkleTree')
|
||||
|
||||
const rbigint = (nbytes) => snarkjs.bigInt.leBuff2int(crypto.randomBytes(nbytes))
|
||||
const pedersenHash = (data) => circomlib.babyJub.unpackPoint(circomlib.pedersenHash.hash(data))[0]
|
||||
|
||||
function generateDeposit() {
|
||||
let deposit = {
|
||||
secret: rbigint(31),
|
||||
nullifier: rbigint(31),
|
||||
}
|
||||
const preimage = Buffer.concat([deposit.nullifier.leInt2Buff(31), deposit.secret.leInt2Buff(31)])
|
||||
deposit.commitment = pedersenHash(preimage)
|
||||
return deposit
|
||||
}
|
||||
|
||||
function getRandomReceiver() {
|
||||
let receiver = rbigint(20)
|
||||
while (toHex(receiver.toString()).length !== 42) {
|
||||
receiver = rbigint(20)
|
||||
}
|
||||
return receiver
|
||||
}
|
||||
|
||||
contract('GSN support', accounts => {
|
||||
let mixer
|
||||
let ercMixer
|
||||
let gsnMixer
|
||||
let hubInstance
|
||||
let relayHubAddress
|
||||
let token
|
||||
let uniswap
|
||||
const sender = accounts[0]
|
||||
const operator = accounts[0]
|
||||
const user = accounts[3]
|
||||
const relayerOwnerAddress = accounts[8]
|
||||
const relayerAddress = accounts[9]// '0x714992E1acbc7f888Be2A1784F0D23e73f4A1ead'
|
||||
const levels = MERKLE_TREE_HEIGHT || 16
|
||||
const zeroValue = EMPTY_ELEMENT || 1337
|
||||
const value = ETH_AMOUNT || '1000000000000000000' // 1 ether
|
||||
let tokenDenomination = TOKEN_AMOUNT || '1000000000000000000' // 1 ether
|
||||
let snapshotId
|
||||
let prefix = 'test'
|
||||
let tree
|
||||
const receiver = getRandomReceiver()
|
||||
let groth16
|
||||
let circuit
|
||||
let proving_key
|
||||
let unstakeDelay = 604800
|
||||
let relayerTxFee = 20 // %
|
||||
let signKey = ephemeral()
|
||||
let gsnWeb3
|
||||
let gsnProvider
|
||||
const postRelayedCallMaxGas = 100000
|
||||
const recipientCallsAtomicOverhead = 5000
|
||||
let postRelayMaxGas = toBN(postRelayedCallMaxGas + recipientCallsAtomicOverhead)
|
||||
// this price is for tokenToEthSwapInput stategy
|
||||
// const eth2daiPriceInput = toBN(toWei('1')).mul(toBN(10e18)).div(toBN('174552286079977583324')) // cause 1 ETH == 174.55 DAI
|
||||
// this price is for tokenToEthSwapOutput stategy
|
||||
const eth2daiPrice = toBN('174552286079977583324') // cause 1 ETH == 174.55 DAI
|
||||
|
||||
before(async () => {
|
||||
tree = new MerkleTree(
|
||||
levels,
|
||||
zeroValue,
|
||||
null,
|
||||
prefix,
|
||||
)
|
||||
mixer = await Mixer.deployed()
|
||||
ercMixer = await ERC20Mixer.deployed()
|
||||
relayHubAddress = toChecksumAddress(await deployRelayHub(web3, {
|
||||
from: sender
|
||||
}))
|
||||
|
||||
await fundRecipient(web3, { recipient: mixer.address, relayHubAddress })
|
||||
await fundRecipient(web3, { recipient: ercMixer.address, relayHubAddress })
|
||||
const currentHub = await mixer.getHubAddr()
|
||||
await ercMixer.upgradeRelayHub(relayHubAddress)
|
||||
if (relayHubAddress !== currentHub) {
|
||||
await mixer.upgradeRelayHub(relayHubAddress)
|
||||
}
|
||||
hubInstance = await RelayHub.at(relayHubAddress)
|
||||
await hubInstance.stake(relayerAddress, unstakeDelay , { from: relayerOwnerAddress, value: toWei('1') })
|
||||
await hubInstance.registerRelay(relayerTxFee, 'http://gsn-dev-relayer.openzeppelin.com/', { from: relayerAddress })
|
||||
|
||||
if (ERC20_TOKEN) {
|
||||
token = await Token.at(ERC20_TOKEN)
|
||||
// uniswap = await Uniswap.at()
|
||||
} else {
|
||||
token = await Token.deployed()
|
||||
await token.mint(user, tokenDenomination)
|
||||
uniswap = await Uniswap.deployed()
|
||||
}
|
||||
|
||||
snapshotId = await takeSnapshot()
|
||||
groth16 = await buildGroth16()
|
||||
circuit = require('../build/circuits/withdraw.json')
|
||||
proving_key = fs.readFileSync('build/circuits/withdraw_proving_key.bin').buffer
|
||||
gsnProvider = new GSNDevProvider('http://localhost:8545', {
|
||||
signKey,
|
||||
relayerOwner: relayerOwnerAddress,
|
||||
relayerAddress,
|
||||
verbose: true,
|
||||
txFee: relayerTxFee
|
||||
})
|
||||
gsnWeb3 = new Web3(gsnProvider, null, { transactionConfirmationBlocks: 1 })
|
||||
gsnMixer = new gsnWeb3.eth.Contract(mixer.abi, mixer.address)
|
||||
})
|
||||
|
||||
describe('#constructor', () => {
|
||||
it('should initialize', async () => {
|
||||
const hub = await mixer.getHubAddr()
|
||||
hub.should.be.equal(relayHubAddress)
|
||||
})
|
||||
})
|
||||
|
||||
describe('#withdrawViaRelayer', () => {
|
||||
it('should work', async () => {
|
||||
const gasPrice = toBN('20000000000')
|
||||
const deposit = generateDeposit()
|
||||
const user = accounts[4]
|
||||
await tree.insert(deposit.commitment)
|
||||
|
||||
const balanceUserBefore = await web3.eth.getBalance(user)
|
||||
|
||||
// Uncomment to measure gas usage
|
||||
// let gas = await mixer.deposit.estimateGas(toBN(deposit.commitment.toString()), { value, from: user, gasPrice: '0' })
|
||||
// console.log('deposit gas:', gas)
|
||||
const txDeposit = await mixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice })
|
||||
// console.log('txDeposit', txDeposit.receipt)
|
||||
const txFee = toBN(txDeposit.receipt.gasUsed).mul(gasPrice)
|
||||
// console.log('txFee', txFee.toString())
|
||||
const balanceUserAfter = await web3.eth.getBalance(user)
|
||||
balanceUserAfter.should.be.eq.BN(toBN(balanceUserBefore).sub(toBN(value).add(txFee)))
|
||||
|
||||
const { root, path_elements, path_index } = await tree.path(0)
|
||||
|
||||
// Circuit input
|
||||
const input = stringifyBigInts({
|
||||
// public
|
||||
root,
|
||||
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
||||
receiver,
|
||||
relayer: operator, // this value wont be taken into account
|
||||
fee: bigInt(1), // this value wont be taken into account
|
||||
|
||||
// private
|
||||
nullifier: deposit.nullifier,
|
||||
secret: deposit.secret,
|
||||
pathElements: path_elements,
|
||||
pathIndex: path_index,
|
||||
})
|
||||
|
||||
|
||||
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
||||
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
||||
|
||||
const balanceMixerBefore = await web3.eth.getBalance(mixer.address)
|
||||
const balanceHubBefore = await web3.eth.getBalance(relayHubAddress)
|
||||
const balanceRelayerBefore = await web3.eth.getBalance(relayerAddress)
|
||||
const balanceRelayerOwnerBefore = await web3.eth.getBalance(relayerOwnerAddress)
|
||||
const balanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
|
||||
let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
||||
isSpent.should.be.equal(false)
|
||||
|
||||
const tx = await gsnMixer.methods.withdrawViaRelayer(pi_a, pi_b, pi_c, publicSignals).send({
|
||||
from: signKey.address,
|
||||
gas: 3e6,
|
||||
gasPrice,
|
||||
value: 0
|
||||
})
|
||||
const { events, gasUsed } = tx
|
||||
const balanceMixerAfter = await web3.eth.getBalance(mixer.address)
|
||||
const balanceHubAfter = await web3.eth.getBalance(relayHubAddress)
|
||||
const balanceRelayerAfter = await web3.eth.getBalance(relayerAddress)
|
||||
const balanceRelayerOwnerAfter = await web3.eth.getBalance(relayerOwnerAddress)
|
||||
const balanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
|
||||
// console.log('balanceMixerBefore, balanceMixerAfter', balanceMixerBefore.toString(), balanceMixerAfter.toString())
|
||||
// console.log('balanceRecieverBefore, balanceRecieverAfter', balanceRecieverBefore.toString(), balanceRecieverAfter.toString())
|
||||
// console.log('balanceHubBefore, balanceHubAfter', balanceHubBefore.toString(), balanceHubAfter.toString())
|
||||
// console.log('balanceRelayerBefore, balanceRelayerAfter', balanceRelayerBefore.toString(), balanceRelayerAfter.toString(), toBN(balanceRelayerBefore).sub(toBN(balanceRelayerAfter)).toString())
|
||||
// console.log('balanceRelayerOwnerBefore, balanceRelayerOwnerAfter', balanceRelayerOwnerBefore.toString(), balanceRelayerOwnerAfter.toString())
|
||||
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(value)))
|
||||
const networkFee = toBN(gasUsed).mul(gasPrice)
|
||||
const chargedFee = networkFee.add(networkFee.div(toBN(relayerTxFee)))
|
||||
// console.log('networkFee :', networkFee.toString())
|
||||
// console.log('calculated chargedFee :', chargedFee.toString())
|
||||
const actualFee = toBN(value).sub(toBN(balanceRecieverAfter))
|
||||
// console.log('actual fee :', actualFee.toString())
|
||||
// const postRelayMaxCost = postRelayMaxGas.mul(gasPrice)
|
||||
// const actualFeeWithoutPostCall = actualFee.sub(postRelayMaxCost)
|
||||
// console.log('actualFeeWithoutPostCall :', actualFeeWithoutPostCall.toString())
|
||||
networkFee.should.be.lt.BN(chargedFee)
|
||||
chargedFee.should.be.lt.BN(actualFee)
|
||||
|
||||
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore).sub(networkFee))
|
||||
balanceRelayerOwnerAfter.should.be.eq.BN(toBN(balanceRelayerOwnerBefore))
|
||||
balanceRecieverAfter.should.be.gt.BN(toBN(balanceRecieverBefore))
|
||||
balanceRecieverAfter.should.be.lt.BN(toBN(value).sub(chargedFee))
|
||||
balanceHubAfter.should.be.eq.BN(toBN(balanceHubBefore).add(actualFee))
|
||||
|
||||
toBN(events.Withdraw.returnValues.nullifierHash).should.be.eq.BN(toBN(input.nullifierHash.toString()))
|
||||
events.Withdraw.returnValues.relayer.should.be.eq.BN(relayerAddress)
|
||||
events.Withdraw.returnValues.to.should.be.eq.BN(toHex(receiver.toString()))
|
||||
|
||||
isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
||||
isSpent.should.be.equal(true)
|
||||
})
|
||||
|
||||
it.skip('should work with relayer selection', async () => {
|
||||
// you should run a relayer or two manualy for this test
|
||||
// npx oz-gsn run-relayer --port 8888
|
||||
const gasPrice = toBN('20000000000')
|
||||
const deposit = generateDeposit()
|
||||
const user = accounts[4]
|
||||
await tree.insert(deposit.commitment)
|
||||
|
||||
await mixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice })
|
||||
const { root, path_elements, path_index } = await tree.path(0)
|
||||
|
||||
// Circuit input
|
||||
const input = stringifyBigInts({
|
||||
// public
|
||||
root,
|
||||
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
||||
receiver,
|
||||
relayer: operator, // this value wont be taken into account
|
||||
fee: bigInt(1), // this value wont be taken into account
|
||||
|
||||
// private
|
||||
nullifier: deposit.nullifier,
|
||||
secret: deposit.secret,
|
||||
pathElements: path_elements,
|
||||
pathIndex: path_index,
|
||||
})
|
||||
|
||||
|
||||
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
||||
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
||||
|
||||
// create a provider to look up the relayers
|
||||
gsnProvider = new GSNProvider('http://localhost:8545', {
|
||||
signKey,
|
||||
relayerOwner: relayerOwnerAddress,
|
||||
relayerAddress,
|
||||
verbose: true
|
||||
})
|
||||
|
||||
hubInstance = utils.createRelayHub(web3, relayHubAddress)
|
||||
gsnProvider.relayClient.serverHelper.setHub(hubInstance)
|
||||
let relays = await gsnProvider.relayClient.serverHelper.fetchRelaysAdded()
|
||||
console.log('all relays', relays)
|
||||
|
||||
const { relayUrl, transactionFee } = relays[1]
|
||||
console.log('we are picking', relayUrl)
|
||||
let blockFrom = 0
|
||||
let pinger = await gsnProvider.relayClient.serverHelper.newActiveRelayPinger(blockFrom, relays[2].gasPrice)
|
||||
const predefinedRelay = await pinger.getRelayAddressPing(relayUrl, transactionFee, relays[2].gasPrice )
|
||||
console.log('relay status', predefinedRelay)
|
||||
|
||||
// eslint-disable-next-line require-atomic-updates
|
||||
gsnProvider = new GSNProvider('http://localhost:8545', {
|
||||
signKey,
|
||||
relayerOwner: relayerOwnerAddress,
|
||||
relayerAddress,
|
||||
verbose: true,
|
||||
predefinedRelay // select the relay we want to work with
|
||||
})
|
||||
gsnWeb3 = new Web3(gsnProvider, null, { transactionConfirmationBlocks: 1 })
|
||||
gsnMixer = new gsnWeb3.eth.Contract(mixer.abi, mixer.address)
|
||||
|
||||
const tx = await gsnMixer.methods.withdrawViaRelayer(pi_a, pi_b, pi_c, publicSignals).send({
|
||||
from: signKey.address,
|
||||
gas: 3e6,
|
||||
gasPrice,
|
||||
value: 0
|
||||
})
|
||||
console.log('tx succeed', tx.status)
|
||||
})
|
||||
|
||||
it('uniswap mock test', async () => {
|
||||
const valueToBuy = toBN(toWei('0.04'))
|
||||
await token.approve(uniswap.address, tokenDenomination, { from: user, gasPrice: 0 })
|
||||
const tokens = await uniswap.getTokenToEthOutputPrice(valueToBuy)
|
||||
const balanceBefore = await web3.eth.getBalance(user)
|
||||
const tokenBalanceBefore = await token.balanceOf(user)
|
||||
await uniswap.tokenToEthSwapOutput(valueToBuy, 1, 2, { from: user, gasPrice: 0 })
|
||||
const balanceAfter = await web3.eth.getBalance(user)
|
||||
const tokenBalanceAfter = await token.balanceOf(user)
|
||||
balanceBefore.should.be.eq.BN(toBN(balanceAfter).sub(valueToBuy))
|
||||
tokenBalanceBefore.should.be.eq.BN(toBN(tokenBalanceAfter).add(toBN(tokens)))
|
||||
valueToBuy.mul(eth2daiPrice).div(toBN(toWei('1'))).should.be.eq.BN(tokens)
|
||||
})
|
||||
|
||||
it.only('should work for token', async () => {
|
||||
const gasPrice = toBN('1')
|
||||
const deposit = generateDeposit()
|
||||
const user = accounts[4]
|
||||
await tree.insert(deposit.commitment)
|
||||
|
||||
await token.mint(user, tokenDenomination)
|
||||
await token.approve(ercMixer.address, tokenDenomination, { from: user })
|
||||
await ercMixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice })
|
||||
|
||||
const { root, path_elements, path_index } = await tree.path(0)
|
||||
|
||||
// Circuit input
|
||||
const input = stringifyBigInts({
|
||||
// public
|
||||
root,
|
||||
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
||||
receiver,
|
||||
relayer: operator, // this value wont be taken into account
|
||||
fee: bigInt(1), // this value wont be taken into account
|
||||
|
||||
// private
|
||||
nullifier: deposit.nullifier,
|
||||
secret: deposit.secret,
|
||||
pathElements: path_elements,
|
||||
pathIndex: path_index,
|
||||
})
|
||||
|
||||
|
||||
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
||||
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
||||
|
||||
const balanceMixerBefore = await web3.eth.getBalance(ercMixer.address)
|
||||
const balanceHubBefore = await web3.eth.getBalance(relayHubAddress)
|
||||
const balanceRelayerBefore = await web3.eth.getBalance(relayerAddress)
|
||||
const balanceRelayerOwnerBefore = await web3.eth.getBalance(relayerOwnerAddress)
|
||||
const balanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
|
||||
|
||||
gsnProvider = new GSNDevProvider('http://localhost:8545', {
|
||||
signKey,
|
||||
relayerOwner: relayerOwnerAddress,
|
||||
relayerAddress,
|
||||
verbose: true,
|
||||
txFee: relayerTxFee
|
||||
})
|
||||
gsnWeb3 = new Web3(gsnProvider, null, { transactionConfirmationBlocks: 1 })
|
||||
gsnMixer = new gsnWeb3.eth.Contract(ercMixer.abi, ercMixer.address)
|
||||
|
||||
const tx = await gsnMixer.methods.withdrawViaRelayer(pi_a, pi_b, pi_c, publicSignals).send({
|
||||
from: signKey.address,
|
||||
gas: 3e6,
|
||||
gasPrice,
|
||||
value: 0
|
||||
})
|
||||
console.log('tx', tx)
|
||||
const { gasUsed } = tx
|
||||
const balanceMixerAfter = await web3.eth.getBalance(ercMixer.address)
|
||||
const balanceHubAfter = await web3.eth.getBalance(relayHubAddress)
|
||||
const balanceRelayerAfter = await web3.eth.getBalance(relayerAddress)
|
||||
const balanceRelayerOwnerAfter = await web3.eth.getBalance(relayerOwnerAddress)
|
||||
const balanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
|
||||
// console.log('balanceMixerBefore, balanceMixerAfter', balanceMixerBefore.toString(), balanceMixerAfter.toString())
|
||||
// console.log('balanceRecieverBefore, balanceRecieverAfter', balanceRecieverBefore.toString(), balanceRecieverAfter.toString())
|
||||
// console.log('balanceHubBefore, balanceHubAfter', balanceHubBefore.toString(), balanceHubAfter.toString())
|
||||
// console.log('balanceRelayerBefore, balanceRelayerAfter', balanceRelayerBefore.toString(), balanceRelayerAfter.toString(), toBN(balanceRelayerBefore).sub(toBN(balanceRelayerAfter)).toString())
|
||||
// console.log('balanceRelayerOwnerBefore, balanceRelayerOwnerAfter', balanceRelayerOwnerBefore.toString(), balanceRelayerOwnerAfter.toString())
|
||||
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(value)))
|
||||
const networkFee = toBN(gasUsed).mul(gasPrice)
|
||||
const chargedFee = networkFee.add(networkFee.div(toBN(relayerTxFee)))
|
||||
// console.log('networkFee :', networkFee.toString())
|
||||
// console.log('calculated chargedFee :', chargedFee.toString())
|
||||
const actualFee = toBN(value).sub(toBN(balanceRecieverAfter))
|
||||
// console.log('actual fee :', actualFee.toString())
|
||||
// const postRelayMaxCost = postRelayMaxGas.mul(gasPrice)
|
||||
// const actualFeeWithoutPostCall = actualFee.sub(postRelayMaxCost)
|
||||
// console.log('actualFeeWithoutPostCall :', actualFeeWithoutPostCall.toString())
|
||||
networkFee.should.be.lt.BN(chargedFee)
|
||||
chargedFee.should.be.lt.BN(actualFee)
|
||||
|
||||
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore).sub(networkFee))
|
||||
balanceRelayerOwnerAfter.should.be.eq.BN(toBN(balanceRelayerOwnerBefore))
|
||||
balanceRecieverAfter.should.be.gt.BN(toBN(balanceRecieverBefore))
|
||||
balanceRecieverAfter.should.be.lt.BN(toBN(value).sub(chargedFee))
|
||||
balanceHubAfter.should.be.eq.BN(toBN(balanceHubBefore).add(actualFee))
|
||||
})
|
||||
})
|
||||
|
||||
afterEach(async () => {
|
||||
await revertSnapshot(snapshotId.result)
|
||||
// eslint-disable-next-line require-atomic-updates
|
||||
snapshotId = await takeSnapshot()
|
||||
tree = new MerkleTree(
|
||||
levels,
|
||||
zeroValue,
|
||||
null,
|
||||
prefix,
|
||||
)
|
||||
})
|
||||
})
|
||||
Loading…
Reference in New Issue
Block a user