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operator role

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This commit is contained in:
Alexey 2019-08-02 20:12:30 +03:00
parent aa88f1c04e
commit 9b4d3bc34e
4 changed files with 62 additions and 11 deletions
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11
contracts/MerkleTreeWithHistory.sol
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@ -1,3 +1,14 @@
// https://tornado.cash
/*
* d888888P dP a88888b. dP
* 88 88 d8' `88 88
* 88 .d8888b. 88d888b. 88d888b. .d8888b. .d888b88 .d8888b. 88 .d8888b. .d8888b. 88d888b.
* 88 88' `88 88' `88 88' `88 88' `88 88' `88 88' `88 88 88' `88 Y8ooooo. 88' `88
* 88 88. .88 88 88 88 88. .88 88. .88 88. .88 dP Y8. .88 88. .88 88 88 88
* dP `88888P' dP dP dP `88888P8 `88888P8 `88888P' 88 Y88888P' `88888P8 `88888P' dP dP
* ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
*/
pragma solidity ^0.5.8;
library MiMC {

31
contracts/Mixer.sol
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@ -1,3 +1,14 @@
// https://tornado.cash
/*
* d888888P dP a88888b. dP
* 88 88 d8' `88 88
* 88 .d8888b. 88d888b. 88d888b. .d8888b. .d888b88 .d8888b. 88 .d8888b. .d8888b. 88d888b.
* 88 88' `88 88' `88 88' `88 88' `88 88' `88 88' `88 88 88' `88 Y8ooooo. 88' `88
* 88 88. .88 88 88 88 88. .88 88. .88 88. .88 dP Y8. .88 88. .88 88 88 88
* dP `88888P' dP dP dP `88888P8 `88888P8 `88888P' 88 Y88888P' `88888P8 `88888P' dP dP
* ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
*/
pragma solidity ^0.5.8;
import "./MerkleTreeWithHistory.sol";
@ -9,7 +20,9 @@ contract IVerifier {
contract Mixer is MerkleTreeWithHistory {
uint256 public transferValue;
bool public isDepositsEnabled = true;
address public pauseAccount;
// operator can disable new deposits in case of emergency
// it also receives a relayer fee
address payable public operator;
mapping(uint256 => bool) public nullifierHashes;
// we store all commitments just to prevent accidental deposits with the same commitment
mapping(uint256 => bool) public commitments;
@ -28,11 +41,11 @@ contract Mixer is MerkleTreeWithHistory {
uint256 _transferValue,
uint8 _merkleTreeHeight,
uint256 _emptyElement,
address _pauseAccount
address payable _operator
) MerkleTreeWithHistory(_merkleTreeHeight, _emptyElement) public {
verifier = IVerifier(_verifier);
transferValue = _transferValue;
pauseAccount = _pauseAccount;
operator = _operator;
}
/**
@ -62,27 +75,27 @@ contract Mixer is MerkleTreeWithHistory {
address payable receiver = address(input[2]);
uint256 fee = input[3];
require(fee < transferValue, "Fee exceeds transfer value");
require(!nullifierHashes[nullifierHash], "The note has been already spent");
require(fee < transferValue, "Fee exceeds transfer value");
require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
require(verifier.verifyProof(a, b, c, input), "Invalid withdraw proof");
nullifierHashes[nullifierHash] = true;
receiver.transfer(transferValue - fee);
if (fee > 0) {
msg.sender.transfer(fee);
operator.transfer(fee);
}
emit Withdraw(receiver, nullifierHash, fee);
}
function toggleDeposits() external {
require(msg.sender == pauseAccount, "unauthorized");
require(msg.sender == operator, "unauthorized");
isDepositsEnabled = !isDepositsEnabled;
}
function setPauseAccount(address _newAccount) external {
require(msg.sender == pauseAccount, "unauthorized");
pauseAccount = _newAccount;
function changeOperator(address payable _newAccount) external {
require(msg.sender == operator, "unauthorized");
operator = _newAccount;
}
function isSpent(uint256 nullifier) public view returns(bool) {

29
test/Mixer.test.js
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@ -60,6 +60,7 @@ function snarkVerify(proof) {
contract('Mixer', accounts => {
let mixer
const sender = accounts[0]
const operator = accounts[0]
const levels = MERKLE_TREE_HEIGHT || 16
const zeroValue = EMPTY_ELEMENT || 1337
const value = AMOUNT || '1000000000000000000' // 1 ether
@ -211,6 +212,7 @@ contract('Mixer', accounts => {
const balanceMixerBefore = await web3.eth.getBalance(mixer.address)
const balanceRelayerBefore = await web3.eth.getBalance(relayer)
const balanceOperatorBefore = await web3.eth.getBalance(operator)
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)
@ -222,10 +224,12 @@ contract('Mixer', accounts => {
const balanceMixerAfter = await web3.eth.getBalance(mixer.address)
const balanceRelayerAfter = await web3.eth.getBalance(relayer)
const balanceOperatorAfter = await web3.eth.getBalance(operator)
const balanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
const feeBN = toBN(fee.toString())
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(value)))
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore).add(feeBN))
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore))
balanceOperatorAfter.should.be.eq.BN(toBN(balanceOperatorBefore).add(feeBN))
balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(value)).sub(feeBN))
@ -386,6 +390,29 @@ contract('Mixer', accounts => {
})
})
describe('#changeOperator', () => {
it('should work', async () => {
let operator = await mixer.operator()
operator.should.be.equal(sender)
const newOperator = accounts[7]
await mixer.changeOperator(newOperator).should.be.fulfilled
operator = await mixer.operator()
operator.should.be.equal(newOperator)
})
it('cannot change from different address', async () => {
let operator = await mixer.operator()
operator.should.be.equal(sender)
const newOperator = accounts[7]
const error = await mixer.changeOperator(newOperator, { from: accounts[7] }).should.be.rejected
error.reason.should.be.equal('unauthorized')
})
})
afterEach(async () => {
await revertSnapshot(snapshotId.result)
// eslint-disable-next-line require-atomic-updates

2
truffle-config.js
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@ -55,7 +55,7 @@ module.exports = {
provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, 'https://mainnet.infura.io/v3/c7463beadf2144e68646ff049917b716'),
network_id: 1,
gas: 5000000,
gasPrice: utils.toWei('2', 'gwei'),
gasPrice: utils.toWei('3.1', 'gwei'),
// confirmations: 0,
// timeoutBlocks: 200,
skipDryRun: true