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operator role
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Alexey
parent
aa88f1c04e
commit
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@ -1,3 +1,14 @@
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// https://tornado.cash
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/*
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* d888888P dP a88888b. dP
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* 88 88 d8' `88 88
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* 88 .d8888b. 88d888b. 88d888b. .d8888b. .d888b88 .d8888b. 88 .d8888b. .d8888b. 88d888b.
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* 88 88' `88 88' `88 88' `88 88' `88 88' `88 88' `88 88 88' `88 Y8ooooo. 88' `88
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* 88 88. .88 88 88 88 88. .88 88. .88 88. .88 dP Y8. .88 88. .88 88 88 88
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* dP `88888P' dP dP dP `88888P8 `88888P8 `88888P' 88 Y88888P' `88888P8 `88888P' dP dP
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* ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
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*/
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pragma solidity ^0.5.8;
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library MiMC {
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@ -1,3 +1,14 @@
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// https://tornado.cash
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/*
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* d888888P dP a88888b. dP
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* 88 88 d8' `88 88
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* 88 .d8888b. 88d888b. 88d888b. .d8888b. .d888b88 .d8888b. 88 .d8888b. .d8888b. 88d888b.
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* 88 88' `88 88' `88 88' `88 88' `88 88' `88 88' `88 88 88' `88 Y8ooooo. 88' `88
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* 88 88. .88 88 88 88 88. .88 88. .88 88. .88 dP Y8. .88 88. .88 88 88 88
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* dP `88888P' dP dP dP `88888P8 `88888P8 `88888P' 88 Y88888P' `88888P8 `88888P' dP dP
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* ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
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*/
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pragma solidity ^0.5.8;
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import "./MerkleTreeWithHistory.sol";
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@ -9,7 +20,9 @@ contract IVerifier {
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contract Mixer is MerkleTreeWithHistory {
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uint256 public transferValue;
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bool public isDepositsEnabled = true;
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address public pauseAccount;
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// operator can disable new deposits in case of emergency
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// it also receives a relayer fee
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address payable public operator;
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mapping(uint256 => bool) public nullifierHashes;
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// we store all commitments just to prevent accidental deposits with the same commitment
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mapping(uint256 => bool) public commitments;
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@ -28,11 +41,11 @@ contract Mixer is MerkleTreeWithHistory {
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uint256 _transferValue,
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uint8 _merkleTreeHeight,
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uint256 _emptyElement,
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address _pauseAccount
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address payable _operator
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) MerkleTreeWithHistory(_merkleTreeHeight, _emptyElement) public {
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verifier = IVerifier(_verifier);
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transferValue = _transferValue;
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pauseAccount = _pauseAccount;
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operator = _operator;
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}
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/**
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@ -62,27 +75,27 @@ contract Mixer is MerkleTreeWithHistory {
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address payable receiver = address(input[2]);
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uint256 fee = input[3];
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require(fee < transferValue, "Fee exceeds transfer value");
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require(!nullifierHashes[nullifierHash], "The note has been already spent");
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require(fee < transferValue, "Fee exceeds transfer value");
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require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
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require(verifier.verifyProof(a, b, c, input), "Invalid withdraw proof");
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nullifierHashes[nullifierHash] = true;
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receiver.transfer(transferValue - fee);
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if (fee > 0) {
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msg.sender.transfer(fee);
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operator.transfer(fee);
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}
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emit Withdraw(receiver, nullifierHash, fee);
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}
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function toggleDeposits() external {
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require(msg.sender == pauseAccount, "unauthorized");
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require(msg.sender == operator, "unauthorized");
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isDepositsEnabled = !isDepositsEnabled;
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}
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function setPauseAccount(address _newAccount) external {
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require(msg.sender == pauseAccount, "unauthorized");
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pauseAccount = _newAccount;
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function changeOperator(address payable _newAccount) external {
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require(msg.sender == operator, "unauthorized");
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operator = _newAccount;
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}
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function isSpent(uint256 nullifier) public view returns(bool) {
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@ -60,6 +60,7 @@ function snarkVerify(proof) {
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contract('Mixer', accounts => {
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let mixer
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const sender = accounts[0]
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const operator = accounts[0]
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const levels = MERKLE_TREE_HEIGHT || 16
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const zeroValue = EMPTY_ELEMENT || 1337
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const value = AMOUNT || '1000000000000000000' // 1 ether
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@ -211,6 +212,7 @@ contract('Mixer', accounts => {
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const balanceMixerBefore = await web3.eth.getBalance(mixer.address)
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const balanceRelayerBefore = await web3.eth.getBalance(relayer)
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const balanceOperatorBefore = await web3.eth.getBalance(operator)
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const balanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
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let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
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isSpent.should.be.equal(false)
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@ -222,10 +224,12 @@ contract('Mixer', accounts => {
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const balanceMixerAfter = await web3.eth.getBalance(mixer.address)
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const balanceRelayerAfter = await web3.eth.getBalance(relayer)
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const balanceOperatorAfter = await web3.eth.getBalance(operator)
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const balanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
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const feeBN = toBN(fee.toString())
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balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(value)))
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balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore).add(feeBN))
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balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore))
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balanceOperatorAfter.should.be.eq.BN(toBN(balanceOperatorBefore).add(feeBN))
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balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(value)).sub(feeBN))
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@ -386,6 +390,29 @@ contract('Mixer', accounts => {
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})
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})
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describe('#changeOperator', () => {
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it('should work', async () => {
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let operator = await mixer.operator()
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operator.should.be.equal(sender)
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const newOperator = accounts[7]
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await mixer.changeOperator(newOperator).should.be.fulfilled
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operator = await mixer.operator()
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operator.should.be.equal(newOperator)
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})
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it('cannot change from different address', async () => {
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let operator = await mixer.operator()
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operator.should.be.equal(sender)
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const newOperator = accounts[7]
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const error = await mixer.changeOperator(newOperator, { from: accounts[7] }).should.be.rejected
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error.reason.should.be.equal('unauthorized')
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})
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})
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afterEach(async () => {
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await revertSnapshot(snapshotId.result)
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// eslint-disable-next-line require-atomic-updates
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@ -55,7 +55,7 @@ module.exports = {
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provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, 'https://mainnet.infura.io/v3/c7463beadf2144e68646ff049917b716'),
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network_id: 1,
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gas: 5000000,
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gasPrice: utils.toWei('2', 'gwei'),
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gasPrice: utils.toWei('3.1', 'gwei'),
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// confirmations: 0,
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// timeoutBlocks: 200,
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skipDryRun: true
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