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add pauseDeposits

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This commit is contained in:
Roman Storm 2019-08-01 01:41:22 -07:00
parent 9b14a22b0d
commit d91435dd00
9 changed files with 1642 additions and 5 deletions
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12
contracts/Mixer.sol
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@ -8,6 +8,8 @@ contract IVerifier {
contract Mixer is MerkleTreeWithHistory {
uint256 public transferValue;
bool public isDepositsEnabled = true;
address public pauseAccount;
mapping(uint256 => bool) public nullifierHashes;
// we store all commitments just to prevent accidental deposits with the same commitment
mapping(uint256 => bool) public commitments;
@ -25,10 +27,12 @@ contract Mixer is MerkleTreeWithHistory {
address _verifier,
uint256 _transferValue,
uint8 _merkleTreeHeight,
uint256 _emptyElement
uint256 _emptyElement,
address _pauseAccount
) MerkleTreeWithHistory(_merkleTreeHeight, _emptyElement) public {
verifier = IVerifier(_verifier);
transferValue = _transferValue;
pauseAccount = _pauseAccount;
}
/**
@ -36,6 +40,7 @@ contract Mixer is MerkleTreeWithHistory {
@param commitment the note commitment, which is PedersenHash(nullifier + secret)
*/
function deposit(uint256 commitment) public payable {
require(isDepositsEnabled, "deposits disabled");
require(msg.value == transferValue, "Please send `transferValue` ETH along with transaction");
require(!commitments[commitment], "The commitment has been submitted");
_insert(commitment);
@ -70,6 +75,11 @@ contract Mixer is MerkleTreeWithHistory {
emit Withdraw(receiver, nullifierHash, fee);
}
function toggleDeposits() external {
require(msg.sender == pauseAccount, "unauthorized");
isDepositsEnabled = !isDepositsEnabled;
}
function isSpent(uint256 nullifier) public view returns(bool) {
return nullifierHashes[nullifier];
}