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inverted flags to reduce deploy cost, explicitly set state in toggleDeposits

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poma 2019-11-01 04:11:08 +03:00
parent 54e2c5f890
commit d019e48da3
2 changed files with 23 additions and 19 deletions
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14
contracts/Mixer.sol
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@ -29,8 +29,8 @@ contract Mixer is MerkleTreeWithHistory {
// - disable new deposits in case of emergency
// - update snark verification key until this ability is permanently disabled
address public operator;
bool public isDepositsEnabled = true;
bool public isVerifierUpdateAllowed = true;
bool public isDepositsDisabled;
bool public isVerifierUpdateDisabled;
modifier onlyOperator {
require(msg.sender == operator, "Only operator can call this function.");
_;
@ -63,7 +63,7 @@ contract Mixer is MerkleTreeWithHistory {
@param commitment the note commitment, which is PedersenHash(nullifier + secret)
*/
function deposit(uint256 commitment) public payable {
require(isDepositsEnabled, "deposits are disabled");
require(!isDepositsDisabled, "deposits are disabled");
require(!commitments[commitment], "The commitment has been submitted");
uint256 insertedIndex = _insert(commitment);
commitments[commitment] = true;
@ -112,8 +112,8 @@ contract Mixer is MerkleTreeWithHistory {
@dev Allow operator to temporarily disable new deposits. This is needed to protect users funds in case a vulnerability is discovered.
It does not affect existing deposits.
*/
function toggleDeposits() external onlyOperator {
isDepositsEnabled = !isDepositsEnabled;
function toggleDeposits(bool _state) external onlyOperator {
isDepositsDisabled = _state;
}
/**
@ -121,7 +121,7 @@ contract Mixer is MerkleTreeWithHistory {
After that operator is supposed to permanently disable this ability.
*/
function updateVerifier(address newVerifier) external onlyOperator {
require(isVerifierUpdateAllowed, "Verifier updates have been disabled.");
require(!isVerifierUpdateDisabled, "Verifier updates have been disabled.");
verifier = IVerifier(newVerifier);
}
@ -130,7 +130,7 @@ contract Mixer is MerkleTreeWithHistory {
This is supposed to be called after the final trusted setup ceremony is held.
*/
function disableVerifierUpdate() external onlyOperator {
isVerifierUpdateAllowed = false;
isVerifierUpdateDisabled = true;
}
/** @dev operator can change his address */