37 lines
785 B
Solidity
37 lines
785 B
Solidity
// SPDX-License-Identifier: MIT
|
|
pragma solidity 0.8.10;
|
|
import "@openzeppelin/contracts/access/Ownable.sol";
|
|
|
|
contract TimeChecker is Ownable {
|
|
uint256 public duration;
|
|
uint256 public minDuration;
|
|
|
|
event DurationUpdated(uint256 indexed duration);
|
|
|
|
constructor() {
|
|
duration = 1 days;
|
|
minDuration = 30 minutes;
|
|
}
|
|
|
|
/**
|
|
* @dev Check if the time is valid
|
|
*/
|
|
modifier timeValid(uint256 time) {
|
|
require(
|
|
time + duration >= block.timestamp,
|
|
"expired, please send another transaction with new signature"
|
|
);
|
|
_;
|
|
}
|
|
|
|
|
|
/**
|
|
* @dev Change duration value
|
|
*/
|
|
function updateDuation(uint256 valNew) external onlyOwner {
|
|
require(valNew > minDuration, "duration too short");
|
|
duration = valNew;
|
|
emit DurationUpdated(valNew);
|
|
}
|
|
}
|