37 lines
825 B
Solidity
37 lines
825 B
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity 0.8.10;
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import "@openzeppelin/contracts/access/Ownable.sol";
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contract TimeChecker is Ownable {
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uint256 private _duration;
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uint256 private minDuration;
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constructor() {
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_duration = 1 days;
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minDuration = 30 minutes;
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}
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modifier timeValid(uint256 time) {
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require(
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time + _duration >= block.timestamp,
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"expired, please send another transaction with new signature"
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);
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_;
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}
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/**
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* @dev Returns the max duration for function called by user
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*/
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function getDuration() external view returns (uint256 duration) {
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return _duration;
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}
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/**
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* @dev Change duration value
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*/
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function updateDuation(uint256 valNew) external onlyOwner {
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require(valNew > minDuration, "duration too short");
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_duration = valNew;
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}
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}
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