access

Access

Contracts

• TimeLock

Provides a way to limit access to time locked function.
E.g. a user can only call a function once in a 3 days span.

/!\ Warning: Be wary that this contract uses block.timestamp and its value can be manipulated by miners.
Therefore a duration under 15 minutes should be avoided for non trivial actions.

Limitations: Each timeLocked function will share the same locking mechanism.
You may use TimeLockGroups for that purpose.

pragma solidity ^0.8.18;

import {TimeLock} "soliv/contracts/access/TimeLock.sol";

contract SharedVault is TimeLock {
    constructor() TimeLock(3 days) {}

    partialWithdraw() public timeLocked {
        uint amountWithdrawn = 0.01 ether;
        require(address(this).balance >= amountWithdrawn, "Insufficient funds");
        (bool sent,) = msg.sender.call{value: amountWithdrawn}("");
        require(sent, "Failed to withdraw");
    }
}

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• TimeLockGroups

Expands on the TimeLock contract to provide multiple time-locked access to functions. With this you can apply different lock durations to different functions or function groups.

E.g., a user may only call functions in GOUVERNANCE once every 3 days, but functions in APPLICATION can be called once a day.

"Locks" are referred to by their bytes32 identifier and should be unique. Refer to the example below to see how to create and use one.

/!\ Warning: Be wary that this contract uses block.timestamp and its value can be manipulated by miners.
Therefore a duration under 15 minutes should be avoided for non trivial actions.

pragma solidity ^0.8.18;

import {TimeLockGroups} from "soliv/contracts/access/TimeLockGroups.sol";

contract MyDAO is TimeLockGroups {
    bytes32 public constant GOUVERNANCE_LOCK = keccak256("GOUVERNANCE");
    bytes32 public constant APPLICATION_LOCK = keccak256("APPLICATION");

    constructor() {
        _setDuration(GOUVERNANCE_LOCK, 3 days);
        _setDuration(APPLICATION_LOCK, 1 days);
    }

    function voteBan() external timeLocked(GOUVERNANCE_LOCK) {
      // ...
    }

    function createProposal() external timeLocked(GOUVERNANCE_LOCK) {
      // ...
    }

    function approve() external timeLocked(APPLICATION_LOCK) {
      // ...
    }
}