Contract Diff Checker

Contract Name:
Timelock

Contract Source Code:

File 1 of 1 : Timelock

// Sources flattened with hardhat v2.9.3 https://hardhat.org

// File contracts/peripherals/interfaces/ITimelockTarget.sol

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface ITimelockTarget {
    function setGov(address _gov) external;

    function withdrawToken(
        address _token,
        address _account,
        uint256 _amount
    ) external;
}


// File contracts/peripherals/interfaces/ITimelock.sol


pragma solidity 0.6.12;

interface ITimelock {
    function setAdmin(address _admin) external;

    function enableLeverage(address _vault) external;

    function disableLeverage(address _vault) external;

    function setIsLeverageEnabled(address _vault, bool _isLeverageEnabled) external;

    function signalSetGov(address _target, address _gov) external;

    function managedSetHandler(
        address _target,
        address _handler,
        bool _isActive
    ) external;

    function managedSetMinter(
        address _target,
        address _minter,
        bool _isActive
    ) external;
}


// File contracts/peripherals/interfaces/IHandlerTarget.sol


pragma solidity 0.6.12;

interface IHandlerTarget {
    function isHandler(address _account) external returns (bool);

    function setHandler(address _handler, bool _isActive) external;
}


// File contracts/access/interfaces/IAdmin.sol


pragma solidity 0.6.12;

interface IAdmin {
    function setAdmin(address _admin) external;
}


// File contracts/core/interfaces/IVaultUtils.sol


pragma solidity 0.6.12;

interface IVaultUtils {
    function updateCumulativeFundingRate(address _collateralToken, address _indexToken) external returns (bool);

    function validateIncreasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _sizeDelta,
        bool _isLong
    ) external view;

    function validateDecreasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _collateralDelta,
        uint256 _sizeDelta,
        bool _isLong,
        address _receiver
    ) external view;

    function validateLiquidation(
        address _account,
        address _collateralToken,
        address _indexToken,
        bool _isLong,
        bool _raise
    ) external view returns (uint256, uint256);

    function getEntryFundingRate(
        address _collateralToken,
        address _indexToken,
        bool _isLong
    ) external view returns (uint256);

    function getPositionFee(
        address _account,
        address _collateralToken,
        address _indexToken,
        bool _isLong,
        uint256 _sizeDelta
    ) external view returns (uint256);

    function getFundingFee(
        address _account,
        address _collateralToken,
        address _indexToken,
        bool _isLong,
        uint256 _size,
        uint256 _entryFundingRate
    ) external view returns (uint256);

    function getBuyUsdgFeeBasisPoints(address _token, uint256 _usdgAmount) external view returns (uint256);

    function getSellUsdgFeeBasisPoints(address _token, uint256 _usdgAmount) external view returns (uint256);

    function getSwapFeeBasisPoints(
        address _tokenIn,
        address _tokenOut,
        uint256 _usdgAmount
    ) external view returns (uint256);

    function getFeeBasisPoints(
        address _token,
        uint256 _usdgDelta,
        uint256 _feeBasisPoints,
        uint256 _taxBasisPoints,
        bool _increment
    ) external view returns (uint256);
}


// File contracts/core/interfaces/IVault.sol


pragma solidity 0.6.12;

interface IVault {
    function isInitialized() external view returns (bool);

    function isSwapEnabled() external view returns (bool);

    function isLeverageEnabled() external view returns (bool);

    function setVaultUtils(IVaultUtils _vaultUtils) external;

    function setError(uint256 _errorCode, string calldata _error) external;

    function router() external view returns (address);

    function usdg() external view returns (address);

    function gov() external view returns (address);

    function whitelistedTokenCount() external view returns (uint256);

    function maxLeverage() external view returns (uint256);

    function minProfitTime() external view returns (uint256);

    function hasDynamicFees() external view returns (bool);

    function fundingInterval() external view returns (uint256);

    function totalTokenWeights() external view returns (uint256);

    function getTargetUsdgAmount(address _token) external view returns (uint256);

    function inManagerMode() external view returns (bool);

    function inPrivateLiquidationMode() external view returns (bool);

    function maxGasPrice() external view returns (uint256);

    function approvedRouters(address _account, address _router) external view returns (bool);

    function isLiquidator(address _account) external view returns (bool);

    function isManager(address _account) external view returns (bool);

    function minProfitBasisPoints(address _token) external view returns (uint256);

    function tokenBalances(address _token) external view returns (uint256);

    function lastFundingTimes(address _token) external view returns (uint256);

    function setMaxLeverage(uint256 _maxLeverage) external;

    function setInManagerMode(bool _inManagerMode) external;

    function setManager(address _manager, bool _isManager) external;

    function setIsSwapEnabled(bool _isSwapEnabled) external;

    function setIsLeverageEnabled(bool _isLeverageEnabled) external;

    function setMaxGasPrice(uint256 _maxGasPrice) external;

    function setUsdgAmount(address _token, uint256 _amount) external;

    function setBufferAmount(address _token, uint256 _amount) external;

    function setMaxGlobalShortSize(address _token, uint256 _amount) external;

    function setInPrivateLiquidationMode(bool _inPrivateLiquidationMode) external;

    function setLiquidator(address _liquidator, bool _isActive) external;

    function setFundingRate(
        uint256 _fundingInterval,
        uint256 _fundingRateFactor,
        uint256 _stableFundingRateFactor
    ) external;

    function setFees(
        uint256 _taxBasisPoints,
        uint256 _stableTaxBasisPoints,
        uint256 _mintBurnFeeBasisPoints,
        uint256 _swapFeeBasisPoints,
        uint256 _stableSwapFeeBasisPoints,
        uint256 _marginFeeBasisPoints,
        uint256 _liquidationFeeUsd,
        uint256 _minProfitTime,
        bool _hasDynamicFees
    ) external;

    function setTokenConfig(
        address _token,
        uint256 _tokenDecimals,
        uint256 _redemptionBps,
        uint256 _minProfitBps,
        uint256 _maxUsdgAmount,
        bool _isStable,
        bool _isShortable
    ) external;

    function setPriceFeed(address _priceFeed) external;

    function withdrawFees(address _token, address _receiver) external returns (uint256);

    function directPoolDeposit(address _token) external;

    function buyUSDG(address _token, address _receiver) external returns (uint256);

    function sellUSDG(address _token, address _receiver) external returns (uint256);

    function swap(
        address _tokenIn,
        address _tokenOut,
        address _receiver
    ) external returns (uint256);

    function increasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _sizeDelta,
        bool _isLong
    ) external;

    function decreasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _collateralDelta,
        uint256 _sizeDelta,
        bool _isLong,
        address _receiver
    ) external returns (uint256);

    function liquidatePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        bool _isLong,
        address _feeReceiver
    ) external;

    function tokenToUsdMin(address _token, uint256 _tokenAmount) external view returns (uint256);

    function priceFeed() external view returns (address);

    function fundingRateFactor() external view returns (uint256);

    function stableFundingRateFactor() external view returns (uint256);

    function cumulativeFundingRates(address _token) external view returns (uint256);

    function getNextFundingRate(address _token) external view returns (uint256);

    function getFeeBasisPoints(
        address _token,
        uint256 _usdgDelta,
        uint256 _feeBasisPoints,
        uint256 _taxBasisPoints,
        bool _increment
    ) external view returns (uint256);

    function liquidationFeeUsd() external view returns (uint256);

    function taxBasisPoints() external view returns (uint256);

    function stableTaxBasisPoints() external view returns (uint256);

    function mintBurnFeeBasisPoints() external view returns (uint256);

    function swapFeeBasisPoints() external view returns (uint256);

    function stableSwapFeeBasisPoints() external view returns (uint256);

    function marginFeeBasisPoints() external view returns (uint256);

    function allWhitelistedTokensLength() external view returns (uint256);

    function allWhitelistedTokens(uint256) external view returns (address);

    function whitelistedTokens(address _token) external view returns (bool);

    function stableTokens(address _token) external view returns (bool);

    function shortableTokens(address _token) external view returns (bool);

    function feeReserves(address _token) external view returns (uint256);

    function globalShortSizes(address _token) external view returns (uint256);

    function globalShortAveragePrices(address _token) external view returns (uint256);

    function maxGlobalShortSizes(address _token) external view returns (uint256);

    function tokenDecimals(address _token) external view returns (uint256);

    function tokenWeights(address _token) external view returns (uint256);

    function guaranteedUsd(address _token) external view returns (uint256);

    function poolAmounts(address _token) external view returns (uint256);

    function bufferAmounts(address _token) external view returns (uint256);

    function reservedAmounts(address _token) external view returns (uint256);

    function usdgAmounts(address _token) external view returns (uint256);

    function maxUsdgAmounts(address _token) external view returns (uint256);

    function getRedemptionAmount(address _token, uint256 _usdgAmount) external view returns (uint256);

    function getMaxPrice(address _token) external view returns (uint256);

    function getMinPrice(address _token) external view returns (uint256);

    function getDelta(
        address _indexToken,
        uint256 _size,
        uint256 _averagePrice,
        bool _isLong,
        uint256 _lastIncreasedTime
    ) external view returns (bool, uint256);

    function getPosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        bool _isLong
    )
        external
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256,
            bool,
            uint256
        );
}


// File contracts/core/interfaces/IVaultPriceFeed.sol


pragma solidity 0.6.12;

interface IVaultPriceFeed {
    function adjustmentBasisPoints(address _token) external view returns (uint256);

    function isAdjustmentAdditive(address _token) external view returns (bool);

    function setAdjustment(
        address _token,
        bool _isAdditive,
        uint256 _adjustmentBps
    ) external;

    function setUseV2Pricing(bool _useV2Pricing) external;

    function setIsAmmEnabled(bool _isEnabled) external;

    function setIsSecondaryPriceEnabled(bool _isEnabled) external;

    function setSpreadBasisPoints(address _token, uint256 _spreadBasisPoints) external;

    function setSpreadThresholdBasisPoints(uint256 _spreadThresholdBasisPoints) external;

    function setFavorPrimaryPrice(bool _favorPrimaryPrice) external;

    function setPriceSampleSpace(uint256 _priceSampleSpace) external;

    function setMaxStrictPriceDeviation(uint256 _maxStrictPriceDeviation) external;

    function getPrice(
        address _token,
        bool _maximise,
        bool _includeAmmPrice,
        bool _useSwapPricing
    ) external view returns (uint256);

    function getAmmPrice(address _token) external view returns (uint256);

    function getPrimaryPrice(address _token, bool _maximise) external view returns (uint256);

    function setTokenConfig(
        address _token,
        address _priceFeed,
        uint256 _priceDecimals,
        bool _isStrictStable
    ) external;
}


// File contracts/core/interfaces/IRouter.sol


pragma solidity 0.6.12;

interface IRouter {
    function addPlugin(address _plugin) external;

    function pluginTransfer(
        address _token,
        address _account,
        address _receiver,
        uint256 _amount
    ) external;

    function pluginIncreasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _sizeDelta,
        bool _isLong
    ) external;

    function pluginDecreasePosition(
        address _account,
        address _collateralToken,
        address _indexToken,
        uint256 _collateralDelta,
        uint256 _sizeDelta,
        bool _isLong,
        address _receiver
    ) external returns (uint256);

    function swap(
        address[] memory _path,
        uint256 _amountIn,
        uint256 _minOut,
        address _receiver
    ) external;
}


// File contracts/tokens/interfaces/IYieldToken.sol


pragma solidity 0.6.12;

interface IYieldToken {
    function totalStaked() external view returns (uint256);

    function stakedBalance(address _account) external view returns (uint256);

    function removeAdmin(address _account) external;
}


// File contracts/tokens/interfaces/IBaseToken.sol


pragma solidity 0.6.12;

interface IBaseToken {
    function totalStaked() external view returns (uint256);

    function stakedBalance(address _account) external view returns (uint256);

    function removeAdmin(address _account) external;

    function setInPrivateTransferMode(bool _inPrivateTransferMode) external;

    function withdrawToken(
        address _token,
        address _account,
        uint256 _amount
    ) external;
}


// File contracts/tokens/interfaces/IMintable.sol


pragma solidity 0.6.12;

interface IMintable {
    function isMinter(address _account) external returns (bool);

    function setMinter(address _minter, bool _isActive) external;

    function mint(address _account, uint256 _amount) external;

    function burn(address _account, uint256 _amount) external;
}


// File contracts/tokens/interfaces/IUSDG.sol


pragma solidity 0.6.12;

interface IUSDG {
    function addVault(address _vault) external;

    function removeVault(address _vault) external;

    function mint(address _account, uint256 _amount) external;

    function burn(address _account, uint256 _amount) external;
}


// File contracts/staking/interfaces/IVester.sol


pragma solidity 0.6.12;

interface IVester {
    function rewardTracker() external view returns (address);

    function claimForAccount(address _account, address _receiver) external returns (uint256);

    function claimable(address _account) external view returns (uint256);

    function cumulativeClaimAmounts(address _account) external view returns (uint256);

    function claimedAmounts(address _account) external view returns (uint256);

    function pairAmounts(address _account) external view returns (uint256);

    function getVestedAmount(address _account) external view returns (uint256);

    function transferredAverageStakedAmounts(address _account) external view returns (uint256);

    function transferredCumulativeRewards(address _account) external view returns (uint256);

    function cumulativeRewardDeductions(address _account) external view returns (uint256);

    function bonusRewards(address _account) external view returns (uint256);

    function transferStakeValues(address _sender, address _receiver) external;

    function setTransferredAverageStakedAmounts(address _account, uint256 _amount) external;

    function setTransferredCumulativeRewards(address _account, uint256 _amount) external;

    function setCumulativeRewardDeductions(address _account, uint256 _amount) external;

    function setBonusRewards(address _account, uint256 _amount) external;

    function getMaxVestableAmount(address _account) external view returns (uint256);

    function getCombinedAverageStakedAmount(address _account) external view returns (uint256);
}


// File contracts/libraries/math/SafeMath.sol


pragma solidity 0.6.12;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}


// File contracts/libraries/token/IERC20.sol


pragma solidity 0.6.12;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


// File contracts/peripherals/Timelock.sol


pragma solidity 0.6.12;














contract Timelock is ITimelock {
    using SafeMath for uint256;

    uint256 public constant PRICE_PRECISION = 10**30;
    uint256 public constant MAX_BUFFER = 5 days;
    uint256 public constant MAX_FUNDING_RATE_FACTOR = 200; // 0.02%
    uint256 public constant MAX_LEVERAGE_VALIDATION = 500000; // 50x

    uint256 public buffer;
    address public admin;

    address public tokenManager;
    address public rewardManager;
    address public mintReceiver;
    uint256 public maxTokenSupply;

    uint256 public marginFeeBasisPoints;
    uint256 public maxMarginFeeBasisPoints;
    bool public shouldToggleIsLeverageEnabled;

    mapping(bytes32 => uint256) public pendingActions;
    mapping(address => bool) public excludedTokens;

    mapping(address => bool) public isHandler;

    event SignalPendingAction(bytes32 action);
    event SignalApprove(address token, address spender, uint256 amount, bytes32 action);
    event SignalWithdrawToken(address target, address token, address receiver, uint256 amount, bytes32 action);
    event SignalMint(address token, address receiver, uint256 amount, bytes32 action);
    event SignalSetGov(address target, address gov, bytes32 action);
    event SignalSetHandler(address target, address handler, bool isActive, bytes32 action);
    event SignalSetPriceFeed(address vault, address priceFeed, bytes32 action);
    event SignalAddPlugin(address router, address plugin, bytes32 action);
    event SignalRedeemUsdg(address vault, address token, uint256 amount);
    event SignalVaultSetTokenConfig(
        address vault,
        address token,
        uint256 tokenDecimals,
        uint256 tokenWeight,
        uint256 minProfitBps,
        uint256 maxUsdgAmount,
        bool isStable,
        bool isShortable
    );
    event SignalPriceFeedSetTokenConfig(
        address vaultPriceFeed,
        address token,
        address priceFeed,
        uint256 priceDecimals,
        bool isStrictStable
    );
    event ClearAction(bytes32 action);

    modifier onlyAdmin() {
        require(msg.sender == admin, "Timelock: forbidden");
        _;
    }

    modifier onlyAdminOrHandler() {
        require(msg.sender == admin || isHandler[msg.sender], "Timelock: forbidden");
        _;
    }

    modifier onlyTokenManager() {
        require(msg.sender == tokenManager, "Timelock: forbidden");
        _;
    }

    modifier onlyRewardManager() {
        require(msg.sender == rewardManager, "Timelock: forbidden");
        _;
    }

    constructor(
        address _admin,
        uint256 _buffer,
        address _rewardManager,
        address _tokenManager,
        address _mintReceiver,
        uint256 _maxTokenSupply,
        uint256 _marginFeeBasisPoints,
        uint256 _maxMarginFeeBasisPoints
    ) public {
        require(_buffer <= MAX_BUFFER, "Timelock: invalid _buffer");
        admin = _admin;
        buffer = _buffer;
        rewardManager = _rewardManager;
        tokenManager = _tokenManager;
        mintReceiver = _mintReceiver;
        maxTokenSupply = _maxTokenSupply;

        marginFeeBasisPoints = _marginFeeBasisPoints;
        maxMarginFeeBasisPoints = _maxMarginFeeBasisPoints;
    }

    function setAdmin(address _admin) external override onlyTokenManager {
        admin = _admin;
    }

    function setExternalAdmin(address _target, address _admin) external onlyAdmin {
        require(_target != address(this), "Timelock: invalid _target");
        IAdmin(_target).setAdmin(_admin);
    }

    function setContractHandler(address _handler, bool _isActive) external onlyAdmin {
        isHandler[_handler] = _isActive;
    }

    function setBuffer(uint256 _buffer) external onlyAdmin {
        require(_buffer <= MAX_BUFFER, "Timelock: invalid _buffer");
        require(_buffer > buffer, "Timelock: buffer cannot be decreased");
        buffer = _buffer;
    }

    function mint(address _token, uint256 _amount) external onlyAdmin {
        _mint(_token, mintReceiver, _amount);
    }

    function setMaxLeverage(address _vault, uint256 _maxLeverage) external onlyAdmin {
        require(_maxLeverage > MAX_LEVERAGE_VALIDATION, "Timelock: invalid _maxLeverage");
        IVault(_vault).setMaxLeverage(_maxLeverage);
    }

    function setFundingRate(
        address _vault,
        uint256 _fundingInterval,
        uint256 _fundingRateFactor,
        uint256 _stableFundingRateFactor
    ) external onlyAdmin {
        require(_fundingRateFactor < MAX_FUNDING_RATE_FACTOR, "Timelock: invalid _fundingRateFactor");
        require(_stableFundingRateFactor < MAX_FUNDING_RATE_FACTOR, "Timelock: invalid _stableFundingRateFactor");
        IVault(_vault).setFundingRate(_fundingInterval, _fundingRateFactor, _stableFundingRateFactor);
    }

    function setShouldToggleIsLeverageEnabled(bool _shouldToggleIsLeverageEnabled) external onlyAdmin {
        shouldToggleIsLeverageEnabled = _shouldToggleIsLeverageEnabled;
    }

    function setMarginFeeBasisPoints(uint256 _marginFeeBasisPoints, uint256 _maxMarginFeeBasisPoints)
        external
        onlyAdmin
    {
        marginFeeBasisPoints = _marginFeeBasisPoints;
        maxMarginFeeBasisPoints = _maxMarginFeeBasisPoints;
    }

    // assign _marginFeeBasisPoints to this.marginFeeBasisPoints
    // because enableLeverage would update Vault.marginFeeBasisPoints to this.marginFeeBasisPoints
    // and disableLeverage would reset the Vault.marginFeeBasisPoints to this.maxMarginFeeBasisPoints
    function setFees(
        address _vault,
        uint256 _taxBasisPoints,
        uint256 _stableTaxBasisPoints,
        uint256 _mintBurnFeeBasisPoints,
        uint256 _swapFeeBasisPoints,
        uint256 _stableSwapFeeBasisPoints,
        uint256 _marginFeeBasisPoints,
        uint256 _liquidationFeeUsd,
        uint256 _minProfitTime,
        bool _hasDynamicFees
    ) external onlyAdmin {
        marginFeeBasisPoints = _marginFeeBasisPoints;

        IVault(_vault).setFees(
            _taxBasisPoints,
            _stableTaxBasisPoints,
            _mintBurnFeeBasisPoints,
            _swapFeeBasisPoints,
            _stableSwapFeeBasisPoints,
            maxMarginFeeBasisPoints,
            _liquidationFeeUsd,
            _minProfitTime,
            _hasDynamicFees
        );
    }

    function enableLeverage(address _vault) external override onlyAdminOrHandler {
        IVault vault = IVault(_vault);

        if (shouldToggleIsLeverageEnabled) {
            vault.setIsLeverageEnabled(true);
        }

        vault.setFees(
            vault.taxBasisPoints(),
            vault.stableTaxBasisPoints(),
            vault.mintBurnFeeBasisPoints(),
            vault.swapFeeBasisPoints(),
            vault.stableSwapFeeBasisPoints(),
            marginFeeBasisPoints,
            vault.liquidationFeeUsd(),
            vault.minProfitTime(),
            vault.hasDynamicFees()
        );
    }

    function disableLeverage(address _vault) external override onlyAdminOrHandler {
        IVault vault = IVault(_vault);

        if (shouldToggleIsLeverageEnabled) {
            vault.setIsLeverageEnabled(false);
        }

        vault.setFees(
            vault.taxBasisPoints(),
            vault.stableTaxBasisPoints(),
            vault.mintBurnFeeBasisPoints(),
            vault.swapFeeBasisPoints(),
            vault.stableSwapFeeBasisPoints(),
            maxMarginFeeBasisPoints, // marginFeeBasisPoints
            vault.liquidationFeeUsd(),
            vault.minProfitTime(),
            vault.hasDynamicFees()
        );
    }

    function setIsLeverageEnabled(address _vault, bool _isLeverageEnabled) external override onlyAdminOrHandler {
        IVault(_vault).setIsLeverageEnabled(_isLeverageEnabled);
    }

    function setTokenConfig(
        address _vault,
        address _token,
        uint256 _tokenWeight,
        uint256 _minProfitBps,
        uint256 _maxUsdgAmount,
        uint256 _bufferAmount,
        uint256 _usdgAmount
    ) external onlyAdmin {
        require(_minProfitBps <= 500, "Timelock: invalid _minProfitBps");

        IVault vault = IVault(_vault);
        require(vault.whitelistedTokens(_token), "Timelock: token not yet whitelisted");

        uint256 tokenDecimals = vault.tokenDecimals(_token);
        bool isStable = vault.stableTokens(_token);
        bool isShortable = vault.shortableTokens(_token);

        IVault(_vault).setTokenConfig(
            _token,
            tokenDecimals,
            _tokenWeight,
            _minProfitBps,
            _maxUsdgAmount,
            isStable,
            isShortable
        );

        IVault(_vault).setBufferAmount(_token, _bufferAmount);

        IVault(_vault).setUsdgAmount(_token, _usdgAmount);
    }

    function setMaxGlobalShortSize(
        address _vault,
        address _token,
        uint256 _amount
    ) external onlyAdmin {
        IVault(_vault).setMaxGlobalShortSize(_token, _amount);
    }

    function removeAdmin(address _token, address _account) external onlyAdmin {
        IYieldToken(_token).removeAdmin(_account);
    }

    function setIsAmmEnabled(address _priceFeed, bool _isEnabled) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setIsAmmEnabled(_isEnabled);
    }

    function setIsSecondaryPriceEnabled(address _priceFeed, bool _isEnabled) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setIsSecondaryPriceEnabled(_isEnabled);
    }

    function setMaxStrictPriceDeviation(address _priceFeed, uint256 _maxStrictPriceDeviation) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setMaxStrictPriceDeviation(_maxStrictPriceDeviation);
    }

    function setUseV2Pricing(address _priceFeed, bool _useV2Pricing) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setUseV2Pricing(_useV2Pricing);
    }

    function setAdjustment(
        address _priceFeed,
        address _token,
        bool _isAdditive,
        uint256 _adjustmentBps
    ) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setAdjustment(_token, _isAdditive, _adjustmentBps);
    }

    function setSpreadBasisPoints(
        address _priceFeed,
        address _token,
        uint256 _spreadBasisPoints
    ) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setSpreadBasisPoints(_token, _spreadBasisPoints);
    }

    function setSpreadThresholdBasisPoints(address _priceFeed, uint256 _spreadThresholdBasisPoints) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setSpreadThresholdBasisPoints(_spreadThresholdBasisPoints);
    }

    function setFavorPrimaryPrice(address _priceFeed, bool _favorPrimaryPrice) external onlyAdmin {
        IVaultPriceFeed(_priceFeed).setFavorPrimaryPrice(_favorPrimaryPrice);
    }

    function setPriceSampleSpace(address _priceFeed, uint256 _priceSampleSpace) external onlyAdmin {
        require(_priceSampleSpace <= 5, "Invalid _priceSampleSpace");
        IVaultPriceFeed(_priceFeed).setPriceSampleSpace(_priceSampleSpace);
    }

    function setIsSwapEnabled(address _vault, bool _isSwapEnabled) external onlyAdmin {
        IVault(_vault).setIsSwapEnabled(_isSwapEnabled);
    }

    function setVaultUtils(address _vault, IVaultUtils _vaultUtils) external onlyAdmin {
        IVault(_vault).setVaultUtils(_vaultUtils);
    }

    function setMaxGasPrice(address _vault, uint256 _maxGasPrice) external onlyAdmin {
        require(_maxGasPrice > 5000000000, "Invalid _maxGasPrice");
        IVault(_vault).setMaxGasPrice(_maxGasPrice);
    }

    function withdrawFees(
        address _vault,
        address _token,
        address _receiver
    ) external onlyAdmin {
        IVault(_vault).withdrawFees(_token, _receiver);
    }

    function setInPrivateLiquidationMode(address _vault, bool _inPrivateLiquidationMode) external onlyAdmin {
        IVault(_vault).setInPrivateLiquidationMode(_inPrivateLiquidationMode);
    }

    function setLiquidator(
        address _vault,
        address _liquidator,
        bool _isActive
    ) external onlyAdmin {
        IVault(_vault).setLiquidator(_liquidator, _isActive);
    }

    function addExcludedToken(address _token) external onlyAdmin {
        excludedTokens[_token] = true;
    }

    function setInPrivateTransferMode(address _token, bool _inPrivateTransferMode) external onlyAdmin {
        if (excludedTokens[_token]) {
            // excludedTokens can only have their transfers enabled
            require(_inPrivateTransferMode == false, "Timelock: invalid _inPrivateTransferMode");
        }

        IBaseToken(_token).setInPrivateTransferMode(_inPrivateTransferMode);
    }

    function managedSetHandler(
        address _target,
        address _handler,
        bool _isActive
    ) external override onlyRewardManager {
        IHandlerTarget(_target).setHandler(_handler, _isActive);
    }

    function managedSetMinter(
        address _target,
        address _minter,
        bool _isActive
    ) external override onlyRewardManager {
        IMintable(_target).setMinter(_minter, _isActive);
    }

    function batchSetBonusRewards(
        address _vester,
        address[] memory _accounts,
        uint256[] memory _amounts
    ) external onlyAdmin {
        require(_accounts.length == _amounts.length, "Timelock: invalid lengths");

        if (!IHandlerTarget(_vester).isHandler(address(this))) {
            IHandlerTarget(_vester).setHandler(address(this), true);
        }

        for (uint256 i = 0; i < _accounts.length; i++) {
            address account = _accounts[i];
            uint256 amount = _amounts[i];
            IVester(_vester).setBonusRewards(account, amount);
        }
    }

    function transferIn(
        address _sender,
        address _token,
        uint256 _amount
    ) external onlyAdmin {
        IERC20(_token).transferFrom(_sender, address(this), _amount);
    }

    function signalApprove(
        address _token,
        address _spender,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("approve", _token, _spender, _amount));
        _setPendingAction(action);
        emit SignalApprove(_token, _spender, _amount, action);
    }

    function approve(
        address _token,
        address _spender,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("approve", _token, _spender, _amount));
        _validateAction(action);
        _clearAction(action);
        IERC20(_token).approve(_spender, _amount);
    }

    function signalWithdrawToken(
        address _target,
        address _token,
        address _receiver,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("withdrawToken", _target, _token, _receiver, _amount));
        _setPendingAction(action);
        emit SignalWithdrawToken(_target, _token, _receiver, _amount, action);
    }

    function withdrawToken(
        address _target,
        address _token,
        address _receiver,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("withdrawToken", _target, _token, _receiver, _amount));
        _validateAction(action);
        _clearAction(action);
        IBaseToken(_target).withdrawToken(_token, _receiver, _amount);
    }

    function signalMint(
        address _token,
        address _receiver,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("mint", _token, _receiver, _amount));
        _setPendingAction(action);
        emit SignalMint(_token, _receiver, _amount, action);
    }

    function processMint(
        address _token,
        address _receiver,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("mint", _token, _receiver, _amount));
        _validateAction(action);
        _clearAction(action);

        _mint(_token, _receiver, _amount);
    }

    function signalSetGov(address _target, address _gov) external override onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setGov", _target, _gov));
        _setPendingAction(action);
        emit SignalSetGov(_target, _gov, action);
    }

    function setGov(address _target, address _gov) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setGov", _target, _gov));
        _validateAction(action);
        _clearAction(action);
        ITimelockTarget(_target).setGov(_gov);
    }

    function signalSetHandler(
        address _target,
        address _handler,
        bool _isActive
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setHandler", _target, _handler, _isActive));
        _setPendingAction(action);
        emit SignalSetHandler(_target, _handler, _isActive, action);
    }

    function setHandler(
        address _target,
        address _handler,
        bool _isActive
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setHandler", _target, _handler, _isActive));
        _validateAction(action);
        _clearAction(action);
        IHandlerTarget(_target).setHandler(_handler, _isActive);
    }

    function signalSetPriceFeed(address _vault, address _priceFeed) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setPriceFeed", _vault, _priceFeed));
        _setPendingAction(action);
        emit SignalSetPriceFeed(_vault, _priceFeed, action);
    }

    function setPriceFeed(address _vault, address _priceFeed) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("setPriceFeed", _vault, _priceFeed));
        _validateAction(action);
        _clearAction(action);
        IVault(_vault).setPriceFeed(_priceFeed);
    }

    function signalAddPlugin(address _router, address _plugin) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("addPlugin", _router, _plugin));
        _setPendingAction(action);
        emit SignalAddPlugin(_router, _plugin, action);
    }

    function addPlugin(address _router, address _plugin) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("addPlugin", _router, _plugin));
        _validateAction(action);
        _clearAction(action);
        IRouter(_router).addPlugin(_plugin);
    }

    function signalRedeemUsdg(
        address _vault,
        address _token,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("redeemUsdg", _vault, _token, _amount));
        _setPendingAction(action);
        emit SignalRedeemUsdg(_vault, _token, _amount);
    }

    function redeemUsdg(
        address _vault,
        address _token,
        uint256 _amount
    ) external onlyAdmin {
        bytes32 action = keccak256(abi.encodePacked("redeemUsdg", _vault, _token, _amount));
        _validateAction(action);
        _clearAction(action);

        address usdg = IVault(_vault).usdg();
        IVault(_vault).setManager(address(this), true);
        IUSDG(usdg).addVault(address(this));

        IUSDG(usdg).mint(address(this), _amount);
        IERC20(usdg).transfer(address(_vault), _amount);

        IVault(_vault).sellUSDG(_token, mintReceiver);

        IVault(_vault).setManager(address(this), false);
        IUSDG(usdg).removeVault(address(this));
    }

    function signalVaultSetTokenConfig(
        address _vault,
        address _token,
        uint256 _tokenDecimals,
        uint256 _tokenWeight,
        uint256 _minProfitBps,
        uint256 _maxUsdgAmount,
        bool _isStable,
        bool _isShortable
    ) external onlyAdmin {
        bytes32 action = keccak256(
            abi.encodePacked(
                "vaultSetTokenConfig",
                _vault,
                _token,
                _tokenDecimals,
                _tokenWeight,
                _minProfitBps,
                _maxUsdgAmount,
                _isStable,
                _isShortable
            )
        );

        _setPendingAction(action);

        emit SignalVaultSetTokenConfig(
            _vault,
            _token,
            _tokenDecimals,
            _tokenWeight,
            _minProfitBps,
            _maxUsdgAmount,
            _isStable,
            _isShortable
        );
    }

    function vaultSetTokenConfig(
        address _vault,
        address _token,
        uint256 _tokenDecimals,
        uint256 _tokenWeight,
        uint256 _minProfitBps,
        uint256 _maxUsdgAmount,
        bool _isStable,
        bool _isShortable
    ) external onlyAdmin {
        bytes32 action = keccak256(
            abi.encodePacked(
                "vaultSetTokenConfig",
                _vault,
                _token,
                _tokenDecimals,
                _tokenWeight,
                _minProfitBps,
                _maxUsdgAmount,
                _isStable,
                _isShortable
            )
        );

        _validateAction(action);
        _clearAction(action);

        IVault(_vault).setTokenConfig(
            _token,
            _tokenDecimals,
            _tokenWeight,
            _minProfitBps,
            _maxUsdgAmount,
            _isStable,
            _isShortable
        );
    }

    function signalPriceFeedSetTokenConfig(
        address _vaultPriceFeed,
        address _token,
        address _priceFeed,
        uint256 _priceDecimals,
        bool _isStrictStable
    ) external onlyAdmin {
        bytes32 action = keccak256(
            abi.encodePacked(
                "priceFeedSetTokenConfig",
                _vaultPriceFeed,
                _token,
                _priceFeed,
                _priceDecimals,
                _isStrictStable
            )
        );

        _setPendingAction(action);

        emit SignalPriceFeedSetTokenConfig(_vaultPriceFeed, _token, _priceFeed, _priceDecimals, _isStrictStable);
    }

    function priceFeedSetTokenConfig(
        address _vaultPriceFeed,
        address _token,
        address _priceFeed,
        uint256 _priceDecimals,
        bool _isStrictStable
    ) external onlyAdmin {
        bytes32 action = keccak256(
            abi.encodePacked(
                "priceFeedSetTokenConfig",
                _vaultPriceFeed,
                _token,
                _priceFeed,
                _priceDecimals,
                _isStrictStable
            )
        );

        _validateAction(action);
        _clearAction(action);

        IVaultPriceFeed(_vaultPriceFeed).setTokenConfig(_token, _priceFeed, _priceDecimals, _isStrictStable);
    }

    function cancelAction(bytes32 _action) external onlyAdmin {
        _clearAction(_action);
    }

    function _mint(
        address _token,
        address _receiver,
        uint256 _amount
    ) private {
        IMintable mintable = IMintable(_token);

        if (!mintable.isMinter(address(this))) {
            mintable.setMinter(address(this), true);
        }

        mintable.mint(_receiver, _amount);
        require(IERC20(_token).totalSupply() <= maxTokenSupply, "Timelock: maxTokenSupply exceeded");
    }

    function _setPendingAction(bytes32 _action) private {
        pendingActions[_action] = block.timestamp.add(buffer);
        emit SignalPendingAction(_action);
    }

    function _validateAction(bytes32 _action) private view {
        require(pendingActions[_action] != 0, "Timelock: action not signalled");
        require(pendingActions[_action] < block.timestamp, "Timelock: action time not yet passed");
    }

    function _clearAction(bytes32 _action) private {
        require(pendingActions[_action] != 0, "Timelock: invalid _action");
        delete pendingActions[_action];
        emit ClearAction(_action);
    }
}

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