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•  contract GebAuth
•    - function addAuthorization(address acc ...
•    - function removeAuthorization(address ...
•    - function modifyParameters(
•    - function connectSAFESaviour(address)
•    - function disconnectSAFESaviour(addres ...
•  contract MinimalLiquidationEngineO ... *
•    - function both(bool x, bool y)
•    - function modifyParameters(
•    - function connectSAFESaviour(address s ...
•    - function disconnectSAFESaviour(addres ...

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/**
 *Submitted for verification at Etherscan.io on 2022-07-19
*/

pragma solidity 0.6.7;

contract GebAuth {
    // --- Authorization ---
    mapping (address => uint) public authorizedAccounts;
    /**
     * @notice Add auth to an account
     * @param account Account to add auth to
     */
    function addAuthorization(address account) external isAuthorized {
        authorizedAccounts[account] = 1;
        emit AddAuthorization(account);
    }
    /**
     * @notice Remove auth from an account
     * @param account Account to remove auth from
     */
    function removeAuthorization(address account) external isAuthorized {
        authorizedAccounts[account] = 0;
        emit RemoveAuthorization(account);
    }
    /**
    * @notice Checks whether msg.sender can call an authed function
    **/
    modifier isAuthorized {
        require(authorizedAccounts[msg.sender] == 1, "GebAuth/account-not-authorized");
        _;
    }

    // --- Events ---
    event AddAuthorization(address account);
    event RemoveAuthorization(address account);

    constructor () public {
        authorizedAccounts[msg.sender] = 1;
        emit AddAuthorization(msg.sender);
    }
}

abstract contract LiquidationEngineLike {
    function modifyParameters(
        bytes32 collateralType,
        bytes32 parameter,
        uint256 data
    ) external virtual;
    function connectSAFESaviour(address) virtual external;
    function disconnectSAFESaviour(address) virtual external;
}

contract MinimalLiquidationEngineOverlay is GebAuth {
    // Minimum and maximum possible penalty for any collateral type liquidation
    uint256               public minPenalty;
    uint256               public maxPenalty;

    LiquidationEngineLike public liquidationEngine;

    constructor(address liquidationEngine_, uint256 minPenalty_, uint256 maxPenalty_) public GebAuth() {
        require(liquidationEngine_ != address(0), "MinimalLiquidationEngineOverlay/null-address");
        require(both(minPenalty_ < maxPenalty_, minPenalty_ > 0), "MinimalLiquidationEngineOverlay/invalid-penalty-bounds");

        liquidationEngine = LiquidationEngineLike(liquidationEngine_);
        minPenalty        = minPenalty_;
        maxPenalty        = maxPenalty_;
    }

    // --- Boolean Logic ---
    function both(bool x, bool y) internal pure returns (bool z) {
        assembly{ z := and(x, y)}
    }

    /**
     * @notice Modify a collateral's liquidation penalty
     * @param collateralType The collateral type we change parameters for
     * @param parameter The name of the parameter (must be "liquidationPenalty")
     * @param data New value for the penalty
     */
    function modifyParameters(
        bytes32 collateralType,
        bytes32 parameter,
        uint256 data
    ) external isAuthorized {
        require(parameter == "liquidationPenalty", "MinimalLiquidationEngineOverlay/invalid-param-name");
        require(both(data >= minPenalty, data <= maxPenalty), "MinimalLiquidationEngineOverlay/invalid-new-penalty");
        liquidationEngine.modifyParameters(collateralType, parameter, data);
    }

    /*
    * @notify Connect a new safe saviour to the LiquidationEngine
    * @param saviour The new saviour address
    */
    function connectSAFESaviour(address saviour) external isAuthorized {
        liquidationEngine.connectSAFESaviour(saviour);
    }
    /*
    * @notify Disconnect an existing safe saviour from the LiquidationEngine
    * @param saviour The saviour address to disconnect
    */
    function disconnectSAFESaviour(address saviour) external isAuthorized {
        liquidationEngine.disconnectSAFESaviour(saviour);
    }
}

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[{"inputs":[{"internalType":"address","name":"liquidationEngine_","type":"address"},{"internalType":"uint256","name":"minPenalty_","type":"uint256"},{"internalType":"uint256","name":"maxPenalty_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"AddAuthorization","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"RemoveAuthorization","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"addAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"authorizedAccounts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"saviour","type":"address"}],"name":"connectSAFESaviour","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"saviour","type":"address"}],"name":"disconnectSAFESaviour","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"liquidationEngine","outputs":[{"internalType":"contract LiquidationEngineLike","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPenalty","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minPenalty","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"collateralType","type":"bytes32"},{"internalType":"bytes32","name":"parameter","type":"bytes32"},{"internalType":"uint256","name":"data","type":"uint256"}],"name":"modifyParameters","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"removeAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000004ffbaa89d648079faafc7852de49ea1dc92f99760000000000000000000000000000000000000000000000000f207539952d00000000000000000000000000000000000000000000000000000ff59ee833b30000

-----Decoded View---------------
Arg [0] : liquidationEngine_ (address): 0x4fFbAA89d648079Faafc7852dE49EA1dc92f9976
Arg [1] : minPenalty_ (uint256): 1090000000000000000
Arg [2] : maxPenalty_ (uint256): 1150000000000000000

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000004ffbaa89d648079faafc7852de49ea1dc92f9976
Arg [1] : 0000000000000000000000000000000000000000000000000f207539952d0000
Arg [2] : 0000000000000000000000000000000000000000000000000ff59ee833b30000

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ipfs://a6348796609ab8b8d4a7c4d7a446945f72e5e30fb73e46430576a181169e9f12