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Outline

•  contract MainnetAuthAddresses
•  contract AuthHelper is MainnetAuth ...
•  contract AdminVault is AuthHelper
•    - function changeOwner(address _owner)
•    - function changeAdmin(address _admin)
• interface IERC20
•    - function name()
•    - function symbol()
•    - function decimals()
•    - function totalSupply()
•    - function balanceOf(address _owner)
•    - function transfer(address _to, uint25 ...
•    - function transferFrom(
•    - function approve(address _spender, ui ...
•    - function allowance(address _owner, ad ...
• library Address
•    - function isContract(address account)
•    - function sendValue(address payable re ...
•    - function functionCall(address target, ...
•    - function functionCall(
•    - function functionCallWithValue(
• functionCallWithValue(target, data, v ...
•    - function functionCallWithValue(
•    - function _functionCallWithValue(
• library SafeERC20
•    - function safeTransfer(IERC20 token, a ...
•    - function safeTransferFrom(IERC20 toke ...
•    - function safeApprove(IERC20 token, ad ...
•    - function _callOptionalReturn(IERC20 t ...
•    - function _callOptionalReturnBool(IERC ...
•  contract AdminAuth is AuthHelper
•    - function withdrawStuckFunds(address _ ...
•    - function kill()
•    - function allowance(address, address)
•    - function balanceOf(address)
•    - function approve(address, uint256)
•    - function transfer(address, uint256)
•    - function transferFrom(
•    - function deposit()
•    - function withdraw(uint256)
•    - function botList(address)
•  contract MainnetUtilAddresses
•  contract UtilHelper is MainnetUtil ...
• library TokenUtils
•    - function approveToken(
•    - function pullTokensIfNeeded(
•    - function withdrawTokens(
•    - function depositWeth(uint256 _amount)
•    - function withdrawWeth(uint256 _amount ...
•    - function getBalance(address _tokenAdd ...
•    - function getTokenDecimals(address _to ...
•  contract BotRefills is AdminAuth, ... *
•    - function refill(uint256 _ethAmount, a ...
•    - function refillMany(uint256[] memory ...
•    - function setRefillCaller(address _new ...
•    - function setFeeAddr(address _newFeeAd ...
•    - function setAdditionalBot(address _bo ...

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/**
 *Submitted for verification at Etherscan.io on 2024-04-05
*/

// SPDX-License-Identifier: MIT
pragma solidity =0.8.10;










contract MainnetAuthAddresses {
    address internal constant ADMIN_VAULT_ADDR = 0xCCf3d848e08b94478Ed8f46fFead3008faF581fD;
    address internal constant DSGUARD_FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;
    address internal constant ADMIN_ADDR = 0x25eFA336886C74eA8E282ac466BdCd0199f85BB9; // USED IN ADMIN VAULT CONSTRUCTOR
    address internal constant PROXY_AUTH_ADDRESS = 0x149667b6FAe2c63D1B4317C716b0D0e4d3E2bD70;
    address internal constant MODULE_AUTH_ADDRESS = 0x7407974DDBF539e552F1d051e44573090912CC3D;
}







contract AuthHelper is MainnetAuthAddresses {
}








contract AdminVault is AuthHelper {
    address public owner;
    address public admin;

    error SenderNotAdmin();

    constructor() {
        owner = msg.sender;
        admin = ADMIN_ADDR;
    }

    /// @notice Admin is able to change owner
    /// @param _owner Address of new owner
    function changeOwner(address _owner) public {
        if (admin != msg.sender){
            revert SenderNotAdmin();
        }
        owner = _owner;
    }

    /// @notice Admin is able to set new admin
    /// @param _admin Address of multisig that becomes new admin
    function changeAdmin(address _admin) public {
        if (admin != msg.sender){
            revert SenderNotAdmin();
        }
        admin = _admin;
    }

}







interface IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint256 digits);
    function totalSupply() external view returns (uint256 supply);

    function balanceOf(address _owner) external view returns (uint256 balance);

    function transfer(address _to, uint256 _value) external returns (bool success);

    function transferFrom(
        address _from,
        address _to,
        uint256 _value
    ) external returns (bool success);

    function approve(address _spender, uint256 _value) external returns (bool success);

    function allowance(address _owner, address _spender) external view returns (uint256 remaining);

    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}







library Address {
    //insufficient balance
    error InsufficientBalance(uint256 available, uint256 required);
    //unable to send value, recipient may have reverted
    error SendingValueFail();
    //insufficient balance for call
    error InsufficientBalanceForCall(uint256 available, uint256 required);
    //call to non-contract
    error NonContractCall();
    
    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            codehash := extcodehash(account)
        }
        return (codehash != accountHash && codehash != 0x0);
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        uint256 balance = address(this).balance;
        if (balance < amount){
            revert InsufficientBalance(balance, amount);
        }

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{value: amount}("");
        if (!(success)){
            revert SendingValueFail();
        }
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        uint256 balance = address(this).balance;
        if (balance < value){
            revert InsufficientBalanceForCall(balance, value);
        }
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(
        address target,
        bytes memory data,
        uint256 weiValue,
        string memory errorMessage
    ) private returns (bytes memory) {
        if (!(isContract(target))){
            revert NonContractCall();
        }

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{value: weiValue}(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}











library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
     * 0 before setting it to a non-zero value.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}










contract AdminAuth is AuthHelper {
    using SafeERC20 for IERC20;

    AdminVault public constant adminVault = AdminVault(ADMIN_VAULT_ADDR);

    error SenderNotOwner();
    error SenderNotAdmin();

    modifier onlyOwner() {
        if (adminVault.owner() != msg.sender){
            revert SenderNotOwner();
        }
        _;
    }

    modifier onlyAdmin() {
        if (adminVault.admin() != msg.sender){
            revert SenderNotAdmin();
        }
        _;
    }

    /// @notice withdraw stuck funds
    function withdrawStuckFunds(address _token, address _receiver, uint256 _amount) public onlyOwner {
        if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
            payable(_receiver).transfer(_amount);
        } else {
            IERC20(_token).safeTransfer(_receiver, _amount);
        }
    }

    /// @notice Destroy the contract
    /// @dev Deprecated method, selfdestruct will soon just send eth
    function kill() public onlyAdmin {
        selfdestruct(payable(msg.sender));
    }
}







abstract contract IWETH {
    function allowance(address, address) public virtual view returns (uint256);

    function balanceOf(address) public virtual view returns (uint256);

    function approve(address, uint256) public virtual;

    function transfer(address, uint256) public virtual returns (bool);

    function transferFrom(
        address,
        address,
        uint256
    ) public virtual returns (bool);

    function deposit() public payable virtual;

    function withdraw(uint256) public virtual;
}







abstract contract IBotRegistry {
    function botList(address) public virtual view returns (bool);
}







contract MainnetUtilAddresses {
    address internal refillCaller = 0x33fDb79aFB4456B604f376A45A546e7ae700e880;
    address internal feeAddr = 0x76720aC2574631530eC8163e4085d6F98513fb27;

    address internal constant BOT_REGISTRY_ADDRESS = 0x637726f8b08a7ABE3aE3aCaB01A80E2d8ddeF77B;
    address internal constant UNI_V2_ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address internal constant MKR_PROXY_REGISTRY = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4;
    address internal constant AAVE_MARKET = 0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5;
    address internal constant AAVE_V3_MARKET = 0x2f39d218133AFaB8F2B819B1066c7E434Ad94E9e;
    address internal constant SPARK_MARKET = 0x02C3eA4e34C0cBd694D2adFa2c690EECbC1793eE;

    address internal constant DFS_PROXY_REGISTRY_ADDR = 0x29474FdaC7142f9aB7773B8e38264FA15E3805ed;

    address internal constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address internal constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address internal constant WSTETH_ADDR = 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0;
    address internal constant STETH_ADDR = 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84;
    address internal constant WBTC_ADDR = 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;
    address internal constant CHAINLINK_WBTC_ADDR = 0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB;
    address internal constant DAI_ADDR = 0x6B175474E89094C44Da98b954EedeAC495271d0F;

    address internal constant FEE_RECEIVER_ADMIN_ADDR = 0xA74e9791D7D66c6a14B2C571BdA0F2A1f6D64E06;

    address internal constant UNI_V3_ROUTER = 0xE592427A0AEce92De3Edee1F18E0157C05861564;
    address internal constant UNI_V3_QUOTER = 0xb27308f9F90D607463bb33eA1BeBb41C27CE5AB6;

    address internal constant FEE_RECIPIENT = 0x39C4a92Dc506300c3Ea4c67ca4CA611102ee6F2A;

    // not needed on mainnet
    address internal constant DEFAULT_BOT = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    address public constant CHAINLINK_FEED_REGISTRY = 0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf;
}







contract UtilHelper is MainnetUtilAddresses{
}








library TokenUtils {
    using SafeERC20 for IERC20;

    address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    /// @dev Only approves the amount if allowance is lower than amount, does not decrease allowance
    function approveToken(
        address _tokenAddr,
        address _to,
        uint256 _amount
    ) internal {
        if (_tokenAddr == ETH_ADDR) return;

        if (IERC20(_tokenAddr).allowance(address(this), _to) < _amount) {
            IERC20(_tokenAddr).safeApprove(_to, _amount);
        }
    }

    function pullTokensIfNeeded(
        address _token,
        address _from,
        uint256 _amount
    ) internal returns (uint256) {
        // handle max uint amount
        if (_amount == type(uint256).max) {
            _amount = getBalance(_token, _from);
        }

        if (_from != address(0) && _from != address(this) && _token != ETH_ADDR && _amount != 0) {
            IERC20(_token).safeTransferFrom(_from, address(this), _amount);
        }

        return _amount;
    }

    function withdrawTokens(
        address _token,
        address _to,
        uint256 _amount
    ) internal returns (uint256) {
        if (_amount == type(uint256).max) {
            _amount = getBalance(_token, address(this));
        }

        if (_to != address(0) && _to != address(this) && _amount != 0) {
            if (_token != ETH_ADDR) {
                IERC20(_token).safeTransfer(_to, _amount);
            } else {
                (bool success, ) = _to.call{value: _amount}("");
                require(success, "Eth send fail");
            }
        }

        return _amount;
    }

    function depositWeth(uint256 _amount) internal {
        IWETH(WETH_ADDR).deposit{value: _amount}();
    }

    function withdrawWeth(uint256 _amount) internal {
        IWETH(WETH_ADDR).withdraw(_amount);
    }

    function getBalance(address _tokenAddr, address _acc) internal view returns (uint256) {
        if (_tokenAddr == ETH_ADDR) {
            return _acc.balance;
        } else {
            return IERC20(_tokenAddr).balanceOf(_acc);
        }
    }

    function getTokenDecimals(address _token) internal view returns (uint256) {
        if (_token == ETH_ADDR) return 18;

        return IERC20(_token).decimals();
    }
}











contract BotRefills is AdminAuth, UtilHelper {

    using TokenUtils for address;

    error WrongRefillCallerError(address caller);
    error NotAuthBotError(address bot);

    mapping(address => bool) public additionalBots;

    modifier isApprovedBot(address _botAddr) {
        if (!(IBotRegistry(BOT_REGISTRY_ADDRESS).botList(_botAddr) || additionalBots[_botAddr])){
            revert NotAuthBotError(_botAddr);
        }

        _;
    }

    modifier isRefillCaller {
        if (msg.sender != refillCaller){
            revert WrongRefillCallerError(msg.sender);
        }

        _;
    }

    function refill(uint256 _ethAmount, address _botAddress)
        public
        isRefillCaller
        isApprovedBot(_botAddress)
    {
        IERC20(TokenUtils.WETH_ADDR).transferFrom(feeAddr, address(this), _ethAmount);

        TokenUtils.withdrawWeth(_ethAmount);
        payable(_botAddress).transfer(_ethAmount);
    }

    function refillMany(uint256[] memory _ethAmounts, address[] memory _botAddresses) public {
        for(uint i = 0; i < _botAddresses.length; ++i) {
            refill(_ethAmounts[i], _botAddresses[i]);
        }
    }

    ///////////////////////// ONLY OWNER METHODS /////////////////////////

    function setRefillCaller(address _newBot) public onlyOwner {
        refillCaller = _newBot;
    }

    function setFeeAddr(address _newFeeAddr) public onlyOwner {
        feeAddr = _newFeeAddr;
    }

    function setAdditionalBot(address _botAddr, bool _approved) public onlyOwner {
        additionalBots[_botAddr] = _approved;
    }

    // solhint-disable-next-line no-empty-blocks
    receive() external payable {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"NonContractCall","type":"error"},{"inputs":[{"internalType":"address","name":"bot","type":"address"}],"name":"NotAuthBotError","type":"error"},{"inputs":[],"name":"SenderNotAdmin","type":"error"},{"inputs":[],"name":"SenderNotOwner","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"WrongRefillCallerError","type":"error"},{"inputs":[],"name":"CHAINLINK_FEED_REGISTRY","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"additionalBots","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"adminVault","outputs":[{"internalType":"contract AdminVault","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"kill","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_ethAmount","type":"uint256"},{"internalType":"address","name":"_botAddress","type":"address"}],"name":"refill","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"_ethAmounts","type":"uint256[]"},{"internalType":"address[]","name":"_botAddresses","type":"address[]"}],"name":"refillMany","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_botAddr","type":"address"},{"internalType":"bool","name":"_approved","type":"bool"}],"name":"setAdditionalBot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newFeeAddr","type":"address"}],"name":"setFeeAddr","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newBot","type":"address"}],"name":"setRefillCaller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawStuckFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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