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Deposit Buy Dbr ...182322732023-09-28 5:51:23916 days ago1695880283IN
0xae8165f3...3E6499a76
0 ETH0.008436939
Deposit Buy Dbr ...182221392023-09-26 19:49:47918 days ago1695757787IN
0xae8165f3...3E6499a76
0 ETH0.0144942715.45182714
Deposit Buy Dbr ...182211692023-09-26 16:33:47918 days ago1695746027IN
0xae8165f3...3E6499a76
0 ETH0.0204251328
Deposit Buy Dbr ...182206612023-09-26 14:51:23918 days ago1695739883IN
0xae8165f3...3E6499a76
0 ETH0.0218791523.50406222
Deposit Buy Dbr ...182139202023-09-25 16:14:35919 days ago1695658475IN
0xae8165f3...3E6499a76
0 ETH0.0252761525.43233689
Deposit Native E...181256692023-09-13 6:42:35931 days ago1694587355IN
0xae8165f3...3E6499a76
0.5 ETH0.0017308522.14694495
Deposit Native E...180615012023-09-04 7:03:59940 days ago1693811039IN
0xae8165f3...3E6499a76
1.4 ETH0.0008822111.28831095
Deposit Native E...180116462023-08-28 7:26:59947 days ago1693207619IN
0xae8165f3...3E6499a76
1.3 ETH0.0010235213.09647568
Deposit Native E...179752402023-08-23 5:12:11952 days ago1692767531IN
0xae8165f3...3E6499a76
0.7 ETH0.0011299114.45778402
Deposit Native E...179693742023-08-22 9:31:11953 days ago1692696671IN
0xae8165f3...3E6499a76
1.7 ETH0.0019211424.58183274
Deposit Buy Dbr ...179676252023-08-22 3:39:35953 days ago1692675575IN
0xae8165f3...3E6499a76
0 ETH0.0168642715.76938993
Deposit Buy Dbr ...179676192023-08-22 3:38:23953 days ago1692675503IN
0xae8165f3...3E6499a76
0 ETH0.0072503716.00421916
Buy Dbr And Borr...179211412023-08-15 15:29:59960 days ago1692113399IN
0xae8165f3...3E6499a76
0 ETH0.0177490730.70258755
Buy Dbr And Borr...179148352023-08-14 18:19:23961 days ago1692037163IN
0xae8165f3...3E6499a76
0 ETH0.0173725129.5755797
Buy Dbr And Borr...179147092023-08-14 17:54:11961 days ago1692035651IN
0xae8165f3...3E6499a76
0 ETH0.0190559731.2604723
Deposit Native E...179124472023-08-14 10:20:23961 days ago1692008423IN
0xae8165f3...3E6499a76
0.55 ETH0.0010426513.34114504
Sell Dbr Repay A...178437672023-08-04 19:41:35971 days ago1691178095IN
0xae8165f3...3E6499a76
0 ETH0.0106056318.94045734
Buy Dbr And Borr...178346362023-08-03 13:01:59972 days ago1691067719IN
0xae8165f3...3E6499a76
0 ETH0.0149373625.82764273
Deposit Buy Dbr ...178207882023-08-01 14:35:59974 days ago1690900559IN
0xae8165f3...3E6499a76
0 ETH0.0354367840.00951727
Sell Dbr And Rep...178164332023-07-31 23:59:59974 days ago1690847999IN
0xae8165f3...3E6499a76
0 ETH0.0108325922.60430796
Deposit Buy Dbr ...178160572023-07-31 22:44:23974 days ago1690843463IN
0xae8165f3...3E6499a76
0 ETH0.0330989124.87850787
Deposit Buy Dbr ...178144312023-07-31 17:18:11975 days ago1690823891IN
0xae8165f3...3E6499a76
0 ETH0.0470813334.57302433
Deposit Buy Dbr ...178097402023-07-31 1:33:59975 days ago1690767239IN
0xae8165f3...3E6499a76
0 ETH0.0128800214.6798788
Sell Dbr And Rep...178082002023-07-30 20:22:47976 days ago1690748567IN
0xae8165f3...3E6499a76
0 ETH0.0244455751
Deposit Buy Dbr ...177881632023-07-28 1:05:35978 days ago1690506335IN
0xae8165f3...3E6499a76
0 ETH0.014358417.91204745
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Latest 19 internal transactions

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Deposit181256692023-09-13 6:42:35931 days ago1694587355
0xae8165f3...3E6499a76
0.5 ETH
Deposit180615012023-09-04 7:03:59940 days ago1693811039
0xae8165f3...3E6499a76
1.4 ETH
Deposit180116462023-08-28 7:26:59947 days ago1693207619
0xae8165f3...3E6499a76
1.3 ETH
Deposit179752402023-08-23 5:12:11952 days ago1692767531
0xae8165f3...3E6499a76
0.7 ETH
Deposit179693742023-08-22 9:31:11953 days ago1692696671
0xae8165f3...3E6499a76
1.7 ETH
Deposit179124472023-08-14 10:20:23961 days ago1692008423
0xae8165f3...3E6499a76
0.55 ETH
Deposit177713152023-07-25 16:31:11981 days ago1690302671
0xae8165f3...3E6499a76
16 ETH
Transfer176726202023-07-11 20:02:23995 days ago1689105743
0xae8165f3...3E6499a76
16 ETH
Transfer176726202023-07-11 20:02:23995 days ago1689105743
0xae8165f3...3E6499a76
16 ETH
Deposit176658462023-07-10 21:11:59996 days ago1689023519
0xae8165f3...3E6499a76
0.75 ETH
Deposit176645952023-07-10 16:58:47996 days ago1689008327
0xae8165f3...3E6499a76
16 ETH
Deposit173664162023-05-29 18:26:351038 days ago1685384795
0xae8165f3...3E6499a76
15 ETH
Deposit173390312023-05-25 22:09:231041 days ago1685052563
0xae8165f3...3E6499a76
16.5 ETH
Deposit173314122023-05-24 20:26:111043 days ago1684959971
0xae8165f3...3E6499a76
15 ETH
Transfer173107042023-05-21 22:30:471045 days ago1684708247
0xae8165f3...3E6499a76
43.69 ETH
Transfer173107042023-05-21 22:30:471045 days ago1684708247
0xae8165f3...3E6499a76
43.69 ETH
Deposit172465642023-05-12 21:15:591055 days ago1683926159
0xae8165f3...3E6499a76
2.7 ETH
Deposit172424132023-05-12 6:39:591055 days ago1683873599
0xae8165f3...3E6499a76
2.84 ETH
Deposit172422772023-05-12 6:10:591055 days ago1683871859
0xae8165f3...3E6499a76
10 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
CurveHelper

Compiler Version
v0.8.13+commit.abaa5c0e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
pragma solidity ^0.8.13;
import "src/util/OffchainAbstractHelper.sol";

interface ICurvePool {
    function coins(uint index) external view returns(address);
    function get_dy(uint i, uint j, uint dx) external view returns(uint);
    function exchange(uint i, uint j, uint dx, uint min_dy, bool use_eth) external payable returns(uint);
    function exchange(uint i, uint j, uint dx, uint min_dy, bool use_eth, address receiver) external payable returns(uint);
}

contract CurveHelper is OffchainAbstractHelper{

    ICurvePool public immutable curvePool;
    uint dbrIndex;
    uint dolaIndex;

    constructor(address _pool) {
        curvePool = ICurvePool(_pool);
        DOLA.approve(_pool, type(uint).max);
        DBR.approve(_pool, type(uint).max);
        if(ICurvePool(_pool).coins(0) == address(DOLA)){
            dolaIndex = 0;
            dbrIndex = 1;
        } else {
            dolaIndex = 1;
            dbrIndex = 0;
        }
    }

    /**
    @notice Sells an exact amount of DBR for DOLA in a curve pool
    @param amount Amount of DBR to sell
    @param minOut minimum amount of DOLA to receive
    */
    function _sellDbr(uint amount, uint minOut) internal override {
        if(amount > 0){
            curvePool.exchange(dbrIndex, dolaIndex, amount, minOut, false);
        }
    }

    /**
    @notice Buys an exact amount of DBR for DOLA in a curve pool
    @param amount Amount of DOLA to sell
    @param minOut minimum amount of DBR out
    */
    function _buyDbr(uint amount, uint minOut, address receiver) internal override {
        if(amount > 0) {
            curvePool.exchange(dolaIndex, dbrIndex, amount, minOut, false, receiver);
        }
    }
    
    /**
    @notice Approximates the total amount of dola and dbr needed to borrow a dolaBorrowAmount while also borrowing enough to buy the DBR needed to cover for the borrowing period
    @dev Uses a binary search to approximate the amounts needed. Should only be called as part of generating transaction parameters.
    @param dolaBorrowAmount Amount of dola the user wishes to end up with
    @param period Amount of time in seconds the loan will last
    @param iterations Number of approximation iterations. The higher the more precise the result
    */
    function approximateDolaAndDbrNeeded(uint dolaBorrowAmount, uint period, uint iterations) public view override returns(uint dolaForDbr, uint dbrNeeded){
        uint amountIn = dolaBorrowAmount;
        uint stepSize = amountIn / 2;
        uint dbrReceived = curvePool.get_dy(dolaIndex, dbrIndex, amountIn);
        uint dbrToBuy = (amountIn + dolaBorrowAmount) * period / 365 days;
        uint dist = dbrReceived > dbrToBuy ? dbrReceived - dbrToBuy : dbrToBuy - dbrReceived;
        for(uint i; i < iterations; ++i){
            uint newAmountIn = amountIn;
            if(dbrReceived > dbrToBuy){
                newAmountIn -= stepSize;
            } else {
                newAmountIn += stepSize;
            }
            uint newDbrReceived = curvePool.get_dy(dolaIndex, dbrIndex, newAmountIn);
            uint newDbrToBuy = (newAmountIn + dolaBorrowAmount) * period / 365 days;
            uint newDist = newDbrReceived > newDbrToBuy ? newDbrReceived - newDbrToBuy : newDbrToBuy - newDbrReceived;
            if(newDist < dist){
                dbrReceived = newDbrReceived;
                dbrToBuy = newDbrToBuy;
                dist = newDist;
                amountIn = newAmountIn;
            }
            stepSize /= 2;
        }
        return (amountIn, (dolaBorrowAmount + amountIn) * period / 365 days);
    }
}

pragma solidity ^0.8.13;

interface IMarket {
    function borrowOnBehalf(address msgSender, uint dolaAmount, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
    function withdrawOnBehalf(address msgSender, uint amount, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
    function deposit(address msgSender, uint collateralAmount) external;
    function repay(address msgSender, uint amount) external;
    function collateral() external returns(address);
    function debts(address user) external returns(uint);
    function recall(uint amount) external;
    function totalDebt() external view returns (uint);
    function borrowPaused() external view returns (bool);
}

pragma solidity ^0.8.13;
import "../interfaces/IMarket.sol";
interface IERC20 {
    function transfer(address to, uint amount) external;
    function transferFrom(address from, address to, uint amount) external;
    function approve(address to, uint amount) external;
    function balanceOf(address user) external view returns(uint);
}

interface IWETH is IERC20 {
    function withdraw(uint wad) external;
    function deposit() external payable;
}

abstract contract OffchainAbstractHelper {

    IERC20 constant DOLA = IERC20(0x865377367054516e17014CcdED1e7d814EDC9ce4);
    IERC20 constant DBR = IERC20(0xAD038Eb671c44b853887A7E32528FaB35dC5D710);
    IWETH constant WETH = IWETH(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
    
    /**
    Virtual functions implemented by the AMM interfacing part of the Helper contract
    */

    /**
    @notice Buys DBR for an amount of Dola
    @param amount Amount of Dola to spend on DBR
    @param minOut minimum amount of DBR to receive
    */
    function _buyDbr(uint amount, uint minOut, address receiver) internal virtual;

    /**
    @notice Sells an exact amount of DBR for DOLA
    @param amount Amount of DBR to sell
    @param minOut minimum amount of DOLA to receive
    */
    function _sellDbr(uint amount, uint minOut) internal virtual;

    /**
    @notice Approximates the amount of additional DOLA and DBR needed to sustain dolaBorrowAmount over the period
    @dev Larger number of iterations increases both accuracy of the approximation and gas cost. This method should not be called in smart contract code.
    @param dolaBorrowAmount The amount of DOLA the user wishes to borrow before covering DBR expenses
    @param minDbr The amount of seconds the user wish to borrow the DOLA for
    @param iterations The amount of approximation iterations.
    @return Tuple of (dolaNeeded, dbrNeeded) representing the total dola needed to pay for the DBR and pay out dolaBorrowAmount and the dbrNeeded to sustain the loan over the period
    */
    function approximateDolaAndDbrNeeded(uint dolaBorrowAmount, uint minDbr, uint iterations) public view virtual returns(uint, uint);

    /**
    @notice Borrows on behalf of the caller, buying the necessary DBR to pay for the loan over the period, by borrowing aditional funds to pay for the necessary DBR
    @dev Has to borrow the dolaForDbr amount due to how the market's borrowOnBehalf functions, and repay the excess at the end of the call resulting in a weird repay event
    @param market Market the caller wishes to borrow from
    @param dolaAmount Amount the caller wants to end up with at their disposal
    @param dolaForDbr The max amount of debt the caller is willing to end up with
     This is a sensitive parameter and should be reasonably low to prevent sandwhiching.
     A good estimate can be calculated given the approximateDolaAndDbrNeeded function, though should be set slightly higher.
    @param minDbr The minDbr the caller wish to borrow for
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function buyDbrAndBorrowOnBehalf(
        IMarket market, 
        uint dolaAmount,
        uint dolaForDbr,
        uint minDbr,
        uint deadline, 
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        public 
    {
        //Borrow Dola
        uint totalBorrow = dolaAmount + dolaForDbr;
        market.borrowOnBehalf(msg.sender, totalBorrow, deadline, v, r, s);
        
        //Buy DBR
        _buyDbr(dolaForDbr, minDbr, msg.sender);

        //Transfer remaining DOLA amount to user
        DOLA.transfer(msg.sender, dolaAmount);
    }

    /**
    @notice Deposits collateral and borrows on behalf of the caller, buying the necessary DBR to pay for the loan over the period, by borrowing aditional funds to pay for the necessary DBR
    @dev Has to borrow the dolaForDbr amount due to how the market's borrowOnBehalf functions, and repay the excess at the end of the call resulting in a weird repay event
    @param market Market the caller wish to deposit to and borrow from
    @param dolaAmount Amount the caller wants to end up with at their disposal
    @param dolaForDbr The max amount of debt the caller is willing to take on to buy dbr
     This is a sensitive parameter and should be reasonably low to prevent sandwhiching.
     A good estimate can be calculated given the approximateDolaAndDbrNeeded function, though should be set slightly higher.
    @param minDbr The minDbr the caller wish to borrow for
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function depositBuyDbrAndBorrowOnBehalf(
        IMarket market, 
        uint collateralAmount, 
        uint dolaAmount,
        uint dolaForDbr,
        uint minDbr,
        uint deadline, 
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        public 
    {
        IERC20 collateral = IERC20(market.collateral());

        //Deposit collateral
        collateral.transferFrom(msg.sender, address(this), collateralAmount);
        collateral.approve(address(market), collateralAmount);
        market.deposit(msg.sender, collateralAmount);

        //Borrow dola and buy dbr
        buyDbrAndBorrowOnBehalf(market, dolaAmount, dolaForDbr, minDbr, deadline, v, r , s);
    }

    /**
    @notice Deposits native eth as collateral and borrows on behalf of the caller,
    buying the necessary DBR to pay for the loan over the period, by borrowing aditional funds to pay for the necessary DBR
    @dev Has to borrow the dolaForDbr amount due to how the market's borrowOnBehalf functions, and repay the excess at the end of the call resulting in a weird repay event
    @param market Market the caller wish to deposit to and borrow from
    @param dolaAmount Amount the caller wants to end up with at their disposal
    @param dolaForDbr The max amount of debt the caller is willing to end up with
     This is a sensitive parameter and should be reasonably low to prevent sandwhiching.
     A good estimate can be calculated given the approximateDolaAndDbrNeeded function, though should be set slightly higher.
    @param minDbr The minDbr the caller wish to borrow for
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function depositNativeEthBuyDbrAndBorrowOnBehalf(
        IMarket market, 
        uint dolaAmount,
        uint dolaForDbr,
        uint minDbr,
        uint deadline, 
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        public payable
    {
        IERC20 collateral = IERC20(market.collateral());
        require(address(collateral) == address(WETH), "Market is not an ETH market");
        WETH.deposit{value:msg.value}();

        //Deposit collateral
        collateral.approve(address(market), msg.value);
        market.deposit(msg.sender, msg.value);

        //Borrow dola and buy dbr
        buyDbrAndBorrowOnBehalf(market, dolaAmount, dolaForDbr, minDbr, deadline, v, r , s);
    }

    /**
    @notice Sells DBR on behalf of the caller and uses the proceeds along with DOLA from the caller to repay debt.
    @dev The caller is unlikely to spend all of the DOLA they make available for the function call
    @param market The market the user wishes to repay debt in
    @param dolaAmount The maximum amount of dola debt the user is willing to repay
    @param minDolaFromDbr The minimum amount of DOLA the caller expects to get in return for selling their DBR.
     This is a sensitive parameter and should be provided with reasonably low slippage to prevent sandwhiching.
    @param dbrAmountToSell The amount of DBR the caller wishes to sell
    */
    function sellDbrAndRepayOnBehalf(IMarket market, uint dolaAmount, uint minDolaFromDbr, uint dbrAmountToSell) public {
        uint dbrBal = DBR.balanceOf(msg.sender);

        //If user has less DBR than ordered, sell what's available
        if(dbrAmountToSell > dbrBal){
            DBR.transferFrom(msg.sender, address(this), dbrBal);
            _sellDbr(dbrBal, minDolaFromDbr);
        } else {
            DBR.transferFrom(msg.sender, address(this), dbrAmountToSell);
            _sellDbr(dbrAmountToSell, minDolaFromDbr);
        }

        uint debt = market.debts(msg.sender);
        uint dolaBal = DOLA.balanceOf(address(this));
        
        //If the debt is lower than the dolaAmount, repay debt else repay dolaAmount
        uint repayAmount = debt < dolaAmount ? debt : dolaAmount;

        //If dolaBal is less than repayAmount, transfer remaining DOLA from user, otherwise transfer excess dola to user
        if(dolaBal < repayAmount){
            DOLA.transferFrom(msg.sender, address(this), repayAmount - dolaBal);
        } else {
            DOLA.transfer(msg.sender, dolaBal - repayAmount);
        }

        //Repay repayAmount
        DOLA.approve(address(market), repayAmount);
        market.repay(msg.sender, repayAmount);
    }

    /**
    @notice Sells DBR on behalf of the caller and uses the proceeds along with DOLA from the caller to repay debt, and then withdraws collateral
    @dev The caller is unlikely to spend all of the DOLA they make available for the function call
    @param market Market the user wishes to repay debt in
    @param dolaAmount Maximum amount of dola debt the user is willing to repay
    @param minDolaFromDbr Minimum amount of DOLA the caller expects to get in return for selling their DBR
     This is a sensitive parameter and should be provided with reasonably low slippage to prevent sandwhiching.
    @param dbrAmountToSell Amount of DBR the caller wishes to sell
    @param collateralAmount Amount of collateral to withdraw
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function sellDbrRepayAndWithdrawOnBehalf(
        IMarket market, 
        uint dolaAmount, 
        uint minDolaFromDbr,
        uint dbrAmountToSell, 
        uint collateralAmount, 
        uint deadline, 
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        external 
    {
        //Repay
        sellDbrAndRepayOnBehalf(market, dolaAmount, minDolaFromDbr, dbrAmountToSell);

        //Withdraw
        market.withdrawOnBehalf(msg.sender, collateralAmount, deadline, v, r, s);

        //Transfer collateral to msg.sender
        IERC20(market.collateral()).transfer(msg.sender, collateralAmount);
    }

    /**
    @notice Sells DBR on behalf of the caller and uses the proceeds along with DOLA from the caller to repay debt, and then withdraws collateral
    @dev The caller is unlikely to spend all of the DOLA they make available for the function call
    @param market Market the user wishes to repay debt in
    @param dolaAmount Maximum amount of dola debt the user is willing to repay
    @param minDolaFromDbr Minimum amount of DOLA the caller expects to get in return for selling their DBR
     This is a sensitive parameter and should be provided with reasonably low slippage to prevent sandwhiching.
    @param dbrAmountToSell Amount of DBR the caller wishes to sell
    @param collateralAmount Amount of collateral to withdraw
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function sellDbrRepayAndWithdrawNativeEthOnBehalf(
        IMarket market, 
        uint dolaAmount, 
        uint minDolaFromDbr,
        uint dbrAmountToSell, 
        uint collateralAmount, 
        uint deadline, 
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        external 
    {
        //Repay
        sellDbrAndRepayOnBehalf(market, dolaAmount, minDolaFromDbr, dbrAmountToSell);

        //Withdraw
        withdrawNativeEthOnBehalf(market, collateralAmount, deadline, v, r, s);
    }

    /**
    @notice Repays debt, and then withdraws native ETH
    @dev The caller is unlikely to spend all of the DOLA they make available for the function call
    @param market Market the user wishes to repay debt in
    @param dolaAmount Amount of dola debt the user is willing to repay    
    @param collateralAmount Amount of collateral to withdraw
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function repayAndWithdrawNativeEthOnBehalf(
        IMarket market, 
        uint dolaAmount,                 
        uint collateralAmount, 
        uint deadline,
        uint8 v, 
        bytes32 r, 
        bytes32 s) 
        external 
    {        
        // Repay
        DOLA.transferFrom(msg.sender, address(this), dolaAmount);        
        DOLA.approve(address(market), dolaAmount);
        market.repay(msg.sender, dolaAmount);

        // Withdraw
        withdrawNativeEthOnBehalf(market, collateralAmount, deadline, v, r, s);
    }

    /**
    @notice Helper function for depositing native eth to WETH markets
    @param market The WETH market to deposit to
    */
    function depositNativeEthOnBehalf(IMarket market) public payable {
        require(address(market.collateral()) == address(WETH), "Not an ETH market");
        WETH.deposit{value:msg.value}();
        WETH.approve(address(market), msg.value);
        market.deposit(msg.sender, msg.value);
    }

    /**
    @notice Helper function for depositing native eth to WETH markets before borrowing on behalf of the depositor
    @param market The WETH market to deposit to
    @param borrowAmount The amount to borrow on behalf of the depositor
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function depositNativeEthAndBorrowOnBehalf(IMarket market, uint borrowAmount, uint deadline, uint8 v, bytes32 r, bytes32 s) public payable {
        require(address(market.collateral()) == address(WETH), "Not an ETH market");

        //Deposit native eth
        WETH.deposit{value:msg.value}();
        WETH.approve(address(market), msg.value);
        market.deposit(msg.sender, msg.value);

        //Borrow Dola
        market.borrowOnBehalf(msg.sender, borrowAmount, deadline, v, r, s);
        DOLA.transfer(msg.sender, borrowAmount);
    }

    /**
    @notice Helper function for withdrawing to native eth
    @param market WETH market to withdraw collateral from
    @param collateralAmount Amount of collateral to withdraw
    @param deadline Deadline of the signature
    @param v V parameter of the signature
    @param r R parameter of the signature
    @param s S parameter of the signature
    */
    function withdrawNativeEthOnBehalf(
        IMarket market,
        uint collateralAmount,
        uint deadline,
        uint8 v,
        bytes32 r,
        bytes32 s)
        public
    {
        market.withdrawOnBehalf(msg.sender, collateralAmount, deadline, v, r, s);

        IERC20 collateral = IERC20(market.collateral());
        require(address(collateral) == address(WETH), "Not an ETH market");
        WETH.withdraw(collateralAmount);

        (bool success,) = payable(msg.sender).call{value:collateralAmount}("");
        require(success, "Failed to transfer ETH");
    }
    
    //Empty receive function for receiving the native eth sent by the WETH contract
    receive() external payable {}
}

Settings
{
  "remappings": [
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "solmate/=lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_pool","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"dolaBorrowAmount","type":"uint256"},{"internalType":"uint256","name":"period","type":"uint256"},{"internalType":"uint256","name":"iterations","type":"uint256"}],"name":"approximateDolaAndDbrNeeded","outputs":[{"internalType":"uint256","name":"dolaForDbr","type":"uint256"},{"internalType":"uint256","name":"dbrNeeded","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"dolaForDbr","type":"uint256"},{"internalType":"uint256","name":"minDbr","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"buyDbrAndBorrowOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"curvePool","outputs":[{"internalType":"contract ICurvePool","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"dolaForDbr","type":"uint256"},{"internalType":"uint256","name":"minDbr","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"depositBuyDbrAndBorrowOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"borrowAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"depositNativeEthAndBorrowOnBehalf","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"dolaForDbr","type":"uint256"},{"internalType":"uint256","name":"minDbr","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"depositNativeEthBuyDbrAndBorrowOnBehalf","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"}],"name":"depositNativeEthOnBehalf","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"repayAndWithdrawNativeEthOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"minDolaFromDbr","type":"uint256"},{"internalType":"uint256","name":"dbrAmountToSell","type":"uint256"}],"name":"sellDbrAndRepayOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"minDolaFromDbr","type":"uint256"},{"internalType":"uint256","name":"dbrAmountToSell","type":"uint256"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"sellDbrRepayAndWithdrawNativeEthOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"dolaAmount","type":"uint256"},{"internalType":"uint256","name":"minDolaFromDbr","type":"uint256"},{"internalType":"uint256","name":"dbrAmountToSell","type":"uint256"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"sellDbrRepayAndWithdrawOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IMarket","name":"market","type":"address"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"withdrawNativeEthOnBehalf","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000056ef502c1fc5335172bc95ec4cae16c2eb9b5b6

-----Decoded View---------------
Arg [0] : _pool (address): 0x056ef502C1Fc5335172bc95EC4cAE16C2eB9b5b6

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000056ef502c1fc5335172bc95ec4cae16c2eb9b5b6


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.