Contract 0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x31bf1ad7e822dadec5ec31ed7e71f150e154d94f6998adfc29bdf5c2a3f19385Claim Reward750983492022-09-28 14:43:281 hr 17 mins ago0x580f710e8c2bf2909e9785a12e8ce96aca310b6c IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002300893
0x7915eddb667b9eccd3eb99e058230bb4a5292ee4bce709891421fa9769e76a2dClaim Reward750983282022-09-28 14:43:041 hr 17 mins ago0x580f710e8c2bf2909e9785a12e8ce96aca310b6c IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002648975
0x2e56f2c175d0eff44c168e15f7646d182076165f61cdbba5371005161ad1a96bClaim Reward750961712022-09-28 13:59:152 hrs 1 min ago0x664553fc89ccc001496b99fca91addcbe97ca464 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002285129
0x5fc3a3d807a683efd11a560a66a94def8960e7de7d6841d5b6a768aec4b191daClaim Reward750961502022-09-28 13:58:502 hrs 1 min ago0x664553fc89ccc001496b99fca91addcbe97ca464 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002393846
0xdbde72e03aaf8e38511e0f3580bea768c881e7a82a23e9e2423a990a75dece02Claim Reward750900762022-09-28 11:56:164 hrs 4 mins ago0x7a276f09b6fd7e29c9cf694bc3c92284342d6685 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002285129
0xb0fddf6f7c1f8c014489bc5afb09adda8723c374555ff3a727ec3cc641fe6165Claim Reward750899982022-09-28 11:54:464 hrs 5 mins ago0x7a276f09b6fd7e29c9cf694bc3c92284342d6685 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002393846
0x46eb1662be2e02e36e55faa7f15092b40bc47c5f1136d155009117fa331251e2Claim Reward750709912022-09-28 5:42:1810 hrs 18 mins ago0x1f616ac8784b00ee3e45077e7556c8a66d0fe409 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002420509
0xf22fed4a9176c12271eec515f662c9738696eaf5506fdda2d2966bc6f582d37eClaim Reward750699692022-09-28 5:22:1010 hrs 38 mins ago0x318f6277e7ec3ce9f9f1cb655fef873b930b61f5 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002300893
0x5181c7d13db58c7fc12e0e36b6ba0262dd5565f46feaf72ad8fff9e0090ab6dfClaim Reward750666252022-09-28 4:16:4611 hrs 43 mins ago0xc450b1401d9eacead337398b43568b04da233405 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002393846
0x604ca882aec31cfe0e0431b803a4417d9b1f136b3049b98b8bf475b907a97884Claim Reward750665282022-09-28 4:14:5411 hrs 45 mins ago0x1c99fc3765576f5a6a55d53ae41b96cb971a9425 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0xe25282267161a7c145ae89303071b43c60af236a23536bac79eb991ae3238e61Claim Reward750447442022-09-27 21:10:1818 hrs 50 mins ago0x1457ea57880ce1c2977c68c3af2c1729328e8d5d IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0xac67d03bd1a6d163fb64a8488835a0a92169789b7be29be992bf53596d2c473bClaim Reward750361122022-09-27 18:18:3321 hrs 41 mins ago0x76e1b56058861b02556e134c2f3ebc88b42081a2 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002409169
0xe387bafa0998c6af14fa945aac298dafe9974436c2b3b8d87748e094e104255bClaim Reward750351282022-09-27 17:58:5022 hrs 1 min ago0xc450b1401d9eacead337398b43568b04da233405 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002409169
0xebb9c51a25b7f400a710abd7fabc1e4a3690a3e927bcc66fd2de1a74a35d15acClaim Reward750243312022-09-27 14:23:371 day 1 hr ago0x5c002c480fd11b309b6dd3c0c827a3c8c75f2360 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0xe0469143305ebe6d5c7ddeb2070afafa286d0a719a9813cecb014c400e6d4a8fClaim Reward750225282022-09-27 13:47:021 day 2 hrs ago0x5e98dea4eb32ac1dac6deb60d5359d7dff1c8f7c IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002768675
0x8311f93bbcd7eb86c3baa91294e168f9ad92f567c007164bc5ccefab61a0ae05Claim Reward750225242022-09-27 13:46:581 day 2 hrs ago0xc450b1401d9eacead337398b43568b04da233405 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002409169
0xc3419ef21ddbc8a2d106ab6d3a171a4b7b7767f88f37648ea7c09cfe620cd296Claim Reward750218082022-09-27 13:32:381 day 2 hrs ago0x5da68351bd082abda73e42ac981db51d9364fe69 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002300893
0x9989eac027f6059eae9646ce7b64add862a79b5c4866c646f6d29e8acc343a87Claim Reward750189882022-09-27 12:35:301 day 3 hrs ago0x064e023d0084c3fe1ef1016693939f34eec01aa1 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0.00002753268
0xccad3d19346db345a7a43875bd87f19ff4cb2054d5cb5084565f5afb8816cc45Claim Reward750133682022-09-27 10:41:181 day 5 hrs ago0xa165457f732575f55e65538b8eba05c48ebba8c1 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0xaabc3faa85c6e99b10bd8a46ef693e27f69915058ff1c9ab9f4f53a8dcfd80b7Claim Reward750133342022-09-27 10:40:371 day 5 hrs ago0xa165457f732575f55e65538b8eba05c48ebba8c1 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0x583d2dd4fc339ac432b3edeebbdb50f4c336a8aa145dd3c2de9427dfd341e5c5Claim Reward750059272022-09-27 8:11:541 day 7 hrs ago0xe972f42222435f40c616580d7dcd56ba6d3a35d2 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0x1e66363f9bed0109fe67c021a3f1e71bcb2e6099192c30b58b7bc96a0bfd000fClaim Reward750057722022-09-27 8:08:481 day 7 hrs ago0xe972f42222435f40c616580d7dcd56ba6d3a35d2 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0x27381a345b5258dda7d4302fdc5d5c8fb9a5370cd5045a3eb769c15109bd0114Claim Reward750047442022-09-27 7:48:331 day 8 hrs ago0x7c7cb0e291aa6abdc23dc0961da2f3b9e4d4aeda IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0x5d9d30debcacea48fb1f09c5a0699b47844389ae4ee9c2dcbaba2913dc5a2a6dClaim Reward750047272022-09-27 7:48:131 day 8 hrs ago0x7c7cb0e291aa6abdc23dc0961da2f3b9e4d4aeda IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
0x3d609d5404541e76189dc72aacb5c854974f74dfb9dbce311104240569837f93Claim Reward750009712022-09-27 6:34:561 day 9 hrs ago0x516341bc46a96c3c76ce31778535deb78a046c99 IN  0xf9c3a8cf63154a5bd1a87b6f49575d47b7f713bd0 ETH0
[ Download CSV Export 
Parent Txn Hash Block From To Value
Loading

Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x98E8d4b4F53FA2a2d1b9C651AF919Fc839eE4c1a

Contract Name:
RewardDistributor

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Unlicense license

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 15 : CToken.sol
pragma solidity ^0.5.16;

import "./ComptrollerInterface.sol";
import "./CTokenInterfaces.sol";
import "./ErrorReporter.sol";
import "./Exponential.sol";
import "./EIP20Interface.sol";
import "./InterestRateModel.sol";

/**
 * @title Compound's CToken Contract
 * @notice Abstract base for CTokens
 * @author Compound
 */
contract CToken is CTokenInterface, Exponential, TokenErrorReporter {
    /**
     * @notice Initialize the money market
     * @param comptroller_ The address of the Comptroller
     * @param interestRateModel_ The address of the interest rate model
     * @param initialExchangeRateMantissa_ The initial exchange rate, scaled by 1e18
     * @param name_ EIP-20 name of this token
     * @param symbol_ EIP-20 symbol of this token
     * @param decimals_ EIP-20 decimal precision of this token
     */
    function initialize(ComptrollerInterface comptroller_,
                        InterestRateModel interestRateModel_,
                        uint initialExchangeRateMantissa_,
                        string memory name_,
                        string memory symbol_,
                        uint8 decimals_) public {
        require(msg.sender == admin, "only admin may initialize the market");
        require(accrualBlockTimestamp == 0 && borrowIndex == 0, "market may only be initialized once");

        // Set initial exchange rate
        initialExchangeRateMantissa = initialExchangeRateMantissa_;
        require(initialExchangeRateMantissa > 0, "initial exchange rate must be greater than zero.");

        // Set the comptroller
        uint err = _setComptroller(comptroller_);
        require(err == uint(Error.NO_ERROR), "setting comptroller failed");

        // Initialize block number and borrow index (block number mocks depend on comptroller being set)
        accrualBlockTimestamp = getBlockTimestamp();
        borrowIndex = mantissaOne;

        // Set the interest rate model (depends on block number / borrow index)
        err = _setInterestRateModelFresh(interestRateModel_);
        require(err == uint(Error.NO_ERROR), "setting interest rate model failed");

        name = name_;
        symbol = symbol_;
        decimals = decimals_;

        // The counter starts true to prevent changing it from zero to non-zero (i.e. smaller cost/refund)
        _notEntered = true;
    }

    /**
     * @notice Transfer `tokens` tokens from `src` to `dst` by `spender`
     * @dev Called by both `transfer` and `transferFrom` internally
     * @param spender The address of the account performing the transfer
     * @param src The address of the source account
     * @param dst The address of the destination account
     * @param tokens The number of tokens to transfer
     * @return Whether or not the transfer succeeded
     */
    function transferTokens(address spender, address src, address dst, uint tokens) internal returns (uint) {
        /* Fail if transfer not allowed */
        uint allowed = comptroller.transferAllowed(address(this), src, dst, tokens);
        if (allowed != 0) {
            return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.TRANSFER_COMPTROLLER_REJECTION, allowed);
        }

        /* Do not allow self-transfers */
        if (src == dst) {
            return fail(Error.BAD_INPUT, FailureInfo.TRANSFER_NOT_ALLOWED);
        }

        /* Get the allowance, infinite for the account owner */
        uint startingAllowance = 0;
        if (spender == src) {
            startingAllowance = uint(-1);
        } else {
            startingAllowance = transferAllowances[src][spender];
        }

        /* Do the calculations, checking for {under,over}flow */
        MathError mathErr;
        uint allowanceNew;
        uint srcTokensNew;
        uint dstTokensNew;

        (mathErr, allowanceNew) = subUInt(startingAllowance, tokens);
        if (mathErr != MathError.NO_ERROR) {
            return fail(Error.MATH_ERROR, FailureInfo.TRANSFER_NOT_ALLOWED);
        }

        (mathErr, srcTokensNew) = subUInt(accountTokens[src], tokens);
        if (mathErr != MathError.NO_ERROR) {
            return fail(Error.MATH_ERROR, FailureInfo.TRANSFER_NOT_ENOUGH);
        }

        (mathErr, dstTokensNew) = addUInt(accountTokens[dst], tokens);
        if (mathErr != MathError.NO_ERROR) {
            return fail(Error.MATH_ERROR, FailureInfo.TRANSFER_TOO_MUCH);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        accountTokens[src] = srcTokensNew;
        accountTokens[dst] = dstTokensNew;

        /* Eat some of the allowance (if necessary) */
        if (startingAllowance != uint(-1)) {
            transferAllowances[src][spender] = allowanceNew;
        }

        /* We emit a Transfer event */
        emit Transfer(src, dst, tokens);

        // unused function
        // comptroller.transferVerify(address(this), src, dst, tokens);

        return uint(Error.NO_ERROR);
    }

    /**
     * @notice Transfer `amount` tokens from `msg.sender` to `dst`
     * @param dst The address of the destination account
     * @param amount The number of tokens to transfer
     * @return Whether or not the transfer succeeded
     */
    function transfer(address dst, uint256 amount) external nonReentrant returns (bool) {
        return transferTokens(msg.sender, msg.sender, dst, amount) == uint(Error.NO_ERROR);
    }

    /**
     * @notice Transfer `amount` tokens from `src` to `dst`
     * @param src The address of the source account
     * @param dst The address of the destination account
     * @param amount The number of tokens to transfer
     * @return Whether or not the transfer succeeded
     */
    function transferFrom(address src, address dst, uint256 amount) external nonReentrant returns (bool) {
        return transferTokens(msg.sender, src, dst, amount) == uint(Error.NO_ERROR);
    }

    /**
     * @notice Approve `spender` to transfer up to `amount` from `src`
     * @dev This will overwrite the approval amount for `spender`
     *  and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
     * @param spender The address of the account which may transfer tokens
     * @param amount The number of tokens that are approved (-1 means infinite)
     * @return Whether or not the approval succeeded
     */
    function approve(address spender, uint256 amount) external returns (bool) {
        address src = msg.sender;
        transferAllowances[src][spender] = amount;
        emit Approval(src, spender, amount);
        return true;
    }

    /**
     * @notice Get the current allowance from `owner` for `spender`
     * @param owner The address of the account which owns the tokens to be spent
     * @param spender The address of the account which may transfer tokens
     * @return The number of tokens allowed to be spent (-1 means infinite)
     */
    function allowance(address owner, address spender) external view returns (uint256) {
        return transferAllowances[owner][spender];
    }

    /**
     * @notice Get the token balance of the `owner`
     * @param owner The address of the account to query
     * @return The number of tokens owned by `owner`
     */
    function balanceOf(address owner) external view returns (uint256) {
        return accountTokens[owner];
    }

    /**
     * @notice Get the underlying balance of the `owner`
     * @dev This also accrues interest in a transaction
     * @param owner The address of the account to query
     * @return The amount of underlying owned by `owner`
     */
    function balanceOfUnderlying(address owner) external returns (uint) {
        Exp memory exchangeRate = Exp({mantissa: exchangeRateCurrent()});
        (MathError mErr, uint balance) = mulScalarTruncate(exchangeRate, accountTokens[owner]);
        require(mErr == MathError.NO_ERROR, "balance could not be calculated");
        return balance;
    }

    /**
     * @notice Get a snapshot of the account's balances, and the cached exchange rate
     * @dev This is used by comptroller to more efficiently perform liquidity checks.
     * @param account Address of the account to snapshot
     * @return (possible error, token balance, borrow balance, exchange rate mantissa)
     */
    function getAccountSnapshot(address account) external view returns (uint, uint, uint, uint) {
        uint cTokenBalance = accountTokens[account];
        uint borrowBalance;
        uint exchangeRateMantissa;

        MathError mErr;

        (mErr, borrowBalance) = borrowBalanceStoredInternal(account);
        if (mErr != MathError.NO_ERROR) {
            return (uint(Error.MATH_ERROR), 0, 0, 0);
        }

        (mErr, exchangeRateMantissa) = exchangeRateStoredInternal();
        if (mErr != MathError.NO_ERROR) {
            return (uint(Error.MATH_ERROR), 0, 0, 0);
        }

        return (uint(Error.NO_ERROR), cTokenBalance, borrowBalance, exchangeRateMantissa);
    }

    /**
     * @dev Function to simply retrieve block number
     *  This exists mainly for inheriting test contracts to stub this result.
     */
    function getBlockTimestamp() internal view returns (uint) {
        return block.timestamp;
    }

    /**
     * @notice Returns the current per-block borrow interest rate for this cToken
     * @return The borrow interest rate per block, scaled by 1e18
     */
    function borrowRatePerBlock() external view returns (uint) {
        return interestRateModel.getBorrowRate(getCashPrior(), totalBorrows, totalReserves);
    }

    /**
     * @notice Returns the current per-block supply interest rate for this cToken
     * @return The supply interest rate per block, scaled by 1e18
     */
    function supplyRatePerBlock() external view returns (uint) {
        return interestRateModel.getSupplyRate(getCashPrior(), totalBorrows, totalReserves, reserveFactorMantissa);
    }

    /**
     * @notice Returns the current total borrows plus accrued interest
     * @return The total borrows with interest
     */
    function totalBorrowsCurrent() external nonReentrant returns (uint) {
        require(accrueInterest() == uint(Error.NO_ERROR), "accrue interest failed");
        return totalBorrows;
    }

    /**
     * @notice Accrue interest to updated borrowIndex and then calculate account's borrow balance using the updated borrowIndex
     * @param account The address whose balance should be calculated after updating borrowIndex
     * @return The calculated balance
     */
    function borrowBalanceCurrent(address account) external nonReentrant returns (uint) {
        require(accrueInterest() == uint(Error.NO_ERROR), "accrue interest failed");
        return borrowBalanceStored(account);
    }

    /**
     * @notice Return the borrow balance of account based on stored data
     * @param account The address whose balance should be calculated
     * @return The calculated balance
     */
    function borrowBalanceStored(address account) public view returns (uint) {
        (MathError err, uint result) = borrowBalanceStoredInternal(account);
        require(err == MathError.NO_ERROR, "borrowBalanceStored: borrowBalanceStoredInternal failed");
        return result;
    }

    /**
     * @notice Return the borrow balance of account based on stored data
     * @param account The address whose balance should be calculated
     * @return (error code, the calculated balance or 0 if error code is non-zero)
     */
    function borrowBalanceStoredInternal(address account) internal view returns (MathError, uint) {
        /* Note: we do not assert that the market is up to date */
        MathError mathErr;
        uint principalTimesIndex;
        uint result;

        /* Get borrowBalance and borrowIndex */
        BorrowSnapshot storage borrowSnapshot = accountBorrows[account];

        /* If borrowBalance = 0 then borrowIndex is likely also 0.
         * Rather than failing the calculation with a division by 0, we immediately return 0 in this case.
         */
        if (borrowSnapshot.principal == 0) {
            return (MathError.NO_ERROR, 0);
        }

        /* Calculate new borrow balance using the interest index:
         *  recentBorrowBalance = borrower.borrowBalance * market.borrowIndex / borrower.borrowIndex
         */
        (mathErr, principalTimesIndex) = mulUInt(borrowSnapshot.principal, borrowIndex);
        if (mathErr != MathError.NO_ERROR) {
            return (mathErr, 0);
        }

        (mathErr, result) = divUInt(principalTimesIndex, borrowSnapshot.interestIndex);
        if (mathErr != MathError.NO_ERROR) {
            return (mathErr, 0);
        }

        return (MathError.NO_ERROR, result);
    }

    /**
     * @notice Accrue interest then return the up-to-date exchange rate
     * @return Calculated exchange rate scaled by 1e18
     */
    function exchangeRateCurrent() public nonReentrant returns (uint) {
        require(accrueInterest() == uint(Error.NO_ERROR), "accrue interest failed");
        return exchangeRateStored();
    }

    /**
     * @notice Calculates the exchange rate from the underlying to the CToken
     * @dev This function does not accrue interest before calculating the exchange rate
     * @return Calculated exchange rate scaled by 1e18
     */
    function exchangeRateStored() public view returns (uint) {
        (MathError err, uint result) = exchangeRateStoredInternal();
        require(err == MathError.NO_ERROR, "exchangeRateStored: exchangeRateStoredInternal failed");
        return result;
    }

    /**
     * @notice Calculates the exchange rate from the underlying to the CToken
     * @dev This function does not accrue interest before calculating the exchange rate
     * @return (error code, calculated exchange rate scaled by 1e18)
     */
    function exchangeRateStoredInternal() internal view returns (MathError, uint) {
        uint _totalSupply = totalSupply;
        if (_totalSupply == 0) {
            /*
             * If there are no tokens minted:
             *  exchangeRate = initialExchangeRate
             */
            return (MathError.NO_ERROR, initialExchangeRateMantissa);
        } else {
            /*
             * Otherwise:
             *  exchangeRate = (totalCash + totalBorrows - totalReserves) / totalSupply
             */
            uint totalCash = getCashPrior();
            uint cashPlusBorrowsMinusReserves;
            Exp memory exchangeRate;
            MathError mathErr;

            (mathErr, cashPlusBorrowsMinusReserves) = addThenSubUInt(totalCash, totalBorrows, totalReserves);
            if (mathErr != MathError.NO_ERROR) {
                return (mathErr, 0);
            }

            (mathErr, exchangeRate) = getExp(cashPlusBorrowsMinusReserves, _totalSupply);
            if (mathErr != MathError.NO_ERROR) {
                return (mathErr, 0);
            }

            return (MathError.NO_ERROR, exchangeRate.mantissa);
        }
    }

    /**
     * @notice Get cash balance of this cToken in the underlying asset
     * @return The quantity of underlying asset owned by this contract
     */
    function getCash() external view returns (uint) {
        return getCashPrior();
    }

    /**
     * @notice Applies accrued interest to total borrows and reserves
     * @dev This calculates interest accrued from the last checkpointed block
     *   up to the current block and writes new checkpoint to storage.
     */
    function accrueInterest() public returns (uint) {
        /* Remember the initial block number */
        uint currentBlockTimestamp = getBlockTimestamp();
        uint accrualBlockTimestampPrior = accrualBlockTimestamp;

        /* Short-circuit accumulating 0 interest */
        if (accrualBlockTimestampPrior == currentBlockTimestamp) {
            return uint(Error.NO_ERROR);
        }

        /* Read the previous values out of storage */
        uint cashPrior = getCashPrior();
        uint borrowsPrior = totalBorrows;
        uint reservesPrior = totalReserves;
        uint borrowIndexPrior = borrowIndex;

        /* Calculate the current borrow interest rate */
        uint borrowRateMantissa = interestRateModel.getBorrowRate(cashPrior, borrowsPrior, reservesPrior);
        require(borrowRateMantissa <= borrowRateMaxMantissa, "borrow rate is absurdly high");

        /* Calculate the Timestamp of blocks elapsed since the last accrual */
        (MathError mathErr, uint blockDelta) = subUInt(currentBlockTimestamp, accrualBlockTimestampPrior);
        require(mathErr == MathError.NO_ERROR, "could not calculate block delta");

        /*
         * Calculate the interest accumulated into borrows and reserves and the new index:
         *  simpleInterestFactor = borrowRate * blockDelta
         *  interestAccumulated = simpleInterestFactor * totalBorrows
         *  totalBorrowsNew = interestAccumulated + totalBorrows
         *  totalReservesNew = interestAccumulated * reserveFactor + totalReserves
         *  borrowIndexNew = simpleInterestFactor * borrowIndex + borrowIndex
         */

        Exp memory simpleInterestFactor;
        uint interestAccumulated;
        uint totalBorrowsNew;
        uint totalReservesNew;
        uint borrowIndexNew;

        (mathErr, simpleInterestFactor) = mulScalar(Exp({mantissa: borrowRateMantissa}), blockDelta);
        if (mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_SIMPLE_INTEREST_FACTOR_CALCULATION_FAILED, uint(mathErr));
        }

        (mathErr, interestAccumulated) = mulScalarTruncate(simpleInterestFactor, borrowsPrior);
        if (mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_ACCUMULATED_INTEREST_CALCULATION_FAILED, uint(mathErr));
        }

        (mathErr, totalBorrowsNew) = addUInt(interestAccumulated, borrowsPrior);
        if (mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_NEW_TOTAL_BORROWS_CALCULATION_FAILED, uint(mathErr));
        }

        (mathErr, totalReservesNew) = mulScalarTruncateAddUInt(Exp({mantissa: reserveFactorMantissa}), interestAccumulated, reservesPrior);
        if (mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_NEW_TOTAL_RESERVES_CALCULATION_FAILED, uint(mathErr));
        }

        (mathErr, borrowIndexNew) = mulScalarTruncateAddUInt(simpleInterestFactor, borrowIndexPrior, borrowIndexPrior);
        if (mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_NEW_BORROW_INDEX_CALCULATION_FAILED, uint(mathErr));
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /* We write the previously calculated values into storage */
        accrualBlockTimestamp = currentBlockTimestamp;
        borrowIndex = borrowIndexNew;
        totalBorrows = totalBorrowsNew;
        totalReserves = totalReservesNew;

        /* We emit an AccrueInterest event */
        emit AccrueInterest(cashPrior, interestAccumulated, borrowIndexNew, totalBorrowsNew);

        return uint(Error.NO_ERROR);
    }

    /**
     * @notice Sender supplies assets into the market and receives cTokens in exchange
     * @dev Accrues interest whether or not the operation succeeds, unless reverted
     * @param mintAmount The amount of the underlying asset to supply
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual mint amount.
     */
    function mintInternal(uint mintAmount) internal nonReentrant returns (uint, uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted borrow failed
            return (fail(Error(error), FailureInfo.MINT_ACCRUE_INTEREST_FAILED), 0);
        }
        // mintFresh emits the actual Mint event if successful and logs on errors, so we don't need to
        return mintFresh(msg.sender, mintAmount);
    }

    struct MintLocalVars {
        Error err;
        MathError mathErr;
        uint exchangeRateMantissa;
        uint mintTokens;
        uint totalSupplyNew;
        uint accountTokensNew;
        uint actualMintAmount;
    }

    /**
     * @notice User supplies assets into the market and receives cTokens in exchange
     * @dev Assumes interest has already been accrued up to the current block
     * @param minter The address of the account which is supplying the assets
     * @param mintAmount The amount of the underlying asset to supply
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual mint amount.
     */
    function mintFresh(address minter, uint mintAmount) internal returns (uint, uint) {
        /* Fail if mint not allowed */
        uint allowed = comptroller.mintAllowed(address(this), minter, mintAmount);
        if (allowed != 0) {
            return (failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.MINT_COMPTROLLER_REJECTION, allowed), 0);
        }

        /* Verify market's block number equals current block number */
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return (fail(Error.MARKET_NOT_FRESH, FailureInfo.MINT_FRESHNESS_CHECK), 0);
        }

        MintLocalVars memory vars;

        (vars.mathErr, vars.exchangeRateMantissa) = exchangeRateStoredInternal();
        if (vars.mathErr != MathError.NO_ERROR) {
            return (failOpaque(Error.MATH_ERROR, FailureInfo.MINT_EXCHANGE_RATE_READ_FAILED, uint(vars.mathErr)), 0);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /*
         *  We call `doTransferIn` for the minter and the mintAmount.
         *  Note: The cToken must handle variations between ERC-20 and ETH underlying.
         *  `doTransferIn` reverts if anything goes wrong, since we can't be sure if
         *  side-effects occurred. The function returns the amount actually transferred,
         *  in case of a fee. On success, the cToken holds an additional `actualMintAmount`
         *  of cash.
         */
        vars.actualMintAmount = doTransferIn(minter, mintAmount);

        /*
         * We get the current exchange rate and calculate the number of cTokens to be minted:
         *  mintTokens = actualMintAmount / exchangeRate
         */

        (vars.mathErr, vars.mintTokens) = divScalarByExpTruncate(vars.actualMintAmount, Exp({mantissa: vars.exchangeRateMantissa}));
        require(vars.mathErr == MathError.NO_ERROR, "MINT_EXCHANGE_CALCULATION_FAILED");

        /*
         * We calculate the new total supply of cTokens and minter token balance, checking for overflow:
         *  totalSupplyNew = totalSupply + mintTokens
         *  accountTokensNew = accountTokens[minter] + mintTokens
         */
        (vars.mathErr, vars.totalSupplyNew) = addUInt(totalSupply, vars.mintTokens);
        require(vars.mathErr == MathError.NO_ERROR, "MINT_NEW_TOTAL_SUPPLY_CALCULATION_FAILED");

        (vars.mathErr, vars.accountTokensNew) = addUInt(accountTokens[minter], vars.mintTokens);
        require(vars.mathErr == MathError.NO_ERROR, "MINT_NEW_ACCOUNT_BALANCE_CALCULATION_FAILED");

        /* We write previously calculated values into storage */
        totalSupply = vars.totalSupplyNew;
        accountTokens[minter] = vars.accountTokensNew;

        /* We emit a Mint event, and a Transfer event */
        emit Mint(minter, vars.actualMintAmount, vars.mintTokens);
        emit Transfer(address(this), minter, vars.mintTokens);

        /* We call the defense hook */
        // unused function
        // comptroller.mintVerify(address(this), minter, vars.actualMintAmount, vars.mintTokens);

        return (uint(Error.NO_ERROR), vars.actualMintAmount);
    }

    /**
     * @notice Sender redeems cTokens in exchange for the underlying asset
     * @dev Accrues interest whether or not the operation succeeds, unless reverted
     * @param redeemTokens The number of cTokens to redeem into underlying
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function redeemInternal(uint redeemTokens) internal nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted redeem failed
            return fail(Error(error), FailureInfo.REDEEM_ACCRUE_INTEREST_FAILED);
        }
        // redeemFresh emits redeem-specific logs on errors, so we don't need to
        return redeemFresh(msg.sender, redeemTokens, 0);
    }

    /**
     * @notice Sender redeems cTokens in exchange for a specified amount of underlying asset
     * @dev Accrues interest whether or not the operation succeeds, unless reverted
     * @param redeemAmount The amount of underlying to receive from redeeming cTokens
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function redeemUnderlyingInternal(uint redeemAmount) internal nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted redeem failed
            return fail(Error(error), FailureInfo.REDEEM_ACCRUE_INTEREST_FAILED);
        }
        // redeemFresh emits redeem-specific logs on errors, so we don't need to
        return redeemFresh(msg.sender, 0, redeemAmount);
    }

    struct RedeemLocalVars {
        Error err;
        MathError mathErr;
        uint exchangeRateMantissa;
        uint redeemTokens;
        uint redeemAmount;
        uint totalSupplyNew;
        uint accountTokensNew;
    }

    /**
     * @notice User redeems cTokens in exchange for the underlying asset
     * @dev Assumes interest has already been accrued up to the current block
     * @param redeemer The address of the account which is redeeming the tokens
     * @param redeemTokensIn The number of cTokens to redeem into underlying (only one of redeemTokensIn or redeemAmountIn may be non-zero)
     * @param redeemAmountIn The number of underlying tokens to receive from redeeming cTokens (only one of redeemTokensIn or redeemAmountIn may be non-zero)
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function redeemFresh(address payable redeemer, uint redeemTokensIn, uint redeemAmountIn) internal returns (uint) {
        require(redeemTokensIn == 0 || redeemAmountIn == 0, "one of redeemTokensIn or redeemAmountIn must be zero");

        RedeemLocalVars memory vars;

        /* exchangeRate = invoke Exchange Rate Stored() */
        (vars.mathErr, vars.exchangeRateMantissa) = exchangeRateStoredInternal();
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_EXCHANGE_RATE_READ_FAILED, uint(vars.mathErr));
        }

        /* If redeemTokensIn > 0: */
        if (redeemTokensIn > 0) {
            /*
             * We calculate the exchange rate and the amount of underlying to be redeemed:
             *  redeemTokens = redeemTokensIn
             *  redeemAmount = redeemTokensIn x exchangeRateCurrent
             */
            vars.redeemTokens = redeemTokensIn;

            (vars.mathErr, vars.redeemAmount) = mulScalarTruncate(Exp({mantissa: vars.exchangeRateMantissa}), redeemTokensIn);
            if (vars.mathErr != MathError.NO_ERROR) {
                return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_EXCHANGE_TOKENS_CALCULATION_FAILED, uint(vars.mathErr));
            }
        } else {
            /*
             * We get the current exchange rate and calculate the amount to be redeemed:
             *  redeemTokens = redeemAmountIn / exchangeRate
             *  redeemAmount = redeemAmountIn
             */

            (vars.mathErr, vars.redeemTokens) = divScalarByExpTruncate(redeemAmountIn, Exp({mantissa: vars.exchangeRateMantissa}));
            if (vars.mathErr != MathError.NO_ERROR) {
                return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_EXCHANGE_AMOUNT_CALCULATION_FAILED, uint(vars.mathErr));
            }

            vars.redeemAmount = redeemAmountIn;
        }

        /* Fail if redeem not allowed */
        uint allowed = comptroller.redeemAllowed(address(this), redeemer, vars.redeemTokens);
        if (allowed != 0) {
            return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.REDEEM_COMPTROLLER_REJECTION, allowed);
        }

        /* Verify market's block number equals current block number */
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return fail(Error.MARKET_NOT_FRESH, FailureInfo.REDEEM_FRESHNESS_CHECK);
        }

        /*
         * We calculate the new total supply and redeemer balance, checking for underflow:
         *  totalSupplyNew = totalSupply - redeemTokens
         *  accountTokensNew = accountTokens[redeemer] - redeemTokens
         */
        (vars.mathErr, vars.totalSupplyNew) = subUInt(totalSupply, vars.redeemTokens);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_NEW_TOTAL_SUPPLY_CALCULATION_FAILED, uint(vars.mathErr));
        }

        (vars.mathErr, vars.accountTokensNew) = subUInt(accountTokens[redeemer], vars.redeemTokens);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_NEW_ACCOUNT_BALANCE_CALCULATION_FAILED, uint(vars.mathErr));
        }

        /* Fail gracefully if protocol has insufficient cash */
        if (getCashPrior() < vars.redeemAmount) {
            return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.REDEEM_TRANSFER_OUT_NOT_POSSIBLE);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /*
         * We invoke doTransferOut for the redeemer and the redeemAmount.
         *  Note: The cToken must handle variations between ERC-20 and ETH underlying.
         *  On success, the cToken has redeemAmount less of cash.
         *  doTransferOut reverts if anything goes wrong, since we can't be sure if side effects occurred.
         */
        doTransferOut(redeemer, vars.redeemAmount);

        /* We write previously calculated values into storage */
        totalSupply = vars.totalSupplyNew;
        accountTokens[redeemer] = vars.accountTokensNew;

        /* We emit a Transfer event, and a Redeem event */
        emit Transfer(redeemer, address(this), vars.redeemTokens);
        emit Redeem(redeemer, vars.redeemAmount, vars.redeemTokens);

        /* We call the defense hook */
        comptroller.redeemVerify(address(this), redeemer, vars.redeemAmount, vars.redeemTokens);

        return uint(Error.NO_ERROR);
    }

    /**
      * @notice Sender borrows assets from the protocol to their own address
      * @param borrowAmount The amount of the underlying asset to borrow
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function borrowInternal(uint borrowAmount) internal nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted borrow failed
            return fail(Error(error), FailureInfo.BORROW_ACCRUE_INTEREST_FAILED);
        }
        // borrowFresh emits borrow-specific logs on errors, so we don't need to
        return borrowFresh(msg.sender, borrowAmount);
    }

    struct BorrowLocalVars {
        MathError mathErr;
        uint accountBorrows;
        uint accountBorrowsNew;
        uint totalBorrowsNew;
    }

    /**
      * @notice Users borrow assets from the protocol to their own address
      * @param borrowAmount The amount of the underlying asset to borrow
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function borrowFresh(address payable borrower, uint borrowAmount) internal returns (uint) {
        /* Fail if borrow not allowed */
        uint allowed = comptroller.borrowAllowed(address(this), borrower, borrowAmount);
        if (allowed != 0) {
            return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.BORROW_COMPTROLLER_REJECTION, allowed);
        }

        /* Verify market's block number equals current block number */
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return fail(Error.MARKET_NOT_FRESH, FailureInfo.BORROW_FRESHNESS_CHECK);
        }

        /* Fail gracefully if protocol has insufficient underlying cash */
        if (getCashPrior() < borrowAmount) {
            return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.BORROW_CASH_NOT_AVAILABLE);
        }

        BorrowLocalVars memory vars;

        /*
         * We calculate the new borrower and total borrow balances, failing on overflow:
         *  accountBorrowsNew = accountBorrows + borrowAmount
         *  totalBorrowsNew = totalBorrows + borrowAmount
         */
        (vars.mathErr, vars.accountBorrows) = borrowBalanceStoredInternal(borrower);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.BORROW_ACCUMULATED_BALANCE_CALCULATION_FAILED, uint(vars.mathErr));
        }

        (vars.mathErr, vars.accountBorrowsNew) = addUInt(vars.accountBorrows, borrowAmount);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.BORROW_NEW_ACCOUNT_BORROW_BALANCE_CALCULATION_FAILED, uint(vars.mathErr));
        }

        (vars.mathErr, vars.totalBorrowsNew) = addUInt(totalBorrows, borrowAmount);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.BORROW_NEW_TOTAL_BALANCE_CALCULATION_FAILED, uint(vars.mathErr));
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /*
         * We invoke doTransferOut for the borrower and the borrowAmount.
         *  Note: The cToken must handle variations between ERC-20 and ETH underlying.
         *  On success, the cToken borrowAmount less of cash.
         *  doTransferOut reverts if anything goes wrong, since we can't be sure if side effects occurred.
         */
        doTransferOut(borrower, borrowAmount);

        /* We write the previously calculated values into storage */
        accountBorrows[borrower].principal = vars.accountBorrowsNew;
        accountBorrows[borrower].interestIndex = borrowIndex;
        totalBorrows = vars.totalBorrowsNew;

        /* We emit a Borrow event */
        emit Borrow(borrower, borrowAmount, vars.accountBorrowsNew, vars.totalBorrowsNew);

        /* We call the defense hook */
        // unused function
        // comptroller.borrowVerify(address(this), borrower, borrowAmount);

        return uint(Error.NO_ERROR);
    }

    /**
     * @notice Sender repays their own borrow
     * @param repayAmount The amount to repay
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
     */
    function repayBorrowInternal(uint repayAmount) internal nonReentrant returns (uint, uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted borrow failed
            return (fail(Error(error), FailureInfo.REPAY_BORROW_ACCRUE_INTEREST_FAILED), 0);
        }
        // repayBorrowFresh emits repay-borrow-specific logs on errors, so we don't need to
        return repayBorrowFresh(msg.sender, msg.sender, repayAmount);
    }

    /**
     * @notice Sender repays a borrow belonging to borrower
     * @param borrower the account with the debt being payed off
     * @param repayAmount The amount to repay
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
     */
    function repayBorrowBehalfInternal(address borrower, uint repayAmount) internal nonReentrant returns (uint, uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted borrow failed
            return (fail(Error(error), FailureInfo.REPAY_BEHALF_ACCRUE_INTEREST_FAILED), 0);
        }
        // repayBorrowFresh emits repay-borrow-specific logs on errors, so we don't need to
        return repayBorrowFresh(msg.sender, borrower, repayAmount);
    }

    struct RepayBorrowLocalVars {
        Error err;
        MathError mathErr;
        uint repayAmount;
        uint borrowerIndex;
        uint accountBorrows;
        uint accountBorrowsNew;
        uint totalBorrowsNew;
        uint actualRepayAmount;
    }

    /**
     * @notice Borrows are repaid by another user (possibly the borrower).
     * @param payer the account paying off the borrow
     * @param borrower the account with the debt being payed off
     * @param repayAmount the amount of undelrying tokens being returned
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
     */
    function repayBorrowFresh(address payer, address borrower, uint repayAmount) internal returns (uint, uint) {
        /* Fail if repayBorrow not allowed */
        uint allowed = comptroller.repayBorrowAllowed(address(this), payer, borrower, repayAmount);
        if (allowed != 0) {
            return (failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.REPAY_BORROW_COMPTROLLER_REJECTION, allowed), 0);
        }

        /* Verify market's block number equals current block number */
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return (fail(Error.MARKET_NOT_FRESH, FailureInfo.REPAY_BORROW_FRESHNESS_CHECK), 0);
        }

        RepayBorrowLocalVars memory vars;

        /* We remember the original borrowerIndex for verification purposes */
        vars.borrowerIndex = accountBorrows[borrower].interestIndex;

        /* We fetch the amount the borrower owes, with accumulated interest */
        (vars.mathErr, vars.accountBorrows) = borrowBalanceStoredInternal(borrower);
        if (vars.mathErr != MathError.NO_ERROR) {
            return (failOpaque(Error.MATH_ERROR, FailureInfo.REPAY_BORROW_ACCUMULATED_BALANCE_CALCULATION_FAILED, uint(vars.mathErr)), 0);
        }

        /* If repayAmount == -1, repayAmount = accountBorrows */
        if (repayAmount == uint(-1)) {
            vars.repayAmount = vars.accountBorrows;
        } else {
            vars.repayAmount = repayAmount;
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /*
         * We call doTransferIn for the payer and the repayAmount
         *  Note: The cToken must handle variations between ERC-20 and ETH underlying.
         *  On success, the cToken holds an additional repayAmount of cash.
         *  doTransferIn reverts if anything goes wrong, since we can't be sure if side effects occurred.
         *   it returns the amount actually transferred, in case of a fee.
         */
        vars.actualRepayAmount = doTransferIn(payer, vars.repayAmount);

        /*
         * We calculate the new borrower and total borrow balances, failing on underflow:
         *  accountBorrowsNew = accountBorrows - actualRepayAmount
         *  totalBorrowsNew = totalBorrows - actualRepayAmount
         */
        (vars.mathErr, vars.accountBorrowsNew) = subUInt(vars.accountBorrows, vars.actualRepayAmount);
        require(vars.mathErr == MathError.NO_ERROR, "REPAY_BORROW_NEW_ACCOUNT_BORROW_BALANCE_CALCULATION_FAILED");

        (vars.mathErr, vars.totalBorrowsNew) = subUInt(totalBorrows, vars.actualRepayAmount);
        require(vars.mathErr == MathError.NO_ERROR, "REPAY_BORROW_NEW_TOTAL_BALANCE_CALCULATION_FAILED");

        /* We write the previously calculated values into storage */
        accountBorrows[borrower].principal = vars.accountBorrowsNew;
        accountBorrows[borrower].interestIndex = borrowIndex;
        totalBorrows = vars.totalBorrowsNew;

        /* We emit a RepayBorrow event */
        emit RepayBorrow(payer, borrower, vars.actualRepayAmount, vars.accountBorrowsNew, vars.totalBorrowsNew);

        /* We call the defense hook */
        // unused function
        // comptroller.repayBorrowVerify(address(this), payer, borrower, vars.actualRepayAmount, vars.borrowerIndex);

        return (uint(Error.NO_ERROR), vars.actualRepayAmount);
    }

    /**
     * @notice The sender liquidates the borrowers collateral.
     *  The collateral seized is transferred to the liquidator.
     * @param borrower The borrower of this cToken to be liquidated
     * @param cTokenCollateral The market in which to seize collateral from the borrower
     * @param repayAmount The amount of the underlying borrowed asset to repay
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
     */
    function liquidateBorrowInternal(address borrower, uint repayAmount, CTokenInterface cTokenCollateral) internal nonReentrant returns (uint, uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted liquidation failed
            return (fail(Error(error), FailureInfo.LIQUIDATE_ACCRUE_BORROW_INTEREST_FAILED), 0);
        }

        error = cTokenCollateral.accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but we still want to log the fact that an attempted liquidation failed
            return (fail(Error(error), FailureInfo.LIQUIDATE_ACCRUE_COLLATERAL_INTEREST_FAILED), 0);
        }

        // liquidateBorrowFresh emits borrow-specific logs on errors, so we don't need to
        return liquidateBorrowFresh(msg.sender, borrower, repayAmount, cTokenCollateral);
    }

    /**
     * @notice The liquidator liquidates the borrowers collateral.
     *  The collateral seized is transferred to the liquidator.
     * @param borrower The borrower of this cToken to be liquidated
     * @param liquidator The address repaying the borrow and seizing collateral
     * @param cTokenCollateral The market in which to seize collateral from the borrower
     * @param repayAmount The amount of the underlying borrowed asset to repay
     * @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
     */
    function liquidateBorrowFresh(address liquidator, address borrower, uint repayAmount, CTokenInterface cTokenCollateral) internal returns (uint, uint) {
        /* Fail if liquidate not allowed */
        uint allowed = comptroller.liquidateBorrowAllowed(address(this), address(cTokenCollateral), liquidator, borrower, repayAmount);
        if (allowed != 0) {
            return (failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.LIQUIDATE_COMPTROLLER_REJECTION, allowed), 0);
        }

        /* Verify market's block number equals current block number */
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return (fail(Error.MARKET_NOT_FRESH, FailureInfo.LIQUIDATE_FRESHNESS_CHECK), 0);
        }

        /* Verify cTokenCollateral market's block number equals current block number */
        if (cTokenCollateral.accrualBlockTimestamp() != getBlockTimestamp()) {
            return (fail(Error.MARKET_NOT_FRESH, FailureInfo.LIQUIDATE_COLLATERAL_FRESHNESS_CHECK), 0);
        }

        /* Fail if borrower = liquidator */
        if (borrower == liquidator) {
            return (fail(Error.INVALID_ACCOUNT_PAIR, FailureInfo.LIQUIDATE_LIQUIDATOR_IS_BORROWER), 0);
        }

        /* Fail if repayAmount = 0 */
        if (repayAmount == 0) {
            return (fail(Error.INVALID_CLOSE_AMOUNT_REQUESTED, FailureInfo.LIQUIDATE_CLOSE_AMOUNT_IS_ZERO), 0);
        }

        /* Fail if repayAmount = -1 */
        if (repayAmount == uint(-1)) {
            return (fail(Error.INVALID_CLOSE_AMOUNT_REQUESTED, FailureInfo.LIQUIDATE_CLOSE_AMOUNT_IS_UINT_MAX), 0);
        }


        /* Fail if repayBorrow fails */
        (uint repayBorrowError, uint actualRepayAmount) = repayBorrowFresh(liquidator, borrower, repayAmount);
        if (repayBorrowError != uint(Error.NO_ERROR)) {
            return (fail(Error(repayBorrowError), FailureInfo.LIQUIDATE_REPAY_BORROW_FRESH_FAILED), 0);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /* We calculate the number of collateral tokens that will be seized */
        (uint amountSeizeError, uint seizeTokens) = comptroller.liquidateCalculateSeizeTokens(address(this), address(cTokenCollateral), actualRepayAmount);
        require(amountSeizeError == uint(Error.NO_ERROR), "LIQUIDATE_COMPTROLLER_CALCULATE_AMOUNT_SEIZE_FAILED");

        /* Revert if borrower collateral token balance < seizeTokens */
        require(cTokenCollateral.balanceOf(borrower) >= seizeTokens, "LIQUIDATE_SEIZE_TOO_MUCH");

        // If this is also the collateral, run seizeInternal to avoid re-entrancy, otherwise make an external call
        uint seizeError;
        if (address(cTokenCollateral) == address(this)) {
            seizeError = seizeInternal(address(this), liquidator, borrower, seizeTokens);
        } else {
            seizeError = cTokenCollateral.seize(liquidator, borrower, seizeTokens);
        }

        /* Revert if seize tokens fails (since we cannot be sure of side effects) */
        require(seizeError == uint(Error.NO_ERROR), "token seizure failed");

        /* We emit a LiquidateBorrow event */
        emit LiquidateBorrow(liquidator, borrower, actualRepayAmount, address(cTokenCollateral), seizeTokens);

        /* We call the defense hook */
        // unused function
        // comptroller.liquidateBorrowVerify(address(this), address(cTokenCollateral), liquidator, borrower, actualRepayAmount, seizeTokens);

        return (uint(Error.NO_ERROR), actualRepayAmount);
    }

    /**
     * @notice Transfers collateral tokens (this market) to the liquidator.
     * @dev Will fail unless called by another cToken during the process of liquidation.
     *  Its absolutely critical to use msg.sender as the borrowed cToken and not a parameter.
     * @param liquidator The account receiving seized collateral
     * @param borrower The account having collateral seized
     * @param seizeTokens The number of cTokens to seize
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function seize(address liquidator, address borrower, uint seizeTokens) external nonReentrant returns (uint) {
        return seizeInternal(msg.sender, liquidator, borrower, seizeTokens);
    }

    struct SeizeInternalLocalVars {
        MathError mathErr;
        uint borrowerTokensNew;
        uint liquidatorTokensNew;
        uint liquidatorSeizeTokens;
        uint protocolSeizeTokens;
        uint protocolSeizeAmount;
        uint exchangeRateMantissa;
        uint totalReservesNew;
        uint totalSupplyNew;
    }

    /**
     * @notice Transfers collateral tokens (this market) to the liquidator.
     * @dev Called only during an in-kind liquidation, or by liquidateBorrow during the liquidation of another CToken.
     *  Its absolutely critical to use msg.sender as the seizer cToken and not a parameter.
     * @param seizerToken The contract seizing the collateral (i.e. borrowed cToken)
     * @param liquidator The account receiving seized collateral
     * @param borrower The account having collateral seized
     * @param seizeTokens The number of cTokens to seize
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function seizeInternal(address seizerToken, address liquidator, address borrower, uint seizeTokens) internal returns (uint) {
        /* Fail if seize not allowed */
        uint allowed = comptroller.seizeAllowed(address(this), seizerToken, liquidator, borrower, seizeTokens);
        if (allowed != 0) {
            return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.LIQUIDATE_SEIZE_COMPTROLLER_REJECTION, allowed);
        }

        /* Fail if borrower = liquidator */
        if (borrower == liquidator) {
            return fail(Error.INVALID_ACCOUNT_PAIR, FailureInfo.LIQUIDATE_SEIZE_LIQUIDATOR_IS_BORROWER);
        }

        SeizeInternalLocalVars memory vars;

        /*
         * We calculate the new borrower and liquidator token balances, failing on underflow/overflow:
         *  borrowerTokensNew = accountTokens[borrower] - seizeTokens
         *  liquidatorTokensNew = accountTokens[liquidator] + seizeTokens
         */
        (vars.mathErr, vars.borrowerTokensNew) = subUInt(accountTokens[borrower], seizeTokens);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.LIQUIDATE_SEIZE_BALANCE_DECREMENT_FAILED, uint(vars.mathErr));
        }

        vars.protocolSeizeTokens = mul_(seizeTokens, Exp({mantissa: protocolSeizeShareMantissa}));
        vars.liquidatorSeizeTokens = sub_(seizeTokens, vars.protocolSeizeTokens);

        (vars.mathErr, vars.exchangeRateMantissa) = exchangeRateStoredInternal();
        require(vars.mathErr == MathError.NO_ERROR, "exchange rate math error");

        vars.protocolSeizeAmount = mul_ScalarTruncate(Exp({mantissa: vars.exchangeRateMantissa}), vars.protocolSeizeTokens);

        vars.totalReservesNew = add_(totalReserves, vars.protocolSeizeAmount);
        vars.totalSupplyNew = sub_(totalSupply, vars.protocolSeizeTokens);

        (vars.mathErr, vars.liquidatorTokensNew) = addUInt(accountTokens[liquidator], vars.liquidatorSeizeTokens);
        if (vars.mathErr != MathError.NO_ERROR) {
            return failOpaque(Error.MATH_ERROR, FailureInfo.LIQUIDATE_SEIZE_BALANCE_INCREMENT_FAILED, uint(vars.mathErr));
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /* We write the previously calculated values into storage */
        totalReserves = vars.totalReservesNew;
        totalSupply = vars.totalSupplyNew;
        accountTokens[borrower] = vars.borrowerTokensNew;
        accountTokens[liquidator] = vars.liquidatorTokensNew;

        /* Emit a Transfer event */
        emit Transfer(borrower, liquidator, vars.liquidatorSeizeTokens);
        emit Transfer(borrower, address(this), vars.protocolSeizeTokens);
        emit ReservesAdded(address(this), vars.protocolSeizeAmount, vars.totalReservesNew);

        /* We call the defense hook */
        // unused function
        // comptroller.seizeVerify(address(this), seizerToken, liquidator, borrower, seizeTokens);

        return uint(Error.NO_ERROR);
    }


    /*** Admin Functions ***/

    /**
      * @notice Begins transfer of admin rights. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
      * @dev Admin function to begin change of admin. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
      * @param newPendingAdmin New pending admin.
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _setPendingAdmin(address payable newPendingAdmin) external returns (uint) {
        // Check caller = admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_PENDING_ADMIN_OWNER_CHECK);
        }

        // Save current value, if any, for inclusion in log
        address oldPendingAdmin = pendingAdmin;

        // Store pendingAdmin with value newPendingAdmin
        pendingAdmin = newPendingAdmin;

        // Emit NewPendingAdmin(oldPendingAdmin, newPendingAdmin)
        emit NewPendingAdmin(oldPendingAdmin, newPendingAdmin);

        return uint(Error.NO_ERROR);
    }

    /**
      * @notice Accepts transfer of admin rights. msg.sender must be pendingAdmin
      * @dev Admin function for pending admin to accept role and update admin
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _acceptAdmin() external returns (uint) {
        // Check caller is pendingAdmin and pendingAdmin ≠ address(0)
        if (msg.sender != pendingAdmin || msg.sender == address(0)) {
            return fail(Error.UNAUTHORIZED, FailureInfo.ACCEPT_ADMIN_PENDING_ADMIN_CHECK);
        }

        // Save current values for inclusion in log
        address oldAdmin = admin;
        address oldPendingAdmin = pendingAdmin;

        // Store admin with value pendingAdmin
        admin = pendingAdmin;

        // Clear the pending value
        pendingAdmin = address(0);

        emit NewAdmin(oldAdmin, admin);
        emit NewPendingAdmin(oldPendingAdmin, pendingAdmin);

        return uint(Error.NO_ERROR);
    }

    /**
      * @notice Sets a new comptroller for the market
      * @dev Admin function to set a new comptroller
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _setComptroller(ComptrollerInterface newComptroller) public returns (uint) {
        // Check caller is admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_COMPTROLLER_OWNER_CHECK);
        }

        ComptrollerInterface oldComptroller = comptroller;
        // Ensure invoke comptroller.isComptroller() returns true
        require(newComptroller.isComptroller(), "marker method returned false");

        // Set market's comptroller to newComptroller
        comptroller = newComptroller;

        // Emit NewComptroller(oldComptroller, newComptroller)
        emit NewComptroller(oldComptroller, newComptroller);

        return uint(Error.NO_ERROR);
    }

    /**
      * @notice accrues interest and sets a new reserve factor for the protocol using _setReserveFactorFresh
      * @dev Admin function to accrue interest and set a new reserve factor
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _setReserveFactor(uint newReserveFactorMantissa) external nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but on top of that we want to log the fact that an attempted reserve factor change failed.
            return fail(Error(error), FailureInfo.SET_RESERVE_FACTOR_ACCRUE_INTEREST_FAILED);
        }
        // _setReserveFactorFresh emits reserve-factor-specific logs on errors, so we don't need to.
        return _setReserveFactorFresh(newReserveFactorMantissa);
    }

    /**
      * @notice Sets a new reserve factor for the protocol (*requires fresh interest accrual)
      * @dev Admin function to set a new reserve factor
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _setReserveFactorFresh(uint newReserveFactorMantissa) internal returns (uint) {
        // Check caller is admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_RESERVE_FACTOR_ADMIN_CHECK);
        }

        // Verify market's block number equals current block number
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return fail(Error.MARKET_NOT_FRESH, FailureInfo.SET_RESERVE_FACTOR_FRESH_CHECK);
        }

        // Check newReserveFactor ≤ maxReserveFactor
        if (newReserveFactorMantissa > reserveFactorMaxMantissa) {
            return fail(Error.BAD_INPUT, FailureInfo.SET_RESERVE_FACTOR_BOUNDS_CHECK);
        }

        uint oldReserveFactorMantissa = reserveFactorMantissa;
        reserveFactorMantissa = newReserveFactorMantissa;

        emit NewReserveFactor(oldReserveFactorMantissa, newReserveFactorMantissa);

        return uint(Error.NO_ERROR);
    }

    /**
     * @notice Accrues interest and reduces reserves by transferring from msg.sender
     * @param addAmount Amount of addition to reserves
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _addReservesInternal(uint addAmount) internal nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but on top of that we want to log the fact that an attempted reduce reserves failed.
            return fail(Error(error), FailureInfo.ADD_RESERVES_ACCRUE_INTEREST_FAILED);
        }

        // _addReservesFresh emits reserve-addition-specific logs on errors, so we don't need to.
        (error, ) = _addReservesFresh(addAmount);
        return error;
    }

    /**
     * @notice Add reserves by transferring from caller
     * @dev Requires fresh interest accrual
     * @param addAmount Amount of addition to reserves
     * @return (uint, uint) An error code (0=success, otherwise a failure (see ErrorReporter.sol for details)) and the actual amount added, net token fees
     */
    function _addReservesFresh(uint addAmount) internal returns (uint, uint) {
        // totalReserves + actualAddAmount
        uint totalReservesNew;
        uint actualAddAmount;

        // We fail gracefully unless market's block number equals current block number
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return (fail(Error.MARKET_NOT_FRESH, FailureInfo.ADD_RESERVES_FRESH_CHECK), actualAddAmount);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        /*
         * We call doTransferIn for the caller and the addAmount
         *  Note: The cToken must handle variations between ERC-20 and ETH underlying.
         *  On success, the cToken holds an additional addAmount of cash.
         *  doTransferIn reverts if anything goes wrong, since we can't be sure if side effects occurred.
         *  it returns the amount actually transferred, in case of a fee.
         */

        actualAddAmount = doTransferIn(msg.sender, addAmount);

        totalReservesNew = totalReserves + actualAddAmount;

        /* Revert on overflow */
        require(totalReservesNew >= totalReserves, "add reserves unexpected overflow");

        // Store reserves[n+1] = reserves[n] + actualAddAmount
        totalReserves = totalReservesNew;

        /* Emit NewReserves(admin, actualAddAmount, reserves[n+1]) */
        emit ReservesAdded(msg.sender, actualAddAmount, totalReservesNew);

        /* Return (NO_ERROR, actualAddAmount) */
        return (uint(Error.NO_ERROR), actualAddAmount);
    }


    /**
     * @notice Accrues interest and reduces reserves by transferring to admin
     * @param reduceAmount Amount of reduction to reserves
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _reduceReserves(uint reduceAmount) external nonReentrant returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but on top of that we want to log the fact that an attempted reduce reserves failed.
            return fail(Error(error), FailureInfo.REDUCE_RESERVES_ACCRUE_INTEREST_FAILED);
        }
        // _reduceReservesFresh emits reserve-reduction-specific logs on errors, so we don't need to.
        return _reduceReservesFresh(reduceAmount);
    }

    /**
     * @notice Reduces reserves by transferring to admin
     * @dev Requires fresh interest accrual
     * @param reduceAmount Amount of reduction to reserves
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _reduceReservesFresh(uint reduceAmount) internal returns (uint) {
        // totalReserves - reduceAmount
        uint totalReservesNew;

        // Check caller is admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.REDUCE_RESERVES_ADMIN_CHECK);
        }

        // We fail gracefully unless market's block number equals current block number
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return fail(Error.MARKET_NOT_FRESH, FailureInfo.REDUCE_RESERVES_FRESH_CHECK);
        }

        // Fail gracefully if protocol has insufficient underlying cash
        if (getCashPrior() < reduceAmount) {
            return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.REDUCE_RESERVES_CASH_NOT_AVAILABLE);
        }

        // Check reduceAmount ≤ reserves[n] (totalReserves)
        if (reduceAmount > totalReserves) {
            return fail(Error.BAD_INPUT, FailureInfo.REDUCE_RESERVES_VALIDATION);
        }

        /////////////////////////
        // EFFECTS & INTERACTIONS
        // (No safe failures beyond this point)

        totalReservesNew = totalReserves - reduceAmount;
        // We checked reduceAmount <= totalReserves above, so this should never revert.
        require(totalReservesNew <= totalReserves, "reduce reserves unexpected underflow");

        // Store reserves[n+1] = reserves[n] - reduceAmount
        totalReserves = totalReservesNew;

        // doTransferOut reverts if anything goes wrong, since we can't be sure if side effects occurred.
        doTransferOut(admin, reduceAmount);

        emit ReservesReduced(admin, reduceAmount, totalReservesNew);

        return uint(Error.NO_ERROR);
    }

    /**
     * @notice accrues interest and updates the interest rate model using _setInterestRateModelFresh
     * @dev Admin function to accrue interest and update the interest rate model
     * @param newInterestRateModel the new interest rate model to use
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _setInterestRateModel(InterestRateModel newInterestRateModel) public returns (uint) {
        uint error = accrueInterest();
        if (error != uint(Error.NO_ERROR)) {
            // accrueInterest emits logs on errors, but on top of that we want to log the fact that an attempted change of interest rate model failed
            return fail(Error(error), FailureInfo.SET_INTEREST_RATE_MODEL_ACCRUE_INTEREST_FAILED);
        }
        // _setInterestRateModelFresh emits interest-rate-model-update-specific logs on errors, so we don't need to.
        return _setInterestRateModelFresh(newInterestRateModel);
    }

    /**
     * @notice updates the interest rate model (*requires fresh interest accrual)
     * @dev Admin function to update the interest rate model
     * @param newInterestRateModel the new interest rate model to use
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _setInterestRateModelFresh(InterestRateModel newInterestRateModel) internal returns (uint) {

        // Used to store old model for use in the event that is emitted on success
        InterestRateModel oldInterestRateModel;

        // Check caller is admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_INTEREST_RATE_MODEL_OWNER_CHECK);
        }

        // We fail gracefully unless market's block number equals current block number
        if (accrualBlockTimestamp != getBlockTimestamp()) {
            return fail(Error.MARKET_NOT_FRESH, FailureInfo.SET_INTEREST_RATE_MODEL_FRESH_CHECK);
        }

        // Track the market's current interest rate model
        oldInterestRateModel = interestRateModel;

        // Ensure invoke newInterestRateModel.isInterestRateModel() returns true
        require(newInterestRateModel.isInterestRateModel(), "marker method returned false");

        // Set the interest rate model to newInterestRateModel
        interestRateModel = newInterestRateModel;

        // Emit NewMarketInterestRateModel(oldInterestRateModel, newInterestRateModel)
        emit NewMarketInterestRateModel(oldInterestRateModel, newInterestRateModel);

        return uint(Error.NO_ERROR);
    }

    /*** Safe Token ***/

    /**
     * @notice Gets balance of this contract in terms of the underlying
     * @dev This excludes the value of the current message, if any
     * @return The quantity of underlying owned by this contract
     */
    function getCashPrior() internal view returns (uint);

    /**
     * @dev Performs a transfer in, reverting upon failure. Returns the amount actually transferred to the protocol, in case of a fee.
     *  This may revert due to insufficient balance or insufficient allowance.
     */
    function doTransferIn(address from, uint amount) internal returns (uint);

    /**
     * @dev Performs a transfer out, ideally returning an explanatory error code upon failure tather than reverting.
     *  If caller has not called checked protocol's balance, may revert due to insufficient cash held in the contract.
     *  If caller has checked protocol's balance, and verified it is >= amount, this should not revert in normal conditions.
     */
    function doTransferOut(address payable to, uint amount) internal;


    /*** Reentrancy Guard ***/

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     */
    modifier nonReentrant() {
        require(_notEntered, "re-entered");
        _notEntered = false;
        _;
        _notEntered = true; // get a gas-refund post-Istanbul
    }
}

File 2 of 15 : CTokenInterfaces.sol
pragma solidity ^0.5.16;

import "./ComptrollerInterface.sol";
import "./InterestRateModel.sol";
import "./EIP20NonStandardInterface.sol";

contract CTokenStorage {
    /**
     * @dev Guard variable for re-entrancy checks
     */
    bool internal _notEntered;

    /**
     * @notice EIP-20 token name for this token
     */
    string public name;

    /**
     * @notice EIP-20 token symbol for this token
     */
    string public symbol;

    /**
     * @notice EIP-20 token decimals for this token
     */
    uint8 public decimals;

    /**
     * @notice Maximum borrow rate that can ever be applied (.0005% / block)
     */

    uint internal constant borrowRateMaxMantissa = 0.0005e16;

    /**
     * @notice Maximum fraction of interest that can be set aside for reserves
     */
    uint internal constant reserveFactorMaxMantissa = 1e18;

    /**
     * @notice Administrator for this contract
     */
    address payable public admin;

    /**
     * @notice Pending administrator for this contract
     */
    address payable public pendingAdmin;

    /**
     * @notice Contract which oversees inter-cToken operations
     */
    ComptrollerInterface public comptroller;

    /**
     * @notice Model which tells what the current interest rate should be
     */
    InterestRateModel public interestRateModel;

    /**
     * @notice Initial exchange rate used when minting the first CTokens (used when totalSupply = 0)
     */
    uint internal initialExchangeRateMantissa;

    /**
     * @notice Fraction of interest currently set aside for reserves
     */
    uint public reserveFactorMantissa;

    /**
     * @notice Block number that interest was last accrued at
     */
    uint public accrualBlockTimestamp;

    /**
     * @notice Accumulator of the total earned interest rate since the opening of the market
     */
    uint public borrowIndex;

    /**
     * @notice Total amount of outstanding borrows of the underlying in this market
     */
    uint public totalBorrows;

    /**
     * @notice Total amount of reserves of the underlying held in this market
     */
    uint public totalReserves;

    /**
     * @notice Total number of tokens in circulation
     */
    uint public totalSupply;

    /**
     * @notice Official record of token balances for each account
     */
    mapping (address => uint) internal accountTokens;

    /**
     * @notice Approved token transfer amounts on behalf of others
     */
    mapping (address => mapping (address => uint)) internal transferAllowances;

    /**
     * @notice Container for borrow balance information
     * @member principal Total balance (with accrued interest), after applying the most recent balance-changing action
     * @member interestIndex Global borrowIndex as of the most recent balance-changing action
     */
    struct BorrowSnapshot {
        uint principal;
        uint interestIndex;
    }

    /**
     * @notice Mapping of account addresses to outstanding borrow balances
     */
    mapping(address => BorrowSnapshot) internal accountBorrows;

    /**
     * @notice Share of seized collateral that is added to reserves
     */
    uint public constant protocolSeizeShareMantissa = 2.8e16; //2.8%

}

contract CTokenInterface is CTokenStorage {
    /**
     * @notice Indicator that this is a CToken contract (for inspection)
     */
    bool public constant isCToken = true;


    /*** Market Events ***/

    /**
     * @notice Event emitted when interest is accrued
     */
    event AccrueInterest(uint cashPrior, uint interestAccumulated, uint borrowIndex, uint totalBorrows);

    /**
     * @notice Event emitted when tokens are minted
     */
    event Mint(address minter, uint mintAmount, uint mintTokens);

    /**
     * @notice Event emitted when tokens are redeemed
     */
    event Redeem(address redeemer, uint redeemAmount, uint redeemTokens);

    /**
     * @notice Event emitted when underlying is borrowed
     */
    event Borrow(address borrower, uint borrowAmount, uint accountBorrows, uint totalBorrows);

    /**
     * @notice Event emitted when a borrow is repaid
     */
    event RepayBorrow(address payer, address borrower, uint repayAmount, uint accountBorrows, uint totalBorrows);

    /**
     * @notice Event emitted when a borrow is liquidated
     */
    event LiquidateBorrow(address liquidator, address borrower, uint repayAmount, address cTokenCollateral, uint seizeTokens);


    /*** Admin Events ***/

    /**
     * @notice Event emitted when pendingAdmin is changed
     */
    event NewPendingAdmin(address oldPendingAdmin, address newPendingAdmin);

    /**
     * @notice Event emitted when pendingAdmin is accepted, which means admin is updated
     */
    event NewAdmin(address oldAdmin, address newAdmin);

    /**
     * @notice Event emitted when comptroller is changed
     */
    event NewComptroller(ComptrollerInterface oldComptroller, ComptrollerInterface newComptroller);

    /**
     * @notice Event emitted when interestRateModel is changed
     */
    event NewMarketInterestRateModel(InterestRateModel oldInterestRateModel, InterestRateModel newInterestRateModel);

    /**
     * @notice Event emitted when the reserve factor is changed
     */
    event NewReserveFactor(uint oldReserveFactorMantissa, uint newReserveFactorMantissa);

    /**
     * @notice Event emitted when the reserves are added
     */
    event ReservesAdded(address benefactor, uint addAmount, uint newTotalReserves);

    /**
     * @notice Event emitted when the reserves are reduced
     */
    event ReservesReduced(address admin, uint reduceAmount, uint newTotalReserves);

    /**
     * @notice EIP20 Transfer event
     */
    event Transfer(address indexed from, address indexed to, uint amount);

    /**
     * @notice EIP20 Approval event
     */
    event Approval(address indexed owner, address indexed spender, uint amount);

    /**
     * @notice Failure event
     */
    event Failure(uint error, uint info, uint detail);


    /*** User Interface ***/

    function transfer(address dst, uint amount) external returns (bool);
    function transferFrom(address src, address dst, uint amount) external returns (bool);
    function approve(address spender, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function balanceOfUnderlying(address owner) external returns (uint);
    function getAccountSnapshot(address account) external view returns (uint, uint, uint, uint);
    function borrowRatePerBlock() external view returns (uint);
    function supplyRatePerBlock() external view returns (uint);
    function totalBorrowsCurrent() external returns (uint);
    function borrowBalanceCurrent(address account) external returns (uint);
    function borrowBalanceStored(address account) public view returns (uint);
    function exchangeRateCurrent() public returns (uint);
    function exchangeRateStored() public view returns (uint);
    function getCash() external view returns (uint);
    function accrueInterest() public returns (uint);
    function seize(address liquidator, address borrower, uint seizeTokens) external returns (uint);


    /*** Admin Functions ***/

    function _setPendingAdmin(address payable newPendingAdmin) external returns (uint);
    function _acceptAdmin() external returns (uint);
    function _setComptroller(ComptrollerInterface newComptroller) public returns (uint);
    function _setReserveFactor(uint newReserveFactorMantissa) external returns (uint);
    function _reduceReserves(uint reduceAmount) external returns (uint);
    function _setInterestRateModel(InterestRateModel newInterestRateModel) public returns (uint);
}

contract CErc20Storage {
    /**
     * @notice Underlying asset for this CToken
     */
    address public underlying;
}

contract CErc20Interface is CErc20Storage {

    /*** User Interface ***/

    function mint(uint mintAmount) external returns (uint);
    function redeem(uint redeemTokens) external returns (uint);
    function redeemUnderlying(uint redeemAmount) external returns (uint);
    function borrow(uint borrowAmount) external returns (uint);
    function repayBorrow(uint repayAmount) external returns (uint);
    function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint);
    function liquidateBorrow(address borrower, uint repayAmount, CTokenInterface cTokenCollateral) external returns (uint);
    function sweepToken(EIP20NonStandardInterface token) external;


    /*** Admin Functions ***/

    function _addReserves(uint addAmount) external returns (uint);
}

contract CDelegationStorage {
    /**
     * @notice Implementation address for this contract
     */
    address public implementation;
}

contract CDelegatorInterface is CDelegationStorage {
    /**
     * @notice Emitted when implementation is changed
     */
    event NewImplementation(address oldImplementation, address newImplementation);

    /**
     * @notice Called by the admin to update the implementation of the delegator
     * @param implementation_ The address of the new implementation for delegation
     * @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
     * @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
     */
    function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
}

contract CDelegateInterface is CDelegationStorage {
    /**
     * @notice Called by the delegator on a delegate to initialize it for duty
     * @dev Should revert if any issues arise which make it unfit for delegation
     * @param data The encoded bytes data for any initialization
     */
    function _becomeImplementation(bytes memory data) public;

    /**
     * @notice Called by the delegator on a delegate to forfeit its responsibility
     */
    function _resignImplementation() public;
}

File 3 of 15 : CarefulMath.sol
pragma solidity ^0.5.16;

/**
  * @title Careful Math
  * @author Compound
  * @notice Derived from OpenZeppelin's SafeMath library
  *         https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol
  */
contract CarefulMath {

    /**
     * @dev Possible error codes that we can return
     */
    enum MathError {
        NO_ERROR,
        DIVISION_BY_ZERO,
        INTEGER_OVERFLOW,
        INTEGER_UNDERFLOW
    }

    /**
    * @dev Multiplies two numbers, returns an error on overflow.
    */
    function mulUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (a == 0) {
            return (MathError.NO_ERROR, 0);
        }

        uint c = a * b;

        if (c / a != b) {
            return (MathError.INTEGER_OVERFLOW, 0);
        } else {
            return (MathError.NO_ERROR, c);
        }
    }

    /**
    * @dev Integer division of two numbers, truncating the quotient.
    */
    function divUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (b == 0) {
            return (MathError.DIVISION_BY_ZERO, 0);
        }

        return (MathError.NO_ERROR, a / b);
    }

    /**
    * @dev Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).
    */
    function subUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (b <= a) {
            return (MathError.NO_ERROR, a - b);
        } else {
            return (MathError.INTEGER_UNDERFLOW, 0);
        }
    }

    /**
    * @dev Adds two numbers, returns an error on overflow.
    */
    function addUInt(uint a, uint b) internal pure returns (MathError, uint) {
        uint c = a + b;

        if (c >= a) {
            return (MathError.NO_ERROR, c);
        } else {
            return (MathError.INTEGER_OVERFLOW, 0);
        }
    }

    /**
    * @dev add a and b and then subtract c
    */
    function addThenSubUInt(uint a, uint b, uint c) internal pure returns (MathError, uint) {
        (MathError err0, uint sum) = addUInt(a, b);

        if (err0 != MathError.NO_ERROR) {
            return (err0, 0);
        }

        return subUInt(sum, c);
    }
}

File 4 of 15 : Comptroller.sol
pragma solidity ^0.5.16;
pragma experimental ABIEncoderV2;

import "./CToken.sol";
import "./ErrorReporter.sol";
import "./PriceOracle.sol";
import "./ComptrollerInterface.sol";
import "./ComptrollerStorage.sol";
import "./Unitroller.sol";
import "./RewardDistributor.sol";

/**
 * @title Compound's Comptroller Contract
 * @author Compound
 */
contract Comptroller is
    ComptrollerV8Storage,
    ComptrollerInterface,
    ComptrollerErrorReporter,
    ExponentialNoError
{
    /// @notice Emitted when an admin supports a market
    event MarketListed(CToken cToken);

    /// @notice Emitted when an account enters a market
    event MarketEntered(CToken cToken, address account);

    /// @notice Emitted when an account exits a market
    event MarketExited(CToken cToken, address account);

    /// @notice Emitted when close factor is changed by admin
    event NewCloseFactor(
        uint256 oldCloseFactorMantissa,
        uint256 newCloseFactorMantissa
    );

    /// @notice Emitted when a collateral factor is changed by admin
    event NewCollateralFactor(
        CToken cToken,
        uint256 oldCollateralFactorMantissa,
        uint256 newCollateralFactorMantissa
    );

    /// @notice Emitted when liquidation incentive is changed by admin
    event NewLiquidationIncentive(
        uint256 oldLiquidationIncentiveMantissa,
        uint256 newLiquidationIncentiveMantissa
    );

    /// @notice Emitted when reward distributor is changed
    event NewRewardDistributor(
        address oldRewardDistributor,
        address newRewardDistributor
    );

    /// @notice Emitted when price oracle is changed
    event NewPriceOracle(
        PriceOracle oldPriceOracle,
        PriceOracle newPriceOracle
    );

    /// @notice Emitted when pause guardian is changed
    event NewPauseGuardian(address oldPauseGuardian, address newPauseGuardian);

    /// @notice Emitted when an action is paused globally
    event ActionPaused(string action, bool pauseState);

    /// @notice Emitted when an action is paused on a market
    event ActionPaused(CToken cToken, string action, bool pauseState);

    /// @notice Emitted when a new borrow-side COMP speed is calculated for a market
    event CompBorrowSpeedUpdated(CToken indexed cToken, uint256 newSpeed);

    /// @notice Emitted when a new supply-side COMP speed is calculated for a market
    event CompSupplySpeedUpdated(CToken indexed cToken, uint256 newSpeed);

    /// @notice Emitted when a new COMP speed is set for a contributor
    event ContributorCompSpeedUpdated(
        address indexed contributor,
        uint256 newSpeed
    );

    /// @notice Emitted when COMP is distributed to a supplier
    event DistributedSupplierComp(
        CToken indexed cToken,
        address indexed supplier,
        uint256 compDelta,
        uint256 compSupplyIndex
    );

    /// @notice Emitted when COMP is distributed to a borrower
    event DistributedBorrowerComp(
        CToken indexed cToken,
        address indexed borrower,
        uint256 compDelta,
        uint256 compBorrowIndex
    );

    /// @notice Emitted when borrow cap for a cToken is changed
    event NewBorrowCap(CToken indexed cToken, uint256 newBorrowCap);

    /// @notice Emitted when borrow cap guardian is changed
    event NewBorrowCapGuardian(
        address oldBorrowCapGuardian,
        address newBorrowCapGuardian
    );

    /// @notice Emitted when COMP is granted by admin
    event CompGranted(address recipient, uint256 amount);

    /// @notice Emitted when COMP accrued for a user has been manually adjusted.
    event CompAccruedAdjusted(
        address indexed user,
        uint256 oldCompAccrued,
        uint256 newCompAccrued
    );

    /// @notice Emitted when COMP receivable for a user has been updated.
    event CompReceivableUpdated(
        address indexed user,
        uint256 oldCompReceivable,
        uint256 newCompReceivable
    );

    /// @notice The initial COMP index for a market
    uint224 public constant compInitialIndex = 1e36;

    // closeFactorMantissa must be strictly greater than this value
    uint256 internal constant closeFactorMinMantissa = 0.05e18; // 0.05

    // closeFactorMantissa must not exceed this value
    uint256 internal constant closeFactorMaxMantissa = 0.9e18; // 0.9

    // No collateralFactorMantissa may exceed this value
    uint256 internal constant collateralFactorMaxMantissa = 0.9e18; // 0.9

    constructor() public {
        admin = msg.sender;
    }

    /*** Assets You Are In ***/

    /**
     * @notice Returns the assets an account has entered
     * @param account The address of the account to pull assets for
     * @return A dynamic list with the assets the account has entered
     */
    function getAssetsIn(address account)
        external
        view
        returns (CToken[] memory)
    {
        CToken[] memory assetsIn = accountAssets[account];

        return assetsIn;
    }

    /**
     * @notice Returns whether the given account is entered in the given asset
     * @param account The address of the account to check
     * @param cToken The cToken to check
     * @return True if the account is in the asset, otherwise false.
     */
    function checkMembership(address account, CToken cToken)
        external
        view
        returns (bool)
    {
        return markets[address(cToken)].accountMembership[account];
    }

    /**
     * @notice Add assets to be included in account liquidity calculation
     * @param cTokens The list of addresses of the cToken markets to be enabled
     * @return Success indicator for whether each corresponding market was entered
     */
    function enterMarkets(address[] memory cTokens)
        public
        returns (uint256[] memory)
    {
        uint256 len = cTokens.length;

        uint256[] memory results = new uint256[](len);
        for (uint256 i = 0; i < len; i++) {
            CToken cToken = CToken(cTokens[i]);

            results[i] = uint256(addToMarketInternal(cToken, msg.sender));
        }

        return results;
    }

    /**
     * @notice Add the market to the borrower's "assets in" for liquidity calculations
     * @param cToken The market to enter
     * @param borrower The address of the account to modify
     * @return Success indicator for whether the market was entered
     */
    function addToMarketInternal(CToken cToken, address borrower)
        internal
        returns (Error)
    {
        Market storage marketToJoin = markets[address(cToken)];

        if (!marketToJoin.isListed) {
            // market is not listed, cannot join
            return Error.MARKET_NOT_LISTED;
        }

        if (marketToJoin.accountMembership[borrower] == true) {
            // already joined
            return Error.NO_ERROR;
        }

        // survived the gauntlet, add to list
        // NOTE: we store these somewhat redundantly as a significant optimization
        //  this avoids having to iterate through the list for the most common use cases
        //  that is, only when we need to perform liquidity checks
        //  and not whenever we want to check if an account is in a particular market
        marketToJoin.accountMembership[borrower] = true;
        accountAssets[borrower].push(cToken);

        emit MarketEntered(cToken, borrower);

        return Error.NO_ERROR;
    }

    /**
     * @notice Removes asset from sender's account liquidity calculation
     * @dev Sender must not have an outstanding borrow balance in the asset,
     *  or be providing necessary collateral for an outstanding borrow.
     * @param cTokenAddress The address of the asset to be removed
     * @return Whether or not the account successfully exited the market
     */
    function exitMarket(address cTokenAddress) external returns (uint256) {
        CToken cToken = CToken(cTokenAddress);
        /* Get sender tokensHeld and amountOwed underlying from the cToken */
        (uint256 oErr, uint256 tokensHeld, uint256 amountOwed, ) = cToken
            .getAccountSnapshot(msg.sender);
        require(oErr == 0, "exitMarket: getAccountSnapshot failed"); // semi-opaque error code

        /* Fail if the sender has a borrow balance */
        if (amountOwed != 0) {
            return
                fail(
                    Error.NONZERO_BORROW_BALANCE,
                    FailureInfo.EXIT_MARKET_BALANCE_OWED
                );
        }

        /* Fail if the sender is not permitted to redeem all of their tokens */
        uint256 allowed = redeemAllowedInternal(
            cTokenAddress,
            msg.sender,
            tokensHeld
        );
        if (allowed != 0) {
            return
                failOpaque(
                    Error.REJECTION,
                    FailureInfo.EXIT_MARKET_REJECTION,
                    allowed
                );
        }

        Market storage marketToExit = markets[address(cToken)];

        /* Return true if the sender is not already ‘in’ the market */
        if (!marketToExit.accountMembership[msg.sender]) {
            return uint256(Error.NO_ERROR);
        }

        /* Set cToken account membership to false */
        delete marketToExit.accountMembership[msg.sender];

        /* Delete cToken from the account’s list of assets */
        // load into memory for faster iteration
        CToken[] memory userAssetList = accountAssets[msg.sender];
        uint256 len = userAssetList.length;
        uint256 assetIndex = len;
        for (uint256 i = 0; i < len; i++) {
            if (userAssetList[i] == cToken) {
                assetIndex = i;
                break;
            }
        }

        // We *must* have found the asset in the list or our redundant data structure is broken
        assert(assetIndex < len);

        // copy last item in list to location of item to be removed, reduce length by 1
        CToken[] storage storedList = accountAssets[msg.sender];
        storedList[assetIndex] = storedList[storedList.length - 1];
        storedList.length--;

        emit MarketExited(cToken, msg.sender);

        return uint256(Error.NO_ERROR);
    }

    /*** Policy Hooks ***/

    /**
     * @notice Checks if the account should be allowed to mint tokens in the given market
     * @param cToken The market to verify the mint against
     * @param minter The account which would get the minted tokens
     * @param mintAmount The amount of underlying being supplied to the market in exchange for tokens
     * @return 0 if the mint is allowed, otherwise a semi-opaque error code (See ErrorReporter.sol)
     */
    function mintAllowed(
        address cToken,
        address minter,
        uint256 mintAmount
    ) external returns (uint256) {
        // Pausing is a very serious situation - we revert to sound the alarms
        require(!mintGuardianPaused[cToken], "mint is paused");

        // Shh - currently unused
        minter;
        mintAmount;

        if (!markets[cToken].isListed) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        // Keep the flywheel moving
        RewardDistributor(rewardDistributor)
            .updateAndDistributeSupplierRewardsForToken(cToken, minter);

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates mint and reverts on rejection. May emit logs.
     * @param cToken Asset being minted
     * @param minter The address minting the tokens
     * @param actualMintAmount The amount of the underlying asset being minted
     * @param mintTokens The number of tokens being minted
     */
    function mintVerify(
        address cToken,
        address minter,
        uint256 actualMintAmount,
        uint256 mintTokens
    ) external {
        // Shh - currently unused
        cToken;
        minter;
        actualMintAmount;
        mintTokens;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /**
     * @notice Checks if the account should be allowed to redeem tokens in the given market
     * @param cToken The market to verify the redeem against
     * @param redeemer The account which would redeem the tokens
     * @param redeemTokens The number of cTokens to exchange for the underlying asset in the market
     * @return 0 if the redeem is allowed, otherwise a semi-opaque error code (See ErrorReporter.sol)
     */
    function redeemAllowed(
        address cToken,
        address redeemer,
        uint256 redeemTokens
    ) external returns (uint256) {
        uint256 allowed = redeemAllowedInternal(cToken, redeemer, redeemTokens);
        if (allowed != uint256(Error.NO_ERROR)) {
            return allowed;
        }

        // Keep the flywheel moving
        RewardDistributor(rewardDistributor)
            .updateAndDistributeSupplierRewardsForToken(cToken, redeemer);

        return uint256(Error.NO_ERROR);
    }

    function redeemAllowedInternal(
        address cToken,
        address redeemer,
        uint256 redeemTokens
    ) internal view returns (uint256) {
        if (!markets[cToken].isListed) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        /* If the redeemer is not 'in' the market, then we can bypass the liquidity check */
        if (!markets[cToken].accountMembership[redeemer]) {
            return uint256(Error.NO_ERROR);
        }

        /* Otherwise, perform a hypothetical liquidity check to guard against shortfall */
        (
            Error err,
            ,
            uint256 shortfall
        ) = getHypotheticalAccountLiquidityInternal(
                redeemer,
                CToken(cToken),
                redeemTokens,
                0
            );
        if (err != Error.NO_ERROR) {
            return uint256(err);
        }
        if (shortfall > 0) {
            return uint256(Error.INSUFFICIENT_LIQUIDITY);
        }

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates redeem and reverts on rejection. May emit logs.
     * @param cToken Asset being redeemed
     * @param redeemer The address redeeming the tokens
     * @param redeemAmount The amount of the underlying asset being redeemed
     * @param redeemTokens The number of tokens being redeemed
     */
    function redeemVerify(
        address cToken,
        address redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    ) external {
        // Shh - currently unused
        cToken;
        redeemer;

        // Require tokens is zero or amount is also zero
        if (redeemTokens == 0 && redeemAmount > 0) {
            revert("redeemTokens zero");
        }
    }

    /**
     * @notice Checks if the account should be allowed to borrow the underlying asset of the given market
     * @param cToken The market to verify the borrow against
     * @param borrower The account which would borrow the asset
     * @param borrowAmount The amount of underlying the account would borrow
     * @return 0 if the borrow is allowed, otherwise a semi-opaque error code (See ErrorReporter.sol)
     */
    function borrowAllowed(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external returns (uint256) {
        // Pausing is a very serious situation - we revert to sound the alarms
        require(!borrowGuardianPaused[cToken], "borrow is paused");

        if (!markets[cToken].isListed) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        if (!markets[cToken].accountMembership[borrower]) {
            // only cTokens may call borrowAllowed if borrower not in market
            require(msg.sender == cToken, "sender must be cToken");

            // attempt to add borrower to the market
            Error err = addToMarketInternal(CToken(msg.sender), borrower);
            if (err != Error.NO_ERROR) {
                return uint256(err);
            }

            // it should be impossible to break the important invariant
            assert(markets[cToken].accountMembership[borrower]);
        }

        if (oracle.getUnderlyingPrice(CToken(cToken)) == 0) {
            return uint256(Error.PRICE_ERROR);
        }

        uint256 borrowCap = borrowCaps[cToken];
        // Borrow cap of 0 corresponds to unlimited borrowing
        if (borrowCap != 0) {
            uint256 totalBorrows = CToken(cToken).totalBorrows();
            uint256 nextTotalBorrows = add_(totalBorrows, borrowAmount);
            require(nextTotalBorrows < borrowCap, "market borrow cap reached");
        }

        (
            Error err,
            ,
            uint256 shortfall
        ) = getHypotheticalAccountLiquidityInternal(
                borrower,
                CToken(cToken),
                0,
                borrowAmount
            );
        if (err != Error.NO_ERROR) {
            return uint256(err);
        }
        if (shortfall > 0) {
            return uint256(Error.INSUFFICIENT_LIQUIDITY);
        }

        // Keep the flywheel moving
        Exp memory borrowIndex = Exp({mantissa: CToken(cToken).borrowIndex()});
        RewardDistributor(rewardDistributor)
            .updateAndDistributeBorrowerRewardsForToken(
                cToken,
                borrower,
                borrowIndex
            );

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates borrow and reverts on rejection. May emit logs.
     * @param cToken Asset whose underlying is being borrowed
     * @param borrower The address borrowing the underlying
     * @param borrowAmount The amount of the underlying asset requested to borrow
     */
    function borrowVerify(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external {
        // Shh - currently unused
        cToken;
        borrower;
        borrowAmount;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /**
     * @notice Checks if the account should be allowed to repay a borrow in the given market
     * @param cToken The market to verify the repay against
     * @param payer The account which would repay the asset
     * @param borrower The account which would borrowed the asset
     * @param repayAmount The amount of the underlying asset the account would repay
     * @return 0 if the repay is allowed, otherwise a semi-opaque error code (See ErrorReporter.sol)
     */
    function repayBorrowAllowed(
        address cToken,
        address payer,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256) {
        // Shh - currently unused
        payer;
        borrower;
        repayAmount;

        if (!markets[cToken].isListed) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        // Keep the flywheel moving
        Exp memory borrowIndex = Exp({mantissa: CToken(cToken).borrowIndex()});
        RewardDistributor(rewardDistributor)
            .updateAndDistributeBorrowerRewardsForToken(
                cToken,
                borrower,
                borrowIndex
            );

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates repayBorrow and reverts on rejection. May emit logs.
     * @param cToken Asset being repaid
     * @param payer The address repaying the borrow
     * @param borrower The address of the borrower
     * @param actualRepayAmount The amount of underlying being repaid
     */
    function repayBorrowVerify(
        address cToken,
        address payer,
        address borrower,
        uint256 actualRepayAmount,
        uint256 borrowerIndex
    ) external {
        // Shh - currently unused
        cToken;
        payer;
        borrower;
        actualRepayAmount;
        borrowerIndex;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /**
     * @notice Checks if the liquidation should be allowed to occur
     * @param cTokenBorrowed Asset which was borrowed by the borrower
     * @param cTokenCollateral Asset which was used as collateral and will be seized
     * @param liquidator The address repaying the borrow and seizing the collateral
     * @param borrower The address of the borrower
     * @param repayAmount The amount of underlying being repaid
     */
    function liquidateBorrowAllowed(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256) {
        // Shh - currently unused
        liquidator;

        if (
            !markets[cTokenBorrowed].isListed ||
            !markets[cTokenCollateral].isListed
        ) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        uint256 borrowBalance = CToken(cTokenBorrowed).borrowBalanceStored(
            borrower
        );

        /* allow accounts to be liquidated if the market is deprecated */
        if (isDeprecated(CToken(cTokenBorrowed))) {
            require(
                borrowBalance >= repayAmount,
                "Can not repay more than the total borrow"
            );
        } else {
            /* The borrower must have shortfall in order to be liquidatable */
            (Error err, , uint256 shortfall) = getAccountLiquidityInternal(
                borrower
            );
            if (err != Error.NO_ERROR) {
                return uint256(err);
            }

            if (shortfall == 0) {
                return uint256(Error.INSUFFICIENT_SHORTFALL);
            }

            /* The liquidator may not repay more than what is allowed by the closeFactor */
            uint256 maxClose = mul_ScalarTruncate(
                Exp({mantissa: closeFactorMantissa}),
                borrowBalance
            );
            if (repayAmount > maxClose) {
                return uint256(Error.TOO_MUCH_REPAY);
            }
        }
        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates liquidateBorrow and reverts on rejection. May emit logs.
     * @param cTokenBorrowed Asset which was borrowed by the borrower
     * @param cTokenCollateral Asset which was used as collateral and will be seized
     * @param liquidator The address repaying the borrow and seizing the collateral
     * @param borrower The address of the borrower
     * @param actualRepayAmount The amount of underlying being repaid
     */
    function liquidateBorrowVerify(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 actualRepayAmount,
        uint256 seizeTokens
    ) external {
        // Shh - currently unused
        cTokenBorrowed;
        cTokenCollateral;
        liquidator;
        borrower;
        actualRepayAmount;
        seizeTokens;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /**
     * @notice Checks if the seizing of assets should be allowed to occur
     * @param cTokenCollateral Asset which was used as collateral and will be seized
     * @param cTokenBorrowed Asset which was borrowed by the borrower
     * @param liquidator The address repaying the borrow and seizing the collateral
     * @param borrower The address of the borrower
     * @param seizeTokens The number of collateral tokens to seize
     */
    function seizeAllowed(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external returns (uint256) {
        // Pausing is a very serious situation - we revert to sound the alarms
        require(!seizeGuardianPaused, "seize is paused");

        // Shh - currently unused
        seizeTokens;

        if (
            !markets[cTokenCollateral].isListed ||
            !markets[cTokenBorrowed].isListed
        ) {
            return uint256(Error.MARKET_NOT_LISTED);
        }

        if (
            CToken(cTokenCollateral).comptroller() !=
            CToken(cTokenBorrowed).comptroller()
        ) {
            return uint256(Error.COMPTROLLER_MISMATCH);
        }

        // Keep the flywheel moving
        // RewardDistributor(rewardDistributor)
        //     .updateAndDistributeSupplierRewardsForToken(
        //         cTokenCollateral,
        //         borrower
        //     );
        // RewardDistributor(rewardDistributor)
        //     .updateAndDistributeSupplierRewardsForToken(
        //         cTokenCollateral,
        //         liquidator
        //     );

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates seize and reverts on rejection. May emit logs.
     * @param cTokenCollateral Asset which was used as collateral and will be seized
     * @param cTokenBorrowed Asset which was borrowed by the borrower
     * @param liquidator The address repaying the borrow and seizing the collateral
     * @param borrower The address of the borrower
     * @param seizeTokens The number of collateral tokens to seize
     */
    function seizeVerify(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external {
        // Shh - currently unused
        cTokenCollateral;
        cTokenBorrowed;
        liquidator;
        borrower;
        seizeTokens;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /**
     * @notice Checks if the account should be allowed to transfer tokens in the given market
     * @param cToken The market to verify the transfer against
     * @param src The account which sources the tokens
     * @param dst The account which receives the tokens
     * @param transferTokens The number of cTokens to transfer
     * @return 0 if the transfer is allowed, otherwise a semi-opaque error code (See ErrorReporter.sol)
     */
    function transferAllowed(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external returns (uint256) {
        // Pausing is a very serious situation - we revert to sound the alarms
        require(!transferGuardianPaused, "transfer is paused");

        // Currently the only consideration is whether or not
        //  the src is allowed to redeem this many tokens
        uint256 allowed = redeemAllowedInternal(cToken, src, transferTokens);
        if (allowed != uint256(Error.NO_ERROR)) {
            return allowed;
        }

        // Keep the flywheel moving
        RewardDistributor(rewardDistributor)
            .updateAndDistributeSupplierRewardsForToken(cToken, src);
        RewardDistributor(rewardDistributor)
            .updateAndDistributeSupplierRewardsForToken(cToken, dst);

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Validates transfer and reverts on rejection. May emit logs.
     * @param cToken Asset being transferred
     * @param src The account which sources the tokens
     * @param dst The account which receives the tokens
     * @param transferTokens The number of cTokens to transfer
     */
    function transferVerify(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external {
        // Shh - currently unused
        cToken;
        src;
        dst;
        transferTokens;

        // Shh - we don't ever want this hook to be marked pure
        if (false) {
            maxAssets = maxAssets;
        }
    }

    /*** Liquidity/Liquidation Calculations ***/

    /**
     * @dev Local vars for avoiding stack-depth limits in calculating account liquidity.
     *  Note that `cTokenBalance` is the number of cTokens the account owns in the market,
     *  whereas `borrowBalance` is the amount of underlying that the account has borrowed.
     */
    struct AccountLiquidityLocalVars {
        uint256 sumCollateral;
        uint256 sumBorrowPlusEffects;
        uint256 cTokenBalance;
        uint256 borrowBalance;
        uint256 exchangeRateMantissa;
        uint256 oraclePriceMantissa;
        Exp collateralFactor;
        Exp exchangeRate;
        Exp oraclePrice;
        Exp tokensToDenom;
    }

    /**
     * @notice Determine the current account liquidity wrt collateral requirements
     * @return (possible error code (semi-opaque),
                account liquidity in excess of collateral requirements,
     *          account shortfall below collateral requirements)
     */
    function getAccountLiquidity(address account)
        public
        view
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        (
            Error err,
            uint256 liquidity,
            uint256 shortfall
        ) = getHypotheticalAccountLiquidityInternal(account, CToken(0), 0, 0);

        return (uint256(err), liquidity, shortfall);
    }

    /**
     * @notice Determine the current account liquidity wrt collateral requirements
     * @return (possible error code,
                account liquidity in excess of collateral requirements,
     *          account shortfall below collateral requirements)
     */
    function getAccountLiquidityInternal(address account)
        internal
        view
        returns (
            Error,
            uint256,
            uint256
        )
    {
        return
            getHypotheticalAccountLiquidityInternal(account, CToken(0), 0, 0);
    }

    /**
     * @notice Determine what the account liquidity would be if the given amounts were redeemed/borrowed
     * @param cTokenModify The market to hypothetically redeem/borrow in
     * @param account The account to determine liquidity for
     * @param redeemTokens The number of tokens to hypothetically redeem
     * @param borrowAmount The amount of underlying to hypothetically borrow
     * @return (possible error code (semi-opaque),
                hypothetical account liquidity in excess of collateral requirements,
     *          hypothetical account shortfall below collateral requirements)
     */
    function getHypotheticalAccountLiquidity(
        address account,
        address cTokenModify,
        uint256 redeemTokens,
        uint256 borrowAmount
    )
        public
        view
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        (
            Error err,
            uint256 liquidity,
            uint256 shortfall
        ) = getHypotheticalAccountLiquidityInternal(
                account,
                CToken(cTokenModify),
                redeemTokens,
                borrowAmount
            );
        return (uint256(err), liquidity, shortfall);
    }

    /**
     * @notice Determine what the account liquidity would be if the given amounts were redeemed/borrowed
     * @param cTokenModify The market to hypothetically redeem/borrow in
     * @param account The account to determine liquidity for
     * @param redeemTokens The number of tokens to hypothetically redeem
     * @param borrowAmount The amount of underlying to hypothetically borrow
     * @dev Note that we calculate the exchangeRateStored for each collateral cToken using stored data,
     *  without calculating accumulated interest.
     * @return (possible error code,
                hypothetical account liquidity in excess of collateral requirements,
     *          hypothetical account shortfall below collateral requirements)
     */
    function getHypotheticalAccountLiquidityInternal(
        address account,
        CToken cTokenModify,
        uint256 redeemTokens,
        uint256 borrowAmount
    )
        internal
        view
        returns (
            Error,
            uint256,
            uint256
        )
    {
        AccountLiquidityLocalVars memory vars; // Holds all our calculation results
        uint256 oErr;

        // For each asset the account is in
        CToken[] memory assets = accountAssets[account];
        for (uint256 i = 0; i < assets.length; i++) {
            CToken asset = assets[i];

            // Read the balances and exchange rate from the cToken
            (
                oErr,
                vars.cTokenBalance,
                vars.borrowBalance,
                vars.exchangeRateMantissa
            ) = asset.getAccountSnapshot(account);
            if (oErr != 0) {
                // semi-opaque error code, we assume NO_ERROR == 0 is invariant between upgrades
                return (Error.SNAPSHOT_ERROR, 0, 0);
            }
            vars.collateralFactor = Exp({
                mantissa: markets[address(asset)].collateralFactorMantissa
            });
            vars.exchangeRate = Exp({mantissa: vars.exchangeRateMantissa});

            // Get the normalized price of the asset
            vars.oraclePriceMantissa = oracle.getUnderlyingPrice(asset);
            if (vars.oraclePriceMantissa == 0) {
                return (Error.PRICE_ERROR, 0, 0);
            }
            vars.oraclePrice = Exp({mantissa: vars.oraclePriceMantissa});

            // Pre-compute a conversion factor from tokens -> ether (normalized price value)
            vars.tokensToDenom = mul_(
                mul_(vars.collateralFactor, vars.exchangeRate),
                vars.oraclePrice
            );

            // sumCollateral += tokensToDenom * cTokenBalance
            vars.sumCollateral = mul_ScalarTruncateAddUInt(
                vars.tokensToDenom,
                vars.cTokenBalance,
                vars.sumCollateral
            );

            // sumBorrowPlusEffects += oraclePrice * borrowBalance
            vars.sumBorrowPlusEffects = mul_ScalarTruncateAddUInt(
                vars.oraclePrice,
                vars.borrowBalance,
                vars.sumBorrowPlusEffects
            );

            // Calculate effects of interacting with cTokenModify
            if (asset == cTokenModify) {
                // redeem effect
                // sumBorrowPlusEffects += tokensToDenom * redeemTokens
                vars.sumBorrowPlusEffects = mul_ScalarTruncateAddUInt(
                    vars.tokensToDenom,
                    redeemTokens,
                    vars.sumBorrowPlusEffects
                );

                // borrow effect
                // sumBorrowPlusEffects += oraclePrice * borrowAmount
                vars.sumBorrowPlusEffects = mul_ScalarTruncateAddUInt(
                    vars.oraclePrice,
                    borrowAmount,
                    vars.sumBorrowPlusEffects
                );
            }
        }

        // These are safe, as the underflow condition is checked first
        if (vars.sumCollateral > vars.sumBorrowPlusEffects) {
            return (
                Error.NO_ERROR,
                vars.sumCollateral - vars.sumBorrowPlusEffects,
                0
            );
        } else {
            return (
                Error.NO_ERROR,
                0,
                vars.sumBorrowPlusEffects - vars.sumCollateral
            );
        }
    }

    /**
     * @notice Calculate number of tokens of collateral asset to seize given an underlying amount
     * @dev Used in liquidation (called in cToken.liquidateBorrowFresh)
     * @param cTokenBorrowed The address of the borrowed cToken
     * @param cTokenCollateral The address of the collateral cToken
     * @param actualRepayAmount The amount of cTokenBorrowed underlying to convert into cTokenCollateral tokens
     * @return (errorCode, number of cTokenCollateral tokens to be seized in a liquidation)
     */
    function liquidateCalculateSeizeTokens(
        address cTokenBorrowed,
        address cTokenCollateral,
        uint256 actualRepayAmount
    ) external view returns (uint256, uint256) {
        /* Read oracle prices for borrowed and collateral markets */
        uint256 priceBorrowedMantissa = oracle.getUnderlyingPrice(
            CToken(cTokenBorrowed)
        );
        uint256 priceCollateralMantissa = oracle.getUnderlyingPrice(
            CToken(cTokenCollateral)
        );
        if (priceBorrowedMantissa == 0 || priceCollateralMantissa == 0) {
            return (uint256(Error.PRICE_ERROR), 0);
        }

        /*
         * Get the exchange rate and calculate the number of collateral tokens to seize:
         *  seizeAmount = actualRepayAmount * liquidationIncentive * priceBorrowed / priceCollateral
         *  seizeTokens = seizeAmount / exchangeRate
         *   = actualRepayAmount * (liquidationIncentive * priceBorrowed) / (priceCollateral * exchangeRate)
         */
        uint256 exchangeRateMantissa = CToken(cTokenCollateral)
            .exchangeRateStored(); // Note: reverts on error
        uint256 seizeTokens;
        Exp memory numerator;
        Exp memory denominator;
        Exp memory ratio;

        numerator = mul_(
            Exp({mantissa: liquidationIncentiveMantissa}),
            Exp({mantissa: priceBorrowedMantissa})
        );
        denominator = mul_(
            Exp({mantissa: priceCollateralMantissa}),
            Exp({mantissa: exchangeRateMantissa})
        );
        ratio = div_(numerator, denominator);

        seizeTokens = mul_ScalarTruncate(ratio, actualRepayAmount);

        return (uint256(Error.NO_ERROR), seizeTokens);
    }

    /*** Admin Functions ***/

    /**
     * @notice Sets a new reward distributor for the comptroller
     * @dev Admin function to set a new price oracle
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _setRewardDistributor(address payable newRewardDistributor)
        public
        returns (uint256)
    {
        if (msg.sender != admin) {
            return uint256(Error.UNAUTHORIZED);
        }
        (bool success, ) = newRewardDistributor.call.value(0)(
            abi.encodeWithSignature("initialize()", 0)
        );
        if (!success) {
            return uint256(Error.REJECTION);
        }

        address oldRewardDistributor = rewardDistributor;
        rewardDistributor = newRewardDistributor;

        emit NewRewardDistributor(oldRewardDistributor, rewardDistributor);

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Sets a new price oracle for the comptroller
     * @dev Admin function to set a new price oracle
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function _setPriceOracle(PriceOracle newOracle) public returns (uint256) {
        // Check caller is admin
        if (msg.sender != admin) {
            return
                fail(
                    Error.UNAUTHORIZED,
                    FailureInfo.SET_PRICE_ORACLE_OWNER_CHECK
                );
        }

        // Track the old oracle for the comptroller
        PriceOracle oldOracle = oracle;

        // Set comptroller's oracle to newOracle
        oracle = newOracle;

        // Emit NewPriceOracle(oldOracle, newOracle)
        emit NewPriceOracle(oldOracle, newOracle);

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Sets the closeFactor used when liquidating borrows
     * @dev Admin function to set closeFactor
     * @param newCloseFactorMantissa New close factor, scaled by 1e18
     * @return uint 0=success, otherwise a failure
     */
    function _setCloseFactor(uint256 newCloseFactorMantissa)
        external
        returns (uint256)
    {
        // Check caller is admin
        require(msg.sender == admin, "only admin can set close factor");

        uint256 oldCloseFactorMantissa = closeFactorMantissa;
        closeFactorMantissa = newCloseFactorMantissa;
        emit NewCloseFactor(oldCloseFactorMantissa, closeFactorMantissa);

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Sets the collateralFactor for a market
     * @dev Admin function to set per-market collateralFactor
     * @param cToken The market to set the factor on
     * @param newCollateralFactorMantissa The new collateral factor, scaled by 1e18
     * @return uint 0=success, otherwise a failure. (See ErrorReporter for details)
     */
    function _setCollateralFactor(
        CToken cToken,
        uint256 newCollateralFactorMantissa
    ) external returns (uint256) {
        // Check caller is admin
        if (msg.sender != admin) {
            return
                fail(
                    Error.UNAUTHORIZED,
                    FailureInfo.SET_COLLATERAL_FACTOR_OWNER_CHECK
                );
        }

        // Verify market is listed
        Market storage market = markets[address(cToken)];
        if (!market.isListed) {
            return
                fail(
                    Error.MARKET_NOT_LISTED,
                    FailureInfo.SET_COLLATERAL_FACTOR_NO_EXISTS
                );
        }

        Exp memory newCollateralFactorExp = Exp({
            mantissa: newCollateralFactorMantissa
        });

        // Check collateral factor <= 0.9
        Exp memory highLimit = Exp({mantissa: collateralFactorMaxMantissa});
        if (lessThanExp(highLimit, newCollateralFactorExp)) {
            return
                fail(
                    Error.INVALID_COLLATERAL_FACTOR,
                    FailureInfo.SET_COLLATERAL_FACTOR_VALIDATION
                );
        }

        // If collateral factor != 0, fail if price == 0
        if (
            newCollateralFactorMantissa != 0 &&
            oracle.getUnderlyingPrice(cToken) == 0
        ) {
            return
                fail(
                    Error.PRICE_ERROR,
                    FailureInfo.SET_COLLATERAL_FACTOR_WITHOUT_PRICE
                );
        }

        // Set market's collateral factor to new collateral factor, remember old value
        uint256 oldCollateralFactorMantissa = market.collateralFactorMantissa;
        market.collateralFactorMantissa = newCollateralFactorMantissa;

        // Emit event with asset, old collateral factor, and new collateral factor
        emit NewCollateralFactor(
            cToken,
            oldCollateralFactorMantissa,
            newCollateralFactorMantissa
        );

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Sets liquidationIncentive
     * @dev Admin function to set liquidationIncentive
     * @param newLiquidationIncentiveMantissa New liquidationIncentive scaled by 1e18
     * @return uint 0=success, otherwise a failure. (See ErrorReporter for details)
     */
    function _setLiquidationIncentive(uint256 newLiquidationIncentiveMantissa)
        external
        returns (uint256)
    {
        // Check caller is admin
        if (msg.sender != admin) {
            return
                fail(
                    Error.UNAUTHORIZED,
                    FailureInfo.SET_LIQUIDATION_INCENTIVE_OWNER_CHECK
                );
        }

        // Save current value for use in log
        uint256 oldLiquidationIncentiveMantissa = liquidationIncentiveMantissa;

        // Set liquidation incentive to new incentive
        liquidationIncentiveMantissa = newLiquidationIncentiveMantissa;

        // Emit event with old incentive, new incentive
        emit NewLiquidationIncentive(
            oldLiquidationIncentiveMantissa,
            newLiquidationIncentiveMantissa
        );

        return uint256(Error.NO_ERROR);
    }

    /**
     * @notice Add the market to the markets mapping and set it as listed
     * @dev Admin function to set isListed and add support for the market
     * @param cToken The address of the market (token) to list
     * @return uint 0=success, otherwise a failure. (See enum Error for details)
     */
    function _supportMarket(CToken cToken) external returns (uint256) {
        if (msg.sender != admin) {
            return
                fail(
                    Error.UNAUTHORIZED,
                    FailureInfo.SUPPORT_MARKET_OWNER_CHECK
                );
        }

        if (markets[address(cToken)].isListed) {
            return
                fail(
                    Error.MARKET_ALREADY_LISTED,
                    FailureInfo.SUPPORT_MARKET_EXISTS
                );
        }

        cToken.isCToken(); // Sanity check to make sure its really a CToken

        // Note that isComped is not in active use anymore
        markets[address(cToken)] = Market({
            isListed: true,
            isComped: false,
            collateralFactorMantissa: 0
        });

        _addMarketInternal(address(cToken));
        _initializeMarket(address(cToken));

        emit MarketListed(cToken);

        return uint256(Error.NO_ERROR);
    }

    function _addMarketInternal(address cToken) internal {
        for (uint256 i = 0; i < allMarkets.length; i++) {
            require(allMarkets[i] != CToken(cToken), "market already added");
        }
        allMarkets.push(CToken(cToken));
    }

    function _initializeMarket(address cToken) internal {
        uint32 blockNumber = safe32(
            getBlockTimestamp(),
            "block number exceeds 32 bits"
        );

        CompMarketState storage supplyState = compSupplyState[cToken];
        CompMarketState storage borrowState = compBorrowState[cToken];

        /*
         * Update market state indices
         */
        if (supplyState.index == 0) {
            // Initialize supply state index with default value
            supplyState.index = compInitialIndex;
        }

        if (borrowState.index == 0) {
            // Initialize borrow state index with default value
            borrowState.index = compInitialIndex;
        }

        /*
         * Update market state block numbers
         */
        supplyState.block = borrowState.block = blockNumber;
    }

    /**
     * @notice Set the given borrow caps for the given cToken markets. Borrowing that brings total borrows to or above borrow cap will revert.
     * @dev Admin or borrowCapGuardian function to set the borrow caps. A borrow cap of 0 corresponds to unlimited borrowing.
     * @param cTokens The addresses of the markets (tokens) to change the borrow caps for
     * @param newBorrowCaps The new borrow cap values in underlying to be set. A value of 0 corresponds to unlimited borrowing.
     */
    function _setMarketBorrowCaps(
        CToken[] calldata cTokens,
        uint256[] calldata newBorrowCaps
    ) external {
        require(
            msg.sender == admin || msg.sender == borrowCapGuardian,
            "only admin or borrow cap guardian can set borrow caps"
        );

        uint256 numMarkets = cTokens.length;
        uint256 numBorrowCaps = newBorrowCaps.length;

        require(
            numMarkets != 0 && numMarkets == numBorrowCaps,
            "invalid input"
        );

        for (uint256 i = 0; i < numMarkets; i++) {
            borrowCaps[address(cTokens[i])] = newBorrowCaps[i];
            emit NewBorrowCap(cTokens[i], newBorrowCaps[i]);
        }
    }

    /**
     * @notice Admin function to change the Borrow Cap Guardian
     * @param newBorrowCapGuardian The address of the new Borrow Cap Guardian
     */
    function _setBorrowCapGuardian(address newBorrowCapGuardian) external {
        require(msg.sender == admin, "only admin can set borrow cap guardian");

        // Save current value for inclusion in log
        address oldBorrowCapGuardian = borrowCapGuardian;

        // Store borrowCapGuardian with value newBorrowCapGuardian
        borrowCapGuardian = newBorrowCapGuardian;

        // Emit NewBorrowCapGuardian(OldBorrowCapGuardian, NewBorrowCapGuardian)
        emit NewBorrowCapGuardian(oldBorrowCapGuardian, newBorrowCapGuardian);
    }

    /**
     * @notice Admin function to change the Pause Guardian
     * @param newPauseGuardian The address of the new Pause Guardian
     * @return uint 0=success, otherwise a failure. (See enum Error for details)
     */
    function _setPauseGuardian(address newPauseGuardian)
        public
        returns (uint256)
    {
        if (msg.sender != admin) {
            return
                fail(
                    Error.UNAUTHORIZED,
                    FailureInfo.SET_PAUSE_GUARDIAN_OWNER_CHECK
                );
        }

        // Save current value for inclusion in log
        address oldPauseGuardian = pauseGuardian;

        // Store pauseGuardian with value newPauseGuardian
        pauseGuardian = newPauseGuardian;

        // Emit NewPauseGuardian(OldPauseGuardian, NewPauseGuardian)
        emit NewPauseGuardian(oldPauseGuardian, pauseGuardian);

        return uint256(Error.NO_ERROR);
    }

    function _setMintPaused(CToken cToken, bool state) public returns (bool) {
        require(
            markets[address(cToken)].isListed,
            "cannot pause a market that is not listed"
        );
        require(
            msg.sender == pauseGuardian || msg.sender == admin,
            "only pause guardian and admin can pause"
        );
        require(msg.sender == admin || state == true, "only admin can unpause");

        mintGuardianPaused[address(cToken)] = state;
        emit ActionPaused(cToken, "Mint", state);
        return state;
    }

    function _setBorrowPaused(CToken cToken, bool state) public returns (bool) {
        require(
            markets[address(cToken)].isListed,
            "cannot pause a market that is not listed"
        );
        require(
            msg.sender == pauseGuardian || msg.sender == admin,
            "only pause guardian and admin can pause"
        );
        require(msg.sender == admin || state == true, "only admin can unpause");

        borrowGuardianPaused[address(cToken)] = state;
        emit ActionPaused(cToken, "Borrow", state);
        return state;
    }

    function _setTransferPaused(bool state) public returns (bool) {
        require(
            msg.sender == pauseGuardian || msg.sender == admin,
            "only pause guardian and admin can pause"
        );
        require(msg.sender == admin || state == true, "only admin can unpause");

        transferGuardianPaused = state;
        emit ActionPaused("Transfer", state);
        return state;
    }

    function _setSeizePaused(bool state) public returns (bool) {
        require(
            msg.sender == pauseGuardian || msg.sender == admin,
            "only pause guardian and admin can pause"
        );
        require(msg.sender == admin || state == true, "only admin can unpause");

        seizeGuardianPaused = state;
        emit ActionPaused("Seize", state);
        return state;
    }

    function _become(Unitroller unitroller) public {
        require(
            msg.sender == unitroller.admin(),
            "only unitroller admin can change brains"
        );
        require(
            unitroller._acceptImplementation() == 0,
            "change not authorized"
        );
    }

    /**
     * @notice Checks caller is admin, or this contract is becoming the new implementation
     */
    function adminOrInitializing() internal view returns (bool) {
        return msg.sender == admin || msg.sender == comptrollerImplementation;
    }

    /**
     * @notice Return all of the markets
     * @dev The automatic getter may be used to access an individual market.
     * @return The list of market addresses
     */
    function getAllMarkets() public view returns (CToken[] memory) {
        return allMarkets;
    }

    /**
     * @notice Returns true if the given cToken market has been deprecated
     * @dev All borrows in a deprecated cToken market can be immediately liquidated
     * @param cToken The market to check if deprecated
     */
    function isDeprecated(CToken cToken) public view returns (bool) {
        return
            markets[address(cToken)].collateralFactorMantissa == 0 &&
            borrowGuardianPaused[address(cToken)] == true &&
            cToken.reserveFactorMantissa() == 1e18;
    }

    function getBlockTimestamp() public view returns (uint256) {
        return block.timestamp;
    }

    /**
     * @notice Return whether a specific market is listed or not
     * @param cTokenAddress The address of the asset to be checked
     * @return Whether or not the market is listed
     */
    function isMarketListed(address cTokenAddress) public view returns (bool) {
        return markets[cTokenAddress].isListed;
    }
}

File 5 of 15 : ComptrollerInterface.sol
pragma solidity ^0.5.16;

contract ComptrollerInterface {
    /// @notice Indicator that this is a Comptroller contract (for inspection)
    bool public constant isComptroller = true;

    /*** Assets You Are In ***/

    function enterMarkets(address[] calldata cTokens) external returns (uint[] memory);
    function exitMarket(address cToken) external returns (uint);

    /*** Policy Hooks ***/

    function mintAllowed(address cToken, address minter, uint mintAmount) external returns (uint);
    function mintVerify(address cToken, address minter, uint mintAmount, uint mintTokens) external;

    function redeemAllowed(address cToken, address redeemer, uint redeemTokens) external returns (uint);
    function redeemVerify(address cToken, address redeemer, uint redeemAmount, uint redeemTokens) external;

    function borrowAllowed(address cToken, address borrower, uint borrowAmount) external returns (uint);
    function borrowVerify(address cToken, address borrower, uint borrowAmount) external;

    function repayBorrowAllowed(
        address cToken,
        address payer,
        address borrower,
        uint repayAmount) external returns (uint);
    function repayBorrowVerify(
        address cToken,
        address payer,
        address borrower,
        uint repayAmount,
        uint borrowerIndex) external;

    function liquidateBorrowAllowed(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint repayAmount) external returns (uint);
    function liquidateBorrowVerify(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint repayAmount,
        uint seizeTokens) external;

    function seizeAllowed(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint seizeTokens) external returns (uint);
    function seizeVerify(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint seizeTokens) external;

    function transferAllowed(address cToken, address src, address dst, uint transferTokens) external returns (uint);
    function transferVerify(address cToken, address src, address dst, uint transferTokens) external;

    /*** Liquidity/Liquidation Calculations ***/

    function liquidateCalculateSeizeTokens(
        address cTokenBorrowed,
        address cTokenCollateral,
        uint repayAmount) external view returns (uint, uint);
}

File 6 of 15 : ComptrollerStorage.sol
pragma solidity ^0.5.16;

import "./CToken.sol";
import "./PriceOracle.sol";

contract UnitrollerAdminStorage {
    /**
     * @notice Administrator for this contract
     */
    address public admin;

    /**
     * @notice Pending administrator for this contract
     */
    address public pendingAdmin;

    /**
     * @notice Active brains of Unitroller
     */
    address public comptrollerImplementation;

    /**
     * @notice Pending brains of Unitroller
     */
    address public pendingComptrollerImplementation;
}

contract ComptrollerV1Storage is UnitrollerAdminStorage {
    /**
     * @notice Oracle which gives the price of any given asset
     */
    PriceOracle public oracle;

    /**
     * @notice Multiplier used to calculate the maximum repayAmount when liquidating a borrow
     */
    uint256 public closeFactorMantissa;

    /**
     * @notice Multiplier representing the discount on collateral that a liquidator receives
     */
    uint256 public liquidationIncentiveMantissa;

    /**
     * @notice Max number of assets a single account can participate in (borrow or use as collateral)
     */
    uint256 public maxAssets;

    /**
     * @notice Per-account mapping of "assets you are in", capped by maxAssets
     */
    mapping(address => CToken[]) public accountAssets;
}

contract ComptrollerV2Storage is ComptrollerV1Storage {
    struct Market {
        /// @notice Whether or not this market is listed
        bool isListed;
        /**
         * @notice Multiplier representing the most one can borrow against their collateral in this market.
         *  For instance, 0.9 to allow borrowing 90% of collateral value.
         *  Must be between 0 and 1, and stored as a mantissa.
         */
        uint256 collateralFactorMantissa;
        /// @notice Per-market mapping of "accounts in this asset"
        mapping(address => bool) accountMembership;
        /// @notice Whether or not this market receives COMP
        bool isComped;
    }

    /**
     * @notice Official mapping of cTokens -> Market metadata
     * @dev Used e.g. to determine if a market is supported
     */
    mapping(address => Market) public markets;

    /**
     * @notice The Pause Guardian can pause certain actions as a safety mechanism.
     *  Actions which allow users to remove their own assets cannot be paused.
     *  Liquidation / seizing / transfer can only be paused globally, not by market.
     */
    address public pauseGuardian;
    bool public _mintGuardianPaused;
    bool public _borrowGuardianPaused;
    bool public transferGuardianPaused;
    bool public seizeGuardianPaused;
    mapping(address => bool) public mintGuardianPaused;
    mapping(address => bool) public borrowGuardianPaused;
}

contract ComptrollerV3Storage is ComptrollerV2Storage {
    struct CompMarketState {
        /// @notice The market's last updated compBorrowIndex or compSupplyIndex
        uint224 index;
        /// @notice The block number the index was last updated at
        uint32 block;
    }

    /// @notice A list of all markets
    CToken[] public allMarkets;

    /// @notice The rate at which the flywheel distributes COMP, per block
    uint256 public compRate;

    /// @notice The portion of compRate that each market currently receives
    mapping(address => uint256) public compSpeeds;

    /// @notice The COMP market supply state for each market
    mapping(address => CompMarketState) public compSupplyState;

    /// @notice The COMP market borrow state for each market
    mapping(address => CompMarketState) public compBorrowState;

    /// @notice The COMP borrow index for each market for each supplier as of the last time they accrued COMP
    mapping(address => mapping(address => uint256)) public compSupplierIndex;

    /// @notice The COMP borrow index for each market for each borrower as of the last time they accrued COMP
    mapping(address => mapping(address => uint256)) public compBorrowerIndex;

    /// @notice The COMP accrued but not yet transferred to each user
    mapping(address => uint256) public compAccrued;
}

contract ComptrollerV4Storage is ComptrollerV3Storage {
    // @notice The borrowCapGuardian can set borrowCaps to any number for any market. Lowering the borrow cap could disable borrowing on the given market.
    address public borrowCapGuardian;

    // @notice Borrow caps enforced by borrowAllowed for each cToken address. Defaults to zero which corresponds to unlimited borrowing.
    mapping(address => uint256) public borrowCaps;
}

contract ComptrollerV5Storage is ComptrollerV4Storage {
    /// @notice The portion of COMP that each contributor receives per block
    mapping(address => uint256) public compContributorSpeeds;

    /// @notice Last block at which a contributor's COMP rewards have been allocated
    mapping(address => uint256) public lastContributorBlock;
}

contract ComptrollerV6Storage is ComptrollerV5Storage {
    /// @notice The rate at which comp is distributed to the corresponding borrow market (per block)
    mapping(address => uint256) public compBorrowSpeeds;

    /// @notice The rate at which comp is distributed to the corresponding supply market (per block)
    mapping(address => uint256) public compSupplySpeeds;
}

contract ComptrollerV7Storage is ComptrollerV6Storage {
    /// @notice Flag indicating whether the function to fix COMP accruals has been executed (RE: proposal 62 bug)
    bool public proposal65FixExecuted;

    /// @notice Accounting storage mapping account addresses to how much COMP they owe the protocol.
    mapping(address => uint256) public compReceivable;
}

contract ComptrollerV8Storage is ComptrollerV7Storage {
    /// @notice RewardDistributor module that handles reward distribution.
    address payable public rewardDistributor;
}

File 7 of 15 : EIP20Interface.sol
pragma solidity ^0.5.16;

/**
 * @title ERC 20 Token Standard Interface
 *  https://eips.ethereum.org/EIPS/eip-20
 */
interface EIP20Interface {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);

    /**
      * @notice Get the total number of tokens in circulation
      * @return The supply of tokens
      */
    function totalSupply() external view returns (uint256);

    /**
     * @notice Gets the balance of the specified address
     * @param owner The address from which the balance will be retrieved
     * @return The balance
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
      * @notice Transfer `amount` tokens from `msg.sender` to `dst`
      * @param dst The address of the destination account
      * @param amount The number of tokens to transfer
      * @return Whether or not the transfer succeeded
      */
    function transfer(address dst, uint256 amount) external returns (bool success);

    /**
      * @notice Transfer `amount` tokens from `src` to `dst`
      * @param src The address of the source account
      * @param dst The address of the destination account
      * @param amount The number of tokens to transfer
      * @return Whether or not the transfer succeeded
      */
    function transferFrom(address src, address dst, uint256 amount) external returns (bool success);

    /**
      * @notice Approve `spender` to transfer up to `amount` from `src`
      * @dev This will overwrite the approval amount for `spender`
      *  and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
      * @param spender The address of the account which may transfer tokens
      * @param amount The number of tokens that are approved (-1 means infinite)
      * @return Whether or not the approval succeeded
      */
    function approve(address spender, uint256 amount) external returns (bool success);

    /**
      * @notice Get the current allowance from `owner` for `spender`
      * @param owner The address of the account which owns the tokens to be spent
      * @param spender The address of the account which may transfer tokens
      * @return The number of tokens allowed to be spent (-1 means infinite)
      */
    function allowance(address owner, address spender) external view returns (uint256 remaining);

    event Transfer(address indexed from, address indexed to, uint256 amount);
    event Approval(address indexed owner, address indexed spender, uint256 amount);
}

File 8 of 15 : EIP20NonStandardInterface.sol
pragma solidity ^0.5.16;

/**
 * @title EIP20NonStandardInterface
 * @dev Version of ERC20 with no return values for `transfer` and `transferFrom`
 *  See https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
 */
interface EIP20NonStandardInterface {

    /**
     * @notice Get the total number of tokens in circulation
     * @return The supply of tokens
     */
    function totalSupply() external view returns (uint256);

    /**
     * @notice Gets the balance of the specified address
     * @param owner The address from which the balance will be retrieved
     * @return The balance
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    ///
    /// !!!!!!!!!!!!!!
    /// !!! NOTICE !!! `transfer` does not return a value, in violation of the ERC-20 specification
    /// !!!!!!!!!!!!!!
    ///

    /**
      * @notice Transfer `amount` tokens from `msg.sender` to `dst`
      * @param dst The address of the destination account
      * @param amount The number of tokens to transfer
      */
    function transfer(address dst, uint256 amount) external;

    ///
    /// !!!!!!!!!!!!!!
    /// !!! NOTICE !!! `transferFrom` does not return a value, in violation of the ERC-20 specification
    /// !!!!!!!!!!!!!!
    ///

    /**
      * @notice Transfer `amount` tokens from `src` to `dst`
      * @param src The address of the source account
      * @param dst The address of the destination account
      * @param amount The number of tokens to transfer
      */
    function transferFrom(address src, address dst, uint256 amount) external;

    /**
      * @notice Approve `spender` to transfer up to `amount` from `src`
      * @dev This will overwrite the approval amount for `spender`
      *  and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
      * @param spender The address of the account which may transfer tokens
      * @param amount The number of tokens that are approved
      * @return Whether or not the approval succeeded
      */
    function approve(address spender, uint256 amount) external returns (bool success);

    /**
      * @notice Get the current allowance from `owner` for `spender`
      * @param owner The address of the account which owns the tokens to be spent
      * @param spender The address of the account which may transfer tokens
      * @return The number of tokens allowed to be spent
      */
    function allowance(address owner, address spender) external view returns (uint256 remaining);

    event Transfer(address indexed from, address indexed to, uint256 amount);
    event Approval(address indexed owner, address indexed spender, uint256 amount);
}

File 9 of 15 : ErrorReporter.sol
pragma solidity ^0.5.16;

contract ComptrollerErrorReporter {
    enum Error {
        NO_ERROR,
        UNAUTHORIZED,
        COMPTROLLER_MISMATCH,
        INSUFFICIENT_SHORTFALL,
        INSUFFICIENT_LIQUIDITY,
        INVALID_CLOSE_FACTOR,
        INVALID_COLLATERAL_FACTOR,
        INVALID_LIQUIDATION_INCENTIVE,
        MARKET_NOT_ENTERED, // no longer possible
        MARKET_NOT_LISTED,
        MARKET_ALREADY_LISTED,
        MATH_ERROR,
        NONZERO_BORROW_BALANCE,
        PRICE_ERROR,
        REJECTION,
        SNAPSHOT_ERROR,
        TOO_MANY_ASSETS,
        TOO_MUCH_REPAY
    }

    enum FailureInfo {
        ACCEPT_ADMIN_PENDING_ADMIN_CHECK,
        ACCEPT_PENDING_IMPLEMENTATION_ADDRESS_CHECK,
        EXIT_MARKET_BALANCE_OWED,
        EXIT_MARKET_REJECTION,
        SET_CLOSE_FACTOR_OWNER_CHECK,
        SET_CLOSE_FACTOR_VALIDATION,
        SET_COLLATERAL_FACTOR_OWNER_CHECK,
        SET_COLLATERAL_FACTOR_NO_EXISTS,
        SET_COLLATERAL_FACTOR_VALIDATION,
        SET_COLLATERAL_FACTOR_WITHOUT_PRICE,
        SET_IMPLEMENTATION_OWNER_CHECK,
        SET_LIQUIDATION_INCENTIVE_OWNER_CHECK,
        SET_LIQUIDATION_INCENTIVE_VALIDATION,
        SET_MAX_ASSETS_OWNER_CHECK,
        SET_PENDING_ADMIN_OWNER_CHECK,
        SET_PENDING_IMPLEMENTATION_OWNER_CHECK,
        SET_PRICE_ORACLE_OWNER_CHECK,
        SUPPORT_MARKET_EXISTS,
        SUPPORT_MARKET_OWNER_CHECK,
        SET_PAUSE_GUARDIAN_OWNER_CHECK
    }

    /**
      * @dev `error` corresponds to enum Error; `info` corresponds to enum FailureInfo, and `detail` is an arbitrary
      * contract-specific code that enables us to report opaque error codes from upgradeable contracts.
      **/
    event Failure(uint error, uint info, uint detail);

    /**
      * @dev use this when reporting a known error from the money market or a non-upgradeable collaborator
      */
    function fail(Error err, FailureInfo info) internal returns (uint) {
        emit Failure(uint(err), uint(info), 0);

        return uint(err);
    }

    /**
      * @dev use this when reporting an opaque error from an upgradeable collaborator contract
      */
    function failOpaque(Error err, FailureInfo info, uint opaqueError) internal returns (uint) {
        emit Failure(uint(err), uint(info), opaqueError);

        return uint(err);
    }
}

contract TokenErrorReporter {
    enum Error {
        NO_ERROR,
        UNAUTHORIZED,
        BAD_INPUT,
        COMPTROLLER_REJECTION,
        COMPTROLLER_CALCULATION_ERROR,
        INTEREST_RATE_MODEL_ERROR,
        INVALID_ACCOUNT_PAIR,
        INVALID_CLOSE_AMOUNT_REQUESTED,
        INVALID_COLLATERAL_FACTOR,
        MATH_ERROR,
        MARKET_NOT_FRESH,
        MARKET_NOT_LISTED,
        TOKEN_INSUFFICIENT_ALLOWANCE,
        TOKEN_INSUFFICIENT_BALANCE,
        TOKEN_INSUFFICIENT_CASH,
        TOKEN_TRANSFER_IN_FAILED,
        TOKEN_TRANSFER_OUT_FAILED
    }

    /*
     * Note: FailureInfo (but not Error) is kept in alphabetical order
     *       This is because FailureInfo grows significantly faster, and
     *       the order of Error has some meaning, while the order of FailureInfo
     *       is entirely arbitrary.
     */
    enum FailureInfo {
        ACCEPT_ADMIN_PENDING_ADMIN_CHECK,
        ACCRUE_INTEREST_ACCUMULATED_INTEREST_CALCULATION_FAILED,
        ACCRUE_INTEREST_BORROW_RATE_CALCULATION_FAILED,
        ACCRUE_INTEREST_NEW_BORROW_INDEX_CALCULATION_FAILED,
        ACCRUE_INTEREST_NEW_TOTAL_BORROWS_CALCULATION_FAILED,
        ACCRUE_INTEREST_NEW_TOTAL_RESERVES_CALCULATION_FAILED,
        ACCRUE_INTEREST_SIMPLE_INTEREST_FACTOR_CALCULATION_FAILED,
        BORROW_ACCUMULATED_BALANCE_CALCULATION_FAILED,
        BORROW_ACCRUE_INTEREST_FAILED,
        BORROW_CASH_NOT_AVAILABLE,
        BORROW_FRESHNESS_CHECK,
        BORROW_NEW_TOTAL_BALANCE_CALCULATION_FAILED,
        BORROW_NEW_ACCOUNT_BORROW_BALANCE_CALCULATION_FAILED,
        BORROW_MARKET_NOT_LISTED,
        BORROW_COMPTROLLER_REJECTION,
        LIQUIDATE_ACCRUE_BORROW_INTEREST_FAILED,
        LIQUIDATE_ACCRUE_COLLATERAL_INTEREST_FAILED,
        LIQUIDATE_COLLATERAL_FRESHNESS_CHECK,
        LIQUIDATE_COMPTROLLER_REJECTION,
        LIQUIDATE_COMPTROLLER_CALCULATE_AMOUNT_SEIZE_FAILED,
        LIQUIDATE_CLOSE_AMOUNT_IS_UINT_MAX,
        LIQUIDATE_CLOSE_AMOUNT_IS_ZERO,
        LIQUIDATE_FRESHNESS_CHECK,
        LIQUIDATE_LIQUIDATOR_IS_BORROWER,
        LIQUIDATE_REPAY_BORROW_FRESH_FAILED,
        LIQUIDATE_SEIZE_BALANCE_INCREMENT_FAILED,
        LIQUIDATE_SEIZE_BALANCE_DECREMENT_FAILED,
        LIQUIDATE_SEIZE_COMPTROLLER_REJECTION,
        LIQUIDATE_SEIZE_LIQUIDATOR_IS_BORROWER,
        LIQUIDATE_SEIZE_TOO_MUCH,
        MINT_ACCRUE_INTEREST_FAILED,
        MINT_COMPTROLLER_REJECTION,
        MINT_EXCHANGE_CALCULATION_FAILED,
        MINT_EXCHANGE_RATE_READ_FAILED,
        MINT_FRESHNESS_CHECK,
        MINT_NEW_ACCOUNT_BALANCE_CALCULATION_FAILED,
        MINT_NEW_TOTAL_SUPPLY_CALCULATION_FAILED,
        MINT_TRANSFER_IN_FAILED,
        MINT_TRANSFER_IN_NOT_POSSIBLE,
        REDEEM_ACCRUE_INTEREST_FAILED,
        REDEEM_COMPTROLLER_REJECTION,
        REDEEM_EXCHANGE_TOKENS_CALCULATION_FAILED,
        REDEEM_EXCHANGE_AMOUNT_CALCULATION_FAILED,
        REDEEM_EXCHANGE_RATE_READ_FAILED,
        REDEEM_FRESHNESS_CHECK,
        REDEEM_NEW_ACCOUNT_BALANCE_CALCULATION_FAILED,
        REDEEM_NEW_TOTAL_SUPPLY_CALCULATION_FAILED,
        REDEEM_TRANSFER_OUT_NOT_POSSIBLE,
        REDUCE_RESERVES_ACCRUE_INTEREST_FAILED,
        REDUCE_RESERVES_ADMIN_CHECK,
        REDUCE_RESERVES_CASH_NOT_AVAILABLE,
        REDUCE_RESERVES_FRESH_CHECK,
        REDUCE_RESERVES_VALIDATION,
        REPAY_BEHALF_ACCRUE_INTEREST_FAILED,
        REPAY_BORROW_ACCRUE_INTEREST_FAILED,
        REPAY_BORROW_ACCUMULATED_BALANCE_CALCULATION_FAILED,
        REPAY_BORROW_COMPTROLLER_REJECTION,
        REPAY_BORROW_FRESHNESS_CHECK,
        REPAY_BORROW_NEW_ACCOUNT_BORROW_BALANCE_CALCULATION_FAILED,
        REPAY_BORROW_NEW_TOTAL_BALANCE_CALCULATION_FAILED,
        REPAY_BORROW_TRANSFER_IN_NOT_POSSIBLE,
        SET_COLLATERAL_FACTOR_OWNER_CHECK,
        SET_COLLATERAL_FACTOR_VALIDATION,
        SET_COMPTROLLER_OWNER_CHECK,
        SET_INTEREST_RATE_MODEL_ACCRUE_INTEREST_FAILED,
        SET_INTEREST_RATE_MODEL_FRESH_CHECK,
        SET_INTEREST_RATE_MODEL_OWNER_CHECK,
        SET_MAX_ASSETS_OWNER_CHECK,
        SET_ORACLE_MARKET_NOT_LISTED,
        SET_PENDING_ADMIN_OWNER_CHECK,
        SET_RESERVE_FACTOR_ACCRUE_INTEREST_FAILED,
        SET_RESERVE_FACTOR_ADMIN_CHECK,
        SET_RESERVE_FACTOR_FRESH_CHECK,
        SET_RESERVE_FACTOR_BOUNDS_CHECK,
        TRANSFER_COMPTROLLER_REJECTION,
        TRANSFER_NOT_ALLOWED,
        TRANSFER_NOT_ENOUGH,
        TRANSFER_TOO_MUCH,
        ADD_RESERVES_ACCRUE_INTEREST_FAILED,
        ADD_RESERVES_FRESH_CHECK,
        ADD_RESERVES_TRANSFER_IN_NOT_POSSIBLE
    }

    /**
      * @dev `error` corresponds to enum Error; `info` corresponds to enum FailureInfo, and `detail` is an arbitrary
      * contract-specific code that enables us to report opaque error codes from upgradeable contracts.
      **/
    event Failure(uint error, uint info, uint detail);

    /**
      * @dev use this when reporting a known error from the money market or a non-upgradeable collaborator
      */
    function fail(Error err, FailureInfo info) internal returns (uint) {
        emit Failure(uint(err), uint(info), 0);

        return uint(err);
    }

    /**
      * @dev use this when reporting an opaque error from an upgradeable collaborator contract
      */
    function failOpaque(Error err, FailureInfo info, uint opaqueError) internal returns (uint) {
        emit Failure(uint(err), uint(info), opaqueError);

        return uint(err);
    }
}

File 10 of 15 : Exponential.sol
pragma solidity ^0.5.16;

import "./CarefulMath.sol";
import "./ExponentialNoError.sol";

/**
 * @title Exponential module for storing fixed-precision decimals
 * @author Compound
 * @dev Legacy contract for compatibility reasons with existing contracts that still use MathError
 * @notice Exp is a struct which stores decimals with a fixed precision of 18 decimal places.
 *         Thus, if we wanted to store the 5.1, mantissa would store 5.1e18. That is:
 *         `Exp({mantissa: 5100000000000000000})`.
 */
contract Exponential is CarefulMath, ExponentialNoError {
    /**
     * @dev Creates an exponential from numerator and denominator values.
     *      Note: Returns an error if (`num` * 10e18) > MAX_INT,
     *            or if `denom` is zero.
     */
    function getExp(uint num, uint denom) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint scaledNumerator) = mulUInt(num, expScale);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        (MathError err1, uint rational) = divUInt(scaledNumerator, denom);
        if (err1 != MathError.NO_ERROR) {
            return (err1, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: rational}));
    }

    /**
     * @dev Adds two exponentials, returning a new exponential.
     */
    function addExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        (MathError error, uint result) = addUInt(a.mantissa, b.mantissa);

        return (error, Exp({mantissa: result}));
    }

    /**
     * @dev Subtracts two exponentials, returning a new exponential.
     */
    function subExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        (MathError error, uint result) = subUInt(a.mantissa, b.mantissa);

        return (error, Exp({mantissa: result}));
    }

    /**
     * @dev Multiply an Exp by a scalar, returning a new Exp.
     */
    function mulScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint scaledMantissa) = mulUInt(a.mantissa, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: scaledMantissa}));
    }

    /**
     * @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.
     */
    function mulScalarTruncate(Exp memory a, uint scalar) pure internal returns (MathError, uint) {
        (MathError err, Exp memory product) = mulScalar(a, scalar);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return (MathError.NO_ERROR, truncate(product));
    }

    /**
     * @dev Multiply an Exp by a scalar, truncate, then add an to an unsigned integer, returning an unsigned integer.
     */
    function mulScalarTruncateAddUInt(Exp memory a, uint scalar, uint addend) pure internal returns (MathError, uint) {
        (MathError err, Exp memory product) = mulScalar(a, scalar);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return addUInt(truncate(product), addend);
    }

    /**
     * @dev Divide an Exp by a scalar, returning a new Exp.
     */
    function divScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint descaledMantissa) = divUInt(a.mantissa, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: descaledMantissa}));
    }

    /**
     * @dev Divide a scalar by an Exp, returning a new Exp.
     */
    function divScalarByExp(uint scalar, Exp memory divisor) pure internal returns (MathError, Exp memory) {
        /*
          We are doing this as:
          getExp(mulUInt(expScale, scalar), divisor.mantissa)

          How it works:
          Exp = a / b;
          Scalar = s;
          `s / (a / b)` = `b * s / a` and since for an Exp `a = mantissa, b = expScale`
        */
        (MathError err0, uint numerator) = mulUInt(expScale, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }
        return getExp(numerator, divisor.mantissa);
    }

    /**
     * @dev Divide a scalar by an Exp, then truncate to return an unsigned integer.
     */
    function divScalarByExpTruncate(uint scalar, Exp memory divisor) pure internal returns (MathError, uint) {
        (MathError err, Exp memory fraction) = divScalarByExp(scalar, divisor);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return (MathError.NO_ERROR, truncate(fraction));
    }

    /**
     * @dev Multiplies two exponentials, returning a new exponential.
     */
    function mulExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {

        (MathError err0, uint doubleScaledProduct) = mulUInt(a.mantissa, b.mantissa);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        // We add half the scale before dividing so that we get rounding instead of truncation.
        //  See "Listing 6" and text above it at https://accu.org/index.php/journals/1717
        // Without this change, a result like 6.6...e-19 will be truncated to 0 instead of being rounded to 1e-18.
        (MathError err1, uint doubleScaledProductWithHalfScale) = addUInt(halfExpScale, doubleScaledProduct);
        if (err1 != MathError.NO_ERROR) {
            return (err1, Exp({mantissa: 0}));
        }

        (MathError err2, uint product) = divUInt(doubleScaledProductWithHalfScale, expScale);
        // The only error `div` can return is MathError.DIVISION_BY_ZERO but we control `expScale` and it is not zero.
        assert(err2 == MathError.NO_ERROR);

        return (MathError.NO_ERROR, Exp({mantissa: product}));
    }

    /**
     * @dev Multiplies two exponentials given their mantissas, returning a new exponential.
     */
    function mulExp(uint a, uint b) pure internal returns (MathError, Exp memory) {
        return mulExp(Exp({mantissa: a}), Exp({mantissa: b}));
    }

    /**
     * @dev Multiplies three exponentials, returning a new exponential.
     */
    function mulExp3(Exp memory a, Exp memory b, Exp memory c) pure internal returns (MathError, Exp memory) {
        (MathError err, Exp memory ab) = mulExp(a, b);
        if (err != MathError.NO_ERROR) {
            return (err, ab);
        }
        return mulExp(ab, c);
    }

    /**
     * @dev Divides two exponentials, returning a new exponential.
     *     (a/scale) / (b/scale) = (a/scale) * (scale/b) = a/b,
     *  which we can scale as an Exp by calling getExp(a.mantissa, b.mantissa)
     */
    function divExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        return getExp(a.mantissa, b.mantissa);
    }
}

File 11 of 15 : ExponentialNoError.sol
pragma solidity ^0.5.16;

/**
 * @title Exponential module for storing fixed-precision decimals
 * @author Compound
 * @notice Exp is a struct which stores decimals with a fixed precision of 18 decimal places.
 *         Thus, if we wanted to store the 5.1, mantissa would store 5.1e18. That is:
 *         `Exp({mantissa: 5100000000000000000})`.
 */
contract ExponentialNoError {
    uint constant expScale = 1e18;
    uint constant doubleScale = 1e36;
    uint constant halfExpScale = expScale/2;
    uint constant mantissaOne = expScale;

    struct Exp {
        uint mantissa;
    }

    struct Double {
        uint mantissa;
    }

    /**
     * @dev Truncates the given exp to a whole number value.
     *      For example, truncate(Exp{mantissa: 15 * expScale}) = 15
     */
    function truncate(Exp memory exp) pure internal returns (uint) {
        // Note: We are not using careful math here as we're performing a division that cannot fail
        return exp.mantissa / expScale;
    }

    /**
     * @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.
     */
    function mul_ScalarTruncate(Exp memory a, uint scalar) pure internal returns (uint) {
        Exp memory product = mul_(a, scalar);
        return truncate(product);
    }

    /**
     * @dev Multiply an Exp by a scalar, truncate, then add an to an unsigned integer, returning an unsigned integer.
     */
    function mul_ScalarTruncateAddUInt(Exp memory a, uint scalar, uint addend) pure internal returns (uint) {
        Exp memory product = mul_(a, scalar);
        return add_(truncate(product), addend);
    }

    /**
     * @dev Checks if first Exp is less than second Exp.
     */
    function lessThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa < right.mantissa;
    }

    /**
     * @dev Checks if left Exp <= right Exp.
     */
    function lessThanOrEqualExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa <= right.mantissa;
    }

    /**
     * @dev Checks if left Exp > right Exp.
     */
    function greaterThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa > right.mantissa;
    }

    /**
     * @dev returns true if Exp is exactly zero
     */
    function isZeroExp(Exp memory value) pure internal returns (bool) {
        return value.mantissa == 0;
    }

    function safe224(uint n, string memory errorMessage) pure internal returns (uint224) {
        require(n < 2**224, errorMessage);
        return uint224(n);
    }

    function safe32(uint n, string memory errorMessage) pure internal returns (uint32) {
        require(n < 2**32, errorMessage);
        return uint32(n);
    }

    function add_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: add_(a.mantissa, b.mantissa)});
    }

    function add_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: add_(a.mantissa, b.mantissa)});
    }

    function add_(uint a, uint b) pure internal returns (uint) {
        return add_(a, b, "addition overflow");
    }

    function add_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        uint c = a + b;
        require(c >= a, errorMessage);
        return c;
    }

    function sub_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: sub_(a.mantissa, b.mantissa)});
    }

    function sub_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: sub_(a.mantissa, b.mantissa)});
    }

    function sub_(uint a, uint b) pure internal returns (uint) {
        return sub_(a, b, "subtraction underflow");
    }

    function sub_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        require(b <= a, errorMessage);
        return a - b;
    }

    function mul_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: mul_(a.mantissa, b.mantissa) / expScale});
    }

    function mul_(Exp memory a, uint b) pure internal returns (Exp memory) {
        return Exp({mantissa: mul_(a.mantissa, b)});
    }

    function mul_(uint a, Exp memory b) pure internal returns (uint) {
        return mul_(a, b.mantissa) / expScale;
    }

    function mul_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: mul_(a.mantissa, b.mantissa) / doubleScale});
    }

    function mul_(Double memory a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: mul_(a.mantissa, b)});
    }

    function mul_(uint a, Double memory b) pure internal returns (uint) {
        return mul_(a, b.mantissa) / doubleScale;
    }

    function mul_(uint a, uint b) pure internal returns (uint) {
        return mul_(a, b, "multiplication overflow");
    }

    function mul_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        if (a == 0 || b == 0) {
            return 0;
        }
        uint c = a * b;
        require(c / a == b, errorMessage);
        return c;
    }

    function div_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: div_(mul_(a.mantissa, expScale), b.mantissa)});
    }

    function div_(Exp memory a, uint b) pure internal returns (Exp memory) {
        return Exp({mantissa: div_(a.mantissa, b)});
    }

    function div_(uint a, Exp memory b) pure internal returns (uint) {
        return div_(mul_(a, expScale), b.mantissa);
    }

    function div_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: div_(mul_(a.mantissa, doubleScale), b.mantissa)});
    }

    function div_(Double memory a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: div_(a.mantissa, b)});
    }

    function div_(uint a, Double memory b) pure internal returns (uint) {
        return div_(mul_(a, doubleScale), b.mantissa);
    }

    function div_(uint a, uint b) pure internal returns (uint) {
        return div_(a, b, "divide by zero");
    }

    function div_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        require(b > 0, errorMessage);
        return a / b;
    }

    function fraction(uint a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: div_(mul_(a, doubleScale), b)});
    }
}

File 12 of 15 : InterestRateModel.sol
pragma solidity ^0.5.16;

/**
  * @title Compound's InterestRateModel Interface
  * @author Compound
  */
contract InterestRateModel {
    /// @notice Indicator that this is an InterestRateModel contract (for inspection)
    bool public constant isInterestRateModel = true;

    /**
      * @notice Calculates the current borrow interest rate per block
      * @param cash The total amount of cash the market has
      * @param borrows The total amount of borrows the market has outstanding
      * @param reserves The total amount of reserves the market has
      * @return The borrow rate per block (as a percentage, and scaled by 1e18)
      */
    function getBorrowRate(uint cash, uint borrows, uint reserves) external view returns (uint);

    /**
      * @notice Calculates the current supply interest rate per block
      * @param cash The total amount of cash the market has
      * @param borrows The total amount of borrows the market has outstanding
      * @param reserves The total amount of reserves the market has
      * @param reserveFactorMantissa The current reserve factor the market has
      * @return The supply rate per block (as a percentage, and scaled by 1e18)
      */
    function getSupplyRate(uint cash, uint borrows, uint reserves, uint reserveFactorMantissa) external view returns (uint);

}

File 13 of 15 : PriceOracle.sol
pragma solidity ^0.5.16;

import "./CToken.sol";

contract PriceOracle {
    /// @notice Indicator that this is a PriceOracle contract (for inspection)
    bool public constant isPriceOracle = true;

    /**
      * @notice Get the underlying price of a cToken asset
      * @param cToken The cToken to get the underlying price of
      * @return The underlying asset price mantissa (scaled by 1e18).
      *  Zero means the price is unavailable.
      */
    function getUnderlyingPrice(CToken cToken) external view returns (uint);
}

File 14 of 15 : RewardDistributor.sol
// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.5.16;
pragma experimental ABIEncoderV2;

import "./EIP20Interface.sol";
import "./Comptroller.sol";
import "./CToken.sol";

contract RewardDistributorStorage {
    /**
     * @notice Administrator for this contract
     */
    address public admin;

    /**
     * @notice Active brains of Unitroller
     */
    Comptroller public comptroller;

    struct RewardMarketState {
        /// @notice The market's last updated joeBorrowIndex or joeSupplyIndex
        uint224 index;
        /// @notice The timestamp number the index was last updated at
        uint32 timestamp;
    }

    /// @notice The portion of supply reward rate that each market currently receives
    mapping(uint8 => mapping(address => uint256)) public rewardSupplySpeeds;

    /// @notice The portion of borrow reward rate that each market currently receives
    mapping(uint8 => mapping(address => uint256)) public rewardBorrowSpeeds;

    /// @notice The JOE/AVAX market supply state for each market
    mapping(uint8 => mapping(address => RewardMarketState))
        public rewardSupplyState;

    /// @notice The JOE/AVAX market borrow state for each market
    mapping(uint8 => mapping(address => RewardMarketState))
        public rewardBorrowState;

    /// @notice The JOE/AVAX borrow index for each market for each supplier as of the last time they accrued reward
    mapping(uint8 => mapping(address => mapping(address => uint256)))
        public rewardSupplierIndex;

    /// @notice The JOE/AVAX borrow index for each market for each borrower as of the last time they accrued reward
    mapping(uint8 => mapping(address => mapping(address => uint256)))
        public rewardBorrowerIndex;

    /// @notice The JOE/AVAX accrued but not yet transferred to each user
    mapping(uint8 => mapping(address => uint256)) public rewardAccrued;

    /// @notice The initial reward index for a market
    uint224 public constant rewardInitialIndex = 1e36;

    /// @notice JOE token contract address
    address[] public rewardAddresses;
}

contract RewardDistributor is RewardDistributorStorage, Exponential {
    /// @notice Emitted when a new reward supply speed is calculated for a market
    event RewardSupplySpeedUpdated(
        uint8 rewardType,
        CToken indexed cToken,
        uint256 newSpeed
    );

    /// @notice Emitted when a new reward borrow speed is calculated for a market
    event RewardBorrowSpeedUpdated(
        uint8 rewardType,
        CToken indexed cToken,
        uint256 newSpeed
    );

    event RewardAdded(uint8 rewardType, address newRewardAddress);

    event RewardAddressChanged(
        uint8 rewardType,
        address oldRewardAddress,
        address newRewardAddress
    );

    /// @notice Emitted when JOE/AVAX is distributed to a supplier
    event DistributedSupplierReward(
        uint8 rewardType,
        CToken indexed cToken,
        address indexed supplier,
        uint256 rewardDelta,
        uint256 rewardSupplyIndex
    );

    /// @notice Emitted when JOE/AVAX is distributed to a borrower
    event DistributedBorrowerReward(
        uint8 rewardType,
        CToken indexed cToken,
        address indexed borrower,
        uint256 rewardDelta,
        uint256 rewardBorrowIndex
    );

    /// @notice Emitted when JOE is granted by admin
    event RewardGranted(uint8 rewardType, address recipient, uint256 amount);

    bool private initialized;

    constructor() public {
        admin = msg.sender;
    }

    function initialize() public {
        require(!initialized, "RewardDistributor already initialized");
        comptroller = Comptroller(msg.sender);
        initialized = true;
    }

    /**
     * @notice Checks caller is admin, or this contract is becoming the new implementation
     */
    function adminOrInitializing() internal view returns (bool) {
        return msg.sender == admin || msg.sender == address(comptroller);
    }

    /**
     * @notice Set JOE/AVAX speed for a single market
     * @param rewardType 0 = QI, 1 = AVAX
     * @param cToken The market whose reward speed to update
     * @param rewardSupplySpeed New reward supply speed for market
     * @param rewardBorrowSpeed New reward borrow speed for market
     */
    function _setRewardSpeed(
        uint8 rewardType,
        CToken cToken,
        uint256 rewardSupplySpeed,
        uint256 rewardBorrowSpeed
    ) public {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        require(adminOrInitializing(), "only admin can set reward speed");
        setRewardSpeedInternal(
            rewardType,
            cToken,
            rewardSupplySpeed,
            rewardBorrowSpeed
        );
    }

    /**
     * @notice Set JOE/AVAX speed for a single market
     * @param rewardType  0: JOE, 1: AVAX
     * @param cToken The market whose speed to update
     * @param newSupplySpeed New JOE or AVAX supply speed for market
     * @param newBorrowSpeed New JOE or AVAX borrow speed for market
     */
    function setRewardSpeedInternal(
        uint8 rewardType,
        CToken cToken,
        uint256 newSupplySpeed,
        uint256 newBorrowSpeed
    ) internal {
        // Handle new supply speeed
        uint256 currentRewardSupplySpeed = rewardSupplySpeeds[rewardType][
            address(cToken)
        ];
        if (currentRewardSupplySpeed != 0) {
            // note that JOE speed could be set to 0 to halt liquidity rewards for a market
            updateRewardSupplyIndex(rewardType, address(cToken));
        } else if (newSupplySpeed != 0) {
            // Add the JOE market
            require(
                comptroller.isMarketListed(address(cToken)),
                "reward market is not listed"
            );

            if (
                rewardSupplyState[rewardType][address(cToken)].index == 0 &&
                rewardSupplyState[rewardType][address(cToken)].timestamp == 0
            ) {
                rewardSupplyState[rewardType][
                    address(cToken)
                ] = RewardMarketState({
                    index: rewardInitialIndex,
                    timestamp: safe32(
                        getBlockTimestamp(),
                        "block timestamp exceeds 32 bits"
                    )
                });
            }
        }

        if (currentRewardSupplySpeed != newSupplySpeed) {
            rewardSupplySpeeds[rewardType][address(cToken)] = newSupplySpeed;
            emit RewardSupplySpeedUpdated(rewardType, cToken, newSupplySpeed);
        }

        // Handle new borrow speed
        uint256 currentRewardBorrowSpeed = rewardBorrowSpeeds[rewardType][
            address(cToken)
        ];
        if (currentRewardBorrowSpeed != 0) {
            // note that JOE speed could be set to 0 to halt liquidity rewards for a market
            Exp memory borrowIndex = Exp({mantissa: cToken.borrowIndex()});
            updateRewardBorrowIndex(rewardType, address(cToken), borrowIndex);
        } else if (newBorrowSpeed != 0) {
            // Add the JOE market
            require(
                comptroller.isMarketListed(address(cToken)),
                "reward market is not listed"
            );

            if (
                rewardBorrowState[rewardType][address(cToken)].index == 0 &&
                rewardBorrowState[rewardType][address(cToken)].timestamp == 0
            ) {
                rewardBorrowState[rewardType][
                    address(cToken)
                ] = RewardMarketState({
                    index: rewardInitialIndex,
                    timestamp: safe32(
                        getBlockTimestamp(),
                        "block timestamp exceeds 32 bits"
                    )
                });
            }
        }

        if (currentRewardBorrowSpeed != newBorrowSpeed) {
            rewardBorrowSpeeds[rewardType][address(cToken)] = newBorrowSpeed;
            emit RewardBorrowSpeedUpdated(rewardType, cToken, newBorrowSpeed);
        }
    }

    /**
     * @notice Accrue JOE/AVAX to the market by updating the supply index
     * @param rewardType  0: JOE, 1: AVAX
     * @param cToken The market whose supply index to update
     */
    function updateRewardSupplyIndex(uint8 rewardType, address cToken)
        internal
    {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        RewardMarketState storage supplyState = rewardSupplyState[rewardType][
            cToken
        ];
        uint256 supplySpeed = rewardSupplySpeeds[rewardType][cToken];
        uint256 blockTimestamp = getBlockTimestamp();
        uint256 deltaTimestamps = sub_(
            blockTimestamp,
            uint256(supplyState.timestamp)
        );
        if (deltaTimestamps > 0 && supplySpeed > 0) {
            uint256 supplyTokens = CToken(cToken).totalSupply();
            uint256 rewardAccrued = mul_(deltaTimestamps, supplySpeed);
            Double memory ratio = supplyTokens > 0
                ? fraction(rewardAccrued, supplyTokens)
                : Double({mantissa: 0});
            Double memory index = add_(
                Double({mantissa: supplyState.index}),
                ratio
            );
            rewardSupplyState[rewardType][cToken] = RewardMarketState({
                index: safe224(index.mantissa, "new index exceeds 224 bits"),
                timestamp: safe32(
                    blockTimestamp,
                    "block timestamp exceeds 32 bits"
                )
            });
        } else if (deltaTimestamps > 0) {
            supplyState.timestamp = safe32(
                blockTimestamp,
                "block timestamp exceeds 32 bits"
            );
        }
    }

    /**
     * @notice Accrue JOE/AVAX to the market by updating the borrow index
     * @param rewardType  0: JOE, 1: AVAX
     * @param cToken The market whose borrow index to update
     * @param marketBorrowIndex Current index of the borrow market
     */
    function updateRewardBorrowIndex(
        uint8 rewardType,
        address cToken,
        Exp memory marketBorrowIndex
    ) internal {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        RewardMarketState storage borrowState = rewardBorrowState[rewardType][
            cToken
        ];
        uint256 borrowSpeed = rewardBorrowSpeeds[rewardType][cToken];
        uint256 blockTimestamp = getBlockTimestamp();
        uint256 deltaTimestamps = sub_(
            blockTimestamp,
            uint256(borrowState.timestamp)
        );
        if (deltaTimestamps > 0 && borrowSpeed > 0) {
            uint256 borrowAmount = div_(
                CToken(cToken).totalBorrows(),
                marketBorrowIndex
            );
            uint256 rewardAccrued = mul_(deltaTimestamps, borrowSpeed);
            Double memory ratio = borrowAmount > 0
                ? fraction(rewardAccrued, borrowAmount)
                : Double({mantissa: 0});
            Double memory index = add_(
                Double({mantissa: borrowState.index}),
                ratio
            );
            rewardBorrowState[rewardType][cToken] = RewardMarketState({
                index: safe224(index.mantissa, "new index exceeds 224 bits"),
                timestamp: safe32(
                    blockTimestamp,
                    "block timestamp exceeds 32 bits"
                )
            });
        } else if (deltaTimestamps > 0) {
            borrowState.timestamp = safe32(
                blockTimestamp,
                "block timestamp exceeds 32 bits"
            );
        }
    }

    /**
     * @notice Calculate JOE/AVAX accrued by a supplier and possibly transfer it to them
     * @param rewardType  0: JOE, 1: AVAX
     * @param cToken The market in which the supplier is interacting
     * @param supplier The address of the supplier to distribute JOE/AVAX to
     */
    function distributeSupplierReward(
        uint8 rewardType,
        address cToken,
        address supplier
    ) internal {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        RewardMarketState storage supplyState = rewardSupplyState[rewardType][
            cToken
        ];
        Double memory supplyIndex = Double({mantissa: supplyState.index});
        Double memory supplierIndex = Double({
            mantissa: rewardSupplierIndex[rewardType][cToken][supplier]
        });
        rewardSupplierIndex[rewardType][cToken][supplier] = supplyIndex
            .mantissa;

        if (supplierIndex.mantissa == 0 && supplyIndex.mantissa > 0) {
            supplierIndex.mantissa = rewardInitialIndex;
        }

        Double memory deltaIndex = sub_(supplyIndex, supplierIndex);
        uint256 supplierTokens = CToken(cToken).balanceOf(supplier);
        uint256 supplierDelta = mul_(supplierTokens, deltaIndex);
        uint256 supplierAccrued = add_(
            rewardAccrued[rewardType][supplier],
            supplierDelta
        );
        rewardAccrued[rewardType][supplier] = supplierAccrued;
        emit DistributedSupplierReward(
            rewardType,
            CToken(cToken),
            supplier,
            supplierDelta,
            supplyIndex.mantissa
        );
    }

    /**
     * @notice Calculate JOE/AVAX accrued by a borrower and possibly transfer it to them
     * @param rewardType  0: JOE, 1: AVAX
     * @param cToken The market in which the borrower is interacting
     * @param borrower The address of the borrower to distribute JOE/AVAX to
     * @param marketBorrowIndex Current index of the borrow market
     */
    function distributeBorrowerReward(
        uint8 rewardType,
        address cToken,
        address borrower,
        Exp memory marketBorrowIndex
    ) internal {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        RewardMarketState storage borrowState = rewardBorrowState[rewardType][
            cToken
        ];
        Double memory borrowIndex = Double({mantissa: borrowState.index});
        Double memory borrowerIndex = Double({
            mantissa: rewardBorrowerIndex[rewardType][cToken][borrower]
        });
        rewardBorrowerIndex[rewardType][cToken][borrower] = borrowIndex
            .mantissa;

        if (borrowerIndex.mantissa == 0 && borrowIndex.mantissa >= rewardInitialIndex) {
            // Covers the case where users borrowed tokens before the market's borrow state index was set.
            // Rewards the user with COMP accrued from the start of when borrower rewards were first
            // set for the market.
            borrowerIndex.mantissa = rewardInitialIndex;
        }

        Double memory deltaIndex = sub_(borrowIndex, borrowerIndex);
        uint256 borrowerAmount = div_(
            CToken(cToken).borrowBalanceStored(borrower),
            marketBorrowIndex
        );
        uint256 borrowerDelta = mul_(borrowerAmount, deltaIndex);
        uint256 borrowerAccrued = add_(
            rewardAccrued[rewardType][borrower],
            borrowerDelta
        );
        rewardAccrued[rewardType][borrower] = borrowerAccrued;
        emit DistributedBorrowerReward(
            rewardType,
            CToken(cToken),
            borrower,
            borrowerDelta,
            borrowIndex.mantissa
        );
    }

    /**
     * @notice Refactored function to calc and rewards accounts supplier rewards
     * @param cToken The market to verify the mint against
     * @param supplier The supplier to be rewarded
     */
    function updateAndDistributeSupplierRewardsForToken(
        address cToken,
        address supplier
    ) external {
        require(
            adminOrInitializing(),
            "only admin can update and distribute supplier rewards"
        );
        for (
            uint8 rewardType = 0;
            rewardType < rewardAddresses.length;
            rewardType++
        ) {
            updateRewardSupplyIndex(rewardType, cToken);
            distributeSupplierReward(rewardType, cToken, supplier);
        }
    }

    /**
     * @notice Refactored function to calc and rewards accounts supplier rewards
     * @param cToken The market to verify the mint against
     * @param borrower Borrower to be rewarded
     * @param marketBorrowIndex Current index of the borrow market
     */
    function updateAndDistributeBorrowerRewardsForToken(
        address cToken,
        address borrower,
        Exp calldata marketBorrowIndex
    ) external {
        require(
            adminOrInitializing(),
            "only admin can update and distribute borrower rewards"
        );
        for (
            uint8 rewardType = 0;
            rewardType < rewardAddresses.length;
            rewardType++
        ) {
            updateRewardBorrowIndex(rewardType, cToken, marketBorrowIndex);
            distributeBorrowerReward(
                rewardType,
                cToken,
                borrower,
                marketBorrowIndex
            );
        }
    }

    /*** User functions ***/

    /**
     * @notice Claim all the JOE/AVAX accrued by holder in all markets
     * @param holder The address to claim JOE/AVAX for
     */
    function claimReward(uint8 rewardType, address payable holder) public {
        return claimReward(rewardType, holder, comptroller.getAllMarkets());
    }

    /**
     * @notice Claim all the JOE/AVAX accrued by holder in the specified markets
     * @param rewardType 0 = JOE, 1 = AVAX
     * @param holder The address to claim JOE/AVAX for
     * @param cTokens The list of markets to claim JOE/AVAX in
     */
    function claimReward(
        uint8 rewardType,
        address payable holder,
        CToken[] memory cTokens
    ) public {
        address payable[] memory holders = new address payable[](1);
        holders[0] = holder;
        claimReward(rewardType, holders, cTokens, true, true);
    }

    /**
     * @notice Claim all JOE/AVAX  accrued by the holders
     * @param rewardType  0 = JOE, 1 = AVAX
     * @param holders The addresses to claim JOE/AVAX for
     * @param cTokens The list of markets to claim JOE/AVAX in
     * @param borrowers Whether or not to claim JOE/AVAX earned by borrowing
     * @param suppliers Whether or not to claim JOE/AVAX earned by supplying
     */
    function claimReward(
        uint8 rewardType,
        address payable[] memory holders,
        CToken[] memory cTokens,
        bool borrowers,
        bool suppliers
    ) public payable {
        require(rewardType < rewardAddresses.length, "rewardType is invalid");
        for (uint256 i = 0; i < cTokens.length; i++) {
            CToken cToken = cTokens[i];
            require(
                comptroller.isMarketListed(address(cToken)),
                "market must be listed"
            );
            if (borrowers == true) {
                Exp memory borrowIndex = Exp({mantissa: cToken.borrowIndex()});
                updateRewardBorrowIndex(
                    rewardType,
                    address(cToken),
                    borrowIndex
                );
                for (uint256 j = 0; j < holders.length; j++) {
                    distributeBorrowerReward(
                        rewardType,
                        address(cToken),
                        holders[j],
                        borrowIndex
                    );
                    rewardAccrued[rewardType][holders[j]] = grantRewardInternal(
                        rewardType,
                        holders[j],
                        rewardAccrued[rewardType][holders[j]]
                    );
                }
            }
            if (suppliers == true) {
                updateRewardSupplyIndex(rewardType, address(cToken));
                for (uint256 j = 0; j < holders.length; j++) {
                    distributeSupplierReward(
                        rewardType,
                        address(cToken),
                        holders[j]
                    );
                    rewardAccrued[rewardType][holders[j]] = grantRewardInternal(
                        rewardType,
                        holders[j],
                        rewardAccrued[rewardType][holders[j]]
                    );
                }
            }
        }
    }

    /**
     * @notice Transfer JOE/AVAX to the user
     * @dev Note: If there is not enough JOE/AVAX, we do not perform the transfer all.
     * @param rewardType 0 = JOE, 1 = AVAX.
     * @param user The address of the user to transfer JOE/AVAX to
     * @param amount The amount of JOE/AVAX to (possibly) transfer
     * @return The amount of JOE/AVAX which was NOT transferred to the user
     */
    function grantRewardInternal(
        uint8 rewardType,
        address payable user,
        uint256 amount
    ) internal returns (uint256) {
        address rewardAddress = rewardAddresses[rewardType];
        EIP20Interface reward = EIP20Interface(rewardAddress);
        uint256 rewardRemaining = reward.balanceOf(address(this));
        if (amount > 0 && amount <= rewardRemaining) {
            reward.transfer(user, amount);
            return 0;
        }

        return amount;
    }

    /*** Joe Distribution Admin ***/

    /**
     * @notice Transfer JOE to the recipient
     * @dev Note: If there is not enough JOE, we do not perform the transfer all.
     * @param rewardType 0 = JOE, 1 = AVAX
     * @param recipient The address of the recipient to transfer JOE to
     * @param amount The amount of JOE to (possibly) transfer
     */
    function _grantReward(
        uint8 rewardType,
        address payable recipient,
        uint256 amount
    ) public {
        require(adminOrInitializing(), "only admin can grant reward");
        uint256 amountLeft = grantRewardInternal(rewardType, recipient, amount);
        require(amountLeft == 0, "insufficient reward for grant");
        emit RewardGranted(rewardType, recipient, amount);
    }

    /**
     * @notice Set the Reward token address
     */
    function addRewardAddress(address newRewardAddress) public {
        require(msg.sender == admin, "only admin can add new reward address");
        rewardAddresses.push(newRewardAddress);
        uint8 rewardType = uint8(rewardAddresses.length - 1);
        emit RewardAdded(rewardType, newRewardAddress);
    }

    /**
     * @notice Set the Reward token address
     */
    function getRewardAddress(uint256 rewardType)
        public
        view
        returns (address)
    {
        return rewardAddresses[rewardType];
    }

    /**
     * @notice Set the Reward token address
     */
    function setRewardAddress(uint8 rewardType, address newRewardAddress)
        public
    {
        require(msg.sender == admin, "only admin can set reward address");
        address oldRewardAddress = rewardAddresses[rewardType];
        rewardAddresses[rewardType] = newRewardAddress;
        emit RewardAddressChanged(
            rewardType,
            oldRewardAddress,
            newRewardAddress
        );
    }

    /**
     * @notice Set the Comptroller address
     */
    function setComptroller(address _comptroller) public {
        require(msg.sender == admin, "only admin can set Comptroller");
        comptroller = Comptroller(_comptroller);
    }

    /**
     * @notice Set the admin
     */
    function setAdmin(address _newAdmin) public {
        require(msg.sender == admin, "only admin can set admin");
        admin = _newAdmin;
    }

    /**
     * @notice payable function needed to receive AVAX
     */
    function() external payable {}

    function getBlockTimestamp() public view returns (uint256) {
        return block.timestamp;
    }
}

File 15 of 15 : Unitroller.sol
pragma solidity ^0.5.16;

import "./ErrorReporter.sol";
import "./ComptrollerStorage.sol";
/**
 * @title ComptrollerCore
 * @dev Storage for the comptroller is at this address, while execution is delegated to the `comptrollerImplementation`.
 * CTokens should reference this contract as their comptroller.
 */
contract Unitroller is UnitrollerAdminStorage, ComptrollerErrorReporter {

    /**
      * @notice Emitted when pendingComptrollerImplementation is changed
      */
    event NewPendingImplementation(address oldPendingImplementation, address newPendingImplementation);

    /**
      * @notice Emitted when pendingComptrollerImplementation is accepted, which means comptroller implementation is updated
      */
    event NewImplementation(address oldImplementation, address newImplementation);

    /**
      * @notice Emitted when pendingAdmin is changed
      */
    event NewPendingAdmin(address oldPendingAdmin, address newPendingAdmin);

    /**
      * @notice Emitted when pendingAdmin is accepted, which means admin is updated
      */
    event NewAdmin(address oldAdmin, address newAdmin);

    constructor() public {
        // Set admin to caller
        admin = msg.sender;
    }

    /*** Admin Functions ***/
    function _setPendingImplementation(address newPendingImplementation) public returns (uint) {

        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_PENDING_IMPLEMENTATION_OWNER_CHECK);
        }

        address oldPendingImplementation = pendingComptrollerImplementation;

        pendingComptrollerImplementation = newPendingImplementation;

        emit NewPendingImplementation(oldPendingImplementation, pendingComptrollerImplementation);

        return uint(Error.NO_ERROR);
    }

    /**
    * @notice Accepts new implementation of comptroller. msg.sender must be pendingImplementation
    * @dev Admin function for new implementation to accept it's role as implementation
    * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
    */
    function _acceptImplementation() public returns (uint) {
        // Check caller is pendingImplementation and pendingImplementation ≠ address(0)
        if (msg.sender != pendingComptrollerImplementation || pendingComptrollerImplementation == address(0)) {
            return fail(Error.UNAUTHORIZED, FailureInfo.ACCEPT_PENDING_IMPLEMENTATION_ADDRESS_CHECK);
        }

        // Save current values for inclusion in log
        address oldImplementation = comptrollerImplementation;
        address oldPendingImplementation = pendingComptrollerImplementation;

        comptrollerImplementation = pendingComptrollerImplementation;

        pendingComptrollerImplementation = address(0);

        emit NewImplementation(oldImplementation, comptrollerImplementation);
        emit NewPendingImplementation(oldPendingImplementation, pendingComptrollerImplementation);

        return uint(Error.NO_ERROR);
    }


    /**
      * @notice Begins transfer of admin rights. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
      * @dev Admin function to begin change of admin. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
      * @param newPendingAdmin New pending admin.
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _setPendingAdmin(address newPendingAdmin) public returns (uint) {
        // Check caller = admin
        if (msg.sender != admin) {
            return fail(Error.UNAUTHORIZED, FailureInfo.SET_PENDING_ADMIN_OWNER_CHECK);
        }

        // Save current value, if any, for inclusion in log
        address oldPendingAdmin = pendingAdmin;

        // Store pendingAdmin with value newPendingAdmin
        pendingAdmin = newPendingAdmin;

        // Emit NewPendingAdmin(oldPendingAdmin, newPendingAdmin)
        emit NewPendingAdmin(oldPendingAdmin, newPendingAdmin);

        return uint(Error.NO_ERROR);
    }

    /**
      * @notice Accepts transfer of admin rights. msg.sender must be pendingAdmin
      * @dev Admin function for pending admin to accept role and update admin
      * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
      */
    function _acceptAdmin() public returns (uint) {
        // Check caller is pendingAdmin and pendingAdmin ≠ address(0)
        if (msg.sender != pendingAdmin || msg.sender == address(0)) {
            return fail(Error.UNAUTHORIZED, FailureInfo.ACCEPT_ADMIN_PENDING_ADMIN_CHECK);
        }

        // Save current values for inclusion in log
        address oldAdmin = admin;
        address oldPendingAdmin = pendingAdmin;

        // Store admin with value pendingAdmin
        admin = pendingAdmin;

        // Clear the pending value
        pendingAdmin = address(0);

        emit NewAdmin(oldAdmin, admin);
        emit NewPendingAdmin(oldPendingAdmin, pendingAdmin);

        return uint(Error.NO_ERROR);
    }

    /**
     * @dev Delegates execution to an implementation contract.
     * It returns to the external caller whatever the implementation returns
     * or forwards reverts.
     */
    function () payable external {
        // delegate all other functions to current implementation
        (bool success, ) = comptrollerImplementation.delegatecall(msg.data);

        assembly {
              let free_mem_ptr := mload(0x40)
              returndatacopy(free_mem_ptr, 0, returndatasize)

              switch success
              case 0 { revert(free_mem_ptr, returndatasize) }
              default { return(free_mem_ptr, returndatasize) }
        }
    }
}

Settings
{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract ABI

[{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":true,"internalType":"contract CToken","name":"cToken","type":"address"},{"indexed":true,"internalType":"address","name":"borrower","type":"address"},{"indexed":false,"internalType":"uint256","name":"rewardDelta","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardBorrowIndex","type":"uint256"}],"name":"DistributedBorrowerReward","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":true,"internalType":"contract CToken","name":"cToken","type":"address"},{"indexed":true,"internalType":"address","name":"supplier","type":"address"},{"indexed":false,"internalType":"uint256","name":"rewardDelta","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardSupplyIndex","type":"uint256"}],"name":"DistributedSupplierReward","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":false,"internalType":"address","name":"newRewardAddress","type":"address"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":false,"internalType":"address","name":"oldRewardAddress","type":"address"},{"indexed":false,"internalType":"address","name":"newRewardAddress","type":"address"}],"name":"RewardAddressChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":true,"internalType":"contract CToken","name":"cToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"newSpeed","type":"uint256"}],"name":"RewardBorrowSpeedUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RewardGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"rewardType","type":"uint8"},{"indexed":true,"internalType":"contract CToken","name":"cToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"newSpeed","type":"uint256"}],"name":"RewardSupplySpeedUpdated","type":"event"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"address payable","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"_grantReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"contract CToken","name":"cToken","type":"address"},{"internalType":"uint256","name":"rewardSupplySpeed","type":"uint256"},{"internalType":"uint256","name":"rewardBorrowSpeed","type":"uint256"}],"name":"_setRewardSpeed","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newRewardAddress","type":"address"}],"name":"addRewardAddress","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"address payable","name":"holder","type":"address"}],"name":"claimReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"address payable","name":"holder","type":"address"},{"internalType":"contract CToken[]","name":"cTokens","type":"address[]"}],"name":"claimReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"address payable[]","name":"holders","type":"address[]"},{"internalType":"contract CToken[]","name":"cTokens","type":"address[]"},{"internalType":"bool","name":"borrowers","type":"bool"},{"internalType":"bool","name":"suppliers","type":"bool"}],"name":"claimReward","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"comptroller","outputs":[{"internalType":"contract Comptroller","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getBlockTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"rewardType","type":"uint256"}],"name":"getRewardAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"initialize","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"}],"name":"rewardAccrued","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardAddresses","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"}],"name":"rewardBorrowSpeeds","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"}],"name":"rewardBorrowState","outputs":[{"internalType":"uint224","name":"index","type":"uint224"},{"internalType":"uint32","name":"timestamp","type":"uint32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"rewardBorrowerIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rewardInitialIndex","outputs":[{"internalType":"uint224","name":"","type":"uint224"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"rewardSupplierIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"}],"name":"rewardSupplySpeeds","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"}],"name":"rewardSupplyState","outputs":[{"internalType":"uint224","name":"index","type":"uint224"},{"internalType":"uint32","name":"timestamp","type":"uint32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_newAdmin","type":"address"}],"name":"setAdmin","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_comptroller","type":"address"}],"name":"setComptroller","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint8","name":"rewardType","type":"uint8"},{"internalType":"address","name":"newRewardAddress","type":"address"}],"name":"setRewardAddress","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"cToken","type":"address"},{"internalType":"address","name":"borrower","type":"address"},{"components":[{"internalType":"uint256","name":"mantissa","type":"uint256"}],"internalType":"struct ExponentialNoError.Exp","name":"marketBorrowIndex","type":"tuple"}],"name":"updateAndDistributeBorrowerRewardsForToken","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"cToken","type":"address"},{"internalType":"address","name":"supplier","type":"address"}],"name":"updateAndDistributeSupplierRewardsForToken","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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

Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.