mirror of
https://github.com/Instadapp/aave-protocol-v2.git
synced 2024-07-29 21:47:30 +00:00
Merge branch 'fix/23' into 'master'
Resolve "FlashLoans V2" Closes #23 See merge request aave-tech/protocol-v2!30
This commit is contained in:
The-3D
commit
c9727646d4
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@ -12,27 +12,12 @@ abstract contract FlashLoanReceiverBase is IFlashLoanReceiver {
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using SafeERC20 for IERC20;
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using SafeMath for uint256;
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ILendingPoolAddressesProvider public addressesProvider;
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ILendingPoolAddressesProvider internal _addressesProvider;
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constructor(ILendingPoolAddressesProvider provider) public {
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addressesProvider = provider;
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_addressesProvider = provider;
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}
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receive() external payable {}
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function _transferFundsBack(
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address reserve,
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address destination,
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uint256 amount
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) internal {
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transferInternal(destination, reserve, amount);
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}
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function transferInternal(
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address destination,
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address reserve,
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uint256 amount
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) internal {
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IERC20(reserve).safeTransfer(destination, amount);
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}
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}
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@ -10,7 +10,6 @@ pragma solidity ^0.6.8;
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interface IFlashLoanReceiver {
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function executeOperation(
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address reserve,
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address destination,
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uint256 amount,
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uint256 fee,
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bytes calldata params
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@ -63,7 +63,7 @@ interface ILendingPool {
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* @param reserve the address of the reserve
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* @param user the address of the user executing the swap
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**/
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event Swap(address indexed reserve, address indexed user, uint256 timestamp);
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event Swap(address indexed reserve, address indexed user);
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/**
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* @dev emitted when a user enables a reserve as collateral
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@ -90,13 +90,15 @@ interface ILendingPool {
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* @param target the address of the flashLoanReceiver
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* @param reserve the address of the reserve
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* @param amount the amount requested
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* @param totalFee the total fee on the amount
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* @param totalPremium the total fee on the amount
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* @param referralCode the referral code of the caller
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**/
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event FlashLoan(
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address indexed target,
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address indexed reserve,
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uint256 amount,
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uint256 totalFee
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uint256 totalPremium,
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uint16 referralCode
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);
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/**
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* @dev these events are not emitted directly by the LendingPool
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@ -105,21 +107,6 @@ interface ILendingPool {
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* This allows to have the events in the generated ABI for LendingPool.
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**/
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/**
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* @dev emitted when a borrow fee is liquidated
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* @param collateral the address of the collateral being liquidated
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* @param reserve the address of the reserve
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* @param user the address of the user being liquidated
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* @param feeLiquidated the total fee liquidated
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* @param liquidatedCollateralForFee the amount of collateral received by the protocol in exchange for the fee
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**/
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event OriginationFeeLiquidated(
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address indexed collateral,
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address indexed reserve,
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address indexed user,
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uint256 feeLiquidated,
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uint256 liquidatedCollateralForFee
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);
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/**
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* @dev emitted when a borrower is liquidated
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* @param collateral the address of the collateral being liquidated
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@ -238,12 +225,16 @@ interface ILendingPool {
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* @param receiver The address of the contract receiving the funds. The receiver should implement the IFlashLoanReceiver interface.
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* @param reserve the address of the principal reserve
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* @param amount the amount requested for this flashloan
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* @param params a bytes array to be sent to the flashloan executor
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* @param referralCode the referral code of the caller
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**/
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function flashLoan(
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address receiver,
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address reserve,
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uint256 amount,
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bytes calldata params
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uint256 debtType,
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bytes calldata params,
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uint16 referralCode
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) external;
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/**
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@ -3,7 +3,6 @@ pragma solidity ^0.6.8;
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pragma experimental ABIEncoderV2;
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import {SafeMath} from '@openzeppelin/contracts/math/SafeMath.sol';
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import {ReentrancyGuard} from '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
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import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
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import {
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VersionedInitializable
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@ -32,7 +31,7 @@ import {ILendingPool} from '../interfaces/ILendingPool.sol';
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* @author Aave
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**/
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contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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contract LendingPool is VersionedInitializable, ILendingPool {
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using SafeMath for uint256;
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using WadRayMath for uint256;
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using ReserveLogic for ReserveLogic.ReserveData;
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@ -43,7 +42,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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//main configuration parameters
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uint256 public constant REBALANCE_DOWN_RATE_DELTA = (1e27) / 5;
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uint256 public constant MAX_STABLE_RATE_BORROW_SIZE_PERCENT = 25;
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uint256 public constant FLASHLOAN_FEE_TOTAL = 9;
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uint256 public constant FLASHLOAN_PREMIUM_TOTAL = 9;
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ILendingPoolAddressesProvider internal _addressesProvider;
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@ -91,7 +90,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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address asset,
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uint256 amount,
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uint16 referralCode
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) external override nonReentrant {
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) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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ValidationLogic.validateDeposit(reserve, amount);
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@ -112,7 +111,6 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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//transfer to the aToken contract
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IERC20(asset).safeTransferFrom(msg.sender, aToken, amount);
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//solium-disable-next-line
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emit Deposit(asset, msg.sender, amount, referralCode);
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}
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@ -121,7 +119,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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* @param asset the address of the reserve
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* @param amount the underlying amount to be redeemed
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**/
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function withdraw(address asset, uint256 amount) external override nonReentrant {
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function withdraw(address asset, uint256 amount) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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address aToken = reserve.aTokenAddress;
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@ -156,7 +154,6 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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IAToken(aToken).burn(msg.sender, msg.sender, amountToWithdraw);
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//solium-disable-next-line
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emit Withdraw(asset, msg.sender, amount);
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}
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@ -166,65 +163,24 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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* @param asset the address of the reserve
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* @param amount the amount to be borrowed
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* @param interestRateMode the interest rate mode at which the user wants to borrow. Can be 0 (STABLE) or 1 (VARIABLE)
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* @param referralCode a referral code for integrators
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**/
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function borrow(
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address asset,
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uint256 amount,
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uint256 interestRateMode,
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uint16 referralCode
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) external override nonReentrant {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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UserConfiguration.Map storage userConfig = _usersConfig[msg.sender];
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uint256 amountInETH = IPriceOracleGetter(_addressesProvider.getPriceOracle())
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.getAssetPrice(asset)
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.mul(amount)
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.div(10**reserve.configuration.getDecimals()); //price is in ether
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ValidationLogic.validateBorrow(
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reserve,
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asset,
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amount,
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amountInETH,
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interestRateMode,
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MAX_STABLE_RATE_BORROW_SIZE_PERCENT,
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_reserves,
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_usersConfig[msg.sender],
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_reservesList,
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_addressesProvider.getPriceOracle()
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);
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//caching the current stable borrow rate
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uint256 userStableRate = reserve.currentStableBorrowRate;
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reserve.updateCumulativeIndexesAndTimestamp();
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if (ReserveLogic.InterestRateMode(interestRateMode) == ReserveLogic.InterestRateMode.STABLE) {
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IStableDebtToken(reserve.stableDebtTokenAddress).mint(msg.sender, amount, userStableRate);
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} else {
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IVariableDebtToken(reserve.variableDebtTokenAddress).mint(msg.sender, amount);
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}
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address aToken = reserve.aTokenAddress;
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reserve.updateInterestRates(asset, aToken, 0, amount);
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uint256 reserveIndex = reserve.index;
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if (!userConfig.isBorrowing(reserveIndex)) {
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userConfig.setBorrowing(reserveIndex, true);
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}
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//if we reached this point, we can transfer
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IAToken(aToken).transferUnderlyingTo(msg.sender, amount);
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emit Borrow(
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asset,
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msg.sender,
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amount,
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interestRateMode,
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ReserveLogic.InterestRateMode(interestRateMode) == ReserveLogic.InterestRateMode.STABLE
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? userStableRate
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: reserve.currentVariableBorrowRate,
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referralCode
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) external override {
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_executeBorrow(
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ExecuteBorrowParams(
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asset,
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msg.sender,
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amount,
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interestRateMode,
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_reserves[asset].aTokenAddress,
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referralCode,
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true
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)
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);
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}
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@ -241,7 +197,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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uint256 amount,
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uint256 rateMode,
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address onBehalfOf
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) external override nonReentrant {
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) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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(uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt(onBehalfOf, reserve);
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@ -292,7 +248,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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* @param asset the address of the reserve on which the user borrowed
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* @param rateMode the rate mode that the user wants to swap
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**/
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function swapBorrowRateMode(address asset, uint256 rateMode) external override nonReentrant {
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function swapBorrowRateMode(address asset, uint256 rateMode) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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(uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt(msg.sender, reserve);
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@ -325,12 +281,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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reserve.updateInterestRates(asset, reserve.aTokenAddress, 0, 0);
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emit Swap(
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asset,
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msg.sender,
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//solium-disable-next-line
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block.timestamp
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);
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emit Swap(asset, msg.sender);
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}
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/**
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@ -340,7 +291,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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* @param asset the address of the reserve
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* @param user the address of the user to be rebalanced
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**/
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function rebalanceStableBorrowRate(address asset, address user) external override nonReentrant {
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function rebalanceStableBorrowRate(address asset, address user) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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IStableDebtToken stableDebtToken = IStableDebtToken(reserve.stableDebtTokenAddress);
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@ -385,11 +336,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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* @param asset the address of the reserve
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* @param useAsCollateral true if the user wants to user the deposit as collateral, false otherwise.
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**/
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function setUserUseReserveAsCollateral(address asset, bool useAsCollateral)
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external
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override
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nonReentrant
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{
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function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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ValidationLogic.validateSetUseReserveAsCollateral(
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@ -425,7 +372,7 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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address user,
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uint256 purchaseAmount,
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bool receiveAToken
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) external override nonReentrant {
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) external override {
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address liquidationManager = _addressesProvider.getLendingPoolLiquidationManager();
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//solium-disable-next-line
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@ -449,65 +396,83 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
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}
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}
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struct FlashLoanLocalVars {
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uint256 premium;
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uint256 amountPlusPremium;
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uint256 amountPlusPremiumInETH;
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uint256 receiverBalance;
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uint256 receiverAllowance;
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uint256 availableBalance;
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uint256 assetPrice;
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IFlashLoanReceiver receiver;
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address aTokenAddress;
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address oracle;
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}
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/**
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* @dev allows smartcontracts to access the liquidity of the pool within one transaction,
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* @dev allows smart contracts to access the liquidity of the pool within one transaction,
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* as long as the amount taken plus a fee is returned. NOTE There are security concerns for developers of flashloan receiver contracts
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* that must be kept into consideration. For further details please visit https://developers.aave.com
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* @param receiverAddress The address of the contract receiving the funds. The receiver should implement the IFlashLoanReceiver interface.
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* @param asset the address of the principal reserve
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* @param amount the amount requested for this flashloan
|
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* @param asset The address of the principal reserve
|
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* @param amount The amount requested for this flashloan
|
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* @param mode Type of the debt to open if the flash loan is not returned. 0 -> Don't open any debt, just revert, 1 -> stable, 2 -> variable
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* @param params Variadic packed params to pass to the receiver as extra information
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* @param referralCode Referral code of the flash loan
|
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**/
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function flashLoan(
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address receiverAddress,
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address asset,
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uint256 amount,
|
||||
bytes calldata params
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||||
) external override nonReentrant {
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uint256 mode,
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bytes calldata params,
|
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uint16 referralCode
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) external override {
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ReserveLogic.ReserveData storage reserve = _reserves[asset];
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FlashLoanLocalVars memory vars;
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address aTokenAddress = reserve.aTokenAddress;
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vars.aTokenAddress = reserve.aTokenAddress;
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|
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//check that the reserve has enough available liquidity
|
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uint256 availableLiquidityBefore = IERC20(asset).balanceOf(aTokenAddress);
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vars.premium = amount.mul(FLASHLOAN_PREMIUM_TOTAL).div(10000);
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//calculate amount fee
|
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uint256 amountFee = amount.mul(FLASHLOAN_FEE_TOTAL).div(10000);
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ValidationLogic.validateFlashloan(mode, vars.premium);
|
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|
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require(availableLiquidityBefore >= amount, Errors.NOT_ENOUGH_LIQUIDITY_TO_BORROW);
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require(amountFee > 0, Errors.REQUESTED_AMOUNT_TOO_SMALL);
|
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ReserveLogic.InterestRateMode debtMode = ReserveLogic.InterestRateMode(mode);
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|
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//get the FlashLoanReceiver instance
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IFlashLoanReceiver receiver = IFlashLoanReceiver(receiverAddress);
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vars.receiver = IFlashLoanReceiver(receiverAddress);
|
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|
||||
//transfer funds to the receiver
|
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IAToken(aTokenAddress).transferUnderlyingTo(receiverAddress, amount);
|
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IAToken(vars.aTokenAddress).transferUnderlyingTo(receiverAddress, amount);
|
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|
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//execute action of the receiver
|
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receiver.executeOperation(asset, aTokenAddress, amount, amountFee, params);
|
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vars.receiver.executeOperation(asset, amount, vars.premium, params);
|
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|
||||
//check that the actual balance of the core contract includes the returned amount
|
||||
uint256 availableLiquidityAfter = IERC20(asset).balanceOf(aTokenAddress);
|
||||
vars.amountPlusPremium = amount.add(vars.premium);
|
||||
|
||||
require(
|
||||
availableLiquidityAfter == availableLiquidityBefore.add(amountFee),
|
||||
Errors.INCONSISTENT_PROTOCOL_ACTUAL_BALANCE
|
||||
);
|
||||
if (debtMode == ReserveLogic.InterestRateMode.NONE) {
|
||||
|
||||
IERC20(asset).transferFrom(receiverAddress, vars.aTokenAddress, vars.amountPlusPremium);
|
||||
|
||||
reserve.updateCumulativeIndexesAndTimestamp();
|
||||
reserve.cumulateToLiquidityIndex(IERC20(vars.aTokenAddress).totalSupply(), vars.premium);
|
||||
reserve.updateInterestRates(asset, vars.aTokenAddress, vars.premium, 0);
|
||||
|
||||
emit FlashLoan(receiverAddress, asset, amount, vars.premium, referralCode);
|
||||
|
||||
//compounding the cumulated interest
|
||||
reserve.updateCumulativeIndexesAndTimestamp();
|
||||
|
||||
uint256 totalLiquidityBefore = availableLiquidityBefore
|
||||
.add(IERC20(reserve.variableDebtTokenAddress).totalSupply())
|
||||
.add(IERC20(reserve.stableDebtTokenAddress).totalSupply());
|
||||
|
||||
//compounding the received fee into the reserve
|
||||
reserve.cumulateToLiquidityIndex(totalLiquidityBefore, amountFee);
|
||||
|
||||
//refresh interest rates
|
||||
reserve.updateInterestRates(asset, aTokenAddress, amountFee, 0);
|
||||
|
||||
//solium-disable-next-line
|
||||
emit FlashLoan(receiverAddress, asset, amount, amountFee);
|
||||
} else {
|
||||
// If the transfer didn't succeed, the receiver either didn't return the funds, or didn't approve the transfer.
|
||||
_executeBorrow(
|
||||
ExecuteBorrowParams(
|
||||
asset,
|
||||
msg.sender,
|
||||
vars.amountPlusPremium.sub(vars.availableBalance),
|
||||
mode,
|
||||
vars.aTokenAddress,
|
||||
referralCode,
|
||||
false
|
||||
)
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -724,9 +689,89 @@ contract LendingPool is ReentrancyGuard, VersionedInitializable, ILendingPool {
|
|||
return _reserves[asset].configuration;
|
||||
}
|
||||
|
||||
// internal functions
|
||||
|
||||
struct ExecuteBorrowParams {
|
||||
address asset;
|
||||
address user;
|
||||
uint256 amount;
|
||||
uint256 interestRateMode;
|
||||
address aTokenAddress;
|
||||
uint16 referralCode;
|
||||
bool releaseUnderlying;
|
||||
}
|
||||
|
||||
/**
|
||||
* @notice internal functions
|
||||
* @dev Internal function to execute a borrowing action, allowing to transfer or not the underlying
|
||||
* @param vars Input struct for the borrowing action, in order to avoid STD errors
|
||||
**/
|
||||
function _executeBorrow(ExecuteBorrowParams memory vars) internal {
|
||||
ReserveLogic.ReserveData storage reserve = _reserves[vars.asset];
|
||||
UserConfiguration.Map storage userConfig = _usersConfig[msg.sender];
|
||||
|
||||
address oracle = _addressesProvider.getPriceOracle();
|
||||
|
||||
uint256 amountInETH = IPriceOracleGetter(oracle).getAssetPrice(vars.asset).mul(vars.amount).div(
|
||||
10**reserve.configuration.getDecimals()
|
||||
);
|
||||
|
||||
ValidationLogic.validateBorrow(
|
||||
reserve,
|
||||
vars.asset,
|
||||
vars.amount,
|
||||
amountInETH,
|
||||
vars.interestRateMode,
|
||||
MAX_STABLE_RATE_BORROW_SIZE_PERCENT,
|
||||
_reserves,
|
||||
userConfig,
|
||||
_reservesList,
|
||||
oracle
|
||||
);
|
||||
|
||||
|
||||
uint256 reserveIndex = reserve.index;
|
||||
if (!userConfig.isBorrowing(reserveIndex)) {
|
||||
userConfig.setBorrowing(reserveIndex, true);
|
||||
}
|
||||
|
||||
|
||||
reserve.updateCumulativeIndexesAndTimestamp();
|
||||
|
||||
//caching the current stable borrow rate
|
||||
uint256 currentStableRate = 0;
|
||||
|
||||
if (
|
||||
ReserveLogic.InterestRateMode(vars.interestRateMode) == ReserveLogic.InterestRateMode.STABLE
|
||||
) {
|
||||
currentStableRate = reserve.currentStableBorrowRate;
|
||||
|
||||
IStableDebtToken(reserve.stableDebtTokenAddress).mint(
|
||||
vars.user,
|
||||
vars.amount,
|
||||
currentStableRate
|
||||
);
|
||||
} else {
|
||||
IVariableDebtToken(reserve.variableDebtTokenAddress).mint(vars.user, vars.amount);
|
||||
}
|
||||
|
||||
reserve.updateInterestRates(vars.asset, vars.aTokenAddress, 0, vars.releaseUnderlying ? vars.amount : 0);
|
||||
|
||||
if(vars.releaseUnderlying){
|
||||
IAToken(vars.aTokenAddress).transferUnderlyingTo(msg.sender, vars.amount);
|
||||
}
|
||||
|
||||
|
||||
emit Borrow(
|
||||
vars.asset,
|
||||
msg.sender,
|
||||
vars.amount,
|
||||
vars.interestRateMode,
|
||||
ReserveLogic.InterestRateMode(vars.interestRateMode) == ReserveLogic.InterestRateMode.STABLE
|
||||
? currentStableRate
|
||||
: reserve.currentVariableBorrowRate,
|
||||
vars.referralCode
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* @dev adds a reserve to the array of the _reserves address
|
||||
|
|
|
|||
|
|
@ -3,8 +3,6 @@ pragma solidity ^0.6.8;
|
|||
|
||||
import {SafeMath} from '@openzeppelin/contracts/math/SafeMath.sol';
|
||||
import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
|
||||
import {ReentrancyGuard} from '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
|
||||
import {ReentrancyGuard} from '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
|
||||
import {
|
||||
VersionedInitializable
|
||||
} from '../libraries/openzeppelin-upgradeability/VersionedInitializable.sol';
|
||||
|
|
@ -28,7 +26,7 @@ import {Errors} from '../libraries/helpers/Errors.sol';
|
|||
* @author Aave
|
||||
* @notice Implements the liquidation function.
|
||||
**/
|
||||
contract LendingPoolLiquidationManager is ReentrancyGuard, VersionedInitializable {
|
||||
contract LendingPoolLiquidationManager is VersionedInitializable {
|
||||
using SafeERC20 for IERC20;
|
||||
using SafeMath for uint256;
|
||||
using WadRayMath for uint256;
|
||||
|
|
|
|||
|
|
@ -62,4 +62,5 @@ library Errors {
|
|||
string public constant SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = '40'; // 'User did not borrow the specified currency'
|
||||
string public constant NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE = '41'; // "There isn't enough liquidity available to liquidate"
|
||||
string public constant NO_ERRORS = '42'; // 'No errors'
|
||||
string public constant INVALID_FLASHLOAN_MODE = '43'; //Invalid flashloan mode selected
|
||||
}
|
||||
|
|
|
|||
|
|
@ -60,10 +60,6 @@ library ValidationLogic {
|
|||
) external view {
|
||||
require(amount > 0, Errors.AMOUNT_NOT_GREATER_THAN_0);
|
||||
|
||||
uint256 currentAvailableLiquidity = IERC20(reserveAddress).balanceOf(address(aTokenAddress));
|
||||
|
||||
require(currentAvailableLiquidity >= amount, Errors.CURRENT_AVAILABLE_LIQUIDITY_NOT_ENOUGH);
|
||||
|
||||
require(amount <= userBalance, Errors.NOT_ENOUGH_AVAILABLE_USER_BALANCE);
|
||||
|
||||
require(
|
||||
|
|
@ -148,11 +144,6 @@ library ValidationLogic {
|
|||
Errors.INVALID_INTEREST_RATE_MODE_SELECTED
|
||||
);
|
||||
|
||||
//check that the amount is available in the reserve
|
||||
vars.availableLiquidity = IERC20(reserveAddress).balanceOf(address(reserve.aTokenAddress));
|
||||
|
||||
require(vars.availableLiquidity >= amount, Errors.CURRENT_AVAILABLE_LIQUIDITY_NOT_ENOUGH);
|
||||
|
||||
(
|
||||
vars.userCollateralBalanceETH,
|
||||
vars.userBorrowBalanceETH,
|
||||
|
|
@ -328,4 +319,14 @@ library ValidationLogic {
|
|||
Errors.DEPOSIT_ALREADY_IN_USE
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* @dev validates a flashloan action
|
||||
* @param mode the flashloan mode (0 = classic flashloan, 1 = open a stable rate loan, 2 = open a variable rate loan)
|
||||
* @param premium the premium paid on the flashloan
|
||||
**/
|
||||
function validateFlashloan(uint256 mode, uint256 premium) internal pure {
|
||||
require(premium > 0, Errors.REQUESTED_AMOUNT_TOO_SMALL);
|
||||
require(mode <= uint256(ReserveLogic.InterestRateMode.VARIABLE), Errors.INVALID_FLASHLOAN_MODE);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -13,46 +13,54 @@ contract MockFlashLoanReceiver is FlashLoanReceiverBase {
|
|||
using SafeMath for uint256;
|
||||
using SafeERC20 for IERC20;
|
||||
|
||||
ILendingPoolAddressesProvider internal _provider;
|
||||
|
||||
event ExecutedWithFail(address _reserve, uint256 _amount, uint256 _fee);
|
||||
event ExecutedWithSuccess(address _reserve, uint256 _amount, uint256 _fee);
|
||||
|
||||
bool failExecution = false;
|
||||
bool _failExecution;
|
||||
uint256 _amountToApprove;
|
||||
|
||||
constructor(ILendingPoolAddressesProvider _provider) public FlashLoanReceiverBase(_provider) {}
|
||||
constructor(ILendingPoolAddressesProvider provider) public FlashLoanReceiverBase(provider) {}
|
||||
|
||||
function setFailExecutionTransfer(bool _fail) public {
|
||||
failExecution = _fail;
|
||||
function setFailExecutionTransfer(bool fail) public {
|
||||
_failExecution = fail;
|
||||
}
|
||||
|
||||
function setAmountToApprove(uint256 amountToApprove) public {
|
||||
_amountToApprove = amountToApprove;
|
||||
}
|
||||
|
||||
function amountToApprove() public view returns (uint256) {
|
||||
return _amountToApprove;
|
||||
}
|
||||
|
||||
function executeOperation(
|
||||
address _reserve,
|
||||
address _destination,
|
||||
uint256 _amount,
|
||||
uint256 _fee,
|
||||
bytes memory _params
|
||||
address reserve,
|
||||
uint256 amount,
|
||||
uint256 fee,
|
||||
bytes memory params
|
||||
) public override {
|
||||
//mint to this contract the specific amount
|
||||
MintableERC20 token = MintableERC20(_reserve);
|
||||
MintableERC20 token = MintableERC20(reserve);
|
||||
|
||||
//check the contract has the specified balance
|
||||
require(
|
||||
_amount <= IERC20(_reserve).balanceOf(address(this)),
|
||||
'Invalid balance for the contract'
|
||||
);
|
||||
require(amount <= IERC20(reserve).balanceOf(address(this)), 'Invalid balance for the contract');
|
||||
|
||||
if (failExecution) {
|
||||
emit ExecutedWithFail(_reserve, _amount, _fee);
|
||||
uint256 amountToReturn = (_amountToApprove != 0) ? _amountToApprove : amount.add(fee);
|
||||
|
||||
if (_failExecution) {
|
||||
emit ExecutedWithFail(reserve, amount, fee);
|
||||
return;
|
||||
}
|
||||
|
||||
//execution does not fail - mint tokens and return them to the _destination
|
||||
//note: if the reserve is eth, the mock contract must receive at least _fee ETH before calling executeOperation
|
||||
|
||||
token.mint(_fee);
|
||||
token.mint(fee);
|
||||
|
||||
//returning amount + fee to the destination
|
||||
_transferFundsBack(_reserve, _destination, _amount.add(_fee));
|
||||
IERC20(reserve).approve(_addressesProvider.getLendingPool(), amountToReturn);
|
||||
|
||||
emit ExecutedWithSuccess(_reserve, _amount, _fee);
|
||||
emit ExecutedWithSuccess(reserve, amount, fee);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x58F132FBB86E21545A4Bace3C19f1C05d86d7A22",
|
||||
"address": "0xf8c6eB390cDc5C08717bC2268aa0c1169A9B5deE",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -15,7 +15,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xa4bcDF64Cdd5451b6ac3743B414124A6299B65FF",
|
||||
"address": "0x4a716924Dad0c0d0E558844F304548814e7089F1",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -25,7 +25,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x5A0773Ff307Bf7C71a832dBB5312237fD3437f9F",
|
||||
"address": "0x798c5b4b62b1eA9D64955D6751B03075A003F123",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -53,7 +53,7 @@
|
|||
"address": "0x6642B57e4265BAD868C17Fc1d1F4F88DBBA04Aa8"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x9EC0480CF106d6dc1c7849BA141a56F874170F97"
|
||||
"address": "0x193101EA4C68eb894aeb922D4aC9C612a464c735"
|
||||
}
|
||||
},
|
||||
"LendingPoolDataProvider": {
|
||||
|
|
@ -66,7 +66,7 @@
|
|||
"address": "0xD9273d497eDBC967F39d419461CfcF382a0A822e"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x6642B57e4265BAD868C17Fc1d1F4F88DBBA04Aa8"
|
||||
"address": "0xf9cD0476CFC1E983e9feA9366A2C08e10eFc9e25"
|
||||
}
|
||||
},
|
||||
"PriceOracle": {
|
||||
|
|
@ -75,7 +75,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x099d9fF8F818290C8b5B7Db5bFca84CEebd2714c",
|
||||
"address": "0x18C3df59BEb7babb81BC20f61c5C175D0Cb7603d",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -85,7 +85,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xAF6BA11790D1942625C0c2dA07da19AB63845cfF",
|
||||
"address": "0x39ed2aE701B56AD229A19E628Bf5A515795F0AA3",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -95,7 +95,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xD83D2773a7873ae2b5f8Fb92097e20a8C64F691E",
|
||||
"address": "0x9434029990cF00118c28a06E014F0d7d879f28CE",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -105,7 +105,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xf91aC1098F3b154671Ce83290114aaE45ac0225f",
|
||||
"address": "0xccd7A2534fd4FD5119De8E368615b226e23F8F37",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -115,7 +115,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x830bceA96E56DBC1F8578f75fBaC0AF16B32A07d",
|
||||
"address": "0x4c010BA8A40e5c13Acc1E32c025c2b2aea405Dbb",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -169,7 +169,7 @@
|
|||
"address": "0x2B681757d757fbB80cc51c6094cEF5eE75bF55aA"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x3bDA11B584dDff7F66E0cFe1da1562c92B45db60"
|
||||
"address": "0x2aE520a05B31f170a18C425a1e8626aB7Ef71984"
|
||||
}
|
||||
},
|
||||
"WalletBalanceProvider": {
|
||||
|
|
@ -178,7 +178,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x392E5355a0e88Bd394F717227c752670fb3a8020",
|
||||
"address": "0xBD2244f43f7BA73eB35A64302A6D8DBf17BdF2F1",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -188,7 +188,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x7c2C195CD6D34B8F845992d380aADB2730bB9C6F",
|
||||
"address": "0x11df1AF606b85226Ab9a8B1FDa90395298e7494F",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -198,7 +198,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x8858eeB3DfffA017D4BCE9801D340D36Cf895CCf",
|
||||
"address": "0x8f9A92c125FFEb83d8eC808Cd9f8cb80084c1E37",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -208,7 +208,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x0078371BDeDE8aAc7DeBfFf451B74c5EDB385Af7",
|
||||
"address": "0xc4007844AE6bBe168cE8D692C86a7A4414FBcD26",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -218,7 +218,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xf4e77E5Da47AC3125140c470c71cBca77B5c638c",
|
||||
"address": "0xAb768C858C33DfcB6651d1174AFb750433a87Be0",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -228,7 +228,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x3619DbE27d7c1e7E91aA738697Ae7Bc5FC3eACA5",
|
||||
"address": "0xA089557D64DAE4b4FcB65aB7C8A520AABb213e37",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -238,7 +238,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x038B86d9d8FAFdd0a02ebd1A476432877b0107C8",
|
||||
"address": "0x20FAE2042b362E3FaB2806820b9A43CC116e2846",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -248,7 +248,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x1A1FEe7EeD918BD762173e4dc5EfDB8a78C924A8",
|
||||
"address": "0x8880F314112f15C2AfF674c3B27f9a44Ca86e4d0",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -258,7 +258,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x500D1d6A4c7D8Ae28240b47c8FCde034D827fD5e",
|
||||
"address": "0xDcb10C2e15110Db4B02C0a1df459768E680ce245",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -268,7 +268,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xc4905364b78a742ccce7B890A89514061E47068D",
|
||||
"address": "0xfD408ec64Da574b1859814F810564f73ea2Ff003",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -278,7 +278,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xD6C850aeBFDC46D7F4c207e445cC0d6B0919BDBe",
|
||||
"address": "0x0006F7c3542BEE76Dd887f54eD22405Ac4ae905a",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -288,7 +288,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x8B5B7a6055E54a36fF574bbE40cf2eA68d5554b3",
|
||||
"address": "0x6ca94a51c644eca3F9CA315bcC41CbA6940A66Eb",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -298,7 +298,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xEcc0a6dbC0bb4D51E4F84A315a9e5B0438cAD4f0",
|
||||
"address": "0x6765291Cab755B980F377445eFd0F9F945CDA6C4",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -308,7 +308,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x20Ce94F404343aD2752A2D01b43fa407db9E0D00",
|
||||
"address": "0xa7dB4d25Fc525d19Fbda4E74AAF447B88420FbcB",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -318,7 +318,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x1d80315fac6aBd3EfeEbE97dEc44461ba7556160",
|
||||
"address": "0x273D60904A8DBa3Ae6B20505c59902644124fF0E",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -328,7 +328,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x2D8553F9ddA85A9B3259F6Bf26911364B85556F5",
|
||||
"address": "0xfc37dE87C1Ee39cc856782BF96fEdcB6FA5c5A7f",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -338,7 +338,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x52d3b94181f8654db2530b0fEe1B19173f519C52",
|
||||
"address": "0x049228dFFEdf91ff224e9F96247aEBA700e3590c",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -348,7 +348,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xd15468525c35BDBC1eD8F2e09A00F8a173437f2f",
|
||||
"address": "0xA410D1f3fEAF300842142Cd7AA1709D84944DCb7",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -358,7 +358,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x7e35Eaf7e8FBd7887ad538D4A38Df5BbD073814a",
|
||||
"address": "0x835973768750b3ED2D5c3EF5AdcD5eDb44d12aD4",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -368,7 +368,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x5bcb88A0d20426e451332eE6C4324b0e663c50E0",
|
||||
"address": "0x1181FC27dbF04B5105243E60BB1936c002e9d5C8",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -378,7 +378,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x3521eF8AaB0323004A6dD8b03CE890F4Ea3A13f5",
|
||||
"address": "0x6F96975e2a0e1380b6e2e406BB33Ae96e4b6DB65",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -388,7 +388,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x53369fd4680FfE3DfF39Fc6DDa9CfbfD43daeA2E",
|
||||
"address": "0xc032930653da193EDE295B4DcE3DD093a695c3b3",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -398,7 +398,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xB00cC45B4a7d3e1FEE684cFc4417998A1c183e6d",
|
||||
"address": "0xb3363f4349b1160DbA55ec4D82fDe874A4123A2a",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -408,7 +408,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x58F132FBB86E21545A4Bace3C19f1C05d86d7A22",
|
||||
"address": "0xf8c6eB390cDc5C08717bC2268aa0c1169A9B5deE",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -417,7 +417,7 @@
|
|||
"address": "0xDf73fC454FA018051D4a1509e63D11530A59DE10"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x3b050AFb4ac4ACE646b31fF3639C1CD43aC31460"
|
||||
"address": "0x18c3e48a45839B3BbC998c70A2fD41fB8D93a35D"
|
||||
}
|
||||
},
|
||||
"StableDebtToken": {
|
||||
|
|
@ -426,7 +426,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xA0AB1cB92A4AF81f84dCd258155B5c25D247b54E",
|
||||
"address": "0x2ca7Aa6CcCdb5D77F1c1d3E6a21fF0F7ac24C825",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -436,13 +436,13 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x5f7134cd38C826a7649f9Cc47dda24d834DD2967",
|
||||
"address": "0x527a346011Cd6c71973f653426Ce609fa53dd59E",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
"AToken": {
|
||||
"localhost": {
|
||||
"address": "0xE91bBe8ee03560E3dda2786f95335F5399813Ca0",
|
||||
"address": "0x3035D5D127487Ee5Df5FD951D9624a8b877A8497",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"buidlerevm": {
|
||||
|
|
@ -456,7 +456,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x7f23223A2FAf869962B38f5eC4aAB7f37454A45e",
|
||||
"address": "0xAA6DfC2A802857Fadb75726B6166484e2c011cf5",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -466,7 +466,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0xf784709d2317D872237C4bC22f867d1BAe2913AB",
|
||||
"address": "0x2cc20bE530F92865c2ed8CeD0b020a11bFe62Fe7",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -476,7 +476,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x1203D1b97BF6E546c00C45Cda035D3010ACe1180",
|
||||
"address": "0xFd23fD3d937ae73a7b545B8Bfeb218395bDe9b8f",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
},
|
||||
|
|
@ -486,7 +486,7 @@
|
|||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
},
|
||||
"localhost": {
|
||||
"address": "0x8733AfE8174BA7c04c6CD694bD673294079b7E10",
|
||||
"address": "0xEe821582b591CE5e4a9B7fFc4E2DAD47D3759C08",
|
||||
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -99,6 +99,7 @@ export enum ProtocolErrors {
|
|||
SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = '40', // 'User did not borrow the specified currency'
|
||||
NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE = '41', // "There isn't enough liquidity available to liquidate"
|
||||
NO_ERRORS = '42', // 'No errors'
|
||||
INVALID_FLASHLOAN_MODE = '43', //Invalid flashloan mode
|
||||
|
||||
// old
|
||||
|
||||
|
|
@ -109,6 +110,7 @@ export enum ProtocolErrors {
|
|||
INVALID_REDIRECTED_BALANCE_AFTER_TRANSFER = 'Invalid redirected balance after transfer',
|
||||
INVALID_REDIRECTION_ADDRESS = 'Invalid redirection address',
|
||||
INVALID_HF = 'Invalid health factor',
|
||||
TRANSFER_AMOUNT_EXCEEDS_BALANCE = 'ERC20: transfer amount exceeds balance'
|
||||
}
|
||||
|
||||
export type tEthereumAddress = string;
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@
|
|||
"types-gen": "typechain --target ethers-v5 --outDir ./types './artifacts/*.json'",
|
||||
"test": "buidler test",
|
||||
"test-scenarios": "buidler test test/__setup.spec.ts test/scenario.spec.ts",
|
||||
"test-flash": "buidler test test/__setup.spec.ts test/flashloan.spec.ts",
|
||||
"dev:coverage": "buidler coverage",
|
||||
"dev:deployment": "buidler dev-deployment",
|
||||
"dev:deployExample": "buidler deploy-Example",
|
||||
|
|
|
|||
|
|
@ -1,19 +1,26 @@
|
|||
import {TestEnv, makeSuite} from './helpers/make-suite';
|
||||
import {APPROVAL_AMOUNT_LENDING_POOL, oneRay} from '../helpers/constants';
|
||||
import {convertToCurrencyDecimals, getMockFlashLoanReceiver} from '../helpers/contracts-helpers';
|
||||
import {
|
||||
convertToCurrencyDecimals,
|
||||
getMockFlashLoanReceiver,
|
||||
getContract,
|
||||
} from '../helpers/contracts-helpers';
|
||||
import {ethers} from 'ethers';
|
||||
import {MockFlashLoanReceiver} from '../types/MockFlashLoanReceiver';
|
||||
import {ProtocolErrors} from '../helpers/types';
|
||||
import {ProtocolErrors, eContractid} from '../helpers/types';
|
||||
import BigNumber from 'bignumber.js';
|
||||
import {VariableDebtToken} from '../types/VariableDebtToken';
|
||||
import {StableDebtToken} from '../types/StableDebtToken';
|
||||
|
||||
const {expect} = require('chai');
|
||||
|
||||
makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
||||
let _mockFlashLoanReceiver = {} as MockFlashLoanReceiver;
|
||||
const {
|
||||
INCONSISTENT_PROTOCOL_ACTUAL_BALANCE,
|
||||
COLLATERAL_BALANCE_IS_0,
|
||||
REQUESTED_AMOUNT_TOO_SMALL,
|
||||
NOT_ENOUGH_LIQUIDITY_TO_BORROW,
|
||||
TRANSFER_AMOUNT_EXCEEDS_BALANCE,
|
||||
INVALID_FLASHLOAN_MODE
|
||||
} = ProtocolErrors;
|
||||
|
||||
before(async () => {
|
||||
|
|
@ -31,14 +38,16 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
await pool.deposit(weth.address, amountToDeposit, '0');
|
||||
});
|
||||
|
||||
it('Takes ETH flashloan, returns the funds correctly', async () => {
|
||||
it('Takes WETH flashloan with mode = 0, returns the funds correctly', async () => {
|
||||
const {pool, deployer, weth} = testEnv;
|
||||
|
||||
await pool.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
ethers.utils.parseEther('0.8'),
|
||||
'0x10'
|
||||
0,
|
||||
'0x10',
|
||||
'0'
|
||||
);
|
||||
|
||||
ethers.utils.parseUnits('10000');
|
||||
|
|
@ -57,18 +66,17 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
expect(currentLiquidityIndex.toString()).to.be.equal('1000720000000000000000000000');
|
||||
});
|
||||
|
||||
it('Takes an ETH flashloan as big as the available liquidity', async () => {
|
||||
it('Takes an ETH flashloan with mode = 0 as big as the available liquidity', async () => {
|
||||
const {pool, weth} = testEnv;
|
||||
|
||||
const reserveDataBefore = await pool.getReserveData(weth.address);
|
||||
|
||||
console.log('Total liquidity is ', reserveDataBefore.availableLiquidity.toString());
|
||||
|
||||
const txResult = await pool.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
'1000720000000000000',
|
||||
'0x10'
|
||||
0,
|
||||
'0x10',
|
||||
'0'
|
||||
);
|
||||
|
||||
const reserveData = await pool.getReserveData(weth.address);
|
||||
|
|
@ -85,21 +93,79 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
expect(currentLiquidityIndex.toString()).to.be.equal('1001620648000000000000000000');
|
||||
});
|
||||
|
||||
it('Takes WETH flashloan, does not return the funds (revert expected)', async () => {
|
||||
const {pool, deployer, weth} = testEnv;
|
||||
|
||||
// move funds to the MockFlashLoanReceiver contract to pay the fee
|
||||
|
||||
it('Takes WETH flashloan, does not return the funds with mode = 0. (revert expected)', async () => {
|
||||
const {pool, weth, users} = testEnv;
|
||||
const caller = users[1];
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
await expect(
|
||||
pool.flashLoan(
|
||||
pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
ethers.utils.parseEther('0.8'),
|
||||
0,
|
||||
'0x10',
|
||||
'0'
|
||||
)
|
||||
).to.be.revertedWith(TRANSFER_AMOUNT_EXCEEDS_BALANCE);
|
||||
});
|
||||
|
||||
it('Takes a WETH flashloan with an invalid mode. (revert expected)', async () => {
|
||||
const {pool, weth, users} = testEnv;
|
||||
const caller = users[1];
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
await expect(
|
||||
pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
ethers.utils.parseEther('0.8'),
|
||||
4,
|
||||
'0x10',
|
||||
'0'
|
||||
)
|
||||
).to.be.revertedWith(INVALID_FLASHLOAN_MODE);
|
||||
});
|
||||
|
||||
it('Caller deposits 1000 DAI as collateral, Takes WETH flashloan with mode = 2, does not return the funds. A variable loan for caller is created', async () => {
|
||||
const {dai, pool, weth, users} = testEnv;
|
||||
|
||||
const caller = users[1];
|
||||
|
||||
await dai.connect(caller.signer).mint(await convertToCurrencyDecimals(dai.address, '1000'));
|
||||
|
||||
await dai.connect(caller.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
const amountToDeposit = await convertToCurrencyDecimals(dai.address, '1000');
|
||||
|
||||
await pool.connect(caller.signer).deposit(dai.address, amountToDeposit, '0');
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
await pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
ethers.utils.parseEther('0.8'),
|
||||
'0x10'
|
||||
)
|
||||
).to.be.revertedWith(INCONSISTENT_PROTOCOL_ACTUAL_BALANCE);
|
||||
2,
|
||||
'0x10',
|
||||
'0'
|
||||
);
|
||||
const {variableDebtTokenAddress} = await pool.getReserveTokensAddresses(weth.address);
|
||||
|
||||
const wethDebtToken = await getContract<VariableDebtToken>(
|
||||
eContractid.VariableDebtToken,
|
||||
variableDebtTokenAddress
|
||||
);
|
||||
|
||||
const callerDebt = await wethDebtToken.balanceOf(caller.address);
|
||||
|
||||
expect(callerDebt.toString()).to.be.equal('800720000000000000', 'Invalid user debt');
|
||||
});
|
||||
|
||||
it('tries to take a very small flashloan, which would result in 0 fees (revert expected)', async () => {
|
||||
|
|
@ -110,7 +176,9 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
'1', //1 wei loan
|
||||
'0x10'
|
||||
2,
|
||||
'0x10',
|
||||
'0'
|
||||
)
|
||||
).to.be.revertedWith(REQUESTED_AMOUNT_TOO_SMALL);
|
||||
});
|
||||
|
|
@ -123,45 +191,52 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
_mockFlashLoanReceiver.address,
|
||||
weth.address,
|
||||
'1004415000000000000', //slightly higher than the available liquidity
|
||||
'0x10'
|
||||
2,
|
||||
'0x10',
|
||||
'0'
|
||||
),
|
||||
NOT_ENOUGH_LIQUIDITY_TO_BORROW
|
||||
).to.be.revertedWith(NOT_ENOUGH_LIQUIDITY_TO_BORROW);
|
||||
TRANSFER_AMOUNT_EXCEEDS_BALANCE
|
||||
).to.be.revertedWith(TRANSFER_AMOUNT_EXCEEDS_BALANCE);
|
||||
});
|
||||
|
||||
it('tries to take a flashloan using a non contract address as receiver (revert expected)', async () => {
|
||||
const {pool, deployer, weth} = testEnv;
|
||||
|
||||
await expect(pool.flashLoan(deployer.address, weth.address, '1000000000000000000', '0x10')).to
|
||||
.be.reverted;
|
||||
await expect(
|
||||
pool.flashLoan(deployer.address, weth.address, '1000000000000000000', 2, '0x10', '0')
|
||||
).to.be.reverted;
|
||||
});
|
||||
|
||||
it('Deposits DAI into the reserve', async () => {
|
||||
const {dai, pool} = testEnv;
|
||||
it('Deposits USDC into the reserve', async () => {
|
||||
const {usdc, pool} = testEnv;
|
||||
|
||||
await dai.mint(await convertToCurrencyDecimals(dai.address, '1000'));
|
||||
await usdc.mint(await convertToCurrencyDecimals(usdc.address, '1000'));
|
||||
|
||||
await dai.approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
await usdc.approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
const amountToDeposit = await convertToCurrencyDecimals(dai.address, '1000');
|
||||
const amountToDeposit = await convertToCurrencyDecimals(usdc.address, '1000');
|
||||
|
||||
await pool.deposit(dai.address, amountToDeposit, '0');
|
||||
await pool.deposit(usdc.address, amountToDeposit, '0');
|
||||
});
|
||||
|
||||
it('Takes out a 500 DAI flashloan, returns the funds correctly', async () => {
|
||||
const {dai, pool, deployer: depositor} = testEnv;
|
||||
it('Takes out a 500 USDC flashloan, returns the funds correctly', async () => {
|
||||
const {usdc, pool, deployer: depositor} = testEnv;
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(false);
|
||||
|
||||
const flashloanAmount = await convertToCurrencyDecimals(usdc.address, '500');
|
||||
|
||||
await pool.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
dai.address,
|
||||
ethers.utils.parseEther('500'),
|
||||
'0x10'
|
||||
usdc.address,
|
||||
flashloanAmount,
|
||||
0,
|
||||
'0x10',
|
||||
'0'
|
||||
);
|
||||
|
||||
const reserveData = await pool.getReserveData(dai.address);
|
||||
const userData = await pool.getUserReserveData(dai.address, depositor.address);
|
||||
const reserveData = await pool.getReserveData(usdc.address);
|
||||
const userData = await pool.getUserReserveData(usdc.address, depositor.address);
|
||||
|
||||
const totalLiquidity = reserveData.availableLiquidity
|
||||
.add(reserveData.totalBorrowsStable)
|
||||
|
|
@ -171,7 +246,7 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
const currentLiquidityIndex = reserveData.liquidityIndex.toString();
|
||||
const currentUserBalance = userData.currentATokenBalance.toString();
|
||||
|
||||
const expectedLiquidity = ethers.utils.parseEther('1000.450');
|
||||
const expectedLiquidity = await convertToCurrencyDecimals(usdc.address, '1000.450');
|
||||
|
||||
expect(totalLiquidity).to.be.equal(expectedLiquidity, 'Invalid total liquidity');
|
||||
expect(currentLiqudityRate).to.be.equal('0', 'Invalid liquidity rate');
|
||||
|
|
@ -182,19 +257,101 @@ makeSuite('LendingPool FlashLoan function', (testEnv: TestEnv) => {
|
|||
expect(currentUserBalance.toString()).to.be.equal(expectedLiquidity, 'Invalid user balance');
|
||||
});
|
||||
|
||||
it('Takes out a 500 DAI flashloan, does not return the funds (revert expected)', async () => {
|
||||
const {dai, pool} = testEnv;
|
||||
it('Takes out a 500 USDC flashloan with mode = 0, does not return the funds. (revert expected)', async () => {
|
||||
const {usdc, pool, users} = testEnv;
|
||||
const caller = users[2];
|
||||
|
||||
const flashloanAmount = await convertToCurrencyDecimals(usdc.address, '500');
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
await expect(
|
||||
pool.flashLoan(
|
||||
_mockFlashLoanReceiver.address,
|
||||
dai.address,
|
||||
ethers.utils.parseEther('500'),
|
||||
'0x10'
|
||||
),
|
||||
INCONSISTENT_PROTOCOL_ACTUAL_BALANCE
|
||||
).to.be.revertedWith(INCONSISTENT_PROTOCOL_ACTUAL_BALANCE);
|
||||
pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(_mockFlashLoanReceiver.address, usdc.address, flashloanAmount, 2, '0x10', '0')
|
||||
).to.be.revertedWith(COLLATERAL_BALANCE_IS_0);
|
||||
});
|
||||
|
||||
it('Caller deposits 5 WETH as collateral, Takes a USDC flashloan with mode = 2, does not return the funds. A loan for caller is created', async () => {
|
||||
const {usdc, pool, weth, users} = testEnv;
|
||||
|
||||
const caller = users[2];
|
||||
|
||||
await weth.connect(caller.signer).mint(await convertToCurrencyDecimals(weth.address, '5'));
|
||||
|
||||
await weth.connect(caller.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
const amountToDeposit = await convertToCurrencyDecimals(weth.address, '5');
|
||||
|
||||
await pool.connect(caller.signer).deposit(weth.address, amountToDeposit, '0');
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
const flashloanAmount = await convertToCurrencyDecimals(usdc.address, '500');
|
||||
|
||||
await pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(_mockFlashLoanReceiver.address, usdc.address, flashloanAmount, 2, '0x10', '0');
|
||||
const {variableDebtTokenAddress} = await pool.getReserveTokensAddresses(usdc.address);
|
||||
|
||||
const usdcDebtToken = await getContract<VariableDebtToken>(
|
||||
eContractid.VariableDebtToken,
|
||||
variableDebtTokenAddress
|
||||
);
|
||||
|
||||
const callerDebt = await usdcDebtToken.balanceOf(caller.address);
|
||||
|
||||
expect(callerDebt.toString()).to.be.equal('500450000', 'Invalid user debt');
|
||||
});
|
||||
|
||||
it('Caller deposits 1000 DAI as collateral, Takes a WETH flashloan with mode = 0, does not approve the transfer of the funds', async () => {
|
||||
const {dai, pool, weth, users} = testEnv;
|
||||
|
||||
const caller = users[3];
|
||||
|
||||
await dai.connect(caller.signer).mint(await convertToCurrencyDecimals(dai.address, '1000'));
|
||||
|
||||
await dai.connect(caller.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
const amountToDeposit = await convertToCurrencyDecimals(dai.address, '1000');
|
||||
|
||||
await pool.connect(caller.signer).deposit(dai.address, amountToDeposit, '0');
|
||||
|
||||
const flashAmount = ethers.utils.parseEther('0.8');
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(false);
|
||||
await _mockFlashLoanReceiver.setAmountToApprove(flashAmount.div(2));
|
||||
|
||||
await expect(
|
||||
pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(_mockFlashLoanReceiver.address, weth.address, flashAmount, 0, '0x10', '0')
|
||||
).to.be.revertedWith('ERC20: transfer amount exceeds allowance');
|
||||
});
|
||||
|
||||
it('Caller takes a WETH flashloan with mode = 1', async () => {
|
||||
const {dai, pool, weth, users} = testEnv;
|
||||
|
||||
const caller = users[3];
|
||||
|
||||
const flashAmount = ethers.utils.parseEther('0.8');
|
||||
|
||||
await _mockFlashLoanReceiver.setFailExecutionTransfer(true);
|
||||
|
||||
await pool
|
||||
.connect(caller.signer)
|
||||
.flashLoan(_mockFlashLoanReceiver.address, weth.address, flashAmount, 1, '0x10', '0');
|
||||
|
||||
const {stableDebtTokenAddress} = await pool.getReserveTokensAddresses(weth.address);
|
||||
|
||||
const wethDebtToken = await getContract<StableDebtToken>(
|
||||
eContractid.VariableDebtToken,
|
||||
stableDebtTokenAddress
|
||||
);
|
||||
|
||||
const callerDebt = await wethDebtToken.balanceOf(caller.address);
|
||||
|
||||
expect(callerDebt.toString()).to.be.equal('800720000000000000', 'Invalid user debt');
|
||||
|
||||
});
|
||||
});
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user