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Initialize | 2463600 | 3 days ago | IN | 0 S | 0.00007841 |
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
Pool
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 100000 runs
Other Settings:
berlin EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol'; import {Errors} from '../libraries/helpers/Errors.sol'; import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol'; import {PoolLogic} from '../libraries/logic/PoolLogic.sol'; import {ReserveLogic} from '../libraries/logic/ReserveLogic.sol'; import {EModeLogic} from '../libraries/logic/EModeLogic.sol'; import {SupplyLogic} from '../libraries/logic/SupplyLogic.sol'; import {FlashLoanLogic} from '../libraries/logic/FlashLoanLogic.sol'; import {BorrowLogic} from '../libraries/logic/BorrowLogic.sol'; import {LiquidationLogic} from '../libraries/logic/LiquidationLogic.sol'; import {DataTypes} from '../libraries/types/DataTypes.sol'; import {BridgeLogic} from '../libraries/logic/BridgeLogic.sol'; import {IERC20WithPermit} from '../../interfaces/IERC20WithPermit.sol'; import {IPoolAddressesProvider} from '../../interfaces/IPoolAddressesProvider.sol'; import {IPool} from '../../interfaces/IPool.sol'; import {IACLManager} from '../../interfaces/IACLManager.sol'; import {PoolStorage} from './PoolStorage.sol'; /** * @title Pool contract * @author Aave * @notice Main point of interaction with an Aave protocol's market * - Users can: * # Supply * # Withdraw * # Borrow * # Repay * # Swap their loans between variable and stable rate * # Enable/disable their supplied assets as collateral rebalance stable rate borrow positions * # Liquidate positions * # Execute Flash Loans * @dev To be covered by a proxy contract, owned by the PoolAddressesProvider of the specific market * @dev All admin functions are callable by the PoolConfigurator contract defined also in the * PoolAddressesProvider */ contract Pool is VersionedInitializable, PoolStorage, IPool { using ReserveLogic for DataTypes.ReserveData; uint256 public constant POOL_REVISION = 0x1; IPoolAddressesProvider public immutable ADDRESSES_PROVIDER; /** * @dev Only pool configurator can call functions marked by this modifier. */ modifier onlyPoolConfigurator() { _onlyPoolConfigurator(); _; } /** * @dev Only pool admin can call functions marked by this modifier. */ modifier onlyPoolAdmin() { _onlyPoolAdmin(); _; } /** * @dev Only bridge can call functions marked by this modifier. */ modifier onlyBridge() { _onlyBridge(); _; } function _onlyPoolConfigurator() internal view virtual { require( ADDRESSES_PROVIDER.getPoolConfigurator() == msg.sender, Errors.CALLER_NOT_POOL_CONFIGURATOR ); } function _onlyPoolAdmin() internal view virtual { require( IACLManager(ADDRESSES_PROVIDER.getACLManager()).isPoolAdmin(msg.sender), Errors.CALLER_NOT_POOL_ADMIN ); } function _onlyBridge() internal view virtual { require( IACLManager(ADDRESSES_PROVIDER.getACLManager()).isBridge(msg.sender), Errors.CALLER_NOT_BRIDGE ); } function getRevision() internal pure virtual override returns (uint256) { return POOL_REVISION; } /** * @dev Constructor. * @param provider The address of the PoolAddressesProvider contract */ constructor(IPoolAddressesProvider provider) { ADDRESSES_PROVIDER = provider; } /** * @notice Initializes the Pool. * @dev Function is invoked by the proxy contract when the Pool contract is added to the * PoolAddressesProvider of the market. * @dev Caching the address of the PoolAddressesProvider in order to reduce gas consumption on subsequent operations * @param provider The address of the PoolAddressesProvider */ function initialize(IPoolAddressesProvider provider) external virtual initializer { require(provider == ADDRESSES_PROVIDER, Errors.INVALID_ADDRESSES_PROVIDER); _maxStableRateBorrowSizePercent = 0.25e4; } /// @inheritdoc IPool function mintUnbacked( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external virtual override onlyBridge { BridgeLogic.executeMintUnbacked( _reserves, _reservesList, _usersConfig[onBehalfOf], asset, amount, onBehalfOf, referralCode ); } /// @inheritdoc IPool function backUnbacked( address asset, uint256 amount, uint256 fee ) external virtual override onlyBridge returns (uint256) { return BridgeLogic.executeBackUnbacked(_reserves[asset], asset, amount, fee, _bridgeProtocolFee); } /// @inheritdoc IPool function supply( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) public virtual override { SupplyLogic.executeSupply( _reserves, _reservesList, _usersConfig[onBehalfOf], DataTypes.ExecuteSupplyParams({ asset: asset, amount: amount, onBehalfOf: onBehalfOf, referralCode: referralCode }) ); } /// @inheritdoc IPool function supplyWithPermit( address asset, uint256 amount, address onBehalfOf, uint16 referralCode, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) public virtual override { IERC20WithPermit(asset).permit( msg.sender, address(this), amount, deadline, permitV, permitR, permitS ); SupplyLogic.executeSupply( _reserves, _reservesList, _usersConfig[onBehalfOf], DataTypes.ExecuteSupplyParams({ asset: asset, amount: amount, onBehalfOf: onBehalfOf, referralCode: referralCode }) ); } /// @inheritdoc IPool function withdraw( address asset, uint256 amount, address to ) public virtual override returns (uint256) { return SupplyLogic.executeWithdraw( _reserves, _reservesList, _eModeCategories, _usersConfig[msg.sender], DataTypes.ExecuteWithdrawParams({ asset: asset, amount: amount, to: to, reservesCount: _reservesCount, oracle: ADDRESSES_PROVIDER.getPriceOracle(), userEModeCategory: _usersEModeCategory[msg.sender] }) ); } /// @inheritdoc IPool function borrow( address asset, uint256 amount, uint256 interestRateMode, uint16 referralCode, address onBehalfOf ) public virtual override { BorrowLogic.executeBorrow( _reserves, _reservesList, _eModeCategories, _usersConfig[onBehalfOf], DataTypes.ExecuteBorrowParams({ asset: asset, user: msg.sender, onBehalfOf: onBehalfOf, amount: amount, interestRateMode: DataTypes.InterestRateMode(interestRateMode), referralCode: referralCode, releaseUnderlying: true, maxStableRateBorrowSizePercent: _maxStableRateBorrowSizePercent, reservesCount: _reservesCount, oracle: ADDRESSES_PROVIDER.getPriceOracle(), userEModeCategory: _usersEModeCategory[onBehalfOf], priceOracleSentinel: ADDRESSES_PROVIDER.getPriceOracleSentinel() }) ); } /// @inheritdoc IPool function repay( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf ) public virtual override returns (uint256) { return BorrowLogic.executeRepay( _reserves, _reservesList, _usersConfig[onBehalfOf], DataTypes.ExecuteRepayParams({ asset: asset, amount: amount, interestRateMode: DataTypes.InterestRateMode(interestRateMode), onBehalfOf: onBehalfOf, useATokens: false }) ); } /// @inheritdoc IPool function repayWithPermit( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) public virtual override returns (uint256) { { IERC20WithPermit(asset).permit( msg.sender, address(this), amount, deadline, permitV, permitR, permitS ); } { DataTypes.ExecuteRepayParams memory params = DataTypes.ExecuteRepayParams({ asset: asset, amount: amount, interestRateMode: DataTypes.InterestRateMode(interestRateMode), onBehalfOf: onBehalfOf, useATokens: false }); return BorrowLogic.executeRepay(_reserves, _reservesList, _usersConfig[onBehalfOf], params); } } /// @inheritdoc IPool function repayWithATokens( address asset, uint256 amount, uint256 interestRateMode ) public virtual override returns (uint256) { return BorrowLogic.executeRepay( _reserves, _reservesList, _usersConfig[msg.sender], DataTypes.ExecuteRepayParams({ asset: asset, amount: amount, interestRateMode: DataTypes.InterestRateMode(interestRateMode), onBehalfOf: msg.sender, useATokens: true }) ); } /// @inheritdoc IPool function swapBorrowRateMode(address asset, uint256 interestRateMode) public virtual override { BorrowLogic.executeSwapBorrowRateMode( _reserves[asset], _usersConfig[msg.sender], asset, DataTypes.InterestRateMode(interestRateMode) ); } /// @inheritdoc IPool function rebalanceStableBorrowRate(address asset, address user) public virtual override { BorrowLogic.executeRebalanceStableBorrowRate(_reserves[asset], asset, user); } /// @inheritdoc IPool function setUserUseReserveAsCollateral( address asset, bool useAsCollateral ) public virtual override { SupplyLogic.executeUseReserveAsCollateral( _reserves, _reservesList, _eModeCategories, _usersConfig[msg.sender], asset, useAsCollateral, _reservesCount, ADDRESSES_PROVIDER.getPriceOracle(), _usersEModeCategory[msg.sender] ); } /// @inheritdoc IPool function liquidationCall( address collateralAsset, address debtAsset, address user, uint256 debtToCover, bool receiveAToken ) public virtual override { LiquidationLogic.executeLiquidationCall( _reserves, _reservesList, _usersConfig, _eModeCategories, DataTypes.ExecuteLiquidationCallParams({ reservesCount: _reservesCount, debtToCover: debtToCover, collateralAsset: collateralAsset, debtAsset: debtAsset, user: user, receiveAToken: receiveAToken, priceOracle: ADDRESSES_PROVIDER.getPriceOracle(), userEModeCategory: _usersEModeCategory[user], priceOracleSentinel: ADDRESSES_PROVIDER.getPriceOracleSentinel() }) ); } /// @inheritdoc IPool function flashLoan( address receiverAddress, address[] calldata assets, uint256[] calldata amounts, uint256[] calldata interestRateModes, address onBehalfOf, bytes calldata params, uint16 referralCode ) public virtual override { DataTypes.FlashloanParams memory flashParams = DataTypes.FlashloanParams({ receiverAddress: receiverAddress, assets: assets, amounts: amounts, interestRateModes: interestRateModes, onBehalfOf: onBehalfOf, params: params, referralCode: referralCode, flashLoanPremiumToProtocol: _flashLoanPremiumToProtocol, flashLoanPremiumTotal: _flashLoanPremiumTotal, maxStableRateBorrowSizePercent: _maxStableRateBorrowSizePercent, reservesCount: _reservesCount, addressesProvider: address(ADDRESSES_PROVIDER), userEModeCategory: _usersEModeCategory[onBehalfOf], isAuthorizedFlashBorrower: IACLManager(ADDRESSES_PROVIDER.getACLManager()).isFlashBorrower( msg.sender ) }); FlashLoanLogic.executeFlashLoan( _reserves, _reservesList, _eModeCategories, _usersConfig[onBehalfOf], flashParams ); } /// @inheritdoc IPool function flashLoanSimple( address receiverAddress, address asset, uint256 amount, bytes calldata params, uint16 referralCode ) public virtual override { DataTypes.FlashloanSimpleParams memory flashParams = DataTypes.FlashloanSimpleParams({ receiverAddress: receiverAddress, asset: asset, amount: amount, params: params, referralCode: referralCode, flashLoanPremiumToProtocol: _flashLoanPremiumToProtocol, flashLoanPremiumTotal: _flashLoanPremiumTotal }); FlashLoanLogic.executeFlashLoanSimple(_reserves[asset], flashParams); } /// @inheritdoc IPool function mintToTreasury(address[] calldata assets) external virtual override { PoolLogic.executeMintToTreasury(_reserves, assets); } /// @inheritdoc IPool function getReserveData( address asset ) external view virtual override returns (DataTypes.ReserveData memory) { return _reserves[asset]; } /// @inheritdoc IPool function getUserAccountData( address user ) external view virtual override returns ( uint256 totalCollateralBase, uint256 totalDebtBase, uint256 availableBorrowsBase, uint256 currentLiquidationThreshold, uint256 ltv, uint256 healthFactor ) { return PoolLogic.executeGetUserAccountData( _reserves, _reservesList, _eModeCategories, DataTypes.CalculateUserAccountDataParams({ userConfig: _usersConfig[user], reservesCount: _reservesCount, user: user, oracle: ADDRESSES_PROVIDER.getPriceOracle(), userEModeCategory: _usersEModeCategory[user] }) ); } /// @inheritdoc IPool function getConfiguration( address asset ) external view virtual override returns (DataTypes.ReserveConfigurationMap memory) { return _reserves[asset].configuration; } /// @inheritdoc IPool function getUserConfiguration( address user ) external view virtual override returns (DataTypes.UserConfigurationMap memory) { return _usersConfig[user]; } /// @inheritdoc IPool function getReserveNormalizedIncome( address asset ) external view virtual override returns (uint256) { return _reserves[asset].getNormalizedIncome(); } /// @inheritdoc IPool function getReserveNormalizedVariableDebt( address asset ) external view virtual override returns (uint256) { return _reserves[asset].getNormalizedDebt(); } /// @inheritdoc IPool function getReservesList() external view virtual override returns (address[] memory) { uint256 reservesListCount = _reservesCount; uint256 droppedReservesCount = 0; address[] memory reservesList = new address[](reservesListCount); for (uint256 i = 0; i < reservesListCount; i++) { if (_reservesList[i] != address(0)) { reservesList[i - droppedReservesCount] = _reservesList[i]; } else { droppedReservesCount++; } } // Reduces the length of the reserves array by `droppedReservesCount` assembly { mstore(reservesList, sub(reservesListCount, droppedReservesCount)) } return reservesList; } /// @inheritdoc IPool function getReserveAddressById(uint16 id) external view returns (address) { return _reservesList[id]; } /// @inheritdoc IPool function MAX_STABLE_RATE_BORROW_SIZE_PERCENT() public view virtual override returns (uint256) { return _maxStableRateBorrowSizePercent; } /// @inheritdoc IPool function BRIDGE_PROTOCOL_FEE() public view virtual override returns (uint256) { return _bridgeProtocolFee; } /// @inheritdoc IPool function FLASHLOAN_PREMIUM_TOTAL() public view virtual override returns (uint128) { return _flashLoanPremiumTotal; } /// @inheritdoc IPool function FLASHLOAN_PREMIUM_TO_PROTOCOL() public view virtual override returns (uint128) { return _flashLoanPremiumToProtocol; } /// @inheritdoc IPool function MAX_NUMBER_RESERVES() public view virtual override returns (uint16) { return ReserveConfiguration.MAX_RESERVES_COUNT; } /// @inheritdoc IPool function finalizeTransfer( address asset, address from, address to, uint256 amount, uint256 balanceFromBefore, uint256 balanceToBefore ) external virtual override { require(msg.sender == _reserves[asset].aTokenAddress, Errors.CALLER_NOT_ATOKEN); SupplyLogic.executeFinalizeTransfer( _reserves, _reservesList, _eModeCategories, _usersConfig, DataTypes.FinalizeTransferParams({ asset: asset, from: from, to: to, amount: amount, balanceFromBefore: balanceFromBefore, balanceToBefore: balanceToBefore, reservesCount: _reservesCount, oracle: ADDRESSES_PROVIDER.getPriceOracle(), fromEModeCategory: _usersEModeCategory[from] }) ); } /// @inheritdoc IPool function initReserve( address asset, address aTokenAddress, address stableDebtAddress, address variableDebtAddress, address interestRateStrategyAddress ) external virtual override onlyPoolConfigurator { if ( PoolLogic.executeInitReserve( _reserves, _reservesList, DataTypes.InitReserveParams({ asset: asset, aTokenAddress: aTokenAddress, stableDebtAddress: stableDebtAddress, variableDebtAddress: variableDebtAddress, interestRateStrategyAddress: interestRateStrategyAddress, reservesCount: _reservesCount, maxNumberReserves: MAX_NUMBER_RESERVES() }) ) ) { _reservesCount++; } } /// @inheritdoc IPool function dropReserve(address asset) external virtual override onlyPoolConfigurator { PoolLogic.executeDropReserve(_reserves, _reservesList, asset); } /// @inheritdoc IPool function setReserveInterestRateStrategyAddress( address asset, address rateStrategyAddress ) external virtual override onlyPoolConfigurator { require(asset != address(0), Errors.ZERO_ADDRESS_NOT_VALID); require(_reserves[asset].id != 0 || _reservesList[0] == asset, Errors.ASSET_NOT_LISTED); _reserves[asset].interestRateStrategyAddress = rateStrategyAddress; } /// @inheritdoc IPool function setConfiguration( address asset, DataTypes.ReserveConfigurationMap calldata configuration ) external virtual override onlyPoolConfigurator { require(asset != address(0), Errors.ZERO_ADDRESS_NOT_VALID); require(_reserves[asset].id != 0 || _reservesList[0] == asset, Errors.ASSET_NOT_LISTED); _reserves[asset].configuration = configuration; } /// @inheritdoc IPool function updateBridgeProtocolFee( uint256 protocolFee ) external virtual override onlyPoolConfigurator { _bridgeProtocolFee = protocolFee; } /// @inheritdoc IPool function updateFlashloanPremiums( uint128 flashLoanPremiumTotal, uint128 flashLoanPremiumToProtocol ) external virtual override onlyPoolConfigurator { _flashLoanPremiumTotal = flashLoanPremiumTotal; _flashLoanPremiumToProtocol = flashLoanPremiumToProtocol; } /// @inheritdoc IPool function configureEModeCategory( uint8 id, DataTypes.EModeCategory memory category ) external virtual override onlyPoolConfigurator { // category 0 is reserved for volatile heterogeneous assets and it's always disabled require(id != 0, Errors.EMODE_CATEGORY_RESERVED); _eModeCategories[id] = category; } /// @inheritdoc IPool function getEModeCategoryData( uint8 id ) external view virtual override returns (DataTypes.EModeCategory memory) { return _eModeCategories[id]; } /// @inheritdoc IPool function setUserEMode(uint8 categoryId) external virtual override { EModeLogic.executeSetUserEMode( _reserves, _reservesList, _eModeCategories, _usersEModeCategory, _usersConfig[msg.sender], DataTypes.ExecuteSetUserEModeParams({ reservesCount: _reservesCount, oracle: ADDRESSES_PROVIDER.getPriceOracle(), categoryId: categoryId }) ); } /// @inheritdoc IPool function getUserEMode(address user) external view virtual override returns (uint256) { return _usersEModeCategory[user]; } /// @inheritdoc IPool function resetIsolationModeTotalDebt( address asset ) external virtual override onlyPoolConfigurator { PoolLogic.executeResetIsolationModeTotalDebt(_reserves, asset); } /// @inheritdoc IPool function rescueTokens( address token, address to, uint256 amount ) external virtual override onlyPoolAdmin { PoolLogic.executeRescueTokens(token, to, amount); } /// @inheritdoc IPool /// @dev Deprecated: maintained for compatibility purposes function deposit( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external virtual override { SupplyLogic.executeSupply( _reserves, _reservesList, _usersConfig[onBehalfOf], DataTypes.ExecuteSupplyParams({ asset: asset, amount: amount, onBehalfOf: onBehalfOf, referralCode: referralCode }) ); } }
// SPDX-License-Identifier: LGPL-3.0-or-later pragma solidity ^0.8.0; import {IERC20} from '../../openzeppelin/contracts/IERC20.sol'; /// @title Gnosis Protocol v2 Safe ERC20 Transfer Library /// @author Gnosis Developers /// @dev Gas-efficient version of Openzeppelin's SafeERC20 contract. library GPv2SafeERC20 { /// @dev Wrapper around a call to the ERC20 function `transfer` that reverts /// also when the token returns `false`. function safeTransfer(IERC20 token, address to, uint256 value) internal { bytes4 selector_ = token.transfer.selector; // solhint-disable-next-line no-inline-assembly assembly { let freeMemoryPointer := mload(0x40) mstore(freeMemoryPointer, selector_) mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) mstore(add(freeMemoryPointer, 36), value) if iszero(call(gas(), token, 0, freeMemoryPointer, 68, 0, 0)) { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } } require(getLastTransferResult(token), 'GPv2: failed transfer'); } /// @dev Wrapper around a call to the ERC20 function `transferFrom` that /// reverts also when the token returns `false`. function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { bytes4 selector_ = token.transferFrom.selector; // solhint-disable-next-line no-inline-assembly assembly { let freeMemoryPointer := mload(0x40) mstore(freeMemoryPointer, selector_) mstore(add(freeMemoryPointer, 4), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) mstore(add(freeMemoryPointer, 36), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) mstore(add(freeMemoryPointer, 68), value) if iszero(call(gas(), token, 0, freeMemoryPointer, 100, 0, 0)) { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } } require(getLastTransferResult(token), 'GPv2: failed transferFrom'); } /// @dev Verifies that the last return was a successful `transfer*` call. /// This is done by checking that the return data is either empty, or /// is a valid ABI encoded boolean. function getLastTransferResult(IERC20 token) private view returns (bool success) { // NOTE: Inspecting previous return data requires assembly. Note that // we write the return data to memory 0 in the case where the return // data size is 32, this is OK since the first 64 bytes of memory are // reserved by Solidy as a scratch space that can be used within // assembly blocks. // <https://docs.soliditylang.org/en/v0.7.6/internals/layout_in_memory.html> // solhint-disable-next-line no-inline-assembly assembly { /// @dev Revert with an ABI encoded Solidity error with a message /// that fits into 32-bytes. /// /// An ABI encoded Solidity error has the following memory layout: /// /// ------------+---------------------------------- /// byte range | value /// ------------+---------------------------------- /// 0x00..0x04 | selector("Error(string)") /// 0x04..0x24 | string offset (always 0x20) /// 0x24..0x44 | string length /// 0x44..0x64 | string value, padded to 32-bytes function revertWithMessage(length, message) { mstore(0x00, '\x08\xc3\x79\xa0') mstore(0x04, 0x20) mstore(0x24, length) mstore(0x44, message) revert(0x00, 0x64) } switch returndatasize() // Non-standard ERC20 transfer without return. case 0 { // NOTE: When the return data size is 0, verify that there // is code at the address. This is done in order to maintain // compatibility with Solidity calling conventions. // <https://docs.soliditylang.org/en/v0.7.6/control-structures.html#external-function-calls> if iszero(extcodesize(token)) { revertWithMessage(20, 'GPv2: not a contract') } success := 1 } // Standard ERC20 transfer returning boolean success value. case 32 { returndatacopy(0, 0, returndatasize()) // NOTE: For ABI encoding v1, any non-zero value is accepted // as `true` for a boolean. In order to stay compatible with // OpenZeppelin's `SafeERC20` library which is known to work // with the existing ERC20 implementation we care about, // make sure we return success for any non-zero return value // from the `transfer*` call. success := iszero(iszero(mload(0))) } default { revertWithMessage(31, 'GPv2: malformed transfer result') } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, 'Address: insufficient balance'); (bool success, ) = recipient.call{value: amount}(''); require(success, 'Address: unable to send value, recipient may have reverted'); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, 'Address: low-level call failed'); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, 'Address: low-level call with value failed'); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, 'Address: insufficient balance for call'); require(isContract(target), 'Address: call to non-contract'); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data ) internal view returns (bytes memory) { return functionStaticCall(target, data, 'Address: low-level static call failed'); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), 'Address: static call to non-contract'); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, 'Address: low-level delegate call failed'); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), 'Address: delegate call to non-contract'); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return payable(msg.sender); } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged( bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole ); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IERC20} from './IERC20.sol'; interface IERC20Detailed is IERC20 { function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeCast.sol) pragma solidity ^0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits */ function toUint224(uint256 value) internal pure returns (uint224) { require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits"); return uint224(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits */ function toUint96(uint256 value) internal pure returns (uint96) { require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits"); return uint96(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits. */ function toUint8(uint256 value) internal pure returns (uint8) { require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, 'SafeCast: value must be positive'); return uint256(value); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128) { require( value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits" ); return int128(value); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64) { require( value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits" ); return int64(value); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32) { require( value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits" ); return int32(value); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16) { require( value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits" ); return int16(value); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits. * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8) { require( value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits" ); return int8(value); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256"); return int256(value); } }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IPoolAddressesProvider} from '../../interfaces/IPoolAddressesProvider.sol'; import {IPool} from '../../interfaces/IPool.sol'; /** * @title IFlashLoanReceiver * @author Aave * @notice Defines the basic interface of a flashloan-receiver contract. * @dev Implement this interface to develop a flashloan-compatible flashLoanReceiver contract */ interface IFlashLoanReceiver { /** * @notice Executes an operation after receiving the flash-borrowed assets * @dev Ensure that the contract can return the debt + premium, e.g., has * enough funds to repay and has approved the Pool to pull the total amount * @param assets The addresses of the flash-borrowed assets * @param amounts The amounts of the flash-borrowed assets * @param premiums The fee of each flash-borrowed asset * @param initiator The address of the flashloan initiator * @param params The byte-encoded params passed when initiating the flashloan * @return True if the execution of the operation succeeds, false otherwise */ function executeOperation( address[] calldata assets, uint256[] calldata amounts, uint256[] calldata premiums, address initiator, bytes calldata params ) external returns (bool); function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); function POOL() external view returns (IPool); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IPoolAddressesProvider} from '../../interfaces/IPoolAddressesProvider.sol'; import {IPool} from '../../interfaces/IPool.sol'; /** * @title IFlashLoanSimpleReceiver * @author Aave * @notice Defines the basic interface of a flashloan-receiver contract. * @dev Implement this interface to develop a flashloan-compatible flashLoanReceiver contract */ interface IFlashLoanSimpleReceiver { /** * @notice Executes an operation after receiving the flash-borrowed asset * @dev Ensure that the contract can return the debt + premium, e.g., has * enough funds to repay and has approved the Pool to pull the total amount * @param asset The address of the flash-borrowed asset * @param amount The amount of the flash-borrowed asset * @param premium The fee of the flash-borrowed asset * @param initiator The address of the flashloan initiator * @param params The byte-encoded params passed when initiating the flashloan * @return True if the execution of the operation succeeds, false otherwise */ function executeOperation( address asset, uint256 amount, uint256 premium, address initiator, bytes calldata params ) external returns (bool); function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); function POOL() external view returns (IPool); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @title IAaveIncentivesController * @author Aave * @notice Defines the basic interface for an Aave Incentives Controller. * @dev It only contains one single function, needed as a hook on aToken and debtToken transfers. */ interface IAaveIncentivesController { /** * @dev Called by the corresponding asset on transfer hook in order to update the rewards distribution. * @dev The units of `totalSupply` and `userBalance` should be the same. * @param user The address of the user whose asset balance has changed * @param totalSupply The total supply of the asset prior to user balance change * @param userBalance The previous user balance prior to balance change */ function handleAction(address user, uint256 totalSupply, uint256 userBalance) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; /** * @title IACLManager * @author Aave * @notice Defines the basic interface for the ACL Manager */ interface IACLManager { /** * @notice Returns the contract address of the PoolAddressesProvider * @return The address of the PoolAddressesProvider */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Returns the identifier of the PoolAdmin role * @return The id of the PoolAdmin role */ function POOL_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the EmergencyAdmin role * @return The id of the EmergencyAdmin role */ function EMERGENCY_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the RiskAdmin role * @return The id of the RiskAdmin role */ function RISK_ADMIN_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the FlashBorrower role * @return The id of the FlashBorrower role */ function FLASH_BORROWER_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the Bridge role * @return The id of the Bridge role */ function BRIDGE_ROLE() external view returns (bytes32); /** * @notice Returns the identifier of the AssetListingAdmin role * @return The id of the AssetListingAdmin role */ function ASSET_LISTING_ADMIN_ROLE() external view returns (bytes32); /** * @notice Set the role as admin of a specific role. * @dev By default the admin role for all roles is `DEFAULT_ADMIN_ROLE`. * @param role The role to be managed by the admin role * @param adminRole The admin role */ function setRoleAdmin(bytes32 role, bytes32 adminRole) external; /** * @notice Adds a new admin as PoolAdmin * @param admin The address of the new admin */ function addPoolAdmin(address admin) external; /** * @notice Removes an admin as PoolAdmin * @param admin The address of the admin to remove */ function removePoolAdmin(address admin) external; /** * @notice Returns true if the address is PoolAdmin, false otherwise * @param admin The address to check * @return True if the given address is PoolAdmin, false otherwise */ function isPoolAdmin(address admin) external view returns (bool); /** * @notice Adds a new admin as EmergencyAdmin * @param admin The address of the new admin */ function addEmergencyAdmin(address admin) external; /** * @notice Removes an admin as EmergencyAdmin * @param admin The address of the admin to remove */ function removeEmergencyAdmin(address admin) external; /** * @notice Returns true if the address is EmergencyAdmin, false otherwise * @param admin The address to check * @return True if the given address is EmergencyAdmin, false otherwise */ function isEmergencyAdmin(address admin) external view returns (bool); /** * @notice Adds a new admin as RiskAdmin * @param admin The address of the new admin */ function addRiskAdmin(address admin) external; /** * @notice Removes an admin as RiskAdmin * @param admin The address of the admin to remove */ function removeRiskAdmin(address admin) external; /** * @notice Returns true if the address is RiskAdmin, false otherwise * @param admin The address to check * @return True if the given address is RiskAdmin, false otherwise */ function isRiskAdmin(address admin) external view returns (bool); /** * @notice Adds a new address as FlashBorrower * @param borrower The address of the new FlashBorrower */ function addFlashBorrower(address borrower) external; /** * @notice Removes an address as FlashBorrower * @param borrower The address of the FlashBorrower to remove */ function removeFlashBorrower(address borrower) external; /** * @notice Returns true if the address is FlashBorrower, false otherwise * @param borrower The address to check * @return True if the given address is FlashBorrower, false otherwise */ function isFlashBorrower(address borrower) external view returns (bool); /** * @notice Adds a new address as Bridge * @param bridge The address of the new Bridge */ function addBridge(address bridge) external; /** * @notice Removes an address as Bridge * @param bridge The address of the bridge to remove */ function removeBridge(address bridge) external; /** * @notice Returns true if the address is Bridge, false otherwise * @param bridge The address to check * @return True if the given address is Bridge, false otherwise */ function isBridge(address bridge) external view returns (bool); /** * @notice Adds a new admin as AssetListingAdmin * @param admin The address of the new admin */ function addAssetListingAdmin(address admin) external; /** * @notice Removes an admin as AssetListingAdmin * @param admin The address of the admin to remove */ function removeAssetListingAdmin(address admin) external; /** * @notice Returns true if the address is AssetListingAdmin, false otherwise * @param admin The address to check * @return True if the given address is AssetListingAdmin, false otherwise */ function isAssetListingAdmin(address admin) external view returns (bool); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol'; import {IScaledBalanceToken} from './IScaledBalanceToken.sol'; import {IInitializableAToken} from './IInitializableAToken.sol'; /** * @title IAToken * @author Aave * @notice Defines the basic interface for an AToken. */ interface IAToken is IERC20, IScaledBalanceToken, IInitializableAToken { /** * @dev Emitted during the transfer action * @param from The user whose tokens are being transferred * @param to The recipient * @param value The scaled amount being transferred * @param index The next liquidity index of the reserve */ event BalanceTransfer(address indexed from, address indexed to, uint256 value, uint256 index); /** * @notice Mints `amount` aTokens to `user` * @param caller The address performing the mint * @param onBehalfOf The address of the user that will receive the minted aTokens * @param amount The amount of tokens getting minted * @param index The next liquidity index of the reserve * @return `true` if the the previous balance of the user was 0 */ function mint( address caller, address onBehalfOf, uint256 amount, uint256 index ) external returns (bool); /** * @notice Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying` * @dev In some instances, the mint event could be emitted from a burn transaction * if the amount to burn is less than the interest that the user accrued * @param from The address from which the aTokens will be burned * @param receiverOfUnderlying The address that will receive the underlying * @param amount The amount being burned * @param index The next liquidity index of the reserve */ function burn(address from, address receiverOfUnderlying, uint256 amount, uint256 index) external; /** * @notice Mints aTokens to the reserve treasury * @param amount The amount of tokens getting minted * @param index The next liquidity index of the reserve */ function mintToTreasury(uint256 amount, uint256 index) external; /** * @notice Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken * @param from The address getting liquidated, current owner of the aTokens * @param to The recipient * @param value The amount of tokens getting transferred */ function transferOnLiquidation(address from, address to, uint256 value) external; /** * @notice Transfers the underlying asset to `target`. * @dev Used by the Pool to transfer assets in borrow(), withdraw() and flashLoan() * @param target The recipient of the underlying * @param amount The amount getting transferred */ function transferUnderlyingTo(address target, uint256 amount) external; /** * @notice Handles the underlying received by the aToken after the transfer has been completed. * @dev The default implementation is empty as with standard ERC20 tokens, nothing needs to be done after the * transfer is concluded. However in the future there may be aTokens that allow for example to stake the underlying * to receive LM rewards. In that case, `handleRepayment()` would perform the staking of the underlying asset. * @param user The user executing the repayment * @param onBehalfOf The address of the user who will get his debt reduced/removed * @param amount The amount getting repaid */ function handleRepayment(address user, address onBehalfOf, uint256 amount) external; /** * @notice Allow passing a signed message to approve spending * @dev implements the permit function as for * https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md * @param owner The owner of the funds * @param spender The spender * @param value The amount * @param deadline The deadline timestamp, type(uint256).max for max deadline * @param v Signature param * @param s Signature param * @param r Signature param */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @notice Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH) * @return The address of the underlying asset */ function UNDERLYING_ASSET_ADDRESS() external view returns (address); /** * @notice Returns the address of the Aave treasury, receiving the fees on this aToken. * @return Address of the Aave treasury */ function RESERVE_TREASURY_ADDRESS() external view returns (address); /** * @notice Get the domain separator for the token * @dev Return cached value if chainId matches cache, otherwise recomputes separator * @return The domain separator of the token at current chain */ function DOMAIN_SEPARATOR() external view returns (bytes32); /** * @notice Returns the nonce for owner. * @param owner The address of the owner * @return The nonce of the owner */ function nonces(address owner) external view returns (uint256); /** * @notice Rescue and transfer tokens locked in this contract * @param token The address of the token * @param to The address of the recipient * @param amount The amount of token to transfer */ function rescueTokens(address token, address to, uint256 amount) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol'; /** * @title IERC20WithPermit * @author Aave * @notice Interface for the permit function (EIP-2612) */ interface IERC20WithPermit is IERC20 { /** * @notice Allow passing a signed message to approve spending * @dev implements the permit function as for * https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md * @param owner The owner of the funds * @param spender The spender * @param value The amount * @param deadline The deadline timestamp, type(uint256).max for max deadline * @param v Signature param * @param s Signature param * @param r Signature param */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IAaveIncentivesController} from './IAaveIncentivesController.sol'; import {IPool} from './IPool.sol'; /** * @title IInitializableAToken * @author Aave * @notice Interface for the initialize function on AToken */ interface IInitializableAToken { /** * @dev Emitted when an aToken is initialized * @param underlyingAsset The address of the underlying asset * @param pool The address of the associated pool * @param treasury The address of the treasury * @param incentivesController The address of the incentives controller for this aToken * @param aTokenDecimals The decimals of the underlying * @param aTokenName The name of the aToken * @param aTokenSymbol The symbol of the aToken * @param params A set of encoded parameters for additional initialization */ event Initialized( address indexed underlyingAsset, address indexed pool, address treasury, address incentivesController, uint8 aTokenDecimals, string aTokenName, string aTokenSymbol, bytes params ); /** * @notice Initializes the aToken * @param pool The pool contract that is initializing this contract * @param treasury The address of the Aave treasury, receiving the fees on this aToken * @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH) * @param incentivesController The smart contract managing potential incentives distribution * @param aTokenDecimals The decimals of the aToken, same as the underlying asset's * @param aTokenName The name of the aToken * @param aTokenSymbol The symbol of the aToken * @param params A set of encoded parameters for additional initialization */ function initialize( IPool pool, address treasury, address underlyingAsset, IAaveIncentivesController incentivesController, uint8 aTokenDecimals, string calldata aTokenName, string calldata aTokenSymbol, bytes calldata params ) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IAaveIncentivesController} from './IAaveIncentivesController.sol'; import {IPool} from './IPool.sol'; /** * @title IInitializableDebtToken * @author Aave * @notice Interface for the initialize function common between debt tokens */ interface IInitializableDebtToken { /** * @dev Emitted when a debt token is initialized * @param underlyingAsset The address of the underlying asset * @param pool The address of the associated pool * @param incentivesController The address of the incentives controller for this aToken * @param debtTokenDecimals The decimals of the debt token * @param debtTokenName The name of the debt token * @param debtTokenSymbol The symbol of the debt token * @param params A set of encoded parameters for additional initialization */ event Initialized( address indexed underlyingAsset, address indexed pool, address incentivesController, uint8 debtTokenDecimals, string debtTokenName, string debtTokenSymbol, bytes params ); /** * @notice Initializes the debt token. * @param pool The pool contract that is initializing this contract * @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH) * @param incentivesController The smart contract managing potential incentives distribution * @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's * @param debtTokenName The name of the token * @param debtTokenSymbol The symbol of the token * @param params A set of encoded parameters for additional initialization */ function initialize( IPool pool, address underlyingAsset, IAaveIncentivesController incentivesController, uint8 debtTokenDecimals, string memory debtTokenName, string memory debtTokenSymbol, bytes calldata params ) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; import {DataTypes} from '../protocol/libraries/types/DataTypes.sol'; /** * @title IPool * @author Aave * @notice Defines the basic interface for an Aave Pool. */ interface IPool { /** * @dev Emitted on mintUnbacked() * @param reserve The address of the underlying asset of the reserve * @param user The address initiating the supply * @param onBehalfOf The beneficiary of the supplied assets, receiving the aTokens * @param amount The amount of supplied assets * @param referralCode The referral code used */ event MintUnbacked( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); /** * @dev Emitted on backUnbacked() * @param reserve The address of the underlying asset of the reserve * @param backer The address paying for the backing * @param amount The amount added as backing * @param fee The amount paid in fees */ event BackUnbacked(address indexed reserve, address indexed backer, uint256 amount, uint256 fee); /** * @dev Emitted on supply() * @param reserve The address of the underlying asset of the reserve * @param user The address initiating the supply * @param onBehalfOf The beneficiary of the supply, receiving the aTokens * @param amount The amount supplied * @param referralCode The referral code used */ event Supply( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); /** * @dev Emitted on withdraw() * @param reserve The address of the underlying asset being withdrawn * @param user The address initiating the withdrawal, owner of aTokens * @param to The address that will receive the underlying * @param amount The amount to be withdrawn */ event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount); /** * @dev Emitted on borrow() and flashLoan() when debt needs to be opened * @param reserve The address of the underlying asset being borrowed * @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just * initiator of the transaction on flashLoan() * @param onBehalfOf The address that will be getting the debt * @param amount The amount borrowed out * @param interestRateMode The rate mode: 1 for Stable, 2 for Variable * @param borrowRate The numeric rate at which the user has borrowed, expressed in ray * @param referralCode The referral code used */ event Borrow( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 borrowRate, uint16 indexed referralCode ); /** * @dev Emitted on repay() * @param reserve The address of the underlying asset of the reserve * @param user The beneficiary of the repayment, getting his debt reduced * @param repayer The address of the user initiating the repay(), providing the funds * @param amount The amount repaid * @param useATokens True if the repayment is done using aTokens, `false` if done with underlying asset directly */ event Repay( address indexed reserve, address indexed user, address indexed repayer, uint256 amount, bool useATokens ); /** * @dev Emitted on swapBorrowRateMode() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user swapping his rate mode * @param interestRateMode The current interest rate mode of the position being swapped: 1 for Stable, 2 for Variable */ event SwapBorrowRateMode( address indexed reserve, address indexed user, DataTypes.InterestRateMode interestRateMode ); /** * @dev Emitted on borrow(), repay() and liquidationCall() when using isolated assets * @param asset The address of the underlying asset of the reserve * @param totalDebt The total isolation mode debt for the reserve */ event IsolationModeTotalDebtUpdated(address indexed asset, uint256 totalDebt); /** * @dev Emitted when the user selects a certain asset category for eMode * @param user The address of the user * @param categoryId The category id */ event UserEModeSet(address indexed user, uint8 categoryId); /** * @dev Emitted on setUserUseReserveAsCollateral() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user enabling the usage as collateral */ event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user); /** * @dev Emitted on setUserUseReserveAsCollateral() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user enabling the usage as collateral */ event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user); /** * @dev Emitted on rebalanceStableBorrowRate() * @param reserve The address of the underlying asset of the reserve * @param user The address of the user for which the rebalance has been executed */ event RebalanceStableBorrowRate(address indexed reserve, address indexed user); /** * @dev Emitted on flashLoan() * @param target The address of the flash loan receiver contract * @param initiator The address initiating the flash loan * @param asset The address of the asset being flash borrowed * @param amount The amount flash borrowed * @param interestRateMode The flashloan mode: 0 for regular flashloan, 1 for Stable debt, 2 for Variable debt * @param premium The fee flash borrowed * @param referralCode The referral code used */ event FlashLoan( address indexed target, address initiator, address indexed asset, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 premium, uint16 indexed referralCode ); /** * @dev Emitted when a borrower is liquidated. * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation * @param user The address of the borrower getting liquidated * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover * @param liquidatedCollateralAmount The amount of collateral received by the liquidator * @param liquidator The address of the liquidator * @param receiveAToken True if the liquidators wants to receive the collateral aTokens, `false` if he wants * to receive the underlying collateral asset directly */ event LiquidationCall( address indexed collateralAsset, address indexed debtAsset, address indexed user, uint256 debtToCover, uint256 liquidatedCollateralAmount, address liquidator, bool receiveAToken ); /** * @dev Emitted when the state of a reserve is updated. * @param reserve The address of the underlying asset of the reserve * @param liquidityRate The next liquidity rate * @param stableBorrowRate The next stable borrow rate * @param variableBorrowRate The next variable borrow rate * @param liquidityIndex The next liquidity index * @param variableBorrowIndex The next variable borrow index */ event ReserveDataUpdated( address indexed reserve, uint256 liquidityRate, uint256 stableBorrowRate, uint256 variableBorrowRate, uint256 liquidityIndex, uint256 variableBorrowIndex ); /** * @dev Emitted when the protocol treasury receives minted aTokens from the accrued interest. * @param reserve The address of the reserve * @param amountMinted The amount minted to the treasury */ event MintedToTreasury(address indexed reserve, uint256 amountMinted); /** * @notice Mints an `amount` of aTokens to the `onBehalfOf` * @param asset The address of the underlying asset to mint * @param amount The amount to mint * @param onBehalfOf The address that will receive the aTokens * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function mintUnbacked( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external; /** * @notice Back the current unbacked underlying with `amount` and pay `fee`. * @param asset The address of the underlying asset to back * @param amount The amount to back * @param fee The amount paid in fees * @return The backed amount */ function backUnbacked(address asset, uint256 amount, uint256 fee) external returns (uint256); /** * @notice Supplies an `amount` of underlying asset into the reserve, receiving in return overlying aTokens. * - E.g. User supplies 100 USDC and gets in return 100 aUSDC * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function supply(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external; /** * @notice Supply with transfer approval of asset to be supplied done via permit function * see: https://eips.ethereum.org/EIPS/eip-2612 and https://eips.ethereum.org/EIPS/eip-713 * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param deadline The deadline timestamp that the permit is valid * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man * @param permitV The V parameter of ERC712 permit sig * @param permitR The R parameter of ERC712 permit sig * @param permitS The S parameter of ERC712 permit sig */ function supplyWithPermit( address asset, uint256 amount, address onBehalfOf, uint16 referralCode, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) external; /** * @notice Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned * E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC * @param asset The address of the underlying asset to withdraw * @param amount The underlying amount to be withdrawn * - Send the value type(uint256).max in order to withdraw the whole aToken balance * @param to The address that will receive the underlying, same as msg.sender if the user * wants to receive it on his own wallet, or a different address if the beneficiary is a * different wallet * @return The final amount withdrawn */ function withdraw(address asset, uint256 amount, address to) external returns (uint256); /** * @notice Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower * already supplied enough collateral, or he was given enough allowance by a credit delegator on the * corresponding debt token (StableDebtToken or VariableDebtToken) * - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet * and 100 stable/variable debt tokens, depending on the `interestRateMode` * @param asset The address of the underlying asset to borrow * @param amount The amount to be borrowed * @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man * @param onBehalfOf The address of the user who will receive the debt. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance */ function borrow( address asset, uint256 amount, uint256 interestRateMode, uint16 referralCode, address onBehalfOf ) external; /** * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned * - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable * @param onBehalfOf The address of the user who will get his debt reduced/removed. Should be the address of the * user calling the function if he wants to reduce/remove his own debt, or the address of any other * other borrower whose debt should be removed * @return The final amount repaid */ function repay( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf ) external returns (uint256); /** * @notice Repay with transfer approval of asset to be repaid done via permit function * see: https://eips.ethereum.org/EIPS/eip-2612 and https://eips.ethereum.org/EIPS/eip-713 * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable * @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the * user calling the function if he wants to reduce/remove his own debt, or the address of any other * other borrower whose debt should be removed * @param deadline The deadline timestamp that the permit is valid * @param permitV The V parameter of ERC712 permit sig * @param permitR The R parameter of ERC712 permit sig * @param permitS The S parameter of ERC712 permit sig * @return The final amount repaid */ function repayWithPermit( address asset, uint256 amount, uint256 interestRateMode, address onBehalfOf, uint256 deadline, uint8 permitV, bytes32 permitR, bytes32 permitS ) external returns (uint256); /** * @notice Repays a borrowed `amount` on a specific reserve using the reserve aTokens, burning the * equivalent debt tokens * - E.g. User repays 100 USDC using 100 aUSDC, burning 100 variable/stable debt tokens * @dev Passing uint256.max as amount will clean up any residual aToken dust balance, if the user aToken * balance is not enough to cover the whole debt * @param asset The address of the borrowed underlying asset previously borrowed * @param amount The amount to repay * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode` * @param interestRateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable * @return The final amount repaid */ function repayWithATokens( address asset, uint256 amount, uint256 interestRateMode ) external returns (uint256); /** * @notice Allows a borrower to swap his debt between stable and variable mode, or vice versa * @param asset The address of the underlying asset borrowed * @param interestRateMode The current interest rate mode of the position being swapped: 1 for Stable, 2 for Variable */ function swapBorrowRateMode(address asset, uint256 interestRateMode) external; /** * @notice Rebalances the stable interest rate of a user to the current stable rate defined on the reserve. * - Users can be rebalanced if the following conditions are satisfied: * 1. Usage ratio is above 95% * 2. the current supply APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too * much has been borrowed at a stable rate and suppliers are not earning enough * @param asset The address of the underlying asset borrowed * @param user The address of the user to be rebalanced */ function rebalanceStableBorrowRate(address asset, address user) external; /** * @notice Allows suppliers to enable/disable a specific supplied asset as collateral * @param asset The address of the underlying asset supplied * @param useAsCollateral True if the user wants to use the supply as collateral, false otherwise */ function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external; /** * @notice Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1 * - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives * a proportionally amount of the `collateralAsset` plus a bonus to cover market risk * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation * @param user The address of the borrower getting liquidated * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover * @param receiveAToken True if the liquidators wants to receive the collateral aTokens, `false` if he wants * to receive the underlying collateral asset directly */ function liquidationCall( address collateralAsset, address debtAsset, address user, uint256 debtToCover, bool receiveAToken ) external; /** * @notice Allows smartcontracts to access the liquidity of the pool within one transaction, * as long as the amount taken plus a fee is returned. * @dev IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept * into consideration. For further details please visit https://docs.aave.com/developers/ * @param receiverAddress The address of the contract receiving the funds, implementing IFlashLoanReceiver interface * @param assets The addresses of the assets being flash-borrowed * @param amounts The amounts of the assets being flash-borrowed * @param interestRateModes Types of the debt to open if the flash loan is not returned: * 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver * 1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address * 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address * @param onBehalfOf The address that will receive the debt in the case of using on `modes` 1 or 2 * @param params Variadic packed params to pass to the receiver as extra information * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function flashLoan( address receiverAddress, address[] calldata assets, uint256[] calldata amounts, uint256[] calldata interestRateModes, address onBehalfOf, bytes calldata params, uint16 referralCode ) external; /** * @notice Allows smartcontracts to access the liquidity of the pool within one transaction, * as long as the amount taken plus a fee is returned. * @dev IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept * into consideration. For further details please visit https://docs.aave.com/developers/ * @param receiverAddress The address of the contract receiving the funds, implementing IFlashLoanSimpleReceiver interface * @param asset The address of the asset being flash-borrowed * @param amount The amount of the asset being flash-borrowed * @param params Variadic packed params to pass to the receiver as extra information * @param referralCode The code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function flashLoanSimple( address receiverAddress, address asset, uint256 amount, bytes calldata params, uint16 referralCode ) external; /** * @notice Returns the user account data across all the reserves * @param user The address of the user * @return totalCollateralBase The total collateral of the user in the base currency used by the price feed * @return totalDebtBase The total debt of the user in the base currency used by the price feed * @return availableBorrowsBase The borrowing power left of the user in the base currency used by the price feed * @return currentLiquidationThreshold The liquidation threshold of the user * @return ltv The loan to value of The user * @return healthFactor The current health factor of the user */ function getUserAccountData( address user ) external view returns ( uint256 totalCollateralBase, uint256 totalDebtBase, uint256 availableBorrowsBase, uint256 currentLiquidationThreshold, uint256 ltv, uint256 healthFactor ); /** * @notice Initializes a reserve, activating it, assigning an aToken and debt tokens and an * interest rate strategy * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param aTokenAddress The address of the aToken that will be assigned to the reserve * @param stableDebtAddress The address of the StableDebtToken that will be assigned to the reserve * @param variableDebtAddress The address of the VariableDebtToken that will be assigned to the reserve * @param interestRateStrategyAddress The address of the interest rate strategy contract */ function initReserve( address asset, address aTokenAddress, address stableDebtAddress, address variableDebtAddress, address interestRateStrategyAddress ) external; /** * @notice Drop a reserve * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve */ function dropReserve(address asset) external; /** * @notice Updates the address of the interest rate strategy contract * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param rateStrategyAddress The address of the interest rate strategy contract */ function setReserveInterestRateStrategyAddress( address asset, address rateStrategyAddress ) external; /** * @notice Sets the configuration bitmap of the reserve as a whole * @dev Only callable by the PoolConfigurator contract * @param asset The address of the underlying asset of the reserve * @param configuration The new configuration bitmap */ function setConfiguration( address asset, DataTypes.ReserveConfigurationMap calldata configuration ) external; /** * @notice Returns the configuration of the reserve * @param asset The address of the underlying asset of the reserve * @return The configuration of the reserve */ function getConfiguration( address asset ) external view returns (DataTypes.ReserveConfigurationMap memory); /** * @notice Returns the configuration of the user across all the reserves * @param user The user address * @return The configuration of the user */ function getUserConfiguration( address user ) external view returns (DataTypes.UserConfigurationMap memory); /** * @notice Returns the normalized income of the reserve * @param asset The address of the underlying asset of the reserve * @return The reserve's normalized income */ function getReserveNormalizedIncome(address asset) external view returns (uint256); /** * @notice Returns the normalized variable debt per unit of asset * @dev WARNING: This function is intended to be used primarily by the protocol itself to get a * "dynamic" variable index based on time, current stored index and virtual rate at the current * moment (approx. a borrower would get if opening a position). This means that is always used in * combination with variable debt supply/balances. * If using this function externally, consider that is possible to have an increasing normalized * variable debt that is not equivalent to how the variable debt index would be updated in storage * (e.g. only updates with non-zero variable debt supply) * @param asset The address of the underlying asset of the reserve * @return The reserve normalized variable debt */ function getReserveNormalizedVariableDebt(address asset) external view returns (uint256); /** * @notice Returns the state and configuration of the reserve * @param asset The address of the underlying asset of the reserve * @return The state and configuration data of the reserve */ function getReserveData(address asset) external view returns (DataTypes.ReserveData memory); /** * @notice Validates and finalizes an aToken transfer * @dev Only callable by the overlying aToken of the `asset` * @param asset The address of the underlying asset of the aToken * @param from The user from which the aTokens are transferred * @param to The user receiving the aTokens * @param amount The amount being transferred/withdrawn * @param balanceFromBefore The aToken balance of the `from` user before the transfer * @param balanceToBefore The aToken balance of the `to` user before the transfer */ function finalizeTransfer( address asset, address from, address to, uint256 amount, uint256 balanceFromBefore, uint256 balanceToBefore ) external; /** * @notice Returns the list of the underlying assets of all the initialized reserves * @dev It does not include dropped reserves * @return The addresses of the underlying assets of the initialized reserves */ function getReservesList() external view returns (address[] memory); /** * @notice Returns the address of the underlying asset of a reserve by the reserve id as stored in the DataTypes.ReserveData struct * @param id The id of the reserve as stored in the DataTypes.ReserveData struct * @return The address of the reserve associated with id */ function getReserveAddressById(uint16 id) external view returns (address); /** * @notice Returns the PoolAddressesProvider connected to this contract * @return The address of the PoolAddressesProvider */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Updates the protocol fee on the bridging * @param bridgeProtocolFee The part of the premium sent to the protocol treasury */ function updateBridgeProtocolFee(uint256 bridgeProtocolFee) external; /** * @notice Updates flash loan premiums. Flash loan premium consists of two parts: * - A part is sent to aToken holders as extra, one time accumulated interest * - A part is collected by the protocol treasury * @dev The total premium is calculated on the total borrowed amount * @dev The premium to protocol is calculated on the total premium, being a percentage of `flashLoanPremiumTotal` * @dev Only callable by the PoolConfigurator contract * @param flashLoanPremiumTotal The total premium, expressed in bps * @param flashLoanPremiumToProtocol The part of the premium sent to the protocol treasury, expressed in bps */ function updateFlashloanPremiums( uint128 flashLoanPremiumTotal, uint128 flashLoanPremiumToProtocol ) external; /** * @notice Configures a new category for the eMode. * @dev In eMode, the protocol allows very high borrowing power to borrow assets of the same category. * The category 0 is reserved as it's the default for volatile assets * @param id The id of the category * @param config The configuration of the category */ function configureEModeCategory(uint8 id, DataTypes.EModeCategory memory config) external; /** * @notice Returns the data of an eMode category * @param id The id of the category * @return The configuration data of the category */ function getEModeCategoryData(uint8 id) external view returns (DataTypes.EModeCategory memory); /** * @notice Allows a user to use the protocol in eMode * @param categoryId The id of the category */ function setUserEMode(uint8 categoryId) external; /** * @notice Returns the eMode the user is using * @param user The address of the user * @return The eMode id */ function getUserEMode(address user) external view returns (uint256); /** * @notice Resets the isolation mode total debt of the given asset to zero * @dev It requires the given asset has zero debt ceiling * @param asset The address of the underlying asset to reset the isolationModeTotalDebt */ function resetIsolationModeTotalDebt(address asset) external; /** * @notice Returns the percentage of available liquidity that can be borrowed at once at stable rate * @return The percentage of available liquidity to borrow, expressed in bps */ function MAX_STABLE_RATE_BORROW_SIZE_PERCENT() external view returns (uint256); /** * @notice Returns the total fee on flash loans * @return The total fee on flashloans */ function FLASHLOAN_PREMIUM_TOTAL() external view returns (uint128); /** * @notice Returns the part of the bridge fees sent to protocol * @return The bridge fee sent to the protocol treasury */ function BRIDGE_PROTOCOL_FEE() external view returns (uint256); /** * @notice Returns the part of the flashloan fees sent to protocol * @return The flashloan fee sent to the protocol treasury */ function FLASHLOAN_PREMIUM_TO_PROTOCOL() external view returns (uint128); /** * @notice Returns the maximum number of reserves supported to be listed in this Pool * @return The maximum number of reserves supported */ function MAX_NUMBER_RESERVES() external view returns (uint16); /** * @notice Mints the assets accrued through the reserve factor to the treasury in the form of aTokens * @param assets The list of reserves for which the minting needs to be executed */ function mintToTreasury(address[] calldata assets) external; /** * @notice Rescue and transfer tokens locked in this contract * @param token The address of the token * @param to The address of the recipient * @param amount The amount of token to transfer */ function rescueTokens(address token, address to, uint256 amount) external; /** * @notice Supplies an `amount` of underlying asset into the reserve, receiving in return overlying aTokens. * - E.g. User supplies 100 USDC and gets in return 100 aUSDC * @dev Deprecated: Use the `supply` function instead * @param asset The address of the underlying asset to supply * @param amount The amount to be supplied * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of aTokens * is a different wallet * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function deposit(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @title IPoolAddressesProvider * @author Aave * @notice Defines the basic interface for a Pool Addresses Provider. */ interface IPoolAddressesProvider { /** * @dev Emitted when the market identifier is updated. * @param oldMarketId The old id of the market * @param newMarketId The new id of the market */ event MarketIdSet(string indexed oldMarketId, string indexed newMarketId); /** * @dev Emitted when the pool is updated. * @param oldAddress The old address of the Pool * @param newAddress The new address of the Pool */ event PoolUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the pool configurator is updated. * @param oldAddress The old address of the PoolConfigurator * @param newAddress The new address of the PoolConfigurator */ event PoolConfiguratorUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the price oracle is updated. * @param oldAddress The old address of the PriceOracle * @param newAddress The new address of the PriceOracle */ event PriceOracleUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the ACL manager is updated. * @param oldAddress The old address of the ACLManager * @param newAddress The new address of the ACLManager */ event ACLManagerUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the ACL admin is updated. * @param oldAddress The old address of the ACLAdmin * @param newAddress The new address of the ACLAdmin */ event ACLAdminUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the price oracle sentinel is updated. * @param oldAddress The old address of the PriceOracleSentinel * @param newAddress The new address of the PriceOracleSentinel */ event PriceOracleSentinelUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the pool data provider is updated. * @param oldAddress The old address of the PoolDataProvider * @param newAddress The new address of the PoolDataProvider */ event PoolDataProviderUpdated(address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when a new proxy is created. * @param id The identifier of the proxy * @param proxyAddress The address of the created proxy contract * @param implementationAddress The address of the implementation contract */ event ProxyCreated( bytes32 indexed id, address indexed proxyAddress, address indexed implementationAddress ); /** * @dev Emitted when a new non-proxied contract address is registered. * @param id The identifier of the contract * @param oldAddress The address of the old contract * @param newAddress The address of the new contract */ event AddressSet(bytes32 indexed id, address indexed oldAddress, address indexed newAddress); /** * @dev Emitted when the implementation of the proxy registered with id is updated * @param id The identifier of the contract * @param proxyAddress The address of the proxy contract * @param oldImplementationAddress The address of the old implementation contract * @param newImplementationAddress The address of the new implementation contract */ event AddressSetAsProxy( bytes32 indexed id, address indexed proxyAddress, address oldImplementationAddress, address indexed newImplementationAddress ); /** * @notice Returns the id of the Aave market to which this contract points to. * @return The market id */ function getMarketId() external view returns (string memory); /** * @notice Associates an id with a specific PoolAddressesProvider. * @dev This can be used to create an onchain registry of PoolAddressesProviders to * identify and validate multiple Aave markets. * @param newMarketId The market id */ function setMarketId(string calldata newMarketId) external; /** * @notice Returns an address by its identifier. * @dev The returned address might be an EOA or a contract, potentially proxied * @dev It returns ZERO if there is no registered address with the given id * @param id The id * @return The address of the registered for the specified id */ function getAddress(bytes32 id) external view returns (address); /** * @notice General function to update the implementation of a proxy registered with * certain `id`. If there is no proxy registered, it will instantiate one and * set as implementation the `newImplementationAddress`. * @dev IMPORTANT Use this function carefully, only for ids that don't have an explicit * setter function, in order to avoid unexpected consequences * @param id The id * @param newImplementationAddress The address of the new implementation */ function setAddressAsProxy(bytes32 id, address newImplementationAddress) external; /** * @notice Sets an address for an id replacing the address saved in the addresses map. * @dev IMPORTANT Use this function carefully, as it will do a hard replacement * @param id The id * @param newAddress The address to set */ function setAddress(bytes32 id, address newAddress) external; /** * @notice Returns the address of the Pool proxy. * @return The Pool proxy address */ function getPool() external view returns (address); /** * @notice Updates the implementation of the Pool, or creates a proxy * setting the new `pool` implementation when the function is called for the first time. * @param newPoolImpl The new Pool implementation */ function setPoolImpl(address newPoolImpl) external; /** * @notice Returns the address of the PoolConfigurator proxy. * @return The PoolConfigurator proxy address */ function getPoolConfigurator() external view returns (address); /** * @notice Updates the implementation of the PoolConfigurator, or creates a proxy * setting the new `PoolConfigurator` implementation when the function is called for the first time. * @param newPoolConfiguratorImpl The new PoolConfigurator implementation */ function setPoolConfiguratorImpl(address newPoolConfiguratorImpl) external; /** * @notice Returns the address of the price oracle. * @return The address of the PriceOracle */ function getPriceOracle() external view returns (address); /** * @notice Updates the address of the price oracle. * @param newPriceOracle The address of the new PriceOracle */ function setPriceOracle(address newPriceOracle) external; /** * @notice Returns the address of the ACL manager. * @return The address of the ACLManager */ function getACLManager() external view returns (address); /** * @notice Updates the address of the ACL manager. * @param newAclManager The address of the new ACLManager */ function setACLManager(address newAclManager) external; /** * @notice Returns the address of the ACL admin. * @return The address of the ACL admin */ function getACLAdmin() external view returns (address); /** * @notice Updates the address of the ACL admin. * @param newAclAdmin The address of the new ACL admin */ function setACLAdmin(address newAclAdmin) external; /** * @notice Returns the address of the price oracle sentinel. * @return The address of the PriceOracleSentinel */ function getPriceOracleSentinel() external view returns (address); /** * @notice Updates the address of the price oracle sentinel. * @param newPriceOracleSentinel The address of the new PriceOracleSentinel */ function setPriceOracleSentinel(address newPriceOracleSentinel) external; /** * @notice Returns the address of the data provider. * @return The address of the DataProvider */ function getPoolDataProvider() external view returns (address); /** * @notice Updates the address of the data provider. * @param newDataProvider The address of the new DataProvider */ function setPoolDataProvider(address newDataProvider) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @title IPriceOracleGetter * @author Aave * @notice Interface for the Aave price oracle. */ interface IPriceOracleGetter { /** * @notice Returns the base currency address * @dev Address 0x0 is reserved for USD as base currency. * @return Returns the base currency address. */ function BASE_CURRENCY() external view returns (address); /** * @notice Returns the base currency unit * @dev 1 ether for ETH, 1e8 for USD. * @return Returns the base currency unit. */ function BASE_CURRENCY_UNIT() external view returns (uint256); /** * @notice Returns the asset price in the base currency * @param asset The address of the asset * @return The price of the asset */ function getAssetPrice(address asset) external view returns (uint256); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IPoolAddressesProvider} from './IPoolAddressesProvider.sol'; /** * @title IPriceOracleSentinel * @author Aave * @notice Defines the basic interface for the PriceOracleSentinel */ interface IPriceOracleSentinel { /** * @dev Emitted after the sequencer oracle is updated * @param newSequencerOracle The new sequencer oracle */ event SequencerOracleUpdated(address newSequencerOracle); /** * @dev Emitted after the grace period is updated * @param newGracePeriod The new grace period value */ event GracePeriodUpdated(uint256 newGracePeriod); /** * @notice Returns the PoolAddressesProvider * @return The address of the PoolAddressesProvider contract */ function ADDRESSES_PROVIDER() external view returns (IPoolAddressesProvider); /** * @notice Returns true if the `borrow` operation is allowed. * @dev Operation not allowed when PriceOracle is down or grace period not passed. * @return True if the `borrow` operation is allowed, false otherwise. */ function isBorrowAllowed() external view returns (bool); /** * @notice Returns true if the `liquidation` operation is allowed. * @dev Operation not allowed when PriceOracle is down or grace period not passed. * @return True if the `liquidation` operation is allowed, false otherwise. */ function isLiquidationAllowed() external view returns (bool); /** * @notice Updates the address of the sequencer oracle * @param newSequencerOracle The address of the new Sequencer Oracle to use */ function setSequencerOracle(address newSequencerOracle) external; /** * @notice Updates the duration of the grace period * @param newGracePeriod The value of the new grace period duration */ function setGracePeriod(uint256 newGracePeriod) external; /** * @notice Returns the SequencerOracle * @return The address of the sequencer oracle contract */ function getSequencerOracle() external view returns (address); /** * @notice Returns the grace period * @return The duration of the grace period */ function getGracePeriod() external view returns (uint256); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {DataTypes} from '../protocol/libraries/types/DataTypes.sol'; /** * @title IReserveInterestRateStrategy * @author Aave * @notice Interface for the calculation of the interest rates */ interface IReserveInterestRateStrategy { /** * @notice Calculates the interest rates depending on the reserve's state and configurations * @param params The parameters needed to calculate interest rates * @return liquidityRate The liquidity rate expressed in rays * @return stableBorrowRate The stable borrow rate expressed in rays * @return variableBorrowRate The variable borrow rate expressed in rays */ function calculateInterestRates( DataTypes.CalculateInterestRatesParams memory params ) external view returns (uint256, uint256, uint256); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @title IScaledBalanceToken * @author Aave * @notice Defines the basic interface for a scaled-balance token. */ interface IScaledBalanceToken { /** * @dev Emitted after the mint action * @param caller The address performing the mint * @param onBehalfOf The address of the user that will receive the minted tokens * @param value The scaled-up amount being minted (based on user entered amount and balance increase from interest) * @param balanceIncrease The increase in scaled-up balance since the last action of 'onBehalfOf' * @param index The next liquidity index of the reserve */ event Mint( address indexed caller, address indexed onBehalfOf, uint256 value, uint256 balanceIncrease, uint256 index ); /** * @dev Emitted after the burn action * @dev If the burn function does not involve a transfer of the underlying asset, the target defaults to zero address * @param from The address from which the tokens will be burned * @param target The address that will receive the underlying, if any * @param value The scaled-up amount being burned (user entered amount - balance increase from interest) * @param balanceIncrease The increase in scaled-up balance since the last action of 'from' * @param index The next liquidity index of the reserve */ event Burn( address indexed from, address indexed target, uint256 value, uint256 balanceIncrease, uint256 index ); /** * @notice Returns the scaled balance of the user. * @dev The scaled balance is the sum of all the updated stored balance divided by the reserve's liquidity index * at the moment of the update * @param user The user whose balance is calculated * @return The scaled balance of the user */ function scaledBalanceOf(address user) external view returns (uint256); /** * @notice Returns the scaled balance of the user and the scaled total supply. * @param user The address of the user * @return The scaled balance of the user * @return The scaled total supply */ function getScaledUserBalanceAndSupply(address user) external view returns (uint256, uint256); /** * @notice Returns the scaled total supply of the scaled balance token. Represents sum(debt/index) * @return The scaled total supply */ function scaledTotalSupply() external view returns (uint256); /** * @notice Returns last index interest was accrued to the user's balance * @param user The address of the user * @return The last index interest was accrued to the user's balance, expressed in ray */ function getPreviousIndex(address user) external view returns (uint256); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IInitializableDebtToken} from './IInitializableDebtToken.sol'; /** * @title IStableDebtToken * @author Aave * @notice Defines the interface for the stable debt token * @dev It does not inherit from IERC20 to save in code size */ interface IStableDebtToken is IInitializableDebtToken { /** * @dev Emitted when new stable debt is minted * @param user The address of the user who triggered the minting * @param onBehalfOf The recipient of stable debt tokens * @param amount The amount minted (user entered amount + balance increase from interest) * @param currentBalance The balance of the user based on the previous balance and balance increase from interest * @param balanceIncrease The increase in balance since the last action of the user 'onBehalfOf' * @param newRate The rate of the debt after the minting * @param avgStableRate The next average stable rate after the minting * @param newTotalSupply The next total supply of the stable debt token after the action */ event Mint( address indexed user, address indexed onBehalfOf, uint256 amount, uint256 currentBalance, uint256 balanceIncrease, uint256 newRate, uint256 avgStableRate, uint256 newTotalSupply ); /** * @dev Emitted when new stable debt is burned * @param from The address from which the debt will be burned * @param amount The amount being burned (user entered amount - balance increase from interest) * @param currentBalance The balance of the user based on the previous balance and balance increase from interest * @param balanceIncrease The increase in balance since the last action of 'from' * @param avgStableRate The next average stable rate after the burning * @param newTotalSupply The next total supply of the stable debt token after the action */ event Burn( address indexed from, uint256 amount, uint256 currentBalance, uint256 balanceIncrease, uint256 avgStableRate, uint256 newTotalSupply ); /** * @notice Mints debt token to the `onBehalfOf` address. * @dev The resulting rate is the weighted average between the rate of the new debt * and the rate of the previous debt * @param user The address receiving the borrowed underlying, being the delegatee in case * of credit delegate, or same as `onBehalfOf` otherwise * @param onBehalfOf The address receiving the debt tokens * @param amount The amount of debt tokens to mint * @param rate The rate of the debt being minted * @return True if it is the first borrow, false otherwise * @return The total stable debt * @return The average stable borrow rate */ function mint( address user, address onBehalfOf, uint256 amount, uint256 rate ) external returns (bool, uint256, uint256); /** * @notice Burns debt of `user` * @dev The resulting rate is the weighted average between the rate of the new debt * and the rate of the previous debt * @dev In some instances, a burn transaction will emit a mint event * if the amount to burn is less than the interest the user earned * @param from The address from which the debt will be burned * @param amount The amount of debt tokens getting burned * @return The total stable debt * @return The average stable borrow rate */ function burn(address from, uint256 amount) external returns (uint256, uint256); /** * @notice Returns the average rate of all the stable rate loans. * @return The average stable rate */ function getAverageStableRate() external view returns (uint256); /** * @notice Returns the stable rate of the user debt * @param user The address of the user * @return The stable rate of the user */ function getUserStableRate(address user) external view returns (uint256); /** * @notice Returns the timestamp of the last update of the user * @param user The address of the user * @return The timestamp */ function getUserLastUpdated(address user) external view returns (uint40); /** * @notice Returns the principal, the total supply, the average stable rate and the timestamp for the last update * @return The principal * @return The total supply * @return The average stable rate * @return The timestamp of the last update */ function getSupplyData() external view returns (uint256, uint256, uint256, uint40); /** * @notice Returns the timestamp of the last update of the total supply * @return The timestamp */ function getTotalSupplyLastUpdated() external view returns (uint40); /** * @notice Returns the total supply and the average stable rate * @return The total supply * @return The average rate */ function getTotalSupplyAndAvgRate() external view returns (uint256, uint256); /** * @notice Returns the principal debt balance of the user * @return The debt balance of the user since the last burn/mint action */ function principalBalanceOf(address user) external view returns (uint256); /** * @notice Returns the address of the underlying asset of this stableDebtToken (E.g. WETH for stableDebtWETH) * @return The address of the underlying asset */ function UNDERLYING_ASSET_ADDRESS() external view returns (address); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import {IScaledBalanceToken} from './IScaledBalanceToken.sol'; import {IInitializableDebtToken} from './IInitializableDebtToken.sol'; /** * @title IVariableDebtToken * @author Aave * @notice Defines the basic interface for a variable debt token. */ interface IVariableDebtToken is IScaledBalanceToken, IInitializableDebtToken { /** * @notice Mints debt token to the `onBehalfOf` address * @param user The address receiving the borrowed underlying, being the delegatee in case * of credit delegate, or same as `onBehalfOf` otherwise * @param onBehalfOf The address receiving the debt tokens * @param amount The amount of debt being minted * @param index The variable debt index of the reserve * @return True if the previous balance of the user is 0, false otherwise * @return The scaled total debt of the reserve */ function mint( address user, address onBehalfOf, uint256 amount, uint256 index ) external returns (bool, uint256); /** * @notice Burns user variable debt * @dev In some instances, a burn transaction will emit a mint event * if the amount to burn is less than the interest that the user accrued * @param from The address from which the debt will be burned * @param amount The amount getting burned * @param index The variable debt index of the reserve * @return The scaled total debt of the reserve */ function burn(address from, uint256 amount, uint256 index) external returns (uint256); /** * @notice Returns the address of the underlying asset of this debtToken (E.g. WETH for variableDebtWETH) * @return The address of the underlying asset */ function UNDERLYING_ASSET_ADDRESS() external view returns (address); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; /** * @title VersionedInitializable * @author Aave, inspired by the OpenZeppelin Initializable contract * @notice Helper contract to implement initializer functions. To use it, replace * the constructor with a function that has the `initializer` modifier. * @dev WARNING: Unlike constructors, initializer functions must be manually * invoked. This applies both to deploying an Initializable contract, as well * as extending an Initializable contract via inheritance. * WARNING: When used with inheritance, manual care must be taken to not invoke * a parent initializer twice, or ensure that all initializers are idempotent, * because this is not dealt with automatically as with constructors. */ abstract contract VersionedInitializable { /** * @dev Indicates that the contract has been initialized. */ uint256 private lastInitializedRevision = 0; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private initializing; /** * @dev Modifier to use in the initializer function of a contract. */ modifier initializer() { uint256 revision = getRevision(); require( initializing || isConstructor() || revision > lastInitializedRevision, 'Contract instance has already been initialized' ); bool isTopLevelCall = !initializing; if (isTopLevelCall) { initializing = true; lastInitializedRevision = revision; } _; if (isTopLevelCall) { initializing = false; } } /** * @notice Returns the revision number of the contract * @dev Needs to be defined in the inherited class as a constant. * @return The revision number */ function getRevision() internal pure virtual returns (uint256); /** * @notice Returns true if and only if the function is running in the constructor * @return True if the function is running in the constructor */ function isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. uint256 cs; //solium-disable-next-line assembly { cs := extcodesize(address()) } return cs == 0; } // Reserved storage space to allow for layout changes in the future. uint256[50] private ______gap; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; import {Errors} from '../helpers/Errors.sol'; import {DataTypes} from '../types/DataTypes.sol'; /** * @title ReserveConfiguration library * @author Aave * @notice Implements the bitmap logic to handle the reserve configuration */ library ReserveConfiguration { uint256 internal constant LTV_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000; // prettier-ignore uint256 internal constant LIQUIDATION_THRESHOLD_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFF; // prettier-ignore uint256 internal constant LIQUIDATION_BONUS_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFF; // prettier-ignore uint256 internal constant DECIMALS_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFF; // prettier-ignore uint256 internal constant ACTIVE_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant FROZEN_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant BORROWING_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant STABLE_BORROWING_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant PAUSED_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant BORROWABLE_IN_ISOLATION_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant SILOED_BORROWING_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant FLASHLOAN_ENABLED_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant RESERVE_FACTOR_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant BORROW_CAP_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000FFFFFFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant SUPPLY_CAP_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFF000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant LIQUIDATION_PROTOCOL_FEE_MASK = 0xFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant EMODE_CATEGORY_MASK = 0xFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant UNBACKED_MINT_CAP_MASK = 0xFFFFFFFFFFF000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore uint256 internal constant DEBT_CEILING_MASK = 0xF0000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore /// @dev For the LTV, the start bit is 0 (up to 15), hence no bitshifting is needed uint256 internal constant LIQUIDATION_THRESHOLD_START_BIT_POSITION = 16; uint256 internal constant LIQUIDATION_BONUS_START_BIT_POSITION = 32; uint256 internal constant RESERVE_DECIMALS_START_BIT_POSITION = 48; uint256 internal constant IS_ACTIVE_START_BIT_POSITION = 56; uint256 internal constant IS_FROZEN_START_BIT_POSITION = 57; uint256 internal constant BORROWING_ENABLED_START_BIT_POSITION = 58; uint256 internal constant STABLE_BORROWING_ENABLED_START_BIT_POSITION = 59; uint256 internal constant IS_PAUSED_START_BIT_POSITION = 60; uint256 internal constant BORROWABLE_IN_ISOLATION_START_BIT_POSITION = 61; uint256 internal constant SILOED_BORROWING_START_BIT_POSITION = 62; uint256 internal constant FLASHLOAN_ENABLED_START_BIT_POSITION = 63; uint256 internal constant RESERVE_FACTOR_START_BIT_POSITION = 64; uint256 internal constant BORROW_CAP_START_BIT_POSITION = 80; uint256 internal constant SUPPLY_CAP_START_BIT_POSITION = 116; uint256 internal constant LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION = 152; uint256 internal constant EMODE_CATEGORY_START_BIT_POSITION = 168; uint256 internal constant UNBACKED_MINT_CAP_START_BIT_POSITION = 176; uint256 internal constant DEBT_CEILING_START_BIT_POSITION = 212; uint256 internal constant MAX_VALID_LTV = 65535; uint256 internal constant MAX_VALID_LIQUIDATION_THRESHOLD = 65535; uint256 internal constant MAX_VALID_LIQUIDATION_BONUS = 65535; uint256 internal constant MAX_VALID_DECIMALS = 255; uint256 internal constant MAX_VALID_RESERVE_FACTOR = 65535; uint256 internal constant MAX_VALID_BORROW_CAP = 68719476735; uint256 internal constant MAX_VALID_SUPPLY_CAP = 68719476735; uint256 internal constant MAX_VALID_LIQUIDATION_PROTOCOL_FEE = 65535; uint256 internal constant MAX_VALID_EMODE_CATEGORY = 255; uint256 internal constant MAX_VALID_UNBACKED_MINT_CAP = 68719476735; uint256 internal constant MAX_VALID_DEBT_CEILING = 1099511627775; uint256 public constant DEBT_CEILING_DECIMALS = 2; uint16 public constant MAX_RESERVES_COUNT = 128; /** * @notice Sets the Loan to Value of the reserve * @param self The reserve configuration * @param ltv The new ltv */ function setLtv(DataTypes.ReserveConfigurationMap memory self, uint256 ltv) internal pure { require(ltv <= MAX_VALID_LTV, Errors.INVALID_LTV); self.data = (self.data & LTV_MASK) | ltv; } /** * @notice Gets the Loan to Value of the reserve * @param self The reserve configuration * @return The loan to value */ function getLtv(DataTypes.ReserveConfigurationMap memory self) internal pure returns (uint256) { return self.data & ~LTV_MASK; } /** * @notice Sets the liquidation threshold of the reserve * @param self The reserve configuration * @param threshold The new liquidation threshold */ function setLiquidationThreshold( DataTypes.ReserveConfigurationMap memory self, uint256 threshold ) internal pure { require(threshold <= MAX_VALID_LIQUIDATION_THRESHOLD, Errors.INVALID_LIQ_THRESHOLD); self.data = (self.data & LIQUIDATION_THRESHOLD_MASK) | (threshold << LIQUIDATION_THRESHOLD_START_BIT_POSITION); } /** * @notice Gets the liquidation threshold of the reserve * @param self The reserve configuration * @return The liquidation threshold */ function getLiquidationThreshold( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION; } /** * @notice Sets the liquidation bonus of the reserve * @param self The reserve configuration * @param bonus The new liquidation bonus */ function setLiquidationBonus( DataTypes.ReserveConfigurationMap memory self, uint256 bonus ) internal pure { require(bonus <= MAX_VALID_LIQUIDATION_BONUS, Errors.INVALID_LIQ_BONUS); self.data = (self.data & LIQUIDATION_BONUS_MASK) | (bonus << LIQUIDATION_BONUS_START_BIT_POSITION); } /** * @notice Gets the liquidation bonus of the reserve * @param self The reserve configuration * @return The liquidation bonus */ function getLiquidationBonus( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION; } /** * @notice Sets the decimals of the underlying asset of the reserve * @param self The reserve configuration * @param decimals The decimals */ function setDecimals( DataTypes.ReserveConfigurationMap memory self, uint256 decimals ) internal pure { require(decimals <= MAX_VALID_DECIMALS, Errors.INVALID_DECIMALS); self.data = (self.data & DECIMALS_MASK) | (decimals << RESERVE_DECIMALS_START_BIT_POSITION); } /** * @notice Gets the decimals of the underlying asset of the reserve * @param self The reserve configuration * @return The decimals of the asset */ function getDecimals( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION; } /** * @notice Sets the active state of the reserve * @param self The reserve configuration * @param active The active state */ function setActive(DataTypes.ReserveConfigurationMap memory self, bool active) internal pure { self.data = (self.data & ACTIVE_MASK) | (uint256(active ? 1 : 0) << IS_ACTIVE_START_BIT_POSITION); } /** * @notice Gets the active state of the reserve * @param self The reserve configuration * @return The active state */ function getActive(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & ~ACTIVE_MASK) != 0; } /** * @notice Sets the frozen state of the reserve * @param self The reserve configuration * @param frozen The frozen state */ function setFrozen(DataTypes.ReserveConfigurationMap memory self, bool frozen) internal pure { self.data = (self.data & FROZEN_MASK) | (uint256(frozen ? 1 : 0) << IS_FROZEN_START_BIT_POSITION); } /** * @notice Gets the frozen state of the reserve * @param self The reserve configuration * @return The frozen state */ function getFrozen(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & ~FROZEN_MASK) != 0; } /** * @notice Sets the paused state of the reserve * @param self The reserve configuration * @param paused The paused state */ function setPaused(DataTypes.ReserveConfigurationMap memory self, bool paused) internal pure { self.data = (self.data & PAUSED_MASK) | (uint256(paused ? 1 : 0) << IS_PAUSED_START_BIT_POSITION); } /** * @notice Gets the paused state of the reserve * @param self The reserve configuration * @return The paused state */ function getPaused(DataTypes.ReserveConfigurationMap memory self) internal pure returns (bool) { return (self.data & ~PAUSED_MASK) != 0; } /** * @notice Sets the borrowable in isolation flag for the reserve. * @dev When this flag is set to true, the asset will be borrowable against isolated collaterals and the borrowed * amount will be accumulated in the isolated collateral's total debt exposure. * @dev Only assets of the same family (eg USD stablecoins) should be borrowable in isolation mode to keep * consistency in the debt ceiling calculations. * @param self The reserve configuration * @param borrowable True if the asset is borrowable */ function setBorrowableInIsolation( DataTypes.ReserveConfigurationMap memory self, bool borrowable ) internal pure { self.data = (self.data & BORROWABLE_IN_ISOLATION_MASK) | (uint256(borrowable ? 1 : 0) << BORROWABLE_IN_ISOLATION_START_BIT_POSITION); } /** * @notice Gets the borrowable in isolation flag for the reserve. * @dev If the returned flag is true, the asset is borrowable against isolated collateral. Assets borrowed with * isolated collateral is accounted for in the isolated collateral's total debt exposure. * @dev Only assets of the same family (eg USD stablecoins) should be borrowable in isolation mode to keep * consistency in the debt ceiling calculations. * @param self The reserve configuration * @return The borrowable in isolation flag */ function getBorrowableInIsolation( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & ~BORROWABLE_IN_ISOLATION_MASK) != 0; } /** * @notice Sets the siloed borrowing flag for the reserve. * @dev When this flag is set to true, users borrowing this asset will not be allowed to borrow any other asset. * @param self The reserve configuration * @param siloed True if the asset is siloed */ function setSiloedBorrowing( DataTypes.ReserveConfigurationMap memory self, bool siloed ) internal pure { self.data = (self.data & SILOED_BORROWING_MASK) | (uint256(siloed ? 1 : 0) << SILOED_BORROWING_START_BIT_POSITION); } /** * @notice Gets the siloed borrowing flag for the reserve. * @dev When this flag is set to true, users borrowing this asset will not be allowed to borrow any other asset. * @param self The reserve configuration * @return The siloed borrowing flag */ function getSiloedBorrowing( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & ~SILOED_BORROWING_MASK) != 0; } /** * @notice Enables or disables borrowing on the reserve * @param self The reserve configuration * @param enabled True if the borrowing needs to be enabled, false otherwise */ function setBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self, bool enabled ) internal pure { self.data = (self.data & BORROWING_MASK) | (uint256(enabled ? 1 : 0) << BORROWING_ENABLED_START_BIT_POSITION); } /** * @notice Gets the borrowing state of the reserve * @param self The reserve configuration * @return The borrowing state */ function getBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & ~BORROWING_MASK) != 0; } /** * @notice Enables or disables stable rate borrowing on the reserve * @param self The reserve configuration * @param enabled True if the stable rate borrowing needs to be enabled, false otherwise */ function setStableRateBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self, bool enabled ) internal pure { self.data = (self.data & STABLE_BORROWING_MASK) | (uint256(enabled ? 1 : 0) << STABLE_BORROWING_ENABLED_START_BIT_POSITION); } /** * @notice Gets the stable rate borrowing state of the reserve * @param self The reserve configuration * @return The stable rate borrowing state */ function getStableRateBorrowingEnabled( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & ~STABLE_BORROWING_MASK) != 0; } /** * @notice Sets the reserve factor of the reserve * @param self The reserve configuration * @param reserveFactor The reserve factor */ function setReserveFactor( DataTypes.ReserveConfigurationMap memory self, uint256 reserveFactor ) internal pure { require(reserveFactor <= MAX_VALID_RESERVE_FACTOR, Errors.INVALID_RESERVE_FACTOR); self.data = (self.data & RESERVE_FACTOR_MASK) | (reserveFactor << RESERVE_FACTOR_START_BIT_POSITION); } /** * @notice Gets the reserve factor of the reserve * @param self The reserve configuration * @return The reserve factor */ function getReserveFactor( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION; } /** * @notice Sets the borrow cap of the reserve * @param self The reserve configuration * @param borrowCap The borrow cap */ function setBorrowCap( DataTypes.ReserveConfigurationMap memory self, uint256 borrowCap ) internal pure { require(borrowCap <= MAX_VALID_BORROW_CAP, Errors.INVALID_BORROW_CAP); self.data = (self.data & BORROW_CAP_MASK) | (borrowCap << BORROW_CAP_START_BIT_POSITION); } /** * @notice Gets the borrow cap of the reserve * @param self The reserve configuration * @return The borrow cap */ function getBorrowCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~BORROW_CAP_MASK) >> BORROW_CAP_START_BIT_POSITION; } /** * @notice Sets the supply cap of the reserve * @param self The reserve configuration * @param supplyCap The supply cap */ function setSupplyCap( DataTypes.ReserveConfigurationMap memory self, uint256 supplyCap ) internal pure { require(supplyCap <= MAX_VALID_SUPPLY_CAP, Errors.INVALID_SUPPLY_CAP); self.data = (self.data & SUPPLY_CAP_MASK) | (supplyCap << SUPPLY_CAP_START_BIT_POSITION); } /** * @notice Gets the supply cap of the reserve * @param self The reserve configuration * @return The supply cap */ function getSupplyCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~SUPPLY_CAP_MASK) >> SUPPLY_CAP_START_BIT_POSITION; } /** * @notice Sets the debt ceiling in isolation mode for the asset * @param self The reserve configuration * @param ceiling The maximum debt ceiling for the asset */ function setDebtCeiling( DataTypes.ReserveConfigurationMap memory self, uint256 ceiling ) internal pure { require(ceiling <= MAX_VALID_DEBT_CEILING, Errors.INVALID_DEBT_CEILING); self.data = (self.data & DEBT_CEILING_MASK) | (ceiling << DEBT_CEILING_START_BIT_POSITION); } /** * @notice Gets the debt ceiling for the asset if the asset is in isolation mode * @param self The reserve configuration * @return The debt ceiling (0 = isolation mode disabled) */ function getDebtCeiling( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~DEBT_CEILING_MASK) >> DEBT_CEILING_START_BIT_POSITION; } /** * @notice Sets the liquidation protocol fee of the reserve * @param self The reserve configuration * @param liquidationProtocolFee The liquidation protocol fee */ function setLiquidationProtocolFee( DataTypes.ReserveConfigurationMap memory self, uint256 liquidationProtocolFee ) internal pure { require( liquidationProtocolFee <= MAX_VALID_LIQUIDATION_PROTOCOL_FEE, Errors.INVALID_LIQUIDATION_PROTOCOL_FEE ); self.data = (self.data & LIQUIDATION_PROTOCOL_FEE_MASK) | (liquidationProtocolFee << LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION); } /** * @dev Gets the liquidation protocol fee * @param self The reserve configuration * @return The liquidation protocol fee */ function getLiquidationProtocolFee( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~LIQUIDATION_PROTOCOL_FEE_MASK) >> LIQUIDATION_PROTOCOL_FEE_START_BIT_POSITION; } /** * @notice Sets the unbacked mint cap of the reserve * @param self The reserve configuration * @param unbackedMintCap The unbacked mint cap */ function setUnbackedMintCap( DataTypes.ReserveConfigurationMap memory self, uint256 unbackedMintCap ) internal pure { require(unbackedMintCap <= MAX_VALID_UNBACKED_MINT_CAP, Errors.INVALID_UNBACKED_MINT_CAP); self.data = (self.data & UNBACKED_MINT_CAP_MASK) | (unbackedMintCap << UNBACKED_MINT_CAP_START_BIT_POSITION); } /** * @dev Gets the unbacked mint cap of the reserve * @param self The reserve configuration * @return The unbacked mint cap */ function getUnbackedMintCap( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~UNBACKED_MINT_CAP_MASK) >> UNBACKED_MINT_CAP_START_BIT_POSITION; } /** * @notice Sets the eMode asset category * @param self The reserve configuration * @param category The asset category when the user selects the eMode */ function setEModeCategory( DataTypes.ReserveConfigurationMap memory self, uint256 category ) internal pure { require(category <= MAX_VALID_EMODE_CATEGORY, Errors.INVALID_EMODE_CATEGORY); self.data = (self.data & EMODE_CATEGORY_MASK) | (category << EMODE_CATEGORY_START_BIT_POSITION); } /** * @dev Gets the eMode asset category * @param self The reserve configuration * @return The eMode category for the asset */ function getEModeCategory( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256) { return (self.data & ~EMODE_CATEGORY_MASK) >> EMODE_CATEGORY_START_BIT_POSITION; } /** * @notice Sets the flashloanable flag for the reserve * @param self The reserve configuration * @param flashLoanEnabled True if the asset is flashloanable, false otherwise */ function setFlashLoanEnabled( DataTypes.ReserveConfigurationMap memory self, bool flashLoanEnabled ) internal pure { self.data = (self.data & FLASHLOAN_ENABLED_MASK) | (uint256(flashLoanEnabled ? 1 : 0) << FLASHLOAN_ENABLED_START_BIT_POSITION); } /** * @notice Gets the flashloanable flag for the reserve * @param self The reserve configuration * @return The flashloanable flag */ function getFlashLoanEnabled( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool) { return (self.data & ~FLASHLOAN_ENABLED_MASK) != 0; } /** * @notice Gets the configuration flags of the reserve * @param self The reserve configuration * @return The state flag representing active * @return The state flag representing frozen * @return The state flag representing borrowing enabled * @return The state flag representing stableRateBorrowing enabled * @return The state flag representing paused */ function getFlags( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (bool, bool, bool, bool, bool) { uint256 dataLocal = self.data; return ( (dataLocal & ~ACTIVE_MASK) != 0, (dataLocal & ~FROZEN_MASK) != 0, (dataLocal & ~BORROWING_MASK) != 0, (dataLocal & ~STABLE_BORROWING_MASK) != 0, (dataLocal & ~PAUSED_MASK) != 0 ); } /** * @notice Gets the configuration parameters of the reserve from storage * @param self The reserve configuration * @return The state param representing ltv * @return The state param representing liquidation threshold * @return The state param representing liquidation bonus * @return The state param representing reserve decimals * @return The state param representing reserve factor * @return The state param representing eMode category */ function getParams( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256, uint256, uint256, uint256, uint256, uint256) { uint256 dataLocal = self.data; return ( dataLocal & ~LTV_MASK, (dataLocal & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION, (dataLocal & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION, (dataLocal & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION, (dataLocal & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION, (dataLocal & ~EMODE_CATEGORY_MASK) >> EMODE_CATEGORY_START_BIT_POSITION ); } /** * @notice Gets the caps parameters of the reserve from storage * @param self The reserve configuration * @return The state param representing borrow cap * @return The state param representing supply cap. */ function getCaps( DataTypes.ReserveConfigurationMap memory self ) internal pure returns (uint256, uint256) { uint256 dataLocal = self.data; return ( (dataLocal & ~BORROW_CAP_MASK) >> BORROW_CAP_START_BIT_POSITION, (dataLocal & ~SUPPLY_CAP_MASK) >> SUPPLY_CAP_START_BIT_POSITION ); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; import {Errors} from '../helpers/Errors.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ReserveConfiguration} from './ReserveConfiguration.sol'; /** * @title UserConfiguration library * @author Aave * @notice Implements the bitmap logic to handle the user configuration */ library UserConfiguration { using ReserveConfiguration for DataTypes.ReserveConfigurationMap; uint256 internal constant BORROWING_MASK = 0x5555555555555555555555555555555555555555555555555555555555555555; uint256 internal constant COLLATERAL_MASK = 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA; /** * @notice Sets if the user is borrowing the reserve identified by reserveIndex * @param self The configuration object * @param reserveIndex The index of the reserve in the bitmap * @param borrowing True if the user is borrowing the reserve, false otherwise */ function setBorrowing( DataTypes.UserConfigurationMap storage self, uint256 reserveIndex, bool borrowing ) internal { unchecked { require(reserveIndex < ReserveConfiguration.MAX_RESERVES_COUNT, Errors.INVALID_RESERVE_INDEX); uint256 bit = 1 << (reserveIndex << 1); if (borrowing) { self.data |= bit; } else { self.data &= ~bit; } } } /** * @notice Sets if the user is using as collateral the reserve identified by reserveIndex * @param self The configuration object * @param reserveIndex The index of the reserve in the bitmap * @param usingAsCollateral True if the user is using the reserve as collateral, false otherwise */ function setUsingAsCollateral( DataTypes.UserConfigurationMap storage self, uint256 reserveIndex, bool usingAsCollateral ) internal { unchecked { require(reserveIndex < ReserveConfiguration.MAX_RESERVES_COUNT, Errors.INVALID_RESERVE_INDEX); uint256 bit = 1 << ((reserveIndex << 1) + 1); if (usingAsCollateral) { self.data |= bit; } else { self.data &= ~bit; } } } /** * @notice Returns if a user has been using the reserve for borrowing or as collateral * @param self The configuration object * @param reserveIndex The index of the reserve in the bitmap * @return True if the user has been using a reserve for borrowing or as collateral, false otherwise */ function isUsingAsCollateralOrBorrowing( DataTypes.UserConfigurationMap memory self, uint256 reserveIndex ) internal pure returns (bool) { unchecked { require(reserveIndex < ReserveConfiguration.MAX_RESERVES_COUNT, Errors.INVALID_RESERVE_INDEX); return (self.data >> (reserveIndex << 1)) & 3 != 0; } } /** * @notice Validate a user has been using the reserve for borrowing * @param self The configuration object * @param reserveIndex The index of the reserve in the bitmap * @return True if the user has been using a reserve for borrowing, false otherwise */ function isBorrowing( DataTypes.UserConfigurationMap memory self, uint256 reserveIndex ) internal pure returns (bool) { unchecked { require(reserveIndex < ReserveConfiguration.MAX_RESERVES_COUNT, Errors.INVALID_RESERVE_INDEX); return (self.data >> (reserveIndex << 1)) & 1 != 0; } } /** * @notice Validate a user has been using the reserve as collateral * @param self The configuration object * @param reserveIndex The index of the reserve in the bitmap * @return True if the user has been using a reserve as collateral, false otherwise */ function isUsingAsCollateral( DataTypes.UserConfigurationMap memory self, uint256 reserveIndex ) internal pure returns (bool) { unchecked { require(reserveIndex < ReserveConfiguration.MAX_RESERVES_COUNT, Errors.INVALID_RESERVE_INDEX); return (self.data >> ((reserveIndex << 1) + 1)) & 1 != 0; } } /** * @notice Checks if a user has been supplying only one reserve as collateral * @dev this uses a simple trick - if a number is a power of two (only one bit set) then n & (n - 1) == 0 * @param self The configuration object * @return True if the user has been supplying as collateral one reserve, false otherwise */ function isUsingAsCollateralOne( DataTypes.UserConfigurationMap memory self ) internal pure returns (bool) { uint256 collateralData = self.data & COLLATERAL_MASK; return collateralData != 0 && (collateralData & (collateralData - 1) == 0); } /** * @notice Checks if a user has been supplying any reserve as collateral * @param self The configuration object * @return True if the user has been supplying as collateral any reserve, false otherwise */ function isUsingAsCollateralAny( DataTypes.UserConfigurationMap memory self ) internal pure returns (bool) { return self.data & COLLATERAL_MASK != 0; } /** * @notice Checks if a user has been borrowing only one asset * @dev this uses a simple trick - if a number is a power of two (only one bit set) then n & (n - 1) == 0 * @param self The configuration object * @return True if the user has been supplying as collateral one reserve, false otherwise */ function isBorrowingOne(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) { uint256 borrowingData = self.data & BORROWING_MASK; return borrowingData != 0 && (borrowingData & (borrowingData - 1) == 0); } /** * @notice Checks if a user has been borrowing from any reserve * @param self The configuration object * @return True if the user has been borrowing any reserve, false otherwise */ function isBorrowingAny(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) { return self.data & BORROWING_MASK != 0; } /** * @notice Checks if a user has not been using any reserve for borrowing or supply * @param self The configuration object * @return True if the user has not been borrowing or supplying any reserve, false otherwise */ function isEmpty(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) { return self.data == 0; } /** * @notice Returns the Isolation Mode state of the user * @param self The configuration object * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @return True if the user is in isolation mode, false otherwise * @return The address of the only asset used as collateral * @return The debt ceiling of the reserve */ function getIsolationModeState( DataTypes.UserConfigurationMap memory self, mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList ) internal view returns (bool, address, uint256) { if (isUsingAsCollateralOne(self)) { uint256 assetId = _getFirstAssetIdByMask(self, COLLATERAL_MASK); address assetAddress = reservesList[assetId]; uint256 ceiling = reservesData[assetAddress].configuration.getDebtCeiling(); if (ceiling != 0) { return (true, assetAddress, ceiling); } } return (false, address(0), 0); } /** * @notice Returns the siloed borrowing state for the user * @param self The configuration object * @param reservesData The data of all the reserves * @param reservesList The reserve list * @return True if the user has borrowed a siloed asset, false otherwise * @return The address of the only borrowed asset */ function getSiloedBorrowingState( DataTypes.UserConfigurationMap memory self, mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList ) internal view returns (bool, address) { if (isBorrowingOne(self)) { uint256 assetId = _getFirstAssetIdByMask(self, BORROWING_MASK); address assetAddress = reservesList[assetId]; if (reservesData[assetAddress].configuration.getSiloedBorrowing()) { return (true, assetAddress); } } return (false, address(0)); } /** * @notice Returns the address of the first asset flagged in the bitmap given the corresponding bitmask * @param self The configuration object * @return The index of the first asset flagged in the bitmap once the corresponding mask is applied */ function _getFirstAssetIdByMask( DataTypes.UserConfigurationMap memory self, uint256 mask ) internal pure returns (uint256) { unchecked { uint256 bitmapData = self.data & mask; uint256 firstAssetPosition = bitmapData & ~(bitmapData - 1); uint256 id; while ((firstAssetPosition >>= 2) != 0) { id += 1; } return id; } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; /** * @title Errors library * @author Aave * @notice Defines the error messages emitted by the different contracts of the Aave protocol */ library Errors { string public constant CALLER_NOT_POOL_ADMIN = '1'; // 'The caller of the function is not a pool admin' string public constant CALLER_NOT_EMERGENCY_ADMIN = '2'; // 'The caller of the function is not an emergency admin' string public constant CALLER_NOT_POOL_OR_EMERGENCY_ADMIN = '3'; // 'The caller of the function is not a pool or emergency admin' string public constant CALLER_NOT_RISK_OR_POOL_ADMIN = '4'; // 'The caller of the function is not a risk or pool admin' string public constant CALLER_NOT_ASSET_LISTING_OR_POOL_ADMIN = '5'; // 'The caller of the function is not an asset listing or pool admin' string public constant CALLER_NOT_BRIDGE = '6'; // 'The caller of the function is not a bridge' string public constant ADDRESSES_PROVIDER_NOT_REGISTERED = '7'; // 'Pool addresses provider is not registered' string public constant INVALID_ADDRESSES_PROVIDER_ID = '8'; // 'Invalid id for the pool addresses provider' string public constant NOT_CONTRACT = '9'; // 'Address is not a contract' string public constant CALLER_NOT_POOL_CONFIGURATOR = '10'; // 'The caller of the function is not the pool configurator' string public constant CALLER_NOT_ATOKEN = '11'; // 'The caller of the function is not an AToken' string public constant INVALID_ADDRESSES_PROVIDER = '12'; // 'The address of the pool addresses provider is invalid' string public constant INVALID_FLASHLOAN_EXECUTOR_RETURN = '13'; // 'Invalid return value of the flashloan executor function' string public constant RESERVE_ALREADY_ADDED = '14'; // 'Reserve has already been added to reserve list' string public constant NO_MORE_RESERVES_ALLOWED = '15'; // 'Maximum amount of reserves in the pool reached' string public constant EMODE_CATEGORY_RESERVED = '16'; // 'Zero eMode category is reserved for volatile heterogeneous assets' string public constant INVALID_EMODE_CATEGORY_ASSIGNMENT = '17'; // 'Invalid eMode category assignment to asset' string public constant RESERVE_LIQUIDITY_NOT_ZERO = '18'; // 'The liquidity of the reserve needs to be 0' string public constant FLASHLOAN_PREMIUM_INVALID = '19'; // 'Invalid flashloan premium' string public constant INVALID_RESERVE_PARAMS = '20'; // 'Invalid risk parameters for the reserve' string public constant INVALID_EMODE_CATEGORY_PARAMS = '21'; // 'Invalid risk parameters for the eMode category' string public constant BRIDGE_PROTOCOL_FEE_INVALID = '22'; // 'Invalid bridge protocol fee' string public constant CALLER_MUST_BE_POOL = '23'; // 'The caller of this function must be a pool' string public constant INVALID_MINT_AMOUNT = '24'; // 'Invalid amount to mint' string public constant INVALID_BURN_AMOUNT = '25'; // 'Invalid amount to burn' string public constant INVALID_AMOUNT = '26'; // 'Amount must be greater than 0' string public constant RESERVE_INACTIVE = '27'; // 'Action requires an active reserve' string public constant RESERVE_FROZEN = '28'; // 'Action cannot be performed because the reserve is frozen' string public constant RESERVE_PAUSED = '29'; // 'Action cannot be performed because the reserve is paused' string public constant BORROWING_NOT_ENABLED = '30'; // 'Borrowing is not enabled' string public constant STABLE_BORROWING_NOT_ENABLED = '31'; // 'Stable borrowing is not enabled' string public constant NOT_ENOUGH_AVAILABLE_USER_BALANCE = '32'; // 'User cannot withdraw more than the available balance' string public constant INVALID_INTEREST_RATE_MODE_SELECTED = '33'; // 'Invalid interest rate mode selected' string public constant COLLATERAL_BALANCE_IS_ZERO = '34'; // 'The collateral balance is 0' string public constant HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD = '35'; // 'Health factor is lesser than the liquidation threshold' string public constant COLLATERAL_CANNOT_COVER_NEW_BORROW = '36'; // 'There is not enough collateral to cover a new borrow' string public constant COLLATERAL_SAME_AS_BORROWING_CURRENCY = '37'; // 'Collateral is (mostly) the same currency that is being borrowed' string public constant AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE = '38'; // 'The requested amount is greater than the max loan size in stable rate mode' string public constant NO_DEBT_OF_SELECTED_TYPE = '39'; // 'For repayment of a specific type of debt, the user needs to have debt that type' string public constant NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF = '40'; // 'To repay on behalf of a user an explicit amount to repay is needed' string public constant NO_OUTSTANDING_STABLE_DEBT = '41'; // 'User does not have outstanding stable rate debt on this reserve' string public constant NO_OUTSTANDING_VARIABLE_DEBT = '42'; // 'User does not have outstanding variable rate debt on this reserve' string public constant UNDERLYING_BALANCE_ZERO = '43'; // 'The underlying balance needs to be greater than 0' string public constant INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET = '44'; // 'Interest rate rebalance conditions were not met' string public constant HEALTH_FACTOR_NOT_BELOW_THRESHOLD = '45'; // 'Health factor is not below the threshold' string public constant COLLATERAL_CANNOT_BE_LIQUIDATED = '46'; // 'The collateral chosen cannot be liquidated' string public constant SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = '47'; // 'User did not borrow the specified currency' string public constant INCONSISTENT_FLASHLOAN_PARAMS = '49'; // 'Inconsistent flashloan parameters' string public constant BORROW_CAP_EXCEEDED = '50'; // 'Borrow cap is exceeded' string public constant SUPPLY_CAP_EXCEEDED = '51'; // 'Supply cap is exceeded' string public constant UNBACKED_MINT_CAP_EXCEEDED = '52'; // 'Unbacked mint cap is exceeded' string public constant DEBT_CEILING_EXCEEDED = '53'; // 'Debt ceiling is exceeded' string public constant UNDERLYING_CLAIMABLE_RIGHTS_NOT_ZERO = '54'; // 'Claimable rights over underlying not zero (aToken supply or accruedToTreasury)' string public constant STABLE_DEBT_NOT_ZERO = '55'; // 'Stable debt supply is not zero' string public constant VARIABLE_DEBT_SUPPLY_NOT_ZERO = '56'; // 'Variable debt supply is not zero' string public constant LTV_VALIDATION_FAILED = '57'; // 'Ltv validation failed' string public constant INCONSISTENT_EMODE_CATEGORY = '58'; // 'Inconsistent eMode category' string public constant PRICE_ORACLE_SENTINEL_CHECK_FAILED = '59'; // 'Price oracle sentinel validation failed' string public constant ASSET_NOT_BORROWABLE_IN_ISOLATION = '60'; // 'Asset is not borrowable in isolation mode' string public constant RESERVE_ALREADY_INITIALIZED = '61'; // 'Reserve has already been initialized' string public constant USER_IN_ISOLATION_MODE_OR_LTV_ZERO = '62'; // 'User is in isolation mode or ltv is zero' string public constant INVALID_LTV = '63'; // 'Invalid ltv parameter for the reserve' string public constant INVALID_LIQ_THRESHOLD = '64'; // 'Invalid liquidity threshold parameter for the reserve' string public constant INVALID_LIQ_BONUS = '65'; // 'Invalid liquidity bonus parameter for the reserve' string public constant INVALID_DECIMALS = '66'; // 'Invalid decimals parameter of the underlying asset of the reserve' string public constant INVALID_RESERVE_FACTOR = '67'; // 'Invalid reserve factor parameter for the reserve' string public constant INVALID_BORROW_CAP = '68'; // 'Invalid borrow cap for the reserve' string public constant INVALID_SUPPLY_CAP = '69'; // 'Invalid supply cap for the reserve' string public constant INVALID_LIQUIDATION_PROTOCOL_FEE = '70'; // 'Invalid liquidation protocol fee for the reserve' string public constant INVALID_EMODE_CATEGORY = '71'; // 'Invalid eMode category for the reserve' string public constant INVALID_UNBACKED_MINT_CAP = '72'; // 'Invalid unbacked mint cap for the reserve' string public constant INVALID_DEBT_CEILING = '73'; // 'Invalid debt ceiling for the reserve string public constant INVALID_RESERVE_INDEX = '74'; // 'Invalid reserve index' string public constant ACL_ADMIN_CANNOT_BE_ZERO = '75'; // 'ACL admin cannot be set to the zero address' string public constant INCONSISTENT_PARAMS_LENGTH = '76'; // 'Array parameters that should be equal length are not' string public constant ZERO_ADDRESS_NOT_VALID = '77'; // 'Zero address not valid' string public constant INVALID_EXPIRATION = '78'; // 'Invalid expiration' string public constant INVALID_SIGNATURE = '79'; // 'Invalid signature' string public constant OPERATION_NOT_SUPPORTED = '80'; // 'Operation not supported' string public constant DEBT_CEILING_NOT_ZERO = '81'; // 'Debt ceiling is not zero' string public constant ASSET_NOT_LISTED = '82'; // 'Asset is not listed' string public constant INVALID_OPTIMAL_USAGE_RATIO = '83'; // 'Invalid optimal usage ratio' string public constant INVALID_OPTIMAL_STABLE_TO_TOTAL_DEBT_RATIO = '84'; // 'Invalid optimal stable to total debt ratio' string public constant UNDERLYING_CANNOT_BE_RESCUED = '85'; // 'The underlying asset cannot be rescued' string public constant ADDRESSES_PROVIDER_ALREADY_ADDED = '86'; // 'Reserve has already been added to reserve list' string public constant POOL_ADDRESSES_DO_NOT_MATCH = '87'; // 'The token implementation pool address and the pool address provided by the initializing pool do not match' string public constant STABLE_BORROWING_ENABLED = '88'; // 'Stable borrowing is enabled' string public constant SILOED_BORROWING_VIOLATION = '89'; // 'User is trying to borrow multiple assets including a siloed one' string public constant RESERVE_DEBT_NOT_ZERO = '90'; // the total debt of the reserve needs to be 0 string public constant FLASHLOAN_DISABLED = '91'; // FlashLoaning for this asset is disabled }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {DataTypes} from '../types/DataTypes.sol'; /** * @title Helpers library * @author Aave */ library Helpers { /** * @notice Fetches the user current stable and variable debt balances * @param user The user address * @param reserveCache The reserve cache data object * @return The stable debt balance * @return The variable debt balance */ function getUserCurrentDebt( address user, DataTypes.ReserveCache memory reserveCache ) internal view returns (uint256, uint256) { return ( IERC20(reserveCache.stableDebtTokenAddress).balanceOf(user), IERC20(reserveCache.variableDebtTokenAddress).balanceOf(user) ); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IStableDebtToken} from '../../../interfaces/IStableDebtToken.sol'; import {IVariableDebtToken} from '../../../interfaces/IVariableDebtToken.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {Helpers} from '../helpers/Helpers.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {IsolationModeLogic} from './IsolationModeLogic.sol'; /** * @title BorrowLogic library * @author Aave * @notice Implements the base logic for all the actions related to borrowing */ library BorrowLogic { using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using GPv2SafeERC20 for IERC20; using UserConfiguration for DataTypes.UserConfigurationMap; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using SafeCast for uint256; // See `IPool` for descriptions event Borrow( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 borrowRate, uint16 indexed referralCode ); event Repay( address indexed reserve, address indexed user, address indexed repayer, uint256 amount, bool useATokens ); event RebalanceStableBorrowRate(address indexed reserve, address indexed user); event SwapBorrowRateMode( address indexed reserve, address indexed user, DataTypes.InterestRateMode interestRateMode ); event IsolationModeTotalDebtUpdated(address indexed asset, uint256 totalDebt); /** * @notice Implements the borrow feature. Borrowing allows users that provided collateral to draw liquidity from the * Aave protocol proportionally to their collateralization power. For isolated positions, it also increases the * isolated debt. * @dev Emits the `Borrow()` event * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the borrow function */ function executeBorrow( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ExecuteBorrowParams memory params ) public { DataTypes.ReserveData storage reserve = reservesData[params.asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); ( bool isolationModeActive, address isolationModeCollateralAddress, uint256 isolationModeDebtCeiling ) = userConfig.getIsolationModeState(reservesData, reservesList); ValidationLogic.validateBorrow( reservesData, reservesList, eModeCategories, DataTypes.ValidateBorrowParams({ reserveCache: reserveCache, userConfig: userConfig, asset: params.asset, userAddress: params.onBehalfOf, amount: params.amount, interestRateMode: params.interestRateMode, maxStableLoanPercent: params.maxStableRateBorrowSizePercent, reservesCount: params.reservesCount, oracle: params.oracle, userEModeCategory: params.userEModeCategory, priceOracleSentinel: params.priceOracleSentinel, isolationModeActive: isolationModeActive, isolationModeCollateralAddress: isolationModeCollateralAddress, isolationModeDebtCeiling: isolationModeDebtCeiling }) ); uint256 currentStableRate = 0; bool isFirstBorrowing = false; if (params.interestRateMode == DataTypes.InterestRateMode.STABLE) { currentStableRate = reserve.currentStableBorrowRate; ( isFirstBorrowing, reserveCache.nextTotalStableDebt, reserveCache.nextAvgStableBorrowRate ) = IStableDebtToken(reserveCache.stableDebtTokenAddress).mint( params.user, params.onBehalfOf, params.amount, currentStableRate ); } else { (isFirstBorrowing, reserveCache.nextScaledVariableDebt) = IVariableDebtToken( reserveCache.variableDebtTokenAddress ).mint(params.user, params.onBehalfOf, params.amount, reserveCache.nextVariableBorrowIndex); } if (isFirstBorrowing) { userConfig.setBorrowing(reserve.id, true); } if (isolationModeActive) { uint256 nextIsolationModeTotalDebt = reservesData[isolationModeCollateralAddress] .isolationModeTotalDebt += (params.amount / 10 ** (reserveCache.reserveConfiguration.getDecimals() - ReserveConfiguration.DEBT_CEILING_DECIMALS)).toUint128(); emit IsolationModeTotalDebtUpdated( isolationModeCollateralAddress, nextIsolationModeTotalDebt ); } reserve.updateInterestRates( reserveCache, params.asset, 0, params.releaseUnderlying ? params.amount : 0 ); if (params.releaseUnderlying) { IAToken(reserveCache.aTokenAddress).transferUnderlyingTo(params.user, params.amount); } emit Borrow( params.asset, params.user, params.onBehalfOf, params.amount, params.interestRateMode, params.interestRateMode == DataTypes.InterestRateMode.STABLE ? currentStableRate : reserve.currentVariableBorrowRate, params.referralCode ); } /** * @notice Implements the repay feature. Repaying transfers the underlying back to the aToken and clears the * equivalent amount of debt for the user by burning the corresponding debt token. For isolated positions, it also * reduces the isolated debt. * @dev Emits the `Repay()` event * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the repay function * @return The actual amount being repaid */ function executeRepay( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ExecuteRepayParams memory params ) external returns (uint256) { DataTypes.ReserveData storage reserve = reservesData[params.asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); (uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt( params.onBehalfOf, reserveCache ); ValidationLogic.validateRepay( reserveCache, params.amount, params.interestRateMode, params.onBehalfOf, stableDebt, variableDebt ); uint256 paybackAmount = params.interestRateMode == DataTypes.InterestRateMode.STABLE ? stableDebt : variableDebt; // Allows a user to repay with aTokens without leaving dust from interest. if (params.useATokens && params.amount == type(uint256).max) { params.amount = IAToken(reserveCache.aTokenAddress).balanceOf(msg.sender); } if (params.amount < paybackAmount) { paybackAmount = params.amount; } if (params.interestRateMode == DataTypes.InterestRateMode.STABLE) { (reserveCache.nextTotalStableDebt, reserveCache.nextAvgStableBorrowRate) = IStableDebtToken( reserveCache.stableDebtTokenAddress ).burn(params.onBehalfOf, paybackAmount); } else { reserveCache.nextScaledVariableDebt = IVariableDebtToken( reserveCache.variableDebtTokenAddress ).burn(params.onBehalfOf, paybackAmount, reserveCache.nextVariableBorrowIndex); } reserve.updateInterestRates( reserveCache, params.asset, params.useATokens ? 0 : paybackAmount, 0 ); if (stableDebt + variableDebt - paybackAmount == 0) { userConfig.setBorrowing(reserve.id, false); } IsolationModeLogic.updateIsolatedDebtIfIsolated( reservesData, reservesList, userConfig, reserveCache, paybackAmount ); if (params.useATokens) { IAToken(reserveCache.aTokenAddress).burn( msg.sender, reserveCache.aTokenAddress, paybackAmount, reserveCache.nextLiquidityIndex ); } else { IERC20(params.asset).safeTransferFrom(msg.sender, reserveCache.aTokenAddress, paybackAmount); IAToken(reserveCache.aTokenAddress).handleRepayment( msg.sender, params.onBehalfOf, paybackAmount ); } emit Repay(params.asset, params.onBehalfOf, msg.sender, paybackAmount, params.useATokens); return paybackAmount; } /** * @notice Implements the rebalance stable borrow rate feature. In case of liquidity crunches on the protocol, stable * rate borrows might need to be rebalanced to bring back equilibrium between the borrow and supply APYs. * @dev The rules that define if a position can be rebalanced are implemented in `ValidationLogic.validateRebalanceStableBorrowRate()` * @dev Emits the `RebalanceStableBorrowRate()` event * @param reserve The state of the reserve of the asset being repaid * @param asset The asset of the position being rebalanced * @param user The user being rebalanced */ function executeRebalanceStableBorrowRate( DataTypes.ReserveData storage reserve, address asset, address user ) external { DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); ValidationLogic.validateRebalanceStableBorrowRate(reserve, reserveCache, asset); IStableDebtToken stableDebtToken = IStableDebtToken(reserveCache.stableDebtTokenAddress); uint256 stableDebt = IERC20(address(stableDebtToken)).balanceOf(user); stableDebtToken.burn(user, stableDebt); (, reserveCache.nextTotalStableDebt, reserveCache.nextAvgStableBorrowRate) = stableDebtToken .mint(user, user, stableDebt, reserve.currentStableBorrowRate); reserve.updateInterestRates(reserveCache, asset, 0, 0); emit RebalanceStableBorrowRate(asset, user); } /** * @notice Implements the swap borrow rate feature. Borrowers can swap from variable to stable positions at any time. * @dev Emits the `Swap()` event * @param reserve The of the reserve of the asset being repaid * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param asset The asset of the position being swapped * @param interestRateMode The current interest rate mode of the position being swapped */ function executeSwapBorrowRateMode( DataTypes.ReserveData storage reserve, DataTypes.UserConfigurationMap storage userConfig, address asset, DataTypes.InterestRateMode interestRateMode ) external { DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); (uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt( msg.sender, reserveCache ); ValidationLogic.validateSwapRateMode( reserve, reserveCache, userConfig, stableDebt, variableDebt, interestRateMode ); if (interestRateMode == DataTypes.InterestRateMode.STABLE) { (reserveCache.nextTotalStableDebt, reserveCache.nextAvgStableBorrowRate) = IStableDebtToken( reserveCache.stableDebtTokenAddress ).burn(msg.sender, stableDebt); (, reserveCache.nextScaledVariableDebt) = IVariableDebtToken( reserveCache.variableDebtTokenAddress ).mint(msg.sender, msg.sender, stableDebt, reserveCache.nextVariableBorrowIndex); } else { reserveCache.nextScaledVariableDebt = IVariableDebtToken( reserveCache.variableDebtTokenAddress ).burn(msg.sender, variableDebt, reserveCache.nextVariableBorrowIndex); (, reserveCache.nextTotalStableDebt, reserveCache.nextAvgStableBorrowRate) = IStableDebtToken( reserveCache.stableDebtTokenAddress ).mint(msg.sender, msg.sender, variableDebt, reserve.currentStableBorrowRate); } reserve.updateInterestRates(reserveCache, asset, 0, 0); emit SwapBorrowRateMode(asset, msg.sender, interestRateMode); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {Errors} from '../helpers/Errors.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {ReserveLogic} from './ReserveLogic.sol'; library BridgeLogic { using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using UserConfiguration for DataTypes.UserConfigurationMap; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using WadRayMath for uint256; using PercentageMath for uint256; using SafeCast for uint256; using GPv2SafeERC20 for IERC20; // See `IPool` for descriptions event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user); event MintUnbacked( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); event BackUnbacked(address indexed reserve, address indexed backer, uint256 amount, uint256 fee); /** * @notice Mint unbacked aTokens to a user and updates the unbacked for the reserve. * @dev Essentially a supply without transferring the underlying. * @dev Emits the `MintUnbacked` event * @dev Emits the `ReserveUsedAsCollateralEnabled` if asset is set as collateral * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param asset The address of the underlying asset to mint aTokens of * @param amount The amount to mint * @param onBehalfOf The address that will receive the aTokens * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man */ function executeMintUnbacked( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external { DataTypes.ReserveData storage reserve = reservesData[asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); ValidationLogic.validateSupply(reserveCache, reserve, amount); uint256 unbackedMintCap = reserveCache.reserveConfiguration.getUnbackedMintCap(); uint256 reserveDecimals = reserveCache.reserveConfiguration.getDecimals(); uint256 unbacked = reserve.unbacked += amount.toUint128(); require( unbacked <= unbackedMintCap * (10 ** reserveDecimals), Errors.UNBACKED_MINT_CAP_EXCEEDED ); reserve.updateInterestRates(reserveCache, asset, 0, 0); bool isFirstSupply = IAToken(reserveCache.aTokenAddress).mint( msg.sender, onBehalfOf, amount, reserveCache.nextLiquidityIndex ); if (isFirstSupply) { if ( ValidationLogic.validateAutomaticUseAsCollateral( reservesData, reservesList, userConfig, reserveCache.reserveConfiguration, reserveCache.aTokenAddress ) ) { userConfig.setUsingAsCollateral(reserve.id, true); emit ReserveUsedAsCollateralEnabled(asset, onBehalfOf); } } emit MintUnbacked(asset, msg.sender, onBehalfOf, amount, referralCode); } /** * @notice Back the current unbacked with `amount` and pay `fee`. * @dev It is not possible to back more than the existing unbacked amount of the reserve * @dev Emits the `BackUnbacked` event * @param reserve The reserve to back unbacked for * @param asset The address of the underlying asset to repay * @param amount The amount to back * @param fee The amount paid in fees * @param protocolFeeBps The fraction of fees in basis points paid to the protocol * @return The backed amount */ function executeBackUnbacked( DataTypes.ReserveData storage reserve, address asset, uint256 amount, uint256 fee, uint256 protocolFeeBps ) external returns (uint256) { DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); uint256 backingAmount = (amount < reserve.unbacked) ? amount : reserve.unbacked; uint256 feeToProtocol = fee.percentMul(protocolFeeBps); uint256 feeToLP = fee - feeToProtocol; uint256 added = backingAmount + fee; reserveCache.nextLiquidityIndex = reserve.cumulateToLiquidityIndex( IERC20(reserveCache.aTokenAddress).totalSupply() + uint256(reserve.accruedToTreasury).rayMul(reserveCache.nextLiquidityIndex), feeToLP ); reserve.accruedToTreasury += feeToProtocol.rayDiv(reserveCache.nextLiquidityIndex).toUint128(); reserve.unbacked -= backingAmount.toUint128(); reserve.updateInterestRates(reserveCache, asset, added, 0); IERC20(asset).safeTransferFrom(msg.sender, reserveCache.aTokenAddress, added); emit BackUnbacked(asset, msg.sender, backingAmount, fee); return backingAmount; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IPriceOracleGetter} from '../../../interfaces/IPriceOracleGetter.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {Errors} from '../helpers/Errors.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {ReserveLogic} from './ReserveLogic.sol'; /** * @title EModeLogic library * @author Aave * @notice Implements the base logic for all the actions related to the eMode */ library EModeLogic { using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using GPv2SafeERC20 for IERC20; using UserConfiguration for DataTypes.UserConfigurationMap; using WadRayMath for uint256; using PercentageMath for uint256; // See `IPool` for descriptions event UserEModeSet(address indexed user, uint8 categoryId); /** * @notice Updates the user efficiency mode category * @dev Will revert if user is borrowing non-compatible asset or change will drop HF < HEALTH_FACTOR_LIQUIDATION_THRESHOLD * @dev Emits the `UserEModeSet` event * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param usersEModeCategory The state of all users efficiency mode category * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the setUserEMode function */ function executeSetUserEMode( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, mapping(address => uint8) storage usersEModeCategory, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ExecuteSetUserEModeParams memory params ) external { ValidationLogic.validateSetUserEMode( reservesData, reservesList, eModeCategories, userConfig, params.reservesCount, params.categoryId ); uint8 prevCategoryId = usersEModeCategory[msg.sender]; usersEModeCategory[msg.sender] = params.categoryId; if (prevCategoryId != 0) { ValidationLogic.validateHealthFactor( reservesData, reservesList, eModeCategories, userConfig, msg.sender, params.categoryId, params.reservesCount, params.oracle ); } emit UserEModeSet(msg.sender, params.categoryId); } /** * @notice Gets the eMode configuration and calculates the eMode asset price if a custom oracle is configured * @dev The eMode asset price returned is 0 if no oracle is specified * @param category The user eMode category * @param oracle The price oracle * @return The eMode ltv * @return The eMode liquidation threshold * @return The eMode asset price */ function getEModeConfiguration( DataTypes.EModeCategory storage category, IPriceOracleGetter oracle ) internal view returns (uint256, uint256, uint256) { uint256 eModeAssetPrice = 0; address eModePriceSource = category.priceSource; if (eModePriceSource != address(0)) { eModeAssetPrice = oracle.getAssetPrice(eModePriceSource); } return (category.ltv, category.liquidationThreshold, eModeAssetPrice); } /** * @notice Checks if eMode is active for a user and if yes, if the asset belongs to the eMode category chosen * @param eModeUserCategory The user eMode category * @param eModeAssetCategory The asset eMode category * @return True if eMode is active and the asset belongs to the eMode category chosen by the user, false otherwise */ function isInEModeCategory( uint256 eModeUserCategory, uint256 eModeAssetCategory ) internal pure returns (bool) { return (eModeUserCategory != 0 && eModeAssetCategory == eModeUserCategory); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {IFlashLoanReceiver} from '../../../flashloan/interfaces/IFlashLoanReceiver.sol'; import {IFlashLoanSimpleReceiver} from '../../../flashloan/interfaces/IFlashLoanSimpleReceiver.sol'; import {IPoolAddressesProvider} from '../../../interfaces/IPoolAddressesProvider.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {Errors} from '../helpers/Errors.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {BorrowLogic} from './BorrowLogic.sol'; import {ReserveLogic} from './ReserveLogic.sol'; /** * @title FlashLoanLogic library * @author Aave * @notice Implements the logic for the flash loans */ library FlashLoanLogic { using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using GPv2SafeERC20 for IERC20; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using WadRayMath for uint256; using PercentageMath for uint256; using SafeCast for uint256; // See `IPool` for descriptions event FlashLoan( address indexed target, address initiator, address indexed asset, uint256 amount, DataTypes.InterestRateMode interestRateMode, uint256 premium, uint16 indexed referralCode ); // Helper struct for internal variables used in the `executeFlashLoan` function struct FlashLoanLocalVars { IFlashLoanReceiver receiver; uint256 i; address currentAsset; uint256 currentAmount; uint256[] totalPremiums; uint256 flashloanPremiumTotal; uint256 flashloanPremiumToProtocol; } /** * @notice Implements the flashloan feature that allow users to access liquidity of the pool for one transaction * as long as the amount taken plus fee is returned or debt is opened. * @dev For authorized flashborrowers the fee is waived * @dev At the end of the transaction the pool will pull amount borrowed + fee from the receiver, * if the receiver have not approved the pool the transaction will revert. * @dev Emits the `FlashLoan()` event * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the flashloan function */ function executeFlashLoan( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap storage userConfig, DataTypes.FlashloanParams memory params ) external { // The usual action flow (cache -> updateState -> validation -> changeState -> updateRates) // is altered to (validation -> user payload -> cache -> updateState -> changeState -> updateRates) for flashloans. // This is done to protect against reentrance and rate manipulation within the user specified payload. ValidationLogic.validateFlashloan(reservesData, params.assets, params.amounts); FlashLoanLocalVars memory vars; vars.totalPremiums = new uint256[](params.assets.length); vars.receiver = IFlashLoanReceiver(params.receiverAddress); (vars.flashloanPremiumTotal, vars.flashloanPremiumToProtocol) = params.isAuthorizedFlashBorrower ? (0, 0) : (params.flashLoanPremiumTotal, params.flashLoanPremiumToProtocol); for (vars.i = 0; vars.i < params.assets.length; vars.i++) { vars.currentAmount = params.amounts[vars.i]; vars.totalPremiums[vars.i] = DataTypes.InterestRateMode(params.interestRateModes[vars.i]) == DataTypes.InterestRateMode.NONE ? vars.currentAmount.percentMul(vars.flashloanPremiumTotal) : 0; IAToken(reservesData[params.assets[vars.i]].aTokenAddress).transferUnderlyingTo( params.receiverAddress, vars.currentAmount ); } require( vars.receiver.executeOperation( params.assets, params.amounts, vars.totalPremiums, msg.sender, params.params ), Errors.INVALID_FLASHLOAN_EXECUTOR_RETURN ); for (vars.i = 0; vars.i < params.assets.length; vars.i++) { vars.currentAsset = params.assets[vars.i]; vars.currentAmount = params.amounts[vars.i]; if ( DataTypes.InterestRateMode(params.interestRateModes[vars.i]) == DataTypes.InterestRateMode.NONE ) { _handleFlashLoanRepayment( reservesData[vars.currentAsset], DataTypes.FlashLoanRepaymentParams({ asset: vars.currentAsset, receiverAddress: params.receiverAddress, amount: vars.currentAmount, totalPremium: vars.totalPremiums[vars.i], flashLoanPremiumToProtocol: vars.flashloanPremiumToProtocol, referralCode: params.referralCode }) ); } else { // If the user chose to not return the funds, the system checks if there is enough collateral and // eventually opens a debt position BorrowLogic.executeBorrow( reservesData, reservesList, eModeCategories, userConfig, DataTypes.ExecuteBorrowParams({ asset: vars.currentAsset, user: msg.sender, onBehalfOf: params.onBehalfOf, amount: vars.currentAmount, interestRateMode: DataTypes.InterestRateMode(params.interestRateModes[vars.i]), referralCode: params.referralCode, releaseUnderlying: false, maxStableRateBorrowSizePercent: params.maxStableRateBorrowSizePercent, reservesCount: params.reservesCount, oracle: IPoolAddressesProvider(params.addressesProvider).getPriceOracle(), userEModeCategory: params.userEModeCategory, priceOracleSentinel: IPoolAddressesProvider(params.addressesProvider) .getPriceOracleSentinel() }) ); // no premium is paid when taking on the flashloan as debt emit FlashLoan( params.receiverAddress, msg.sender, vars.currentAsset, vars.currentAmount, DataTypes.InterestRateMode(params.interestRateModes[vars.i]), 0, params.referralCode ); } } } /** * @notice Implements the simple flashloan feature that allow users to access liquidity of ONE reserve for one * transaction as long as the amount taken plus fee is returned. * @dev Does not waive fee for approved flashborrowers nor allow taking on debt instead of repaying to save gas * @dev At the end of the transaction the pool will pull amount borrowed + fee from the receiver, * if the receiver have not approved the pool the transaction will revert. * @dev Emits the `FlashLoan()` event * @param reserve The state of the flashloaned reserve * @param params The additional parameters needed to execute the simple flashloan function */ function executeFlashLoanSimple( DataTypes.ReserveData storage reserve, DataTypes.FlashloanSimpleParams memory params ) external { // The usual action flow (cache -> updateState -> validation -> changeState -> updateRates) // is altered to (validation -> user payload -> cache -> updateState -> changeState -> updateRates) for flashloans. // This is done to protect against reentrance and rate manipulation within the user specified payload. ValidationLogic.validateFlashloanSimple(reserve); IFlashLoanSimpleReceiver receiver = IFlashLoanSimpleReceiver(params.receiverAddress); uint256 totalPremium = params.amount.percentMul(params.flashLoanPremiumTotal); IAToken(reserve.aTokenAddress).transferUnderlyingTo(params.receiverAddress, params.amount); require( receiver.executeOperation( params.asset, params.amount, totalPremium, msg.sender, params.params ), Errors.INVALID_FLASHLOAN_EXECUTOR_RETURN ); _handleFlashLoanRepayment( reserve, DataTypes.FlashLoanRepaymentParams({ asset: params.asset, receiverAddress: params.receiverAddress, amount: params.amount, totalPremium: totalPremium, flashLoanPremiumToProtocol: params.flashLoanPremiumToProtocol, referralCode: params.referralCode }) ); } /** * @notice Handles repayment of flashloaned assets + premium * @dev Will pull the amount + premium from the receiver, so must have approved pool * @param reserve The state of the flashloaned reserve * @param params The additional parameters needed to execute the repayment function */ function _handleFlashLoanRepayment( DataTypes.ReserveData storage reserve, DataTypes.FlashLoanRepaymentParams memory params ) internal { uint256 premiumToProtocol = params.totalPremium.percentMul(params.flashLoanPremiumToProtocol); uint256 premiumToLP = params.totalPremium - premiumToProtocol; uint256 amountPlusPremium = params.amount + params.totalPremium; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); reserveCache.nextLiquidityIndex = reserve.cumulateToLiquidityIndex( IERC20(reserveCache.aTokenAddress).totalSupply() + uint256(reserve.accruedToTreasury).rayMul(reserveCache.nextLiquidityIndex), premiumToLP ); reserve.accruedToTreasury += premiumToProtocol .rayDiv(reserveCache.nextLiquidityIndex) .toUint128(); reserve.updateInterestRates(reserveCache, params.asset, amountPlusPremium, 0); IERC20(params.asset).safeTransferFrom( params.receiverAddress, reserveCache.aTokenAddress, amountPlusPremium ); IAToken(reserveCache.aTokenAddress).handleRepayment( params.receiverAddress, params.receiverAddress, amountPlusPremium ); emit FlashLoan( params.receiverAddress, msg.sender, params.asset, params.amount, DataTypes.InterestRateMode(0), params.totalPremium, params.referralCode ); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IScaledBalanceToken} from '../../../interfaces/IScaledBalanceToken.sol'; import {IPriceOracleGetter} from '../../../interfaces/IPriceOracleGetter.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {EModeLogic} from './EModeLogic.sol'; /** * @title GenericLogic library * @author Aave * @notice Implements protocol-level logic to calculate and validate the state of a user */ library GenericLogic { using ReserveLogic for DataTypes.ReserveData; using WadRayMath for uint256; using PercentageMath for uint256; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using UserConfiguration for DataTypes.UserConfigurationMap; struct CalculateUserAccountDataVars { uint256 assetPrice; uint256 assetUnit; uint256 userBalanceInBaseCurrency; uint256 decimals; uint256 ltv; uint256 liquidationThreshold; uint256 i; uint256 healthFactor; uint256 totalCollateralInBaseCurrency; uint256 totalDebtInBaseCurrency; uint256 avgLtv; uint256 avgLiquidationThreshold; uint256 eModeAssetPrice; uint256 eModeLtv; uint256 eModeLiqThreshold; uint256 eModeAssetCategory; address currentReserveAddress; bool hasZeroLtvCollateral; bool isInEModeCategory; } /** * @notice Calculates the user data across the reserves. * @dev It includes the total liquidity/collateral/borrow balances in the base currency used by the price feed, * the average Loan To Value, the average Liquidation Ratio, and the Health factor. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param params Additional parameters needed for the calculation * @return The total collateral of the user in the base currency used by the price feed * @return The total debt of the user in the base currency used by the price feed * @return The average ltv of the user * @return The average liquidation threshold of the user * @return The health factor of the user * @return True if the ltv is zero, false otherwise */ function calculateUserAccountData( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.CalculateUserAccountDataParams memory params ) internal view returns (uint256, uint256, uint256, uint256, uint256, bool) { if (params.userConfig.isEmpty()) { return (0, 0, 0, 0, type(uint256).max, false); } CalculateUserAccountDataVars memory vars; if (params.userEModeCategory != 0) { (vars.eModeLtv, vars.eModeLiqThreshold, vars.eModeAssetPrice) = EModeLogic .getEModeConfiguration( eModeCategories[params.userEModeCategory], IPriceOracleGetter(params.oracle) ); } while (vars.i < params.reservesCount) { if (!params.userConfig.isUsingAsCollateralOrBorrowing(vars.i)) { unchecked { ++vars.i; } continue; } vars.currentReserveAddress = reservesList[vars.i]; if (vars.currentReserveAddress == address(0)) { unchecked { ++vars.i; } continue; } DataTypes.ReserveData storage currentReserve = reservesData[vars.currentReserveAddress]; ( vars.ltv, vars.liquidationThreshold, , vars.decimals, , vars.eModeAssetCategory ) = currentReserve.configuration.getParams(); unchecked { vars.assetUnit = 10 ** vars.decimals; } vars.assetPrice = vars.eModeAssetPrice != 0 && params.userEModeCategory == vars.eModeAssetCategory ? vars.eModeAssetPrice : IPriceOracleGetter(params.oracle).getAssetPrice(vars.currentReserveAddress); if (vars.liquidationThreshold != 0 && params.userConfig.isUsingAsCollateral(vars.i)) { vars.userBalanceInBaseCurrency = _getUserBalanceInBaseCurrency( params.user, currentReserve, vars.assetPrice, vars.assetUnit ); vars.totalCollateralInBaseCurrency += vars.userBalanceInBaseCurrency; vars.isInEModeCategory = EModeLogic.isInEModeCategory( params.userEModeCategory, vars.eModeAssetCategory ); if (vars.ltv != 0) { vars.avgLtv += vars.userBalanceInBaseCurrency * (vars.isInEModeCategory ? vars.eModeLtv : vars.ltv); } else { vars.hasZeroLtvCollateral = true; } vars.avgLiquidationThreshold += vars.userBalanceInBaseCurrency * (vars.isInEModeCategory ? vars.eModeLiqThreshold : vars.liquidationThreshold); } if (params.userConfig.isBorrowing(vars.i)) { vars.totalDebtInBaseCurrency += _getUserDebtInBaseCurrency( params.user, currentReserve, vars.assetPrice, vars.assetUnit ); } unchecked { ++vars.i; } } unchecked { vars.avgLtv = vars.totalCollateralInBaseCurrency != 0 ? vars.avgLtv / vars.totalCollateralInBaseCurrency : 0; vars.avgLiquidationThreshold = vars.totalCollateralInBaseCurrency != 0 ? vars.avgLiquidationThreshold / vars.totalCollateralInBaseCurrency : 0; } vars.healthFactor = (vars.totalDebtInBaseCurrency == 0) ? type(uint256).max : (vars.totalCollateralInBaseCurrency.percentMul(vars.avgLiquidationThreshold)).wadDiv( vars.totalDebtInBaseCurrency ); return ( vars.totalCollateralInBaseCurrency, vars.totalDebtInBaseCurrency, vars.avgLtv, vars.avgLiquidationThreshold, vars.healthFactor, vars.hasZeroLtvCollateral ); } /** * @notice Calculates the maximum amount that can be borrowed depending on the available collateral, the total debt * and the average Loan To Value * @param totalCollateralInBaseCurrency The total collateral in the base currency used by the price feed * @param totalDebtInBaseCurrency The total borrow balance in the base currency used by the price feed * @param ltv The average loan to value * @return The amount available to borrow in the base currency of the used by the price feed */ function calculateAvailableBorrows( uint256 totalCollateralInBaseCurrency, uint256 totalDebtInBaseCurrency, uint256 ltv ) internal pure returns (uint256) { uint256 availableBorrowsInBaseCurrency = totalCollateralInBaseCurrency.percentMul(ltv); if (availableBorrowsInBaseCurrency < totalDebtInBaseCurrency) { return 0; } availableBorrowsInBaseCurrency = availableBorrowsInBaseCurrency - totalDebtInBaseCurrency; return availableBorrowsInBaseCurrency; } /** * @notice Calculates total debt of the user in the based currency used to normalize the values of the assets * @dev This fetches the `balanceOf` of the stable and variable debt tokens for the user. For gas reasons, the * variable debt balance is calculated by fetching `scaledBalancesOf` normalized debt, which is cheaper than * fetching `balanceOf` * @param user The address of the user * @param reserve The data of the reserve for which the total debt of the user is being calculated * @param assetPrice The price of the asset for which the total debt of the user is being calculated * @param assetUnit The value representing one full unit of the asset (10^decimals) * @return The total debt of the user normalized to the base currency */ function _getUserDebtInBaseCurrency( address user, DataTypes.ReserveData storage reserve, uint256 assetPrice, uint256 assetUnit ) private view returns (uint256) { // fetching variable debt uint256 userTotalDebt = IScaledBalanceToken(reserve.variableDebtTokenAddress).scaledBalanceOf( user ); if (userTotalDebt != 0) { userTotalDebt = userTotalDebt.rayMul(reserve.getNormalizedDebt()); } userTotalDebt = userTotalDebt + IERC20(reserve.stableDebtTokenAddress).balanceOf(user); userTotalDebt = assetPrice * userTotalDebt; unchecked { return userTotalDebt / assetUnit; } } /** * @notice Calculates total aToken balance of the user in the based currency used by the price oracle * @dev For gas reasons, the aToken balance is calculated by fetching `scaledBalancesOf` normalized debt, which * is cheaper than fetching `balanceOf` * @param user The address of the user * @param reserve The data of the reserve for which the total aToken balance of the user is being calculated * @param assetPrice The price of the asset for which the total aToken balance of the user is being calculated * @param assetUnit The value representing one full unit of the asset (10^decimals) * @return The total aToken balance of the user normalized to the base currency of the price oracle */ function _getUserBalanceInBaseCurrency( address user, DataTypes.ReserveData storage reserve, uint256 assetPrice, uint256 assetUnit ) private view returns (uint256) { uint256 normalizedIncome = reserve.getNormalizedIncome(); uint256 balance = ( IScaledBalanceToken(reserve.aTokenAddress).scaledBalanceOf(user).rayMul(normalizedIncome) ) * assetPrice; unchecked { return balance / assetUnit; } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {DataTypes} from '../types/DataTypes.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; /** * @title IsolationModeLogic library * @author Aave * @notice Implements the base logic for handling repayments for assets borrowed in isolation mode */ library IsolationModeLogic { using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using UserConfiguration for DataTypes.UserConfigurationMap; using SafeCast for uint256; // See `IPool` for descriptions event IsolationModeTotalDebtUpdated(address indexed asset, uint256 totalDebt); /** * @notice updated the isolated debt whenever a position collateralized by an isolated asset is repaid or liquidated * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig The user configuration mapping * @param reserveCache The cached data of the reserve * @param repayAmount The amount being repaid */ function updateIsolatedDebtIfIsolated( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ReserveCache memory reserveCache, uint256 repayAmount ) internal { (bool isolationModeActive, address isolationModeCollateralAddress, ) = userConfig .getIsolationModeState(reservesData, reservesList); if (isolationModeActive) { uint128 isolationModeTotalDebt = reservesData[isolationModeCollateralAddress] .isolationModeTotalDebt; uint128 isolatedDebtRepaid = (repayAmount / 10 ** (reserveCache.reserveConfiguration.getDecimals() - ReserveConfiguration.DEBT_CEILING_DECIMALS)).toUint128(); // since the debt ceiling does not take into account the interest accrued, it might happen that amount // repaid > debt in isolation mode if (isolationModeTotalDebt <= isolatedDebtRepaid) { reservesData[isolationModeCollateralAddress].isolationModeTotalDebt = 0; emit IsolationModeTotalDebtUpdated(isolationModeCollateralAddress, 0); } else { uint256 nextIsolationModeTotalDebt = reservesData[isolationModeCollateralAddress] .isolationModeTotalDebt = isolationModeTotalDebt - isolatedDebtRepaid; emit IsolationModeTotalDebtUpdated( isolationModeCollateralAddress, nextIsolationModeTotalDebt ); } } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts//IERC20.sol'; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {PercentageMath} from '../../libraries/math/PercentageMath.sol'; import {WadRayMath} from '../../libraries/math/WadRayMath.sol'; import {Helpers} from '../../libraries/helpers/Helpers.sol'; import {DataTypes} from '../../libraries/types/DataTypes.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {GenericLogic} from './GenericLogic.sol'; import {IsolationModeLogic} from './IsolationModeLogic.sol'; import {EModeLogic} from './EModeLogic.sol'; import {UserConfiguration} from '../../libraries/configuration/UserConfiguration.sol'; import {ReserveConfiguration} from '../../libraries/configuration/ReserveConfiguration.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {IStableDebtToken} from '../../../interfaces/IStableDebtToken.sol'; import {IVariableDebtToken} from '../../../interfaces/IVariableDebtToken.sol'; import {IPriceOracleGetter} from '../../../interfaces/IPriceOracleGetter.sol'; /** * @title LiquidationLogic library * @author Aave * @notice Implements actions involving management of collateral in the protocol, the main one being the liquidations */ library LiquidationLogic { using WadRayMath for uint256; using PercentageMath for uint256; using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using UserConfiguration for DataTypes.UserConfigurationMap; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using GPv2SafeERC20 for IERC20; // See `IPool` for descriptions event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user); event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user); event LiquidationCall( address indexed collateralAsset, address indexed debtAsset, address indexed user, uint256 debtToCover, uint256 liquidatedCollateralAmount, address liquidator, bool receiveAToken ); /** * @dev Default percentage of borrower's debt to be repaid in a liquidation. * @dev Percentage applied when the users health factor is above `CLOSE_FACTOR_HF_THRESHOLD` * Expressed in bps, a value of 0.5e4 results in 50.00% */ uint256 internal constant DEFAULT_LIQUIDATION_CLOSE_FACTOR = 0.5e4; /** * @dev Maximum percentage of borrower's debt to be repaid in a liquidation * @dev Percentage applied when the users health factor is below `CLOSE_FACTOR_HF_THRESHOLD` * Expressed in bps, a value of 1e4 results in 100.00% */ uint256 public constant MAX_LIQUIDATION_CLOSE_FACTOR = 1e4; /** * @dev This constant represents below which health factor value it is possible to liquidate * an amount of debt corresponding to `MAX_LIQUIDATION_CLOSE_FACTOR`. * A value of 0.95e18 results in 0.95 */ uint256 public constant CLOSE_FACTOR_HF_THRESHOLD = 0.95e18; struct LiquidationCallLocalVars { uint256 userCollateralBalance; uint256 userVariableDebt; uint256 userTotalDebt; uint256 actualDebtToLiquidate; uint256 actualCollateralToLiquidate; uint256 liquidationBonus; uint256 healthFactor; uint256 liquidationProtocolFeeAmount; address collateralPriceSource; address debtPriceSource; IAToken collateralAToken; DataTypes.ReserveCache debtReserveCache; } /** * @notice Function to liquidate a position if its Health Factor drops below 1. The caller (liquidator) * covers `debtToCover` amount of debt of the user getting liquidated, and receives * a proportional amount of the `collateralAsset` plus a bonus to cover market risk * @dev Emits the `LiquidationCall()` event * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param usersConfig The users configuration mapping that track the supplied/borrowed assets * @param eModeCategories The configuration of all the efficiency mode categories * @param params The additional parameters needed to execute the liquidation function */ function executeLiquidationCall( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(address => DataTypes.UserConfigurationMap) storage usersConfig, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.ExecuteLiquidationCallParams memory params ) external { LiquidationCallLocalVars memory vars; DataTypes.ReserveData storage collateralReserve = reservesData[params.collateralAsset]; DataTypes.ReserveData storage debtReserve = reservesData[params.debtAsset]; DataTypes.UserConfigurationMap storage userConfig = usersConfig[params.user]; vars.debtReserveCache = debtReserve.cache(); debtReserve.updateState(vars.debtReserveCache); (, , , , vars.healthFactor, ) = GenericLogic.calculateUserAccountData( reservesData, reservesList, eModeCategories, DataTypes.CalculateUserAccountDataParams({ userConfig: userConfig, reservesCount: params.reservesCount, user: params.user, oracle: params.priceOracle, userEModeCategory: params.userEModeCategory }) ); (vars.userVariableDebt, vars.userTotalDebt, vars.actualDebtToLiquidate) = _calculateDebt( vars.debtReserveCache, params, vars.healthFactor ); ValidationLogic.validateLiquidationCall( userConfig, collateralReserve, DataTypes.ValidateLiquidationCallParams({ debtReserveCache: vars.debtReserveCache, totalDebt: vars.userTotalDebt, healthFactor: vars.healthFactor, priceOracleSentinel: params.priceOracleSentinel }) ); ( vars.collateralAToken, vars.collateralPriceSource, vars.debtPriceSource, vars.liquidationBonus ) = _getConfigurationData(eModeCategories, collateralReserve, params); vars.userCollateralBalance = vars.collateralAToken.balanceOf(params.user); ( vars.actualCollateralToLiquidate, vars.actualDebtToLiquidate, vars.liquidationProtocolFeeAmount ) = _calculateAvailableCollateralToLiquidate( collateralReserve, vars.debtReserveCache, vars.collateralPriceSource, vars.debtPriceSource, vars.actualDebtToLiquidate, vars.userCollateralBalance, vars.liquidationBonus, IPriceOracleGetter(params.priceOracle) ); if (vars.userTotalDebt == vars.actualDebtToLiquidate) { userConfig.setBorrowing(debtReserve.id, false); } // If the collateral being liquidated is equal to the user balance, // we set the currency as not being used as collateral anymore if ( vars.actualCollateralToLiquidate + vars.liquidationProtocolFeeAmount == vars.userCollateralBalance ) { userConfig.setUsingAsCollateral(collateralReserve.id, false); emit ReserveUsedAsCollateralDisabled(params.collateralAsset, params.user); } _burnDebtTokens(params, vars); debtReserve.updateInterestRates( vars.debtReserveCache, params.debtAsset, vars.actualDebtToLiquidate, 0 ); IsolationModeLogic.updateIsolatedDebtIfIsolated( reservesData, reservesList, userConfig, vars.debtReserveCache, vars.actualDebtToLiquidate ); if (params.receiveAToken) { _liquidateATokens(reservesData, reservesList, usersConfig, collateralReserve, params, vars); } else { _burnCollateralATokens(collateralReserve, params, vars); } // Transfer fee to treasury if it is non-zero if (vars.liquidationProtocolFeeAmount != 0) { uint256 liquidityIndex = collateralReserve.getNormalizedIncome(); uint256 scaledDownLiquidationProtocolFee = vars.liquidationProtocolFeeAmount.rayDiv( liquidityIndex ); uint256 scaledDownUserBalance = vars.collateralAToken.scaledBalanceOf(params.user); // To avoid trying to send more aTokens than available on balance, due to 1 wei imprecision if (scaledDownLiquidationProtocolFee > scaledDownUserBalance) { vars.liquidationProtocolFeeAmount = scaledDownUserBalance.rayMul(liquidityIndex); } vars.collateralAToken.transferOnLiquidation( params.user, vars.collateralAToken.RESERVE_TREASURY_ADDRESS(), vars.liquidationProtocolFeeAmount ); } // Transfers the debt asset being repaid to the aToken, where the liquidity is kept IERC20(params.debtAsset).safeTransferFrom( msg.sender, vars.debtReserveCache.aTokenAddress, vars.actualDebtToLiquidate ); IAToken(vars.debtReserveCache.aTokenAddress).handleRepayment( msg.sender, params.user, vars.actualDebtToLiquidate ); emit LiquidationCall( params.collateralAsset, params.debtAsset, params.user, vars.actualDebtToLiquidate, vars.actualCollateralToLiquidate, msg.sender, params.receiveAToken ); } /** * @notice Burns the collateral aTokens and transfers the underlying to the liquidator. * @dev The function also updates the state and the interest rate of the collateral reserve. * @param collateralReserve The data of the collateral reserve * @param params The additional parameters needed to execute the liquidation function * @param vars The executeLiquidationCall() function local vars */ function _burnCollateralATokens( DataTypes.ReserveData storage collateralReserve, DataTypes.ExecuteLiquidationCallParams memory params, LiquidationCallLocalVars memory vars ) internal { DataTypes.ReserveCache memory collateralReserveCache = collateralReserve.cache(); collateralReserve.updateState(collateralReserveCache); collateralReserve.updateInterestRates( collateralReserveCache, params.collateralAsset, 0, vars.actualCollateralToLiquidate ); // Burn the equivalent amount of aToken, sending the underlying to the liquidator vars.collateralAToken.burn( params.user, msg.sender, vars.actualCollateralToLiquidate, collateralReserveCache.nextLiquidityIndex ); } /** * @notice Liquidates the user aTokens by transferring them to the liquidator. * @dev The function also checks the state of the liquidator and activates the aToken as collateral * as in standard transfers if the isolation mode constraints are respected. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param usersConfig The users configuration mapping that track the supplied/borrowed assets * @param collateralReserve The data of the collateral reserve * @param params The additional parameters needed to execute the liquidation function * @param vars The executeLiquidationCall() function local vars */ function _liquidateATokens( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(address => DataTypes.UserConfigurationMap) storage usersConfig, DataTypes.ReserveData storage collateralReserve, DataTypes.ExecuteLiquidationCallParams memory params, LiquidationCallLocalVars memory vars ) internal { uint256 liquidatorPreviousATokenBalance = IERC20(vars.collateralAToken).balanceOf(msg.sender); vars.collateralAToken.transferOnLiquidation( params.user, msg.sender, vars.actualCollateralToLiquidate ); if (liquidatorPreviousATokenBalance == 0) { DataTypes.UserConfigurationMap storage liquidatorConfig = usersConfig[msg.sender]; if ( ValidationLogic.validateAutomaticUseAsCollateral( reservesData, reservesList, liquidatorConfig, collateralReserve.configuration, collateralReserve.aTokenAddress ) ) { liquidatorConfig.setUsingAsCollateral(collateralReserve.id, true); emit ReserveUsedAsCollateralEnabled(params.collateralAsset, msg.sender); } } } /** * @notice Burns the debt tokens of the user up to the amount being repaid by the liquidator. * @dev The function alters the `debtReserveCache` state in `vars` to update the debt related data. * @param params The additional parameters needed to execute the liquidation function * @param vars the executeLiquidationCall() function local vars */ function _burnDebtTokens( DataTypes.ExecuteLiquidationCallParams memory params, LiquidationCallLocalVars memory vars ) internal { if (vars.userVariableDebt >= vars.actualDebtToLiquidate) { vars.debtReserveCache.nextScaledVariableDebt = IVariableDebtToken( vars.debtReserveCache.variableDebtTokenAddress ).burn( params.user, vars.actualDebtToLiquidate, vars.debtReserveCache.nextVariableBorrowIndex ); } else { // If the user doesn't have variable debt, no need to try to burn variable debt tokens if (vars.userVariableDebt != 0) { vars.debtReserveCache.nextScaledVariableDebt = IVariableDebtToken( vars.debtReserveCache.variableDebtTokenAddress ).burn(params.user, vars.userVariableDebt, vars.debtReserveCache.nextVariableBorrowIndex); } ( vars.debtReserveCache.nextTotalStableDebt, vars.debtReserveCache.nextAvgStableBorrowRate ) = IStableDebtToken(vars.debtReserveCache.stableDebtTokenAddress).burn( params.user, vars.actualDebtToLiquidate - vars.userVariableDebt ); } } /** * @notice Calculates the total debt of the user and the actual amount to liquidate depending on the health factor * and corresponding close factor. * @dev If the Health Factor is below CLOSE_FACTOR_HF_THRESHOLD, the close factor is increased to MAX_LIQUIDATION_CLOSE_FACTOR * @param debtReserveCache The reserve cache data object of the debt reserve * @param params The additional parameters needed to execute the liquidation function * @param healthFactor The health factor of the position * @return The variable debt of the user * @return The total debt of the user * @return The actual debt to liquidate as a function of the closeFactor */ function _calculateDebt( DataTypes.ReserveCache memory debtReserveCache, DataTypes.ExecuteLiquidationCallParams memory params, uint256 healthFactor ) internal view returns (uint256, uint256, uint256) { (uint256 userStableDebt, uint256 userVariableDebt) = Helpers.getUserCurrentDebt( params.user, debtReserveCache ); uint256 userTotalDebt = userStableDebt + userVariableDebt; uint256 closeFactor = healthFactor > CLOSE_FACTOR_HF_THRESHOLD ? DEFAULT_LIQUIDATION_CLOSE_FACTOR : MAX_LIQUIDATION_CLOSE_FACTOR; uint256 maxLiquidatableDebt = userTotalDebt.percentMul(closeFactor); uint256 actualDebtToLiquidate = params.debtToCover > maxLiquidatableDebt ? maxLiquidatableDebt : params.debtToCover; return (userVariableDebt, userTotalDebt, actualDebtToLiquidate); } /** * @notice Returns the configuration data for the debt and the collateral reserves. * @param eModeCategories The configuration of all the efficiency mode categories * @param collateralReserve The data of the collateral reserve * @param params The additional parameters needed to execute the liquidation function * @return The collateral aToken * @return The address to use as price source for the collateral * @return The address to use as price source for the debt * @return The liquidation bonus to apply to the collateral */ function _getConfigurationData( mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.ReserveData storage collateralReserve, DataTypes.ExecuteLiquidationCallParams memory params ) internal view returns (IAToken, address, address, uint256) { IAToken collateralAToken = IAToken(collateralReserve.aTokenAddress); uint256 liquidationBonus = collateralReserve.configuration.getLiquidationBonus(); address collateralPriceSource = params.collateralAsset; address debtPriceSource = params.debtAsset; if (params.userEModeCategory != 0) { address eModePriceSource = eModeCategories[params.userEModeCategory].priceSource; if ( EModeLogic.isInEModeCategory( params.userEModeCategory, collateralReserve.configuration.getEModeCategory() ) ) { liquidationBonus = eModeCategories[params.userEModeCategory].liquidationBonus; if (eModePriceSource != address(0)) { collateralPriceSource = eModePriceSource; } } // when in eMode, debt will always be in the same eMode category, can skip matching category check if (eModePriceSource != address(0)) { debtPriceSource = eModePriceSource; } } return (collateralAToken, collateralPriceSource, debtPriceSource, liquidationBonus); } struct AvailableCollateralToLiquidateLocalVars { uint256 collateralPrice; uint256 debtAssetPrice; uint256 maxCollateralToLiquidate; uint256 baseCollateral; uint256 bonusCollateral; uint256 debtAssetDecimals; uint256 collateralDecimals; uint256 collateralAssetUnit; uint256 debtAssetUnit; uint256 collateralAmount; uint256 debtAmountNeeded; uint256 liquidationProtocolFeePercentage; uint256 liquidationProtocolFee; } /** * @notice Calculates how much of a specific collateral can be liquidated, given * a certain amount of debt asset. * @dev This function needs to be called after all the checks to validate the liquidation have been performed, * otherwise it might fail. * @param collateralReserve The data of the collateral reserve * @param debtReserveCache The cached data of the debt reserve * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover * @param userCollateralBalance The collateral balance for the specific `collateralAsset` of the user being liquidated * @param liquidationBonus The collateral bonus percentage to receive as result of the liquidation * @return The maximum amount that is possible to liquidate given all the liquidation constraints (user balance, close factor) * @return The amount to repay with the liquidation * @return The fee taken from the liquidation bonus amount to be paid to the protocol */ function _calculateAvailableCollateralToLiquidate( DataTypes.ReserveData storage collateralReserve, DataTypes.ReserveCache memory debtReserveCache, address collateralAsset, address debtAsset, uint256 debtToCover, uint256 userCollateralBalance, uint256 liquidationBonus, IPriceOracleGetter oracle ) internal view returns (uint256, uint256, uint256) { AvailableCollateralToLiquidateLocalVars memory vars; vars.collateralPrice = oracle.getAssetPrice(collateralAsset); vars.debtAssetPrice = oracle.getAssetPrice(debtAsset); vars.collateralDecimals = collateralReserve.configuration.getDecimals(); vars.debtAssetDecimals = debtReserveCache.reserveConfiguration.getDecimals(); unchecked { vars.collateralAssetUnit = 10 ** vars.collateralDecimals; vars.debtAssetUnit = 10 ** vars.debtAssetDecimals; } vars.liquidationProtocolFeePercentage = collateralReserve .configuration .getLiquidationProtocolFee(); // This is the base collateral to liquidate based on the given debt to cover vars.baseCollateral = ((vars.debtAssetPrice * debtToCover * vars.collateralAssetUnit)) / (vars.collateralPrice * vars.debtAssetUnit); vars.maxCollateralToLiquidate = vars.baseCollateral.percentMul(liquidationBonus); if (vars.maxCollateralToLiquidate > userCollateralBalance) { vars.collateralAmount = userCollateralBalance; vars.debtAmountNeeded = ((vars.collateralPrice * vars.collateralAmount * vars.debtAssetUnit) / (vars.debtAssetPrice * vars.collateralAssetUnit)).percentDiv(liquidationBonus); } else { vars.collateralAmount = vars.maxCollateralToLiquidate; vars.debtAmountNeeded = debtToCover; } if (vars.liquidationProtocolFeePercentage != 0) { vars.bonusCollateral = vars.collateralAmount - vars.collateralAmount.percentDiv(liquidationBonus); vars.liquidationProtocolFee = vars.bonusCollateral.percentMul( vars.liquidationProtocolFeePercentage ); return ( vars.collateralAmount - vars.liquidationProtocolFee, vars.debtAmountNeeded, vars.liquidationProtocolFee ); } else { return (vars.collateralAmount, vars.debtAmountNeeded, 0); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {Address} from '../../../dependencies/openzeppelin/contracts/Address.sol'; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {Errors} from '../helpers/Errors.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {GenericLogic} from './GenericLogic.sol'; /** * @title PoolLogic library * @author Aave * @notice Implements the logic for Pool specific functions */ library PoolLogic { using GPv2SafeERC20 for IERC20; using WadRayMath for uint256; using ReserveLogic for DataTypes.ReserveData; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; // See `IPool` for descriptions event MintedToTreasury(address indexed reserve, uint256 amountMinted); event IsolationModeTotalDebtUpdated(address indexed asset, uint256 totalDebt); /** * @notice Initialize an asset reserve and add the reserve to the list of reserves * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param params Additional parameters needed for initiation * @return true if appended, false if inserted at existing empty spot */ function executeInitReserve( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.InitReserveParams memory params ) external returns (bool) { require(Address.isContract(params.asset), Errors.NOT_CONTRACT); reservesData[params.asset].init( params.aTokenAddress, params.stableDebtAddress, params.variableDebtAddress, params.interestRateStrategyAddress ); bool reserveAlreadyAdded = reservesData[params.asset].id != 0 || reservesList[0] == params.asset; require(!reserveAlreadyAdded, Errors.RESERVE_ALREADY_ADDED); for (uint16 i = 0; i < params.reservesCount; i++) { if (reservesList[i] == address(0)) { reservesData[params.asset].id = i; reservesList[i] = params.asset; return false; } } require(params.reservesCount < params.maxNumberReserves, Errors.NO_MORE_RESERVES_ALLOWED); reservesData[params.asset].id = params.reservesCount; reservesList[params.reservesCount] = params.asset; return true; } /** * @notice Rescue and transfer tokens locked in this contract * @param token The address of the token * @param to The address of the recipient * @param amount The amount of token to transfer */ function executeRescueTokens(address token, address to, uint256 amount) external { IERC20(token).safeTransfer(to, amount); } /** * @notice Mints the assets accrued through the reserve factor to the treasury in the form of aTokens * @param reservesData The state of all the reserves * @param assets The list of reserves for which the minting needs to be executed */ function executeMintToTreasury( mapping(address => DataTypes.ReserveData) storage reservesData, address[] calldata assets ) external { for (uint256 i = 0; i < assets.length; i++) { address assetAddress = assets[i]; DataTypes.ReserveData storage reserve = reservesData[assetAddress]; // this cover both inactive reserves and invalid reserves since the flag will be 0 for both if (!reserve.configuration.getActive()) { continue; } uint256 accruedToTreasury = reserve.accruedToTreasury; if (accruedToTreasury != 0) { reserve.accruedToTreasury = 0; uint256 normalizedIncome = reserve.getNormalizedIncome(); uint256 amountToMint = accruedToTreasury.rayMul(normalizedIncome); IAToken(reserve.aTokenAddress).mintToTreasury(amountToMint, normalizedIncome); emit MintedToTreasury(assetAddress, amountToMint); } } } /** * @notice Resets the isolation mode total debt of the given asset to zero * @dev It requires the given asset has zero debt ceiling * @param reservesData The state of all the reserves * @param asset The address of the underlying asset to reset the isolationModeTotalDebt */ function executeResetIsolationModeTotalDebt( mapping(address => DataTypes.ReserveData) storage reservesData, address asset ) external { require(reservesData[asset].configuration.getDebtCeiling() == 0, Errors.DEBT_CEILING_NOT_ZERO); reservesData[asset].isolationModeTotalDebt = 0; emit IsolationModeTotalDebtUpdated(asset, 0); } /** * @notice Drop a reserve * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param asset The address of the underlying asset of the reserve */ function executeDropReserve( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, address asset ) external { DataTypes.ReserveData storage reserve = reservesData[asset]; ValidationLogic.validateDropReserve(reservesList, reserve, asset); reservesList[reservesData[asset].id] = address(0); delete reservesData[asset]; } /** * @notice Returns the user account data across all the reserves * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param params Additional params needed for the calculation * @return totalCollateralBase The total collateral of the user in the base currency used by the price feed * @return totalDebtBase The total debt of the user in the base currency used by the price feed * @return availableBorrowsBase The borrowing power left of the user in the base currency used by the price feed * @return currentLiquidationThreshold The liquidation threshold of the user * @return ltv The loan to value of The user * @return healthFactor The current health factor of the user */ function executeGetUserAccountData( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.CalculateUserAccountDataParams memory params ) external view returns ( uint256 totalCollateralBase, uint256 totalDebtBase, uint256 availableBorrowsBase, uint256 currentLiquidationThreshold, uint256 ltv, uint256 healthFactor ) { ( totalCollateralBase, totalDebtBase, ltv, currentLiquidationThreshold, healthFactor, ) = GenericLogic.calculateUserAccountData(reservesData, reservesList, eModeCategories, params); availableBorrowsBase = GenericLogic.calculateAvailableBorrows( totalCollateralBase, totalDebtBase, ltv ); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {IStableDebtToken} from '../../../interfaces/IStableDebtToken.sol'; import {IVariableDebtToken} from '../../../interfaces/IVariableDebtToken.sol'; import {IReserveInterestRateStrategy} from '../../../interfaces/IReserveInterestRateStrategy.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {MathUtils} from '../math/MathUtils.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {Errors} from '../helpers/Errors.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; /** * @title ReserveLogic library * @author Aave * @notice Implements the logic to update the reserves state */ library ReserveLogic { using WadRayMath for uint256; using PercentageMath for uint256; using SafeCast for uint256; using GPv2SafeERC20 for IERC20; using ReserveLogic for DataTypes.ReserveData; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; // See `IPool` for descriptions event ReserveDataUpdated( address indexed reserve, uint256 liquidityRate, uint256 stableBorrowRate, uint256 variableBorrowRate, uint256 liquidityIndex, uint256 variableBorrowIndex ); /** * @notice Returns the ongoing normalized income for the reserve. * @dev A value of 1e27 means there is no income. As time passes, the income is accrued * @dev A value of 2*1e27 means for each unit of asset one unit of income has been accrued * @param reserve The reserve object * @return The normalized income, expressed in ray */ function getNormalizedIncome( DataTypes.ReserveData storage reserve ) internal view returns (uint256) { uint40 timestamp = reserve.lastUpdateTimestamp; //solium-disable-next-line if (timestamp == block.timestamp) { //if the index was updated in the same block, no need to perform any calculation return reserve.liquidityIndex; } else { return MathUtils.calculateLinearInterest(reserve.currentLiquidityRate, timestamp).rayMul( reserve.liquidityIndex ); } } /** * @notice Returns the ongoing normalized variable debt for the reserve. * @dev A value of 1e27 means there is no debt. As time passes, the debt is accrued * @dev A value of 2*1e27 means that for each unit of debt, one unit worth of interest has been accumulated * @param reserve The reserve object * @return The normalized variable debt, expressed in ray */ function getNormalizedDebt( DataTypes.ReserveData storage reserve ) internal view returns (uint256) { uint40 timestamp = reserve.lastUpdateTimestamp; //solium-disable-next-line if (timestamp == block.timestamp) { //if the index was updated in the same block, no need to perform any calculation return reserve.variableBorrowIndex; } else { return MathUtils.calculateCompoundedInterest(reserve.currentVariableBorrowRate, timestamp).rayMul( reserve.variableBorrowIndex ); } } /** * @notice Updates the liquidity cumulative index and the variable borrow index. * @param reserve The reserve object * @param reserveCache The caching layer for the reserve data */ function updateState( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache ) internal { // If time didn't pass since last stored timestamp, skip state update //solium-disable-next-line if (reserve.lastUpdateTimestamp == uint40(block.timestamp)) { return; } _updateIndexes(reserve, reserveCache); _accrueToTreasury(reserve, reserveCache); //solium-disable-next-line reserve.lastUpdateTimestamp = uint40(block.timestamp); } /** * @notice Accumulates a predefined amount of asset to the reserve as a fixed, instantaneous income. Used for example * to accumulate the flashloan fee to the reserve, and spread it between all the suppliers. * @param reserve The reserve object * @param totalLiquidity The total liquidity available in the reserve * @param amount The amount to accumulate * @return The next liquidity index of the reserve */ function cumulateToLiquidityIndex( DataTypes.ReserveData storage reserve, uint256 totalLiquidity, uint256 amount ) internal returns (uint256) { //next liquidity index is calculated this way: `((amount / totalLiquidity) + 1) * liquidityIndex` //division `amount / totalLiquidity` done in ray for precision uint256 result = (amount.wadToRay().rayDiv(totalLiquidity.wadToRay()) + WadRayMath.RAY).rayMul( reserve.liquidityIndex ); reserve.liquidityIndex = result.toUint128(); return result; } /** * @notice Initializes a reserve. * @param reserve The reserve object * @param aTokenAddress The address of the overlying atoken contract * @param stableDebtTokenAddress The address of the overlying stable debt token contract * @param variableDebtTokenAddress The address of the overlying variable debt token contract * @param interestRateStrategyAddress The address of the interest rate strategy contract */ function init( DataTypes.ReserveData storage reserve, address aTokenAddress, address stableDebtTokenAddress, address variableDebtTokenAddress, address interestRateStrategyAddress ) internal { require(reserve.aTokenAddress == address(0), Errors.RESERVE_ALREADY_INITIALIZED); reserve.liquidityIndex = uint128(WadRayMath.RAY); reserve.variableBorrowIndex = uint128(WadRayMath.RAY); reserve.aTokenAddress = aTokenAddress; reserve.stableDebtTokenAddress = stableDebtTokenAddress; reserve.variableDebtTokenAddress = variableDebtTokenAddress; reserve.interestRateStrategyAddress = interestRateStrategyAddress; } struct UpdateInterestRatesLocalVars { uint256 nextLiquidityRate; uint256 nextStableRate; uint256 nextVariableRate; uint256 totalVariableDebt; } /** * @notice Updates the reserve current stable borrow rate, the current variable borrow rate and the current liquidity rate. * @param reserve The reserve reserve to be updated * @param reserveCache The caching layer for the reserve data * @param reserveAddress The address of the reserve to be updated * @param liquidityAdded The amount of liquidity added to the protocol (supply or repay) in the previous action * @param liquidityTaken The amount of liquidity taken from the protocol (redeem or borrow) */ function updateInterestRates( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache, address reserveAddress, uint256 liquidityAdded, uint256 liquidityTaken ) internal { UpdateInterestRatesLocalVars memory vars; vars.totalVariableDebt = reserveCache.nextScaledVariableDebt.rayMul( reserveCache.nextVariableBorrowIndex ); ( vars.nextLiquidityRate, vars.nextStableRate, vars.nextVariableRate ) = IReserveInterestRateStrategy(reserve.interestRateStrategyAddress).calculateInterestRates( DataTypes.CalculateInterestRatesParams({ unbacked: reserve.unbacked, liquidityAdded: liquidityAdded, liquidityTaken: liquidityTaken, totalStableDebt: reserveCache.nextTotalStableDebt, totalVariableDebt: vars.totalVariableDebt, averageStableBorrowRate: reserveCache.nextAvgStableBorrowRate, reserveFactor: reserveCache.reserveFactor, reserve: reserveAddress, aToken: reserveCache.aTokenAddress }) ); reserve.currentLiquidityRate = vars.nextLiquidityRate.toUint128(); reserve.currentStableBorrowRate = vars.nextStableRate.toUint128(); reserve.currentVariableBorrowRate = vars.nextVariableRate.toUint128(); emit ReserveDataUpdated( reserveAddress, vars.nextLiquidityRate, vars.nextStableRate, vars.nextVariableRate, reserveCache.nextLiquidityIndex, reserveCache.nextVariableBorrowIndex ); } struct AccrueToTreasuryLocalVars { uint256 prevTotalStableDebt; uint256 prevTotalVariableDebt; uint256 currTotalVariableDebt; uint256 cumulatedStableInterest; uint256 totalDebtAccrued; uint256 amountToMint; } /** * @notice Mints part of the repaid interest to the reserve treasury as a function of the reserve factor for the * specific asset. * @param reserve The reserve to be updated * @param reserveCache The caching layer for the reserve data */ function _accrueToTreasury( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache ) internal { AccrueToTreasuryLocalVars memory vars; if (reserveCache.reserveFactor == 0) { return; } //calculate the total variable debt at moment of the last interaction vars.prevTotalVariableDebt = reserveCache.currScaledVariableDebt.rayMul( reserveCache.currVariableBorrowIndex ); //calculate the new total variable debt after accumulation of the interest on the index vars.currTotalVariableDebt = reserveCache.currScaledVariableDebt.rayMul( reserveCache.nextVariableBorrowIndex ); //calculate the stable debt until the last timestamp update vars.cumulatedStableInterest = MathUtils.calculateCompoundedInterest( reserveCache.currAvgStableBorrowRate, reserveCache.stableDebtLastUpdateTimestamp, reserveCache.reserveLastUpdateTimestamp ); vars.prevTotalStableDebt = reserveCache.currPrincipalStableDebt.rayMul( vars.cumulatedStableInterest ); //debt accrued is the sum of the current debt minus the sum of the debt at the last update vars.totalDebtAccrued = vars.currTotalVariableDebt + reserveCache.currTotalStableDebt - vars.prevTotalVariableDebt - vars.prevTotalStableDebt; vars.amountToMint = vars.totalDebtAccrued.percentMul(reserveCache.reserveFactor); if (vars.amountToMint != 0) { reserve.accruedToTreasury += vars .amountToMint .rayDiv(reserveCache.nextLiquidityIndex) .toUint128(); } } /** * @notice Updates the reserve indexes and the timestamp of the update. * @param reserve The reserve reserve to be updated * @param reserveCache The cache layer holding the cached protocol data */ function _updateIndexes( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache ) internal { // Only cumulating on the supply side if there is any income being produced // The case of Reserve Factor 100% is not a problem (currentLiquidityRate == 0), // as liquidity index should not be updated if (reserveCache.currLiquidityRate != 0) { uint256 cumulatedLiquidityInterest = MathUtils.calculateLinearInterest( reserveCache.currLiquidityRate, reserveCache.reserveLastUpdateTimestamp ); reserveCache.nextLiquidityIndex = cumulatedLiquidityInterest.rayMul( reserveCache.currLiquidityIndex ); reserve.liquidityIndex = reserveCache.nextLiquidityIndex.toUint128(); } // Variable borrow index only gets updated if there is any variable debt. // reserveCache.currVariableBorrowRate != 0 is not a correct validation, // because a positive base variable rate can be stored on // reserveCache.currVariableBorrowRate, but the index should not increase if (reserveCache.currScaledVariableDebt != 0) { uint256 cumulatedVariableBorrowInterest = MathUtils.calculateCompoundedInterest( reserveCache.currVariableBorrowRate, reserveCache.reserveLastUpdateTimestamp ); reserveCache.nextVariableBorrowIndex = cumulatedVariableBorrowInterest.rayMul( reserveCache.currVariableBorrowIndex ); reserve.variableBorrowIndex = reserveCache.nextVariableBorrowIndex.toUint128(); } } /** * @notice Creates a cache object to avoid repeated storage reads and external contract calls when updating state and * interest rates. * @param reserve The reserve object for which the cache will be filled * @return The cache object */ function cache( DataTypes.ReserveData storage reserve ) internal view returns (DataTypes.ReserveCache memory) { DataTypes.ReserveCache memory reserveCache; reserveCache.reserveConfiguration = reserve.configuration; reserveCache.reserveFactor = reserveCache.reserveConfiguration.getReserveFactor(); reserveCache.currLiquidityIndex = reserveCache.nextLiquidityIndex = reserve.liquidityIndex; reserveCache.currVariableBorrowIndex = reserveCache.nextVariableBorrowIndex = reserve .variableBorrowIndex; reserveCache.currLiquidityRate = reserve.currentLiquidityRate; reserveCache.currVariableBorrowRate = reserve.currentVariableBorrowRate; reserveCache.aTokenAddress = reserve.aTokenAddress; reserveCache.stableDebtTokenAddress = reserve.stableDebtTokenAddress; reserveCache.variableDebtTokenAddress = reserve.variableDebtTokenAddress; reserveCache.reserveLastUpdateTimestamp = reserve.lastUpdateTimestamp; reserveCache.currScaledVariableDebt = reserveCache.nextScaledVariableDebt = IVariableDebtToken( reserveCache.variableDebtTokenAddress ).scaledTotalSupply(); ( reserveCache.currPrincipalStableDebt, reserveCache.currTotalStableDebt, reserveCache.currAvgStableBorrowRate, reserveCache.stableDebtLastUpdateTimestamp ) = IStableDebtToken(reserveCache.stableDebtTokenAddress).getSupplyData(); // by default the actions are considered as not affecting the debt balances. // if the action involves mint/burn of debt, the cache needs to be updated reserveCache.nextTotalStableDebt = reserveCache.currTotalStableDebt; reserveCache.nextAvgStableBorrowRate = reserveCache.currAvgStableBorrowRate; return reserveCache; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {Errors} from '../helpers/Errors.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {ValidationLogic} from './ValidationLogic.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; /** * @title SupplyLogic library * @author Aave * @notice Implements the base logic for supply/withdraw */ library SupplyLogic { using ReserveLogic for DataTypes.ReserveCache; using ReserveLogic for DataTypes.ReserveData; using GPv2SafeERC20 for IERC20; using UserConfiguration for DataTypes.UserConfigurationMap; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using WadRayMath for uint256; using PercentageMath for uint256; // See `IPool` for descriptions event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user); event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user); event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount); event Supply( address indexed reserve, address user, address indexed onBehalfOf, uint256 amount, uint16 indexed referralCode ); /** * @notice Implements the supply feature. Through `supply()`, users supply assets to the Aave protocol. * @dev Emits the `Supply()` event. * @dev In the first supply action, `ReserveUsedAsCollateralEnabled()` is emitted, if the asset can be enabled as * collateral. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the supply function */ function executeSupply( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ExecuteSupplyParams memory params ) external { DataTypes.ReserveData storage reserve = reservesData[params.asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); ValidationLogic.validateSupply(reserveCache, reserve, params.amount); reserve.updateInterestRates(reserveCache, params.asset, params.amount, 0); IERC20(params.asset).safeTransferFrom(msg.sender, reserveCache.aTokenAddress, params.amount); bool isFirstSupply = IAToken(reserveCache.aTokenAddress).mint( msg.sender, params.onBehalfOf, params.amount, reserveCache.nextLiquidityIndex ); if (isFirstSupply) { if ( ValidationLogic.validateAutomaticUseAsCollateral( reservesData, reservesList, userConfig, reserveCache.reserveConfiguration, reserveCache.aTokenAddress ) ) { userConfig.setUsingAsCollateral(reserve.id, true); emit ReserveUsedAsCollateralEnabled(params.asset, params.onBehalfOf); } } emit Supply(params.asset, msg.sender, params.onBehalfOf, params.amount, params.referralCode); } /** * @notice Implements the withdraw feature. Through `withdraw()`, users redeem their aTokens for the underlying asset * previously supplied in the Aave protocol. * @dev Emits the `Withdraw()` event. * @dev If the user withdraws everything, `ReserveUsedAsCollateralDisabled()` is emitted. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The user configuration mapping that tracks the supplied/borrowed assets * @param params The additional parameters needed to execute the withdraw function * @return The actual amount withdrawn */ function executeWithdraw( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ExecuteWithdrawParams memory params ) external returns (uint256) { DataTypes.ReserveData storage reserve = reservesData[params.asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); reserve.updateState(reserveCache); uint256 userBalance = IAToken(reserveCache.aTokenAddress).scaledBalanceOf(msg.sender).rayMul( reserveCache.nextLiquidityIndex ); uint256 amountToWithdraw = params.amount; if (params.amount == type(uint256).max) { amountToWithdraw = userBalance; } ValidationLogic.validateWithdraw(reserveCache, amountToWithdraw, userBalance); reserve.updateInterestRates(reserveCache, params.asset, 0, amountToWithdraw); bool isCollateral = userConfig.isUsingAsCollateral(reserve.id); if (isCollateral && amountToWithdraw == userBalance) { userConfig.setUsingAsCollateral(reserve.id, false); emit ReserveUsedAsCollateralDisabled(params.asset, msg.sender); } IAToken(reserveCache.aTokenAddress).burn( msg.sender, params.to, amountToWithdraw, reserveCache.nextLiquidityIndex ); if (isCollateral && userConfig.isBorrowingAny()) { ValidationLogic.validateHFAndLtv( reservesData, reservesList, eModeCategories, userConfig, params.asset, msg.sender, params.reservesCount, params.oracle, params.userEModeCategory ); } emit Withdraw(params.asset, msg.sender, params.to, amountToWithdraw); return amountToWithdraw; } /** * @notice Validates a transfer of aTokens. The sender is subjected to health factor validation to avoid * collateralization constraints violation. * @dev Emits the `ReserveUsedAsCollateralEnabled()` event for the `to` account, if the asset is being activated as * collateral. * @dev In case the `from` user transfers everything, `ReserveUsedAsCollateralDisabled()` is emitted for `from`. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param usersConfig The users configuration mapping that track the supplied/borrowed assets * @param params The additional parameters needed to execute the finalizeTransfer function */ function executeFinalizeTransfer( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, mapping(address => DataTypes.UserConfigurationMap) storage usersConfig, DataTypes.FinalizeTransferParams memory params ) external { DataTypes.ReserveData storage reserve = reservesData[params.asset]; ValidationLogic.validateTransfer(reserve); uint256 reserveId = reserve.id; if (params.from != params.to && params.amount != 0) { DataTypes.UserConfigurationMap storage fromConfig = usersConfig[params.from]; if (fromConfig.isUsingAsCollateral(reserveId)) { if (fromConfig.isBorrowingAny()) { ValidationLogic.validateHFAndLtv( reservesData, reservesList, eModeCategories, usersConfig[params.from], params.asset, params.from, params.reservesCount, params.oracle, params.fromEModeCategory ); } if (params.balanceFromBefore == params.amount) { fromConfig.setUsingAsCollateral(reserveId, false); emit ReserveUsedAsCollateralDisabled(params.asset, params.from); } } if (params.balanceToBefore == 0) { DataTypes.UserConfigurationMap storage toConfig = usersConfig[params.to]; if ( ValidationLogic.validateAutomaticUseAsCollateral( reservesData, reservesList, toConfig, reserve.configuration, reserve.aTokenAddress ) ) { toConfig.setUsingAsCollateral(reserveId, true); emit ReserveUsedAsCollateralEnabled(params.asset, params.to); } } } } /** * @notice Executes the 'set as collateral' feature. A user can choose to activate or deactivate an asset as * collateral at any point in time. Deactivating an asset as collateral is subjected to the usual health factor * checks to ensure collateralization. * @dev Emits the `ReserveUsedAsCollateralEnabled()` event if the asset can be activated as collateral. * @dev In case the asset is being deactivated as collateral, `ReserveUsedAsCollateralDisabled()` is emitted. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The users configuration mapping that track the supplied/borrowed assets * @param asset The address of the asset being configured as collateral * @param useAsCollateral True if the user wants to set the asset as collateral, false otherwise * @param reservesCount The number of initialized reserves * @param priceOracle The address of the price oracle * @param userEModeCategory The eMode category chosen by the user */ function executeUseReserveAsCollateral( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap storage userConfig, address asset, bool useAsCollateral, uint256 reservesCount, address priceOracle, uint8 userEModeCategory ) external { DataTypes.ReserveData storage reserve = reservesData[asset]; DataTypes.ReserveCache memory reserveCache = reserve.cache(); uint256 userBalance = IERC20(reserveCache.aTokenAddress).balanceOf(msg.sender); ValidationLogic.validateSetUseReserveAsCollateral(reserveCache, userBalance); if (useAsCollateral == userConfig.isUsingAsCollateral(reserve.id)) return; if (useAsCollateral) { require( ValidationLogic.validateUseAsCollateral( reservesData, reservesList, userConfig, reserveCache.reserveConfiguration ), Errors.USER_IN_ISOLATION_MODE_OR_LTV_ZERO ); userConfig.setUsingAsCollateral(reserve.id, true); emit ReserveUsedAsCollateralEnabled(asset, msg.sender); } else { userConfig.setUsingAsCollateral(reserve.id, false); ValidationLogic.validateHFAndLtv( reservesData, reservesList, eModeCategories, userConfig, asset, msg.sender, reservesCount, priceOracle, userEModeCategory ); emit ReserveUsedAsCollateralDisabled(asset, msg.sender); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {Address} from '../../../dependencies/openzeppelin/contracts/Address.sol'; import {GPv2SafeERC20} from '../../../dependencies/gnosis/contracts/GPv2SafeERC20.sol'; import {IReserveInterestRateStrategy} from '../../../interfaces/IReserveInterestRateStrategy.sol'; import {IStableDebtToken} from '../../../interfaces/IStableDebtToken.sol'; import {IScaledBalanceToken} from '../../../interfaces/IScaledBalanceToken.sol'; import {IPriceOracleGetter} from '../../../interfaces/IPriceOracleGetter.sol'; import {IAToken} from '../../../interfaces/IAToken.sol'; import {IPriceOracleSentinel} from '../../../interfaces/IPriceOracleSentinel.sol'; import {IPoolAddressesProvider} from '../../../interfaces/IPoolAddressesProvider.sol'; import {IAccessControl} from '../../../dependencies/openzeppelin/contracts/IAccessControl.sol'; import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol'; import {UserConfiguration} from '../configuration/UserConfiguration.sol'; import {Errors} from '../helpers/Errors.sol'; import {WadRayMath} from '../math/WadRayMath.sol'; import {PercentageMath} from '../math/PercentageMath.sol'; import {DataTypes} from '../types/DataTypes.sol'; import {ReserveLogic} from './ReserveLogic.sol'; import {GenericLogic} from './GenericLogic.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; import {IncentivizedERC20} from '../../tokenization/base/IncentivizedERC20.sol'; /** * @title ReserveLogic library * @author Aave * @notice Implements functions to validate the different actions of the protocol */ library ValidationLogic { using ReserveLogic for DataTypes.ReserveData; using WadRayMath for uint256; using PercentageMath for uint256; using SafeCast for uint256; using GPv2SafeERC20 for IERC20; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using UserConfiguration for DataTypes.UserConfigurationMap; using Address for address; // Factor to apply to "only-variable-debt" liquidity rate to get threshold for rebalancing, expressed in bps // A value of 0.9e4 results in 90% uint256 public constant REBALANCE_UP_LIQUIDITY_RATE_THRESHOLD = 0.9e4; // Minimum health factor allowed under any circumstance // A value of 0.95e18 results in 0.95 uint256 public constant MINIMUM_HEALTH_FACTOR_LIQUIDATION_THRESHOLD = 0.95e18; /** * @dev Minimum health factor to consider a user position healthy * A value of 1e18 results in 1 */ uint256 public constant HEALTH_FACTOR_LIQUIDATION_THRESHOLD = 1e18; /** * @dev Role identifier for the role allowed to supply isolated reserves as collateral */ bytes32 public constant ISOLATED_COLLATERAL_SUPPLIER_ROLE = keccak256('ISOLATED_COLLATERAL_SUPPLIER'); /** * @notice Validates a supply action. * @param reserveCache The cached data of the reserve * @param amount The amount to be supplied */ function validateSupply( DataTypes.ReserveCache memory reserveCache, DataTypes.ReserveData storage reserve, uint256 amount ) internal view { require(amount != 0, Errors.INVALID_AMOUNT); (bool isActive, bool isFrozen, , , bool isPaused) = reserveCache .reserveConfiguration .getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); require(!isFrozen, Errors.RESERVE_FROZEN); uint256 supplyCap = reserveCache.reserveConfiguration.getSupplyCap(); require( supplyCap == 0 || ((IAToken(reserveCache.aTokenAddress).scaledTotalSupply() + uint256(reserve.accruedToTreasury)).rayMul(reserveCache.nextLiquidityIndex) + amount) <= supplyCap * (10 ** reserveCache.reserveConfiguration.getDecimals()), Errors.SUPPLY_CAP_EXCEEDED ); } /** * @notice Validates a withdraw action. * @param reserveCache The cached data of the reserve * @param amount The amount to be withdrawn * @param userBalance The balance of the user */ function validateWithdraw( DataTypes.ReserveCache memory reserveCache, uint256 amount, uint256 userBalance ) internal pure { require(amount != 0, Errors.INVALID_AMOUNT); require(amount <= userBalance, Errors.NOT_ENOUGH_AVAILABLE_USER_BALANCE); (bool isActive, , , , bool isPaused) = reserveCache.reserveConfiguration.getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); } struct ValidateBorrowLocalVars { uint256 currentLtv; uint256 collateralNeededInBaseCurrency; uint256 userCollateralInBaseCurrency; uint256 userDebtInBaseCurrency; uint256 availableLiquidity; uint256 healthFactor; uint256 totalDebt; uint256 totalSupplyVariableDebt; uint256 reserveDecimals; uint256 borrowCap; uint256 amountInBaseCurrency; uint256 assetUnit; address eModePriceSource; address siloedBorrowingAddress; bool isActive; bool isFrozen; bool isPaused; bool borrowingEnabled; bool stableRateBorrowingEnabled; bool siloedBorrowingEnabled; } /** * @notice Validates a borrow action. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param params Additional params needed for the validation */ function validateBorrow( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.ValidateBorrowParams memory params ) internal view { require(params.amount != 0, Errors.INVALID_AMOUNT); ValidateBorrowLocalVars memory vars; ( vars.isActive, vars.isFrozen, vars.borrowingEnabled, vars.stableRateBorrowingEnabled, vars.isPaused ) = params.reserveCache.reserveConfiguration.getFlags(); require(vars.isActive, Errors.RESERVE_INACTIVE); require(!vars.isPaused, Errors.RESERVE_PAUSED); require(!vars.isFrozen, Errors.RESERVE_FROZEN); require(vars.borrowingEnabled, Errors.BORROWING_NOT_ENABLED); require( params.priceOracleSentinel == address(0) || IPriceOracleSentinel(params.priceOracleSentinel).isBorrowAllowed(), Errors.PRICE_ORACLE_SENTINEL_CHECK_FAILED ); //validate interest rate mode require( params.interestRateMode == DataTypes.InterestRateMode.VARIABLE || params.interestRateMode == DataTypes.InterestRateMode.STABLE, Errors.INVALID_INTEREST_RATE_MODE_SELECTED ); vars.reserveDecimals = params.reserveCache.reserveConfiguration.getDecimals(); vars.borrowCap = params.reserveCache.reserveConfiguration.getBorrowCap(); unchecked { vars.assetUnit = 10 ** vars.reserveDecimals; } if (vars.borrowCap != 0) { vars.totalSupplyVariableDebt = params.reserveCache.currScaledVariableDebt.rayMul( params.reserveCache.nextVariableBorrowIndex ); vars.totalDebt = params.reserveCache.currTotalStableDebt + vars.totalSupplyVariableDebt + params.amount; unchecked { require(vars.totalDebt <= vars.borrowCap * vars.assetUnit, Errors.BORROW_CAP_EXCEEDED); } } if (params.isolationModeActive) { // check that the asset being borrowed is borrowable in isolation mode AND // the total exposure is no bigger than the collateral debt ceiling require( params.reserveCache.reserveConfiguration.getBorrowableInIsolation(), Errors.ASSET_NOT_BORROWABLE_IN_ISOLATION ); require( reservesData[params.isolationModeCollateralAddress].isolationModeTotalDebt + (params.amount / 10 ** (vars.reserveDecimals - ReserveConfiguration.DEBT_CEILING_DECIMALS)) .toUint128() <= params.isolationModeDebtCeiling, Errors.DEBT_CEILING_EXCEEDED ); } if (params.userEModeCategory != 0) { require( params.reserveCache.reserveConfiguration.getEModeCategory() == params.userEModeCategory, Errors.INCONSISTENT_EMODE_CATEGORY ); vars.eModePriceSource = eModeCategories[params.userEModeCategory].priceSource; } ( vars.userCollateralInBaseCurrency, vars.userDebtInBaseCurrency, vars.currentLtv, , vars.healthFactor, ) = GenericLogic.calculateUserAccountData( reservesData, reservesList, eModeCategories, DataTypes.CalculateUserAccountDataParams({ userConfig: params.userConfig, reservesCount: params.reservesCount, user: params.userAddress, oracle: params.oracle, userEModeCategory: params.userEModeCategory }) ); require(vars.userCollateralInBaseCurrency != 0, Errors.COLLATERAL_BALANCE_IS_ZERO); require(vars.currentLtv != 0, Errors.LTV_VALIDATION_FAILED); require( vars.healthFactor > HEALTH_FACTOR_LIQUIDATION_THRESHOLD, Errors.HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD ); vars.amountInBaseCurrency = IPriceOracleGetter(params.oracle).getAssetPrice( vars.eModePriceSource != address(0) ? vars.eModePriceSource : params.asset ) * params.amount; unchecked { vars.amountInBaseCurrency /= vars.assetUnit; } //add the current already borrowed amount to the amount requested to calculate the total collateral needed. vars.collateralNeededInBaseCurrency = (vars.userDebtInBaseCurrency + vars.amountInBaseCurrency) .percentDiv(vars.currentLtv); //LTV is calculated in percentage require( vars.collateralNeededInBaseCurrency <= vars.userCollateralInBaseCurrency, Errors.COLLATERAL_CANNOT_COVER_NEW_BORROW ); /** * Following conditions need to be met if the user is borrowing at a stable rate: * 1. Reserve must be enabled for stable rate borrowing * 2. Users cannot borrow from the reserve if their collateral is (mostly) the same currency * they are borrowing, to prevent abuses. * 3. Users will be able to borrow only a portion of the total available liquidity */ if (params.interestRateMode == DataTypes.InterestRateMode.STABLE) { //check if the borrow mode is stable and if stable rate borrowing is enabled on this reserve require(vars.stableRateBorrowingEnabled, Errors.STABLE_BORROWING_NOT_ENABLED); require( !params.userConfig.isUsingAsCollateral(reservesData[params.asset].id) || params.reserveCache.reserveConfiguration.getLtv() == 0 || params.amount > IERC20(params.reserveCache.aTokenAddress).balanceOf(params.userAddress), Errors.COLLATERAL_SAME_AS_BORROWING_CURRENCY ); vars.availableLiquidity = IERC20(params.asset).balanceOf(params.reserveCache.aTokenAddress); //calculate the max available loan size in stable rate mode as a percentage of the //available liquidity uint256 maxLoanSizeStable = vars.availableLiquidity.percentMul(params.maxStableLoanPercent); require(params.amount <= maxLoanSizeStable, Errors.AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE); } if (params.userConfig.isBorrowingAny()) { (vars.siloedBorrowingEnabled, vars.siloedBorrowingAddress) = params .userConfig .getSiloedBorrowingState(reservesData, reservesList); if (vars.siloedBorrowingEnabled) { require(vars.siloedBorrowingAddress == params.asset, Errors.SILOED_BORROWING_VIOLATION); } else { require( !params.reserveCache.reserveConfiguration.getSiloedBorrowing(), Errors.SILOED_BORROWING_VIOLATION ); } } } /** * @notice Validates a repay action. * @param reserveCache The cached data of the reserve * @param amountSent The amount sent for the repayment. Can be an actual value or uint(-1) * @param interestRateMode The interest rate mode of the debt being repaid * @param onBehalfOf The address of the user msg.sender is repaying for * @param stableDebt The borrow balance of the user * @param variableDebt The borrow balance of the user */ function validateRepay( DataTypes.ReserveCache memory reserveCache, uint256 amountSent, DataTypes.InterestRateMode interestRateMode, address onBehalfOf, uint256 stableDebt, uint256 variableDebt ) internal view { require(amountSent != 0, Errors.INVALID_AMOUNT); require( amountSent != type(uint256).max || msg.sender == onBehalfOf, Errors.NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF ); (bool isActive, , , , bool isPaused) = reserveCache.reserveConfiguration.getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); require( (stableDebt != 0 && interestRateMode == DataTypes.InterestRateMode.STABLE) || (variableDebt != 0 && interestRateMode == DataTypes.InterestRateMode.VARIABLE), Errors.NO_DEBT_OF_SELECTED_TYPE ); } /** * @notice Validates a swap of borrow rate mode. * @param reserve The reserve state on which the user is swapping the rate * @param reserveCache The cached data of the reserve * @param userConfig The user reserves configuration * @param stableDebt The stable debt of the user * @param variableDebt The variable debt of the user * @param currentRateMode The rate mode of the debt being swapped */ function validateSwapRateMode( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache, DataTypes.UserConfigurationMap storage userConfig, uint256 stableDebt, uint256 variableDebt, DataTypes.InterestRateMode currentRateMode ) internal view { (bool isActive, bool isFrozen, , bool stableRateEnabled, bool isPaused) = reserveCache .reserveConfiguration .getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); require(!isFrozen, Errors.RESERVE_FROZEN); if (currentRateMode == DataTypes.InterestRateMode.STABLE) { require(stableDebt != 0, Errors.NO_OUTSTANDING_STABLE_DEBT); } else if (currentRateMode == DataTypes.InterestRateMode.VARIABLE) { require(variableDebt != 0, Errors.NO_OUTSTANDING_VARIABLE_DEBT); /** * user wants to swap to stable, before swapping we need to ensure that * 1. stable borrow rate is enabled on the reserve * 2. user is not trying to abuse the reserve by supplying * more collateral than he is borrowing, artificially lowering * the interest rate, borrowing at variable, and switching to stable */ require(stableRateEnabled, Errors.STABLE_BORROWING_NOT_ENABLED); require( !userConfig.isUsingAsCollateral(reserve.id) || reserveCache.reserveConfiguration.getLtv() == 0 || stableDebt + variableDebt > IERC20(reserveCache.aTokenAddress).balanceOf(msg.sender), Errors.COLLATERAL_SAME_AS_BORROWING_CURRENCY ); } else { revert(Errors.INVALID_INTEREST_RATE_MODE_SELECTED); } } /** * @notice Validates a stable borrow rate rebalance action. * @dev Rebalancing is accepted when depositors are earning <= 90% of their earnings in pure supply/demand market (variable rate only) * For this to be the case, there has to be quite large stable debt with an interest rate below the current variable rate. * @param reserve The reserve state on which the user is getting rebalanced * @param reserveCache The cached state of the reserve * @param reserveAddress The address of the reserve */ function validateRebalanceStableBorrowRate( DataTypes.ReserveData storage reserve, DataTypes.ReserveCache memory reserveCache, address reserveAddress ) internal view { (bool isActive, , , , bool isPaused) = reserveCache.reserveConfiguration.getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); uint256 totalDebt = IERC20(reserveCache.stableDebtTokenAddress).totalSupply() + IERC20(reserveCache.variableDebtTokenAddress).totalSupply(); (uint256 liquidityRateVariableDebtOnly, , ) = IReserveInterestRateStrategy( reserve.interestRateStrategyAddress ).calculateInterestRates( DataTypes.CalculateInterestRatesParams({ unbacked: reserve.unbacked, liquidityAdded: 0, liquidityTaken: 0, totalStableDebt: 0, totalVariableDebt: totalDebt, averageStableBorrowRate: 0, reserveFactor: reserveCache.reserveFactor, reserve: reserveAddress, aToken: reserveCache.aTokenAddress }) ); require( reserveCache.currLiquidityRate <= liquidityRateVariableDebtOnly.percentMul(REBALANCE_UP_LIQUIDITY_RATE_THRESHOLD), Errors.INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET ); } /** * @notice Validates the action of setting an asset as collateral. * @param reserveCache The cached data of the reserve * @param userBalance The balance of the user */ function validateSetUseReserveAsCollateral( DataTypes.ReserveCache memory reserveCache, uint256 userBalance ) internal pure { require(userBalance != 0, Errors.UNDERLYING_BALANCE_ZERO); (bool isActive, , , , bool isPaused) = reserveCache.reserveConfiguration.getFlags(); require(isActive, Errors.RESERVE_INACTIVE); require(!isPaused, Errors.RESERVE_PAUSED); } /** * @notice Validates a flashloan action. * @param reservesData The state of all the reserves * @param assets The assets being flash-borrowed * @param amounts The amounts for each asset being borrowed */ function validateFlashloan( mapping(address => DataTypes.ReserveData) storage reservesData, address[] memory assets, uint256[] memory amounts ) internal view { require(assets.length == amounts.length, Errors.INCONSISTENT_FLASHLOAN_PARAMS); for (uint256 i = 0; i < assets.length; i++) { validateFlashloanSimple(reservesData[assets[i]]); } } /** * @notice Validates a flashloan action. * @param reserve The state of the reserve */ function validateFlashloanSimple(DataTypes.ReserveData storage reserve) internal view { DataTypes.ReserveConfigurationMap memory configuration = reserve.configuration; require(!configuration.getPaused(), Errors.RESERVE_PAUSED); require(configuration.getActive(), Errors.RESERVE_INACTIVE); require(configuration.getFlashLoanEnabled(), Errors.FLASHLOAN_DISABLED); } struct ValidateLiquidationCallLocalVars { bool collateralReserveActive; bool collateralReservePaused; bool principalReserveActive; bool principalReservePaused; bool isCollateralEnabled; } /** * @notice Validates the liquidation action. * @param userConfig The user configuration mapping * @param collateralReserve The reserve data of the collateral * @param params Additional parameters needed for the validation */ function validateLiquidationCall( DataTypes.UserConfigurationMap storage userConfig, DataTypes.ReserveData storage collateralReserve, DataTypes.ValidateLiquidationCallParams memory params ) internal view { ValidateLiquidationCallLocalVars memory vars; (vars.collateralReserveActive, , , , vars.collateralReservePaused) = collateralReserve .configuration .getFlags(); (vars.principalReserveActive, , , , vars.principalReservePaused) = params .debtReserveCache .reserveConfiguration .getFlags(); require(vars.collateralReserveActive && vars.principalReserveActive, Errors.RESERVE_INACTIVE); require(!vars.collateralReservePaused && !vars.principalReservePaused, Errors.RESERVE_PAUSED); require( params.priceOracleSentinel == address(0) || params.healthFactor < MINIMUM_HEALTH_FACTOR_LIQUIDATION_THRESHOLD || IPriceOracleSentinel(params.priceOracleSentinel).isLiquidationAllowed(), Errors.PRICE_ORACLE_SENTINEL_CHECK_FAILED ); require( params.healthFactor < HEALTH_FACTOR_LIQUIDATION_THRESHOLD, Errors.HEALTH_FACTOR_NOT_BELOW_THRESHOLD ); vars.isCollateralEnabled = collateralReserve.configuration.getLiquidationThreshold() != 0 && userConfig.isUsingAsCollateral(collateralReserve.id); //if collateral isn't enabled as collateral by user, it cannot be liquidated require(vars.isCollateralEnabled, Errors.COLLATERAL_CANNOT_BE_LIQUIDATED); require(params.totalDebt != 0, Errors.SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER); } /** * @notice Validates the health factor of a user. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The state of the user for the specific reserve * @param user The user to validate health factor of * @param userEModeCategory The users active efficiency mode category * @param reservesCount The number of available reserves * @param oracle The price oracle */ function validateHealthFactor( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap memory userConfig, address user, uint8 userEModeCategory, uint256 reservesCount, address oracle ) internal view returns (uint256, bool) { (, , , , uint256 healthFactor, bool hasZeroLtvCollateral) = GenericLogic .calculateUserAccountData( reservesData, reservesList, eModeCategories, DataTypes.CalculateUserAccountDataParams({ userConfig: userConfig, reservesCount: reservesCount, user: user, oracle: oracle, userEModeCategory: userEModeCategory }) ); require( healthFactor >= HEALTH_FACTOR_LIQUIDATION_THRESHOLD, Errors.HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD ); return (healthFactor, hasZeroLtvCollateral); } /** * @notice Validates the health factor of a user and the ltv of the asset being withdrawn. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories The configuration of all the efficiency mode categories * @param userConfig The state of the user for the specific reserve * @param asset The asset for which the ltv will be validated * @param from The user from which the aTokens are being transferred * @param reservesCount The number of available reserves * @param oracle The price oracle * @param userEModeCategory The users active efficiency mode category */ function validateHFAndLtv( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap memory userConfig, address asset, address from, uint256 reservesCount, address oracle, uint8 userEModeCategory ) internal view { DataTypes.ReserveData memory reserve = reservesData[asset]; (, bool hasZeroLtvCollateral) = validateHealthFactor( reservesData, reservesList, eModeCategories, userConfig, from, userEModeCategory, reservesCount, oracle ); require( !hasZeroLtvCollateral || reserve.configuration.getLtv() == 0, Errors.LTV_VALIDATION_FAILED ); } /** * @notice Validates a transfer action. * @param reserve The reserve object */ function validateTransfer(DataTypes.ReserveData storage reserve) internal view { require(!reserve.configuration.getPaused(), Errors.RESERVE_PAUSED); } /** * @notice Validates a drop reserve action. * @param reservesList The addresses of all the active reserves * @param reserve The reserve object * @param asset The address of the reserve's underlying asset */ function validateDropReserve( mapping(uint256 => address) storage reservesList, DataTypes.ReserveData storage reserve, address asset ) internal view { require(asset != address(0), Errors.ZERO_ADDRESS_NOT_VALID); require(reserve.id != 0 || reservesList[0] == asset, Errors.ASSET_NOT_LISTED); require(IERC20(reserve.stableDebtTokenAddress).totalSupply() == 0, Errors.STABLE_DEBT_NOT_ZERO); require( IERC20(reserve.variableDebtTokenAddress).totalSupply() == 0, Errors.VARIABLE_DEBT_SUPPLY_NOT_ZERO ); require( IERC20(reserve.aTokenAddress).totalSupply() == 0 && reserve.accruedToTreasury == 0, Errors.UNDERLYING_CLAIMABLE_RIGHTS_NOT_ZERO ); } /** * @notice Validates the action of setting efficiency mode. * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param eModeCategories a mapping storing configurations for all efficiency mode categories * @param userConfig the user configuration * @param reservesCount The total number of valid reserves * @param categoryId The id of the category */ function validateSetUserEMode( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, mapping(uint8 => DataTypes.EModeCategory) storage eModeCategories, DataTypes.UserConfigurationMap memory userConfig, uint256 reservesCount, uint8 categoryId ) internal view { // category is invalid if the liq threshold is not set require( categoryId == 0 || eModeCategories[categoryId].liquidationThreshold != 0, Errors.INCONSISTENT_EMODE_CATEGORY ); // eMode can always be enabled if the user hasn't supplied anything if (userConfig.isEmpty()) { return; } // if user is trying to set another category than default we require that // either the user is not borrowing, or it's borrowing assets of categoryId if (categoryId != 0) { unchecked { for (uint256 i = 0; i < reservesCount; i++) { if (userConfig.isBorrowing(i)) { DataTypes.ReserveConfigurationMap memory configuration = reservesData[reservesList[i]] .configuration; require( configuration.getEModeCategory() == categoryId, Errors.INCONSISTENT_EMODE_CATEGORY ); } } } } } /** * @notice Validates the action of activating the asset as collateral. * @dev Only possible if the asset has non-zero LTV and the user is not in isolation mode * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig the user configuration * @param reserveConfig The reserve configuration * @return True if the asset can be activated as collateral, false otherwise */ function validateUseAsCollateral( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ReserveConfigurationMap memory reserveConfig ) internal view returns (bool) { if (reserveConfig.getLtv() == 0) { return false; } if (!userConfig.isUsingAsCollateralAny()) { return true; } (bool isolationModeActive, , ) = userConfig.getIsolationModeState(reservesData, reservesList); return (!isolationModeActive && reserveConfig.getDebtCeiling() == 0); } /** * @notice Validates if an asset should be automatically activated as collateral in the following actions: supply, * transfer, mint unbacked, and liquidate * @dev This is used to ensure that isolated assets are not enabled as collateral automatically * @param reservesData The state of all the reserves * @param reservesList The addresses of all the active reserves * @param userConfig the user configuration * @param reserveConfig The reserve configuration * @return True if the asset can be activated as collateral, false otherwise */ function validateAutomaticUseAsCollateral( mapping(address => DataTypes.ReserveData) storage reservesData, mapping(uint256 => address) storage reservesList, DataTypes.UserConfigurationMap storage userConfig, DataTypes.ReserveConfigurationMap memory reserveConfig, address aTokenAddress ) internal view returns (bool) { if (reserveConfig.getDebtCeiling() != 0) { // ensures only the ISOLATED_COLLATERAL_SUPPLIER_ROLE can enable collateral as side-effect of an action IPoolAddressesProvider addressesProvider = IncentivizedERC20(aTokenAddress) .POOL() .ADDRESSES_PROVIDER(); if ( !IAccessControl(addressesProvider.getACLManager()).hasRole( ISOLATED_COLLATERAL_SUPPLIER_ROLE, msg.sender ) ) return false; } return validateUseAsCollateral(reservesData, reservesList, userConfig, reserveConfig); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; import {WadRayMath} from './WadRayMath.sol'; /** * @title MathUtils library * @author Aave * @notice Provides functions to perform linear and compounded interest calculations */ library MathUtils { using WadRayMath for uint256; /// @dev Ignoring leap years uint256 internal constant SECONDS_PER_YEAR = 365 days; /** * @dev Function to calculate the interest accumulated using a linear interest rate formula * @param rate The interest rate, in ray * @param lastUpdateTimestamp The timestamp of the last update of the interest * @return The interest rate linearly accumulated during the timeDelta, in ray */ function calculateLinearInterest( uint256 rate, uint40 lastUpdateTimestamp ) internal view returns (uint256) { //solium-disable-next-line uint256 result = rate * (block.timestamp - uint256(lastUpdateTimestamp)); unchecked { result = result / SECONDS_PER_YEAR; } return WadRayMath.RAY + result; } /** * @dev Function to calculate the interest using a compounded interest rate formula * To avoid expensive exponentiation, the calculation is performed using a binomial approximation: * * (1+x)^n = 1+n*x+[n/2*(n-1)]*x^2+[n/6*(n-1)*(n-2)*x^3... * * The approximation slightly underpays liquidity providers and undercharges borrowers, with the advantage of great * gas cost reductions. The whitepaper contains reference to the approximation and a table showing the margin of * error per different time periods * * @param rate The interest rate, in ray * @param lastUpdateTimestamp The timestamp of the last update of the interest * @return The interest rate compounded during the timeDelta, in ray */ function calculateCompoundedInterest( uint256 rate, uint40 lastUpdateTimestamp, uint256 currentTimestamp ) internal pure returns (uint256) { //solium-disable-next-line uint256 exp = currentTimestamp - uint256(lastUpdateTimestamp); if (exp == 0) { return WadRayMath.RAY; } uint256 expMinusOne; uint256 expMinusTwo; uint256 basePowerTwo; uint256 basePowerThree; unchecked { expMinusOne = exp - 1; expMinusTwo = exp > 2 ? exp - 2 : 0; basePowerTwo = rate.rayMul(rate) / (SECONDS_PER_YEAR * SECONDS_PER_YEAR); basePowerThree = basePowerTwo.rayMul(rate) / SECONDS_PER_YEAR; } uint256 secondTerm = exp * expMinusOne * basePowerTwo; unchecked { secondTerm /= 2; } uint256 thirdTerm = exp * expMinusOne * expMinusTwo * basePowerThree; unchecked { thirdTerm /= 6; } return WadRayMath.RAY + (rate * exp) / SECONDS_PER_YEAR + secondTerm + thirdTerm; } /** * @dev Calculates the compounded interest between the timestamp of the last update and the current block timestamp * @param rate The interest rate (in ray) * @param lastUpdateTimestamp The timestamp from which the interest accumulation needs to be calculated * @return The interest rate compounded between lastUpdateTimestamp and current block timestamp, in ray */ function calculateCompoundedInterest( uint256 rate, uint40 lastUpdateTimestamp ) internal view returns (uint256) { return calculateCompoundedInterest(rate, lastUpdateTimestamp, block.timestamp); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; /** * @title PercentageMath library * @author Aave * @notice Provides functions to perform percentage calculations * @dev Percentages are defined by default with 2 decimals of precision (100.00). The precision is indicated by PERCENTAGE_FACTOR * @dev Operations are rounded. If a value is >=.5, will be rounded up, otherwise rounded down. */ library PercentageMath { // Maximum percentage factor (100.00%) uint256 internal constant PERCENTAGE_FACTOR = 1e4; // Half percentage factor (50.00%) uint256 internal constant HALF_PERCENTAGE_FACTOR = 0.5e4; /** * @notice Executes a percentage multiplication * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param value The value of which the percentage needs to be calculated * @param percentage The percentage of the value to be calculated * @return result value percentmul percentage */ function percentMul(uint256 value, uint256 percentage) internal pure returns (uint256 result) { // to avoid overflow, value <= (type(uint256).max - HALF_PERCENTAGE_FACTOR) / percentage assembly { if iszero( or( iszero(percentage), iszero(gt(value, div(sub(not(0), HALF_PERCENTAGE_FACTOR), percentage))) ) ) { revert(0, 0) } result := div(add(mul(value, percentage), HALF_PERCENTAGE_FACTOR), PERCENTAGE_FACTOR) } } /** * @notice Executes a percentage division * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param value The value of which the percentage needs to be calculated * @param percentage The percentage of the value to be calculated * @return result value percentdiv percentage */ function percentDiv(uint256 value, uint256 percentage) internal pure returns (uint256 result) { // to avoid overflow, value <= (type(uint256).max - halfPercentage) / PERCENTAGE_FACTOR assembly { if or( iszero(percentage), iszero(iszero(gt(value, div(sub(not(0), div(percentage, 2)), PERCENTAGE_FACTOR)))) ) { revert(0, 0) } result := div(add(mul(value, PERCENTAGE_FACTOR), div(percentage, 2)), percentage) } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; /** * @title WadRayMath library * @author Aave * @notice Provides functions to perform calculations with Wad and Ray units * @dev Provides mul and div function for wads (decimal numbers with 18 digits of precision) and rays (decimal numbers * with 27 digits of precision) * @dev Operations are rounded. If a value is >=.5, will be rounded up, otherwise rounded down. */ library WadRayMath { // HALF_WAD and HALF_RAY expressed with extended notation as constant with operations are not supported in Yul assembly uint256 internal constant WAD = 1e18; uint256 internal constant HALF_WAD = 0.5e18; uint256 internal constant RAY = 1e27; uint256 internal constant HALF_RAY = 0.5e27; uint256 internal constant WAD_RAY_RATIO = 1e9; /** * @dev Multiplies two wad, rounding half up to the nearest wad * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Wad * @param b Wad * @return c = a*b, in wad */ function wadMul(uint256 a, uint256 b) internal pure returns (uint256 c) { // to avoid overflow, a <= (type(uint256).max - HALF_WAD) / b assembly { if iszero(or(iszero(b), iszero(gt(a, div(sub(not(0), HALF_WAD), b))))) { revert(0, 0) } c := div(add(mul(a, b), HALF_WAD), WAD) } } /** * @dev Divides two wad, rounding half up to the nearest wad * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Wad * @param b Wad * @return c = a/b, in wad */ function wadDiv(uint256 a, uint256 b) internal pure returns (uint256 c) { // to avoid overflow, a <= (type(uint256).max - halfB) / WAD assembly { if or(iszero(b), iszero(iszero(gt(a, div(sub(not(0), div(b, 2)), WAD))))) { revert(0, 0) } c := div(add(mul(a, WAD), div(b, 2)), b) } } /** * @notice Multiplies two ray, rounding half up to the nearest ray * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Ray * @param b Ray * @return c = a raymul b */ function rayMul(uint256 a, uint256 b) internal pure returns (uint256 c) { // to avoid overflow, a <= (type(uint256).max - HALF_RAY) / b assembly { if iszero(or(iszero(b), iszero(gt(a, div(sub(not(0), HALF_RAY), b))))) { revert(0, 0) } c := div(add(mul(a, b), HALF_RAY), RAY) } } /** * @notice Divides two ray, rounding half up to the nearest ray * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Ray * @param b Ray * @return c = a raydiv b */ function rayDiv(uint256 a, uint256 b) internal pure returns (uint256 c) { // to avoid overflow, a <= (type(uint256).max - halfB) / RAY assembly { if or(iszero(b), iszero(iszero(gt(a, div(sub(not(0), div(b, 2)), RAY))))) { revert(0, 0) } c := div(add(mul(a, RAY), div(b, 2)), b) } } /** * @dev Casts ray down to wad * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Ray * @return b = a converted to wad, rounded half up to the nearest wad */ function rayToWad(uint256 a) internal pure returns (uint256 b) { assembly { b := div(a, WAD_RAY_RATIO) let remainder := mod(a, WAD_RAY_RATIO) if iszero(lt(remainder, div(WAD_RAY_RATIO, 2))) { b := add(b, 1) } } } /** * @dev Converts wad up to ray * @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328 * @param a Wad * @return b = a converted in ray */ function wadToRay(uint256 a) internal pure returns (uint256 b) { // to avoid overflow, b/WAD_RAY_RATIO == a assembly { b := mul(a, WAD_RAY_RATIO) if iszero(eq(div(b, WAD_RAY_RATIO), a)) { revert(0, 0) } } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; library DataTypes { struct ReserveData { //stores the reserve configuration ReserveConfigurationMap configuration; //the liquidity index. Expressed in ray uint128 liquidityIndex; //the current supply rate. Expressed in ray uint128 currentLiquidityRate; //variable borrow index. Expressed in ray uint128 variableBorrowIndex; //the current variable borrow rate. Expressed in ray uint128 currentVariableBorrowRate; //the current stable borrow rate. Expressed in ray uint128 currentStableBorrowRate; //timestamp of last update uint40 lastUpdateTimestamp; //the id of the reserve. Represents the position in the list of the active reserves uint16 id; //aToken address address aTokenAddress; //stableDebtToken address address stableDebtTokenAddress; //variableDebtToken address address variableDebtTokenAddress; //address of the interest rate strategy address interestRateStrategyAddress; //the current treasury balance, scaled uint128 accruedToTreasury; //the outstanding unbacked aTokens minted through the bridging feature uint128 unbacked; //the outstanding debt borrowed against this asset in isolation mode uint128 isolationModeTotalDebt; } struct ReserveConfigurationMap { //bit 0-15: LTV //bit 16-31: Liq. threshold //bit 32-47: Liq. bonus //bit 48-55: Decimals //bit 56: reserve is active //bit 57: reserve is frozen //bit 58: borrowing is enabled //bit 59: stable rate borrowing enabled //bit 60: asset is paused //bit 61: borrowing in isolation mode is enabled //bit 62: siloed borrowing enabled //bit 63: flashloaning enabled //bit 64-79: reserve factor //bit 80-115 borrow cap in whole tokens, borrowCap == 0 => no cap //bit 116-151 supply cap in whole tokens, supplyCap == 0 => no cap //bit 152-167 liquidation protocol fee //bit 168-175 eMode category //bit 176-211 unbacked mint cap in whole tokens, unbackedMintCap == 0 => minting disabled //bit 212-251 debt ceiling for isolation mode with (ReserveConfiguration::DEBT_CEILING_DECIMALS) decimals //bit 252-255 unused uint256 data; } struct UserConfigurationMap { /** * @dev Bitmap of the users collaterals and borrows. It is divided in pairs of bits, one pair per asset. * The first bit indicates if an asset is used as collateral by the user, the second whether an * asset is borrowed by the user. */ uint256 data; } struct EModeCategory { // each eMode category has a custom ltv and liquidation threshold uint16 ltv; uint16 liquidationThreshold; uint16 liquidationBonus; // each eMode category may or may not have a custom oracle to override the individual assets price oracles address priceSource; string label; } enum InterestRateMode {NONE, STABLE, VARIABLE} struct ReserveCache { uint256 currScaledVariableDebt; uint256 nextScaledVariableDebt; uint256 currPrincipalStableDebt; uint256 currAvgStableBorrowRate; uint256 currTotalStableDebt; uint256 nextAvgStableBorrowRate; uint256 nextTotalStableDebt; uint256 currLiquidityIndex; uint256 nextLiquidityIndex; uint256 currVariableBorrowIndex; uint256 nextVariableBorrowIndex; uint256 currLiquidityRate; uint256 currVariableBorrowRate; uint256 reserveFactor; ReserveConfigurationMap reserveConfiguration; address aTokenAddress; address stableDebtTokenAddress; address variableDebtTokenAddress; uint40 reserveLastUpdateTimestamp; uint40 stableDebtLastUpdateTimestamp; } struct ExecuteLiquidationCallParams { uint256 reservesCount; uint256 debtToCover; address collateralAsset; address debtAsset; address user; bool receiveAToken; address priceOracle; uint8 userEModeCategory; address priceOracleSentinel; } struct ExecuteSupplyParams { address asset; uint256 amount; address onBehalfOf; uint16 referralCode; } struct ExecuteBorrowParams { address asset; address user; address onBehalfOf; uint256 amount; InterestRateMode interestRateMode; uint16 referralCode; bool releaseUnderlying; uint256 maxStableRateBorrowSizePercent; uint256 reservesCount; address oracle; uint8 userEModeCategory; address priceOracleSentinel; } struct ExecuteRepayParams { address asset; uint256 amount; InterestRateMode interestRateMode; address onBehalfOf; bool useATokens; } struct ExecuteWithdrawParams { address asset; uint256 amount; address to; uint256 reservesCount; address oracle; uint8 userEModeCategory; } struct ExecuteSetUserEModeParams { uint256 reservesCount; address oracle; uint8 categoryId; } struct FinalizeTransferParams { address asset; address from; address to; uint256 amount; uint256 balanceFromBefore; uint256 balanceToBefore; uint256 reservesCount; address oracle; uint8 fromEModeCategory; } struct FlashloanParams { address receiverAddress; address[] assets; uint256[] amounts; uint256[] interestRateModes; address onBehalfOf; bytes params; uint16 referralCode; uint256 flashLoanPremiumToProtocol; uint256 flashLoanPremiumTotal; uint256 maxStableRateBorrowSizePercent; uint256 reservesCount; address addressesProvider; uint8 userEModeCategory; bool isAuthorizedFlashBorrower; } struct FlashloanSimpleParams { address receiverAddress; address asset; uint256 amount; bytes params; uint16 referralCode; uint256 flashLoanPremiumToProtocol; uint256 flashLoanPremiumTotal; } struct FlashLoanRepaymentParams { uint256 amount; uint256 totalPremium; uint256 flashLoanPremiumToProtocol; address asset; address receiverAddress; uint16 referralCode; } struct CalculateUserAccountDataParams { UserConfigurationMap userConfig; uint256 reservesCount; address user; address oracle; uint8 userEModeCategory; } struct ValidateBorrowParams { ReserveCache reserveCache; UserConfigurationMap userConfig; address asset; address userAddress; uint256 amount; InterestRateMode interestRateMode; uint256 maxStableLoanPercent; uint256 reservesCount; address oracle; uint8 userEModeCategory; address priceOracleSentinel; bool isolationModeActive; address isolationModeCollateralAddress; uint256 isolationModeDebtCeiling; } struct ValidateLiquidationCallParams { ReserveCache debtReserveCache; uint256 totalDebt; uint256 healthFactor; address priceOracleSentinel; } struct CalculateInterestRatesParams { uint256 unbacked; uint256 liquidityAdded; uint256 liquidityTaken; uint256 totalStableDebt; uint256 totalVariableDebt; uint256 averageStableBorrowRate; uint256 reserveFactor; address reserve; address aToken; } struct InitReserveParams { address asset; address aTokenAddress; address stableDebtAddress; address variableDebtAddress; address interestRateStrategyAddress; uint16 reservesCount; uint16 maxNumberReserves; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {UserConfiguration} from '../libraries/configuration/UserConfiguration.sol'; import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol'; import {ReserveLogic} from '../libraries/logic/ReserveLogic.sol'; import {DataTypes} from '../libraries/types/DataTypes.sol'; /** * @title PoolStorage * @author Aave * @notice Contract used as storage of the Pool contract. * @dev It defines the storage layout of the Pool contract. */ contract PoolStorage { using ReserveLogic for DataTypes.ReserveData; using ReserveConfiguration for DataTypes.ReserveConfigurationMap; using UserConfiguration for DataTypes.UserConfigurationMap; // Map of reserves and their data (underlyingAssetOfReserve => reserveData) mapping(address => DataTypes.ReserveData) internal _reserves; // Map of users address and their configuration data (userAddress => userConfiguration) mapping(address => DataTypes.UserConfigurationMap) internal _usersConfig; // List of reserves as a map (reserveId => reserve). // It is structured as a mapping for gas savings reasons, using the reserve id as index mapping(uint256 => address) internal _reservesList; // List of eMode categories as a map (eModeCategoryId => eModeCategory). // It is structured as a mapping for gas savings reasons, using the eModeCategoryId as index mapping(uint8 => DataTypes.EModeCategory) internal _eModeCategories; // Map of users address and their eMode category (userAddress => eModeCategoryId) mapping(address => uint8) internal _usersEModeCategory; // Fee of the protocol bridge, expressed in bps uint256 internal _bridgeProtocolFee; // Total FlashLoan Premium, expressed in bps uint128 internal _flashLoanPremiumTotal; // FlashLoan premium paid to protocol treasury, expressed in bps uint128 internal _flashLoanPremiumToProtocol; // Available liquidity that can be borrowed at once at stable rate, expressed in bps uint64 internal _maxStableRateBorrowSizePercent; // Maximum number of active reserves there have been in the protocol. It is the upper bound of the reserves list uint16 internal _reservesCount; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.10; import {Context} from '../../../dependencies/openzeppelin/contracts/Context.sol'; import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol'; import {IERC20Detailed} from '../../../dependencies/openzeppelin/contracts/IERC20Detailed.sol'; import {SafeCast} from '../../../dependencies/openzeppelin/contracts/SafeCast.sol'; import {WadRayMath} from '../../libraries/math/WadRayMath.sol'; import {Errors} from '../../libraries/helpers/Errors.sol'; import {IAaveIncentivesController} from '../../../interfaces/IAaveIncentivesController.sol'; import {IPoolAddressesProvider} from '../../../interfaces/IPoolAddressesProvider.sol'; import {IPool} from '../../../interfaces/IPool.sol'; import {IACLManager} from '../../../interfaces/IACLManager.sol'; /** * @title IncentivizedERC20 * @author Aave, inspired by the Openzeppelin ERC20 implementation * @notice Basic ERC20 implementation */ abstract contract IncentivizedERC20 is Context, IERC20Detailed { using WadRayMath for uint256; using SafeCast for uint256; /** * @dev Only pool admin can call functions marked by this modifier. */ modifier onlyPoolAdmin() { IACLManager aclManager = IACLManager(_addressesProvider.getACLManager()); require(aclManager.isPoolAdmin(msg.sender), Errors.CALLER_NOT_POOL_ADMIN); _; } /** * @dev Only pool can call functions marked by this modifier. */ modifier onlyPool() { require(_msgSender() == address(POOL), Errors.CALLER_MUST_BE_POOL); _; } /** * @dev UserState - additionalData is a flexible field. * ATokens and VariableDebtTokens use this field store the index of the * user's last supply/withdrawal/borrow/repayment. StableDebtTokens use * this field to store the user's stable rate. */ struct UserState { uint128 balance; uint128 additionalData; } // Map of users address and their state data (userAddress => userStateData) mapping(address => UserState) internal _userState; // Map of allowances (delegator => delegatee => allowanceAmount) mapping(address => mapping(address => uint256)) private _allowances; uint256 internal _totalSupply; string private _name; string private _symbol; uint8 private _decimals; IAaveIncentivesController internal _incentivesController; IPoolAddressesProvider internal immutable _addressesProvider; IPool public immutable POOL; /** * @dev Constructor. * @param pool The reference to the main Pool contract * @param name The name of the token * @param symbol The symbol of the token * @param decimals The number of decimals of the token */ constructor(IPool pool, string memory name, string memory symbol, uint8 decimals) { _addressesProvider = pool.ADDRESSES_PROVIDER(); _name = name; _symbol = symbol; _decimals = decimals; POOL = pool; } /// @inheritdoc IERC20Detailed function name() public view override returns (string memory) { return _name; } /// @inheritdoc IERC20Detailed function symbol() external view override returns (string memory) { return _symbol; } /// @inheritdoc IERC20Detailed function decimals() external view override returns (uint8) { return _decimals; } /// @inheritdoc IERC20 function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /// @inheritdoc IERC20 function balanceOf(address account) public view virtual override returns (uint256) { return _userState[account].balance; } /** * @notice Returns the address of the Incentives Controller contract * @return The address of the Incentives Controller */ function getIncentivesController() external view virtual returns (IAaveIncentivesController) { return _incentivesController; } /** * @notice Sets a new Incentives Controller * @param controller the new Incentives controller */ function setIncentivesController(IAaveIncentivesController controller) external onlyPoolAdmin { _incentivesController = controller; } /// @inheritdoc IERC20 function transfer(address recipient, uint256 amount) external virtual override returns (bool) { uint128 castAmount = amount.toUint128(); _transfer(_msgSender(), recipient, castAmount); return true; } /// @inheritdoc IERC20 function allowance( address owner, address spender ) external view virtual override returns (uint256) { return _allowances[owner][spender]; } /// @inheritdoc IERC20 function approve(address spender, uint256 amount) external virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /// @inheritdoc IERC20 function transferFrom( address sender, address recipient, uint256 amount ) external virtual override returns (bool) { uint128 castAmount = amount.toUint128(); _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - castAmount); _transfer(sender, recipient, castAmount); return true; } /** * @notice Increases the allowance of spender to spend _msgSender() tokens * @param spender The user allowed to spend on behalf of _msgSender() * @param addedValue The amount being added to the allowance * @return `true` */ function increaseAllowance(address spender, uint256 addedValue) external virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @notice Decreases the allowance of spender to spend _msgSender() tokens * @param spender The user allowed to spend on behalf of _msgSender() * @param subtractedValue The amount being subtracted to the allowance * @return `true` */ function decreaseAllowance( address spender, uint256 subtractedValue ) external virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] - subtractedValue); return true; } /** * @notice Transfers tokens between two users and apply incentives if defined. * @param sender The source address * @param recipient The destination address * @param amount The amount getting transferred */ function _transfer(address sender, address recipient, uint128 amount) internal virtual { uint128 oldSenderBalance = _userState[sender].balance; _userState[sender].balance = oldSenderBalance - amount; uint128 oldRecipientBalance = _userState[recipient].balance; _userState[recipient].balance = oldRecipientBalance + amount; IAaveIncentivesController incentivesControllerLocal = _incentivesController; if (address(incentivesControllerLocal) != address(0)) { uint256 currentTotalSupply = _totalSupply; incentivesControllerLocal.handleAction(sender, currentTotalSupply, oldSenderBalance); if (sender != recipient) { incentivesControllerLocal.handleAction(recipient, currentTotalSupply, oldRecipientBalance); } } } /** * @notice Approve `spender` to use `amount` of `owner`s balance * @param owner The address owning the tokens * @param spender The address approved for spending * @param amount The amount of tokens to approve spending of */ function _approve(address owner, address spender, uint256 amount) internal virtual { _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @notice Update the name of the token * @param newName The new name for the token */ function _setName(string memory newName) internal { _name = newName; } /** * @notice Update the symbol for the token * @param newSymbol The new symbol for the token */ function _setSymbol(string memory newSymbol) internal { _symbol = newSymbol; } /** * @notice Update the number of decimals for the token * @param newDecimals The new number of decimals for the token */ function _setDecimals(uint8 newDecimals) internal { _decimals = newDecimals; } }
{ "optimizer": { "enabled": true, "runs": 100000 }, "evmVersion": "berlin", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": { "@aave/core-v3/contracts/protocol/libraries/logic/BorrowLogic.sol": { "BorrowLogic": "0xb68b3d2682025a8d6b324d66fb9d112488e0c0d3" }, "@aave/core-v3/contracts/protocol/libraries/logic/BridgeLogic.sol": { "BridgeLogic": "0x2d3719818abe48668630ee1f6d8f7c83dc7cdb51" }, "@aave/core-v3/contracts/protocol/libraries/logic/EModeLogic.sol": { "EModeLogic": "0x309d2169bb582943da74d3aeba9ce7cdfb8e85fd" }, "@aave/core-v3/contracts/protocol/libraries/logic/FlashLoanLogic.sol": { "FlashLoanLogic": "0xd76bd7610bf82f8769122ddbdd7ebf18e7885386" }, "@aave/core-v3/contracts/protocol/libraries/logic/LiquidationLogic.sol": { "LiquidationLogic": "0xb217a6d00f42b161c8c697fc3c9f32cbf06dea55" }, "@aave/core-v3/contracts/protocol/libraries/logic/PoolLogic.sol": { "PoolLogic": "0x24f0cc8484f29c218d15992068572daac4e9a71c" }, "@aave/core-v3/contracts/protocol/libraries/logic/SupplyLogic.sol": { "SupplyLogic": "0x47c9e2f16024b85d49d833d1b75a1ad42efce0da" } } }
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000007d41c82384019cc7014d338e18d9d6a33ddea5ba
-----Decoded View---------------
Arg [0] : provider (address): 0x7D41c82384019cc7014d338E18d9D6a33dDEA5BA
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000007d41c82384019cc7014d338e18d9d6a33ddea5ba
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.