Address Contract Verified
Address
0x0aDc69041a2B086f8772aCcE2A754f410F211bed
Balance
0 ETH
Nonce
1
Code Size
18132 bytes
Creator
0xa31d555b...84CF at tx 0xcdbbd61c...b4967f
Indexed Transactions
0
Contract Bytecode
18132 bytes
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Verified Source Code Full Match
Compiler: v0.8.19+commit.7dd6d404
EVM: paris
Optimization: Yes (200 runs)
IRewardable.sol 31 lines
// SPDX-License-Identifier: BlueOak-1.0.0
pragma solidity 0.8.19;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/**
* @title IRewardable
* @notice A simple interface mixin to support claiming of rewards.
*/
interface IRewardable {
/// Emitted whenever a reward token balance is claimed
/// @param erc20 The ERC20 of the reward token
/// @param amount {qTok}
event RewardsClaimed(IERC20 indexed erc20, uint256 amount);
/// Claim rewards earned by holding a balance of the ERC20 token
/// Must emit `RewardsClaimed` for each token rewards are claimed for
/// @custom:interaction
function claimRewards() external;
}
/**
* @title IRewardableComponent
* @notice A simple interface mixin to support claiming of rewards.
*/
interface IRewardableComponent is IRewardable {
/// Claim rewards for a single ERC20
/// Must emit `RewardsClaimed` for each token rewards are claimed for
/// @custom:interaction
function claimRewardsSingle(IERC20 erc20) external;
}
Address.sol 222 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @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
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
IPool.sol 737 lines
// 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;
}
IERC20.sol 82 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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);
/**
* @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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from,
address to,
uint256 amount
) external returns (bool);
}
SafeCast.sol 1135 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toUint248(uint256 value) internal pure returns (uint248) {
require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toUint240(uint256 value) internal pure returns (uint240) {
require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toUint232(uint256 value) internal pure returns (uint232) {
require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
return uint232(value);
}
/**
* @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
*
* _Available since v4.2._
*/
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 uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toUint216(uint256 value) internal pure returns (uint216) {
require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toUint208(uint256 value) internal pure returns (uint208) {
require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toUint200(uint256 value) internal pure returns (uint200) {
require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toUint192(uint256 value) internal pure returns (uint192) {
require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toUint184(uint256 value) internal pure returns (uint184) {
require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toUint176(uint256 value) internal pure returns (uint176) {
require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toUint168(uint256 value) internal pure returns (uint168) {
require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toUint160(uint256 value) internal pure returns (uint160) {
require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toUint152(uint256 value) internal pure returns (uint152) {
require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toUint144(uint256 value) internal pure returns (uint144) {
require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toUint136(uint256 value) internal pure returns (uint136) {
require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
return uint136(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
*
* _Available since v2.5._
*/
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 uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toUint120(uint256 value) internal pure returns (uint120) {
require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toUint112(uint256 value) internal pure returns (uint112) {
require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toUint104(uint256 value) internal pure returns (uint104) {
require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
return uint104(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
*
* _Available since v4.2._
*/
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 uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toUint88(uint256 value) internal pure returns (uint88) {
require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toUint80(uint256 value) internal pure returns (uint80) {
require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toUint72(uint256 value) internal pure returns (uint72) {
require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
return uint72(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
*
* _Available since v2.5._
*/
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 uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toUint56(uint256 value) internal pure returns (uint56) {
require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toUint48(uint256 value) internal pure returns (uint48) {
require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toUint40(uint256 value) internal pure returns (uint40) {
require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
return uint40(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
*
* _Available since v2.5._
*/
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 uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toUint24(uint256 value) internal pure returns (uint24) {
require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
return uint24(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
*
* _Available since v2.5._
*/
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
*
* _Available since v2.5._
*/
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.
*
* _Available since v3.0._
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toInt248(int256 value) internal pure returns (int248) {
require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits");
return int248(value);
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toInt240(int256 value) internal pure returns (int240) {
require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits");
return int240(value);
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toInt232(int256 value) internal pure returns (int232) {
require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits");
return int232(value);
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.7._
*/
function toInt224(int256 value) internal pure returns (int224) {
require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits");
return int224(value);
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toInt216(int256 value) internal pure returns (int216) {
require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits");
return int216(value);
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toInt208(int256 value) internal pure returns (int208) {
require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits");
return int208(value);
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toInt200(int256 value) internal pure returns (int200) {
require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits");
return int200(value);
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toInt192(int256 value) internal pure returns (int192) {
require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits");
return int192(value);
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toInt184(int256 value) internal pure returns (int184) {
require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits");
return int184(value);
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toInt176(int256 value) internal pure returns (int176) {
require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits");
return int176(value);
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toInt168(int256 value) internal pure returns (int168) {
require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits");
return int168(value);
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toInt160(int256 value) internal pure returns (int160) {
require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits");
return int160(value);
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toInt152(int256 value) internal pure returns (int152) {
require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits");
return int152(value);
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toInt144(int256 value) internal pure returns (int144) {
require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits");
return int144(value);
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toInt136(int256 value) internal pure returns (int136) {
require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits");
return int136(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 int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toInt120(int256 value) internal pure returns (int120) {
require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits");
return int120(value);
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toInt112(int256 value) internal pure returns (int112) {
require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits");
return int112(value);
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toInt104(int256 value) internal pure returns (int104) {
require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits");
return int104(value);
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.7._
*/
function toInt96(int256 value) internal pure returns (int96) {
require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits");
return int96(value);
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toInt88(int256 value) internal pure returns (int88) {
require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits");
return int88(value);
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toInt80(int256 value) internal pure returns (int80) {
require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits");
return int80(value);
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toInt72(int256 value) internal pure returns (int72) {
require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits");
return int72(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 int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toInt56(int256 value) internal pure returns (int56) {
require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits");
return int56(value);
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toInt48(int256 value) internal pure returns (int48) {
require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits");
return int48(value);
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toInt40(int256 value) internal pure returns (int40) {
require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits");
return int40(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 int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toInt24(int256 value) internal pure returns (int24) {
require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits");
return int24(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.
*
* _Available since v3.0._
*/
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);
}
}
ERC20.sol 237 lines
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/* solhint-disable */
/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
/* //////////////////////////////////////////////////////////////
EVENTS
////////////////////////////////////////////////////////////// */
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
/* //////////////////////////////////////////////////////////////
METADATA STORAGE
////////////////////////////////////////////////////////////// */
string public name;
string public symbol;
uint8 public decimals;
/* //////////////////////////////////////////////////////////////
ERC20 STORAGE
////////////////////////////////////////////////////////////// */
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
/* //////////////////////////////////////////////////////////////
EIP-2612 STORAGE
////////////////////////////////////////////////////////////// */
uint256 internal immutable INITIAL_CHAIN_ID;
bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;
mapping(address => uint256) public nonces;
/* //////////////////////////////////////////////////////////////
CONSTRUCTOR
////////////////////////////////////////////////////////////// */
constructor(
string memory _name,
string memory _symbol,
uint8 _decimals
) {
name = _name;
symbol = _symbol;
decimals = _decimals;
INITIAL_CHAIN_ID = block.chainid;
INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
}
/* //////////////////////////////////////////////////////////////
ERC20 LOGIC
////////////////////////////////////////////////////////////// */
function approve(address spender, uint256 amount) public virtual returns (bool) {
allowance[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transfer(address to, uint256 amount) public virtual returns (bool) {
_beforeTokenTransfer(msg.sender, to, amount);
balanceOf[msg.sender] -= amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(msg.sender, to, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual returns (bool) {
_beforeTokenTransfer(from, to, amount);
uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.
if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;
balanceOf[from] -= amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(from, to, amount);
return true;
}
/* //////////////////////////////////////////////////////////////
EIP-2612 LOGIC
////////////////////////////////////////////////////////////// */
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual {
require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");
// Unchecked because the only math done is incrementing
// the owner's nonce which cannot realistically overflow.
unchecked {
address recoveredAddress = ecrecover(
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR(),
keccak256(
abi.encode(
keccak256(
"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
),
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
),
v,
r,
s
);
require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");
allowance[recoveredAddress][spender] = value;
}
emit Approval(owner, spender, value);
}
function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
return
block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
}
function computeDomainSeparator() internal view virtual returns (bytes32) {
return
keccak256(
abi.encode(
keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
),
keccak256(bytes(name)),
keccak256("1"),
block.chainid,
address(this)
)
);
}
/* //////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
////////////////////////////////////////////////////////////// */
function _mint(address to, uint256 amount) internal virtual {
_beforeTokenTransfer(address(0), to, amount);
totalSupply += amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(address(0), to, amount);
}
function _burn(address from, uint256 amount) internal virtual {
_beforeTokenTransfer(from, address(0), amount);
balanceOf[from] -= amount;
// Cannot underflow because a user's balance
// will never be larger than the total supply.
unchecked {
totalSupply -= amount;
}
emit Transfer(from, address(0), amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
/* solhint-enable */
SafeERC20.sol 116 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
IScaledBalanceToken.sol 72 lines
// 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);
}
StaticATokenV3LM.sol 753 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
/* solhint-disable */
import { IPool } from "@aave/core-v3/contracts/interfaces/IPool.sol";
import { DataTypes, ReserveConfiguration } from "@aave/core-v3/contracts/protocol/libraries/configuration/ReserveConfiguration.sol";
import { IScaledBalanceToken } from "@aave/core-v3/contracts/interfaces/IScaledBalanceToken.sol";
import { IRewardsController } from "@aave/periphery-v3/contracts/rewards/interfaces/IRewardsController.sol";
import { WadRayMath } from "@aave/core-v3/contracts/protocol/libraries/math/WadRayMath.sol";
import { MathUtils } from "@aave/core-v3/contracts/protocol/libraries/math/MathUtils.sol";
import { IStaticATokenV3LM } from "./interfaces/IStaticATokenV3LM.sol";
import { IAToken } from "./interfaces/IAToken.sol";
import { IInitializableStaticATokenLM } from "./interfaces/IInitializableStaticATokenLM.sol";
import { StaticATokenErrors } from "./StaticATokenErrors.sol";
import { RayMathExplicitRounding, Rounding } from "./RayMathExplicitRounding.sol";
import { IERC4626 } from "./interfaces/IERC4626.sol";
import { ERC20 } from "./ERC20.sol";
import { IERC20Metadata, IERC20 } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import { IERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol";
import { Initializable } from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { IRewardable } from "../../../../interfaces/IRewardable.sol";
/**
* @title StaticATokenLM
* @notice Wrapper smart contract that allows to deposit tokens on the Aave protocol and receive
* a token which balance doesn't increase automatically, but uses an ever-increasing exchange rate.
* It supports claiming liquidity mining rewards from the Aave system.
* @author BGD Labs
* From https://github.com/bgd-labs/static-a-token-v3/blob/b9f6f86b6d89c7407eeb0013af248d3c5f4d09c8/src/StaticATokenLM.sol
* Original source was formally verified
* https://github.com/bgd-labs/static-a-token-v3/blob/b9f6f86b6d89c7407eeb0013af248d3c5f4d09c8/audits/Formal_Verification_Report_staticAToken.pdf
* @dev This contract has been further modified by Reserve to include the claimRewards() function. This is the only change.
*/
contract StaticATokenV3LM is
Initializable,
ERC20("STATIC__aToken_IMPL", "STATIC__aToken_IMPL", 18),
IStaticATokenV3LM,
IERC4626,
IRewardable
{
using SafeERC20 for IERC20;
using SafeCast for uint256;
using WadRayMath for uint256;
using RayMathExplicitRounding for uint256;
bytes32 public constant METADEPOSIT_TYPEHASH =
keccak256(
"Deposit(address depositor,address receiver,uint256 assets,uint16 referralCode,bool depositToAave,uint256 nonce,uint256 deadline,PermitParams permit)"
);
bytes32 public constant METAWITHDRAWAL_TYPEHASH =
keccak256(
"Withdraw(address owner,address receiver,uint256 shares,uint256 assets,bool withdrawFromAave,uint256 nonce,uint256 deadline)"
);
uint256 public constant STATIC__ATOKEN_LM_REVISION = 2;
IPool public immutable POOL;
IRewardsController public immutable INCENTIVES_CONTROLLER;
IERC20 internal _aToken;
address internal _aTokenUnderlying;
address[] internal _rewardTokens;
mapping(address => RewardIndexCache) internal _startIndex;
mapping(address => mapping(address => UserRewardsData)) internal _userRewardsData;
constructor(IPool pool, IRewardsController rewardsController) {
POOL = pool;
INCENTIVES_CONTROLLER = rewardsController;
}
///@inheritdoc IInitializableStaticATokenLM
function initialize(
address newAToken,
string calldata staticATokenName,
string calldata staticATokenSymbol
) external initializer {
require(IAToken(newAToken).POOL() == address(POOL));
_aToken = IERC20(newAToken);
name = staticATokenName;
symbol = staticATokenSymbol;
decimals = IERC20Metadata(newAToken).decimals();
_aTokenUnderlying = IAToken(newAToken).UNDERLYING_ASSET_ADDRESS();
IERC20(_aTokenUnderlying).safeApprove(address(POOL), type(uint256).max);
if (INCENTIVES_CONTROLLER != IRewardsController(address(0))) {
refreshRewardTokens();
}
emit InitializedStaticATokenLM(newAToken, staticATokenName, staticATokenSymbol);
}
///@inheritdoc IStaticATokenV3LM
function refreshRewardTokens() public override {
address[] memory rewards = INCENTIVES_CONTROLLER.getRewardsByAsset(address(_aToken));
for (uint256 i = 0; i < rewards.length; i++) {
_registerRewardToken(rewards[i]);
}
}
///@inheritdoc IStaticATokenV3LM
function isRegisteredRewardToken(address reward) public view override returns (bool) {
return _startIndex[reward].isRegistered;
}
///@inheritdoc IStaticATokenV3LM
function deposit(
uint256 assets,
address receiver,
uint16 referralCode,
bool depositToAave
) external returns (uint256) {
(uint256 shares, ) = _deposit(msg.sender, receiver, 0, assets, referralCode, depositToAave);
return shares;
}
///@inheritdoc IStaticATokenV3LM
function metaDeposit(
address depositor,
address receiver,
uint256 assets,
uint16 referralCode,
bool depositToAave,
uint256 deadline,
PermitParams calldata permit,
SignatureParams calldata sigParams
) external returns (uint256) {
require(depositor != address(0), StaticATokenErrors.INVALID_DEPOSITOR);
//solium-disable-next-line
require(deadline >= block.timestamp, StaticATokenErrors.INVALID_EXPIRATION);
uint256 nonce = nonces[depositor];
// Unchecked because the only math done is incrementing
// the owner's nonce which cannot realistically overflow.
unchecked {
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR(),
keccak256(
abi.encode(
METADEPOSIT_TYPEHASH,
depositor,
receiver,
assets,
referralCode,
depositToAave,
nonce,
deadline,
permit
)
)
)
);
nonces[depositor] = nonce + 1;
require(
depositor == ecrecover(digest, sigParams.v, sigParams.r, sigParams.s),
StaticATokenErrors.INVALID_SIGNATURE
);
}
// assume if deadline 0 no permit was supplied
if (permit.deadline != 0) {
IERC20Permit(depositToAave ? address(_aTokenUnderlying) : address(_aToken)).permit(
depositor,
address(this),
permit.value,
permit.deadline,
permit.v,
permit.r,
permit.s
);
}
(uint256 shares, ) = _deposit(depositor, receiver, 0, assets, referralCode, depositToAave);
return shares;
}
///@inheritdoc IStaticATokenV3LM
function metaWithdraw(
address owner,
address receiver,
uint256 shares,
uint256 assets,
bool withdrawFromAave,
uint256 deadline,
SignatureParams calldata sigParams
) external returns (uint256, uint256) {
require(owner != address(0), StaticATokenErrors.INVALID_OWNER);
//solium-disable-next-line
require(deadline >= block.timestamp, StaticATokenErrors.INVALID_EXPIRATION);
uint256 nonce = nonces[owner];
// Unchecked because the only math done is incrementing
// the owner's nonce which cannot realistically overflow.
unchecked {
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR(),
keccak256(
abi.encode(
METAWITHDRAWAL_TYPEHASH,
owner,
receiver,
shares,
assets,
withdrawFromAave,
nonce,
deadline
)
)
)
);
nonces[owner] = nonce + 1;
require(
owner == ecrecover(digest, sigParams.v, sigParams.r, sigParams.s),
StaticATokenErrors.INVALID_SIGNATURE
);
}
return _withdraw(owner, receiver, shares, assets, withdrawFromAave);
}
///@inheritdoc IERC4626
function previewRedeem(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Rounding.DOWN);
}
///@inheritdoc IERC4626
function previewMint(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Rounding.UP);
}
///@inheritdoc IERC4626
function previewWithdraw(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Rounding.UP);
}
///@inheritdoc IERC4626
function previewDeposit(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Rounding.DOWN);
}
///@inheritdoc IStaticATokenV3LM
function rate() public view virtual returns (uint256) {
return POOL.getReserveNormalizedIncome(_aTokenUnderlying);
}
///@inheritdoc IStaticATokenV3LM
function collectAndUpdateRewards(address reward) public returns (uint256) {
if (reward == address(0)) {
return 0;
}
address[] memory assets = new address[](1);
assets[0] = address(_aToken);
return INCENTIVES_CONTROLLER.claimRewards(assets, type(uint256).max, address(this), reward);
}
///@inheritdoc IStaticATokenV3LM
function claimRewardsOnBehalf(
address onBehalfOf,
address receiver,
address[] memory rewards
) external {
require(
msg.sender == onBehalfOf || msg.sender == INCENTIVES_CONTROLLER.getClaimer(onBehalfOf),
StaticATokenErrors.INVALID_CLAIMER
);
_claimRewardsOnBehalf(onBehalfOf, receiver, rewards);
}
///@inheritdoc IStaticATokenV3LM
function claimRewards(address receiver, address[] memory rewards) external {
_claimRewardsOnBehalf(msg.sender, receiver, rewards);
}
/// @dev Added by Reserve
function claimRewards() external {
address[] memory rewardsList = INCENTIVES_CONTROLLER.getRewardsByAsset(address(_aToken));
for (uint256 i = 0; i < rewardsList.length; i++) {
address currentReward = rewardsList[i];
uint256 prevBalance = IERC20(currentReward).balanceOf(msg.sender);
address[] memory rewardsToCollect = new address[](1);
rewardsToCollect[0] = currentReward;
_claimRewardsOnBehalf(msg.sender, msg.sender, rewardsToCollect);
emit RewardsClaimed(
IERC20(currentReward),
IERC20(currentReward).balanceOf(msg.sender) - prevBalance
);
}
}
///@inheritdoc IStaticATokenV3LM
function claimRewardsToSelf(address[] memory rewards) external {
_claimRewardsOnBehalf(msg.sender, msg.sender, rewards);
}
///@inheritdoc IStaticATokenV3LM
function getCurrentRewardsIndex(address reward) public view returns (uint256) {
if (address(reward) == address(0)) {
return 0;
}
(, uint256 nextIndex) = INCENTIVES_CONTROLLER.getAssetIndex(address(_aToken), reward);
return nextIndex;
}
///@inheritdoc IStaticATokenV3LM
function getTotalClaimableRewards(address reward) external view returns (uint256) {
if (reward == address(0)) {
return 0;
}
address[] memory assets = new address[](1);
assets[0] = address(_aToken);
uint256 freshRewards = INCENTIVES_CONTROLLER.getUserRewards(assets, address(this), reward);
return IERC20(reward).balanceOf(address(this)) + freshRewards;
}
///@inheritdoc IStaticATokenV3LM
function getClaimableRewards(address user, address reward) external view returns (uint256) {
return _getClaimableRewards(user, reward, balanceOf[user], getCurrentRewardsIndex(reward));
}
///@inheritdoc IStaticATokenV3LM
function getUnclaimedRewards(address user, address reward) external view returns (uint256) {
return _userRewardsData[user][reward].unclaimedRewards;
}
///@inheritdoc IERC4626
function asset() external view returns (address) {
return address(_aTokenUnderlying);
}
///@inheritdoc IStaticATokenV3LM
function aToken() external view returns (IERC20) {
return _aToken;
}
///@inheritdoc IStaticATokenV3LM
function rewardTokens() external view returns (address[] memory) {
return _rewardTokens;
}
///@inheritdoc IERC4626
function totalAssets() external view returns (uint256) {
return _aToken.balanceOf(address(this));
}
///@inheritdoc IERC4626
function convertToShares(uint256 assets) external view returns (uint256) {
return _convertToShares(assets, Rounding.DOWN);
}
///@inheritdoc IERC4626
function convertToAssets(uint256 shares) external view returns (uint256) {
return _convertToAssets(shares, Rounding.DOWN);
}
///@inheritdoc IERC4626
function maxMint(address) public view virtual returns (uint256) {
uint256 assets = maxDeposit(address(0));
return _convertToShares(assets, Rounding.DOWN);
}
///@inheritdoc IERC4626
function maxWithdraw(address owner) public view virtual returns (uint256) {
uint256 shares = maxRedeem(owner);
return _convertToAssets(shares, Rounding.DOWN);
}
///@inheritdoc IERC4626
function maxRedeem(address owner) public view virtual returns (uint256) {
address cachedATokenUnderlying = _aTokenUnderlying;
DataTypes.ReserveData memory reserveData = POOL.getReserveData(cachedATokenUnderlying);
// if paused or inactive users cannot withdraw underlying
if (
!ReserveConfiguration.getActive(reserveData.configuration) ||
ReserveConfiguration.getPaused(reserveData.configuration)
) {
return 0;
}
// otherwise users can withdraw up to the available amount
uint256 underlyingTokenBalanceInShares = _convertToShares(
IERC20(cachedATokenUnderlying).balanceOf(reserveData.aTokenAddress),
Rounding.DOWN
);
uint256 cachedUserBalance = balanceOf[owner];
return
underlyingTokenBalanceInShares >= cachedUserBalance
? cachedUserBalance
: underlyingTokenBalanceInShares;
}
///@inheritdoc IERC4626
function maxDeposit(address) public view virtual returns (uint256) {
DataTypes.ReserveData memory reserveData = POOL.getReserveData(_aTokenUnderlying);
// if inactive, paused or frozen users cannot deposit underlying
if (
!ReserveConfiguration.getActive(reserveData.configuration) ||
ReserveConfiguration.getPaused(reserveData.configuration) ||
ReserveConfiguration.getFrozen(reserveData.configuration)
) {
return 0;
}
uint256 supplyCap = ReserveConfiguration.getSupplyCap(reserveData.configuration) *
(10**ReserveConfiguration.getDecimals(reserveData.configuration));
// if no supply cap deposit is unlimited
if (supplyCap == 0) return type(uint256).max;
// return remaining supply cap margin
uint256 currentSupply = (IAToken(reserveData.aTokenAddress).scaledTotalSupply() +
reserveData.accruedToTreasury)
.rayMulRoundUp(_getNormalizedIncome(reserveData));
return currentSupply > supplyCap ? 0 : supplyCap - currentSupply;
}
///@inheritdoc IERC4626
function deposit(uint256 assets, address receiver) external virtual returns (uint256) {
(uint256 shares, ) = _deposit(msg.sender, receiver, 0, assets, 0, true);
return shares;
}
///@inheritdoc IERC4626
function mint(uint256 shares, address receiver) external virtual returns (uint256) {
(, uint256 assets) = _deposit(msg.sender, receiver, shares, 0, 0, true);
return assets;
}
///@inheritdoc IERC4626
function withdraw(
uint256 assets,
address receiver,
address owner
) external virtual returns (uint256) {
(uint256 shares, ) = _withdraw(owner, receiver, 0, assets, true);
return shares;
}
///@inheritdoc IERC4626
function redeem(
uint256 shares,
address receiver,
address owner
) external virtual returns (uint256) {
(, uint256 assets) = _withdraw(owner, receiver, shares, 0, true);
return assets;
}
///@inheritdoc IStaticATokenV3LM
function redeem(
uint256 shares,
address receiver,
address owner,
bool withdrawFromAave
) external virtual returns (uint256, uint256) {
return _withdraw(owner, receiver, shares, 0, withdrawFromAave);
}
function _deposit(
address depositor,
address receiver,
uint256 _shares,
uint256 _assets,
uint16 referralCode,
bool depositToAave
) internal returns (uint256, uint256) {
require(receiver != address(0), StaticATokenErrors.INVALID_RECIPIENT);
require(_shares == 0 || _assets == 0, StaticATokenErrors.ONLY_ONE_AMOUNT_FORMAT_ALLOWED);
uint256 assets = _assets;
uint256 shares = _shares;
if (shares > 0) {
if (depositToAave) {
require(shares <= maxMint(receiver), "ERC4626: mint more than max");
}
assets = previewMint(shares);
} else {
if (depositToAave) {
require(assets <= maxDeposit(receiver), "ERC4626: deposit more than max");
}
shares = previewDeposit(assets);
}
require(shares != 0, StaticATokenErrors.INVALID_ZERO_AMOUNT);
if (depositToAave) {
address cachedATokenUnderlying = _aTokenUnderlying;
IERC20(cachedATokenUnderlying).safeTransferFrom(depositor, address(this), assets);
POOL.deposit(cachedATokenUnderlying, assets, address(this), referralCode);
} else {
_aToken.safeTransferFrom(depositor, address(this), assets);
}
_mint(receiver, shares);
emit Deposit(depositor, receiver, assets, shares);
return (shares, assets);
}
function _withdraw(
address owner,
address receiver,
uint256 _shares,
uint256 _assets,
bool withdrawFromAave
) internal returns (uint256, uint256) {
require(receiver != address(0), StaticATokenErrors.INVALID_RECIPIENT);
require(_shares == 0 || _assets == 0, StaticATokenErrors.ONLY_ONE_AMOUNT_FORMAT_ALLOWED);
require(_shares != _assets, StaticATokenErrors.INVALID_ZERO_AMOUNT);
uint256 assets = _assets;
uint256 shares = _shares;
if (shares > 0) {
if (withdrawFromAave) {
require(shares <= maxRedeem(owner), "ERC4626: redeem more than max");
}
assets = previewRedeem(shares);
} else {
if (withdrawFromAave) {
require(assets <= maxWithdraw(owner), "ERC4626: withdraw more than max");
}
shares = previewWithdraw(assets);
}
if (msg.sender != owner) {
uint256 allowed = allowance[owner][msg.sender]; // Saves gas for limited approvals.
if (allowed != type(uint256).max) allowance[owner][msg.sender] = allowed - shares;
}
_burn(owner, shares);
emit Withdraw(msg.sender, receiver, owner, assets, shares);
if (withdrawFromAave) {
POOL.withdraw(_aTokenUnderlying, assets, receiver);
} else {
_aToken.safeTransfer(receiver, assets);
}
return (shares, assets);
}
/**
* @notice Updates rewards for senders and receiver in a transfer (not updating rewards for address(0))
* @param from The address of the sender of tokens
* @param to The address of the receiver of tokens
*/
function _beforeTokenTransfer(
address from,
address to,
uint256
) internal override {
for (uint256 i = 0; i < _rewardTokens.length; i++) {
address rewardToken = address(_rewardTokens[i]);
uint256 rewardsIndex = getCurrentRewardsIndex(rewardToken);
if (from != address(0)) {
_updateUser(from, rewardsIndex, rewardToken);
}
if (to != address(0) && from != to) {
_updateUser(to, rewardsIndex, rewardToken);
}
}
}
/**
* @notice Adding the pending rewards to the unclaimed for specific user and updating user index
* @param user The address of the user to update
* @param currentRewardsIndex The current rewardIndex
* @param rewardToken The address of the reward token
*/
function _updateUser(
address user,
uint256 currentRewardsIndex,
address rewardToken
) internal {
uint256 balance = balanceOf[user];
if (balance > 0) {
_userRewardsData[user][rewardToken].unclaimedRewards = _getClaimableRewards(
user,
rewardToken,
balance,
currentRewardsIndex
).toUint128();
}
_userRewardsData[user][rewardToken].rewardsIndexOnLastInteraction = currentRewardsIndex
.toUint128();
}
/**
* @notice Compute the pending in WAD. Pending is the amount to add (not yet unclaimed) rewards in WAD.
* @param balance The balance of the user
* @param rewardsIndexOnLastInteraction The index which was on the last interaction of the user
* @param currentRewardsIndex The current rewards index in the system
* @param assetUnit One unit of asset (10**decimals)
* @return The amount of pending rewards in WAD
*/
function _getPendingRewards(
uint256 balance,
uint256 rewardsIndexOnLastInteraction,
uint256 currentRewardsIndex,
uint256 assetUnit
) internal pure returns (uint256) {
if (balance == 0) {
return 0;
}
return (balance * (currentRewardsIndex - rewardsIndexOnLastInteraction)) / assetUnit;
}
/**
* @notice Compute the claimable rewards for a user
* @param user The address of the user
* @param reward The address of the reward
* @param balance The balance of the user in WAD
* @param currentRewardsIndex The current rewards index
* @return The total rewards that can be claimed by the user (if `fresh` flag true, after updating rewards)
*/
function _getClaimableRewards(
address user,
address reward,
uint256 balance,
uint256 currentRewardsIndex
) internal view returns (uint256) {
RewardIndexCache memory rewardsIndexCache = _startIndex[reward];
require(rewardsIndexCache.isRegistered == true, StaticATokenErrors.REWARD_NOT_INITIALIZED);
UserRewardsData memory currentUserRewardsData = _userRewardsData[user][reward];
uint256 assetUnit = 10**decimals;
return
currentUserRewardsData.unclaimedRewards +
_getPendingRewards(
balance,
currentUserRewardsData.rewardsIndexOnLastInteraction == 0
? rewardsIndexCache.lastUpdatedIndex
: currentUserRewardsData.rewardsIndexOnLastInteraction,
currentRewardsIndex,
assetUnit
);
}
/**
* @notice Claim rewards on behalf of a user and send them to a receiver
* @param onBehalfOf The address to claim on behalf of
* @param rewards The addresses of the rewards
* @param receiver The address to receive the rewards
*/
function _claimRewardsOnBehalf(
address onBehalfOf,
address receiver,
address[] memory rewards
) internal {
for (uint256 i = 0; i < rewards.length; i++) {
if (address(rewards[i]) == address(0)) {
continue;
}
uint256 currentRewardsIndex = getCurrentRewardsIndex(rewards[i]);
uint256 balance = balanceOf[onBehalfOf];
uint256 userReward = _getClaimableRewards(
onBehalfOf,
rewards[i],
balance,
currentRewardsIndex
);
uint256 totalRewardTokenBalance = IERC20(rewards[i]).balanceOf(address(this));
uint256 unclaimedReward = 0;
if (userReward > totalRewardTokenBalance) {
totalRewardTokenBalance += collectAndUpdateRewards(address(rewards[i]));
}
if (userReward > totalRewardTokenBalance) {
unclaimedReward = userReward - totalRewardTokenBalance;
userReward = totalRewardTokenBalance;
}
if (userReward > 0) {
_userRewardsData[onBehalfOf][rewards[i]].unclaimedRewards = unclaimedReward
.toUint128();
_userRewardsData[onBehalfOf][rewards[i]]
.rewardsIndexOnLastInteraction = currentRewardsIndex.toUint128();
IERC20(rewards[i]).safeTransfer(receiver, userReward);
}
}
}
function _convertToShares(uint256 assets, Rounding rounding) internal view returns (uint256) {
if (rounding == Rounding.UP) return assets.rayDivRoundUp(rate());
return assets.rayDivRoundDown(rate());
}
function _convertToAssets(uint256 shares, Rounding rounding) internal view returns (uint256) {
if (rounding == Rounding.UP) return shares.rayMulRoundUp(rate());
return shares.rayMulRoundDown(rate());
}
/**
* @notice Initializes a new rewardToken
* @param reward The reward token to be registered
*/
function _registerRewardToken(address reward) internal {
if (isRegisteredRewardToken(reward)) return;
uint256 startIndex = getCurrentRewardsIndex(reward);
_rewardTokens.push(reward);
_startIndex[reward] = RewardIndexCache(true, startIndex.toUint240());
emit RewardTokenRegistered(reward, startIndex);
}
/**
* @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 memory 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
);
}
}
}
/* solhint-enable */
IPoolAddressesProvider.sol 227 lines
// 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;
}
Errors.sol 100 lines
// 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
}
MathUtils.sol 99 lines
// 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);
}
}
WadRayMath.sol 126 lines
// 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)
}
}
}
}
DataTypes.sol 265 lines
// 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;
}
}
StaticATokenErrors.sol 14 lines
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.10;
library StaticATokenErrors {
string public constant INVALID_OWNER = "1";
string public constant INVALID_EXPIRATION = "2";
string public constant INVALID_SIGNATURE = "3";
string public constant INVALID_DEPOSITOR = "4";
string public constant INVALID_RECIPIENT = "5";
string public constant INVALID_CLAIMER = "6";
string public constant ONLY_ONE_AMOUNT_FORMAT_ALLOWED = "7";
string public constant INVALID_ZERO_AMOUNT = "8";
string public constant REWARD_NOT_INITIALIZED = "9";
}
IAToken.sol 22 lines
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.10;
/* solhint-disable */
import { IAaveIncentivesController } from "@aave/core-v3/contracts/interfaces/IAaveIncentivesController.sol";
interface IAToken {
function POOL() external view returns (address);
function getIncentivesController() external view returns (address);
function UNDERLYING_ASSET_ADDRESS() external view returns (address);
/**
* @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);
}
/* solhint-enable */
IERC4626.sol 246 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (interfaces/IERC4626.sol)
pragma solidity ^0.8.10;
/* solhint-disable max-line-length */
/**
* @dev Interface of the ERC4626 "Tokenized Vault Standard", as defined in
* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
*
* _Available since v4.7._
*/
//slither-disable-next-line name-reused
interface IERC4626 {
event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(
address indexed sender,
address indexed receiver,
address indexed owner,
uint256 assets,
uint256 shares
);
/**
* @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
*
* - MUST be an ERC-20 token contract.
* - MUST NOT revert.
*/
function asset() external view returns (address assetTokenAddress);
/**
* @dev Returns the total amount of the underlying asset that is “managed” by Vault.
*
* - SHOULD include any compounding that occurs from yield.
* - MUST be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT revert.
*/
function totalAssets() external view returns (uint256 totalManagedAssets);
/**
* @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToShares(uint256 assets) external view returns (uint256 shares);
/**
* @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert unless due to integer overflow caused by an unreasonably large input.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToAssets(uint256 shares) external view returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
* through a deposit call.
* While deposit of aToken is not affected by aave pool configrations, deposit of the aTokenUnderlying will need to deposit to aave
* so it is affected by current aave pool configuration.
* Reference: https://github.com/aave/aave-v3-core/blob/29ff9b9f89af7cd8255231bc5faf26c3ce0fb7ce/contracts/protocol/libraries/logic/ValidationLogic.sol#L57
* - MUST return a limited value if receiver is subject to some deposit limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
* - MUST NOT revert unless due to integer overflow caused by an unreasonably large input.
*/
function maxDeposit(address receiver) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
* call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
* in the same transaction.
* - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
* deposit would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewDeposit(uint256 assets) external view returns (uint256 shares);
/**
* @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* deposit execution, and are accounted for during deposit.
* - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
* - MUST return a limited value if receiver is subject to some mint limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
* - MUST NOT revert.
*/
function maxMint(address receiver) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
* in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
* same transaction.
* - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
* would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by minting.
*/
function previewMint(uint256 shares) external view returns (uint256 assets);
/**
* @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
* execution, and are accounted for during mint.
* - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function mint(uint256 shares, address receiver) external returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
* Vault, through a withdraw call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxWithdraw(address owner) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
* call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
* called
* in the same transaction.
* - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
* the withdrawal would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewWithdraw(uint256 assets) external view returns (uint256 shares);
/**
* @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* withdraw execution, and are accounted for during withdraw.
* - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function withdraw(
uint256 assets,
address receiver,
address owner
) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
* through a redeem call to the aToken underlying.
* While redeem of aToken is not affected by aave pool configrations, redeeming of the aTokenUnderlying will need to redeem from aave
* so it is affected by current aave pool configuration.
* Reference: https://github.com/aave/aave-v3-core/blob/29ff9b9f89af7cd8255231bc5faf26c3ce0fb7ce/contracts/protocol/libraries/logic/ValidationLogic.sol#L87
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxRedeem(address owner) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
* in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
* same transaction.
* - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
* redemption would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by redeeming.
*/
function previewRedeem(uint256 shares) external view returns (uint256 assets);
/**
* @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* redeem execution, and are accounted for during redeem.
* - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function redeem(
uint256 shares,
address receiver,
address owner
) external returns (uint256 assets);
}
/* solhint-enable max-line-length */
IAaveIncentivesController.sol 19 lines
// 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;
}
AddressUpgradeable.sol 195 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 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 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
Initializable.sol 138 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
* initialization step. This is essential to configure modules that are added through upgrades and that require
* initialization.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
}
IERC20Metadata.sol 28 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
RewardsDataTypes.sol 54 lines
// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.10;
import {ITransferStrategyBase} from '../interfaces/ITransferStrategyBase.sol';
import {IEACAggregatorProxy} from '../../misc/interfaces/IEACAggregatorProxy.sol';
library RewardsDataTypes {
struct RewardsConfigInput {
uint88 emissionPerSecond;
uint256 totalSupply;
uint32 distributionEnd;
address asset;
address reward;
ITransferStrategyBase transferStrategy;
IEACAggregatorProxy rewardOracle;
}
struct UserAssetBalance {
address asset;
uint256 userBalance;
uint256 totalSupply;
}
struct UserData {
// Liquidity index of the reward distribution for the user
uint104 index;
// Amount of accrued rewards for the user since last user index update
uint128 accrued;
}
struct RewardData {
// Liquidity index of the reward distribution
uint104 index;
// Amount of reward tokens distributed per second
uint88 emissionPerSecond;
// Timestamp of the last reward index update
uint32 lastUpdateTimestamp;
// The end of the distribution of rewards (in seconds)
uint32 distributionEnd;
// Map of user addresses and their rewards data (userAddress => userData)
mapping(address => UserData) usersData;
}
struct AssetData {
// Map of reward token addresses and their data (rewardTokenAddress => rewardData)
mapping(address => RewardData) rewards;
// List of reward token addresses for the asset
mapping(uint128 => address) availableRewards;
// Count of reward tokens for the asset
uint128 availableRewardsCount;
// Number of decimals of the asset
uint8 decimals;
}
}
RayMathExplicitRounding.sol 46 lines
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.10;
/* solhint-disable max-line-length */
enum Rounding {
UP,
DOWN
}
/**
* Simplified version of RayMath that instead of half-up rounding does explicit rounding in a specified direction.
* This is needed to have a 4626 complient implementation, that always predictable rounds in favor of the vault / static a token.
*/
library RayMathExplicitRounding {
uint256 internal constant RAY = 1e27;
uint256 internal constant WAD_RAY_RATIO = 1e9;
function rayMulRoundDown(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
return (a * b) / RAY;
}
function rayMulRoundUp(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
return ((a * b) + RAY - 1) / RAY;
}
function rayDivRoundDown(uint256 a, uint256 b) internal pure returns (uint256) {
return (a * RAY) / b;
}
function rayDivRoundUp(uint256 a, uint256 b) internal pure returns (uint256) {
return ((a * RAY) + b - 1) / b;
}
function rayToWadRoundDown(uint256 a) internal pure returns (uint256) {
return a / WAD_RAY_RATIO;
}
}
/* solhint-enable max-line-length */
IEACAggregatorProxy.sol 19 lines
// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.10;
interface IEACAggregatorProxy {
function decimals() external view returns (uint8);
function latestAnswer() external view returns (int256);
function latestTimestamp() external view returns (uint256);
function latestRound() external view returns (uint256);
function getAnswer(uint256 roundId) external view returns (int256);
function getTimestamp(uint256 roundId) external view returns (uint256);
event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 timestamp);
event NewRound(uint256 indexed roundId, address indexed startedBy);
}
draft-IERC20Permit.sol 60 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
IRewardsController.sol 203 lines
// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.10;
import {IRewardsDistributor} from './IRewardsDistributor.sol';
import {ITransferStrategyBase} from './ITransferStrategyBase.sol';
import {IEACAggregatorProxy} from '../../misc/interfaces/IEACAggregatorProxy.sol';
import {RewardsDataTypes} from '../libraries/RewardsDataTypes.sol';
/**
* @title IRewardsController
* @author Aave
* @notice Defines the basic interface for a Rewards Controller.
*/
interface IRewardsController is IRewardsDistributor {
/**
* @dev Emitted when a new address is whitelisted as claimer of rewards on behalf of a user
* @param user The address of the user
* @param claimer The address of the claimer
*/
event ClaimerSet(address indexed user, address indexed claimer);
/**
* @dev Emitted when rewards are claimed
* @param user The address of the user rewards has been claimed on behalf of
* @param reward The address of the token reward is claimed
* @param to The address of the receiver of the rewards
* @param claimer The address of the claimer
* @param amount The amount of rewards claimed
*/
event RewardsClaimed(
address indexed user,
address indexed reward,
address indexed to,
address claimer,
uint256 amount
);
/**
* @dev Emitted when a transfer strategy is installed for the reward distribution
* @param reward The address of the token reward
* @param transferStrategy The address of TransferStrategy contract
*/
event TransferStrategyInstalled(address indexed reward, address indexed transferStrategy);
/**
* @dev Emitted when the reward oracle is updated
* @param reward The address of the token reward
* @param rewardOracle The address of oracle
*/
event RewardOracleUpdated(address indexed reward, address indexed rewardOracle);
/**
* @dev Whitelists an address to claim the rewards on behalf of another address
* @param user The address of the user
* @param claimer The address of the claimer
*/
function setClaimer(address user, address claimer) external;
/**
* @dev Sets a TransferStrategy logic contract that determines the logic of the rewards transfer
* @param reward The address of the reward token
* @param transferStrategy The address of the TransferStrategy logic contract
*/
function setTransferStrategy(address reward, ITransferStrategyBase transferStrategy) external;
/**
* @dev Sets an Aave Oracle contract to enforce rewards with a source of value.
* @notice At the moment of reward configuration, the Incentives Controller performs
* a check to see if the reward asset oracle is compatible with IEACAggregator proxy.
* This check is enforced for integrators to be able to show incentives at
* the current Aave UI without the need to setup an external price registry
* @param reward The address of the reward to set the price aggregator
* @param rewardOracle The address of price aggregator that follows IEACAggregatorProxy interface
*/
function setRewardOracle(address reward, IEACAggregatorProxy rewardOracle) external;
/**
* @dev Get the price aggregator oracle address
* @param reward The address of the reward
* @return The price oracle of the reward
*/
function getRewardOracle(address reward) external view returns (address);
/**
* @dev Returns the whitelisted claimer for a certain address (0x0 if not set)
* @param user The address of the user
* @return The claimer address
*/
function getClaimer(address user) external view returns (address);
/**
* @dev Returns the Transfer Strategy implementation contract address being used for a reward address
* @param reward The address of the reward
* @return The address of the TransferStrategy contract
*/
function getTransferStrategy(address reward) external view returns (address);
/**
* @dev Configure assets to incentivize with an emission of rewards per second until the end of distribution.
* @param config The assets configuration input, the list of structs contains the following fields:
* uint104 emissionPerSecond: The emission per second following rewards unit decimals.
* uint256 totalSupply: The total supply of the asset to incentivize
* uint40 distributionEnd: The end of the distribution of the incentives for an asset
* address asset: The asset address to incentivize
* address reward: The reward token address
* ITransferStrategy transferStrategy: The TransferStrategy address with the install hook and claim logic.
* IEACAggregatorProxy rewardOracle: The Price Oracle of a reward to visualize the incentives at the UI Frontend.
* Must follow Chainlink Aggregator IEACAggregatorProxy interface to be compatible.
*/
function configureAssets(RewardsDataTypes.RewardsConfigInput[] memory config) external;
/**
* @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;
/**
* @dev Claims reward for a user to the desired address, on all the assets of the pool, accumulating the pending rewards
* @param assets List of assets to check eligible distributions before claiming rewards
* @param amount The amount of rewards to claim
* @param to The address that will be receiving the rewards
* @param reward The address of the reward token
* @return The amount of rewards claimed
**/
function claimRewards(
address[] calldata assets,
uint256 amount,
address to,
address reward
) external returns (uint256);
/**
* @dev Claims reward for a user on behalf, on all the assets of the pool, accumulating the pending rewards. The
* caller must be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager
* @param assets The list of assets to check eligible distributions before claiming rewards
* @param amount The amount of rewards to claim
* @param user The address to check and claim rewards
* @param to The address that will be receiving the rewards
* @param reward The address of the reward token
* @return The amount of rewards claimed
**/
function claimRewardsOnBehalf(
address[] calldata assets,
uint256 amount,
address user,
address to,
address reward
) external returns (uint256);
/**
* @dev Claims reward for msg.sender, on all the assets of the pool, accumulating the pending rewards
* @param assets The list of assets to check eligible distributions before claiming rewards
* @param amount The amount of rewards to claim
* @param reward The address of the reward token
* @return The amount of rewards claimed
**/
function claimRewardsToSelf(
address[] calldata assets,
uint256 amount,
address reward
) external returns (uint256);
/**
* @dev Claims all rewards for a user to the desired address, on all the assets of the pool, accumulating the pending rewards
* @param assets The list of assets to check eligible distributions before claiming rewards
* @param to The address that will be receiving the rewards
* @return rewardsList List of addresses of the reward tokens
* @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardList"
**/
function claimAllRewards(
address[] calldata assets,
address to
) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts);
/**
* @dev Claims all rewards for a user on behalf, on all the assets of the pool, accumulating the pending rewards. The caller must
* be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager
* @param assets The list of assets to check eligible distributions before claiming rewards
* @param user The address to check and claim rewards
* @param to The address that will be receiving the rewards
* @return rewardsList List of addresses of the reward tokens
* @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardsList"
**/
function claimAllRewardsOnBehalf(
address[] calldata assets,
address user,
address to
) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts);
/**
* @dev Claims all reward for msg.sender, on all the assets of the pool, accumulating the pending rewards
* @param assets The list of assets to check eligible distributions before claiming rewards
* @return rewardsList List of addresses of the reward tokens
* @return claimedAmounts List that contains the claimed amount per reward, following same order as "rewardsList"
**/
function claimAllRewardsToSelf(
address[] calldata assets
) external returns (address[] memory rewardsList, uint256[] memory claimedAmounts);
}
IRewardsDistributor.sol 177 lines
// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.10;
/**
* @title IRewardsDistributor
* @author Aave
* @notice Defines the basic interface for a Rewards Distributor.
*/
interface IRewardsDistributor {
/**
* @dev Emitted when the configuration of the rewards of an asset is updated.
* @param asset The address of the incentivized asset
* @param reward The address of the reward token
* @param oldEmission The old emissions per second value of the reward distribution
* @param newEmission The new emissions per second value of the reward distribution
* @param oldDistributionEnd The old end timestamp of the reward distribution
* @param newDistributionEnd The new end timestamp of the reward distribution
* @param assetIndex The index of the asset distribution
*/
event AssetConfigUpdated(
address indexed asset,
address indexed reward,
uint256 oldEmission,
uint256 newEmission,
uint256 oldDistributionEnd,
uint256 newDistributionEnd,
uint256 assetIndex
);
/**
* @dev Emitted when rewards of an asset are accrued on behalf of a user.
* @param asset The address of the incentivized asset
* @param reward The address of the reward token
* @param user The address of the user that rewards are accrued on behalf of
* @param assetIndex The index of the asset distribution
* @param userIndex The index of the asset distribution on behalf of the user
* @param rewardsAccrued The amount of rewards accrued
*/
event Accrued(
address indexed asset,
address indexed reward,
address indexed user,
uint256 assetIndex,
uint256 userIndex,
uint256 rewardsAccrued
);
/**
* @dev Sets the end date for the distribution
* @param asset The asset to incentivize
* @param reward The reward token that incentives the asset
* @param newDistributionEnd The end date of the incentivization, in unix time format
**/
function setDistributionEnd(address asset, address reward, uint32 newDistributionEnd) external;
/**
* @dev Sets the emission per second of a set of reward distributions
* @param asset The asset is being incentivized
* @param rewards List of reward addresses are being distributed
* @param newEmissionsPerSecond List of new reward emissions per second
*/
function setEmissionPerSecond(
address asset,
address[] calldata rewards,
uint88[] calldata newEmissionsPerSecond
) external;
/**
* @dev Gets the end date for the distribution
* @param asset The incentivized asset
* @param reward The reward token of the incentivized asset
* @return The timestamp with the end of the distribution, in unix time format
**/
function getDistributionEnd(address asset, address reward) external view returns (uint256);
/**
* @dev Returns the index of a user on a reward distribution
* @param user Address of the user
* @param asset The incentivized asset
* @param reward The reward token of the incentivized asset
* @return The current user asset index, not including new distributions
**/
function getUserAssetIndex(
address user,
address asset,
address reward
) external view returns (uint256);
/**
* @dev Returns the configuration of the distribution reward for a certain asset
* @param asset The incentivized asset
* @param reward The reward token of the incentivized asset
* @return The index of the asset distribution
* @return The emission per second of the reward distribution
* @return The timestamp of the last update of the index
* @return The timestamp of the distribution end
**/
function getRewardsData(
address asset,
address reward
) external view returns (uint256, uint256, uint256, uint256);
/**
* @dev Calculates the next value of an specific distribution index, with validations.
* @param asset The incentivized asset
* @param reward The reward token of the incentivized asset
* @return The old index of the asset distribution
* @return The new index of the asset distribution
**/
function getAssetIndex(address asset, address reward) external view returns (uint256, uint256);
/**
* @dev Returns the list of available reward token addresses of an incentivized asset
* @param asset The incentivized asset
* @return List of rewards addresses of the input asset
**/
function getRewardsByAsset(address asset) external view returns (address[] memory);
/**
* @dev Returns the list of available reward addresses
* @return List of rewards supported in this contract
**/
function getRewardsList() external view returns (address[] memory);
/**
* @dev Returns the accrued rewards balance of a user, not including virtually accrued rewards since last distribution.
* @param user The address of the user
* @param reward The address of the reward token
* @return Unclaimed rewards, not including new distributions
**/
function getUserAccruedRewards(address user, address reward) external view returns (uint256);
/**
* @dev Returns a single rewards balance of a user, including virtually accrued and unrealized claimable rewards.
* @param assets List of incentivized assets to check eligible distributions
* @param user The address of the user
* @param reward The address of the reward token
* @return The rewards amount
**/
function getUserRewards(
address[] calldata assets,
address user,
address reward
) external view returns (uint256);
/**
* @dev Returns a list all rewards of a user, including already accrued and unrealized claimable rewards
* @param assets List of incentivized assets to check eligible distributions
* @param user The address of the user
* @return The list of reward addresses
* @return The list of unclaimed amount of rewards
**/
function getAllUserRewards(
address[] calldata assets,
address user
) external view returns (address[] memory, uint256[] memory);
/**
* @dev Returns the decimals of an asset to calculate the distribution delta
* @param asset The address to retrieve decimals
* @return The decimals of an underlying asset
*/
function getAssetDecimals(address asset) external view returns (uint8);
/**
* @dev Returns the address of the emission manager
* @return The address of the EmissionManager
*/
function EMISSION_MANAGER() external view returns (address);
/**
* @dev Returns the address of the emission manager.
* Deprecated: This getter is maintained for compatibility purposes. Use the `EMISSION_MANAGER()` function instead.
* @return The address of the EmissionManager
*/
function getEmissionManager() external view returns (address);
}
IStaticATokenV3LM.sol 220 lines
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.10;
/* solhint-disable max-line-length */
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IPool } from "@aave/core-v3/contracts/interfaces/IPool.sol";
import { IAaveIncentivesController } from "@aave/core-v3/contracts/interfaces/IAaveIncentivesController.sol";
import { IInitializableStaticATokenLM } from "./IInitializableStaticATokenLM.sol";
interface IStaticATokenV3LM is IInitializableStaticATokenLM {
struct SignatureParams {
uint8 v;
bytes32 r;
bytes32 s;
}
struct PermitParams {
address owner;
address spender;
uint256 value;
uint256 deadline;
uint8 v;
bytes32 r;
bytes32 s;
}
struct UserRewardsData {
uint128 rewardsIndexOnLastInteraction; // (in RAYs)
uint128 unclaimedRewards; // (in RAYs)
}
struct RewardIndexCache {
bool isRegistered;
uint248 lastUpdatedIndex;
}
event RewardTokenRegistered(address indexed reward, uint256 startIndex);
/**
* @notice Burns `amount` of static aToken, with receiver receiving the corresponding amount of `ASSET`
* @param shares The amount to withdraw, in static balance of StaticAToken
* @param receiver The address that will receive the amount of `ASSET` withdrawn from the Aave protocol
* @param withdrawFromAave bool
* - `true` for the receiver to get underlying tokens (e.g. USDC)
* - `false` for the receiver to get aTokens (e.g. aUSDC)
* @return amountToBurn: StaticATokens burnt, static balance
* @return amountToWithdraw: underlying/aToken send to `receiver`, dynamic balance
**/
function redeem(
uint256 shares,
address receiver,
address owner,
bool withdrawFromAave
) external returns (uint256, uint256);
/**
* @notice Deposits `ASSET` in the Aave protocol and mints static aTokens to msg.sender
* @param assets The amount of underlying `ASSET` to deposit (e.g. deposit of 100 USDC)
* @param receiver The address that will receive the static 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
* @param depositToAave bool
* - `true` if the msg.sender comes with underlying tokens (e.g. USDC)
* - `false` if the msg.sender comes already with aTokens (e.g. aUSDC)
* @return uint256 The amount of StaticAToken minted, static balance
**/
function deposit(
uint256 assets,
address receiver,
uint16 referralCode,
bool depositToAave
) external returns (uint256);
/**
* @notice Allows to deposit on Aave via meta-transaction
* https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md
* @param depositor Address from which the funds to deposit are going to be pulled
* @param receiver Address that will receive the staticATokens, in the average case, same as the `depositor`
* @param assets The amount to deposit
* @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 depositToAave bool
* - `true` if the msg.sender comes with underlying tokens (e.g. USDC)
* - `false` if the msg.sender comes already with aTokens (e.g. aUSDC)
* @param deadline The deadline timestamp, type(uint256).max for max deadline
* @param sigParams Signature params: v,r,s
* @return uint256 The amount of StaticAToken minted, static balance
*/
function metaDeposit(
address depositor,
address receiver,
uint256 assets,
uint16 referralCode,
bool depositToAave,
uint256 deadline,
PermitParams calldata permit,
SignatureParams calldata sigParams
) external returns (uint256);
/**
* @notice Allows to withdraw from Aave via meta-transaction
* https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md
* @param owner Address owning the staticATokens
* @param receiver Address that will receive the underlying withdrawn from Aave
* @param shares The amount of staticAToken to withdraw. If > 0, `assets` needs to be 0
* @param assets The amount of underlying/aToken to withdraw. If > 0, `shares` needs to be 0
* @param withdrawFromAave bool
* - `true` for the receiver to get underlying tokens (e.g. USDC)
* - `false` for the receiver to get aTokens (e.g. aUSDC)
* @param deadline The deadline timestamp, type(uint256).max for max deadline
* @param sigParams Signature params: v,r,s
* @return amountToBurn: StaticATokens burnt, static balance
* @return amountToWithdraw: underlying/aToken send to `receiver`, dynamic balance
*/
function metaWithdraw(
address owner,
address receiver,
uint256 shares,
uint256 assets,
bool withdrawFromAave,
uint256 deadline,
SignatureParams calldata sigParams
) external returns (uint256, uint256);
/**
* @notice Returns the Aave liquidity index of the underlying aToken, denominated rate here
* as it can be considered as an ever-increasing exchange rate
* @return The liquidity index
**/
function rate() external view returns (uint256);
/**
* @notice Claims rewards from `INCENTIVES_CONTROLLER` and updates internal accounting of rewards.
* @param reward The reward to claim
* @return uint256 Amount collected
*/
function collectAndUpdateRewards(address reward) external returns (uint256);
/**
* @notice Claim rewards on behalf of a user and send them to a receiver
* @dev Only callable by if sender is onBehalfOf or sender is approved claimer
* @param onBehalfOf The address to claim on behalf of
* @param receiver The address to receive the rewards
* @param rewards The rewards to claim
*/
function claimRewardsOnBehalf(
address onBehalfOf,
address receiver,
address[] memory rewards
) external;
/**
* @notice Claim rewards and send them to a receiver
* @param receiver The address to receive the rewards
* @param rewards The rewards to claim
*/
function claimRewards(address receiver, address[] memory rewards) external;
/**
* @notice Claim rewards
* @param rewards The rewards to claim
*/
function claimRewardsToSelf(address[] memory rewards) external;
/**
* @notice Get the total claimable rewards of the contract.
* @param reward The reward to claim
* @return uint256 The current balance + pending rewards from the `_incentivesController`
*/
function getTotalClaimableRewards(address reward) external view returns (uint256);
/**
* @notice Get the total claimable rewards for a user in WAD
* @param user The address of the user
* @param reward The reward to claim
* @return uint256 The claimable amount of rewards in WAD
*/
function getClaimableRewards(address user, address reward) external view returns (uint256);
/**
* @notice The unclaimed rewards for a user in WAD
* @param user The address of the user
* @param reward The reward to claim
* @return uint256 The unclaimed amount of rewards in WAD
*/
function getUnclaimedRewards(address user, address reward) external view returns (uint256);
/**
* @notice The underlying asset reward index in RAY
* @param reward The reward to claim
* @return uint256 The underlying asset reward index in RAY
*/
function getCurrentRewardsIndex(address reward) external view returns (uint256);
/**
* @notice The aToken used inside the 4626 vault.
* @return IERC20 The aToken IERC20.
*/
function aToken() external view returns (IERC20);
/**
* @notice The IERC20s that are currently rewarded to addresses of the vault via LM on incentivescontroller.
* @return IERC20 The IERC20s of the rewards.
*/
function rewardTokens() external view returns (address[] memory);
/**
* @notice Fetches all rewardTokens from the incentivecontroller and registers the missing ones.
*/
function refreshRewardTokens() external;
/**
* @notice Checks if the passed token is a registered reward.
* @return bool signaling if token is a registered reward.
*/
function isRegisteredRewardToken(address reward) external view returns (bool);
}
/* solhint-enable max-line-length */
ITransferStrategyBase.sol 38 lines
// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.10;
interface ITransferStrategyBase {
event EmergencyWithdrawal(
address indexed caller,
address indexed token,
address indexed to,
uint256 amount
);
/**
* @dev Perform custom transfer logic via delegate call from source contract to a TransferStrategy implementation
* @param to Account to transfer rewards
* @param reward Address of the reward token
* @param amount Amount to transfer to the "to" address parameter
* @return Returns true bool if transfer logic succeeds
*/
function performTransfer(address to, address reward, uint256 amount) external returns (bool);
/**
* @return Returns the address of the Incentives Controller
*/
function getIncentivesController() external view returns (address);
/**
* @return Returns the address of the Rewards admin
*/
function getRewardsAdmin() external view returns (address);
/**
* @dev Perform an emergency token withdrawal only callable by the Rewards admin
* @param token Address of the token to withdraw funds from this contract
* @param to Address of the recipient of the withdrawal
* @param amount Amount of the withdrawal
*/
function emergencyWithdrawal(address token, address to, uint256 amount) external;
}
ReserveConfiguration.sol 611 lines
// 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
);
}
}
IInitializableStaticATokenLM.sol 41 lines
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.8.10;
/* solhint-disable max-line-length */
import { IPool } from "@aave/core-v3/contracts/interfaces/IPool.sol";
import { IAaveIncentivesController } from "@aave/core-v3/contracts/interfaces/IAaveIncentivesController.sol";
/**
* @title IInitializableStaticATokenLM
* @notice Interface for the initialize function on StaticATokenLM
* @author Aave
**/
interface IInitializableStaticATokenLM {
/**
* @dev Emitted when a StaticATokenLM is initialized
* @param aToken The address of the underlying aToken (aWETH)
* @param staticATokenName The name of the Static aToken
* @param staticATokenSymbol The symbol of the Static aToken
* @dev Used to be `Initialized` but changed to avoid duplicate events
**/
event InitializedStaticATokenLM(
address indexed aToken,
string staticATokenName,
string staticATokenSymbol
);
/**
* @dev Initializes the StaticATokenLM
* @param aToken The address of the underlying aToken (aWETH)
* @param staticATokenName The name of the Static aToken
* @param staticATokenSymbol The symbol of the Static aToken
*/
function initialize(
address aToken,
string calldata staticATokenName,
string calldata staticATokenSymbol
) external;
}
/* solhint-enable max-line-length */
Read Contract
DOMAIN_SEPARATOR 0x3644e515 → bytes32
INCENTIVES_CONTROLLER 0x10d0ab22 → address
METADEPOSIT_TYPEHASH 0x63210537 → bytes32
METAWITHDRAWAL_TYPEHASH 0x8d948415 → bytes32
POOL 0x7535d246 → address
STATIC__ATOKEN_LM_REVISION 0xfa714610 → uint256
aToken 0xa0c1f15e → address
allowance 0xdd62ed3e → uint256
asset 0x38d52e0f → address
balanceOf 0x70a08231 → uint256
convertToAssets 0x07a2d13a → uint256
convertToShares 0xc6e6f592 → uint256
decimals 0x313ce567 → uint8
getClaimableRewards 0xf56f4f0f → uint256
getCurrentRewardsIndex 0xde9cee98 → uint256
getTotalClaimableRewards 0x60d8fdd8 → uint256
getUnclaimedRewards 0x86894b29 → uint256
isRegisteredRewardToken 0x6fe0b5a5 → bool
maxDeposit 0x402d267d → uint256
maxMint 0xc63d75b6 → uint256
maxRedeem 0xd905777e → uint256
maxWithdraw 0xce96cb77 → uint256
name 0x06fdde03 → string
nonces 0x7ecebe00 → uint256
previewDeposit 0xef8b30f7 → uint256
previewMint 0xb3d7f6b9 → uint256
previewRedeem 0x4cdad506 → uint256
previewWithdraw 0x0a28a477 → uint256
rate 0x2c4e722e → uint256
rewardTokens 0xc2b18aa0 → address[]
symbol 0x95d89b41 → string
totalAssets 0x01e1d114 → uint256
totalSupply 0x18160ddd → uint256
Write Contract 19 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
claimRewards 0x2026ffa3
address receiver
address[] rewards
claimRewards 0x372500ab
No parameters
claimRewardsOnBehalf 0xee0fc6d3
address onBehalfOf
address receiver
address[] rewards
claimRewardsToSelf 0x8daaf5aa
address[] rewards
collectAndUpdateRewards 0xbcd17848
address reward
returns: uint256
deposit 0x273cd895
uint256 assets
address receiver
uint16 referralCode
bool depositToAave
returns: uint256
deposit 0x6e553f65
uint256 assets
address receiver
returns: uint256
initialize 0x90657147
address newAToken
string staticATokenName
string staticATokenSymbol
metaDeposit 0xa6d4a0d4
address depositor
address receiver
uint256 assets
uint16 referralCode
bool depositToAave
uint256 deadline
tuple permit
tuple sigParams
returns: uint256
metaWithdraw 0xea6eee51
address owner
address receiver
uint256 shares
uint256 assets
bool withdrawFromAave
uint256 deadline
tuple sigParams
returns: uint256, uint256
mint 0x94bf804d
uint256 shares
address receiver
returns: uint256
permit 0xd505accf
address owner
address spender
uint256 value
uint256 deadline
uint8 v
bytes32 r
bytes32 s
redeem 0xba087652
uint256 shares
address receiver
address owner
returns: uint256
redeem 0xbe4a0a14
uint256 shares
address receiver
address owner
bool withdrawFromAave
returns: uint256, uint256
refreshRewardTokens 0x2f813b0d
No parameters
transfer 0xa9059cbb
address to
uint256 amount
returns: bool
transferFrom 0x23b872dd
address from
address to
uint256 amount
returns: bool
withdraw 0xb460af94
uint256 assets
address receiver
address owner
returns: uint256
Recent Transactions
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