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| Transaction Hash |
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| Initialize | 88666468 | 976 days ago | IN | 0 ETH | 0.000384254473 |
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Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin-4/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin-4/contracts/utils/math/Math.sol";
import "../../utils/UniswapV3Utils.sol";
import "../../interfaces/aave/IDataProvider.sol";
import "../../interfaces/aave/ILendingPool.sol";
import "../../interfaces/exactly/IExactlyMarket.sol";
import "../../interfaces/exactly/IExactlyRewardsController.sol";
import "../Common/StratFeeManagerInitializable.sol";
contract StrategyExactly is StratFeeManagerInitializable {
using SafeERC20 for IERC20;
struct InitialVariables {
address eToken;
uint256 aaveTargetLtv;
uint256 aaveMaxLtv;
uint256 exactlyTargetLtv;
uint256 exactlyMaxLtv;
uint256 minLeverage;
address lendingPool;
address dataProvider;
address rewardsController;
uint8 eMode;
}
// Tokens used
address public want;
address public output;
address public native;
address public eToken;
// Third party contracts
address public dataProvider;
address public lendingPool;
address public rewardsController;
// Routes
bytes public outputToNativePath;
bytes public outputToWantPath;
// Aave variables
address[] public assets;
uint256[] public modes;
// Exactly variables
IExactlyRewardsController.MarketOperation[] public marketOps;
address[] public rewards;
bool public harvestOnDeposit;
uint256 public lastHarvest;
// LTV
uint256 public aaveTargetLtv;
uint256 public exactlyTargetLtv;
uint256 public aaveMaxLtv;
uint256 public exactlyMaxLtv;
uint256 public minLeverage;
/**
* @dev Events that the contract emits
*/
event StratHarvest(address indexed harvester, uint256 wantHarvested, uint256 tvl);
event Deposit(uint256 tvl);
event Withdraw(uint256 tvl);
event ChargedFees(uint256 callFees, uint256 beefyFees, uint256 strategistFees);
event StratRebalance(uint256 aaveLtv, uint256 exactlyLtv);
function initialize(
InitialVariables calldata _initialVariables,
address[] calldata _outputToNativeRoute,
uint24[] calldata _outputToNativeFees,
address[] calldata _outputToWantRoute,
uint24[] calldata _outputToWantFees,
CommonAddresses calldata _commonAddresses
) public initializer {
__StratFeeManager_init(_commonAddresses);
eToken = _initialVariables.eToken;
want = _outputToWantRoute[_outputToWantRoute.length - 1];
native = _outputToNativeRoute[_outputToNativeRoute.length - 1];
output = _outputToWantRoute[0];
aaveTargetLtv = _initialVariables.aaveTargetLtv;
aaveMaxLtv = _initialVariables.aaveMaxLtv;
exactlyTargetLtv = _initialVariables.exactlyTargetLtv;
exactlyMaxLtv = _initialVariables.exactlyMaxLtv;
minLeverage = _initialVariables.minLeverage;
lendingPool = _initialVariables.lendingPool;
dataProvider = _initialVariables.dataProvider;
rewardsController = _initialVariables.rewardsController;
ILendingPool(lendingPool).setUserEMode(_initialVariables.eMode);
assets[0] = want;
modes[0] = 2;
bool[] memory ops = new bool[](2);
ops[0] = true;
ops[1] = false;
marketOps[0] = IExactlyRewardsController.MarketOperation({ market: eToken, operations: ops });
rewards[0] = output;
outputToNativePath = UniswapV3Utils.routeToPath(_outputToNativeRoute, _outputToNativeFees);
outputToWantPath = UniswapV3Utils.routeToPath(_outputToWantRoute, _outputToWantFees);
_giveAllowances();
}
// puts the funds to work
function deposit() public whenNotPaused {
uint256 wantBal = balanceOfWant();
if (wantBal > 0) {
_leverage();
emit Deposit(balanceOf());
}
}
/**
* @dev Withdraws funds and sends them back to the vault. It deleverages from Aave and Exactly.
* @param _amount How much {want} to withdraw.
*/
function withdraw(uint256 _amount) external {
require(msg.sender == vault, "!vault");
uint256 wantBal = balanceOfWant();
if (wantBal < _amount) {
_deleverage(_amount);
wantBal = balanceOfWant();
}
if (wantBal > _amount) {
wantBal = _amount;
}
if (tx.origin != owner() && !paused()) {
uint256 withdrawalFeeAmount = wantBal * withdrawalFee / WITHDRAWAL_MAX;
wantBal = wantBal - withdrawalFeeAmount;
}
IERC20(want).safeTransfer(vault, wantBal);
emit Withdraw(balanceOf());
}
/**
* @dev LTVs only increase over time, so pay down debts first then leverage up at target LTV.
* Amount to flashloan from Aave results can be formulated from 4 simulatenous equations:
* aaveBorrow = exactlySupply
* exactlySupply = exactlyBorrow / exactlyTargetLtv
* exactlyBorrow = aaveSupply - balance
* aaveSupply = aaveBorrow / aaveTargetLtv
* Solution:
* aaveBorrow = balance / ( (1 / aaveTargetLtv) - exactlyTargetLtv)
*/
function _leverage() internal {
(uint256 aaveSupplyBal, uint256 aaveBorrowBal, uint256 exactlySupplyBal, uint256 exactlyBorrowBal) = getSupplyBorrow();
uint256 exactlyTargetBorrow = exactlySupplyBal * exactlyTargetLtv / 1 ether;
uint256 aaveTargetBorrow = aaveSupplyBal * aaveTargetLtv / 1 ether;
// pay down Exactly debts to reach target LTV
if (exactlyBorrowBal > exactlyTargetBorrow && balanceOfWant() > 0) {
uint256 exactlyRepay = Math.min(exactlyBorrowBal - exactlyTargetBorrow, balanceOfWant());
IExactlyMarket(eToken).repay(exactlyRepay, address(this));
}
// pay down Aave debts to reach target LTV
if (aaveBorrowBal > aaveTargetBorrow && balanceOfWant() > 0) {
uint256 aaveRepay = Math.min(aaveBorrowBal - aaveTargetBorrow, balanceOfWant());
if (aaveRepay > 0) {
ILendingPool(lendingPool).repay(want, aaveRepay, 2, address(this));
}
}
// if we still have left over then leverage at target LTV
if (balanceOfWant() > minLeverage) {
uint256 aaveBorrow = balanceOfWant() * 1 ether / ((1 ether * 1 ether / aaveTargetLtv) - exactlyTargetLtv);
_flashLoan(aaveBorrow);
}
}
/**
* @dev Start the flashloan
* @param _amount extra balance to borrow from Aave
*/
function _flashLoan(uint256 _amount) internal {
uint256[] memory amounts = new uint256[](1);
amounts[0] = _amount;
ILendingPool(lendingPool).flashLoan(address(this), assets, amounts, modes, address(this), "", 0);
}
/**
* @dev Callback from Aave lending pool during flashloan. Supply flashloaned funds in Exactly
* and borrow at Exactly target LTV. Supply borrowed funds in Aave and end the flashloan. A
* debt position is automatically created in Aave from the flashloan with no fees.
*/
function executeOperation(
address[] calldata,
uint256[] calldata _amounts,
uint256[] calldata,
address _initiator,
bytes calldata
) external returns (bool) {
require(_initiator == address(this), "!initiator");
uint256 borrowAmount = _amounts[0] * exactlyTargetLtv / 1 ether;
IExactlyMarket(eToken).deposit(_amounts[0], address(this));
IExactlyMarket(eToken).borrow(borrowAmount, address(this), address(this));
ILendingPool(lendingPool).deposit(want, borrowAmount, address(this), 0);
return true;
}
/**
* @dev Calculates the target supply and borrow balances given the remaining amount of real want
* once the withdrawn amount is removed. Reducing the balances to the targets frees up the
* required amount of want. If supply removal causes health to go below 1 then instead remove
* supply at a healthy limit, pay debts and iterate. Target balances must be reached.
* @param _amount funds to withdraw from the lending pools
*/
function _deleverage(uint256 _amount) internal {
(uint256 aaveSupplyBal, uint256 aaveBorrowBal, uint256 exactlySupplyBal, uint256 exactlyBorrowBal) = getSupplyBorrow();
uint256 remaining = balanceOfPool() - _amount;
uint256 aaveTargetBorrow = remaining * 1 ether / ((1 ether * 1 ether / aaveTargetLtv) - exactlyTargetLtv);
uint256 exactlyTargetSupply = aaveTargetBorrow;
uint256 exactlyTargetBorrow = exactlyTargetSupply * exactlyTargetLtv / 1 ether;
uint256 aaveTargetSupply = exactlyTargetBorrow + remaining;
uint256 amount;
while (
aaveSupplyBal > aaveTargetSupply
|| aaveBorrowBal > aaveTargetBorrow
|| exactlySupplyBal > exactlyTargetSupply
|| exactlyBorrowBal > exactlyTargetBorrow
) {
amount = aaveSupplyBal - Math.max(aaveTargetSupply, aaveBorrowBal * 1 ether / aaveMaxLtv);
if (amount > 0) {
ILendingPool(lendingPool).withdraw(want, amount, address(this));
}
amount = Math.min(exactlyBorrowBal - exactlyTargetBorrow, balanceOfWant());
if (amount > 0) {
IExactlyMarket(eToken).repay(amount, address(this));
}
(, aaveBorrowBal, exactlySupplyBal, exactlyBorrowBal) = getSupplyBorrow();
amount = exactlySupplyBal - Math.max(exactlyTargetSupply, exactlyBorrowBal * 1 ether / exactlyMaxLtv);
if (amount > 0) {
IExactlyMarket(eToken).withdraw(amount, address(this), address(this));
}
amount = Math.min(aaveBorrowBal - aaveTargetBorrow, balanceOfWant());
if (amount > 0) {
ILendingPool(lendingPool).repay(want, amount, 2, address(this));
}
(aaveSupplyBal, aaveBorrowBal, exactlySupplyBal, exactlyBorrowBal) = getSupplyBorrow();
}
}
/**
* @dev Updates the risk profile and rebalances the vault funds accordingly
* @param _aaveTargetLtv new LTV ratio on Aave
* @param _exactlyTargetLtv new LTV ratio on Exactly
*/
function rebalance(uint256 _aaveTargetLtv, uint256 _exactlyTargetLtv) external onlyManager {
require(_aaveTargetLtv < aaveMaxLtv, ">aaveMaxLtv");
require(_exactlyTargetLtv < exactlyMaxLtv, ">exactlyMaxLtv");
_deleverage(balanceOfPool());
aaveTargetLtv = _aaveTargetLtv;
exactlyTargetLtv = _exactlyTargetLtv;
_leverage();
emit StratRebalance(_aaveTargetLtv, _exactlyTargetLtv);
}
function beforeDeposit() external override {
if (harvestOnDeposit) {
require(msg.sender == vault, "!vault");
_harvest(tx.origin);
}
}
function harvest() external virtual {
_harvest(tx.origin);
}
function harvest(address callFeeRecipient) external virtual {
_harvest(callFeeRecipient);
}
function managerHarvest() external onlyManager {
_harvest(tx.origin);
}
// compounds earnings and charges performance fee
function _harvest(address callFeeRecipient) internal whenNotPaused {
IExactlyRewardsController(rewardsController).claim(marketOps, address(this), rewards);
uint256 outputBal = IERC20(output).balanceOf(address(this));
if (outputBal > 0) {
chargeFees(callFeeRecipient);
swapRewards();
uint256 wantHarvested = balanceOfWant();
deposit();
lastHarvest = block.timestamp;
emit StratHarvest(msg.sender, wantHarvested, balanceOf());
}
}
// performance fees
function chargeFees(address callFeeRecipient) internal {
IFeeConfig.FeeCategory memory fees = getFees();
uint256 toNative = IERC20(output).balanceOf(address(this)) * fees.total / DIVISOR;
UniswapV3Utils.swap(unirouter, outputToNativePath, toNative);
uint256 nativeBal = IERC20(native).balanceOf(address(this));
uint256 callFeeAmount = nativeBal * fees.call / DIVISOR;
IERC20(native).safeTransfer(callFeeRecipient, callFeeAmount);
uint256 beefyFeeAmount = nativeBal * fees.beefy / DIVISOR;
IERC20(native).safeTransfer(beefyFeeRecipient, beefyFeeAmount);
uint256 strategistFeeAmount = nativeBal * fees.strategist / DIVISOR;
IERC20(native).safeTransfer(strategist, strategistFeeAmount);
emit ChargedFees(callFeeAmount, beefyFeeAmount, strategistFeeAmount);
}
// swap rewards to {want}
function swapRewards() internal {
if (output != want) {
uint256 toWant = IERC20(output).balanceOf(address(this));
UniswapV3Utils.swap(unirouter, outputToWantPath, toWant);
}
}
/**
* @dev Fetch the supply and borrow balances from Aave and Exactly
* @return aaveSupplyBal supply balance on Aave
* @return aaveBorrowBal borrow balance on Aave
* @return exactlySupplyBal supply balance on Exactly
* @return exactlyBorrowBal borrow balance on Exactly
*/
function getSupplyBorrow() public view returns (
uint256 aaveSupplyBal,
uint256 aaveBorrowBal,
uint256 exactlySupplyBal,
uint256 exactlyBorrowBal
) {
(aaveSupplyBal,,aaveBorrowBal,,,,,,) = IDataProvider(dataProvider).getUserReserveData(want, address(this));
(exactlySupplyBal, exactlyBorrowBal) = IExactlyMarket(eToken).accountSnapshot(address(this));
}
/**
* @dev Calculate LTVs for sanity-checking
* @return aaveLtv LTV on Aave
* @return exactlyLtv LTV on Exactly
*/
function getLtv() external view returns (uint256 aaveLtv, uint256 exactlyLtv) {
(uint256 aaveSupplyBal, uint256 aaveBorrowBal, uint256 exactlySupplyBal, uint256 exactlyBorrowBal) = getSupplyBorrow();
aaveLtv = aaveBorrowBal * 1 ether / aaveSupplyBal;
exactlyLtv = exactlyBorrowBal * 1 ether / exactlySupplyBal;
}
// calculate the total underlaying 'want' held by the strat.
function balanceOf() public view returns (uint256) {
return balanceOfWant() + balanceOfPool();
}
// it calculates how much 'want' this contract holds.
function balanceOfWant() public view returns (uint256) {
return IERC20(want).balanceOf(address(this));
}
// it calculates how much 'want' the strategy has working in the farm.
function balanceOfPool() public view returns (uint256) {
(uint256 aaveSupplyBal, uint256 aaveBorrowBal, uint256 exactlySupplyBal, uint256 exactlyBorrowBal) = getSupplyBorrow();
return aaveSupplyBal + exactlySupplyBal - aaveBorrowBal - exactlyBorrowBal;
}
// returns rewards unharvested
function rewardsAvailable() external view returns (uint256) {
return IExactlyRewardsController(rewardsController).claimable(marketOps, address(this), output);
}
// native reward amount for calling harvest
function callReward() external pure returns (uint256) {
return 0;
}
// returns strategy's eMode
function getEMode() external view returns (uint256) {
return ILendingPool(lendingPool).getUserEMode(address(this));
}
function setHarvestOnDeposit(bool _harvestOnDeposit) external onlyManager {
harvestOnDeposit = _harvestOnDeposit;
if (harvestOnDeposit) {
setWithdrawalFee(0);
} else {
setWithdrawalFee(10);
}
}
// called as part of strat migration. Sends all the available funds back to the vault.
function retireStrat() external {
require(msg.sender == vault, "!vault");
_deleverage(balanceOfPool());
uint256 wantBal = balanceOfWant();
IERC20(want).transfer(vault, wantBal);
}
// pauses deposits and withdraws all funds from third party systems.
function panic() public onlyManager {
_deleverage(balanceOfPool());
pause();
}
function pause() public onlyManager {
_pause();
_removeAllowances();
}
function unpause() external onlyManager {
_unpause();
_giveAllowances();
deposit();
}
function _giveAllowances() internal {
IERC20(want).safeApprove(lendingPool, type(uint).max);
IERC20(want).safeApprove(eToken, type(uint).max);
IERC20(output).safeApprove(unirouter, type(uint).max);
}
function _removeAllowances() internal {
IERC20(want).safeApprove(lendingPool, 0);
IERC20(want).safeApprove(eToken, 0);
IERC20(output).safeApprove(unirouter, 0);
}
function outputToNative() public view returns (address[] memory) {
return UniswapV3Utils.pathToRoute(outputToNativePath);
}
function outputToWant() public view returns (address[] memory) {
return UniswapV3Utils.pathToRoute(outputToWantPath);
}
}// 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);
}// 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);
}// 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");
}
}
}// 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);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator,
Rounding rounding
) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`.
// We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`.
// This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`.
// Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a
// good first aproximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1;
uint256 x = a;
if (x >> 128 > 0) {
x >>= 128;
result <<= 64;
}
if (x >> 64 > 0) {
x >>= 64;
result <<= 32;
}
if (x >> 32 > 0) {
x >>= 32;
result <<= 16;
}
if (x >> 16 > 0) {
x >>= 16;
result <<= 8;
}
if (x >> 8 > 0) {
x >>= 8;
result <<= 4;
}
if (x >> 4 > 0) {
x >>= 4;
result <<= 2;
}
if (x >> 2 > 0) {
result <<= 1;
}
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
uint256 result = sqrt(a);
if (rounding == Rounding.Up && result * result < a) {
result += 1;
}
return result;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}// 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);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal onlyInitializing {
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal onlyInitializing {
_paused = false;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
_requireNotPaused();
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
_requirePaused();
_;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Throws if the contract is paused.
*/
function _requireNotPaused() internal view virtual {
require(!paused(), "Pausable: paused");
}
/**
* @dev Throws if the contract is not paused.
*/
function _requirePaused() internal view virtual {
require(paused(), "Pausable: not paused");
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}// 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);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
interface IDataProvider {
function getReserveTokensAddresses(address asset) external view returns (
address aTokenAddress,
address stableDebtTokenAddress,
address variableDebtTokenAddress
);
function getUserReserveData(address asset, address user) external view returns (
uint256 currentATokenBalance,
uint256 currentStableDebt,
uint256 currentVariableDebt,
uint256 principalStableDebt,
uint256 scaledVariableDebt,
uint256 stableBorrowRate,
uint256 liquidityRate,
uint40 stableRateLastUpdated,
bool usageAsCollateralEnabled
);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
interface ILendingPool {
function deposit(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external;
function borrow(address asset, uint256 amount, uint256 interestRateMode, uint16 referralCode, address onBehalfOf) external;
function repay(address asset, uint256 amount, uint256 rateMode, address onBehalfOf) external returns (uint256);
function withdraw(address asset, uint256 amount, address to) external returns (uint256);
function getUserAccountData(address user) external view returns (
uint256 totalCollateralETH,
uint256 totalDebtETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
);
function setUserEMode(uint8 categoryId) external;
function getUserEMode(address user) external view returns (uint256);
function getEModeCategoryData(uint8 categoryId) external view returns (
uint16 ltv,
uint16 liquidationThreshold,
uint16 liquidationBonus,
address priceSource,
string memory label
);
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata interestRateModes,
address onBehalfOf,
bytes calldata params,
uint16 referralCode
) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IFeeConfig {
struct FeeCategory {
uint256 total;
uint256 beefy;
uint256 call;
uint256 strategist;
string label;
bool active;
}
struct AllFees {
FeeCategory performance;
uint256 deposit;
uint256 withdraw;
}
function getFees(address strategy) external view returns (FeeCategory memory);
function stratFeeId(address strategy) external view returns (uint256);
function setStratFeeId(uint256 feeId) external;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
pragma experimental ABIEncoderV2;
interface IUniswapRouterV3WithDeadline {
struct ExactInputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 amountOutMinimum;
uint160 sqrtPriceLimitX96;
}
/// @notice Swaps `amountIn` of one token for as much as possible of another token
/// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
/// @return amountOut The amount of the received token
function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);
struct ExactInputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 amountOutMinimum;
}
/// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
/// @return amountOut The amount of the received token
function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);
struct ExactOutputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 amountInMaximum;
uint160 sqrtPriceLimitX96;
}
/// @notice Swaps as little as possible of one token for `amountOut` of another token
/// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
/// @return amountIn The amount of the input token
function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);
struct ExactOutputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 amountInMaximum;
}
/// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
/// @return amountIn The amount of the input token
function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IUniswapV3Pool {
function slot0() external view returns (
uint160 sqrtPriceX96,
int24 tick,
uint16 observationIndex,
uint16 observationCardinality,
uint16 observationCardinalityNext,
uint8 feeProtocol,
bool unlocked
);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IExactlyMarket {
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
function borrow(uint256 assets, address receiver, address borrower) external returns (uint256 borrowShares);
function repay(uint256 assets, address borrower) external returns (uint256 actualRepay, uint256 borrowShares);
function accountSnapshot(address account) external view returns (uint256 supply, uint256 borrow);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IExactlyRewardsController {
struct MarketOperation {
address market;
bool[] operations;
}
function claim(
MarketOperation[] memory marketOps,
address to,
address[] memory rewardsList
) external returns (address[] memory, uint256[] memory claimedAmounts);
function claimable(
MarketOperation[] memory marketOps,
address account,
address reward
) external view returns (uint256 unclaimedRewards);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";
import "../../interfaces/common/IFeeConfig.sol";
contract StratFeeManagerInitializable is OwnableUpgradeable, PausableUpgradeable {
struct CommonAddresses {
address vault;
address unirouter;
address keeper;
address strategist;
address beefyFeeRecipient;
address beefyFeeConfig;
}
// common addresses for the strategy
address public vault;
address public unirouter;
address public keeper;
address public strategist;
address public beefyFeeRecipient;
IFeeConfig public beefyFeeConfig;
uint256 constant DIVISOR = 1 ether;
uint256 constant public WITHDRAWAL_FEE_CAP = 50;
uint256 constant public WITHDRAWAL_MAX = 10000;
uint256 internal withdrawalFee;
event SetStratFeeId(uint256 feeId);
event SetWithdrawalFee(uint256 withdrawalFee);
event SetVault(address vault);
event SetUnirouter(address unirouter);
event SetKeeper(address keeper);
event SetStrategist(address strategist);
event SetBeefyFeeRecipient(address beefyFeeRecipient);
event SetBeefyFeeConfig(address beefyFeeConfig);
function __StratFeeManager_init(CommonAddresses calldata _commonAddresses) internal onlyInitializing {
__Ownable_init();
__Pausable_init();
vault = _commonAddresses.vault;
unirouter = _commonAddresses.unirouter;
keeper = _commonAddresses.keeper;
strategist = _commonAddresses.strategist;
beefyFeeRecipient = _commonAddresses.beefyFeeRecipient;
beefyFeeConfig = IFeeConfig(_commonAddresses.beefyFeeConfig);
withdrawalFee = 10;
}
// checks that caller is either owner or keeper.
modifier onlyManager() {
require(msg.sender == owner() || msg.sender == keeper, "!manager");
_;
}
// fetch fees from config contract
function getFees() internal view returns (IFeeConfig.FeeCategory memory) {
return beefyFeeConfig.getFees(address(this));
}
// fetch fees from config contract and dynamic deposit/withdraw fees
function getAllFees() external view returns (IFeeConfig.AllFees memory) {
return IFeeConfig.AllFees(getFees(), depositFee(), withdrawFee());
}
function getStratFeeId() external view returns (uint256) {
return beefyFeeConfig.stratFeeId(address(this));
}
function setStratFeeId(uint256 _feeId) external onlyManager {
beefyFeeConfig.setStratFeeId(_feeId);
emit SetStratFeeId(_feeId);
}
// adjust withdrawal fee
function setWithdrawalFee(uint256 _fee) public onlyManager {
require(_fee <= WITHDRAWAL_FEE_CAP, "!cap");
withdrawalFee = _fee;
emit SetWithdrawalFee(_fee);
}
// set new vault (only for strategy upgrades)
function setVault(address _vault) external onlyOwner {
vault = _vault;
emit SetVault(_vault);
}
// set new unirouter
function setUnirouter(address _unirouter) external onlyOwner {
unirouter = _unirouter;
emit SetUnirouter(_unirouter);
}
// set new keeper to manage strat
function setKeeper(address _keeper) external onlyManager {
keeper = _keeper;
emit SetKeeper(_keeper);
}
// set new strategist address to receive strat fees
function setStrategist(address _strategist) external {
require(msg.sender == strategist, "!strategist");
strategist = _strategist;
emit SetStrategist(_strategist);
}
// set new beefy fee address to receive beefy fees
function setBeefyFeeRecipient(address _beefyFeeRecipient) external onlyOwner {
beefyFeeRecipient = _beefyFeeRecipient;
emit SetBeefyFeeRecipient(_beefyFeeRecipient);
}
// set new fee config address to fetch fees
function setBeefyFeeConfig(address _beefyFeeConfig) external onlyOwner {
beefyFeeConfig = IFeeConfig(_beefyFeeConfig);
emit SetBeefyFeeConfig(_beefyFeeConfig);
}
function depositFee() public virtual view returns (uint256) {
return 0;
}
function withdrawFee() public virtual view returns (uint256) {
return paused() ? 0 : withdrawalFee;
}
function beforeDeposit() external virtual {}
}// SPDX-License-Identifier: Unlicense /* * @title Solidity Bytes Arrays Utils * @author Gonçalo Sá <[email protected]> * * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity. * The library lets you concatenate, slice and type cast bytes arrays both in memory and storage. */ pragma solidity >=0.8.0 <0.9.0; library BytesLib { function concat( bytes memory _preBytes, bytes memory _postBytes ) internal pure returns (bytes memory) { bytes memory tempBytes; assembly { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // Store the length of the first bytes array at the beginning of // the memory for tempBytes. let length := mload(_preBytes) mstore(tempBytes, length) // Maintain a memory counter for the current write location in the // temp bytes array by adding the 32 bytes for the array length to // the starting location. let mc := add(tempBytes, 0x20) // Stop copying when the memory counter reaches the length of the // first bytes array. let end := add(mc, length) for { // Initialize a copy counter to the start of the _preBytes data, // 32 bytes into its memory. let cc := add(_preBytes, 0x20) } lt(mc, end) { // Increase both counters by 32 bytes each iteration. mc := add(mc, 0x20) cc := add(cc, 0x20) } { // Write the _preBytes data into the tempBytes memory 32 bytes // at a time. mstore(mc, mload(cc)) } // Add the length of _postBytes to the current length of tempBytes // and store it as the new length in the first 32 bytes of the // tempBytes memory. length := mload(_postBytes) mstore(tempBytes, add(length, mload(tempBytes))) // Move the memory counter back from a multiple of 0x20 to the // actual end of the _preBytes data. mc := end // Stop copying when the memory counter reaches the new combined // length of the arrays. end := add(mc, length) for { let cc := add(_postBytes, 0x20) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } // Update the free-memory pointer by padding our last write location // to 32 bytes: add 31 bytes to the end of tempBytes to move to the // next 32 byte block, then round down to the nearest multiple of // 32. If the sum of the length of the two arrays is zero then add // one before rounding down to leave a blank 32 bytes (the length block with 0). mstore(0x40, and( add(add(end, iszero(add(length, mload(_preBytes)))), 31), not(31) // Round down to the nearest 32 bytes. )) } return tempBytes; } function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal { assembly { // Read the first 32 bytes of _preBytes storage, which is the length // of the array. (We don't need to use the offset into the slot // because arrays use the entire slot.) let fslot := sload(_preBytes.slot) // Arrays of 31 bytes or less have an even value in their slot, // while longer arrays have an odd value. The actual length is // the slot divided by two for odd values, and the lowest order // byte divided by two for even values. // If the slot is even, bitwise and the slot with 255 and divide by // two to get the length. If the slot is odd, bitwise and the slot // with -1 and divide by two. let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) let newlength := add(slength, mlength) // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage switch add(lt(slength, 32), lt(newlength, 32)) case 2 { // Since the new array still fits in the slot, we just need to // update the contents of the slot. // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length sstore( _preBytes.slot, // all the modifications to the slot are inside this // next block add( // we can just add to the slot contents because the // bytes we want to change are the LSBs fslot, add( mul( div( // load the bytes from memory mload(add(_postBytes, 0x20)), // zero all bytes to the right exp(0x100, sub(32, mlength)) ), // and now shift left the number of bytes to // leave space for the length in the slot exp(0x100, sub(32, newlength)) ), // increase length by the double of the memory // bytes length mul(mlength, 2) ) ) ) } case 1 { // The stored value fits in the slot, but the combined value // will exceed it. // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // The contents of the _postBytes array start 32 bytes into // the structure. Our first read should obtain the `submod` // bytes that can fit into the unused space in the last word // of the stored array. To get this, we read 32 bytes starting // from `submod`, so the data we read overlaps with the array // contents by `submod` bytes. Masking the lowest-order // `submod` bytes allows us to add that value directly to the // stored value. let submod := sub(32, slength) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore( sc, add( and( fslot, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00 ), and(mload(mc), mask) ) ) for { mc := add(mc, 0x20) sc := add(sc, 1) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } default { // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) // Start copying to the last used word of the stored array. let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // Copy over the first `submod` bytes of the new data as in // case 1 above. let slengthmod := mod(slength, 32) let mlengthmod := mod(mlength, 32) let submod := sub(32, slengthmod) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(sload(sc), and(mload(mc), mask))) for { sc := add(sc, 1) mc := add(mc, 0x20) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } } } function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) { require(_bytes.length >= _start + 2, "toUint16_outOfBounds"); uint16 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x2), _start)) } return tempUint; } function toUint24(bytes memory _bytes, uint256 _start) internal pure returns (uint24) { require(_start + 3 >= _start, 'toUint24_overflow'); require(_bytes.length >= _start + 3, 'toUint24_outOfBounds'); uint24 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x3), _start)) } return tempUint; } function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) { require(_bytes.length >= _start + 4, "toUint32_outOfBounds"); uint32 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x4), _start)) } return tempUint; } function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) { require(_bytes.length >= _start + 8, "toUint64_outOfBounds"); uint64 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x8), _start)) } return tempUint; } function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) { require(_bytes.length >= _start + 12, "toUint96_outOfBounds"); uint96 tempUint; assembly { tempUint := mload(add(add(_bytes, 0xc), _start)) } return tempUint; } function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) { require(_bytes.length >= _start + 16, "toUint128_outOfBounds"); uint128 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x10), _start)) } return tempUint; } function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint256 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) { require(_bytes.length >= _start + 32, "toBytes32_outOfBounds"); bytes32 tempBytes32; assembly { tempBytes32 := mload(add(add(_bytes, 0x20), _start)) } return tempBytes32; } function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let mc := add(_preBytes, 0x20) let end := add(mc, length) for { let cc := add(_postBytes, 0x20) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) } eq(add(lt(mc, end), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } } default { // unsuccess: success := 0 } } return success; } function equalStorage( bytes storage _preBytes, bytes memory _postBytes ) internal view returns (bool) { bool success = true; assembly { // we know _preBytes_offset is 0 let fslot := sload(_preBytes.slot) // Decode the length of the stored array like in concatStorage(). let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) // if lengths don't match the arrays are not equal switch eq(slength, mlength) case 1 { // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage if iszero(iszero(slength)) { switch lt(slength, 32) case 1 { // blank the last byte which is the length fslot := mul(div(fslot, 0x100), 0x100) if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) { // unsuccess: success := 0 } } default { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := keccak256(0x0, 0x20) let mc := add(_postBytes, 0x20) let end := add(mc, mlength) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) for {} eq(add(lt(mc, end), cb), 2) { sc := add(sc, 1) mc := add(mc, 0x20) } { if iszero(eq(sload(sc), mload(mc))) { // unsuccess: success := 0 cb := 0 } } } } } default { // unsuccess: success := 0 } } return success; } }
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.6.0;
import './BytesLib.sol';
/// @title Functions for manipulating path data for multihop swaps
library Path {
using BytesLib for bytes;
/// @dev The length of the bytes encoded address
uint256 private constant ADDR_SIZE = 20;
/// @dev The length of the bytes encoded fee
uint256 private constant FEE_SIZE = 3;
/// @dev The offset of a single token address and pool fee
uint256 private constant NEXT_OFFSET = ADDR_SIZE + FEE_SIZE;
/// @dev The offset of an encoded pool key
uint256 private constant POP_OFFSET = NEXT_OFFSET + ADDR_SIZE;
/// @dev The minimum length of an encoding that contains 2 or more pools
uint256 private constant MULTIPLE_POOLS_MIN_LENGTH = POP_OFFSET + NEXT_OFFSET;
/// @notice Returns true iff the path contains two or more pools
/// @param path The encoded swap path
/// @return True if path contains two or more pools, otherwise false
function hasMultiplePools(bytes memory path) internal pure returns (bool) {
return path.length >= MULTIPLE_POOLS_MIN_LENGTH;
}
/// @notice Returns the number of pools in the path
/// @param path The encoded swap path
/// @return The number of pools in the path
function numPools(bytes memory path) internal pure returns (uint256) {
// Ignore the first token address. From then on every fee and token offset indicates a pool.
return ((path.length - ADDR_SIZE) / NEXT_OFFSET);
}
/// @notice Decodes the first pool in path
/// @param path The bytes encoded swap path
/// @return tokenA The first token of the given pool
/// @return tokenB The second token of the given pool
/// @return fee The fee level of the pool
function decodeFirstPool(bytes memory path)
internal
pure
returns (
address tokenA,
address tokenB,
uint24 fee
)
{
tokenA = path.toAddress(0);
fee = path.toUint24(ADDR_SIZE);
tokenB = path.toAddress(NEXT_OFFSET);
}
/// @notice Gets the segment corresponding to the first pool in the path
/// @param path The bytes encoded swap path
/// @return The segment containing all data necessary to target the first pool in the path
function getFirstPool(bytes memory path) internal pure returns (bytes memory) {
return path.slice(0, POP_OFFSET);
}
/// @notice Skips a token + fee element from the buffer and returns the remainder
/// @param path The swap path
/// @return The remaining token + fee elements in the path
function skipToken(bytes memory path) internal pure returns (bytes memory) {
return path.slice(NEXT_OFFSET, path.length - NEXT_OFFSET);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import './Path.sol';
import "../interfaces/common/IUniswapV3Pool.sol";
import "../interfaces/common/IUniswapRouterV3WithDeadline.sol";
library UniswapV3Utils {
using Path for bytes;
// Swap along an encoded path using known amountIn
function swap(
address _router,
bytes memory _path,
uint256 _amountIn
) internal returns (uint256 amountOut) {
IUniswapRouterV3WithDeadline.ExactInputParams memory params = IUniswapRouterV3WithDeadline.ExactInputParams({
path: _path,
recipient: address(this),
deadline: block.timestamp,
amountIn: _amountIn,
amountOutMinimum: 0
});
return IUniswapRouterV3WithDeadline(_router).exactInput(params);
}
// Swap along a token route using known fees and amountIn
function swap(
address _router,
address[] memory _route,
uint24[] memory _fee,
uint256 _amountIn
) internal returns (uint256 amountOut) {
return swap(_router, routeToPath(_route, _fee), _amountIn);
}
// Convert encoded path to token route
function pathToRoute(bytes memory _path) internal pure returns (address[] memory) {
uint256 numPools = _path.numPools();
address[] memory route = new address[](numPools + 1);
for (uint256 i; i < numPools; i++) {
(address tokenA, address tokenB,) = _path.decodeFirstPool();
route[i] = tokenA;
route[i + 1] = tokenB;
_path = _path.skipToken();
}
return route;
}
// Convert token route to encoded path
// uint24 type for fees so path is packed tightly
function routeToPath(
address[] memory _route,
uint24[] memory _fee
) internal pure returns (bytes memory path) {
path = abi.encodePacked(_route[0]);
uint256 feeLength = _fee.length;
for (uint256 i = 0; i < feeLength; i++) {
path = abi.encodePacked(path, _fee[i], _route[i+1]);
}
}
function slot0(address pool) internal view returns (
uint160 sqrtPriceX96,
int24 tick,
uint16 observationIndex,
uint16 observationCardinality,
uint16 observationCardinalityNext,
uint8 feeProtocol,
bool unlocked
) {
return IUniswapV3Pool(pool).slot0();
}
}{
"optimizer": {
"enabled": true,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"callFees","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"beefyFees","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"strategistFees","type":"uint256"}],"name":"ChargedFees","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tvl","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"beefyFeeConfig","type":"address"}],"name":"SetBeefyFeeConfig","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"beefyFeeRecipient","type":"address"}],"name":"SetBeefyFeeRecipient","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"keeper","type":"address"}],"name":"SetKeeper","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"feeId","type":"uint256"}],"name":"SetStratFeeId","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"strategist","type":"address"}],"name":"SetStrategist","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"unirouter","type":"address"}],"name":"SetUnirouter","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"vault","type":"address"}],"name":"SetVault","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"withdrawalFee","type":"uint256"}],"name":"SetWithdrawalFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"harvester","type":"address"},{"indexed":false,"internalType":"uint256","name":"wantHarvested","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"tvl","type":"uint256"}],"name":"StratHarvest","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"aaveLtv","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"exactlyLtv","type":"uint256"}],"name":"StratRebalance","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tvl","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"WITHDRAWAL_FEE_CAP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WITHDRAWAL_MAX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"aaveMaxLtv","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"aaveTargetLtv","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"assets","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOfPool","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOfWant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"beefyFeeConfig","outputs":[{"internalType":"contract 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nalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unirouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"want","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]Contract Creation Code
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Multichain Portfolio | 34 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.