Latest 25 from a total of 6,336 transactions
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Method
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Block
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To
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|---|---|---|---|---|---|---|---|---|---|
| Harvest | 143255979 | 6 days ago | IN | 0 ETH | 0.000000001972 | ||||
| Harvest | 143122084 | 10 days ago | IN | 0 ETH | 0.000000006285 | ||||
| Harvest | 143110154 | 10 days ago | IN | 0 ETH | 0.000000003121 | ||||
| Harvest | 143109335 | 10 days ago | IN | 0 ETH | 0.000000002852 | ||||
| Harvest | 143045784 | 11 days ago | IN | 0 ETH | 0.000000476234 | ||||
| Harvest | 135209486 | 193 days ago | IN | 0 ETH | 0.000001878984 | ||||
| Harvest | 135209469 | 193 days ago | IN | 0 ETH | 0.000001879779 | ||||
| Harvest | 135209459 | 193 days ago | IN | 0 ETH | 0.00000180757 | ||||
| Harvest | 135209442 | 193 days ago | IN | 0 ETH | 0.000002113052 | ||||
| Harvest | 135209432 | 193 days ago | IN | 0 ETH | 0.000002032883 | ||||
| Harvest | 135209416 | 193 days ago | IN | 0 ETH | 0.00000173957 | ||||
| Harvest | 135209405 | 193 days ago | IN | 0 ETH | 0.000001548477 | ||||
| Harvest | 135209400 | 193 days ago | IN | 0 ETH | 0.000001739612 | ||||
| Harvest | 135209394 | 193 days ago | IN | 0 ETH | 0.000001956051 | ||||
| Harvest | 135209378 | 193 days ago | IN | 0 ETH | 0.000001548162 | ||||
| Harvest | 135209367 | 193 days ago | IN | 0 ETH | 0.000001608452 | ||||
| Harvest | 135209356 | 193 days ago | IN | 0 ETH | 0.000001605926 | ||||
| Harvest | 135209340 | 193 days ago | IN | 0 ETH | 0.000001670778 | ||||
| Harvest | 135209329 | 193 days ago | IN | 0 ETH | 0.000001737544 | ||||
| Harvest | 135209318 | 193 days ago | IN | 0 ETH | 0.000001545255 | ||||
| Harvest | 135209307 | 193 days ago | IN | 0 ETH | 0.000001544501 | ||||
| Harvest | 135209297 | 193 days ago | IN | 0 ETH | 0.000001486116 | ||||
| Harvest | 135209287 | 193 days ago | IN | 0 ETH | 0.000001875888 | ||||
| Harvest | 135209281 | 193 days ago | IN | 0 ETH | 0.000001669473 | ||||
| Harvest | 135209265 | 193 days ago | IN | 0 ETH | 0.000001668904 |
Latest 25 internal transactions (View All)
Advanced mode:
| Parent Transaction Hash | Block | From | To | |||
|---|---|---|---|---|---|---|
| 143512784 | 25 hrs ago | 0.000018 ETH | ||||
| 143512784 | 25 hrs ago | 0.000242372990463 ETH | ||||
| 143512784 | 25 hrs ago | 0.000150616190463 ETH | ||||
| 143338087 | 5 days ago | 0.0000917568 ETH | ||||
| 143338087 | 5 days ago | 0.000410825217675 ETH | ||||
| 143338087 | 5 days ago | 0.000392825217675 ETH | ||||
| 143276646 | 6 days ago | 0.000018 ETH | ||||
| 143276646 | 6 days ago | 0.000211591593268 ETH | ||||
| 143276646 | 6 days ago | 0.000193591593268 ETH | ||||
| 143252733 | 7 days ago | 0.000018 ETH | ||||
| 143252733 | 7 days ago | 0.000211623005268 ETH | ||||
| 143252733 | 7 days ago | 0.000193623005268 ETH | ||||
| 143228450 | 7 days ago | 0.000018 ETH | ||||
| 143228450 | 7 days ago | 0.000211592297268 ETH | ||||
| 143228450 | 7 days ago | 0.000193592297268 ETH | ||||
| 143207289 | 8 days ago | 0.000018 ETH | ||||
| 143207289 | 8 days ago | 0.000211607739268 ETH | ||||
| 143207289 | 8 days ago | 0.000193607739268 ETH | ||||
| 143186025 | 8 days ago | 0.000018 ETH | ||||
| 143186025 | 8 days ago | 0.000211593001268 ETH | ||||
| 143186025 | 8 days ago | 0.000193593001268 ETH | ||||
| 143164482 | 9 days ago | 0.000018 ETH | ||||
| 143164482 | 9 days ago | 0.000211831099268 ETH | ||||
| 143164482 | 9 days ago | 0.000193831099268 ETH | ||||
| 143133813 | 9 days ago | 0.000018 ETH |
Cross-Chain Transactions
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Minimal Proxy Contract for 0x16ab7178b1b062a326c007a52e32a67218151b59
Contract Name:
StrategyAuraSideChainOmnichainSwap
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin-4/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin-4/contracts/token/ERC20/utils/SafeERC20.sol";
import "../../interfaces/common/IUniswapRouterETH.sol";
import "../../interfaces/beethovenx/IBalancerVault.sol";
import "../../interfaces/aura/IAuraRewardPool.sol";
import "../../interfaces/curve/IStreamer.sol";
import "../../interfaces/aura/IAuraBooster.sol";
import "../../interfaces/common/IWrappedNative.sol";
import "../Common/StratFeeManagerInitializable.sol";
import "./BalancerActionsLib.sol";
import "./BeefyBalancerStructs.sol";
import "../../utils/UniV3Actions.sol";
interface IBalancerPool {
function getPoolId() external view returns (bytes32);
}
interface ISwapper {
function swapAura(uint256 _amount) external payable;
function estimate(uint256 _amount) external view returns (uint256 gasNeeded);
}
contract StrategyAuraSideChainOmnichainSwap is StratFeeManagerInitializable {
using SafeERC20 for IERC20;
// Tokens used
address public want;
address public output;
address public aura;
address public native;
// Third party contracts
address public booster;
address public rewardPool;
address public uniswapRouter;
address public swapper;
uint256 public pid;
// Balancer Router set up
IBalancerVault.SwapKind public swapKind;
IBalancerVault.FundManagement public funds;
// Swap details
BeefyBalancerStructs.Input public input;
BeefyBalancerStructs.BatchSwapStruct[] public nativeToInputRoute;
BeefyBalancerStructs.BatchSwapStruct[] public outputToNativeRoute;
address[] public nativeToInputAssets;
address[] public outputToNativeAssets;
// Our needed reward token information
mapping(address => BeefyBalancerStructs.Reward) public rewards;
address[] public rewardTokens;
// Some needed state variables
bool public harvestOnDeposit;
uint256 public lastHarvest;
uint256 public totalLocked;
uint256 public minSwap;
uint256 public constant DURATION = 1 days;
event StratHarvest(address indexed harvester, uint256 indexed wantHarvested, uint256 indexed tvl);
event Deposit(uint256 indexed tvl);
event Withdraw(uint256 indexed tvl);
event ChargedFees(uint256 indexed callFees, uint256 indexed beefyFees, uint256 indexed strategistFees);
function initialize(
address _want,
address _aura,
bool _inputIsComposable,
BeefyBalancerStructs.BatchSwapStruct[] memory _nativeToInputRoute,
BeefyBalancerStructs.BatchSwapStruct[] memory _outputToNativeRoute,
address _booster,
address _swapper,
uint256 _pid,
address[] memory _nativeToInput,
address[] memory _outputToNative,
CommonAddresses calldata _commonAddresses
) public initializer {
__StratFeeManager_init(_commonAddresses);
for (uint i; i < _nativeToInputRoute.length; ++i) {
nativeToInputRoute.push(_nativeToInputRoute[i]);
}
for (uint j; j < _outputToNativeRoute.length; ++j) {
outputToNativeRoute.push(_outputToNativeRoute[j]);
}
want = _want;
aura = _aura;
booster = _booster;
pid = _pid;
outputToNativeAssets = _outputToNative;
nativeToInputAssets = _nativeToInput;
output = outputToNativeAssets[0];
native = nativeToInputAssets[0];
input.input = nativeToInputAssets[nativeToInputAssets.length - 1];
input.isComposable = _inputIsComposable;
uniswapRouter = address(0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45);
swapper = _swapper;
(,,,rewardPool,,) = IAuraBooster(booster).poolInfo(pid);
minSwap = 10 ether;
swapKind = IBalancerVault.SwapKind.GIVEN_IN;
funds = IBalancerVault.FundManagement(address(this), false, payable(address(this)), false);
_giveAllowances();
}
// puts the funds to work
function deposit() public whenNotPaused {
uint256 wantBal = IERC20(want).balanceOf(address(this));
if (wantBal > 0) {
IAuraBooster(booster).deposit(pid, wantBal, true);
emit Deposit(balanceOf());
}
}
function withdraw(uint256 _amount) external {
require(msg.sender == vault, "!vault");
uint256 wantBal = IERC20(want).balanceOf(address(this));
if (wantBal < _amount) {
IAuraRewardPool(rewardPool).withdrawAndUnwrap(_amount - wantBal, false);
wantBal = IERC20(want).balanceOf(address(this));
}
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());
}
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);
}
// compounds earnings and charges performance fee
function _harvest(address callFeeRecipient) internal whenNotPaused {
uint256 before = balanceOfWant();
IAuraRewardPool(rewardPool).getReward();
swapRewardsToNative();
uint256 nativeBal = IERC20(native).balanceOf(address(this));
if (nativeBal > 0) {
chargeFees(callFeeRecipient);
addLiquidity();
uint256 wantHarvested = balanceOfWant() - before;
totalLocked = wantHarvested + lockedProfit();
deposit();
lastHarvest = block.timestamp;
emit StratHarvest(msg.sender, wantHarvested, balanceOf());
}
}
function swapRewardsToNative() internal {
uint256 outputBal = IERC20(output).balanceOf(address(this));
if (outputBal > 0) {
IBalancerVault.BatchSwapStep[] memory _swaps = BalancerActionsLib.buildSwapStructArray(outputToNativeRoute, outputBal);
BalancerActionsLib.balancerSwap(unirouter, swapKind, _swaps, outputToNativeAssets, funds, int256(outputBal));
}
// extras
for (uint i; i < rewardTokens.length; ++i) {
uint bal = IERC20(rewardTokens[i]).balanceOf(address(this));
if (bal >= rewards[rewardTokens[i]].minAmount) {
if (rewards[rewardTokens[i]].assets[0] != address(0)) {
BeefyBalancerStructs.BatchSwapStruct[] memory swapInfo = new BeefyBalancerStructs.BatchSwapStruct[](rewards[rewardTokens[i]].assets.length - 1);
for (uint j; j < rewards[rewardTokens[i]].assets.length - 1; ++j) {
swapInfo[j] = rewards[rewardTokens[i]].swapInfo[j];
}
IBalancerVault.BatchSwapStep[] memory _swaps = BalancerActionsLib.buildSwapStructArray(swapInfo, bal);
BalancerActionsLib.balancerSwap(unirouter, swapKind, _swaps, rewards[rewardTokens[i]].assets, funds, int256(bal));
} else {
UniV3Actions.swapV3(uniswapRouter, rewards[rewardTokens[i]].routeToNative, bal);
}
}
}
uint256 auraBal = IERC20(aura).balanceOf(address(this));
uint256 nativeBal = IERC20(native).balanceOf(address(this));
uint256 balanceThis = address(this).balance;
uint256 gasNeeded = ISwapper(swapper).estimate(auraBal);
if ((nativeBal + balanceThis) >= gasNeeded) {
uint256 nativeToWithdraw = gasNeeded <= balanceThis ? 0 : gasNeeded - balanceThis;
if (auraBal > minSwap) {
IWrappedNative(native).withdraw(nativeToWithdraw);
ISwapper(swapper).swapAura{value: gasNeeded}(auraBal);
}
}
}
// performance fees
function chargeFees(address callFeeRecipient) internal {
IFeeConfig.FeeCategory memory fees = getFees();
uint256 nativeBal = IERC20(native).balanceOf(address(this)) * fees.total / DIVISOR;
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);
}
// Adds liquidity to AMM and gets more LP tokens.
function addLiquidity() internal {
uint256 nativeBal = IERC20(native).balanceOf(address(this));
if (native != input.input) {
IBalancerVault.BatchSwapStep[] memory _swaps = BalancerActionsLib.buildSwapStructArray(nativeToInputRoute, nativeBal);
BalancerActionsLib.balancerSwap(unirouter, swapKind, _swaps, nativeToInputAssets, funds, int256(nativeBal));
}
if (input.input != want) {
uint256 inputBal = IERC20(input.input).balanceOf(address(this));
BalancerActionsLib.balancerJoin(unirouter, IBalancerPool(want).getPoolId(), input.input, inputBal);
}
}
function lockedProfit() public view returns (uint256) {
uint256 elapsed = block.timestamp - lastHarvest;
uint256 remaining = elapsed < DURATION ? DURATION - elapsed : 0;
return totalLocked * remaining / DURATION;
}
// calculate the total underlaying 'want' held by the strat.
function balanceOf() public view returns (uint256) {
return balanceOfWant() + balanceOfPool() - lockedProfit();
}
// 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) {
return IAuraRewardPool(rewardPool).balanceOf(address(this));
}
// returns rewards unharvested
function rewardsAvailable() public view returns (uint256) {
return IAuraRewardPool(rewardPool).earned(address(this));
}
// native reward amount for calling harvest
function callReward() public pure returns (uint256) {
return 0; // multiple swap providers with no easy way to estimate native output.
}
function addRewardToken(address _token, BeefyBalancerStructs.BatchSwapStruct[] memory _swapInfo, address[] memory _assets, bytes calldata _routeToNative, uint _minAmount) external onlyOwner {
require(_token != want, "!want");
require(_token != native, "!native");
if (_assets[0] != address(0)) {
IERC20(_token).safeApprove(unirouter, 0);
IERC20(_token).safeApprove(unirouter, type(uint).max);
} else {
IERC20(_token).safeApprove(uniswapRouter, 0);
IERC20(_token).safeApprove(uniswapRouter, type(uint).max);
}
rewards[_token].assets = _assets;
rewards[_token].routeToNative = _routeToNative;
rewards[_token].minAmount = _minAmount;
for (uint i; i < _swapInfo.length; ++i) {
rewards[_token].swapInfo[i].poolId = _swapInfo[i].poolId;
rewards[_token].swapInfo[i].assetInIndex = _swapInfo[i].assetInIndex;
rewards[_token].swapInfo[i].assetOutIndex = _swapInfo[i].assetOutIndex;
}
rewardTokens.push(_token);
}
function resetRewardTokens() external onlyManager {
for (uint i; i < rewardTokens.length; ++i) {
delete rewards[rewardTokens[i]];
}
delete rewardTokens;
}
function setMinSwap(uint256 _min) external onlyManager {
minSwap = _min;
}
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");
IAuraRewardPool(rewardPool).withdrawAndUnwrap(balanceOfPool(), false);
uint256 wantBal = IERC20(want).balanceOf(address(this));
IERC20(want).transfer(vault, wantBal);
}
// pauses deposits and withdraws all funds from third party systems.
function panic() public onlyManager {
pause();
IAuraRewardPool(rewardPool).withdrawAndUnwrap(balanceOfPool(), false);
}
function pause() public onlyManager {
_pause();
_removeAllowances();
}
function unpause() external onlyManager {
_unpause();
_giveAllowances();
deposit();
}
function _giveAllowances() internal {
IERC20(want).safeApprove(booster, type(uint).max);
IERC20(output).safeApprove(unirouter, type(uint).max);
IERC20(native).safeApprove(unirouter, type(uint).max);
IERC20(aura).safeApprove(swapper, type(uint).max);
if (!input.isComposable) {
IERC20(input.input).safeApprove(unirouter, 0);
IERC20(input.input).safeApprove(unirouter, type(uint).max);
}
if (rewardTokens.length != 0) {
for (uint i; i < rewardTokens.length; ++i) {
if (rewards[rewardTokens[i]].assets[0] != address(0)) {
IERC20(rewardTokens[i]).safeApprove(unirouter, 0);
IERC20(rewardTokens[i]).safeApprove(unirouter, type(uint).max);
} else {
IERC20(rewardTokens[i]).safeApprove(uniswapRouter, 0);
IERC20(rewardTokens[i]).safeApprove(uniswapRouter, type(uint).max);
}
}
}
}
function _removeAllowances() internal {
IERC20(want).safeApprove(booster, 0);
IERC20(output).safeApprove(unirouter, 0);
IERC20(native).safeApprove(unirouter, 0);
IERC20(aura).safeApprove(swapper, 0);
if (!input.isComposable) {
IERC20(input.input).safeApprove(unirouter, 0);
}
if (rewardTokens.length != 0) {
for (uint i; i < rewardTokens.length; ++i) {
if (rewards[rewardTokens[i]].assets[0] != address(0)) {
IERC20(rewardTokens[i]).safeApprove(unirouter, 0);
} else {
IERC20(rewardTokens[i]).safeApprove(uniswapRouter, 0);
}
}
}
}
// allow this contract to receive ether
receive() external payable {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - 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 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 {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}// 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 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);
}// 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 v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}// 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 ^0.8.0;
interface IAuraBooster {
function deposit(uint256 pid, uint256 amount, bool stake) external returns (bool);
function withdraw(uint256 _pid, uint256 _amount) external returns(bool);
function earmarkRewards(uint256 _pid) external;
function poolInfo(uint256 pid) external view returns (
address lptoken,
address token,
address gauge,
address crvRewards,
address stash,
bool shutdown
);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
interface IAuraRewardPool {
function deposit(uint256 amount) external;
function stake(uint256 amount) external;
function withdraw(uint256 amount) external;
function earned(address account) external view returns (uint256);
function getReward() external;
function balanceOf(address account) external view returns (uint256);
function stakingToken() external view returns (address);
function rewardsToken() external view returns (address);
function withdrawAndUnwrap(uint256 _amount, bool claim) external;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
pragma experimental ABIEncoderV2;
interface IBalancerVault {
struct SingleSwap {
bytes32 poolId;
SwapKind kind;
address assetIn;
address assetOut;
uint256 amount;
bytes userData;
}
struct BatchSwapStep {
bytes32 poolId;
uint256 assetInIndex;
uint256 assetOutIndex;
uint256 amount;
bytes userData;
}
struct FundManagement {
address sender;
bool fromInternalBalance;
address payable recipient;
bool toInternalBalance;
}
struct JoinPoolRequest {
address[] assets;
uint256[] maxAmountsIn;
bytes userData;
bool fromInternalBalance;
}
enum SwapKind { GIVEN_IN, GIVEN_OUT }
function swap(
SingleSwap memory singleSwap,
FundManagement memory funds,
uint256 limit,
uint256 deadline
) external payable returns (uint256);
function batchSwap(
SwapKind kind,
BatchSwapStep[] memory swaps,
address[] memory assets,
FundManagement memory funds,
int256[] memory limits,
uint256 deadline
) external returns (int256[] memory assetDeltas);
function joinPool(
bytes32 poolId,
address sender,
address recipient,
JoinPoolRequest memory request
) external;
function getPoolTokens(bytes32 poolId)
external
view
returns (
address[] memory tokens,
uint256[] memory balances,
uint256 lastChangeBlock
);
function getPool(bytes32 poolId)
external
view
returns (address, uint8);
function flashLoan(
address recipient,
address[] memory tokens,
uint256[] memory amounts,
bytes memory userData
) 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 ^0.8.0;
interface IKyberElastic {
struct ExactInputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 minAmountOut;
uint160 limitSqrtP;
}
/// @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 swapExactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);
struct ExactInputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 minAmountOut;
}
/// @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 swapExactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);
struct ExactOutputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 maxAmountIn;
uint160 limitSqrtP;
}
/// @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 swapExactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);
struct ExactOutputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 maxAmountIn;
}
/// @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 swapExactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
interface IUniswapRouterETH {
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IUniswapRouterV3 {
struct ExactInputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
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 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 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 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 >=0.6.0;
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 >=0.6.0 <0.9.0;
interface IWrappedNative {
function deposit() external payable;
function withdraw(uint256 wad) external;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;
interface IStreamer {
function get_reward() external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../interfaces/beethovenx/IBalancerVault.sol";
import "@openzeppelin-4/contracts/token/ERC20/ERC20.sol";
import "./BeefyBalancerStructs.sol";
library BalancerActionsLib {
function balancerJoin(address _vault, bytes32 _poolId, address _tokenIn, uint256 _amountIn) internal {
(address[] memory lpTokens,,) = IBalancerVault(_vault).getPoolTokens(_poolId);
uint256[] memory amounts = new uint256[](lpTokens.length);
for (uint256 i = 0; i < amounts.length;) {
amounts[i] = lpTokens[i] == _tokenIn ? _amountIn : 0;
unchecked { ++i; }
}
bytes memory userData = abi.encode(1, amounts, 1);
IBalancerVault.JoinPoolRequest memory request = IBalancerVault.JoinPoolRequest(lpTokens, amounts, userData, false);
IBalancerVault(_vault).joinPool(_poolId, address(this), address(this), request);
}
function multiJoin(address _vault, address _want, bytes32 _poolId, address _token0In, address _token1In, uint256 _amount0In, uint256 _amount1In) internal {
(address[] memory lpTokens,uint256[] memory balances,) = IBalancerVault(_vault).getPoolTokens(_poolId);
uint256 supply = IERC20(_want).totalSupply();
uint256[] memory amounts = new uint256[](lpTokens.length);
for (uint256 i = 0; i < amounts.length;) {
if (lpTokens[i] == _token0In) amounts[i] = _amount0In;
else if (lpTokens[i] == _token1In) amounts[i] = _amount1In;
else amounts[i] = 0;
unchecked { ++i; }
}
uint256 bpt0 = amounts[0] * supply / balances[0] - 10;
uint256 bpt1 = amounts[1] * supply / balances[1] - 10;
uint256 bptOut = bpt0 > bpt1 ? bpt1 : bpt0;
bytes memory userData = abi.encode(3, bptOut);
IBalancerVault.JoinPoolRequest memory request = IBalancerVault.JoinPoolRequest(lpTokens, amounts, userData, false);
IBalancerVault(_vault).joinPool(_poolId, address(this), address(this), request);
}
function buildSwapStructArray(BeefyBalancerStructs.BatchSwapStruct[] memory _route, uint256 _amountIn) internal pure returns (IBalancerVault.BatchSwapStep[] memory) {
IBalancerVault.BatchSwapStep[] memory swaps = new IBalancerVault.BatchSwapStep[](_route.length);
for (uint i; i < _route.length;) {
if (i == 0) {
swaps[0] =
IBalancerVault.BatchSwapStep({
poolId: _route[0].poolId,
assetInIndex: _route[0].assetInIndex,
assetOutIndex: _route[0].assetOutIndex,
amount: _amountIn,
userData: ""
});
} else {
swaps[i] =
IBalancerVault.BatchSwapStep({
poolId: _route[i].poolId,
assetInIndex: _route[i].assetInIndex,
assetOutIndex: _route[i].assetOutIndex,
amount: 0,
userData: ""
});
}
unchecked {
++i;
}
}
return swaps;
}
function balancerSwap(address _vault, IBalancerVault.SwapKind _swapKind, IBalancerVault.BatchSwapStep[] memory _swaps, address[] memory _route, IBalancerVault.FundManagement memory _funds, int256 _amountIn) internal returns (int256[] memory) {
int256[] memory limits = new int256[](_route.length);
for (uint i; i < _route.length;) {
if (i == 0) {
limits[0] = _amountIn;
} else if (i == _route.length - 1) {
limits[i] = -1;
}
unchecked { ++i; }
}
return IBalancerVault(_vault).batchSwap(_swapKind, _swaps, _route, _funds, limits, block.timestamp);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
library BeefyBalancerStructs {
enum RouterType {
BALANCER,
UNISWAP_V2,
UNISWAP_V3
}
struct BatchSwapStruct {
bytes32 poolId;
uint256 assetInIndex;
uint256 assetOutIndex;
}
struct Reward {
RouterType routerType;
address router;
mapping(uint => BatchSwapStruct) swapInfo;
address[] assets;
bytes routeToNative; // backup route in case there is no Balancer liquidity for reward
uint minAmount; // minimum amount to be swapped to native
}
struct Input {
address input;
bool isComposable;
bool isBeets;
}
}// 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() {
_checkManager();
_;
}
function _checkManager() internal view {
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: MIT
pragma solidity ^0.8.0;
import "../interfaces/common/IKyberElastic.sol";
import "../interfaces/common/IUniswapRouterV3.sol";
import "../interfaces/common/IUniswapRouterV3WithDeadline.sol";
library UniV3Actions {
// kyber V3 swap
function kyberSwap(address _router, bytes memory _path, uint256 _amount) internal returns (uint256 amountOut) {
IKyberElastic.ExactInputParams memory swapParams = IKyberElastic.ExactInputParams({
path: _path,
recipient: address(this),
deadline: block.timestamp,
amountIn: _amount,
minAmountOut: 0
});
return IKyberElastic(_router).swapExactInput(swapParams);
}
// Uniswap V3 swap
function swapV3(address _router, bytes memory _path, uint256 _amount) internal returns (uint256 amountOut) {
IUniswapRouterV3.ExactInputParams memory swapParams = IUniswapRouterV3.ExactInputParams({
path: _path,
recipient: address(this),
amountIn: _amount,
amountOutMinimum: 0
});
return IUniswapRouterV3(_router).exactInput(swapParams);
}
// Uniswap V3 swap with deadline
function swapV3WithDeadline(address _router, bytes memory _path, uint256 _amount) internal returns (uint256 amountOut) {
IUniswapRouterV3WithDeadline.ExactInputParams memory swapParams = IUniswapRouterV3WithDeadline.ExactInputParams({
path: _path,
recipient: address(this),
deadline: block.timestamp,
amountIn: _amount,
amountOutMinimum: 0
});
return IUniswapRouterV3WithDeadline(_router).exactInput(swapParams);
}
// Uniswap V3 swap with deadline
function swapV3WithDeadline(address _router, bytes memory _path, uint256 _amount, address _to) internal returns (uint256 amountOut) {
IUniswapRouterV3WithDeadline.ExactInputParams memory swapParams = IUniswapRouterV3WithDeadline.ExactInputParams({
path: _path,
recipient: _to,
deadline: block.timestamp,
amountIn: _amount,
amountOutMinimum: 0
});
return IUniswapRouterV3WithDeadline(_router).exactInput(swapParams);
}
}{
"optimizer": {
"enabled": true,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}Contract ABI
API[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"callFees","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"beefyFees","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"strategistFees","type":"uint256"}],"name":"ChargedFees","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"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":true,"internalType":"uint256","name":"wantHarvested","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"tvl","type":"uint256"}],"name":"StratHarvest","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tvl","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"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":[{"internalType":"address","name":"_token","type":"address"},{"components":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"uint256","name":"assetInIndex","type":"uint256"},{"internalType":"uint256","name":"assetOutIndex","type":"uint256"}],"internalType":"struct BeefyBalancerStructs.BatchSwapStruct[]","name":"_swapInfo","type":"tuple[]"},{"internalType":"address[]","name":"_assets","type":"address[]"},{"internalType":"bytes","name":"_routeToNative","type":"bytes"},{"internalType":"uint256","name":"_minAmount","type":"uint256"}],"name":"addRewardToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"aura","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 IFeeConfig","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"beefyFeeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"beforeDeposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"booster","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"callReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"depositFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"funds","outputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"bool","name":"fromInternalBalance","type":"bool"},{"internalType":"address payable","name":"recipient","type":"address"},{"internalType":"bool","name":"toInternalBalance","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAllFees","outputs":[{"components":[{"components":[{"internalType":"uint256","name":"total","type":"uint256"},{"internalType":"uint256","name":"beefy","type":"uint256"},{"internalType":"uint256","name":"call","type":"uint256"},{"internalType":"uint256","name":"strategist","type":"uint256"},{"internalType":"string","name":"label","type":"string"},{"internalType":"bool","name":"active","type":"bool"}],"internalType":"struct IFeeConfig.FeeCategory","name":"performance","type":"tuple"},{"internalType":"uint256","name":"deposit","type":"uint256"},{"internalType":"uint256","name":"withdraw","type":"uint256"}],"internalType":"struct IFeeConfig.AllFees","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStratFeeId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"callFeeRecipient","type":"address"}],"name":"harvest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"harvest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"harvestOnDeposit","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_want","type":"address"},{"internalType":"address","name":"_aura","type":"address"},{"internalType":"bool","name":"_inputIsComposable","type":"bool"},{"components":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"uint256","name":"assetInIndex","type":"uint256"},{"internalType":"uint256","name":"assetOutIndex","type":"uint256"}],"internalType":"struct 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StratFeeManagerInitializable.CommonAddresses","name":"_commonAddresses","type":"tuple"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"input","outputs":[{"internalType":"address","name":"input","type":"address"},{"internalType":"bool","name":"isComposable","type":"bool"},{"internalType":"bool","name":"isBeets","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"keeper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastHarvest","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lockedProfit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minSwap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"native","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"nativeToInputAssets","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"nativeToInputRoute","outputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"uint256","name":"assetInIndex","type":"uint256"},{"internalType":"uint256","name":"assetOutIndex","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"output","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"outputToNativeAssets","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"outputToNativeRoute","outputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"uint256","name":"assetInIndex","type":"uint256"},{"internalType":"uint256","name":"assetOutIndex","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"panic","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resetRewardTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retireStrat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"enum BeefyBalancerStructs.RouterType","name":"routerType","type":"uint8"},{"internalType":"address","name":"router","type":"address"},{"internalType":"bytes","name":"routeToNative","type":"bytes"},{"internalType":"uint256","name":"minAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsAvailable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_beefyFeeConfig","type":"address"}],"name":"setBeefyFeeConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_beefyFeeRecipient","type":"address"}],"name":"setBeefyFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_harvestOnDeposit","type":"bool"}],"name":"setHarvestOnDeposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_keeper","type":"address"}],"name":"setKeeper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_min","type":"uint256"}],"name":"setMinSwap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_feeId","type":"uint256"}],"name":"setStratFeeId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_strategist","type":"address"}],"name":"setStrategist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_unirouter","type":"address"}],"name":"setUnirouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"setVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fee","type":"uint256"}],"name":"setWithdrawalFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"strategist","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapKind","outputs":[{"internalType":"enum IBalancerVault.SwapKind","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalLocked","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"uniswapRouter","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"},{"stateMutability":"payable","type":"receive"}]Loading...
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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.