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Contract Name:
RewardManager
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "contracts/access/Ownable.sol"; import "contracts/proxy/utils/Initializable.sol"; import "contracts/utils/structs/EnumerableSet.sol"; import "contracts/token/ERC20/utils/SafeERC20.sol"; import "contracts/token/ERC20/extensions/IERC20Metadata.sol"; import "interfaces/pools/IConicPool.sol"; import "interfaces/pools/ILpToken.sol"; import "interfaces/pools/IRewardManager.sol"; import "interfaces/IConvexHandler.sol"; import "interfaces/IController.sol"; import "interfaces/IOracle.sol"; import "interfaces/tokenomics/IInflationManager.sol"; import "interfaces/tokenomics/ILpTokenStaker.sol"; import "interfaces/vendor/ICurvePoolV2.sol"; import "interfaces/vendor/UniswapRouter02.sol"; import "libraries/ScaledMath.sol"; import "libraries/Types.sol"; contract RewardManager is IRewardManager, Ownable, Initializable { using ScaledMath for uint256; using SafeERC20 for IERC20; using EnumerableSet for EnumerableSet.AddressSet; struct RewardMeta { uint256 earnedIntegral; uint256 lastHoldings; mapping(address => uint256) accountIntegral; mapping(address => uint256) accountShare; } IERC20 public constant CVX = IERC20(0x4e3FBD56CD56c3e72c1403e103b45Db9da5B9D2B); IERC20 public constant CRV = IERC20(0xD533a949740bb3306d119CC777fa900bA034cd52); IERC20 public constant WETH = IERC20(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2); IERC20 public constant CNC = IERC20(0x9aE380F0272E2162340a5bB646c354271c0F5cFC); UniswapRouter02 public constant SUSHISWAP = UniswapRouter02(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F); ICurvePoolV2 public constant CNC_ETH_POOL = ICurvePoolV2(0x838af967537350D2C44ABB8c010E49E32673ab94); uint256 public constant MAX_FEE_PERCENTAGE = 3e17; uint256 public constant SLIPPAGE_THRESHOLD = 0.95e18; // 5% slippage as a multiplier bytes32 internal constant _CNC_KEY = "cnc"; bytes32 internal constant _CRV_KEY = "crv"; bytes32 internal constant _CVX_KEY = "cvx"; address public override conicPool; IERC20 public immutable underlying; IController public immutable controller; bool internal _claimingCNC; EnumerableSet.AddressSet internal _extraRewards; mapping(address => address) public extraRewardsCurvePool; mapping(bytes32 => RewardMeta) internal _rewardsMeta; mapping(uint256 => bool) internal _claimedForCliff; bool public feesEnabled; uint256 public feePercentage; constructor(address _controller, address _underlying) { underlying = IERC20(_underlying); controller = IController(_controller); WETH.safeApprove(address(CNC_ETH_POOL), type(uint256).max); } function initialize(address _pool) external onlyOwner initializer { conicPool = _pool; } /// @notice Updates the internal fee accounting state. Returns `true` if rewards were claimed function poolCheckpoint() public override returns (bool) { IConvexHandler convexHandler = IConvexHandler(controller.convexHandler()); ( uint256 crvHoldings, uint256 cvxHoldings, uint256 cncHoldings, Types.CliffInfo memory cliffInfo ) = _getHoldingsWithCliffInfo(convexHandler); // if we are in the threshold near a cliff for the first time claim rewards if (cliffInfo.withinThreshold && !_claimedForCliff[cliffInfo.currentCliff]) { _claimPoolEarningsForCliff(cliffInfo.currentCliff); } uint256 crvEarned = crvHoldings - _rewardsMeta[_CRV_KEY].lastHoldings; uint256 cvxEarned; if (cvxHoldings > _rewardsMeta[_CVX_KEY].lastHoldings) { cvxEarned = cvxHoldings - _rewardsMeta[_CVX_KEY].lastHoldings; } uint256 cncEarned = cncHoldings - _rewardsMeta[_CNC_KEY].lastHoldings; uint256 crvFee; uint256 cvxFee; if (feesEnabled) { crvFee = crvEarned.mulDown(feePercentage); cvxFee = cvxEarned.mulDown(feePercentage); crvEarned -= crvFee; cvxEarned -= cvxFee; crvHoldings -= crvFee; cvxHoldings -= cvxFee; } uint256 _totalStaked = controller.lpTokenStaker().getBalanceForPool(conicPool); if (_totalStaked > 0) { _updateEarned(_CVX_KEY, cvxHoldings, cvxEarned, _totalStaked); _updateEarned(_CRV_KEY, crvHoldings, crvEarned, _totalStaked); _updateEarned(_CNC_KEY, cncHoldings, cncEarned, _totalStaked); } if (!feesEnabled) { return false; } bool rewardsClaimed = false; if (crvFee > CRV.balanceOf(conicPool) || cvxFee > CVX.balanceOf(conicPool)) { _claimPoolEarningsAndSellRewardTokens(); rewardsClaimed = true; } CRV.safeTransferFrom(conicPool, address(this), crvFee); CVX.safeTransferFrom(conicPool, address(this), cvxFee); // Fee transfer to the fee recipient IFeeRecipient _feeRecipient = controller.feeRecipient(); CRV.forceApprove(address(_feeRecipient), crvFee); CVX.forceApprove(address(_feeRecipient), cvxFee); _feeRecipient.receiveFees(crvFee, cvxFee); return rewardsClaimed; } function _updateEarned( bytes32 key, uint256 holdings, uint256 earned, uint256 _totalSupply ) internal { _rewardsMeta[key].earnedIntegral += earned.divDown(_totalSupply); _rewardsMeta[key].lastHoldings = holdings; } function _getEarnedRewards() internal view returns (uint256 crvEarned, uint256 cvxEarned, uint256 cncEarned) { IConvexHandler convexHandler = IConvexHandler(controller.convexHandler()); return _getEarnedRewards(convexHandler); } function _getHoldingsWithCliffInfo( IConvexHandler convexHandler ) internal view returns ( uint256 crvHoldings, uint256 cvxHoldings, uint256 cncHoldings, Types.CliffInfo memory cliffInfo ) { address[] memory curvePools = IConicPool(conicPool).allPools(); uint256 claimableCRV; for (uint256 i; i < curvePools.length; i++) { claimableCRV += controller.poolAdapterFor(curvePools[i]).getCRVEarnedOnConvex( conicPool, curvePools[i] ); } crvHoldings = CRV.balanceOf(conicPool) + claimableCRV; uint256 claimableCVX; (claimableCVX, cliffInfo) = convexHandler.computeClaimableConvexWithCliffInfo(claimableCRV); cvxHoldings = CVX.balanceOf(conicPool) + claimableCVX; cncHoldings = CNC.balanceOf(conicPool); if (!_claimingCNC) { cncHoldings += controller.lpTokenStaker().claimableCnc(conicPool); } } function _getHoldings( IConvexHandler convexHandler ) internal view returns (uint256 crvHoldings, uint256 cvxHoldings, uint256 cncHoldings) { (crvHoldings, cvxHoldings, cncHoldings, ) = _getHoldingsWithCliffInfo(convexHandler); } function _getEarnedRewards( IConvexHandler convexHandler ) internal view returns (uint256 crvEarned, uint256 cvxEarned, uint256 cncEarned) { ( uint256 currentHoldingsCRV, uint256 currentHoldingsCVX, uint256 currentHoldingsCNC ) = _getHoldings(convexHandler); crvEarned = currentHoldingsCRV - _rewardsMeta[_CRV_KEY].lastHoldings; cvxEarned = currentHoldingsCVX - _rewardsMeta[_CVX_KEY].lastHoldings; cncEarned = currentHoldingsCNC - _rewardsMeta[_CNC_KEY].lastHoldings; } function accountCheckpoint(address account) external { _accountCheckpoint(account); } function _accountCheckpoint(address account) internal { uint256 accountBalance = controller.lpTokenStaker().getUserBalanceForPool( conicPool, account ); poolCheckpoint(); _updateAccountRewardsMeta(_CNC_KEY, account, accountBalance); _updateAccountRewardsMeta(_CRV_KEY, account, accountBalance); _updateAccountRewardsMeta(_CVX_KEY, account, accountBalance); } function _updateAccountRewardsMeta(bytes32 key, address account, uint256 balance) internal { RewardMeta storage meta = _rewardsMeta[key]; uint256 share = balance.mulDown(meta.earnedIntegral - meta.accountIntegral[account]); meta.accountShare[account] += share; meta.accountIntegral[account] = meta.earnedIntegral; } /// @notice Claims all CRV, CVX and CNC earned by a user. All extra reward /// tokens earned will be sold for CNC. /// @dev Conic pool LP tokens need to be staked in the `LpTokenStaker` in /// order to receive a share of the CRV, CVX and CNC earnings. /// after selling all extra reward tokens. function claimEarnings() public override returns (uint256, uint256, uint256) { _accountCheckpoint(msg.sender); uint256 crvAmount = _rewardsMeta[_CRV_KEY].accountShare[msg.sender]; uint256 cvxAmount = _rewardsMeta[_CVX_KEY].accountShare[msg.sender]; uint256 cncAmount = _rewardsMeta[_CNC_KEY].accountShare[msg.sender]; if ( crvAmount > CRV.balanceOf(conicPool) || cvxAmount > CVX.balanceOf(conicPool) || cncAmount > CNC.balanceOf(conicPool) ) { _claimPoolEarningsAndSellRewardTokens(); if (_extraRewards.length() > 0) { // if we sold some rewards for CNC, we need to update the account checkpoint _accountCheckpoint(msg.sender); cncAmount = _rewardsMeta[_CNC_KEY].accountShare[msg.sender]; } } _rewardsMeta[_CNC_KEY].accountShare[msg.sender] = 0; _rewardsMeta[_CVX_KEY].accountShare[msg.sender] = 0; _rewardsMeta[_CRV_KEY].accountShare[msg.sender] = 0; CRV.safeTransferFrom(conicPool, msg.sender, crvAmount); CVX.safeTransferFrom(conicPool, msg.sender, cvxAmount); if (CNC.balanceOf(conicPool) >= cncAmount) { CNC.safeTransferFrom(conicPool, msg.sender, cncAmount); } ( uint256 currentHoldingsCRV, uint256 currentHoldingsCVX, uint256 currentHoldingsCNC ) = _getHoldings(IConvexHandler(controller.convexHandler())); _rewardsMeta[_CRV_KEY].lastHoldings = currentHoldingsCRV; _rewardsMeta[_CVX_KEY].lastHoldings = currentHoldingsCVX; _rewardsMeta[_CNC_KEY].lastHoldings = currentHoldingsCNC; emit EarningsClaimed(msg.sender, cncAmount, crvAmount, cvxAmount); return (cncAmount, crvAmount, cvxAmount); } /// @notice Claims all claimable CVX and CRV from Convex for all staked Curve LP tokens. /// Then Swaps all additional rewards tokens for CNC. function claimPoolEarningsAndSellRewardTokens() external override { if (!poolCheckpoint()) { _claimPoolEarningsAndSellRewardTokens(); } } function _claimPoolEarningsForCliff(uint256 cliff) internal { _claimPoolEarningsAndSellRewardTokens(); _claimedForCliff[cliff] = true; } function _claimPoolEarningsAndSellRewardTokens() internal { _claimPoolEarnings(); uint256 cncBalanceBefore_ = CNC.balanceOf(conicPool); _sellRewardTokens(); uint256 receivedCnc_ = CNC.balanceOf(conicPool) - cncBalanceBefore_; uint256 _totalStaked = controller.lpTokenStaker().getBalanceForPool(conicPool); if (_totalStaked > 0 && receivedCnc_ > 0) { _rewardsMeta[_CNC_KEY].earnedIntegral += receivedCnc_.divDown(_totalStaked); _rewardsMeta[_CNC_KEY].lastHoldings += receivedCnc_; emit SoldRewardTokens(receivedCnc_); } } /// @notice Claims all claimable CVX and CRV from Convex for all staked Curve LP tokens function _claimPoolEarnings() internal { _claimingCNC = true; controller.lpTokenStaker().claimCNCRewardsForPool(conicPool); _claimingCNC = false; uint256 cvxBalance = CVX.balanceOf(conicPool); uint256 crvBalance = CRV.balanceOf(conicPool); address[] memory pools = IConicPool(conicPool).allPools(); for (uint256 i; i < pools.length; i++) { controller.poolAdapterFor(pools[i]).claimEarnings(conicPool, pools[i]); } uint256 claimedCvx = CVX.balanceOf(conicPool) - cvxBalance; uint256 claimedCrv = CRV.balanceOf(conicPool) - crvBalance; emit ClaimedRewards(claimedCrv, claimedCvx); } /// @notice Swaps all additional rewards tokens for CNC. function _sellRewardTokens() internal { uint256 extraRewardsLength_ = _extraRewards.length(); if (extraRewardsLength_ == 0) return; for (uint256 i; i < extraRewardsLength_; i++) { IERC20(_extraRewards.at(i)).safeTransferFrom( conicPool, address(this), IERC20(_extraRewards.at(i)).balanceOf(conicPool) ); _swapRewardTokenForWeth(_extraRewards.at(i)); } _swapWethForCNC(); } function listExtraRewards() external view returns (address[] memory) { return _extraRewards.values(); } function addExtraReward(address reward) public override onlyOwner returns (bool) { require(reward != address(0), "invalid address"); require(!_extraRewards.contains(reward), "already added"); require( reward != address(CVX) && reward != address(CRV) && reward != address(underlying) && reward != address(CNC), "token not allowed" ); // Checking reward token isn't a Curve Pool LP Token address[] memory pools = IConicPool(conicPool).allPools(); for (uint256 i; i < pools.length; i++) { address curveLpToken_ = controller.poolAdapterFor(pools[i]).lpToken(pools[i]); require(reward != curveLpToken_, "token not allowed"); } IConicPool(conicPool).updateRewardSpendingApproval(reward, true); IERC20(reward).safeApprove(address(SUSHISWAP), 0); IERC20(reward).safeApprove(address(SUSHISWAP), type(uint256).max); emit ExtraRewardAdded(reward); return _extraRewards.add(reward); } function addBatchExtraRewards(address[] memory _rewards) external override onlyOwner { for (uint256 i; i < _rewards.length; i++) { addExtraReward(_rewards[i]); } } function removeExtraReward(address tokenAddress) external onlyOwner { require(_extraRewards.contains(tokenAddress), "not added"); _extraRewards.remove(tokenAddress); IConicPool(conicPool).updateRewardSpendingApproval(tokenAddress, false); emit ExtraRewardRemoved(tokenAddress); } function setExtraRewardsCurvePool(address extraReward_, address curvePool_) external onlyOwner { require(curvePool_ != extraRewardsCurvePool[extraReward_], "must be different to current"); if (curvePool_ != address(0)) { IERC20(extraReward_).safeApprove(curvePool_, 0); IERC20(extraReward_).safeApprove(curvePool_, type(uint256).max); } extraRewardsCurvePool[extraReward_] = curvePool_; emit ExtraRewardsCurvePoolSet(extraReward_, curvePool_); } function setFeePercentage(uint256 _feePercentage) external override onlyOwner { require(_feePercentage < MAX_FEE_PERCENTAGE, "cannot set fee percentage to more than 30%"); require(_feePercentage != feePercentage, "must be different to current"); require(address(controller.feeRecipient()) != address(0), "fee recipient not set"); feePercentage = _feePercentage; feesEnabled = _feePercentage > 0; emit FeesSet(feePercentage); } function claimableRewards( address account ) external view returns (uint256 cncRewards, uint256 crvRewards, uint256 cvxRewards) { uint256 _totalStaked = controller.lpTokenStaker().getBalanceForPool(conicPool); (uint256 crvEarned, uint256 cvxEarned, uint256 cncEarned) = _getEarnedRewards(); uint256 userBalance = controller.lpTokenStaker().getUserBalanceForPool(conicPool, account); cncRewards = _getClaimableReward( account, _CNC_KEY, cncEarned, userBalance, _totalStaked, false ); crvRewards = _getClaimableReward( account, _CRV_KEY, crvEarned, userBalance, _totalStaked, feesEnabled ); cvxRewards = _getClaimableReward( account, _CVX_KEY, cvxEarned, userBalance, _totalStaked, feesEnabled ); } function _getClaimableReward( address account, bytes32 key, uint256 earned, uint256 userBalance, uint256 _totalSupply, bool deductFee ) internal view returns (uint256) { RewardMeta storage meta = _rewardsMeta[key]; uint256 integral = meta.earnedIntegral; if (_totalSupply > 0) { if (deductFee) { integral += earned.mulDown(ScaledMath.ONE - feePercentage).divDown(_totalSupply); } else { integral += earned.divDown(_totalSupply); } } return meta.accountShare[account] + userBalance.mulDown(integral - meta.accountIntegral[account]); } function _swapRewardTokenForWeth(address rewardToken_) internal { uint256 tokenBalance_ = IERC20(rewardToken_).balanceOf(address(this)); if (tokenBalance_ == 0) return; ICurvePoolV2 curvePool_ = ICurvePoolV2(extraRewardsCurvePool[rewardToken_]); if (address(curvePool_) != address(0)) { (int128 i, int128 j, ) = controller.curveRegistryCache().coinIndices( address(curvePool_), rewardToken_, address(WETH) ); (uint256 from_, uint256 to_) = (uint256(uint128(i)), uint256(uint128(j))); curvePool_.exchange( from_, to_, tokenBalance_, _minAmountOut(address(rewardToken_), address(WETH), tokenBalance_), false, address(this) ); return; } address[] memory path_ = new address[](2); path_[0] = rewardToken_; path_[1] = address(WETH); SUSHISWAP.swapExactTokensForTokens( tokenBalance_, _minAmountOut(address(rewardToken_), address(WETH), tokenBalance_), path_, address(this), block.timestamp ); } function _swapWethForCNC() internal { uint256 wethBalance_ = WETH.balanceOf(address(this)); if (wethBalance_ == 0) return; CNC_ETH_POOL.exchange( 0, 1, wethBalance_, _minAmountOut(address(WETH), address(CNC), wethBalance_), false, conicPool ); } function _minAmountOut( address tokenIn_, address tokenOut_, uint256 amountIn_ ) internal view returns (uint256) { IOracle oracle_ = controller.priceOracle(); if (tokenIn_ == tokenOut_) { return amountIn_; } // If we don't have a price for either token, we can't calculate the min amount out // This should only ever happen for very minor tokens, so we accept the risk of not having // slippage protection in that case if (!oracle_.isTokenSupported(tokenIn_) || !oracle_.isTokenSupported(tokenOut_)) { return 0; } return amountIn_ .mulDown(oracle_.getUSDPrice(tokenIn_)) .divDown(oracle_.getUSDPrice(tokenOut_)) .convertScale( IERC20Metadata(tokenIn_).decimals(), IERC20Metadata(tokenOut_).decimals() ) .mulDown(SLIPPAGE_THRESHOLD); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "contracts/utils/Context.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 Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _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. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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); } }
// 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 v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "contracts/utils/Address.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] * ```solidity * 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. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!Address.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. * * 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. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * 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. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ 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. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized != type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or 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 { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "contracts/token/ERC20/IERC20.sol"; import "contracts/token/ERC20/extensions/IERC20Permit.sol"; import "contracts/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; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ 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)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ 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"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ 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"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 v4.9.0) (token/ERC20/extensions/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 "contracts/token/ERC20/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: GPL-3.0-or-later pragma solidity 0.8.17; import "interfaces/pools/ILpToken.sol"; import "interfaces/pools/IRewardManager.sol"; import "interfaces/IOracle.sol"; import "interfaces/IController.sol"; import "interfaces/IPausable.sol"; import "interfaces/pools/IConicPoolWeightManagement.sol"; interface IConicPool is IConicPoolWeightManagement, IPausable { event Deposit( address indexed sender, address indexed receiver, uint256 depositedAmount, uint256 lpReceived ); event Withdraw(address indexed account, uint256 amount); event NewWeight(address indexed curvePool, uint256 newWeight); event NewMaxIdleCurveLpRatio(uint256 newRatio); event ClaimedRewards(uint256 claimedCrv, uint256 claimedCvx); event HandledDepeggedCurvePool(address curvePool_); event HandledInvalidConvexPid(address curvePool_, uint256 pid_); event CurvePoolAdded(address curvePool_); event CurvePoolRemoved(address curvePool_); event Shutdown(); event DepegThresholdUpdated(uint256 newThreshold); event MaxDeviationUpdated(uint256 newMaxDeviation); event RebalancingRewardsEnabledSet(bool enabled); event EmergencyRebalancingRewardFactorUpdated(uint256 factor); struct PoolWithAmount { address poolAddress; uint256 amount; } function underlying() external view returns (IERC20Metadata); function lpToken() external view returns (ILpToken); function rewardManager() external view returns (IRewardManager); function depegThreshold() external view returns (uint256); function maxDeviation() external view returns (uint256); function maxIdleCurveLpRatio() external view returns (uint256); function setMaxIdleCurveLpRatio(uint256 value) external; function setMaxDeviation(uint256 maxDeviation_) external; function updateDepegThreshold(uint256 value) external; function depositFor( address _account, uint256 _amount, uint256 _minLpReceived, bool stake ) external returns (uint256); function deposit(uint256 _amount, uint256 _minLpReceived) external returns (uint256); function deposit( uint256 _amount, uint256 _minLpReceived, bool stake ) external returns (uint256); function exchangeRate() external view returns (uint256); function usdExchangeRate() external view returns (uint256); function unstakeAndWithdraw(uint256 _amount, uint256 _minAmount) external returns (uint256); function unstakeAndWithdraw( uint256 _amount, uint256 _minAmount, address _to ) external returns (uint256); function withdraw(uint256 _amount, uint256 _minAmount) external returns (uint256); function withdraw(uint256 _amount, uint256 _minAmount, address _to) external returns (uint256); function getAllocatedUnderlying() external view returns (PoolWithAmount[] memory); function rebalancingRewardActive() external view returns (bool); function totalDeviationAfterWeightUpdate() external view returns (uint256); function computeTotalDeviation() external view returns (uint256); /// @notice returns the total amount of funds held by this pool in terms of underlying function totalUnderlying() external view returns (uint256); function getTotalAndPerPoolUnderlying() external view returns ( uint256 totalUnderlying_, uint256 totalAllocated_, uint256[] memory perPoolUnderlying_ ); /// @notice same as `totalUnderlying` but returns a cached version /// that might be slightly outdated if oracle prices have changed /// @dev this is useful in cases where we want to reduce gas usage and do /// not need a precise value function cachedTotalUnderlying() external view returns (uint256); function updateRewardSpendingApproval(address token, bool approved) external; function shutdownPool() external; function isShutdown() external view returns (bool); function isBalanced() external view returns (bool); function rebalancingRewardsEnabled() external view returns (bool); function setRebalancingRewardsEnabled(bool enabled) external; function getAllUnderlyingCoins() external view returns (address[] memory result); function rebalancingRewardsFactor() external view returns (uint256); function rebalancingRewardsActivatedAt() external view returns (uint64); function getWeights() external view returns (PoolWeight[] memory); function runSanityChecks() external; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "contracts/token/ERC20/extensions/IERC20Metadata.sol"; interface ILpToken is IERC20Metadata { function minter() external view returns (address); function mint(address account, uint256 amount, address ubo) external returns (uint256); function burn(address _owner, uint256 _amount, address ubo) external returns (uint256); function taint(address from, address to, uint256 amount) external; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IRewardManager { event ClaimedRewards(uint256 claimedCrv, uint256 claimedCvx); event SoldRewardTokens(uint256 targetTokenReceived); event ExtraRewardAdded(address reward); event ExtraRewardRemoved(address reward); event ExtraRewardsCurvePoolSet(address extraReward, address curvePool); event FeesSet(uint256 feePercentage); event FeesEnabled(uint256 feePercentage); event EarningsClaimed( address indexed claimedBy, uint256 cncEarned, uint256 crvEarned, uint256 cvxEarned ); function accountCheckpoint(address account) external; function poolCheckpoint() external returns (bool); function addExtraReward(address reward) external returns (bool); function addBatchExtraRewards(address[] memory rewards) external; function conicPool() external view returns (address); function setFeePercentage(uint256 _feePercentage) external; function claimableRewards( address account ) external view returns (uint256 cncRewards, uint256 crvRewards, uint256 cvxRewards); function claimEarnings() external returns (uint256, uint256, uint256); function claimPoolEarningsAndSellRewardTokens() external; function feePercentage() external view returns (uint256); function feesEnabled() external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IOracle { event TokenUpdated(address indexed token, address feed, uint256 maxDelay, bool isEthPrice); /// @notice returns the price in USD of symbol. function getUSDPrice(address token) external view returns (uint256); /// @notice returns if the given token is supported for pricing. function isTokenSupported(address token) external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "interfaces/pools/IConicPoolWeightManagement.sol"; import "interfaces/pools/IConicPool.sol"; import "interfaces/IGenericOracle.sol"; import "interfaces/tokenomics/IInflationManager.sol"; import "interfaces/tokenomics/ILpTokenStaker.sol"; import "interfaces/tokenomics/IBonding.sol"; import "interfaces/IPoolAdapter.sol"; import "interfaces/IFeeRecipient.sol"; import "interfaces/ICurveRegistryCache.sol"; interface IController { event PoolAdded(address indexed pool); event PoolRemoved(address indexed pool); event PoolShutdown(address indexed pool); event ConvexBoosterSet(address convexBooster); event CurveHandlerSet(address curveHandler); event ConvexHandlerSet(address convexHandler); event CurveRegistryCacheSet(address curveRegistryCache); event InflationManagerSet(address inflationManager); event BondingSet(address bonding); event FeeRecipientSet(address feeRecipient); event PriceOracleSet(address priceOracle); event WeightUpdateMinDelaySet(uint256 weightUpdateMinDelay); event PauseManagerSet(address indexed manager, bool isManager); event MultiDepositsWithdrawsWhitelistSet(address pool, bool allowed); event MinimumTaintedTransferAmountSet(address indexed token, uint256 amount); event DefaultPoolAdapterSet(address poolAdapter); event CustomPoolAdapterSet(address indexed pool, address poolAdapter); struct WeightUpdate { address conicPoolAddress; IConicPoolWeightManagement.PoolWeight[] weights; } function initialize(address _lpTokenStaker) external; // inflation manager function inflationManager() external view returns (IInflationManager); function setInflationManager(address manager) external; // views function curveRegistryCache() external view returns (ICurveRegistryCache); // pool adapter function poolAdapterFor(address pool) external view returns (IPoolAdapter); function defaultPoolAdapter() external view returns (IPoolAdapter); function setDefaultPoolAdapter(address poolAdapter) external; function setCustomPoolAdapter(address pool, address poolAdapter) external; /// lp token staker function switchLpTokenStaker(address _lpTokenStaker) external; function lpTokenStaker() external view returns (ILpTokenStaker); // bonding function bonding() external view returns (IBonding); function setBonding(address _bonding) external; // fees function feeRecipient() external view returns (IFeeRecipient); function setFeeRecipient(address _feeRecipient) external; // oracle function priceOracle() external view returns (IGenericOracle); function setPriceOracle(address oracle) external; // pool functions function listPools() external view returns (address[] memory); function listActivePools() external view returns (address[] memory); function isPool(address poolAddress) external view returns (bool); function isActivePool(address poolAddress) external view returns (bool); function addPool(address poolAddress) external; function shutdownPool(address poolAddress) external; function removePool(address poolAddress) external; function cncToken() external view returns (address); function lastWeightUpdate(address poolAddress) external view returns (uint256); function updateWeights(WeightUpdate memory update) external; function updateAllWeights(WeightUpdate[] memory weights) external; // handler functions function convexBooster() external view returns (address); function curveHandler() external view returns (address); function convexHandler() external view returns (address); function setConvexBooster(address _convexBooster) external; function setCurveHandler(address _curveHandler) external; function setConvexHandler(address _convexHandler) external; function setCurveRegistryCache(address curveRegistryCache_) external; function setWeightUpdateMinDelay(uint256 delay) external; function isPauseManager(address account) external view returns (bool); function listPauseManagers() external view returns (address[] memory); function setPauseManager(address account, bool isManager) external; // deposit/withdrawal whitelist function isAllowedMultipleDepositsWithdraws(address poolAddress) external view returns (bool); function setAllowedMultipleDepositsWithdraws(address account, bool allowed) external; function getMultipleDepositsWithdrawsWhitelist() external view returns (address[] memory); // tainted transfer amount function setMinimumTaintedTransferAmount(address token, uint256 amount) external; function getMinimumTaintedTransferAmount(address token) external view returns (uint256); // constants function MAX_WEIGHT_UPDATE_MIN_DELAY() external view returns (uint256); function MIN_WEIGHT_UPDATE_MIN_DELAY() external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IConicPoolWeightManagement { struct PoolWeight { address poolAddress; uint256 weight; } function addPool(address pool) external; function removePool(address pool) external; function updateWeights(PoolWeight[] memory poolWeights) external; function handleDepeggedCurvePool(address curvePool_) external; function handleInvalidConvexPid(address pool) external returns (uint256); function allPools() external view returns (address[] memory); function poolsCount() external view returns (uint256); function getPoolAtIndex(uint256 _index) external view returns (address); function getWeight(address curvePool) external view returns (uint256); function getWeights() external view returns (PoolWeight[] memory); function isRegisteredPool(address _pool) external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "interfaces/IOracle.sol"; interface IGenericOracle is IOracle { /// @notice returns the oracle to be used to price `token` function getOracle(address token) external view returns (IOracle); /// @notice converts the price of an LP token to the given underlying function curveLpToUnderlying( address curveLpToken, address underlying, uint256 curveLpAmount ) external view returns (uint256); /// @notice same as above but avoids fetching the underlying price again function curveLpToUnderlying( address curveLpToken, address underlying, uint256 curveLpAmount, uint256 underlyingPrice ) external view returns (uint256); /// @notice converts the price an underlying asset to a given Curve LP token function underlyingToCurveLp( address underlying, address curveLpToken, uint256 underlyingAmount ) external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IInflationManager { event TokensClaimed(address indexed pool, uint256 cncAmount); event RebalancingRewardHandlerAdded(address indexed pool, address indexed handler); event RebalancingRewardHandlerRemoved(address indexed pool, address indexed handler); event PoolWeightsUpdated(); function executeInflationRateUpdate() external; function updatePoolWeights() external; /// @notice returns the weights of the Conic pools to know how much inflation /// each of them will receive, as well as the total amount of USD value in all the pools function computePoolWeights() external view returns (address[] memory _pools, uint256[] memory poolWeights, uint256 totalUSDValue); function computePoolWeight( address pool ) external view returns (uint256 poolWeight, uint256 totalUSDValue); function currentInflationRate() external view returns (uint256); function getCurrentPoolInflationRate(address pool) external view returns (uint256); function handleRebalancingRewards( address account, uint256 deviationBefore, uint256 deviationAfter ) external; function addPoolRebalancingRewardHandler( address poolAddress, address rebalancingRewardHandler ) external; function removePoolRebalancingRewardHandler( address poolAddress, address rebalancingRewardHandler ) external; function rebalancingRewardHandlers( address poolAddress ) external view returns (address[] memory); function hasPoolRebalancingRewardHandler( address poolAddress, address handler ) external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface ILpTokenStaker { event LpTokenStaked(address indexed account, uint256 amount); event LpTokenUnstaked(address indexed account, uint256 amount); event TokensClaimed(address indexed pool, uint256 cncAmount); event Shutdown(); function stake(uint256 amount, address conicPool) external; function unstake(uint256 amount, address conicPool) external; function stakeFor(uint256 amount, address conicPool, address account) external; function unstakeFor(uint256 amount, address conicPool, address account) external; function unstakeFrom(uint256 amount, address account) external; function getUserBalanceForPool( address conicPool, address account ) external view returns (uint256); function getBalanceForPool(address conicPool) external view returns (uint256); function updateBoost(address user) external; function claimCNCRewardsForPool(address pool) external; function claimableCnc(address pool) external view returns (uint256); function checkpoint(address pool) external returns (uint256); function shutdown() external; function getBoost(address user) external view returns (uint256); function isShutdown() external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IBonding { event CncStartPriceSet(uint256 startPrice); event PriceIncreaseFactorSet(uint256 factor); event MinBondingAmountSet(uint256 amount); event Bonded( address indexed account, address indexed recipient, uint256 lpTokenAmount, uint256 cncReceived, uint256 lockTime ); event DebtPoolSet(address indexed pool); event DebtPoolFeesClaimed(uint256 crvAmount, uint256 cvxAmount, uint256 cncAmount); event StreamClaimed(address indexed account, uint256 amount); event BondingStarted(uint256 amount, uint256 epochs); event RemainingCNCRecovered(uint256 amount); function startBonding() external; function setCncStartPrice(uint256 _cncStartPrice) external; function setCncPriceIncreaseFactor(uint256 _priceIncreaseFactor) external; function setMinBondingAmount(uint256 _minBondingAmount) external; function setDebtPool(address _debtPool) external; function bondCncCrvUsd( uint256 lpTokenAmount, uint256 minCncReceived, uint64 cncLockTime ) external returns (uint256); function recoverRemainingCNC() external; function claimStream() external; function claimFeesForDebtPool() external; function streamCheckpoint() external; function accountCheckpoint(address account) external; function computeCurrentCncBondPrice() external view returns (uint256); function cncAvailable() external view returns (uint256); function cncBondPrice() external view returns (uint256); function bondCncCrvUsdFor( uint256 lpTokenAmount, uint256 minCncReceived, uint64 cncLockTime, address recipient ) external returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IPoolAdapter { /// @notice This is to set which LP token price the value computation should use /// `Latest` uses a freshly computed price /// `Cached` uses the price in cache /// `Minimum` uses the minimum of these two enum PriceMode { Latest, Cached, Minimum } /// @notice Deposit `underlyingAmount` of `underlying` into `pool` /// @dev This function should be written with the assumption that it will be delegate-called into function deposit(address pool, address underlying, uint256 underlyingAmount) external; /// @notice Withdraw `underlyingAmount` of `underlying` from `pool` /// @dev This function should be written with the assumption that it will be delegate-called into function withdraw(address pool, address underlying, uint256 underlyingAmount) external; /// @notice Returns the amount of of assets that `conicPool` holds in `pool`, in terms of USD function computePoolValueInUSD( address conicPool, address pool ) external view returns (uint256 usdAmount); /// @notice Updates the price caches of the given pools function updatePriceCache(address pool) external; /// @notice Returns the amount of of assets that `conicPool` holds in `pool`, in terms of USD /// using the given price mode function computePoolValueInUSD( address conicPool, address pool, PriceMode priceMode ) external view returns (uint256 usdAmount); /// @notice Returns the amount of of assets that `conicPool` holds in `pool`, in terms of underlying function computePoolValueInUnderlying( address conicPool, address pool, address underlying, uint256 underlyingPrice ) external view returns (uint256 underlyingAmount); /// @notice Returns the amount of of assets that `conicPool` holds in `pool`, in terms of underlying /// using the given price mode function computePoolValueInUnderlying( address conicPool, address pool, address underlying, uint256 underlyingPrice, PriceMode priceMode ) external view returns (uint256 underlyingAmount); /// @notice Claim earnings of `conicPool` from `pool` function claimEarnings(address conicPool, address pool) external; /// @notice Returns the LP token of a given `pool` function lpToken(address pool) external view returns (address); /// @notice Returns true if `pool` supports `asset` function supportsAsset(address pool, address asset) external view returns (bool); /// @notice Returns the amount of CRV earned by `pool` on Convex function getCRVEarnedOnConvex( address account, address curvePool ) external view returns (uint256); /// @notice Executes a sanity check, e.g. checking for reentrancy function executeSanityCheck(address pool) external; /// @notice returns all the underlying coins of the pool function getAllUnderlyingCoins(address pool) external view returns (address[] memory); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IFeeRecipient { event FeesReceived(address indexed sender, uint256 crvAmount, uint256 cvxAmount); function receiveFees(uint256 amountCrv, uint256 amountCvx) external; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "interfaces/vendor/IBooster.sol"; import "libraries/CurvePoolUtils.sol"; import "libraries/Types.sol"; interface ICurveRegistryCache { event PoolInitialized(address indexed pool, uint256 indexed pid); function BOOSTER() external view returns (IBooster); function initPool(address pool_) external; function initPool(address pool_, uint256 pid_) external; function initPool(address pool_, Types.PoolInfo memory poolInfo_) external; function initPool(address pool_, uint256 pid_, Types.PoolInfo memory poolInfo_) external; function lpToken(address pool_) external view returns (address); function assetType(address pool_) external view returns (CurvePoolUtils.AssetType); function isRegistered(address pool_) external view returns (bool); function hasCoinDirectly(address pool_, address coin_) external view returns (bool); function hasCoinAnywhere(address pool_, address coin_) external view returns (bool); function basePool(address pool_) external view returns (address); function coinIndex(address pool_, address coin_) external view returns (int128); function nCoins(address pool_) external view returns (uint256); function coinIndices( address pool_, address from_, address to_ ) external view returns (int128, int128, bool); function decimals(address pool_) external view returns (uint256[] memory); function interfaceVersion(address pool_) external view returns (uint256); function poolFromLpToken(address lpToken_) external view returns (address); function coins(address pool_) external view returns (address[] memory); function getPid(address _pool) external view returns (uint256); function getRewardPool(address _pool) external view returns (address); function isShutdownPid(uint256 pid_) external view returns (bool); /// @notice this returns the underlying coins of a pool, including the underlying of the base pool /// if the given pool is a meta pool /// This does not return the LP token of the base pool as an underlying /// e.g. if the pool is 3CrvFrax, this will return FRAX, DAI, USDC, USDT function getAllUnderlyingCoins(address pool) external view returns (address[] memory); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.17; interface IBooster { function poolInfo( uint256 pid ) external view returns ( address lpToken, address token, address gauge, address crvRewards, address stash, bool shutdown ); function poolLength() external view returns (uint256); function deposit(uint256 _pid, uint256 _amount, bool _stake) external returns (bool); function withdraw(uint256 _pid, uint256 _amount) external returns (bool); function withdrawAll(uint256 _pid) external returns (bool); function depositAll(uint256 _pid, bool _stake) external returns (bool); function earmarkRewards(uint256 _pid) external returns (bool); function isShutdown() external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "interfaces/vendor/ICurvePoolV2.sol"; import "interfaces/vendor/ICurvePoolV1.sol"; import "libraries/ScaledMath.sol"; library CurvePoolUtils { using ScaledMath for uint256; error NotWithinThreshold(address pool, uint256 assetA, uint256 assetB); /// @dev by default, allow for 30 bps deviation regardless of pool fees uint256 internal constant _DEFAULT_IMBALANCE_BUFFER = 30e14; /// @dev Curve scales the `fee` by 1e10 uint8 internal constant _CURVE_POOL_FEE_DECIMALS = 10; /// @dev allow imbalance to be buffer + 3x the fee, e.g. if fee is 3.6 bps and buffer is 30 bps, allow 40.8 bps uint256 internal constant _FEE_IMBALANCE_MULTIPLIER = 3; enum AssetType { USD, ETH, BTC, OTHER, CRYPTO } struct PoolMeta { address pool; uint256 numberOfCoins; AssetType assetType; uint256[] decimals; uint256[] prices; uint256[] imbalanceBuffers; } function ensurePoolBalanced(PoolMeta memory poolMeta) internal view { uint256 poolFee = ICurvePoolV1(poolMeta.pool).fee().convertScale( _CURVE_POOL_FEE_DECIMALS, 18 ); for (uint256 i = 0; i < poolMeta.numberOfCoins - 1; i++) { uint256 fromDecimals = poolMeta.decimals[i]; uint256 fromBalance = 10 ** fromDecimals; uint256 fromPrice = poolMeta.prices[i]; for (uint256 j = i + 1; j < poolMeta.numberOfCoins; j++) { uint256 toDecimals = poolMeta.decimals[j]; uint256 toPrice = poolMeta.prices[j]; uint256 toExpectedUnscaled = (fromBalance * fromPrice) / toPrice; uint256 toExpected = toExpectedUnscaled.convertScale( uint8(fromDecimals), uint8(toDecimals) ); uint256 toActual; if (poolMeta.assetType == AssetType.CRYPTO) { // Handling crypto pools toActual = ICurvePoolV2(poolMeta.pool).get_dy(i, j, fromBalance); } else { // Handling other pools toActual = ICurvePoolV1(poolMeta.pool).get_dy( int128(uint128(i)), int128(uint128(j)), fromBalance ); } uint256 _maxImbalanceBuffer = poolMeta.imbalanceBuffers[i].max( poolMeta.imbalanceBuffers[j] ); if (!_isWithinThreshold(toExpected, toActual, poolFee, _maxImbalanceBuffer)) revert NotWithinThreshold(poolMeta.pool, i, j); } } } function _isWithinThreshold( uint256 a, uint256 b, uint256 poolFee, uint256 imbalanceBuffer ) internal pure returns (bool) { if (imbalanceBuffer == 0) imbalanceBuffer = _DEFAULT_IMBALANCE_BUFFER; uint256 imbalanceTreshold = imbalanceBuffer + poolFee * _FEE_IMBALANCE_MULTIPLIER; if (a > b) return (a - b).divDown(a) <= imbalanceTreshold; return (b - a).divDown(b) <= imbalanceTreshold; } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.17; interface ICurvePoolV2 { function token() external view returns (address); function coins(uint256 i) external view returns (address); function factory() external view returns (address); function exchange( uint256 i, uint256 j, uint256 dx, uint256 min_dy, bool use_eth, address receiver ) external returns (uint256); function exchange_underlying( uint256 i, uint256 j, uint256 dx, uint256 min_dy, address receiver ) external returns (uint256); function add_liquidity( uint256[2] memory amounts, uint256 min_mint_amount, bool use_eth, address receiver ) external returns (uint256); function add_liquidity( uint256[2] memory amounts, uint256 min_mint_amount ) external returns (uint256); function add_liquidity( uint256[3] memory amounts, uint256 min_mint_amount, bool use_eth, address receiver ) external returns (uint256); function add_liquidity( uint256[3] memory amounts, uint256 min_mint_amount ) external returns (uint256); function remove_liquidity( uint256 _amount, uint256[2] memory min_amounts, bool use_eth, address receiver ) external; function remove_liquidity(uint256 _amount, uint256[2] memory min_amounts) external; function remove_liquidity( uint256 _amount, uint256[3] memory min_amounts, bool use_eth, address receiver ) external; function remove_liquidity(uint256 _amount, uint256[3] memory min_amounts) external; function remove_liquidity_one_coin( uint256 token_amount, uint256 i, uint256 min_amount, bool use_eth, address receiver ) external returns (uint256); function get_dy(uint256 i, uint256 j, uint256 dx) external view returns (uint256); function calc_token_amount(uint256[] memory amounts) external view returns (uint256); function calc_withdraw_one_coin( uint256 token_amount, uint256 i ) external view returns (uint256); function get_virtual_price() external view returns (uint256); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.17; interface ICurvePoolV1 { function get_virtual_price() external view returns (uint256); function add_liquidity(uint256[8] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[7] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[6] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[5] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[4] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[3] calldata amounts, uint256 min_mint_amount) external; function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount) external; function remove_liquidity_imbalance( uint256[4] calldata amounts, uint256 max_burn_amount ) external; function remove_liquidity_imbalance( uint256[3] calldata amounts, uint256 max_burn_amount ) external; function remove_liquidity_imbalance( uint256[2] calldata amounts, uint256 max_burn_amount ) external; function lp_token() external view returns (address); function A_PRECISION() external view returns (uint256); function A_precise() external view returns (uint256); function remove_liquidity(uint256 _amount, uint256[3] calldata min_amounts) external; function exchange( int128 from, int128 to, uint256 _from_amount, uint256 _min_to_amount ) external; function coins(uint256 i) external view returns (address); function balances(uint256 i) external view returns (uint256); function get_dy(int128 i, int128 j, uint256 _dx) external view returns (uint256); function calc_token_amount( uint256[4] calldata amounts, bool deposit ) external view returns (uint256); function calc_token_amount( uint256[3] calldata amounts, bool deposit ) external view returns (uint256); function calc_token_amount( uint256[2] calldata amounts, bool deposit ) external view returns (uint256); function calc_withdraw_one_coin( uint256 _token_amount, int128 i ) external view returns (uint256); function remove_liquidity_one_coin( uint256 _token_amount, int128 i, uint256 min_amount ) external; function fee() external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; library ScaledMath { uint256 internal constant DECIMALS = 18; uint256 internal constant ONE = 10 ** DECIMALS; function mulDown(uint256 a, uint256 b) internal pure returns (uint256) { return (a * b) / ONE; } function mulDown(uint256 a, uint256 b, uint256 decimals) internal pure returns (uint256) { return (a * b) / (10 ** decimals); } function divDown(uint256 a, uint256 b) internal pure returns (uint256) { return (a * ONE) / b; } function divDown(uint256 a, uint256 b, uint256 decimals) internal pure returns (uint256) { return (a * 10 ** decimals) / b; } function divUp(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } return ((a * ONE) - 1) / b + 1; } function mulDown(int256 a, int256 b) internal pure returns (int256) { return (a * b) / int256(ONE); } function mulDownUint128(uint128 a, uint128 b) internal pure returns (uint128) { return (a * b) / uint128(ONE); } function mulDown(int256 a, int256 b, uint256 decimals) internal pure returns (int256) { return (a * b) / int256(10 ** decimals); } function divDown(int256 a, int256 b) internal pure returns (int256) { return (a * int256(ONE)) / b; } function divDownUint128(uint128 a, uint128 b) internal pure returns (uint128) { return (a * uint128(ONE)) / b; } function divDown(int256 a, int256 b, uint256 decimals) internal pure returns (int256) { return (a * int256(10 ** decimals)) / b; } function convertScale( uint256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (uint256) { if (fromDecimals == toDecimals) return a; if (fromDecimals > toDecimals) return downscale(a, fromDecimals, toDecimals); return upscale(a, fromDecimals, toDecimals); } function convertScale( int256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (int256) { if (fromDecimals == toDecimals) return a; if (fromDecimals > toDecimals) return downscale(a, fromDecimals, toDecimals); return upscale(a, fromDecimals, toDecimals); } function upscale( uint256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (uint256) { return a * (10 ** (toDecimals - fromDecimals)); } function downscale( uint256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (uint256) { return a / (10 ** (fromDecimals - toDecimals)); } function upscale( int256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (int256) { return a * int256(10 ** (toDecimals - fromDecimals)); } function downscale( int256 a, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (int256) { return a / int256(10 ** (fromDecimals - toDecimals)); } function intPow(uint256 a, uint256 n) internal pure returns (uint256) { uint256 result = ONE; for (uint256 i; i < n; ) { result = mulDown(result, a); unchecked { ++i; } } return result; } function absSub(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a >= b ? a - b : b - a; } } function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } function min(uint256 a, uint256 b) internal pure returns (uint256) { return a <= b ? a : b; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; library Types { struct Coin { address coinAddress; uint8 decimals; } struct CliffInfo { uint256 currentCliff; bool withinThreshold; } struct PoolInfo { address lpToken; address basePool; uint256 assetType; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "contracts/access/Ownable.sol"; import "interfaces/IController.sol"; interface IPausable { event Paused(uint256 pausedUntil); event PauseDurationSet(uint256 pauseDuration); function controller() external view returns (IController); function pausedUntil() external view returns (uint256); function pauseDuration() external view returns (uint256); function isPaused() external view returns (bool); function setPauseDuration(uint256 _pauseDuration) external; function pause() external; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "libraries/Types.sol"; interface IConvexHandler { function deposit(address _curvePool, uint256 _amount) external; function claimEarnings(address _curvePool, address _conicPool) external; function getRewardPool(address _curvePool) external view returns (address); function getCrvEarned(address _account, address _curvePool) external view returns (uint256); function getCrvEarnedBatch( address _account, address[] memory _curvePools ) external view returns (uint256); function computeClaimableConvex(uint256 crvAmount) external view returns (uint256); function computeClaimableConvexWithCliffInfo( uint256 crvAmount ) external view returns (uint256, Types.CliffInfo memory); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.17; interface UniswapRouter02 { function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external returns (uint256 amountIn); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external view returns (uint256 amountOut); function getAmountsIn( uint256 amountOut, address[] calldata path ) external view returns (uint256[] memory amounts); function getAmountsOut( uint256 amountIn, address[] memory path ) external view returns (uint256[] memory amounts); function getReserves( address factory, address tokenA, address tokenB ) external view returns (uint256 reserveA, uint256 reserveB); function WETH() external pure returns (address); } interface UniswapV2Pair { function getReserves() external view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast); } interface UniswapV2Factory { function getPair(address tokenA, address tokenB) external view returns (address pair); }
{ "evmVersion": "london", "optimizer": { "enabled": true, "runs": 200 }, "libraries": { "RewardManager.sol": {} }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_controller","type":"address"},{"internalType":"address","name":"_underlying","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"claimedCrv","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"claimedCvx","type":"uint256"}],"name":"ClaimedRewards","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimedBy","type":"address"},{"indexed":false,"internalType":"uint256","name":"cncEarned","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"crvEarned","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"cvxEarned","type":"uint256"}],"name":"EarningsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"reward","type":"address"}],"name":"ExtraRewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"reward","type":"address"}],"name":"ExtraRewardRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"extraReward","type":"address"},{"indexed":false,"internalType":"address","name":"curvePool","type":"address"}],"name":"ExtraRewardsCurvePoolSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"feePercentage","type":"uint256"}],"name":"FeesEnabled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"feePercentage","type":"uint256"}],"name":"FeesSet","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":"uint256","name":"targetTokenReceived","type":"uint256"}],"name":"SoldRewardTokens","type":"event"},{"inputs":[],"name":"CNC","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CNC_ETH_POOL","outputs":[{"internalType":"contract ICurvePoolV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CRV","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CVX","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FEE_PERCENTAGE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SLIPPAGE_THRESHOLD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SUSHISWAP","outputs":[{"internalType":"contract UniswapRouter02","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"accountCheckpoint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_rewards","type":"address[]"}],"name":"addBatchExtraRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"reward","type":"address"}],"name":"addExtraReward","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimEarnings","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimPoolEarningsAndSellRewardTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"claimableRewards","outputs":[{"internalType":"uint256","name":"cncRewards","type":"uint256"},{"internalType":"uint256","name":"crvRewards","type":"uint256"},{"internalType":"uint256","name":"cvxRewards","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"conicPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"controller","outputs":[{"internalType":"contract IController","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"extraRewardsCurvePool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feePercentage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feesEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_pool","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"listExtraRewards","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolCheckpoint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"removeExtraReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"extraReward_","type":"address"},{"internalType":"address","name":"curvePool_","type":"address"}],"name":"setExtraRewardsCurvePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_feePercentage","type":"uint256"}],"name":"setFeePercentage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"underlying","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000002790ec478f150a98f5d96755601a26403df57eae000000000000000000000000853d955acef822db058eb8505911ed77f175b99e
-----Decoded View---------------
Arg [0] : _controller (address): 0x2790EC478f150a98F5D96755601a26403DF57EaE
Arg [1] : _underlying (address): 0x853d955aCEf822Db058eb8505911ED77F175b99e
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000002790ec478f150a98f5d96755601a26403df57eae
Arg [1] : 000000000000000000000000853d955acef822db058eb8505911ed77f175b99e
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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.