ERC-721
Overview
Max Total Supply
0 SHER-POS
Holders
199
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
2 SHER-POSLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Sherlock
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 20000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC721/ERC721.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/security/Pausable.sol'; import './interfaces/ISherlock.sol'; /// @title Sherlock core interface for stakers /// @author Evert Kors // This is the contract that manages staking actions contract Sherlock is ISherlock, ERC721, Ownable, Pausable { using SafeERC20 for IERC20; // The minimal amount needed to mint a position uint256 public constant MIN_STAKE = 10**6; // 1 USDC // The initial period for a staker to restake/withdraw without being auto-restaked uint256 public constant ARB_RESTAKE_WAIT_TIME = 2 weeks; // The period during which the reward for restaking an account (after the inital period) grows uint256 public constant ARB_RESTAKE_GROWTH_TIME = 1 weeks; // Anyone who gets auto-restaked is restaked for this period (26 weeks) uint256 public constant ARB_RESTAKE_PERIOD = 26 weeks; // The percentage of someone's stake that can be paid to an arb for restaking uint256 public constant ARB_RESTAKE_MAX_PERCENTAGE = (10**18 / 100) * 20; // 20% // USDC address IERC20 public immutable token; // SHER token address IERC20 public immutable sher; // Key is the staking period (3 months, 6 months, etc.), value will be whether it is allowed or not mapping(uint256 => bool) public override stakingPeriods; // Key is a specific position ID (NFT ID), value represents the timestamp at which the position can be unstaked/restaked mapping(uint256 => uint256) internal lockupEnd_; // Key is NFT ID, value is the amount of SHER rewards owed to that NFT position mapping(uint256 => uint256) internal sherRewards_; // Key is NFT ID, value is the amount of shares representing the USDC owed to this position (includes principal, interest, etc.) mapping(uint256 => uint256) internal stakeShares; // Total amount of shares that have been issued to all NFT positions uint256 internal totalStakeShares; // Contract representing the current yield strategy (deposits staker funds into Aave, etc.) IStrategyManager public override yieldStrategy; // Instances of relevant Sherlock contracts ISherDistributionManager public override sherDistributionManager; ISherlockProtocolManager public override sherlockProtocolManager; ISherlockClaimManager public override sherlockClaimManager; // Address to which nonstaker payments are made // This will start out as a multi-sig address, then become a contract address later address public override nonStakersAddress; // Stores the ID of the most recently created NFT // This variable is incremented by 1 to create a new NFT ID uint256 internal nftCounter; string private constant baseURI = 'https://nft.sherlock.xyz/api/mainnet/'; // Even though `_sherDistributionManager` can be removed once deployed, every initial deployment will have an active instance. constructor( IERC20 _token, // USDC address IERC20 _sher, // SHER token address string memory _name, // Token collection name (see ERC-721 docs) string memory _symbol, // Token collection symbol (see ERC-721 docs) IStrategyManager _yieldStrategy, // The active yield strategy contract ISherDistributionManager _sherDistributionManager, // The active DistributionManager contract address _nonStakersAddress, // The address to which nonstakers payments go ISherlockProtocolManager _sherlockProtocolManager, // The address for the ProtocolManager contract ISherlockClaimManager _sherlockClaimManager, // The address for the ClaimManager contract uint256[] memory _initialstakingPeriods // The initial periods (3m, 6m, etc.) that someone can stake for ) ERC721(_name, _symbol) { if (address(_token) == address(0)) revert ZeroArgument(); if (address(_sher) == address(0)) revert ZeroArgument(); if (address(_yieldStrategy) == address(0)) revert ZeroArgument(); if (address(_sherDistributionManager) == address(0)) revert ZeroArgument(); if (_nonStakersAddress == address(0)) revert ZeroArgument(); if (address(_sherlockProtocolManager) == address(0)) revert ZeroArgument(); if (address(_sherlockClaimManager) == address(0)) revert ZeroArgument(); token = _token; sher = _sher; yieldStrategy = _yieldStrategy; sherDistributionManager = _sherDistributionManager; nonStakersAddress = _nonStakersAddress; sherlockProtocolManager = _sherlockProtocolManager; sherlockClaimManager = _sherlockClaimManager; // Enabling the first set of staking periods that were provided in constructor args for (uint256 i; i < _initialstakingPeriods.length; i++) { enableStakingPeriod(_initialstakingPeriods[i]); } emit YieldStrategyUpdated(IStrategyManager(address(0)), _yieldStrategy); emit SherDistributionManagerUpdated( ISherDistributionManager(address(0)), _sherDistributionManager ); emit NonStakerAddressUpdated(address(0), _nonStakersAddress); emit ProtocolManagerUpdated(ISherlockProtocolManager(address(0)), _sherlockProtocolManager); emit ClaimManagerUpdated(ISherlockClaimManager(address(0)), _sherlockClaimManager); } // // View functions // // Returns the timestamp at which the position represented by _tokenID can first be unstaked/restaked /// @notice View the current lockup end timestamp of `_tokenID` /// @return Timestamp when NFT position unlocks function lockupEnd(uint256 _tokenID) public view override returns (uint256) { if (!_exists(_tokenID)) revert NonExistent(); return lockupEnd_[_tokenID]; } // Returns the SHER rewards owed to this position /// @notice View the current SHER reward of `_tokenID` /// @return Amount of SHER rewarded to owner upon reaching the end of the lockup function sherRewards(uint256 _tokenID) public view override returns (uint256) { if (!_exists(_tokenID)) revert NonExistent(); return sherRewards_[_tokenID]; } // Returns the tokens (USDC) owed to a position /// @notice View the current token balance claimable upon reaching end of the lockup /// @return Amount of tokens assigned to owner when unstaking position function tokenBalanceOf(uint256 _tokenID) public view override returns (uint256) { if (!_exists(_tokenID)) revert NonExistent(); // Finds the fraction of total shares owed to this position and multiplies by the total amount of tokens (USDC) owed to stakers return (stakeShares[_tokenID] * totalTokenBalanceStakers()) / totalStakeShares; } // Gets the total amount of tokens (USDC) owed to stakers // Adds this contract's balance, the tokens in the yield strategy, and the claimable premiums in the protocol manager contract /// @notice View the current TVL for all stakers /// @return Total amount of tokens staked /// @dev Adds principal + strategy + premiums /// @dev Will calculate the most up to date value for each piece function totalTokenBalanceStakers() public view override returns (uint256) { return token.balanceOf(address(this)) + yieldStrategy.balanceOf() + sherlockProtocolManager.claimablePremiums(); } // // Gov functions // // Allows governance to add a new staking period (4 months, etc.) /// @notice Allows stakers to stake for `_period` of time /// @param _period Period of time, in seconds, /// @dev should revert if already enabled function enableStakingPeriod(uint256 _period) public override onlyOwner { if (_period == 0) revert ZeroArgument(); // Revert if staking period is already active if (stakingPeriods[_period]) revert InvalidArgument(); // Sets the staking period to true stakingPeriods[_period] = true; emit StakingPeriodEnabled(_period); } // Allows governance to remove a staking period (4 months, etc.) /// @notice Disallow stakers to stake for `_period` of time /// @param _period Period of time, in seconds, /// @dev should revert if already disabled function disableStakingPeriod(uint256 _period) external override onlyOwner { // Revert if staking period is already inactive if (!stakingPeriods[_period]) revert InvalidArgument(); // Sets the staking period to false stakingPeriods[_period] = false; emit StakingPeriodDisabled(_period); } // Sets a new contract to be the active SHER distribution manager /// @notice Update SHER distribution manager contract /// @param _sherDistributionManager New adddress of the manager /// @dev After updating the contract, call setSherlockCoreAddress() on the new contract function updateSherDistributionManager(ISherDistributionManager _sherDistributionManager) external override onlyOwner { if (address(_sherDistributionManager) == address(0)) revert ZeroArgument(); if (sherDistributionManager == _sherDistributionManager) revert InvalidArgument(); emit SherDistributionManagerUpdated(sherDistributionManager, _sherDistributionManager); sherDistributionManager = _sherDistributionManager; } /// @notice Deletes the SHER distribution manager altogether (if Sherlock decides to no longer pay out SHER rewards) function removeSherDistributionManager() external override onlyOwner { if (address(sherDistributionManager) == address(0)) revert InvalidConditions(); emit SherDistributionManagerUpdated( sherDistributionManager, ISherDistributionManager(address(0)) ); delete sherDistributionManager; } // Sets a new address for nonstakers payments /// @notice Update address eligible for non staker rewards from protocol premiums /// @param _nonStakers Address eligible for non staker rewards function updateNonStakersAddress(address _nonStakers) external override onlyOwner { if (address(_nonStakers) == address(0)) revert ZeroArgument(); if (nonStakersAddress == _nonStakers) revert InvalidArgument(); emit NonStakerAddressUpdated(nonStakersAddress, _nonStakers); nonStakersAddress = _nonStakers; } // Sets a new protocol manager contract /// @notice Transfer protocol manager implementation address /// @param _protocolManager new implementation address /// @dev After updating the contract, call setSherlockCoreAddress() on the new contract function updateSherlockProtocolManager(ISherlockProtocolManager _protocolManager) external override onlyOwner { if (address(_protocolManager) == address(0)) revert ZeroArgument(); if (sherlockProtocolManager == _protocolManager) revert InvalidArgument(); emit ProtocolManagerUpdated(sherlockProtocolManager, _protocolManager); sherlockProtocolManager = _protocolManager; } // Sets a new claim manager contract /// @notice Transfer claim manager role to different address /// @param _claimManager New address of claim manager /// @dev After updating the contract, call setSherlockCoreAddress() on the new contract function updateSherlockClaimManager(ISherlockClaimManager _claimManager) external override onlyOwner { if (address(_claimManager) == address(0)) revert ZeroArgument(); if (sherlockClaimManager == _claimManager) revert InvalidArgument(); emit ClaimManagerUpdated(sherlockClaimManager, _claimManager); sherlockClaimManager = _claimManager; } // Sets a new yield strategy manager contract /// @notice Update yield strategy /// @param _yieldStrategy New address of the strategy /// @dev Call will fail if underlying withdrawAll call fails /// @dev After updating the contract, call setSherlockCoreAddress() on the new contract function updateYieldStrategy(IStrategyManager _yieldStrategy) external override onlyOwner { if (address(_yieldStrategy) == address(0)) revert ZeroArgument(); if (yieldStrategy == _yieldStrategy) revert InvalidArgument(); yieldStrategy.withdrawAll(); emit YieldStrategyUpdated(yieldStrategy, _yieldStrategy); yieldStrategy = _yieldStrategy; } // Sets a new yield strategy manager contract /// @notice Update yield strategy ignoring state of current strategy /// @param _yieldStrategy New address of the strategy /// @dev tries a yieldStrategyWithdrawAll() on old strategy, ignore failure function updateYieldStrategyForce(IStrategyManager _yieldStrategy) external override onlyOwner { if (address(_yieldStrategy) == address(0)) revert ZeroArgument(); if (yieldStrategy == _yieldStrategy) revert InvalidArgument(); // This call is surrounded with a try catch as there is a non-zero chance the underlying yield protocol(s) will fail // For example; the Aave V2 withdraw can fail in case there is not enough liquidity available for whatever reason. // In case this happens. We still want the yield strategy to be updated. // As the worst case could be that the Aave V2 withdraw will never work again, forcing us to never use a yield strategy ever again. try yieldStrategy.withdrawAll() {} catch (bytes memory reason) { emit YieldStrategyUpdateWithdrawAllError(reason); } emit YieldStrategyUpdated(yieldStrategy, _yieldStrategy); yieldStrategy = _yieldStrategy; } // Deposits a chosen amount of tokens (USDC) into the active yield strategy /// @notice Deposit `_amount` into active strategy /// @param _amount Amount of tokens /// @dev gov only function yieldStrategyDeposit(uint256 _amount) external override onlyOwner { if (_amount == 0) revert ZeroArgument(); // Transfers any tokens owed to stakers from the protocol manager contract to this contract first sherlockProtocolManager.claimPremiumsForStakers(); // Transfers the amount of tokens to the yield strategy contract token.safeTransfer(address(yieldStrategy), _amount); // Deposits all tokens in the yield strategy contract into the actual yield strategy yieldStrategy.deposit(); } // Withdraws a chosen amount of tokens (USDC) from the yield strategy back into this contract /// @notice Withdraw `_amount` from active strategy /// @param _amount Amount of tokens /// @dev gov only function yieldStrategyWithdraw(uint256 _amount) external override onlyOwner { if (_amount == 0) revert ZeroArgument(); yieldStrategy.withdraw(_amount); } // Withdraws all tokens from the yield strategy back into this contract /// @notice Withdraw all funds from active strategy /// @dev gov only function yieldStrategyWithdrawAll() external override onlyOwner { yieldStrategy.withdrawAll(); } /// @notice Pause external functions in all contracts /// @dev A manager can still be replaced with a new contract in a `paused` state /// @dev To ensure we are still able to pause all contracts, we check if the manager is unpaused function pause() external onlyOwner { _pause(); if (!Pausable(address(yieldStrategy)).paused()) yieldStrategy.pause(); // sherDistributionManager can be 0, pause isn't needed in that case if ( address(sherDistributionManager) != address(0) && !Pausable(address(sherDistributionManager)).paused() ) { sherDistributionManager.pause(); } if (!Pausable(address(sherlockProtocolManager)).paused()) sherlockProtocolManager.pause(); if (!Pausable(address(sherlockClaimManager)).paused()) sherlockClaimManager.pause(); } /// @notice Unpause external functions in all contracts /// @dev A manager can still be replaced with a new contract in an `unpaused` state /// @dev To ensure we are still able to unpause all contracts, we check if the manager is paused function unpause() external onlyOwner { _unpause(); if (Pausable(address(yieldStrategy)).paused()) yieldStrategy.unpause(); // sherDistributionManager can be 0, unpause isn't needed in that case if ( address(sherDistributionManager) != address(0) && Pausable(address(sherDistributionManager)).paused() ) { sherDistributionManager.unpause(); } if (Pausable(address(sherlockProtocolManager)).paused()) sherlockProtocolManager.unpause(); if (Pausable(address(sherlockClaimManager)).paused()) sherlockClaimManager.unpause(); } // // Access control functions // function _beforeTokenTransfer( address _from, address _to, uint256 _tokenID ) internal override whenNotPaused {} function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // Transfers specified amount of tokens to the address specified by the claim creator (protocol agent) // This function is called by the Sherlock claim manager contract if a claim is approved /// @notice Initiate a payout of `_amount` to `_receiver` /// @param _receiver Receiver of payout /// @param _amount Amount to send /// @dev only payout manager should call this /// @dev should pull money out of strategy function payoutClaim(address _receiver, uint256 _amount) external override whenNotPaused { // Can only be called by the Sherlock claim manager contract if (msg.sender != address(sherlockClaimManager)) revert Unauthorized(); if (_amount != 0) { // Sends the amount of tokens to the receiver address (specified by the protocol agent who created the claim) _transferTokensOut(_receiver, _amount); } emit ClaimPayout(_receiver, _amount); } // // Non-access control functions // // Helper function for initial staking and restaking // Sets the unlock period, mints and transfers SHER tokens to this contract, assigns SHER tokens to this NFT position /// @notice Stakes `_amount` of tokens and locks up the `_id` position for `_period` seconds /// @param _amount Amount of tokens to stake /// @param _period Period of time for which funds get locked /// @param _id ID for this NFT position /// @param _receiver Address that will be linked to this position /// @return _sher Amount of SHER tokens awarded to this position after `_period` ends /// @dev `_period` needs to be whitelisted function _stake( uint256 _amount, uint256 _period, uint256 _id, address _receiver ) internal returns (uint256 _sher) { // Sets the timestamp at which this position can first be unstaked/restaked lockupEnd_[_id] = block.timestamp + _period; if (address(sherDistributionManager) == address(0)) return 0; // Does not allow restaking of 0 tokens if (_amount == 0) return 0; // Checks this amount of SHER tokens in this contract before we transfer new ones uint256 before = sher.balanceOf(address(this)); // pullReward() calcs then actually transfers the SHER tokens to this contract // in case this call fails, whole (re)staking transaction fails _sher = sherDistributionManager.pullReward(_amount, _period, _id, _receiver); // actualAmount should represent the amount of SHER tokens transferred to this contract for the current stake position uint256 actualAmount = sher.balanceOf(address(this)) - before; if (actualAmount != _sher) revert InvalidSherAmount(_sher, actualAmount); // Assigns the newly created SHER tokens to the current stake position if (_sher != 0) sherRewards_[_id] = _sher; } // Checks to see if the NFT owner is the caller and that the position is unlockable function _verifyUnlockableByOwner(uint256 _id) internal view { if (ownerOf(_id) != msg.sender) revert Unauthorized(); if (lockupEnd_[_id] > block.timestamp) revert InvalidConditions(); } // Sends the SHER tokens associated with this NFT ID to the address of the NFT owner function _sendSherRewardsToOwner(uint256 _id, address _nftOwner) internal { uint256 sherReward = sherRewards_[_id]; if (sherReward == 0) return; // Deletes the SHER reward mapping for this NFT ID delete sherRewards_[_id]; // Transfers the SHER tokens associated with this NFT ID to the address of the NFT owner sher.safeTransfer(_nftOwner, sherReward); } // Transfers an amount of tokens to the receiver address // This is the logic for a payout AND for an unstake (used by the payoutClaim() function above and in _redeemShares() below) function _transferTokensOut(address _receiver, uint256 _amount) internal { // Transfers any premiums owed to stakers from the protocol manager to this contract sherlockProtocolManager.claimPremiumsForStakers(); // The amount of tokens in this contract uint256 mainBalance = token.balanceOf(address(this)); // If the amount to transfer out is still greater than the amount of tokens in this contract, // Withdraw yield strategy tokens to make up the difference if (_amount > mainBalance) { yieldStrategy.withdraw(_amount - mainBalance); } token.safeTransfer(_receiver, _amount); } // Returns the amount of USDC owed to this amount of stakeShares function _redeemSharesCalc(uint256 _stakeShares) internal view returns (uint256) { // Finds fraction that the given amount of stakeShares represents of the total // Then multiplies it by the total amount of tokens (USDC) owed to all stakers return (_stakeShares * totalTokenBalanceStakers()) / totalStakeShares; } // Transfers USDC to the receiver (arbitrager OR NFT owner) based on the stakeShares inputted // Also burns the requisite amount of shares associated with this NFT position // Returns the amount of USDC owed to these shares function _redeemShares( uint256 _id, uint256 _stakeShares, address _receiver ) internal returns (uint256 _amount) { // Returns the amount of USDC owed to this amount of stakeShares _amount = _redeemSharesCalc(_stakeShares); // Transfers _amount of tokens to _receiver address if (_amount != 0) _transferTokensOut(_receiver, _amount); // Subtracts this amount of stakeShares from the NFT position stakeShares[_id] -= _stakeShares; // Subtracts this amount of stakeShares from the total amount of stakeShares outstanding totalStakeShares -= _stakeShares; } // Helper function to restake an eligible NFT position on behalf of the NFT owner OR an arbitrager // Restakes an NFT position (_id) for a given period (_period) and // Sends any previously earned SHER rewards to the _nftOwner address function _restake( uint256 _id, uint256 _period, address _nftOwner ) internal returns (uint256 _sher) { // Sends the SHER tokens previously earned by this NFT ID to the address of the NFT owner // NOTE This function deletes the SHER reward mapping for this NFT ID _sendSherRewardsToOwner(_id, _nftOwner); // tokenBalanceOf() returns the USDC amount owed to this NFT ID // _stake() restakes that amount of USDC for the period inputted // We use the same ID that we just deleted the SHER rewards mapping for // Resets the lockupEnd mapping and SHER token rewards mapping for this ID // Note stakeShares for this position do not change so no need to update _sher = _stake(tokenBalanceOf(_id), _period, _id, _nftOwner); emit Restaked(_id); } // This function is called in the UI by anyone who is staking for the first time (not restaking a previous position) /// @notice Stakes `_amount` of tokens and locks up for `_period` seconds, `_receiver` will receive the NFT receipt /// @param _amount Amount of tokens to stake /// @param _period Period of time, in seconds, to lockup your funds /// @param _receiver Address that will receive the NFT representing the position /// @return _id ID of the position /// @return _sher Amount of SHER tokens to be released to this ID after `_period` ends /// @dev `_period` needs to be whitelisted function initialStake( uint256 _amount, uint256 _period, address _receiver ) external override whenNotPaused returns (uint256 _id, uint256 _sher) { if (_amount == 0) revert ZeroArgument(); if (_amount < MIN_STAKE) revert InvalidArgument(); // Makes sure the period is a whitelisted period if (!stakingPeriods[_period]) revert InvalidArgument(); if (address(_receiver) == address(0)) revert ZeroArgument(); // Adds 1 to the ID of the last NFT created for the new NFT ID _id = ++nftCounter; // Transfers the USDC from the msg.sender to this contract for the amount specified (this is the staking action) token.safeTransferFrom(msg.sender, address(this), _amount); uint256 stakeShares_; uint256 totalStakeShares_ = totalStakeShares; // _amount of tokens divided by the "before" total amount of tokens, multiplied by the "before" amount of stake shares if (totalStakeShares_ != 0) stakeShares_ = (_amount * totalStakeShares_) / (totalTokenBalanceStakers() - _amount); // If this is the first stake ever, we just mint stake shares equal to the amount of USDC staked else stakeShares_ = _amount; // Assigns this NFT ID the calc'd amount of stake shares above stakeShares[_id] = stakeShares_; // Adds the newly created stake shares to the total amount of stake shares totalStakeShares += stakeShares_; // Locks up the USDC amount and calcs the SHER token amount to receive on unstake _sher = _stake(_amount, _period, _id, _receiver); // This is an ERC-721 function that creates an NFT and sends it to the receiver _safeMint(_receiver, _id); } // This is how a staker unstakes and cashes out on their position /// @notice Redeem NFT `_id` and receive `_amount` of tokens /// @param _id TokenID of the position /// @return _amount Amount of tokens (USDC) owed to NFT ID /// @dev Only the owner of `_id` will be able to redeem their position /// @dev The SHER rewards are sent to the NFT owner /// @dev Can only be called after lockup `_period` has ended function redeemNFT(uint256 _id) external override whenNotPaused returns (uint256 _amount) { // Checks to make sure caller is the owner of the NFT position, and that the lockup period is over _verifyUnlockableByOwner(_id); // This is the ERC-721 function to destroy an NFT (with owner's approval) _burn(_id); // Transfers USDC to the NFT owner based on the stake shares associated with this NFT ID // Also burns the requisite amount of shares associated with this NFT position // Returns the amount of USDC owed to these shares _amount = _redeemShares(_id, stakeShares[_id], msg.sender); // Sends the SHER tokens associated with this NFT ID to the NFT owner _sendSherRewardsToOwner(_id, msg.sender); // Removes the unlock deadline associated with this NFT delete lockupEnd_[_id]; } // This is how a staker restakes an expired position /// @notice Owner restakes position with ID: `_id` for `_period` seconds /// @param _id ID of the position /// @param _period Period of time, in seconds, to lockup your funds /// @return _sher Amount of SHER tokens to be released to owner address after `_period` ends /// @dev Only the owner of `_id` will be able to restake their position using this call /// @dev `_period` needs to be whitelisted /// @dev Can only be called after lockup `_period` has ended function ownerRestake(uint256 _id, uint256 _period) external override whenNotPaused returns (uint256 _sher) { // Checks to make sure caller is the owner of the NFT position, and that the lockup period is over _verifyUnlockableByOwner(_id); // Checks to make sure the staking period is a whitelisted one if (!stakingPeriods[_period]) revert InvalidArgument(); // Sends the previously earned SHER token rewards to the owner and restakes the USDC value of the position _sher = _restake(_id, _period, msg.sender); } // Calcs the reward (in stake shares) an arb would get for restaking a position // Takes the NFT ID as a param and outputs the stake shares (which can be redeemed for USDC) for the arb function _calcSharesForArbRestake(uint256 _id) internal view returns (uint256, bool) { // this is the first point at which an arb can restake a position (i.e. two weeks after the initial lockup ends) uint256 initialArbTime = lockupEnd_[_id] + ARB_RESTAKE_WAIT_TIME; // If the initialArbTime has not passed, return 0 for the stake shares and false for whether an arb can restake the position if (initialArbTime > block.timestamp) return (0, false); // The max rewards (as a % of the position's shares) for the arb are available at this timestamp uint256 maxRewardArbTime = initialArbTime + ARB_RESTAKE_GROWTH_TIME; // Caps the timestamp at the maxRewardArbTime so the calc below never goes above 100% uint256 targetTime = block.timestamp < maxRewardArbTime ? block.timestamp : maxRewardArbTime; // Scaled by 10**18 // Represents the max amount of stake shares that an arb could get from restaking this position uint256 maxRewardScaled = ARB_RESTAKE_MAX_PERCENTAGE * stakeShares[_id]; // Calcs what % of the max reward an arb gets based on the timestamp at which they call this function // If targetTime == maxRewardArbTime, then the arb gets 100% of the maxRewardScaled return ( ((targetTime - initialArbTime) * maxRewardScaled) / (ARB_RESTAKE_GROWTH_TIME) / 10**18, true ); } /// @notice Calculates the reward in tokens (USDC) that an arb would get for calling restake on a position /// @return profit How much profit an arb would make in USDC /// @return able If the transaction can be executed (the current timestamp is during an arb period, etc.) function viewRewardForArbRestake(uint256 _id) external view returns (uint256 profit, bool able) { if (!_exists(_id)) revert NonExistent(); // Returns the stake shares that an arb would get, and whether the position can currently be arbed // `profit` variable is used to store the amount of shares (profit, able) = _calcSharesForArbRestake(_id); // Calculates the tokens (USDC) represented by that amount of stake shares // Amount of shares stored in `profit` is used to calculate the reward in USDC, which is stored in `profit` profit = _redeemSharesCalc(profit); } /// @notice Allows someone who doesn't own the position (an arbitrager) to restake the position for 26 weeks (ARB_RESTAKE_PERIOD) /// @param _id ID of the position /// @return _sher Amount of SHER tokens to be released to position owner on expiry of the 26 weeks lockup /// @return _arbReward Amount of tokens (USDC) sent to caller (the arbitrager) in return for calling the function /// @dev Can only be called after lockup `_period` is more than 2 weeks in the past (assuming ARB_RESTAKE_WAIT_TIME is 2 weeks) /// @dev Max 20% (ARB_RESTAKE_MAX_PERCENTAGE) of tokens associated with a position are used to incentivize arbs (x) /// @dev During a 2 week period the reward ratio will move from 0% to 100% (* x) function arbRestake(uint256 _id) external override whenNotPaused returns (uint256 _sher, uint256 _arbReward) { address nftOwner = ownerOf(_id); // Returns the stake shares that an arb would get, and whether the position can currently be arbed (uint256 arbRewardShares, bool able) = _calcSharesForArbRestake(_id); // Revert if not able to be arbed if (!able) revert InvalidConditions(); // Transfers USDC to the arbitrager based on the stake shares associated with the arb reward // Also burns the requisite amount of shares associated with this NFT position // Returns the amount of USDC paid to the arbitrager _arbReward = _redeemShares(_id, arbRewardShares, msg.sender); // Restakes the tokens (USDC) associated with this position for the ARB_RESTAKE_PERIOD (26 weeks) // Sends previously earned SHER rewards to the NFT owner address _sher = _restake(_id, ARB_RESTAKE_PERIOD, nftOwner); emit ArbRestaked(_id, _arbReward); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../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 Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import '@openzeppelin/contracts/token/ERC721/IERC721.sol'; import './ISherlockStake.sol'; import './ISherlockGov.sol'; import './ISherlockPayout.sol'; import './ISherlockStrategy.sol'; interface ISherlock is ISherlockStake, ISherlockGov, ISherlockPayout, ISherlockStrategy, IERC721 { // msg.sender is not authorized to call this function error Unauthorized(); // An address or other value passed in is equal to zero (and shouldn't be) error ZeroArgument(); // Occurs when a value already holds the desired property, or is not whitelisted error InvalidArgument(); // Required conditions are not true/met error InvalidConditions(); // If the SHER tokens held in a contract are not the value they are supposed to be error InvalidSherAmount(uint256 expected, uint256 actual); // Checks the ERC-721 functions _exists() to see if an NFT ID actually exists and errors if not error NonExistent(); event ArbRestaked(uint256 indexed tokenID, uint256 reward); event Restaked(uint256 indexed tokenID); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // 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 v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ /// @title Sherlock core interface for stakers /// @author Evert Kors interface ISherlockStake { /// @notice View the current lockup end timestamp of `_tokenID` /// @return Timestamp when NFT position unlocks function lockupEnd(uint256 _tokenID) external view returns (uint256); /// @notice View the current SHER reward of `_tokenID` /// @return Amount of SHER rewarded to owner upon reaching the end of the lockup function sherRewards(uint256 _tokenID) external view returns (uint256); /// @notice View the current token balance claimable upon reaching end of the lockup /// @return Amount of tokens assigned to owner when unstaking position function tokenBalanceOf(uint256 _tokenID) external view returns (uint256); /// @notice View the current TVL for all stakers /// @return Total amount of tokens staked /// @dev Adds principal + strategy + premiums /// @dev Will calculate the most up to date value for each piece function totalTokenBalanceStakers() external view returns (uint256); /// @notice Stakes `_amount` of tokens and locks up for `_period` seconds, `_receiver` will receive the NFT receipt /// @param _amount Amount of tokens to stake /// @param _period Period of time, in seconds, to lockup your funds /// @param _receiver Address that will receive the NFT representing the position /// @return _id ID of the position /// @return _sher Amount of SHER tokens to be released to this ID after `_period` ends /// @dev `_period` needs to be whitelisted function initialStake( uint256 _amount, uint256 _period, address _receiver ) external returns (uint256 _id, uint256 _sher); /// @notice Redeem NFT `_id` and receive `_amount` of tokens /// @param _id TokenID of the position /// @return _amount Amount of tokens (USDC) owed to NFT ID /// @dev Only the owner of `_id` will be able to redeem their position /// @dev The SHER rewards are sent to the NFT owner /// @dev Can only be called after lockup `_period` has ended function redeemNFT(uint256 _id) external returns (uint256 _amount); /// @notice Owner restakes position with ID: `_id` for `_period` seconds /// @param _id ID of the position /// @param _period Period of time, in seconds, to lockup your funds /// @return _sher Amount of SHER tokens to be released to owner address after `_period` ends /// @dev Only the owner of `_id` will be able to restake their position using this call /// @dev `_period` needs to be whitelisted /// @dev Can only be called after lockup `_period` has ended function ownerRestake(uint256 _id, uint256 _period) external returns (uint256 _sher); /// @notice Allows someone who doesn't own the position (an arbitrager) to restake the position for 26 weeks (ARB_RESTAKE_PERIOD) /// @param _id ID of the position /// @return _sher Amount of SHER tokens to be released to position owner on expiry of the 26 weeks lockup /// @return _arbReward Amount of tokens (USDC) sent to caller (the arbitrager) in return for calling the function /// @dev Can only be called after lockup `_period` is more than 2 weeks in the past (assuming ARB_RESTAKE_WAIT_TIME is 2 weeks) /// @dev Max 20% (ARB_RESTAKE_MAX_PERCENTAGE) of tokens associated with a position are used to incentivize arbs (x) /// @dev During a 2 week period the reward ratio will move from 0% to 100% (* x) function arbRestake(uint256 _id) external returns (uint256 _sher, uint256 _arbReward); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import './managers/ISherDistributionManager.sol'; import './managers/ISherlockProtocolManager.sol'; import './managers/ISherlockClaimManager.sol'; import './managers/IStrategyManager.sol'; /// @title Sherlock core interface for governance /// @author Evert Kors interface ISherlockGov { event ClaimPayout(address receiver, uint256 amount); event YieldStrategyUpdateWithdrawAllError(bytes error); event YieldStrategyUpdated(IStrategyManager previous, IStrategyManager current); event ProtocolManagerUpdated(ISherlockProtocolManager previous, ISherlockProtocolManager current); event ClaimManagerUpdated(ISherlockClaimManager previous, ISherlockClaimManager current); event NonStakerAddressUpdated(address previous, address current); event SherDistributionManagerUpdated( ISherDistributionManager previous, ISherDistributionManager current ); event StakingPeriodEnabled(uint256 period); event StakingPeriodDisabled(uint256 period); /// @notice Allows stakers to stake for `_period` of time /// @param _period Period of time, in seconds, /// @dev should revert if already enabled function enableStakingPeriod(uint256 _period) external; /// @notice Disallow stakers to stake for `_period` of time /// @param _period Period of time, in seconds, /// @dev should revert if already disabled function disableStakingPeriod(uint256 _period) external; /// @notice View if `_period` is a valid period /// @return Boolean indicating if period is valid function stakingPeriods(uint256 _period) external view returns (bool); /// @notice Update SHER distribution manager contract /// @param _sherDistributionManager New adddress of the manager function updateSherDistributionManager(ISherDistributionManager _sherDistributionManager) external; /// @notice Deletes the SHER distribution manager altogether (if Sherlock decides to no longer pay out SHER rewards) function removeSherDistributionManager() external; /// @notice Read SHER distribution manager /// @return Address of current SHER distribution manager function sherDistributionManager() external view returns (ISherDistributionManager); /// @notice Update address eligible for non staker rewards from protocol premiums /// @param _nonStakers Address eligible for non staker rewards function updateNonStakersAddress(address _nonStakers) external; /// @notice View current non stakers address /// @return Current non staker address /// @dev Is able to pull funds out of the contract function nonStakersAddress() external view returns (address); /// @notice View current address able to manage protocols /// @return Protocol manager implemenation function sherlockProtocolManager() external view returns (ISherlockProtocolManager); /// @notice Transfer protocol manager implementation address /// @param _protocolManager new implementation address function updateSherlockProtocolManager(ISherlockProtocolManager _protocolManager) external; /// @notice View current address able to pull payouts /// @return Address able to pull payouts function sherlockClaimManager() external view returns (ISherlockClaimManager); /// @notice Transfer claim manager role to different address /// @param _claimManager New address of claim manager function updateSherlockClaimManager(ISherlockClaimManager _claimManager) external; /// @notice Update yield strategy /// @param _yieldStrategy New address of the strategy /// @dev try a yieldStrategyWithdrawAll() on old, ignore failure function updateYieldStrategy(IStrategyManager _yieldStrategy) external; /// @notice Update yield strategy ignoring current state /// @param _yieldStrategy New address of the strategy /// @dev tries a yieldStrategyWithdrawAll() on old strategy, ignore failure function updateYieldStrategyForce(IStrategyManager _yieldStrategy) external; /// @notice Read current strategy /// @return Address of current strategy /// @dev can never be address(0) function yieldStrategy() external view returns (IStrategyManager); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ /// @title Sherlock interface for payout manager /// @author Evert Kors interface ISherlockPayout { /// @notice Initiate a payout of `_amount` to `_receiver` /// @param _receiver Receiver of payout /// @param _amount Amount to send /// @dev only payout manager should call this /// @dev should pull money out of strategy function payoutClaim(address _receiver, uint256 _amount) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import './managers/IStrategyManager.sol'; /// @title Sherlock core interface for yield strategy /// @author Evert Kors interface ISherlockStrategy { /// @notice Deposit `_amount` into active strategy /// @param _amount Amount of tokens /// @dev gov only function yieldStrategyDeposit(uint256 _amount) external; /// @notice Withdraw `_amount` from active strategy /// @param _amount Amount of tokens /// @dev gov only function yieldStrategyWithdraw(uint256 _amount) external; /// @notice Withdraw all funds from active strategy /// @dev gov only function yieldStrategyWithdrawAll() external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './IManager.sol'; interface ISherDistributionManager is IManager { // anyone can just send token to this contract to fund rewards event Initialized(uint256 maxRewardsEndTVL, uint256 zeroRewardsStartTVL, uint256 maxRewardRate); /// @notice Caller will receive `_sher` SHER tokens based on `_amount` and `_period` /// @param _amount Amount of tokens (in USDC) staked /// @param _period Period of time for stake, in seconds /// @param _id ID for this NFT position /// @param _receiver Address that will be linked to this position /// @return _sher Amount of SHER tokens sent to Sherlock core contract /// @dev Calling contract will depend on before + after balance diff and return value /// @dev INCLUDES stake in calculation, function expects the `_amount` to be deposited already /// @dev If tvl=50 and amount=50, this means it is calculating SHER rewards for the first 50 tokens going in function pullReward( uint256 _amount, uint256 _period, uint256 _id, address _receiver ) external returns (uint256 _sher); /// @notice Calculates how many `_sher` SHER tokens are owed to a stake position based on `_amount` and `_period` /// @param _tvl TVL to use for reward calculation (pre-stake TVL) /// @param _amount Amount of tokens (USDC) staked /// @param _period Stake period (in seconds) /// @return _sher Amount of SHER tokens owed to this stake position /// @dev EXCLUDES `_amount` of stake, this will be added on top of TVL (_tvl is excluding _amount) /// @dev If tvl=0 and amount=50, it would calculate for the first 50 tokens going in (different from pullReward()) function calcReward( uint256 _tvl, uint256 _amount, uint256 _period ) external view returns (uint256 _sher); /// @notice Function used to check if this is the current active distribution manager /// @return Boolean indicating it's active /// @dev If inactive the owner can pull all ERC20s and ETH /// @dev Will be checked by calling the sherlock contract function isActive() external view returns (bool); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import './IManager.sol'; /// @title Sherlock core interface for protocols /// @author Evert Kors interface ISherlockProtocolManager is IManager { // msg.sender is not authorized to call this function error Unauthorized(); // If a protocol was never instantiated or was removed and the claim deadline has passed, this error is returned error ProtocolNotExists(bytes32 protocol); // When comparing two arrays and the lengths are not equal (but are supposed to be equal) error UnequalArrayLength(); // If there is not enough balance in the contract for the amount requested (after any requirements are met), this is returned error InsufficientBalance(bytes32 protocol); event MinBalance(uint256 previous, uint256 current); event AccountingError(bytes32 indexed protocol, uint256 amount, uint256 insufficientTokens); event ProtocolAdded(bytes32 indexed protocol); event ProtocolRemovedByArb(bytes32 indexed protocol, address arb, uint256 profit); event ProtocolRemoved(bytes32 indexed protocol); event ProtocolUpdated( bytes32 indexed protocol, bytes32 coverage, uint256 nonStakers, uint256 coverageAmount ); event ProtocolAgentTransfer(bytes32 indexed protocol, address from, address to); event ProtocolBalanceDeposited(bytes32 indexed protocol, uint256 amount); event ProtocolBalanceWithdrawn(bytes32 indexed protocol, uint256 amount); event ProtocolPremiumChanged(bytes32 indexed protocol, uint256 oldPremium, uint256 newPremium); /// @notice View current amount of all premiums that are owed to stakers /// @return Premiums claimable /// @dev Will increase every block /// @dev base + (now - last_settled) * ps function claimablePremiums() external view returns (uint256); /// @notice Transfer current claimable premiums (for stakers) to core Sherlock address /// @dev Callable by everyone /// @dev Funds will be transferred to Sherlock core contract function claimPremiumsForStakers() external; /// @notice View current protocolAgent of `_protocol` /// @param _protocol Protocol identifier /// @return Address able to submit claims function protocolAgent(bytes32 _protocol) external view returns (address); /// @notice View current premium of protocol /// @param _protocol Protocol identifier /// @return Amount of premium `_protocol` pays per second function premium(bytes32 _protocol) external view returns (uint256); /// @notice View current active balance of covered protocol /// @param _protocol Protocol identifier /// @return Active balance /// @dev Accrued debt is subtracted from the stored active balance function activeBalance(bytes32 _protocol) external view returns (uint256); /// @notice View seconds of coverage left for `_protocol` before it runs out of active balance /// @param _protocol Protocol identifier /// @return Seconds of coverage left function secondsOfCoverageLeft(bytes32 _protocol) external view returns (uint256); /// @notice Add a new protocol to Sherlock /// @param _protocol Protocol identifier /// @param _protocolAgent Address able to submit a claim on behalf of the protocol /// @param _coverage Hash referencing the active coverage agreement /// @param _nonStakers Percentage of premium payments to nonstakers, scaled by 10**18 /// @param _coverageAmount Max amount claimable by this protocol /// @dev Adding a protocol allows the `_protocolAgent` to submit a claim /// @dev Coverage is not started yet as the protocol doesn't pay a premium at this point /// @dev `_nonStakers` is scaled by 10**18 /// @dev Only callable by governance function protocolAdd( bytes32 _protocol, address _protocolAgent, bytes32 _coverage, uint256 _nonStakers, uint256 _coverageAmount ) external; /// @notice Update info regarding a protocol /// @param _protocol Protocol identifier /// @param _coverage Hash referencing the active coverage agreement /// @param _nonStakers Percentage of premium payments to nonstakers, scaled by 10**18 /// @param _coverageAmount Max amount claimable by this protocol /// @dev Only callable by governance function protocolUpdate( bytes32 _protocol, bytes32 _coverage, uint256 _nonStakers, uint256 _coverageAmount ) external; /// @notice Remove a protocol from coverage /// @param _protocol Protocol identifier /// @dev Before removing a protocol the premium must be 0 /// @dev Removing a protocol basically stops the `_protocolAgent` from being active (can still submit claims until claim deadline though) /// @dev Pays off debt + sends remaining balance to protocol agent /// @dev This call should be subject to a timelock /// @dev Only callable by governance function protocolRemove(bytes32 _protocol) external; /// @notice Remove a protocol with insufficient active balance /// @param _protocol Protocol identifier function forceRemoveByActiveBalance(bytes32 _protocol) external; /// @notice Removes a protocol with insufficent seconds of coverage left /// @param _protocol Protocol identifier function forceRemoveBySecondsOfCoverage(bytes32 _protocol) external; /// @notice View minimal balance needed before liquidation can start /// @return Minimal balance needed function minActiveBalance() external view returns (uint256); /// @notice Sets the minimum active balance before an arb can remove a protocol /// @param _minActiveBalance Minimum balance needed (in USDC) /// @dev Only gov function setMinActiveBalance(uint256 _minActiveBalance) external; /// @notice Set premium of `_protocol` to `_premium` /// @param _protocol Protocol identifier /// @param _premium Amount of premium `_protocol` pays per second /// @dev The value 0 would mean inactive coverage /// @dev Only callable by governance function setProtocolPremium(bytes32 _protocol, uint256 _premium) external; /// @notice Set premium of multiple protocols /// @param _protocol Array of protocol identifiers /// @param _premium Array of premium amounts protocols pay per second /// @dev The value 0 would mean inactive coverage /// @dev Only callable by governance function setProtocolPremiums(bytes32[] calldata _protocol, uint256[] calldata _premium) external; /// @notice Deposits `_amount` of token to the active balance of `_protocol` /// @param _protocol Protocol identifier /// @param _amount Amount of tokens to deposit /// @dev Approval should be made before calling function depositToActiveBalance(bytes32 _protocol, uint256 _amount) external; /// @notice Withdraws `_amount` of token from the active balance of `_protocol` /// @param _protocol Protocol identifier /// @param _amount Amount of tokens to withdraw /// @dev Only protocol agent is able to withdraw /// @dev Balance can be withdrawn up until 7 days worth of active balance function withdrawActiveBalance(bytes32 _protocol, uint256 _amount) external; /// @notice Transfer protocol agent role /// @param _protocol Protocol identifier /// @param _protocolAgent Account able to submit a claim on behalf of the protocol /// @dev Only the active protocolAgent is able to transfer the role function transferProtocolAgent(bytes32 _protocol, address _protocolAgent) external; /// @notice View the amount nonstakers can claim from this protocol /// @param _protocol Protocol identifier /// @return Amount of tokens claimable by nonstakers /// @dev this reads from a storage variable + (now-lastsettled) * premiums function nonStakersClaimable(bytes32 _protocol) external view returns (uint256); /// @notice Choose an `_amount` of tokens that nonstakers (`_receiver` address) will receive from `_protocol` /// @param _protocol Protocol identifier /// @param _amount Amount of tokens /// @param _receiver Address to receive tokens /// @dev Only callable by nonstakers role function nonStakersClaim( bytes32 _protocol, uint256 _amount, address _receiver ) external; /// @param _protocol Protocol identifier /// @return current and previous are the current and previous coverage amounts for this protocol function coverageAmounts(bytes32 _protocol) external view returns (uint256 current, uint256 previous); /// @notice Function used to check if this is the current active protocol manager /// @return Boolean indicating it's active /// @dev If inactive the owner can pull all ERC20s and ETH /// @dev Will be checked by calling the sherlock contract function isActive() external view returns (bool); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './callbacks/ISherlockClaimManagerCallbackReceiver.sol'; import '../UMAprotocol/OptimisticRequester.sol'; import './IManager.sol'; interface ISherlockClaimManager is IManager, OptimisticRequester { // Doesn't allow a new claim to be submitted by a protocol agent if a claim is already active for that protocol error ClaimActive(); // If the current state of a claim does not match the expected state, this error is thrown error InvalidState(); event ClaimCreated( uint256 claimID, bytes32 indexed protocol, uint256 amount, address receiver, bool previousCoverageUsed ); event CallbackAdded(ISherlockClaimManagerCallbackReceiver callback); event CallbackRemoved(ISherlockClaimManagerCallbackReceiver callback); event ClaimStatusChanged(uint256 indexed claimID, State previousState, State currentState); event ClaimPayout(uint256 claimID, address receiver, uint256 amount); event ClaimHalted(uint256 claimID); event UMAHORenounced(); enum State { NonExistent, // Claim doesn't exist (this is the default state on creation) SpccPending, // Claim is created, SPCC is able to set state to valid SpccApproved, // Final state, claim is valid SpccDenied, // Claim denied by SPCC, claim can be escalated within 4 weeks UmaPriceProposed, // Price is proposed but not escalated ReadyToProposeUmaDispute, // Price is proposed, callback received, ready to submit dispute UmaDisputeProposed, // Escalation is done, waiting for confirmation UmaPending, // Claim is escalated, in case Spcc denied or didn't act within 7 days. UmaApproved, // Final state, claim is valid, claim can be enacted after 1 day, umaHaltOperator has 1 day to change to denied UmaDenied, // Final state, claim is invalid Halted, // UMAHO can halt claim if state is UmaApproved Cleaned // Claim is removed by protocol agent } struct Claim { uint256 created; uint256 updated; address initiator; bytes32 protocol; uint256 amount; address receiver; uint32 timestamp; State state; bytes ancillaryData; } // requestAndProposePriceFor() --> proposer = sherlockCore (address to receive BOND if UMA denies claim) // disputePriceFor() --> disputer = protocolAgent // priceSettled will be the the callback that contains the main data // Assume BOND = 9600, UMA's final fee = 1500. // Claim initiator (Sherlock) has to pay 22.2k to dispute a claim, // so we will execute a safeTransferFrom(claimInitiator, address(this), 22.2k). // We need to approve the contract 22.2k as it will be transferred from address(this). // The 22.2k consists of 2 * (BOND + final fee charged by UMA), as follows: // 1. On requestAndProposePriceFor(), the fee will be 10k: 9600 BOND + 1500 UMA's final fee; // 2. On disputePriceFor(), the fee will be the same 10k. // note that half of the BOND (4800) + UMA's final fee (1500) is "burnt" and sent to UMA // UMA's final fee can be changed in the future, which may result in lower or higher required staked amounts for escalating a claim. // On settle, either the protocolAgent (dispute success) or sherlockCore (dispute failure) // will receive 9600 + 4800 + 1500 = 15900. In addition, the protocolAgent will be entitled to // the claimAmount if the dispute is successful/ // lastClaimID <-- starts with 0, so initial id = 1 // have claim counter, easy to identify certain claims by their number // but use hash(callback.request.propose + callback.timestamp) as the internal UUID to handle the callbacks // So SPCC and UMAHO are hardcoded (UMAHO can be renounced) // In case these need to be updated, deploy different contract and upgrade it on the sherlock gov side. // On price proposed callback --> call disputePriceFor with callbackdata + sherlock.strategyManager() and address(this) /// @notice `SHERLOCK_CLAIM` in utf8 function UMA_IDENTIFIER() external view returns (bytes32); function sherlockProtocolClaimsCommittee() external view returns (address); /// @notice operator is able to deny approved UMA claims function umaHaltOperator() external view returns (address); /// @notice gov is able to renounce the role function renounceUmaHaltOperator() external; function claim(uint256 _claimID) external view returns (Claim memory); /// @notice Initiate a claim for a specific protocol as the protocol agent /// @param _protocol protocol ID (different from the internal or public claim ID fields) /// @param _amount amount of USDC which is being claimed by the protocol /// @param _receiver address to receive the amount of USDC being claimed /// @param _timestamp timestamp at which the exploit first occurred /// @param ancillaryData other data associated with the claim, such as the coverage agreement /// @dev The protocol agent that starts a claim will be the protocol agent during the claims lifecycle /// @dev Even if the protocol agent role is tranferred during the lifecycle function startClaim( bytes32 _protocol, uint256 _amount, address _receiver, uint32 _timestamp, bytes memory ancillaryData ) external; function spccApprove(uint256 _claimID) external; function spccRefuse(uint256 _claimID) external; /// @notice Callable by protocol agent /// @param _claimID Public claim ID /// @param _amount Bond amount sent by protocol agent /// @dev Use hardcoded USDC address /// @dev Use hardcoded bond amount /// @dev Use hardcoded liveness 7200 (2 hours) /// @dev proposedPrice = _amount function escalate(uint256 _claimID, uint256 _amount) external; /// @notice Execute claim, storage will be removed after /// @param _claimID Public ID of the claim /// @dev Needs to be SpccApproved or UmaApproved && >UMAHO_TIME /// @dev Funds will be pulled from core function payoutClaim(uint256 _claimID) external; /// @notice UMAHO is able to execute a halt if the state is UmaApproved and state was updated less than UMAHO_TIME ago function executeHalt(uint256 _claimID) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import './IManager.sol'; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; interface IStrategyManager is IManager { /// @return Returns the token type being deposited into a strategy function want() external view returns (IERC20); /// @notice Withdraws all USDC from the strategy back into the Sherlock core contract /// @dev Only callable by the Sherlock core contract /// @return The final amount withdrawn function withdrawAll() external returns (uint256); /// @notice Withdraws a specific amount of USDC from the strategy back into the Sherlock core contract /// @param _amount Amount of USDC to withdraw function withdraw(uint256 _amount) external; /// @notice Deposits all USDC held in this contract into the strategy function deposit() external; /// @return Returns the USDC balance in this contract function balanceOf() external view returns (uint256); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ import '../ISherlock.sol'; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; interface IManager { // An address or other value passed in is equal to zero (and shouldn't be) error ZeroArgument(); // Occurs when a value already holds the desired property, or is not whitelisted error InvalidArgument(); // If a required condition for executing the function is not met, it reverts and throws this error error InvalidConditions(); // Throws if the msg.sender is not the required address error InvalidSender(); event SherlockCoreSet(ISherlock sherlock); /// @notice Set sherlock core address where premiums should be send too /// @param _sherlock Current core contract /// @dev Only deployer is able to set core address on all chains except Hardhat network /// @dev One time function, will revert once `sherlock` != address(0) /// @dev This contract will be deployed first, passed on as argument in core constuctor /// @dev ^ that's needed for tvl accounting, once core is deployed this function is called /// @dev emits `SherlockCoreSet` function setSherlockCoreAddress(ISherlock _sherlock) external; /// @notice Pause external functions in contract function pause() external; /// @notice Unpause external functions in contract function unpause() external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.10; /******************************************************************************\ * Author: Evert Kors <[email protected]> (https://twitter.com/evert0x) * Sherlock Protocol: https://sherlock.xyz /******************************************************************************/ interface ISherlockClaimManagerCallbackReceiver { /// @notice Calls this function on approved contracts and passes args /// @param _protocol The protocol that is receiving the payout /// @param _claimID The claim ID that is receiving the payout /// @param _amount The amount of USDC being paid out for this claim function PreCorePayoutCallback( bytes32 _protocol, uint256 _claimID, uint256 _amount ) external; }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.8.0; import './SkinnyOptimisticOracleInterface.sol'; /** * @title Optimistic Requester. * @notice Optional interface that requesters can implement to receive callbacks. * @dev This contract does _not_ work with ERC777 collateral currencies or any others that call into the receiver on * transfer(). Using an ERC777 token would allow a user to maliciously grief other participants (while also losing * money themselves). */ interface OptimisticRequester { /** * @notice Callback for proposals. * @param identifier price identifier being requested. * @param timestamp timestamp of the price being requested. * @param ancillaryData ancillary data of the price being requested. * @param request request params after proposal. */ function priceProposed( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, SkinnyOptimisticOracleInterface.Request memory request ) external; /** * @notice Callback for disputes. * @param identifier price identifier being requested. * @param timestamp timestamp of the price being requested. * @param ancillaryData ancillary data of the price being requested. * @param request request params after dispute. */ function priceDisputed( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, SkinnyOptimisticOracleInterface.Request memory request ) external; /** * @notice Callback for settlement. * @param identifier price identifier being requested. * @param timestamp timestamp of the price being requested. * @param ancillaryData ancillary data of the price being requested. * @param request request params after settlement. */ function priceSettled( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, SkinnyOptimisticOracleInterface.Request memory request ) external; }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './OptimisticOracleInterface.sol'; /** * @title Interface for the gas-cost-reduced version of the OptimisticOracle. * @notice Differences from normal OptimisticOracle: * - refundOnDispute: flag is removed, by default there are no refunds on disputes. * - customizing request parameters: In the OptimisticOracle, parameters like `bond` and `customLiveness` can be reset * after a request is already made via `requestPrice`. In the SkinnyOptimisticOracle, these parameters can only be * set in `requestPrice`, which has an expanded input set. * - settleAndGetPrice: Replaced by `settle`, which can only be called once per settleable request. The resolved price * can be fetched via the `Settle` event or the return value of `settle`. * - general changes to interface: Functions that interact with existing requests all require the parameters of the * request to modify to be passed as input. These parameters must match with the existing request parameters or the * function will revert. This change reflects the internal refactor to store hashed request parameters instead of the * full request struct. * @dev Interface used by financial contracts to interact with the Oracle. Voters will use a different interface. */ abstract contract SkinnyOptimisticOracleInterface { event RequestPrice( address indexed requester, bytes32 indexed identifier, uint32 timestamp, bytes ancillaryData, Request request ); event ProposePrice( address indexed requester, bytes32 indexed identifier, uint32 timestamp, bytes ancillaryData, Request request ); event DisputePrice( address indexed requester, bytes32 indexed identifier, uint32 timestamp, bytes ancillaryData, Request request ); event Settle( address indexed requester, bytes32 indexed identifier, uint32 timestamp, bytes ancillaryData, Request request ); // Struct representing a price request. Note that this differs from the OptimisticOracleInterface's Request struct // in that refundOnDispute is removed. struct Request { address proposer; // Address of the proposer. address disputer; // Address of the disputer. IERC20 currency; // ERC20 token used to pay rewards and fees. bool settled; // True if the request is settled. int256 proposedPrice; // Price that the proposer submitted. int256 resolvedPrice; // Price resolved once the request is settled. uint256 expirationTime; // Time at which the request auto-settles without a dispute. uint256 reward; // Amount of the currency to pay to the proposer on settlement. uint256 finalFee; // Final fee to pay to the Store upon request to the DVM. uint256 bond; // Bond that the proposer and disputer must pay on top of the final fee. uint256 customLiveness; // Custom liveness value set by the requester. } // This value must be <= the Voting contract's `ancillaryBytesLimit` value otherwise it is possible // that a price can be requested to this contract successfully, but cannot be disputed because the DVM refuses // to accept a price request made with ancillary data length over a certain size. uint256 public constant ancillaryBytesLimit = 8192; /** * @notice Requests a new price. * @param identifier price identifier being requested. * @param timestamp timestamp of the price being requested. * @param ancillaryData ancillary data representing additional args being passed with the price request. * @param currency ERC20 token used for payment of rewards and fees. Must be approved for use with the DVM. * @param reward reward offered to a successful proposer. Will be pulled from the caller. Note: this can be 0, * which could make sense if the contract requests and proposes the value in the same call or * provides its own reward system. * @param bond custom proposal bond to set for request. If set to 0, defaults to the final fee. * @param customLiveness custom proposal liveness to set for request. * @return totalBond default bond + final fee that the proposer and disputer will be required to pay. */ function requestPrice( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, IERC20 currency, uint256 reward, uint256 bond, uint256 customLiveness ) external virtual returns (uint256 totalBond); /** * @notice Proposes a price value on another address' behalf. Note: this address will receive any rewards that come * from this proposal. However, any bonds are pulled from the caller. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters whose hash must match the request that the caller wants to * propose a price for. * @param proposer address to set as the proposer. * @param proposedPrice price being proposed. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the proposer once settled if the proposal is correct. */ function proposePriceFor( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request, address proposer, int256 proposedPrice ) public virtual returns (uint256 totalBond); /** * @notice Proposes a price value where caller is the proposer. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters whose hash must match the request that the caller wants to * propose a price for. * @param proposedPrice price being proposed. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the proposer once settled if the proposal is correct. */ function proposePrice( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request, int256 proposedPrice ) external virtual returns (uint256 totalBond); /** * @notice Combines logic of requestPrice and proposePrice while taking advantage of gas savings from not having to * overwrite Request params that a normal requestPrice() => proposePrice() flow would entail. Note: The proposer * will receive any rewards that come from this proposal. However, any bonds are pulled from the caller. * @dev The caller is the requester, but the proposer can be customized. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param currency ERC20 token used for payment of rewards and fees. Must be approved for use with the DVM. * @param reward reward offered to a successful proposer. Will be pulled from the caller. Note: this can be 0, * which could make sense if the contract requests and proposes the value in the same call or * provides its own reward system. * @param bond custom proposal bond to set for request. If set to 0, defaults to the final fee. * @param customLiveness custom proposal liveness to set for request. * @param proposer address to set as the proposer. * @param proposedPrice price being proposed. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the proposer once settled if the proposal is correct. */ function requestAndProposePriceFor( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, IERC20 currency, uint256 reward, uint256 bond, uint256 customLiveness, address proposer, int256 proposedPrice ) external virtual returns (uint256 totalBond); /** * @notice Disputes a price request with an active proposal on another address' behalf. Note: this address will * receive any rewards that come from this dispute. However, any bonds are pulled from the caller. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters whose hash must match the request that the caller wants to * dispute. * @param disputer address to set as the disputer. * @param requester sender of the initial price request. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the disputer once settled if the dispute was valid (the proposal was incorrect). */ function disputePriceFor( bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request, address disputer, address requester ) public virtual returns (uint256 totalBond); /** * @notice Disputes a price request with an active proposal where caller is the disputer. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters whose hash must match the request that the caller wants to * dispute. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the disputer once settled if the dispute was valid (the proposal was incorrect). */ function disputePrice( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request ) external virtual returns (uint256 totalBond); /** * @notice Attempts to settle an outstanding price request. Will revert if it isn't settleable. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters whose hash must match the request that the caller wants to * settle. * @return payout the amount that the "winner" (proposer or disputer) receives on settlement. This amount includes * the returned bonds as well as additional rewards. * @return resolvedPrice the price that the request settled to. */ function settle( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request ) external virtual returns (uint256 payout, int256 resolvedPrice); /** * @notice Computes the current state of a price request. See the State enum for more details. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters. * @return the State. */ function getState( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request ) external virtual returns (OptimisticOracleInterface.State); /** * @notice Checks if a given request has resolved, expired or been settled (i.e the optimistic oracle has a price). * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param request price request parameters. The hash of these parameters must match with the request hash that is * associated with the price request unique ID {requester, identifier, timestamp, ancillaryData}, or this method * will revert. * @return boolean indicating true if price exists and false if not. */ function hasPrice( address requester, bytes32 identifier, uint32 timestamp, bytes memory ancillaryData, Request memory request ) public virtual returns (bool); /** * @notice Generates stamped ancillary data in the format that it would be used in the case of a price dispute. * @param ancillaryData ancillary data of the price being requested. * @param requester sender of the initial price request. * @return the stamped ancillary bytes. */ function stampAncillaryData(bytes memory ancillaryData, address requester) public pure virtual returns (bytes memory); }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /** * @title Financial contract facing Oracle interface. * @dev Interface used by financial contracts to interact with the Oracle. Voters will use a different interface. */ abstract contract OptimisticOracleInterface { // Struct representing the state of a price request. enum State { Invalid, // Never requested. Requested, // Requested, no other actions taken. Proposed, // Proposed, but not expired or disputed yet. Expired, // Proposed, not disputed, past liveness. Disputed, // Disputed, but no DVM price returned yet. Resolved, // Disputed and DVM price is available. Settled // Final price has been set in the contract (can get here from Expired or Resolved). } // Struct representing a price request. struct Request { address proposer; // Address of the proposer. address disputer; // Address of the disputer. IERC20 currency; // ERC20 token used to pay rewards and fees. bool settled; // True if the request is settled. bool refundOnDispute; // True if the requester should be refunded their reward on dispute. int256 proposedPrice; // Price that the proposer submitted. int256 resolvedPrice; // Price resolved once the request is settled. uint256 expirationTime; // Time at which the request auto-settles without a dispute. uint256 reward; // Amount of the currency to pay to the proposer on settlement. uint256 finalFee; // Final fee to pay to the Store upon request to the DVM. uint256 bond; // Bond that the proposer and disputer must pay on top of the final fee. uint256 customLiveness; // Custom liveness value set by the requester. } // This value must be <= the Voting contract's `ancillaryBytesLimit` value otherwise it is possible // that a price can be requested to this contract successfully, but cannot be disputed because the DVM refuses // to accept a price request made with ancillary data length over a certain size. uint256 public constant ancillaryBytesLimit = 8192; /** * @notice Requests a new price. * @param identifier price identifier being requested. * @param timestamp timestamp of the price being requested. * @param ancillaryData ancillary data representing additional args being passed with the price request. * @param currency ERC20 token used for payment of rewards and fees. Must be approved for use with the DVM. * @param reward reward offered to a successful proposer. Will be pulled from the caller. Note: this can be 0, * which could make sense if the contract requests and proposes the value in the same call or * provides its own reward system. * @return totalBond default bond (final fee) + final fee that the proposer and disputer will be required to pay. * This can be changed with a subsequent call to setBond(). */ function requestPrice( bytes32 identifier, uint256 timestamp, bytes memory ancillaryData, IERC20 currency, uint256 reward ) external virtual returns (uint256 totalBond); /** * @notice Set the proposal bond associated with a price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param bond custom bond amount to set. * @return totalBond new bond + final fee that the proposer and disputer will be required to pay. This can be * changed again with a subsequent call to setBond(). */ function setBond( bytes32 identifier, uint256 timestamp, bytes memory ancillaryData, uint256 bond ) external virtual returns (uint256 totalBond); /** * @notice Sets the request to refund the reward if the proposal is disputed. This can help to "hedge" the caller * in the event of a dispute-caused delay. Note: in the event of a dispute, the winner still receives the other's * bond, so there is still profit to be made even if the reward is refunded. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. */ function setRefundOnDispute( bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) external virtual; /** * @notice Sets a custom liveness value for the request. Liveness is the amount of time a proposal must wait before * being auto-resolved. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param customLiveness new custom liveness. */ function setCustomLiveness( bytes32 identifier, uint256 timestamp, bytes memory ancillaryData, uint256 customLiveness ) external virtual; /** * @notice Proposes a price value on another address' behalf. Note: this address will receive any rewards that come * from this proposal. However, any bonds are pulled from the caller. * @param proposer address to set as the proposer. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param proposedPrice price being proposed. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the proposer once settled if the proposal is correct. */ function proposePriceFor( address proposer, address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData, int256 proposedPrice ) public virtual returns (uint256 totalBond); /** * @notice Proposes a price value for an existing price request. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @param proposedPrice price being proposed. * @return totalBond the amount that's pulled from the proposer's wallet as a bond. The bond will be returned to * the proposer once settled if the proposal is correct. */ function proposePrice( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData, int256 proposedPrice ) external virtual returns (uint256 totalBond); /** * @notice Disputes a price request with an active proposal on another address' behalf. Note: this address will * receive any rewards that come from this dispute. However, any bonds are pulled from the caller. * @param disputer address to set as the disputer. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return totalBond the amount that's pulled from the caller's wallet as a bond. The bond will be returned to * the disputer once settled if the dispute was value (the proposal was incorrect). */ function disputePriceFor( address disputer, address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) public virtual returns (uint256 totalBond); /** * @notice Disputes a price value for an existing price request with an active proposal. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return totalBond the amount that's pulled from the disputer's wallet as a bond. The bond will be returned to * the disputer once settled if the dispute was valid (the proposal was incorrect). */ function disputePrice( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) external virtual returns (uint256 totalBond); /** * @notice Retrieves a price that was previously requested by a caller. Reverts if the request is not settled * or settleable. Note: this method is not view so that this call may actually settle the price request if it * hasn't been settled. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return resolved price. */ function settleAndGetPrice( bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) external virtual returns (int256); /** * @notice Attempts to settle an outstanding price request. Will revert if it isn't settleable. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return payout the amount that the "winner" (proposer or disputer) receives on settlement. This amount includes * the returned bonds as well as additional rewards. */ function settle( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) external virtual returns (uint256 payout); /** * @notice Gets the current data structure containing all information about a price request. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return the Request data structure. */ function getRequest( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) public view virtual returns (Request memory); /** * @notice Returns the state of a price request. * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return the State enum value. */ function getState( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) public view virtual returns (State); /** * @notice Checks if a given request has resolved or been settled (i.e the optimistic oracle has a price). * @param requester sender of the initial price request. * @param identifier price identifier to identify the existing request. * @param timestamp timestamp to identify the existing request. * @param ancillaryData ancillary data of the price being requested. * @return true if price has resolved or settled, false otherwise. */ function hasPrice( address requester, bytes32 identifier, uint256 timestamp, bytes memory ancillaryData ) public view virtual returns (bool); function stampAncillaryData(bytes memory ancillaryData, address requester) public view virtual returns (bytes memory); }
{ "optimizer": { "enabled": true, "runs": 20000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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ISherlockClaimManager","name":"previous","type":"address"},{"indexed":false,"internalType":"contract ISherlockClaimManager","name":"current","type":"address"}],"name":"ClaimManagerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"receiver","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"ClaimPayout","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previous","type":"address"},{"indexed":false,"internalType":"address","name":"current","type":"address"}],"name":"NonStakerAddressUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract 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"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sher","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sherDistributionManager","outputs":[{"internalType":"contract ISherDistributionManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenID","type":"uint256"}],"name":"sherRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sherlockClaimManager","outputs":[{"internalType":"contract ISherlockClaimManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sherlockProtocolManager","outputs":[{"internalType":"contract ISherlockProtocolManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakingPeriods","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenID","type":"uint256"}],"name":"tokenBalanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalTokenBalanceStakers","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_nonStakers","type":"address"}],"name":"updateNonStakersAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract 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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _token (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [1] : _sher (address): 0x46D2A90153cd8F09464CA3a5605B6BBeC9C2fF01
Arg [2] : _name (string): Sherlock Staking Position NFT-V1
Arg [3] : _symbol (string): SHER-POS
Arg [4] : _yieldStrategy (address): 0xF02d3A6288D998B412ce749cfF244c8ef799f582
Arg [5] : _sherDistributionManager (address): 0x5775F32787656E77dd99f20F4E478DdC85fdB31b
Arg [6] : _nonStakersAddress (address): 0x666B8EbFbF4D5f0CE56962a25635CfF563F13161
Arg [7] : _sherlockProtocolManager (address): 0x3d0b8A0A10835Ab9b0f0BeB54C5400B8aAcaa1D3
Arg [8] : _sherlockClaimManager (address): 0xFeEDD254ae4B7c44A0472Bb836b813Ce4625Eb84
Arg [9] : _initialstakingPeriods (uint256[]): 15724800,31449600
-----Encoded View---------------
17 Constructor Arguments found :
Arg [0] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [1] : 00000000000000000000000046d2a90153cd8f09464ca3a5605b6bbec9c2ff01
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000180
Arg [4] : 000000000000000000000000f02d3a6288d998b412ce749cff244c8ef799f582
Arg [5] : 0000000000000000000000005775f32787656e77dd99f20f4e478ddc85fdb31b
Arg [6] : 000000000000000000000000666b8ebfbf4d5f0ce56962a25635cff563f13161
Arg [7] : 0000000000000000000000003d0b8a0a10835ab9b0f0beb54c5400b8aacaa1d3
Arg [8] : 000000000000000000000000feedd254ae4b7c44a0472bb836b813ce4625eb84
Arg [9] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [11] : 536865726c6f636b205374616b696e6720506f736974696f6e204e46542d5631
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000008
Arg [13] : 534845522d504f53000000000000000000000000000000000000000000000000
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [15] : 0000000000000000000000000000000000000000000000000000000000eff100
Arg [16] : 0000000000000000000000000000000000000000000000000000000001dfe200
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