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Approve | 20250218 | 151 days ago | IN | 0 ETH | 0.00003608 | ||||
Approve | 19735192 | 223 days ago | IN | 0 ETH | 0.00014607 | ||||
Approve | 19047765 | 320 days ago | IN | 0 ETH | 0.0003425 | ||||
Redeem | 18379246 | 413 days ago | IN | 0 ETH | 0.0030012 | ||||
Redeem | 18289466 | 426 days ago | IN | 0 ETH | 0.00134792 | ||||
Redeem | 18055222 | 459 days ago | IN | 0 ETH | 0.00197934 | ||||
Redeem | 17848007 | 488 days ago | IN | 0 ETH | 0.00268746 | ||||
Redeem | 17707517 | 507 days ago | IN | 0 ETH | 0.00283908 | ||||
Redeem | 17567530 | 527 days ago | IN | 0 ETH | 0.00261356 | ||||
Redeem | 17473592 | 540 days ago | IN | 0 ETH | 0.00310935 | ||||
Redeem | 17260302 | 570 days ago | IN | 0 ETH | 0.00835286 | ||||
Redeem | 16972629 | 611 days ago | IN | 0 ETH | 0.00371535 | ||||
Approve | 16781204 | 638 days ago | IN | 0 ETH | 0.00101751 | ||||
Redeem | 16649949 | 656 days ago | IN | 0 ETH | 0.01791869 | ||||
Redeem | 16624983 | 660 days ago | IN | 0 ETH | 0.00270665 | ||||
Approve | 16603835 | 663 days ago | IN | 0 ETH | 0.00083472 | ||||
Redeem | 16603334 | 663 days ago | IN | 0 ETH | 0.00369097 | ||||
Redeem | 16598069 | 664 days ago | IN | 0 ETH | 0.00399725 | ||||
Approve | 16556694 | 669 days ago | IN | 0 ETH | 0.00145313 | ||||
Deposit | 16547206 | 671 days ago | IN | 0 ETH | 0.00516651 | ||||
Send Fees | 16537883 | 672 days ago | IN | 0 ETH | 0.00643249 | ||||
Redeem | 16532869 | 673 days ago | IN | 0 ETH | 0.00360643 | ||||
Redeem | 16530623 | 673 days ago | IN | 0 ETH | 0.00374851 | ||||
Redeem | 16489698 | 679 days ago | IN | 0 ETH | 0.00320339 | ||||
Redeem | 16479950 | 680 days ago | IN | 0 ETH | 0.00517972 |
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Contract Name:
Cellar
Compiler Version
v0.8.16+commit.07a7930e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import { ERC4626, SafeERC20 } from "./ERC4626.sol"; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol"; import { Registry } from "src/Registry.sol"; import { SwapRouter } from "src/modules/swap-router/SwapRouter.sol"; import { PriceRouter } from "src/modules/price-router/PriceRouter.sol"; import { IGravity } from "src/interfaces/external/IGravity.sol"; import { AddressArray } from "src/utils/AddressArray.sol"; import { Math } from "../utils/Math.sol"; // import { ReentrancyGuard } from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import { Owned } from "@solmate/auth/Owned.sol"; import { ReentrancyGuard } from "@solmate/utils/ReentrancyGuard.sol"; /** * @title Sommelier Cellar * @notice A composable ERC4626 that can use a set of other ERC4626 or ERC20 positions to earn yield. * @author Brian Le */ contract Cellar is ERC4626, Owned, ReentrancyGuard { using AddressArray for address[]; using AddressArray for ERC20[]; using SafeERC20 for ERC20; using SafeCast for uint256; using Math for uint256; // ========================================= POSITIONS CONFIG ========================================= /** * @notice Emitted when a position is added. * @param position address of position that was added * @param index index that position was added at */ event PositionAdded(address indexed position, uint256 index); /** * @notice Emitted when a position is removed. * @param position address of position that was removed * @param index index that position was removed from */ event PositionRemoved(address indexed position, uint256 index); /** * @notice Emitted when the positions at two indexes are swapped. * @param newPosition1 address of position (previously at index2) that replaced index1. * @param newPosition2 address of position (previously at index1) that replaced index2. * @param index1 index of first position involved in the swap * @param index2 index of second position involved in the swap. */ event PositionSwapped(address indexed newPosition1, address indexed newPosition2, uint256 index1, uint256 index2); /** * @notice Attempted an operation on an untrusted position. * @param position address of the position */ error Cellar__UntrustedPosition(address position); /** * @notice Attempted to add a position that is already being used. * @param position address of the position */ error Cellar__PositionAlreadyUsed(address position); /** * @notice Attempted an action on a position that is required to be empty before the action can be performed. * @param position address of the non-empty position * @param sharesRemaining amount of shares remaining in the position */ error Cellar__PositionNotEmpty(address position, uint256 sharesRemaining); /** * @notice Attempted an operation with an asset that was different then the one expected. * @param asset address of the asset * @param expectedAsset address of the expected asset */ error Cellar__AssetMismatch(address asset, address expectedAsset); /** * @notice Attempted an action on a position that is not being used by the cellar but must be for * the operation to succeed. * @param position address of the invalid position */ error Cellar__InvalidPosition(address position); /** * @notice Attempted to remove holding position. */ error Cellar__RemoveHoldingPosition(); /** * @notice Attempted to add a position when the position array is full. * @param maxPositions maximum number of positions that can be used */ error Cellar__PositionArrayFull(uint256 maxPositions); /** * @notice Value specifying the interface a position uses. * @param ERC20 an ERC20 token * @param ERC4626 an ERC4626 vault * @param Cellar a cellar */ enum PositionType { ERC20, ERC4626, Cellar } /** * @notice Addresses of the positions currently used by the cellar. */ address[] public positions; /** * @notice Tell whether a position is currently used. */ mapping(address => bool) public isPositionUsed; /** * @notice Get the type related to a position. */ mapping(address => PositionType) public getPositionType; /** * @notice Get the addresses of the positions current used by the cellar. */ function getPositions() external view returns (address[] memory) { return positions; } /** * @notice Maximum amount of positions a cellar can use at once. */ uint8 public constant MAX_POSITIONS = 32; /** * @notice Insert a trusted position to the list of positions used by the cellar at a given index. * @param index index at which to insert the position * @param position address of position to add */ function addPosition(uint256 index, address position) external onlyOwner whenNotShutdown { if (positions.length >= MAX_POSITIONS) revert Cellar__PositionArrayFull(MAX_POSITIONS); if (!isTrusted[position]) revert Cellar__UntrustedPosition(position); // Check if position is already being used. if (isPositionUsed[position]) revert Cellar__PositionAlreadyUsed(position); // Add new position at a specified index. positions.add(index, position); isPositionUsed[position] = true; emit PositionAdded(position, index); } /** * @notice Push a trusted position to the end of the list of positions used by the cellar. * @dev If you know you are going to add a position to the end of the array, this is more * efficient then `addPosition`. * @param position address of position to add */ function pushPosition(address position) external onlyOwner whenNotShutdown { if (positions.length >= MAX_POSITIONS) revert Cellar__PositionArrayFull(MAX_POSITIONS); if (!isTrusted[position]) revert Cellar__UntrustedPosition(position); // Check if position is already being used. if (isPositionUsed[position]) revert Cellar__PositionAlreadyUsed(position); // Add new position to the end of the positions. positions.push(position); isPositionUsed[position] = true; emit PositionAdded(position, positions.length - 1); } /** * @notice Remove the position at a given index from the list of positions used by the cellar. * @param index index at which to remove the position */ function removePosition(uint256 index) external onlyOwner { // Get position being removed. address position = positions[index]; // Only remove position if it is empty, and if it is not the holding position. uint256 positionBalance = _balanceOf(position); if (positionBalance > 0) revert Cellar__PositionNotEmpty(position, positionBalance); if (position == holdingPosition) revert Cellar__RemoveHoldingPosition(); // Remove position at the given index. positions.remove(index); isPositionUsed[position] = false; emit PositionRemoved(position, index); } /** * @notice Swap the positions at two given indexes. * @param index1 index of first position to swap * @param index2 index of second position to swap */ function swapPositions(uint256 index1, uint256 index2) external onlyOwner { // Get the new positions that will be at each index. address newPosition1 = positions[index2]; address newPosition2 = positions[index1]; // Swap positions. (positions[index1], positions[index2]) = (newPosition1, newPosition2); emit PositionSwapped(newPosition1, newPosition2, index1, index2); } // ============================================ TRUST CONFIG ============================================ /** * @notice Emitted when trust for a position is changed. * @param position address of position that trust was changed for * @param isTrusted whether the position is trusted */ event TrustChanged(address indexed position, bool isTrusted); /** * @notice Attempted to trust a position not being used. * @param position address of the invalid position */ error Cellar__PositionPricingNotSetUp(address position); /** * @notice Addresses of the positions currently used by the cellar. */ uint256 public constant PRICE_ROUTER_REGISTRY_SLOT = 2; /** * @notice Tell whether a position is trusted. */ mapping(address => bool) public isTrusted; /** * @notice Trust a position to be used by the cellar. * @param position address of position to trust * @param positionType value specifying the interface the position uses */ function trustPosition(address position, PositionType positionType) external onlyOwner { // Trust position. isTrusted[position] = true; // Set position type. getPositionType[position] = positionType; // Now that position type is set up, check that asset of position is supported for pricing operations. ERC20 positionAsset = _assetOf(position); if (!PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)).isSupported(positionAsset)) revert Cellar__PositionPricingNotSetUp(address(positionAsset)); emit TrustChanged(position, true); } // ============================================ WITHDRAW CONFIG ============================================ /** * @notice Emitted when withdraw type configuration is changed. * @param oldType previous withdraw type * @param newType new withdraw type */ event WithdrawTypeChanged(WithdrawType oldType, WithdrawType newType); /** * @notice The withdraw type to use for the cellar. * @param ORDERLY use `positions` in specify the order in which assets are withdrawn (eg. * `positions[0]` is withdrawn from first); least impactful positions (position * that will have its core positions impacted the least by having funds removed) * should be withdrawn from first and most impactful position should be last * @param PROPORTIONAL pull assets from each position proportionally when withdrawing, used if * trying to maintain a specific ratio */ enum WithdrawType { ORDERLY, PROPORTIONAL } /** * @notice The withdraw type to used by the cellar. */ WithdrawType public withdrawType; /** * @notice Set the withdraw type used by the cellar. * @param newWithdrawType value of the new withdraw type to use */ function setWithdrawType(WithdrawType newWithdrawType) external onlyOwner { emit WithdrawTypeChanged(withdrawType, newWithdrawType); withdrawType = newWithdrawType; } // ============================================ HOLDINGS CONFIG ============================================ /** * @notice Emitted when the holdings position is changed. * @param oldPosition address of the old holdings position * @param newPosition address of the new holdings position */ event HoldingPositionChanged(address indexed oldPosition, address indexed newPosition); /** * @notice The "default" position which uses the same asset as the cellar. It is the position * deposited assets will automatically go into (perhaps while waiting to be rebalanced * to other positions) and commonly the first position withdrawn assets will be pulled * from if using orderly withdraws. * @dev MUST accept the same asset as the cellar's `asset`. MUST be a position present in * `positions`. Should be a static (eg. just holding) or lossless (eg. lending on Aave) * position. Should not be expensive to move assets in or out of as this will occur * frequently. It is highly recommended to choose a "simple" holding position. */ address public holdingPosition; /** * @notice Set the holding position used by the cellar. * @param newHoldingPosition address of the new holding position to use */ function setHoldingPosition(address newHoldingPosition) external onlyOwner { if (!isPositionUsed[newHoldingPosition]) revert Cellar__InvalidPosition(newHoldingPosition); ERC20 holdingPositionAsset = _assetOf(newHoldingPosition); if (holdingPositionAsset != asset) revert Cellar__AssetMismatch(address(holdingPositionAsset), address(asset)); emit HoldingPositionChanged(holdingPosition, newHoldingPosition); holdingPosition = newHoldingPosition; } // ============================================ ACCRUAL STORAGE ============================================ /** * @notice Timestamp of when the last accrual occurred. * @dev Used for determining the amount of platform fees that can be taken during an accrual period. */ uint64 public lastAccrual; // =============================================== FEES CONFIG =============================================== /** * @notice Emitted when platform fees is changed. * @param oldPlatformFee value platform fee was changed from * @param newPlatformFee value platform fee was changed to */ event PlatformFeeChanged(uint64 oldPlatformFee, uint64 newPlatformFee); /** * @notice Emitted when performance fees is changed. * @param oldPerformanceFee value performance fee was changed from * @param newPerformanceFee value performance fee was changed to */ event PerformanceFeeChanged(uint64 oldPerformanceFee, uint64 newPerformanceFee); /** * @notice Emitted when fees distributor is changed. * @param oldFeesDistributor address of fee distributor was changed from * @param newFeesDistributor address of fee distributor was changed to */ event FeesDistributorChanged(bytes32 oldFeesDistributor, bytes32 newFeesDistributor); /** * @notice Emitted when strategist performance fee cut is changed. * @param oldPerformanceCut value strategist performance fee cut was changed from * @param newPerformanceCut value strategist performance fee cut was changed to */ event StrategistPerformanceCutChanged(uint64 oldPerformanceCut, uint64 newPerformanceCut); /** * @notice Emitted when strategist platform fee cut is changed. * @param oldPlatformCut value strategist platform fee cut was changed from * @param newPlatformCut value strategist platform fee cut was changed to */ event StrategistPlatformCutChanged(uint64 oldPlatformCut, uint64 newPlatformCut); /** * @notice Emitted when strategists payout address is changed. * @param oldPayoutAddress value strategists payout address was changed from * @param newPayoutAddress value strategists payout address was changed to */ event StrategistPayoutAddressChanged(address oldPayoutAddress, address newPayoutAddress); /** * @notice Attempted to use an invalid cosmos address. */ error Cellar__InvalidCosmosAddress(); /** * @notice Attempted to change strategist fee cut with invalid value. */ error Cellar__InvalidFeeCut(); /** * @notice Attempted to change performance/platform fee with invalid value. */ error Cellar__InvalidFee(); /** * @notice Data related to fees. * @param highWatermark Stores the share price to be used as a High Watermark to calculate performance fees. * @param strategistPerformanceCut Determines how much performance fees go to strategist. * This should be a value out of 1e18 (ie. 1e18 represents 100%, 0 represents 0%). * @param strategistPlatformCut Determines how much platform fees go to strategist. * This should be a value out of 1e18 (ie. 1e18 represents 100%, 0 represents 0%). * @param platformFee The percentage of total assets accrued as platform fees over a year. This should be a value out of 1e18 (ie. 1e18 represents 100%, 0 represents 0%). * @param performanceFee The percentage of total assets accrued as platform fees over a year. * This should be a value out of 1e18 (ie. 1e18 represents 100%, 0 represents 0%). * @param feesDistributor Cosmos address of module that distributes fees, specified as a hex value. * The Gravity contract expects a 32-byte value formatted in a specific way. * @param strategistPayoutAddress Address to send the strategists fee shares. */ struct FeeData { uint256 highWatermark; uint64 strategistPerformanceCut; uint64 strategistPlatformCut; uint64 platformFee; uint64 performanceFee; bytes32 feesDistributor; address strategistPayoutAddress; } /** * @notice Stores all fee data for cellar. */ FeeData public feeData = FeeData({ highWatermark: 0, strategistPerformanceCut: 0.75e18, strategistPlatformCut: 0.75e18, platformFee: 0.02e18, performanceFee: 0.1e18, feesDistributor: hex"000000000000000000000000b813554b423266bbd4c16c32fa383394868c1f55", // 20 bytes, so need 12 bytes of zero strategistPayoutAddress: address(0) }); uint64 public constant MAX_PERFORMANCE_FEE = 0.5e18; uint64 public constant MAX_PLATFORM_FEE = 0.2e18; uint64 public constant MAX_FEE_CUT = 1e18; /** * @notice Set the percentage of platform fees accrued over a year. * @param newPlatformFee value out of 1e18 that represents new platform fee percentage */ function setPlatformFee(uint64 newPlatformFee) external onlyOwner { if (newPlatformFee > MAX_PLATFORM_FEE) revert Cellar__InvalidFee(); emit PlatformFeeChanged(feeData.platformFee, newPlatformFee); feeData.platformFee = newPlatformFee; } /** * @notice Set the percentage of performance fees accrued from yield. * @param newPerformanceFee value out of 1e18 that represents new performance fee percentage */ function setPerformanceFee(uint64 newPerformanceFee) external onlyOwner { if (newPerformanceFee > MAX_PERFORMANCE_FEE) revert Cellar__InvalidFee(); emit PerformanceFeeChanged(feeData.performanceFee, newPerformanceFee); feeData.performanceFee = newPerformanceFee; } /** * @notice Set the address of the fee distributor on the Sommelier chain. * @dev IMPORTANT: Ensure that the address is formatted in the specific way that the Gravity contract * expects it to be. * @param newFeesDistributor formatted address of the new fee distributor module */ function setFeesDistributor(bytes32 newFeesDistributor) external onlyOwner { if (uint256(newFeesDistributor) > type(uint160).max) revert Cellar__InvalidCosmosAddress(); emit FeesDistributorChanged(feeData.feesDistributor, newFeesDistributor); feeData.feesDistributor = newFeesDistributor; } /** * @notice Sets the Strategists cut of performance fees * @param cut the performance cut for the strategist */ function setStrategistPerformanceCut(uint64 cut) external onlyOwner { if (cut > MAX_FEE_CUT) revert Cellar__InvalidFeeCut(); emit StrategistPerformanceCutChanged(feeData.strategistPerformanceCut, cut); feeData.strategistPerformanceCut = cut; } /** * @notice Sets the Strategists cut of platform fees * @param cut the platform cut for the strategist */ function setStrategistPlatformCut(uint64 cut) external onlyOwner { if (cut > MAX_FEE_CUT) revert Cellar__InvalidFeeCut(); emit StrategistPlatformCutChanged(feeData.strategistPlatformCut, cut); feeData.strategistPlatformCut = cut; } /** * @notice Sets the Strategists payout address * @param payout the new strategist payout address */ function setStrategistPayoutAddress(address payout) external onlyOwner { emit StrategistPayoutAddressChanged(feeData.strategistPayoutAddress, payout); feeData.strategistPayoutAddress = payout; } // ============================================= LIMITS CONFIG ============================================= /** * @notice Emitted when the liquidity limit is changed. * @param oldLimit amount the limit was changed from * @param newLimit amount the limit was changed to */ event LiquidityLimitChanged(uint256 oldLimit, uint256 newLimit); /** * @notice Emitted when the deposit limit is changed. * @param oldLimit amount the limit was changed from * @param newLimit amount the limit was changed to */ event DepositLimitChanged(uint256 oldLimit, uint256 newLimit); /** * @notice Attempted deposit more than the max deposit. * @param assets the assets user attempted to deposit * @param maxDeposit the max assets that can be deposited */ error Cellar__DepositRestricted(uint256 assets, uint256 maxDeposit); /** * @notice Maximum amount of assets that can be managed by the cellar. Denominated in the same decimals * as the current asset. * @dev Set to `type(uint256).max` to have no limit. */ uint256 public liquidityLimit = type(uint256).max; /** * @notice Maximum amount of assets per wallet. Denominated in the same decimals as the current asset. * @dev Set to `type(uint256).max` to have no limit. */ uint256 public depositLimit = type(uint256).max; /** * @notice Set the maximum liquidity that cellar can manage. Uses the same decimals as the current asset. * @param newLimit amount of assets to set as the new limit */ function setLiquidityLimit(uint256 newLimit) external onlyOwner { emit LiquidityLimitChanged(liquidityLimit, newLimit); liquidityLimit = newLimit; } /** * @notice Set the per-wallet deposit limit. Uses the same decimals as the current asset. * @param newLimit amount of assets to set as the new limit */ function setDepositLimit(uint256 newLimit) external onlyOwner { emit DepositLimitChanged(depositLimit, newLimit); depositLimit = newLimit; } // =========================================== EMERGENCY LOGIC =========================================== /** * @notice Emitted when cellar emergency state is changed. * @param isShutdown whether the cellar is shutdown */ event ShutdownChanged(bool isShutdown); /** * @notice Attempted action was prevented due to contract being shutdown. */ error Cellar__ContractShutdown(); /** * @notice Attempted action was prevented due to contract not being shutdown. */ error Cellar__ContractNotShutdown(); /** * @notice Whether or not the contract is shutdown in case of an emergency. */ bool public isShutdown; /** * @notice Prevent a function from being called during a shutdown. */ modifier whenNotShutdown() { if (isShutdown) revert Cellar__ContractShutdown(); _; } /** * @notice Shutdown the cellar. Used in an emergency or if the cellar has been deprecated. * @dev In the case where */ function initiateShutdown() external whenNotShutdown onlyOwner { isShutdown = true; emit ShutdownChanged(true); } /** * @notice Restart the cellar. */ function liftShutdown() external onlyOwner { if (!isShutdown) revert Cellar__ContractNotShutdown(); isShutdown = false; emit ShutdownChanged(false); } // =========================================== CONSTRUCTOR =========================================== /** * @notice Address of the platform's registry contract. Used to get the latest address of modules. */ Registry public immutable registry; /** * @dev Owner should be set to the Gravity Bridge, which relays instructions from the Steward * module to the cellars. * https://github.com/PeggyJV/steward * https://github.com/cosmos/gravity-bridge/blob/main/solidity/contracts/Gravity.sol * @param _registry address of the platform's registry contract * @param _asset address of underlying token used for the for accounting, depositing, and withdrawing * @param _positions addresses of the positions to initialize the cellar with * @param _positionTypes types of each positions used * @param _holdingPosition address of the position to use as the holding position * @param _withdrawType withdraw type to use for the cellar * @param _name name of this cellar's share token * @param _name symbol of this cellar's share token * @param _strategistPayout The address to send the strategists fee shares. */ constructor( Registry _registry, ERC20 _asset, address[] memory _positions, PositionType[] memory _positionTypes, address _holdingPosition, WithdrawType _withdrawType, string memory _name, string memory _symbol, address _strategistPayout ) ERC4626(_asset, _name, _symbol) Owned(_registry.getAddress(0)) { registry = _registry; // Initialize positions. positions = _positions; ERC20 positionAsset; for (uint256 i; i < _positions.length; i++) { address position = _positions[i]; if (isPositionUsed[position]) revert Cellar__PositionAlreadyUsed(position); isTrusted[position] = true; isPositionUsed[position] = true; getPositionType[position] = _positionTypes[i]; positionAsset = _assetOf(position); if (!PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)).isSupported(positionAsset)) revert Cellar__PositionPricingNotSetUp(address(positionAsset)); } // Initialize holding position. if (!isPositionUsed[_holdingPosition]) revert Cellar__InvalidPosition(_holdingPosition); ERC20 holdingPositionAsset = _assetOf(_holdingPosition); if (holdingPositionAsset != _asset) revert Cellar__AssetMismatch(address(holdingPositionAsset), address(_asset)); holdingPosition = _holdingPosition; // Initialize withdraw type. withdrawType = _withdrawType; // Initialize last accrual timestamp to time that cellar was created, otherwise the first // `accrue` will take platform fees from 1970 to the time it is called. lastAccrual = uint64(block.timestamp); feeData.strategistPayoutAddress = _strategistPayout; } // =========================================== CORE LOGIC =========================================== /** * @notice Emitted when withdraws are made from a position. * @param position the position assets were withdrawn from * @param amount the amount of assets withdrawn */ event PulledFromPosition(address indexed position, uint256 amount); /** * @notice Emitted when share locking period is changed. * @param oldPeriod the old locking period * @param newPeriod the new locking period */ event ShareLockingPeriodChanged(uint256 oldPeriod, uint256 newPeriod); /** * @notice Attempted an action with zero shares. */ error Cellar__ZeroShares(); /** * @notice Attempted an action with zero assets. */ error Cellar__ZeroAssets(); /** * @notice Withdraw did not withdraw all assets. * @param assetsOwed the remaining assets owed that were not withdrawn. */ error Cellar__IncompleteWithdraw(uint256 assetsOwed); /** * @notice Attempted to withdraw an illiquid position. * @param illiquidPosition the illiquid position. */ error Cellar__IlliquidWithdraw(address illiquidPosition); /** * @notice Attempted to set `shareLockPeriod` to an invalid number. */ error Cellar__InvalidShareLockPeriod(); /** * @notice Attempted to burn shares when they are locked. * @param blockSharesAreUnlocked the block number when caller can transfer/redeem shares * @param currentBlock the current block number. */ error Cellar__SharesAreLocked(uint256 blockSharesAreUnlocked, uint256 currentBlock); /** * @notice Attempted deposit on behalf of a user without being approved. */ error Cellar__NotApprovedToDepositOnBehalf(address depositor); /** * @notice Shares must be locked for atleaset 8 blocks after minting. */ uint256 public constant MINIMUM_SHARE_LOCK_PERIOD = 8; /** * @notice Shares can be locked for at most 7200 blocks after minting. */ uint256 public constant MAXIMUM_SHARE_LOCK_PERIOD = 7200; /** * @notice After deposits users must wait `shareLockPeriod` blocks before being able to transfer or withdraw their shares. */ uint256 public shareLockPeriod = MAXIMUM_SHARE_LOCK_PERIOD; /** * @notice mapping that stores every users last block they minted shares. */ mapping(address => uint256) public userShareLockStartBlock; /** * @notice Allows share lock period to be updated. * @param newLock the new lock period */ function setShareLockPeriod(uint256 newLock) external onlyOwner { if (newLock < MINIMUM_SHARE_LOCK_PERIOD || newLock > MAXIMUM_SHARE_LOCK_PERIOD) revert Cellar__InvalidShareLockPeriod(); uint256 oldLockingPeriod = shareLockPeriod; shareLockPeriod = newLock; emit ShareLockingPeriodChanged(oldLockingPeriod, newLock); } /** * @notice helper function that checks enough blocks have passed to unlock shares. * @param owner the address of the user to check */ function _checkIfSharesLocked(address owner) internal view { uint256 lockBlock = userShareLockStartBlock[owner]; if (lockBlock != 0) { uint256 blockSharesAreUnlocked = lockBlock + shareLockPeriod; if (blockSharesAreUnlocked > block.number) revert Cellar__SharesAreLocked(blockSharesAreUnlocked, block.number); } } /** * @notice modifies before transfer hook to check that shares are not locked * @param from the address transferring shares */ function _beforeTokenTransfer( address from, address, uint256 ) internal view override { _checkIfSharesLocked(from); } /** * @notice called at the beginning of deposit. * @param assets amount of assets deposited by user. * @param receiver address receiving the shares. */ function beforeDeposit( uint256 assets, uint256, address receiver ) internal override whenNotShutdown { if (msg.sender != receiver) { if (!registry.approvedForDepositOnBehalf(msg.sender)) revert Cellar__NotApprovedToDepositOnBehalf(msg.sender); } uint256 maxAssets = maxDeposit(receiver); if (assets > maxAssets) revert Cellar__DepositRestricted(assets, maxAssets); feeData.highWatermark += assets; } /** * @notice called at the end of deposit. * @param assets amount of assets deposited by user. */ function afterDeposit( uint256 assets, uint256, address receiver ) internal override { _depositTo(holdingPosition, assets); userShareLockStartBlock[receiver] = block.number; } /** * @notice called at the beginning of withdraw. * @param assets amount of assets withdrawn by user. */ function beforeWithdraw( uint256 assets, uint256, address, address owner ) internal override { // Make sure users shares are not locked. _checkIfSharesLocked(owner); // Need to check if assets is greater than the high watermark // because if the performanceFee is set to zero, and all cellar shares are redeemed, // if the cellar has earned any yield, assets will be greater than the high watermark. // Becuase the high watermark is only updated when performance fees are minted. uint256 highWatermark = feeData.highWatermark; feeData.highWatermark = assets > highWatermark ? 0 : highWatermark - assets; } /** * @notice Deposits assets into the cellar, and returns shares to receiver. * @param assets amount of assets deposited by user. * @param receiver address to receive the shares. * @return shares amount of shares given for deposit. */ function deposit(uint256 assets, address receiver) public override nonReentrant returns (uint256 shares) { uint256 _totalAssets = totalAssets(); _takePerformanceFees(_totalAssets); // Check for rounding error since we round down in previewDeposit. if ((shares = _convertToShares(assets, _totalAssets)) == 0) revert Cellar__ZeroShares(); beforeDeposit(assets, shares, receiver); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares, receiver); } /** * @notice Mints shares from the cellar, and returns shares to receiver. * @param shares amount of shares requested by user. * @param receiver address to receive the shares. * @return assets amount of assets deposited into the cellar. */ function mint(uint256 shares, address receiver) public override nonReentrant returns (uint256 assets) { uint256 _totalAssets = totalAssets(); _takePerformanceFees(_totalAssets); // previewMintRoundsUp, but iniital mint could return zero assets, so check for rounding error. if ((assets = _previewMint(shares, _totalAssets)) == 0) revert Cellar__ZeroAssets(); // No need to check for rounding error, previewMint rounds up. beforeDeposit(assets, shares, receiver); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares, receiver); } /** * @notice helper function that checks if msg.sender has the allowance to spend owner's shares. * @dev reverts if msg.sender != owner, and msg.sender does not have enough allowance. */ function _checkAllowance(address owner, uint256 shares) internal { if (msg.sender != owner) { _spendAllowance(owner, msg.sender, shares); } } /** * @notice Withdraw assets from the cellar by redeeming shares. * @dev Unlike conventional ERC4626 contracts, this may not always return one asset to the receiver. * Since there are no swaps involved in this function, the receiver may receive multiple * assets. The value of all the assets returned will be equal to the amount defined by * `assets` denominated in the `asset` of the cellar (eg. if `asset` is USDC and `assets` * is 1000, then the receiver will receive $1000 worth of assets in either one or many * tokens). * @param assets equivalent value of the assets withdrawn, denominated in the cellar's asset * @param receiver address that will receive withdrawn assets * @param owner address that owns the shares being redeemed * @return shares amount of shares redeemed */ function withdraw( uint256 assets, address receiver, address owner ) public override nonReentrant returns (uint256 shares) { // Get data efficiently. ( uint256 _totalAssets, // Store totalHoldings and pass into _withdrawInOrder if no stack errors. address[] memory _positions, ERC20[] memory positionAssets, uint256[] memory positionBalances, uint256[] memory withdrawableBalances ) = _getData(); _takePerformanceFees(_totalAssets); // No need to check for rounding error, `previewWithdraw` rounds up. shares = _previewWithdraw(assets, _totalAssets); beforeWithdraw(assets, shares, receiver, owner); _checkAllowance(owner, shares); uint256 totalShares = totalSupply(); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); withdrawType == WithdrawType.ORDERLY ? _withdrawInOrder(assets, receiver, _positions, positionAssets, positionBalances, withdrawableBalances) : _withdrawInProportion(shares, totalShares, receiver, _positions, positionBalances, withdrawableBalances); afterWithdraw(assets, shares, receiver, owner); } /** * @notice Redeem shares to withdraw assets from the cellar. * @dev Unlike conventional ERC4626 contracts, this may not always return one asset to the receiver. * Since there are no swaps involved in this function, the receiver may receive multiple * assets. The value of all the assets returned will be equal to the amount defined by * `assets` denominated in the `asset` of the cellar (eg. if `asset` is USDC and `assets` * is 1000, then the receiver will receive $1000 worth of assets in either one or many * tokens). * @param shares amount of shares to redeem * @param receiver address that will receive withdrawn assets * @param owner address that owns the shares being redeemed * @return assets equivalent value of the assets withdrawn, denominated in the cellar's asset */ function redeem( uint256 shares, address receiver, address owner ) public override nonReentrant returns (uint256 assets) { // Get data efficiently. ( uint256 _totalAssets, // Store totalHoldings and pass into _withdrawInOrder if no stack errors. address[] memory _positions, ERC20[] memory positionAssets, uint256[] memory positionBalances, uint256[] memory withdrawableBalances ) = _getData(); _takePerformanceFees(_totalAssets); _checkAllowance(owner, shares); // Check for rounding error since we round down in previewRedeem. if ((assets = _convertToAssets(shares, _totalAssets)) == 0) revert Cellar__ZeroAssets(); beforeWithdraw(assets, shares, receiver, owner); uint256 totalShares = totalSupply(); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); withdrawType == WithdrawType.ORDERLY ? _withdrawInOrder(assets, receiver, _positions, positionAssets, positionBalances, withdrawableBalances) : _withdrawInProportion(shares, totalShares, receiver, _positions, positionBalances, withdrawableBalances); afterWithdraw(assets, shares, receiver, owner); } /** * @dev Withdraw from positions in the order defined by `positions`. Used if the withdraw type * is `ORDERLY`. * @param assets the amount of assets to withdraw from cellar * @param receiver the address to sent withdrawn assets to * @param _positions positions to withdraw from * @param positionAssets underlying asset for each position * @param positionBalances underlying balances for each position */ function _withdrawInOrder( uint256 assets, address receiver, address[] memory _positions, ERC20[] memory positionAssets, uint256[] memory positionBalances, uint256[] memory withdrawableBalances ) internal { // Get the price router. PriceRouter priceRouter = PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)); for (uint256 i; i < _positions.length; i++) { // Move on to next position if this one is empty. if (positionBalances[i] == 0) continue; uint256 onePositionAsset = 10**positionAssets[i].decimals(); uint256 exchangeRate = priceRouter.getExchangeRate(positionAssets[i], asset); // Denominate withdrawable position balance in cellar's asset. uint256 totalWithdrawableBalanceInAssets = withdrawableBalances[i].mulDivDown( exchangeRate, onePositionAsset ); // We want to pull as much as we can from this position, but no more than needed. uint256 amount; if (totalWithdrawableBalanceInAssets > assets) { amount = assets.mulDivDown(onePositionAsset, exchangeRate); assets = 0; } else { amount = withdrawableBalances[i]; assets = assets - totalWithdrawableBalanceInAssets; } // Withdraw from position. _withdrawFrom(_positions[i], amount, receiver); emit PulledFromPosition(_positions[i], amount); // Stop if no more assets to withdraw. if (assets == 0) break; } // If withdraw did not remove all assets owed, revert. if (assets > 0) revert Cellar__IncompleteWithdraw(assets); } /** * @dev Withdraw from each position proportional to that of shares redeemed. Used if the * withdraw type is `PROPORTIONAL`. * @dev It is possible that the `amount` calculated to withdraw is zero. This is only a problem * for a low percision ERC20, which we have no plans to support. * @param shares the user is burning to withdraw * @param totalShares the total amount of oustanding shares * @param receiver the address to sent withdrawn assets to * @param _positions positions to withdraw from * @param positionBalances underlying balances for each position */ function _withdrawInProportion( uint256 shares, uint256 totalShares, address receiver, address[] memory _positions, uint256[] memory positionBalances, uint256[] memory withdrawableBalances ) internal { // Withdraw assets from positions in proportion to shares redeemed. for (uint256 i; i < _positions.length; i++) { address position = _positions[i]; uint256 positionBalance = positionBalances[i]; // Move on to next position if this one is empty. if (positionBalance == 0) continue; // Get the amount of assets to withdraw from this position based on proportion to shares redeemed. uint256 amount = positionBalance.mulDivDown(shares, totalShares); // If straetgist locks the enirety of a positions funds, then all withdraw calls revert. // If this happens, goverance should vote out malicious strategist, then change withdraw type to in oder, and move bad position to back of queue. if (amount > withdrawableBalances[i]) revert Cellar__IlliquidWithdraw(position); // Withdraw from position to receiver. _withdrawFrom(position, amount, receiver); emit PulledFromPosition(position, amount); } } // ========================================= ACCOUNTING LOGIC ========================================= /** * @notice The total amount of assets in the cellar. * @dev EIP4626 states totalAssets needs to be inclusive of fees. * Since performance fees mint shares, total assets remains unchanged, * so this implementation is inclusive of fees even though it does not explicitly show it. * @dev EIP4626 states totalAssets must not revert, but it is possible for `totalAssets` to revert * so it does NOT conform to ERC4626 standards. */ function totalAssets() public view override returns (uint256 assets) { uint256 numOfPositions = positions.length; ERC20[] memory positionAssets = new ERC20[](numOfPositions); uint256[] memory balances = new uint256[](numOfPositions); for (uint256 i; i < numOfPositions; i++) { address position = positions[i]; positionAssets[i] = _assetOf(position); balances[i] = _balanceOf(position); } PriceRouter priceRouter = PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)); assets = priceRouter.getValues(positionAssets, balances, asset); } /** * @notice The total amount of assets in the cellar. * @dev Excludes locked yield that hasn't been distributed. */ function totalAssetsWithdrawable() public view returns (uint256 assets) { uint256 numOfPositions = positions.length; ERC20[] memory positionAssets = new ERC20[](numOfPositions); uint256[] memory balances = new uint256[](numOfPositions); for (uint256 i; i < numOfPositions; i++) { address position = positions[i]; positionAssets[i] = _assetOf(position); balances[i] = _withdrawableFrom(position); } PriceRouter priceRouter = PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)); assets = priceRouter.getValues(positionAssets, balances, asset); } /** * @notice The amount of assets that the cellar would exchange for the amount of shares provided. * @notice is NOT inclusive of performance fees. * @param shares amount of shares to convert * @return assets the shares can be exchanged for */ function convertToAssets(uint256 shares) public view override returns (uint256 assets) { assets = _convertToAssets(shares, totalAssets()); } /** * @notice The amount of shares that the cellar would exchange for the amount of assets provided. * @param assets amount of assets to convert * @return shares the assets can be exchanged for */ function convertToShares(uint256 assets) public view override returns (uint256 shares) { shares = _convertToShares(assets, totalAssets()); } /** * @notice Simulate the effects of minting shares at the current block, given current on-chain conditions. * @param shares amount of shares to mint * @return assets that will be deposited */ function previewMint(uint256 shares) public view override returns (uint256 assets) { uint256 _totalAssets = totalAssets(); uint256 feeInAssets = _previewPerformanceFees(_totalAssets); assets = _previewMint(shares, _totalAssets - feeInAssets); } /** * @notice Simulate the effects of withdrawing assets at the current block, given current on-chain conditions. * @param assets amount of assets to withdraw * @return shares that will be redeemed */ function previewWithdraw(uint256 assets) public view override returns (uint256 shares) { uint256 _totalAssets = totalAssets(); uint256 feeInAssets = _previewPerformanceFees(_totalAssets); shares = _previewWithdraw(assets, _totalAssets - feeInAssets); } /** * @notice Simulate the effects of depositing assets at the current block, given current on-chain conditions. * @param assets amount of assets to deposit * @return shares that will be minted */ function previewDeposit(uint256 assets) public view override returns (uint256 shares) { uint256 _totalAssets = totalAssets(); uint256 feeInAssets = _previewPerformanceFees(_totalAssets); shares = _convertToShares(assets, _totalAssets - feeInAssets); } /** * @notice Simulate the effects of redeeming shares at the current block, given current on-chain conditions. * @param shares amount of shares to redeem * @return assets that will be returned */ function previewRedeem(uint256 shares) public view override returns (uint256 assets) { uint256 _totalAssets = totalAssets(); uint256 feeInAssets = _previewPerformanceFees(_totalAssets); assets = _convertToAssets(shares, _totalAssets - feeInAssets); } /** * @notice Finds the max amount of value an `owner` can remove from the cellar. * @param owner address of the user to find max value. * @param inShares if false, then returns value in terms of assets * if true then returns value in terms of shares */ function _findMax(address owner, bool inShares) internal view returns (uint256 maxOut) { // Check if owner shares are locked, return 0 if so. uint256 lockBlock = userShareLockStartBlock[owner]; if (lockBlock != 0) { uint256 blockSharesAreUnlocked = lockBlock + shareLockPeriod; if (blockSharesAreUnlocked > block.number) return 0; } // Get amount of assets to withdraw with fees accounted for. uint256 _totalAssets = totalAssets(); uint256 feeInAssets = _previewPerformanceFees(_totalAssets); uint256 assets = _convertToAssets(balanceOf(owner), _totalAssets - feeInAssets); if (withdrawType == WithdrawType.ORDERLY) { uint256 withdrawable = totalAssetsWithdrawable(); maxOut = assets <= withdrawable ? assets : withdrawable; } else { (, , , uint256[] memory positionBalances, uint256[] memory withdrawableBalances) = _getData(); uint256 totalShares = totalSupply(); uint256 shares = balanceOf(owner); uint256 smallestPercentWithdrawable = 1e18; for (uint256 i = 0; i < withdrawableBalances.length; i++) { if (positionBalances[i] == 0) continue; if (withdrawableBalances[i] == 0) return 0; uint256 percentWithdrawable = withdrawableBalances[i].mulDivDown(1e18, positionBalances[i]); if (percentWithdrawable < smallestPercentWithdrawable) smallestPercentWithdrawable = percentWithdrawable; } uint256 userOwnershipPercent = shares.mulDivDown(1e18, totalShares); maxOut = userOwnershipPercent <= smallestPercentWithdrawable ? assets : (_totalAssets - feeInAssets).mulDivDown(smallestPercentWithdrawable, 1e18); } if (inShares) maxOut = _convertToShares(maxOut, _totalAssets - feeInAssets); // else leave maxOut in terms of assets. } /** * @notice Returns the max amount withdrawable by a user inclusive of performance fees * @dev EIP4626 states maxWithdraw must not revert, but it is possible for `totalAssets` to revert * so it does NOT conform to ERC4626 standards. * @param owner address to check maxWithdraw of. * @return the max amount of assets withdrawable by `owner`. */ function maxWithdraw(address owner) public view override returns (uint256) { return _findMax(owner, false); } /** * @notice Returns the max amount shares redeemable by a user * @dev EIP4626 states maxRedeem must not revert, but it is possible for `totalAssets` to revert * so it does NOT conform to ERC4626 standards. * @param owner address to check maxRedeem of. * @return the max amount of shares redeemable by `owner`. */ function maxRedeem(address owner) public view override returns (uint256) { return _findMax(owner, true); } /** * @dev Used to more efficiently convert amount of shares to assets using a stored `totalAssets` value. */ function _convertToAssets(uint256 shares, uint256 _totalAssets) internal view returns (uint256 assets) { uint256 totalShares = totalSupply(); assets = totalShares == 0 ? shares.changeDecimals(18, asset.decimals()) : shares.mulDivDown(_totalAssets, totalShares); } /** * @dev Used to more efficiently convert amount of assets to shares using a stored `totalAssets` value. */ function _convertToShares(uint256 assets, uint256 _totalAssets) internal view returns (uint256 shares) { uint256 totalShares = totalSupply(); shares = totalShares == 0 ? assets.changeDecimals(asset.decimals(), 18) : assets.mulDivDown(totalShares, _totalAssets); } /** * @dev Used to more efficiently simulate minting shares using a stored `totalAssets` value. */ function _previewMint(uint256 shares, uint256 _totalAssets) internal view returns (uint256 assets) { uint256 totalShares = totalSupply(); assets = totalShares == 0 ? shares.changeDecimals(18, asset.decimals()) : shares.mulDivUp(_totalAssets, totalShares); } /** * @dev Used to more efficiently simulate withdrawing assets using a stored `totalAssets` value. */ function _previewWithdraw(uint256 assets, uint256 _totalAssets) internal view returns (uint256 shares) { uint256 totalShares = totalSupply(); shares = totalShares == 0 ? assets.changeDecimals(asset.decimals(), 18) : assets.mulDivUp(totalShares, _totalAssets); } /** * @dev Used to efficiently get and store accounting information to avoid having to expensively * recompute it. */ function _getData() internal view returns ( uint256 _totalAssets, address[] memory _positions, ERC20[] memory positionAssets, uint256[] memory positionBalances, uint256[] memory withdrawableBalances ) { uint256 len = positions.length; _positions = new address[](len); positionAssets = new ERC20[](len); positionBalances = new uint256[](len); positionBalances = new uint256[](len); withdrawableBalances = new uint256[](len); for (uint256 i; i < len; i++) { address position = positions[i]; _positions[i] = position; positionAssets[i] = _assetOf(position); positionBalances[i] = _balanceOf(position); withdrawableBalances[i] = _withdrawableFrom(position); } PriceRouter priceRouter = PriceRouter(registry.getAddress(PRICE_ROUTER_REGISTRY_SLOT)); _totalAssets = priceRouter.getValues(positionAssets, positionBalances, asset); } // =========================================== POSITION LOGIC =========================================== /** * @notice Emitted on rebalancing positions. * @param fromPosition the address of the position rebalanced from * @param toPosition the address of the position rebalanced to * @param assetsFrom the amount of assets withdrawn from the position rebalanced from * @param assetsTo the amount of assets desposited to the position rebalanced to */ event Rebalance(address indexed fromPosition, address indexed toPosition, uint256 assetsFrom, uint256 assetsTo); /** * @notice Emitted on when the rebalance deviation is changed. * @param oldDeviation the old rebalance deviation * @param newDeviation the new rebalance deviation */ event RebalanceDeviationChanged(uint256 oldDeviation, uint256 newDeviation); /** * @notice totalAssets deviated outside the range set by `allowedRebalanceDeviation`. * @param assets the total assets in the cellar * @param min the minimum allowed assets * @param max the maximum allowed assets */ error Cellar__TotalAssetDeviatedOutsideRange(uint256 assets, uint256 min, uint256 max); /** * @notice Total shares in a cellar changed when they should stay constant. * @param current the current amount of total shares * @param expected the expected amount of total shares */ error Cellar__TotalSharesMustRemainConstant(uint256 current, uint256 expected); /** * @notice Total shares in a cellar changed when they should stay constant. * @param requested the requested rebalance deviation * @param max the max rebalance deviation. */ error Cellar__InvalidRebalanceDeviation(uint256 requested, uint256 max); uint64 public constant MAX_REBALANCE_DEVIATION = 0.1e18; /** * @notice The percent the total assets of a cellar may deviate during a rebalance call. */ uint256 public allowedRebalanceDeviation = 0.003e18; // Currently set to 0.3% /** * @notice Allows governance to change this cellars rebalance deviation. * @param newDeviation the new reabalance deviation value. */ function setRebalanceDeviation(uint256 newDeviation) external onlyOwner { if (newDeviation > MAX_REBALANCE_DEVIATION) revert Cellar__InvalidRebalanceDeviation(newDeviation, MAX_REBALANCE_DEVIATION); uint256 oldDeviation = allowedRebalanceDeviation; allowedRebalanceDeviation = newDeviation; emit RebalanceDeviationChanged(oldDeviation, newDeviation); } /** * @notice Move assets between positions. To move assets from/to this cellar's holdings, specify * the address of this cellar as the `fromPosition`/`toPosition`. * @param fromPosition address of the position to move assets from * @param toPosition address of the position to move assets to * @param assetsFrom amount of assets to move from the from position */ function rebalance( address fromPosition, address toPosition, uint256 assetsFrom, SwapRouter.Exchange exchange, bytes calldata params ) external onlyOwner whenNotShutdown nonReentrant returns (uint256 assetsTo) { // Check that position being rebalanced to is currently being used. if (!isPositionUsed[toPosition]) revert Cellar__InvalidPosition(address(toPosition)); // Before making any external calls save the current `totalAssets` and `totalSupply`. uint256 assets = totalAssets(); uint256 totalShares = totalSupply(); // Withdraw from position. _withdrawFrom(fromPosition, assetsFrom, address(this)); // Swap to the asset of the other position if necessary. ERC20 fromAsset = _assetOf(fromPosition); ERC20 toAsset = _assetOf(toPosition); assetsTo = fromAsset != toAsset ? _swap(fromAsset, toAsset, assetsFrom, exchange, params, address(this)) : assetsFrom; // Deposit into position. _depositTo(toPosition, assetsTo); // After making every external call, check that the totalAssets haas not deviated significantly, and that totalShares is the same. uint256 minimumAllowedAssets = assets.mulDivUp((1e18 - allowedRebalanceDeviation), 1e18); uint256 maximumAllowedAssets = assets.mulDivDown((1e18 + allowedRebalanceDeviation), 1e18); assets = totalAssets(); if (assets > maximumAllowedAssets || assets < minimumAllowedAssets) revert Cellar__TotalAssetDeviatedOutsideRange(assets, minimumAllowedAssets, maximumAllowedAssets); if (totalShares != totalSupply()) revert Cellar__TotalSharesMustRemainConstant(totalSupply(), totalShares); emit Rebalance(fromPosition, toPosition, assetsFrom, assetsTo); } // ============================================ LIMITS LOGIC ============================================ /** * @notice Total amount of assets that can be deposited for a user. * @dev This function does not take into account performance fees. * Performance fees would reduce `receiver`s `ownedAssets`, * making the `assets` value returned lower than actual * @dev EIP4626 states maxDeposit must not revert, but it is possible for `totalAssets` to revert * so it does NOT conform to ERC4626 standards. * @param receiver address of account that would receive the shares * @return assets maximum amount of assets that can be deposited */ function maxDeposit(address receiver) public view override returns (uint256 assets) { if (isShutdown) return 0; uint256 asssetDepositLimit = depositLimit; uint256 asssetLiquidityLimit = liquidityLimit; if (asssetDepositLimit == type(uint256).max && asssetLiquidityLimit == type(uint256).max) return type(uint256).max; // Get data efficiently. uint256 _totalAssets = totalAssets(); uint256 ownedAssets = _convertToAssets(balanceOf(receiver), _totalAssets); uint256 leftUntilDepositLimit = asssetDepositLimit.subMinZero(ownedAssets); uint256 leftUntilLiquidityLimit = asssetLiquidityLimit.subMinZero(_totalAssets); // Only return the more relevant of the two. assets = Math.min(leftUntilDepositLimit, leftUntilLiquidityLimit); } /** * @notice Total amount of shares that can be minted for a user. * @dev This function does not take into account performance fees. * Performance fees would reduce `receiver`s `ownedAssets`, * making the `shares` value returned lower than actual * @dev EIP4626 states maxMint must not revert, but it is possible for `totalAssets` to revert * so it does NOT conform to ERC4626 standards. * @param receiver address of account that would receive the shares * @return shares maximum amount of shares that can be minted */ function maxMint(address receiver) public view override returns (uint256) { uint256 amount = maxDeposit(receiver); return amount == type(uint256).max ? amount : convertToShares(amount); } // ========================================= FEES LOGIC ========================================= /** * @notice Emitted when High Watermark is reset. * @param newHighWatermark new high watermark */ event HighWatermarkReset(uint256 newHighWatermark); /** * @notice Attempted to send fee shares to strategist payout address, when address is not set. */ error Cellar__PayoutNotSet(); /** * @notice Resets High Watermark to equal current total assets. * @notice This function can be abused by Strategists, so it should only be callable by governance. */ function resetHighWatermark() external onlyOwner { uint256 _totalAssets = totalAssets(); feeData.highWatermark = _totalAssets; emit HighWatermarkReset(_totalAssets); } /** * @notice Calculates how many assets Strategist would earn performance fees * @param _totalAssets uint256 value of the total assets in the cellar * @return feeInAssets amount of assets to take as fees */ function _previewPerformanceFees(uint256 _totalAssets) internal view returns (uint256 feeInAssets) { uint64 performanceFee = feeData.performanceFee; if (performanceFee == 0 || _totalAssets == 0) return 0; uint256 highWatermark = feeData.highWatermark; if (_totalAssets > highWatermark) { uint256 yield = _totalAssets - highWatermark; feeInAssets = yield.mulWadDown(performanceFee); } } /** * @notice Mints cellar performance fee shares if current share price is above high watermark * @dev If performance fees are minted, the resulting HWM will be greater than the current share price * since performance fees dilute share value. * @param _totalAssets uint256 value of the total assets in the cellar */ function _takePerformanceFees(uint256 _totalAssets) internal { uint256 feeInAssets = _previewPerformanceFees(_totalAssets); if (feeInAssets > 0) { uint256 platformFeesInShares = _convertToFees(_convertToShares(feeInAssets, _totalAssets)); if (platformFeesInShares > 0) { feeData.highWatermark = _totalAssets; _mint(address(this), platformFeesInShares); } } } /** * @dev Calculate the amount of fees to mint such that value of fees after minting is not diluted. */ function _convertToFees(uint256 feesInShares) internal view returns (uint256 fees) { // Saves an SLOAD. uint256 totalShares = totalSupply(); // Get the amount of fees to mint. Without this, the value of fees minted would be slightly // diluted because total shares increased while total assets did not. This counteracts that. if (totalShares > feesInShares) { // Denominator is greater than zero uint256 denominator = totalShares - feesInShares; fees = feesInShares.mulDivUp(totalShares, denominator); } // If denominator is less than or equal to zero, `fees` should be zero. } /** * @notice Emitted when platform fees are send to the Sommelier chain. * @param feesInSharesRedeemed amount of fees redeemed for assets to send * @param feesInAssetsSent amount of assets fees were redeemed for that were sent */ event SendFees(uint256 feesInSharesRedeemed, uint256 feesInAssetsSent); /** * @notice Transfer accrued fees to the Sommelier chain to distribute. * @dev Fees are accrued as shares and redeemed upon transfer. * @dev assumes cellar's accounting asset is able to be transferred and sent to Cosmos */ function sendFees() external nonReentrant { address strategistPayoutAddress = feeData.strategistPayoutAddress; if (strategistPayoutAddress == address(0)) revert Cellar__PayoutNotSet(); uint256 _totalAssets = totalAssets(); // Since this action mints shares, calculate outstanding performance fees due. _takePerformanceFees(_totalAssets); uint256 totalFees = balanceOf(address(this)); uint256 strategistFeeSharesDue = totalFees.mulWadDown(feeData.strategistPerformanceCut); // Calculate platform fees earned. uint256 elapsedTime = block.timestamp - lastAccrual; uint256 platformFeeInAssets = (_totalAssets * elapsedTime * feeData.platformFee) / 1e18 / 365 days; uint256 platformFees = _convertToFees(_convertToShares(platformFeeInAssets, _totalAssets)); _mint(address(this), platformFees); totalFees += platformFees; strategistFeeSharesDue += platformFees.mulWadDown(feeData.strategistPlatformCut); if (strategistFeeSharesDue > 0) { //transfer shares to strategist _transfer(address(this), strategistPayoutAddress, strategistFeeSharesDue); totalFees -= strategistFeeSharesDue; } lastAccrual = uint32(block.timestamp); // Redeem our fee shares for assets to send to the fee distributor module. uint256 assets = _convertToAssets(totalFees, _totalAssets); if (assets > 0) { // Without this, assets paid out as fees would be counted as a loss. feeData.highWatermark -= assets; _burn(address(this), totalFees); // Transfer assets to a fee distributor on the Sommelier chain. IGravity gravityBridge = IGravity(registry.getAddress(0)); asset.safeApprove(address(gravityBridge), assets); gravityBridge.sendToCosmos(address(asset), feeData.feesDistributor, assets); } emit SendFees(totalFees, assets); } // ========================================== HELPER FUNCTIONS ========================================== /** * @dev Deposit into a position according to its position type and update related state. * @param position address to deposit funds into * @param assets the amount of assets to deposit into the position */ function _depositTo(address position, uint256 assets) internal { PositionType positionType = getPositionType[position]; // Deposit into position. if (positionType == PositionType.ERC4626 || positionType == PositionType.Cellar) { ERC4626(position).asset().safeApprove(position, assets); ERC4626(position).deposit(assets, address(this)); } } /** * @dev Withdraw from a position according to its position type and update related state. * @param position address to withdraw funds from * @param assets the amount of assets to withdraw from the position * @param receiver the address to sent withdrawn assets to */ function _withdrawFrom( address position, uint256 assets, address receiver ) internal { PositionType positionType = getPositionType[position]; // Withdraw from position. if (positionType == PositionType.ERC4626 || positionType == PositionType.Cellar) { ERC4626(position).withdraw(assets, receiver, address(this)); } else { if (receiver != address(this)) ERC20(position).safeTransfer(receiver, assets); } } /** * @dev Get the withdrawable balance of a position according to its position type. * @param position position to get the withdrawable balance of */ function _withdrawableFrom(address position) internal view returns (uint256) { PositionType positionType = getPositionType[position]; if (positionType == PositionType.ERC4626 || positionType == PositionType.Cellar) { return ERC4626(position).maxWithdraw(address(this)); } else { return ERC20(position).balanceOf(address(this)); } } /** * @dev Get the balance of a position according to its position type. * @dev For ERC4626 position balances, this uses `previewRedeem` as opposed * to `convertToAssets` so that balanceOf ERC4626 positions includes fees taken on withdraw. * @param position position to get the balance of */ function _balanceOf(address position) internal view returns (uint256) { PositionType positionType = getPositionType[position]; if (positionType == PositionType.ERC4626 || positionType == PositionType.Cellar) { return ERC4626(position).previewRedeem(ERC4626(position).balanceOf(address(this))); } else { return ERC20(position).balanceOf(address(this)); } } /** * @dev Get the asset of a position according to its position type. * @param position to get the asset of */ function _assetOf(address position) internal view returns (ERC20) { PositionType positionType = getPositionType[position]; if (positionType == PositionType.ERC4626 || positionType == PositionType.Cellar) { return ERC4626(position).asset(); } else { return ERC20(position); } } /** * @notice Attempted to swap with bad parameters. */ error Cellar__WrongSwapParams(); /** * @dev Perform a swap using the swap router and check that it behaves as expected. * @param assetIn the asset to sell * @param amountIn the amount of `assetIn` to sell * @param exchange the exchange to sell `assetIn` on * @param params Abi encoded swap parameters dependent on the `exchange` selected. * Refer to SwapRouter.sol for `params` makeup * @param receiver the address to send the swapped assets to */ function _swap( ERC20 assetIn, ERC20 assetOut, uint256 amountIn, SwapRouter.Exchange exchange, bytes calldata params, address receiver ) internal returns (uint256 amountOut) { // Store the expected amount of the asset in that we expect to have after the swap. uint256 expectedAssetsInAfter = assetIn.balanceOf(address(this)) - amountIn; // Get the address of the latest swap router. SwapRouter swapRouter = SwapRouter(registry.getAddress(1)); // Approve swap router to swap assets. assetIn.safeApprove(address(swapRouter), amountIn); // Perform swap. amountOut = swapRouter.swap(exchange, params, receiver, assetIn, assetOut); // Check that the amount of assets swapped is what is expected. Will revert if the `params` // specified a different amount of assets to swap then `amountIn`. if (assetIn.balanceOf(address(this)) != expectedAssetsInAfter) revert Cellar__WrongSwapParams(); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import { ERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol"; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { Math } from "src/utils/Math.sol"; /// @notice Minimal ERC4626 tokenized Vault implementation. /// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/mixins/ERC4626.sol) abstract contract ERC4626 is ERC20, ERC20Permit { using SafeERC20 for ERC20; using Math for uint256; /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Deposit(address indexed caller, address indexed owner, uint256 assets, uint256 shares); event Withdraw( address indexed caller, address indexed receiver, address indexed owner, uint256 assets, uint256 shares ); /*////////////////////////////////////////////////////////////// IMMUTABLES //////////////////////////////////////////////////////////////*/ ERC20 public immutable asset; constructor( ERC20 _asset, string memory _name, string memory _symbol ) ERC20(_name, _symbol) ERC20Permit(_name) { asset = _asset; } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LOGIC //////////////////////////////////////////////////////////////*/ function deposit(uint256 assets, address receiver) public virtual returns (uint256 shares) { // Check for rounding error since we round down in previewDeposit. require((shares = previewDeposit(assets)) != 0, "ZERO_SHARES"); beforeDeposit(assets, shares, receiver); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares, receiver); } function mint(uint256 shares, address receiver) public virtual returns (uint256 assets) { assets = previewMint(shares); // No need to check for rounding error, previewMint rounds up. beforeDeposit(assets, shares, receiver); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares, receiver); } function withdraw( uint256 assets, address receiver, address owner ) public virtual returns (uint256 shares) { shares = previewWithdraw(assets); // No need to check for rounding error, previewWithdraw rounds up. if (msg.sender != owner) { _spendAllowance(owner, msg.sender, shares); } beforeWithdraw(assets, shares, receiver, owner); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); afterWithdraw(assets, shares, receiver, owner); } function redeem( uint256 shares, address receiver, address owner ) public virtual returns (uint256 assets) { if (msg.sender != owner) { _spendAllowance(owner, msg.sender, shares); } // Check for rounding error since we round down in previewRedeem. require((assets = previewRedeem(shares)) != 0, "ZERO_ASSETS"); beforeWithdraw(assets, shares, receiver, owner); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); afterWithdraw(assets, shares, receiver, owner); } /*////////////////////////////////////////////////////////////// ACCOUNTING LOGIC //////////////////////////////////////////////////////////////*/ function totalAssets() public view virtual returns (uint256); function convertToShares(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply(); // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivDown(supply, totalAssets()); } function convertToAssets(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply(); // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivDown(totalAssets(), supply); } function previewDeposit(uint256 assets) public view virtual returns (uint256) { return convertToShares(assets); } function previewMint(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply(); // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivUp(totalAssets(), supply); } function previewWithdraw(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply(); // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivUp(supply, totalAssets()); } function previewRedeem(uint256 shares) public view virtual returns (uint256) { return convertToAssets(shares); } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LIMIT LOGIC //////////////////////////////////////////////////////////////*/ function maxDeposit(address) public view virtual returns (uint256) { return type(uint256).max; } function maxMint(address) public view virtual returns (uint256) { return type(uint256).max; } function maxWithdraw(address owner) public view virtual returns (uint256) { return convertToAssets(balanceOf(owner)); } function maxRedeem(address owner) public view virtual returns (uint256) { return balanceOf(owner); } /*////////////////////////////////////////////////////////////// INTERNAL HOOKS LOGIC //////////////////////////////////////////////////////////////*/ function beforeDeposit( uint256 assets, uint256 shares, address receiver ) internal virtual {} function afterDeposit( uint256 assets, uint256 shares, address receiver ) internal virtual {} function beforeWithdraw( uint256 assets, uint256 shares, address receiver, address owner ) internal virtual {} function afterWithdraw( uint256 assets, uint256 shares, address receiver, address owner ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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 (last updated v4.4.1) (utils/math/SafeCast.sol) pragma solidity ^0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toUint248(uint256 value) internal pure returns (uint248) { require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits"); return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toUint240(uint256 value) internal pure returns (uint240) { require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits"); return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toUint232(uint256 value) internal pure returns (uint232) { require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits"); return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.2._ */ function toUint224(uint256 value) internal pure returns (uint224) { require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits"); return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toUint216(uint256 value) internal pure returns (uint216) { require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits"); return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toUint208(uint256 value) internal pure returns (uint208) { require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits"); return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toUint200(uint256 value) internal pure returns (uint200) { require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits"); return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toUint192(uint256 value) internal pure returns (uint192) { require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits"); return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toUint184(uint256 value) internal pure returns (uint184) { require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits"); return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toUint176(uint256 value) internal pure returns (uint176) { require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits"); return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toUint168(uint256 value) internal pure returns (uint168) { require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits"); return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toUint160(uint256 value) internal pure returns (uint160) { require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits"); return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toUint152(uint256 value) internal pure returns (uint152) { require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits"); return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toUint144(uint256 value) internal pure returns (uint144) { require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits"); return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toUint136(uint256 value) internal pure returns (uint136) { require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits"); return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v2.5._ */ function toUint128(uint256 value) internal pure returns (uint128) { require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toUint120(uint256 value) internal pure returns (uint120) { require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits"); return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toUint112(uint256 value) internal pure returns (uint112) { require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits"); return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toUint104(uint256 value) internal pure returns (uint104) { require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits"); return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.2._ */ function toUint96(uint256 value) internal pure returns (uint96) { require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits"); return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toUint88(uint256 value) internal pure returns (uint88) { require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits"); return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toUint80(uint256 value) internal pure returns (uint80) { require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits"); return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toUint72(uint256 value) internal pure returns (uint72) { require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits"); return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v2.5._ */ function toUint64(uint256 value) internal pure returns (uint64) { require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toUint56(uint256 value) internal pure returns (uint56) { require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits"); return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toUint48(uint256 value) internal pure returns (uint48) { require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits"); return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toUint40(uint256 value) internal pure returns (uint40) { require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits"); return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v2.5._ */ function toUint32(uint256 value) internal pure returns (uint32) { require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toUint24(uint256 value) internal pure returns (uint24) { require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits"); return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v2.5._ */ function toUint16(uint256 value) internal pure returns (uint16) { require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v2.5._ */ function toUint8(uint256 value) internal pure returns (uint8) { require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. * * _Available since v3.0._ */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toInt248(int256 value) internal pure returns (int248) { require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits"); return int248(value); } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toInt240(int256 value) internal pure returns (int240) { require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits"); return int240(value); } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toInt232(int256 value) internal pure returns (int232) { require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits"); return int232(value); } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.7._ */ function toInt224(int256 value) internal pure returns (int224) { require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits"); return int224(value); } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toInt216(int256 value) internal pure returns (int216) { require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits"); return int216(value); } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toInt208(int256 value) internal pure returns (int208) { require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits"); return int208(value); } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toInt200(int256 value) internal pure returns (int200) { require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits"); return int200(value); } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toInt192(int256 value) internal pure returns (int192) { require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits"); return int192(value); } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toInt184(int256 value) internal pure returns (int184) { require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits"); return int184(value); } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toInt176(int256 value) internal pure returns (int176) { require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits"); return int176(value); } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toInt168(int256 value) internal pure returns (int168) { require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits"); return int168(value); } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toInt160(int256 value) internal pure returns (int160) { require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits"); return int160(value); } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toInt152(int256 value) internal pure returns (int152) { require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits"); return int152(value); } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toInt144(int256 value) internal pure returns (int144) { require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits"); return int144(value); } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toInt136(int256 value) internal pure returns (int136) { require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits"); return int136(value); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128) { require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits"); return int128(value); } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toInt120(int256 value) internal pure returns (int120) { require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits"); return int120(value); } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toInt112(int256 value) internal pure returns (int112) { require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits"); return int112(value); } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toInt104(int256 value) internal pure returns (int104) { require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits"); return int104(value); } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.7._ */ function toInt96(int256 value) internal pure returns (int96) { require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits"); return int96(value); } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toInt88(int256 value) internal pure returns (int88) { require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits"); return int88(value); } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toInt80(int256 value) internal pure returns (int80) { require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits"); return int80(value); } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toInt72(int256 value) internal pure returns (int72) { require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits"); return int72(value); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64) { require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits"); return int64(value); } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toInt56(int256 value) internal pure returns (int56) { require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits"); return int56(value); } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toInt48(int256 value) internal pure returns (int48) { require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits"); return int48(value); } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toInt40(int256 value) internal pure returns (int40) { require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits"); return int40(value); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32) { require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits"); return int32(value); } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toInt24(int256 value) internal pure returns (int24) { require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits"); return int24(value); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16) { require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits"); return int16(value); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8) { require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits"); return int8(value); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. * * _Available since v3.0._ */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256"); return int256(value); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; contract Registry is Ownable { // ============================================= ADDRESS CONFIG ============================================= /** * @notice Emitted when the address of a contract is changed. * @param id value representing the unique ID tied to the changed contract * @param oldAddress address of the contract before the change * @param newAddress address of the contract after the contract */ event AddressChanged(uint256 indexed id, address oldAddress, address newAddress); /** * @notice Attempted to set the address of a contract that is not registered. * @param id id of the contract that is not registered */ error Registry__ContractNotRegistered(uint256 id); /** * @notice Emitted when depositor privilege changes. * @param depositor depositor address * @param state the new state of the depositor privilege */ event DepositorOnBehalfChanged(address depositor, bool state); /** * @notice The unique ID that the next registered contract will have. */ uint256 public nextId; /** * @notice Get the address associated with an id. */ mapping(uint256 => address) public getAddress; /** * @notice In order for an address to make deposits on behalf of users they must be approved. */ mapping(address => bool) public approvedForDepositOnBehalf; /** * @notice toggles a depositors ability to deposit into cellars on behalf of users. */ function setApprovedForDepositOnBehalf(address depositor, bool state) external onlyOwner { approvedForDepositOnBehalf[depositor] = state; emit DepositorOnBehalfChanged(depositor, state); } /** * @notice Set the address of the contract at a given id. */ function setAddress(uint256 id, address newAddress) external onlyOwner { if (id >= nextId) revert Registry__ContractNotRegistered(id); emit AddressChanged(id, getAddress[id], newAddress); getAddress[id] = newAddress; } // ============================================= INITIALIZATION ============================================= /** * @param gravityBridge address of GravityBridge contract * @param swapRouter address of SwapRouter contract * @param priceRouter address of PriceRouter contract */ constructor( address gravityBridge, address swapRouter, address priceRouter ) Ownable() { _register(gravityBridge); _register(swapRouter); _register(priceRouter); } // ============================================ REGISTER CONFIG ============================================ /** * @notice Emitted when a new contract is registered. * @param id value representing the unique ID tied to the new contract * @param newContract address of the new contract */ event Registered(uint256 indexed id, address indexed newContract); /** * @notice Register the address of a new contract. * @param newContract address of the new contract to register */ function register(address newContract) external onlyOwner { _register(newContract); } function _register(address newContract) internal { getAddress[nextId] = newContract; emit Registered(nextId, newContract); nextId++; } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import { Multicall } from "src/base/Multicall.sol"; import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { IUniswapV2Router02 as IUniswapV2Router } from "src/interfaces/external/IUniswapV2Router02.sol"; import { IUniswapV3Router } from "src/interfaces/external/IUniswapV3Router.sol"; /** * @title Sommelier Swap Router * @notice Provides a universal interface allowing Sommelier contracts to interact with multiple * different exchanges to perform swaps. * @dev Perform multiple swaps using Multicall. * @author crispymangoes, Brian Le */ contract SwapRouter is Multicall { using SafeERC20 for ERC20; /** * @param UNIV2 Uniswap V2 * @param UNIV3 Uniswap V3 */ enum Exchange { UNIV2, UNIV3 } /** * @notice Get the selector of the function to call in order to perform swap with a given exchange. */ mapping(Exchange => bytes4) public getExchangeSelector; // ========================================== CONSTRUCTOR ========================================== /** * @notice Uniswap V2 swap router contract. */ IUniswapV2Router public immutable uniswapV2Router; // 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D /** * @notice Uniswap V3 swap router contract. */ IUniswapV3Router public immutable uniswapV3Router; // 0xE592427A0AEce92De3Edee1F18E0157C05861564 /** * @param _uniswapV2Router address of the Uniswap V2 swap router contract * @param _uniswapV3Router address of the Uniswap V3 swap router contract */ constructor(IUniswapV2Router _uniswapV2Router, IUniswapV3Router _uniswapV3Router) { // Set up all exchanges. uniswapV2Router = _uniswapV2Router; uniswapV3Router = _uniswapV3Router; // Set up mapping between IDs and selectors. getExchangeSelector[Exchange.UNIV2] = SwapRouter(this).swapWithUniV2.selector; getExchangeSelector[Exchange.UNIV3] = SwapRouter(this).swapWithUniV3.selector; } // ======================================= SWAP OPERATIONS ======================================= /** * @notice Attempted to perform a swap that reverted without a message. */ error SwapRouter__SwapReverted(); /** * @notice Attempted to perform a swap with mismatched assetIn and swap data. * @param actual the address encoded into the swap data * @param expected the address passed in with assetIn */ error SwapRouter__AssetInMisMatch(address actual, address expected); /** * @notice Attempted to perform a swap with mismatched assetOut and swap data. * @param actual the address encoded into the swap data * @param expected the address passed in with assetIn */ error SwapRouter__AssetOutMisMatch(address actual, address expected); /** * @notice Perform a swap using a supported exchange. * @param exchange value dictating which exchange to use to make the swap * @param swapData encoded data used for the swap * @param receiver address to send the received assets to * @return amountOut amount of assets received from the swap */ function swap( Exchange exchange, bytes memory swapData, address receiver, ERC20 assetIn, ERC20 assetOut ) external returns (uint256 amountOut) { // Route swap call to appropriate function using selector. (bool success, bytes memory result) = address(this).delegatecall( abi.encodeWithSelector(getExchangeSelector[exchange], swapData, receiver, assetIn, assetOut) ); if (!success) { // If there is return data, the call reverted with a reason or a custom error so we // bubble up the error message. if (result.length > 0) { assembly { let returndata_size := mload(result) revert(add(32, result), returndata_size) } } else { revert SwapRouter__SwapReverted(); } } amountOut = abi.decode(result, (uint256)); } /** * @notice Perform a swap using Uniswap V2. * @param swapData bytes variable storing the following swap information: * address[] path: array of addresses dictating what swap path to follow * uint256 amount: amount of the first asset in the path to swap * uint256 amountOutMin: the minimum amount of the last asset in the path to receive * @param receiver address to send the received assets to * @return amountOut amount of assets received from the swap */ function swapWithUniV2( bytes memory swapData, address receiver, ERC20 assetIn, ERC20 assetOut ) public returns (uint256 amountOut) { (address[] memory path, uint256 amount, uint256 amountOutMin) = abi.decode( swapData, (address[], uint256, uint256) ); // Check that path matches assetIn and assetOut. if (assetIn != ERC20(path[0])) revert SwapRouter__AssetInMisMatch(path[0], address(assetIn)); if (assetOut != ERC20(path[path.length - 1])) revert SwapRouter__AssetOutMisMatch(path[path.length - 1], address(assetOut)); // Transfer assets to this contract to swap. assetIn.safeTransferFrom(msg.sender, address(this), amount); // Approve assets to be swapped through the router. assetIn.safeApprove(address(uniswapV2Router), amount); // Execute the swap. uint256[] memory amountsOut = uniswapV2Router.swapExactTokensForTokens( amount, amountOutMin, path, receiver, block.timestamp + 60 ); amountOut = amountsOut[amountsOut.length - 1]; } /** * @notice Perform a swap using Uniswap V3. * @param swapData bytes variable storing the following swap information * address[] path: array of addresses dictating what swap path to follow * uint24[] poolFees: array of pool fees dictating what swap pools to use * uint256 amount: amount of the first asset in the path to swap * uint256 amountOutMin: the minimum amount of the last asset in the path to receive * @param receiver address to send the received assets to * @return amountOut amount of assets received from the swap */ function swapWithUniV3( bytes memory swapData, address receiver, ERC20 assetIn, ERC20 assetOut ) public returns (uint256 amountOut) { (address[] memory path, uint24[] memory poolFees, uint256 amount, uint256 amountOutMin) = abi.decode( swapData, (address[], uint24[], uint256, uint256) ); // Check that path matches assetIn and assetOut. if (assetIn != ERC20(path[0])) revert SwapRouter__AssetInMisMatch(path[0], address(assetIn)); if (assetOut != ERC20(path[path.length - 1])) revert SwapRouter__AssetOutMisMatch(path[path.length - 1], address(assetOut)); // Transfer assets to this contract to swap. assetIn.safeTransferFrom(msg.sender, address(this), amount); // Approve assets to be swapped through the router. assetIn.safeApprove(address(uniswapV3Router), amount); // Encode swap parameters. bytes memory encodePackedPath = abi.encodePacked(address(assetIn)); for (uint256 i = 1; i < path.length; i++) encodePackedPath = abi.encodePacked(encodePackedPath, poolFees[i - 1], path[i]); // Execute the swap. amountOut = uniswapV3Router.exactInput( IUniswapV3Router.ExactInputParams({ path: encodePackedPath, recipient: receiver, deadline: block.timestamp + 60, amountIn: amount, amountOutMinimum: amountOutMin }) ); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { FeedRegistryInterface } from "@chainlink/contracts/src/v0.8/interfaces/FeedRegistryInterface.sol"; import { AggregatorV2V3Interface } from "@chainlink/contracts/src/v0.8/interfaces/AggregatorV2V3Interface.sol"; import { IChainlinkAggregator } from "src/interfaces/external/IChainlinkAggregator.sol"; import { Denominations } from "@chainlink/contracts/src/v0.8/Denominations.sol"; import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol"; import { Math } from "src/utils/Math.sol"; /** * @title Sommelier Price Router * @notice Provides a universal interface allowing Sommelier contracts to retrieve secure pricing * data from Chainlink. * @author crispymangoes, Brian Le */ contract PriceRouter is Ownable { using SafeERC20 for ERC20; using SafeCast for int256; using Math for uint256; event AddAsset(address indexed asset); // =========================================== ASSETS CONFIG =========================================== /** * @param minPrice minimum price in USD for the asset before reverting * @param maxPrice maximum price in USD for the asset before reverting * @param isPriceRangeInETH if true price range values are given in ETH, if false price range is given in USD * @param heartbeat maximum allowed time that can pass with no update before price data is considered stale * @param isSupported whether this asset is supported by the platform or not */ struct AssetConfig { uint256 minPrice; uint256 maxPrice; bool isPriceRangeInETH; uint96 heartbeat; bool isSupported; } /** * @notice Get the asset data for a given asset. */ mapping(ERC20 => AssetConfig) public getAssetConfig; uint96 public constant DEFAULT_HEART_BEAT = 1 days; // ======================================= ADAPTOR OPERATIONS ======================================= /** * @notice Attempted to set a minimum price below the Chainlink minimum price (with buffer). * @param minPrice minimum price attempted to set * @param bufferedMinPrice minimum price that can be set including buffer */ error PriceRouter__InvalidMinPrice(uint256 minPrice, uint256 bufferedMinPrice); /** * @notice Attempted to set a maximum price above the Chainlink maximum price (with buffer). * @param maxPrice maximum price attempted to set * @param bufferedMaxPrice maximum price that can be set including buffer */ error PriceRouter__InvalidMaxPrice(uint256 maxPrice, uint256 bufferedMaxPrice); /** * @notice Attempted to add an invalid asset. * @param asset address of the invalid asset */ error PriceRouter__InvalidAsset(address asset); /** * @notice Attempted to add an asset with a certain price range denomination, but actual denomination was different. * @param expected price range denomination * @param actual price range denomination * @dev If an asset has price feeds in USD and ETH, the feed in USD is favored */ error PriceRouter__PriceRangeDenominationMisMatch(bool expected, bool actual); /** * @notice Attempted to add an asset with invalid min/max prices. * @param min price * @param max price */ error PriceRouter__MinPriceGreaterThanMaxPrice(uint256 min, uint256 max); /** * @notice Add an asset for the price router to support. * @param asset address of asset to support on the platform * @param minPrice minimum price in USD with 8 decimals for the asset before reverting, * set to `0` to use Chainlink's default * @param maxPrice maximum price in USD with 8 decimals for the asset before reverting, * set to `0` to use Chainlink's default * @param heartbeat maximum amount of time that can pass without the price data being updated * before reverting, set to `0` to use the default of 1 day */ function addAsset( ERC20 asset, uint256 minPrice, uint256 maxPrice, bool rangeInETH, uint96 heartbeat ) external onlyOwner { if (address(asset) == address(0)) revert PriceRouter__InvalidAsset(address(asset)); // Use Chainlink to get the min and max of the asset. ERC20 assetToQuery = _remap(asset); (uint256 minFromChainklink, uint256 maxFromChainlink, bool isETH) = _getPriceRange(assetToQuery); // Check if callers expected price range denomination matches actual. if (rangeInETH != isETH) revert PriceRouter__PriceRangeDenominationMisMatch(rangeInETH, isETH); // Add a ~10% buffer to minimum and maximum price from Chainlink because Chainlink can stop updating // its price before/above the min/max price. uint256 bufferedMinPrice = minFromChainklink.mulWadDown(1.1e18); uint256 bufferedMaxPrice = maxFromChainlink.mulWadDown(0.9e18); if (minPrice == 0) { minPrice = bufferedMinPrice; } else { if (minPrice < bufferedMinPrice) revert PriceRouter__InvalidMinPrice(minPrice, bufferedMinPrice); } if (maxPrice == 0) { maxPrice = bufferedMaxPrice; } else { if (maxPrice > bufferedMaxPrice) revert PriceRouter__InvalidMaxPrice(maxPrice, bufferedMaxPrice); } if (minPrice >= maxPrice) revert PriceRouter__MinPriceGreaterThanMaxPrice(minPrice, maxPrice); getAssetConfig[asset] = AssetConfig({ minPrice: minPrice, maxPrice: maxPrice, isPriceRangeInETH: isETH, heartbeat: heartbeat != 0 ? heartbeat : DEFAULT_HEART_BEAT, isSupported: true }); emit AddAsset(address(asset)); } function isSupported(ERC20 asset) external view returns (bool) { return getAssetConfig[asset].isSupported; } // ======================================= PRICING OPERATIONS ======================================= /** * @notice Get the value of an asset in terms of another asset. * @param baseAsset address of the asset to get the price of in terms of the quote asset * @param amount amount of the base asset to price * @param quoteAsset address of the asset that the base asset is priced in terms of * @return value value of the amount of base assets specified in terms of the quote asset */ function getValue( ERC20 baseAsset, uint256 amount, ERC20 quoteAsset ) external view returns (uint256 value) { value = amount.mulDivDown(getExchangeRate(baseAsset, quoteAsset), 10**baseAsset.decimals()); } /** * @notice Attempted an operation with arrays of unequal lengths that were expected to be equal length. */ error PriceRouter__LengthMismatch(); /** * @notice Get the total value of multiple assets in terms of another asset. * @param baseAssets addresses of the assets to get the price of in terms of the quote asset * @param amounts amounts of each base asset to price * @param quoteAsset address of the assets that the base asset is priced in terms of * @return value total value of the amounts of each base assets specified in terms of the quote asset */ function getValues( ERC20[] memory baseAssets, uint256[] memory amounts, ERC20 quoteAsset ) external view returns (uint256 value) { uint256 numOfAssets = baseAssets.length; if (numOfAssets != amounts.length) revert PriceRouter__LengthMismatch(); uint8 quoteAssetDecimals = quoteAsset.decimals(); for (uint256 i; i < numOfAssets; i++) { ERC20 baseAsset = baseAssets[i]; value += amounts[i].mulDivDown( _getExchangeRate(baseAsset, quoteAsset, quoteAssetDecimals), 10**baseAsset.decimals() ); } } /** * @notice Get the exchange rate between two assets. * @param baseAsset address of the asset to get the exchange rate of in terms of the quote asset * @param quoteAsset address of the asset that the base asset is exchanged for * @return exchangeRate rate of exchange between the base asset and the quote asset */ function getExchangeRate(ERC20 baseAsset, ERC20 quoteAsset) public view returns (uint256 exchangeRate) { exchangeRate = _getExchangeRate(baseAsset, quoteAsset, quoteAsset.decimals()); } /** * @notice Get the exchange rates between multiple assets and another asset. * @param baseAssets addresses of the assets to get the exchange rates of in terms of the quote asset * @param quoteAsset address of the asset that the base assets are exchanged for * @return exchangeRates rate of exchange between the base assets and the quote asset */ function getExchangeRates(ERC20[] memory baseAssets, ERC20 quoteAsset) external view returns (uint256[] memory exchangeRates) { uint8 quoteAssetDecimals = quoteAsset.decimals(); uint256 numOfAssets = baseAssets.length; exchangeRates = new uint256[](numOfAssets); for (uint256 i; i < numOfAssets; i++) exchangeRates[i] = _getExchangeRate(baseAssets[i], quoteAsset, quoteAssetDecimals); } /** * @notice Get the minimum and maximum valid price for an asset. * @param asset address of the asset to get the price range of * @return min minimum valid price for the asset * @return max maximum valid price for the asset */ function getPriceRange(ERC20 asset) public view returns ( uint256 min, uint256 max, bool isETH ) { AssetConfig memory config = getAssetConfig[asset]; if (!config.isSupported) revert PriceRouter__UnsupportedAsset(address(asset)); (min, max, isETH) = (config.minPrice, config.maxPrice, config.isPriceRangeInETH); } /** * @notice Get the minimum and maximum valid prices for an asset. * @param _assets addresses of the assets to get the price ranges for * @return min minimum valid price for each asset * @return max maximum valid price for each asset */ function getPriceRanges(ERC20[] memory _assets) external view returns ( uint256[] memory min, uint256[] memory max, bool[] memory isETH ) { uint256 numOfAssets = _assets.length; (min, max, isETH) = (new uint256[](numOfAssets), new uint256[](numOfAssets), new bool[](numOfAssets)); for (uint256 i; i < numOfAssets; i++) (min[i], max[i], isETH[i]) = getPriceRange(_assets[i]); } // =========================================== HELPER FUNCTIONS =========================================== ERC20 private constant WETH = ERC20(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2); ERC20 private constant WBTC = ERC20(0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599); function _remap(ERC20 asset) internal pure returns (ERC20) { if (asset == WETH) return ERC20(Denominations.ETH); if (asset == WBTC) return ERC20(Denominations.BTC); return asset; } /** * @notice Gets the exchange rate between a base and a quote asset * @param baseAsset the asset to convert into quoteAsset * @param quoteAsset the asset base asset is converted into * @return exchangeRate value of base asset in terms of quote asset */ function _getExchangeRate( ERC20 baseAsset, ERC20 quoteAsset, uint8 quoteAssetDecimals ) internal view returns (uint256 exchangeRate) { exchangeRate = getValueInUSD(baseAsset).mulDivDown(10**quoteAssetDecimals, getValueInUSD(quoteAsset)); } /** * @notice Attempted to update the asset to one that is not supported by the platform. * @param asset address of the unsupported asset */ error PriceRouter__UnsupportedAsset(address asset); /** * @notice Attempted an operation to price an asset that under its minimum valid price. * @param asset address of the asset that is under its minimum valid price * @param price price of the asset * @param minPrice minimum valid price of the asset */ error PriceRouter__AssetBelowMinPrice(address asset, uint256 price, uint256 minPrice); /** * @notice Attempted an operation to price an asset that under its maximum valid price. * @param asset address of the asset that is under its maximum valid price * @param price price of the asset * @param maxPrice maximum valid price of the asset */ error PriceRouter__AssetAboveMaxPrice(address asset, uint256 price, uint256 maxPrice); /** * @notice Attempted to fetch a price for an asset that has not been updated in too long. * @param asset address of the asset thats price is stale * @param timeSinceLastUpdate seconds since the last price update * @param heartbeat maximum allowed time between price updates */ error PriceRouter__StalePrice(address asset, uint256 timeSinceLastUpdate, uint256 heartbeat); // =========================================== CHAINLINK PRICING FUNCTIONS ===========================================\ /** * @notice Feed Registry contract used to get chainlink data feeds, use getFeed!! */ FeedRegistryInterface public constant feedRegistry = FeedRegistryInterface(0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf); /** * @notice Could not find an asset's price in USD or ETH. * @param asset address of the asset */ error PriceRouter__PriceNotAvailable(address asset); /** * @notice Interacts with Chainlink feed registry and first tries to get `asset` price in USD, * if that fails, then it tries to get `asset` price in ETH, and then converts the answer into USD. * @param asset the ERC20 token to get the price of. * @return price the price of `asset` in USD */ function getValueInUSD(ERC20 asset) public view returns (uint256 price) { AssetConfig memory config = getAssetConfig[asset]; // Make sure asset is supported. if (!config.isSupported) revert PriceRouter__UnsupportedAsset(address(asset)); // Remap asset if need be. asset = _remap(asset); if (!config.isPriceRangeInETH) { // Price feed is in USD. (, int256 _price, , uint256 _timestamp, ) = feedRegistry.latestRoundData(address(asset), Denominations.USD); price = _price.toUint256(); _checkPriceFeed(asset, price, _timestamp, config); } else { // Price feed is in ETH. (, int256 _price, , uint256 _timestamp, ) = feedRegistry.latestRoundData(address(asset), Denominations.ETH); price = _price.toUint256(); _checkPriceFeed(asset, price, _timestamp, config); // Convert price from ETH to USD. price = _price.toUint256().mulWadDown(_getExchangeRateFromETHToUSD()); } } /** * @notice Could not find an asset's price range in USD or ETH. * @param asset address of the asset */ error PriceRouter__PriceRangeNotAvailable(address asset); /** * @notice Interacts with Chainlink feed registry and first tries to get `asset` price range in USD, * if that fails, then it tries to get `asset` price range in ETH, and then converts the range into USD. * @param asset the ERC20 token to get the price range of. * @return min the minimum price where Chainlink nodes stop updating the oracle * @return max the maximum price where Chainlink nodes stop updating the oracle */ function _getPriceRange(ERC20 asset) internal view returns ( uint256 min, uint256 max, bool isETH ) { try feedRegistry.getFeed(address(asset), Denominations.USD) returns (AggregatorV2V3Interface aggregator) { IChainlinkAggregator chainlinkAggregator = IChainlinkAggregator(address(aggregator)); min = uint256(uint192(chainlinkAggregator.minAnswer())); max = uint256(uint192(chainlinkAggregator.maxAnswer())); isETH = false; } catch { // If we can't find the USD price, then try the ETH price. try feedRegistry.getFeed(address(asset), Denominations.ETH) returns (AggregatorV2V3Interface aggregator) { IChainlinkAggregator chainlinkAggregator = IChainlinkAggregator(address(aggregator)); min = uint256(uint192(chainlinkAggregator.minAnswer())); max = uint256(uint192(chainlinkAggregator.maxAnswer())); isETH = true; } catch { revert PriceRouter__PriceRangeNotAvailable(address(asset)); } } } /** * @notice helper function to grab pricing data for ETH in USD * @return exchangeRate the exchange rate for ETH in terms of USD * @dev It is inefficient to re-calculate _checkPriceFeed for ETH -> USD multiple times for a single TX, * but this is done in the explicit way because it is simpler and less prone to logic errors. */ function _getExchangeRateFromETHToUSD() internal view returns (uint256 exchangeRate) { (, int256 _price, , uint256 _timestamp, ) = feedRegistry.latestRoundData(Denominations.ETH, Denominations.USD); exchangeRate = _price.toUint256(); _checkPriceFeed(WETH, exchangeRate, _timestamp, getAssetConfig[WETH]); } /** * @notice helper function to validate a price feed is safe to use. * @param asset ERC20 asset price feed data is for. * @param value the price value the price feed gave. * @param timestamp the last timestamp the price feed was updated. * @param config the assets config storing min price, max price, and heartbeat requirements. */ function _checkPriceFeed( ERC20 asset, uint256 value, uint256 timestamp, AssetConfig memory config ) internal view { uint256 minPrice = config.minPrice; if (value < minPrice) revert PriceRouter__AssetBelowMinPrice(address(asset), value, minPrice); uint256 maxPrice = config.maxPrice; if (value > maxPrice) revert PriceRouter__AssetAboveMaxPrice(address(asset), value, maxPrice); uint256 heartbeat = config.heartbeat; uint256 timeSinceLastUpdate = block.timestamp - timestamp; if (timeSinceLastUpdate > heartbeat) revert PriceRouter__StalePrice(address(asset), timeSinceLastUpdate, heartbeat); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; interface IGravity { function sendToCosmos( address _tokenContract, bytes32 _destination, uint256 _amount ) external; }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; /** * @notice A library to extend the address array data type. */ library AddressArray { // =========================================== ADDRESS STORAGE =========================================== /** * @notice Add an address to the array at a given index. * @param array address array to add the address to * @param index index to add the address at * @param value address to add to the array */ function add( address[] storage array, uint256 index, address value ) internal { uint256 len = array.length; if (len > 0) { array.push(array[len - 1]); for (uint256 i = len - 1; i > index; i--) array[i] = array[i - 1]; array[index] = value; } else { array.push(value); } } /** * @notice Remove an address from the array at a given index. * @param array address array to remove the address from * @param index index to remove the address at */ function remove(address[] storage array, uint256 index) internal { uint256 len = array.length; require(index < len, "Index out of bounds"); for (uint256 i = index; i < len - 1; i++) array[i] = array[i + 1]; array.pop(); } /** * @notice Remove the first occurrence of a value in an array. * @param array address array to remove the address from * @param value address to remove from the array */ function remove(address[] storage array, address value) internal { uint256 len = array.length; for (uint256 i; i < len; i++) if (array[i] == value) { for (i; i < len - 1; i++) array[i] = array[i + 1]; array.pop(); return; } revert("Value not found"); } /** * @notice Check whether an array contains an address. * @param array address array to check * @param value address to check for */ function contains(address[] storage array, address value) internal view returns (bool) { for (uint256 i; i < array.length; i++) if (value == array[i]) return true; return false; } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; library Math { /** * @notice Substract with a floor of 0 for the result. */ function subMinZero(uint256 x, uint256 y) internal pure returns (uint256) { return x > y ? x - y : 0; } /** * @notice Used to change the decimals of precision used for an amount. */ function changeDecimals( uint256 amount, uint8 fromDecimals, uint8 toDecimals ) internal pure returns (uint256) { if (fromDecimals == toDecimals) { return amount; } else if (fromDecimals < toDecimals) { return amount * 10**(toDecimals - fromDecimals); } else { return amount / 10**(fromDecimals - toDecimals); } } // ===================================== OPENZEPPELIN'S MATH ===================================== function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } // ================================= SOLMATE's FIXEDPOINTMATHLIB ================================= uint256 public constant WAD = 1e18; // The scalar of ETH and most ERC20s. function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down. } function mulDivDown( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { assembly { // Store x * y in z for now. z := mul(x, y) // Equivalent to require(denominator != 0 && (x == 0 || (x * y) / x == y)) if iszero(and(iszero(iszero(denominator)), or(iszero(x), eq(div(z, x), y)))) { revert(0, 0) } // Divide z by the denominator. z := div(z, denominator) } } function mulDivUp( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { assembly { // Store x * y in z for now. z := mul(x, y) // Equivalent to require(denominator != 0 && (x == 0 || (x * y) / x == y)) if iszero(and(iszero(iszero(denominator)), or(iszero(x), eq(div(z, x), y)))) { revert(0, 0) } // First, divide z - 1 by the denominator and add 1. // We allow z - 1 to underflow if z is 0, because we multiply the // end result by 0 if z is zero, ensuring we return 0 if z is zero. z := mul(iszero(iszero(z)), add(div(sub(z, 1), denominator), 1)) } } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Simple single owner authorization mixin. /// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/auth/Owned.sol) abstract contract Owned { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event OwnerUpdated(address indexed user, address indexed newOwner); /*////////////////////////////////////////////////////////////// OWNERSHIP STORAGE //////////////////////////////////////////////////////////////*/ address public owner; modifier onlyOwner() virtual { require(msg.sender == owner, "UNAUTHORIZED"); _; } /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor(address _owner) { owner = _owner; emit OwnerUpdated(address(0), _owner); } /*////////////////////////////////////////////////////////////// OWNERSHIP LOGIC //////////////////////////////////////////////////////////////*/ function setOwner(address newOwner) public virtual onlyOwner { owner = newOwner; emit OwnerUpdated(msg.sender, newOwner); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Gas optimized reentrancy protection for smart contracts. /// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/ReentrancyGuard.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol) abstract contract ReentrancyGuard { uint256 private locked = 1; modifier nonReentrant() virtual { require(locked == 1, "REENTRANCY"); locked = 2; _; locked = 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/extensions/draft-ERC20Permit.sol) pragma solidity ^0.8.0; import "./draft-IERC20Permit.sol"; import "../ERC20.sol"; import "../../../utils/cryptography/draft-EIP712.sol"; import "../../../utils/cryptography/ECDSA.sol"; import "../../../utils/Counters.sol"; /** * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * _Available since v3.4._ */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping(address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private constant _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`. * However, to ensure consistency with the upgradeable transpiler, we will continue * to reserve a slot. * @custom:oz-renamed-from _PERMIT_TYPEHASH */ // solhint-disable-next-line var-name-mixedcase bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT; /** * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. */ constructor(string memory name) EIP712(name, "1") {} /** * @dev See {IERC20Permit-permit}. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual override { require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline)); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _approve(owner, spender, value); } /** * @dev See {IERC20Permit-nonces}. */ function nonces(address owner) public view virtual override returns (uint256) { return _nonces[owner].current(); } /** * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } /** * @dev "Consume a nonce": return the current value and increment. * * _Available since v4.1._ */ function _useNonce(address owner) internal virtual returns (uint256 current) { Counters.Counter storage nonce = _nonces[owner]; current = nonce.current(); nonce.increment(); } }
// 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 (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts 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: GPL-2.0-or-later pragma solidity >=0.8.0; import { IMulticall } from "src/interfaces/IMulticall.sol"; /** * @title Multicall * @notice Enables calling multiple methods in a single call to the contract * From: https://github.com/Uniswap/v3-periphery/contracts/base/Multicall.sol */ abstract contract Multicall is IMulticall { /// @inheritdoc IMulticall function multicall(bytes[] calldata data) public payable override returns (bytes[] memory results) { results = new bytes[](data.length); for (uint256 i = 0; i < data.length; i++) { (bool success, bytes memory result) = address(this).delegatecall(data[i]); if (!success) { // Next 5 lines from https://ethereum.stackexchange.com/a/83577 // solhint-disable-next-line reason-string if (result.length < 68) revert(); assembly { result := add(result, 0x04) } revert(abi.decode(result, (string))); } results[i] = result; } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity >=0.8.0; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETH( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountToken, uint256 amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETHWithPermit( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountToken, uint256 amountETH); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapTokensForExactETH( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) external pure returns (uint256 amountB); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountOut); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountIn); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.8.0; /// @title Callback for IUniswapV3PoolActions#swap /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface interface IUniswapV3SwapCallback { /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; } /// @title Router token swapping functionality /// @notice Functions for swapping tokens via Uniswap V3 interface IUniswapV3Router is IUniswapV3SwapCallback { struct ExactInputSingleParams { address tokenIn; address tokenOut; uint24 fee; address recipient; uint256 deadline; uint256 amountIn; uint256 amountOutMinimum; uint160 sqrtPriceLimitX96; } /// @notice Swaps `amountIn` of one token for as much as possible of another token /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata /// @return amountOut The amount of the received token function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut); struct ExactInputParams { bytes path; address recipient; uint256 deadline; uint256 amountIn; uint256 amountOutMinimum; } /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata /// @return amountOut The amount of the received token function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut); struct ExactOutputSingleParams { address tokenIn; address tokenOut; uint24 fee; address recipient; uint256 deadline; uint256 amountOut; uint256 amountInMaximum; uint160 sqrtPriceLimitX96; } /// @notice Swaps as little as possible of one token for `amountOut` of another token /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata /// @return amountIn The amount of the input token function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn); struct ExactOutputParams { bytes path; address recipient; uint256 deadline; uint256 amountOut; uint256 amountInMaximum; } /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed) /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata /// @return amountIn The amount of the input token function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v2; import "./AggregatorV2V3Interface.sol"; interface FeedRegistryInterface { struct Phase { uint16 phaseId; uint80 startingAggregatorRoundId; uint80 endingAggregatorRoundId; } event FeedProposed( address indexed asset, address indexed denomination, address indexed proposedAggregator, address currentAggregator, address sender ); event FeedConfirmed( address indexed asset, address indexed denomination, address indexed latestAggregator, address previousAggregator, uint16 nextPhaseId, address sender ); // V3 AggregatorV3Interface function decimals(address base, address quote) external view returns (uint8); function description(address base, address quote) external view returns (string memory); function version(address base, address quote) external view returns (uint256); function latestRoundData(address base, address quote) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function getRoundData( address base, address quote, uint80 _roundId ) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); // V2 AggregatorInterface function latestAnswer(address base, address quote) external view returns (int256 answer); function latestTimestamp(address base, address quote) external view returns (uint256 timestamp); function latestRound(address base, address quote) external view returns (uint256 roundId); function getAnswer( address base, address quote, uint256 roundId ) external view returns (int256 answer); function getTimestamp( address base, address quote, uint256 roundId ) external view returns (uint256 timestamp); // Registry getters function getFeed(address base, address quote) external view returns (AggregatorV2V3Interface aggregator); function getPhaseFeed( address base, address quote, uint16 phaseId ) external view returns (AggregatorV2V3Interface aggregator); function isFeedEnabled(address aggregator) external view returns (bool); function getPhase( address base, address quote, uint16 phaseId ) external view returns (Phase memory phase); // Round helpers function getRoundFeed( address base, address quote, uint80 roundId ) external view returns (AggregatorV2V3Interface aggregator); function getPhaseRange( address base, address quote, uint16 phaseId ) external view returns (uint80 startingRoundId, uint80 endingRoundId); function getPreviousRoundId( address base, address quote, uint80 roundId ) external view returns (uint80 previousRoundId); function getNextRoundId( address base, address quote, uint80 roundId ) external view returns (uint80 nextRoundId); // Feed management function proposeFeed( address base, address quote, address aggregator ) external; function confirmFeed( address base, address quote, address aggregator ) external; // Proposed aggregator function getProposedFeed(address base, address quote) external view returns (AggregatorV2V3Interface proposedAggregator); function proposedGetRoundData( address base, address quote, uint80 roundId ) external view returns ( uint80 id, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function proposedLatestRoundData(address base, address quote) external view returns ( uint80 id, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); // Phases function getCurrentPhaseId(address base, address quote) external view returns (uint16 currentPhaseId); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./AggregatorInterface.sol"; import "./AggregatorV3Interface.sol"; interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface {}
// SPDX-License-Identifier: Apache-2.0 pragma solidity 0.8.16; import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV2V3Interface.sol"; interface IChainlinkAggregator is AggregatorV2V3Interface { function maxAnswer() external view returns (int192); function minAnswer() external view returns (int192); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library Denominations { address public constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; address public constant BTC = 0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB; // Fiat currencies follow https://en.wikipedia.org/wiki/ISO_4217 address public constant USD = address(840); address public constant GBP = address(826); address public constant EUR = address(978); address public constant JPY = address(392); address public constant KRW = address(410); address public constant CNY = address(156); address public constant AUD = address(36); address public constant CAD = address(124); address public constant CHF = address(756); address public constant ARS = address(32); address public constant PHP = address(608); address public constant NZD = address(554); address public constant SGD = address(702); address public constant NGN = address(566); address public constant ZAR = address(710); address public constant RUB = address(643); address public constant INR = address(356); address public constant BRL = address(986); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.8.0; /// @title Multicall interface /// @notice Enables calling multiple methods in a single call to the contract // From: https://github.com/Uniswap/v3-periphery/contracts/interfaces/IMulticall.sol interface IMulticall { /// @notice Call multiple functions in the current contract and return the data from all of them if they all succeed /// @dev The `msg.value` should not be trusted for any method callable from multicall. /// @param data The encoded function data for each of the calls to make to this contract /// @return results The results from each of the calls passed in via data function multicall(bytes[] calldata data) external payable returns (bytes[] memory results); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface AggregatorInterface { function latestAnswer() external view returns (int256); function latestTimestamp() external view returns (uint256); function latestRound() external view returns (uint256); function getAnswer(uint256 roundId) external view returns (int256); function getTimestamp(uint256 roundId) external view returns (uint256); event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt); event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface AggregatorV3Interface { function decimals() external view returns (uint8); function description() external view returns (string memory); function version() external view returns (uint256); // getRoundData and latestRoundData should both raise "No data present" // if they do not have data to report, instead of returning unset values // which could be misinterpreted as actual reported values. function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); }
// 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"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @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); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
{ "remappings": [ "@chainlink/=lib/chainlink/", "@ds-test/=lib/forge-std/lib/ds-test/src/", "@forge-std/=lib/forge-std/src/", "@openzeppelin/=lib/openzeppelin-contracts/", "@solmate/=lib/solmate/src/", "@uniswap/v3-core/=lib/v3-core/", "@uniswap/v3-periphery/=lib/v3-periphery/", "chainlink/=lib/chainlink/", "ds-test/=lib/forge-std/lib/ds-test/src/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/", "solmate/=lib/solmate/src/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "bytecodeHash": "ipfs" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
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- No Contract Security Audit Submitted- Submit Audit Here
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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)
000000000000000000000000dffa1443a72fd3f4e935b93d0c3bff8fe80ce083000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000000180000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000001e00000000000000000000000000000000000000000000000000000000000000220000000000000000000000000a9962a5bfbea6918e958dee0647e99fd7863b95a0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb480000000000000000000000002260fac5e5542a773aa44fbcfedf7c193bc2c599000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a537465616479204254430000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000095374656164794254430000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _registry (address): 0xDffa1443a72Fd3f4e935b93d0C3BFf8FE80cE083
Arg [1] : _asset (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [2] : _positions (address[]): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48,0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599
Arg [3] : _positionTypes (uint8[]): 0,0
Arg [4] : _holdingPosition (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [5] : _withdrawType (uint8): 1
Arg [6] : _name (string): Steady BTC
Arg [7] : _symbol (string): SteadyBTC
Arg [8] : _strategistPayout (address): 0xA9962a5BfBea6918E958DeE0647E99fD7863b95A
-----Encoded View---------------
19 Constructor Arguments found :
Arg [0] : 000000000000000000000000dffa1443a72fd3f4e935b93d0c3bff8fe80ce083
Arg [1] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000180
Arg [4] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [6] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000220
Arg [8] : 000000000000000000000000a9962a5bfbea6918e958dee0647e99fd7863b95a
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [10] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [11] : 0000000000000000000000002260fac5e5542a773aa44fbcfedf7c193bc2c599
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [15] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [16] : 5374656164792042544300000000000000000000000000000000000000000000
Arg [17] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [18] : 5374656164794254430000000000000000000000000000000000000000000000
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.99975 | 582.1088 | $581.96 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.